657 results on '"Yu-Ju Chen"'
Search Results
102. Using the saliency-based model to design a digital archaeological game to motivate players' intention to visit the digital archives of Taiwan's natural science museum.
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Jon-Chao Hong, Ming-Yueh Hwang, Yu-Ju Chen, Pei-Hsin Lin, Yao-Tien Huang, Hao-Yueh Cheng, and Chih-Chin Lee
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- 2013
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103. The relation between students' anxiety and interest in playing an online game.
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Ming-Yueh Hwang, Jon-Chao Hong, Tsui-Fang Hsu, and Yu-Ju Chen
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- 2011
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104. MITF functions as a tumor suppressor in non-small cell lung cancer beyond the canonically oncogenic role
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Chia Yu Wang, Hsuan-Yu Chen, Yan-Ming Chen, Yin-Chen Hsu, Su-Chin Chiu, Ching-Cheng Chiang, Sung-Liang Yu, Chien-Yu Lin, Gee-Chen Chang, Pan-Chyr Yang, Yu-Ju Chen, Yi-Ju Chen, Yi-Jing Hsiao, Wen-Hsin Chang, and Jeremy J.W. Chen
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Male ,Aging ,Lung Neoplasms ,WNT pathway ,Carcinogenesis ,Adenocarcinoma of Lung ,Biology ,medicine.disease_cause ,Mice ,Melanocyte differentiation ,Cell Movement ,Carcinoma, Non-Small-Cell Lung ,Cell Line, Tumor ,Exome Sequencing ,medicine ,metastasis ,Animals ,Humans ,Gene silencing ,Genes, Tumor Suppressor ,Neoplasm Metastasis ,Wnt Signaling Pathway ,Tumor Stem Cell Assay ,Aged ,Annexin A1 ,Microphthalmia-Associated Transcription Factor ,FZD7 ,Neovascularization, Pathologic ,integumentary system ,Melanoma ,Wnt signaling pathway ,transcriptome profiling ,Cell Biology ,Middle Aged ,Cell cycle ,medicine.disease ,Microphthalmia-associated transcription factor ,Frizzled Receptors ,body regions ,Alcohol Oxidoreductases ,Gene Knockdown Techniques ,Cancer research ,Adenocarcinoma ,Female ,Neoplasm Transplantation ,Research Paper - Abstract
Microphthalamia-associated transcription factor (MITF) is a critical mediator in melanocyte differentiation and exerts oncogenic functions in melanoma progression. However, the role of MITF in non-small cell lung cancer (NSCLC) is still unknown. We found that MITF is dominantly expressed in the low-invasive CL1-0 lung adenocarcinoma cells and paired adjacent normal lung tissues. MITF expression is significantly associated with better overall survival and disease-free survival in NSCLC and serves as an independent prognostic marker. Silencing MITF promotes tumor cell migration, invasion and colony formation in lung adenocarcinoma cells. In xenograft mouse model, MITF knockdown enhances metastasis and tumorigenesis, but decreases angiogenesis in the Matrigel plug assay. Whole transcriptome profiling of the landscape of MITF regulation in lung adenocarcinoma indicates that MITF is involved in cell development, cell cycle, inflammation and WNT signaling pathways. Chromatin immunoprecipitation assays revealed that MITF targets the promoters of FZD7, PTGR1 and ANXA1. Moreover, silencing FZD7 reduces the invasiveness that is promoted by silencing MITF. Strikingly, MITF has significantly inverse correlations with the expression of its downstream genes in lung adenocarcinoma. In summary, we demonstrate the suppressive role of MITF in lung cancer progression, which is opposite to the canonical oncogenic function of MITF in melanoma.
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- 2020
105. Simulation of the Influence of Parameters on Simulated Moving Bed
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Chao-Fan Xie, Yu-Ju Chen, Huang-Chu Huang, and Rey-Chue Hwang
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chemistry.chemical_compound ,chemistry ,Environmental science ,Mechanics ,Simulated moving bed - Published
- 2020
106. Responsiveness to contest experiences is associated with competitive ability but not aggressiveness or boldness
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Yu-Ju Chen, Yu-Ting Chang, Yung-Che Tseng, and Yuying Hsu
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Animal Science and Zoology ,Ecology, Evolution, Behavior and Systematics - Published
- 2022
107. Front Cover: Kinase Sensing Based on Protein Interactions at the Catalytic Site (Chem. Eur. J. 17/2022)
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Ohad Solomon, Hannah Sapir, Evgeniy Mervinetsky, Yu‐Ju Chen, Assaf Friedler, and Shlomo Yitzchaik
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Organic Chemistry ,General Chemistry ,Catalysis - Published
- 2022
108. Kinase Sensing Based on Protein Interactions at the Catalytic Site
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Ohad Solomon, Hannah Sapir, Evgeniy Mervinetsky, Yu‐Ju Chen, Assaf Friedler, and Shlomo Yitzchaik
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Catalytic Domain ,Organic Chemistry ,Humans ,Biosensing Techniques ,Gold ,General Chemistry ,Phosphorylation ,Peptides ,Catalysis - Abstract
The role kinases play in regulating cellular processes makes them potential biomarkers for detecting the onset and prognosis of various diseases, including many types of cancer. Current kinase biosensors, including electrochemical and radiometric methods, rely on sensing the ATP-dependant enzymatic phosphorylation reaction. Here we introduce a new type of interaction-based electrochemical kinase biosensor that does not require any chemical labelling or modification. The basis for sensing is the interactions between the catalytic site of the kinase and the phosphorylation site of its substrate rather than the phosphorylation reaction. We demonstrated this concept with the ERK2 kinase and its substrate protein HDGF, which is involved in lung cancer. A peptide monolayer derived from the HDGF phosphorylation site was adsorbed onto a gold electrode and was used to sense ERK2 without ATP. The sensitivity of the assay was down to 10 nM of ERK2, corresponding with the range of its cellular concentrations. Surface chemistry analysis confirmed that ERK2 was bound to the HDGF peptide monolayer. This increased the permeability of redox-active species through the monolayer and resulted in ERK2 electrochemical sensing. Since our detection approach is based on protein-protein interactions and not on the enzymatic reaction, it can be further utilized for more selective detection of different types of enzymes.
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- 2022
109. Cover Feature: Investigating a Boronate‐Affinity‐Guided Acylation Reaction for Labelling Native Antibodies (Chem. Eur. J. 17/2022)
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Avijit K. Adak, Kuan‐Ting Huang, Chien‐Yu Liao, Yuan‐Jung Lee, Wen‐Hua Kuo, Yi‐Ren Huo, Pei‐Jhen Li, Yi‐Ju Chen, Bo‐Shiun Chen, Yu‐Ju Chen, Kuo Chu Hwang, Wun‐Shang Wayne Chang, and Chun‐Cheng Lin
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Organic Chemistry ,General Chemistry ,Catalysis - Published
- 2022
110. Investigating a Boronate‐Affinity‐Guided Acylation Reaction for Labelling Native Antibodies
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Avijit K. Adak, Kuan‐Ting Huang, Chien‐Yu Liao, Yuan‐Jung Lee, Wen‐Hua Kuo, Yi‐Ren Huo, Pei‐Jhen Li, Yi‐Ju Chen, Bo‐Shiun Chen, Yu‐Ju Chen, Kuo Chu Hwang, Wun‐Shang Wayne Chang, and Chun‐Cheng Lin
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Azides ,Immunoconjugates ,Acylation ,Organic Chemistry ,Antibodies, Monoclonal ,General Chemistry ,Catalysis ,Fluorescent Dyes - Abstract
The excellent molecular recognition capabilities of monoclonal antibodies (mAbs) have opened up exciting opportunities for biotherapeutic discovery. Taking advantage of the full potential of this tool necessitates affinity ligands capable of conjugating directly with small molecules to a defined degree of biorthogonality, especially when modifying natural Abs. Herein, a bioorthogonal boronate-affinity-based Ab ligand featuring a 4-(dimethylamino)pyridine and an S-aryl thioester to label full-length Abs is reported. The photoactivatable linker in the acyl donor facilitated purification of azide-labelled Ab (N
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- 2022
111. Electrochemical biosensors based on peptide-kinase interactions at the kinase docking site
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Evgeniy Mervinetsky, Assaf Friedler, Yu-Ju Chen, Shlomo Yitzchaik, Ohad Solomon, and Pralhad Namdev Joshi
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chemistry.chemical_classification ,Chemistry ,Kinase ,Stereochemistry ,p38 mitogen-activated protein kinases ,Allosteric regulation ,Biomedical Engineering ,Biophysics ,Peptide ,General Medicine ,Biosensing Techniques ,Docking (molecular) ,Electrochemistry ,Phosphorylation ,Amino Acid Sequence ,Gold ,Peptides ,Biosensor ,Proto-oncogene tyrosine-protein kinase Src ,Biotechnology - Abstract
Kinases are important cancer biomarkers and are conventionally detected based on their catalytic activity. Kinases regulate cellular activities by phosphorylation of motif-specific multiple substrate proteins, resulting in a lack of selectivity of activity-based kinase biosensors. We present an alternative approach of sensing kinases based on the interactions of their allosteric docking sites with a specific partner protein. The new approach was demonstrated for the ERK2 kinase and its substrate ELK-1. A peptide derived from ELK-1 was bound to a gold electrode and ERK2 sensing was performed by electrochemical impedance spectroscopy. We performed a detailed analysis of the interaction between the ELK-1 peptide and the kinase on gold surfaces. Atomic force microscopy, variable angle spectroscopic ellipsometry, X-ray Photoelectron Spectroscopy, and polarization modulation IR reflection-absorption spectroscopy analysis of the gold surface revealed the adsorbed layer of the ERK2 on the peptide monolayer. The sensors showed a high level of target selectivity for ERK2 compared to the p38γ kinase and BSA. ERK2 was detected in its cellular concentration range, 0.5-2.0 μM, and the limit of detection was calculated to be 0.35 μM. Using the flexibility of peptide design, our method is generic for developing sensitive and substrate-specific biosensors and other disease-related enzymes based on their interactions.
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- 2022
112. The estimations of ammonia concentration by using neural network SH-SAW sensors.
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Jen-Pin Yang, Chi-Yen Shen, Yu-Ju Chen, Huang-Chu Huang, and Rey-Chue Hwang
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- 2011
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113. dbGSH: a database of S-glutathionylation.
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Yi-Ju Chen, Cheng-Tsung Lu, Tzong-Yi Lee, and Yu-Ju Chen
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- 2014
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114. Artificial intelligent analyzer for mechanical properties of rolled steel bar by using neural networks.
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Rey-Chue Hwang, Yu-Ju Chen, and Huang-Chu Huang
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- 2010
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115. The predictions of optoelectronic attributes of LED by neural network.
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Pin-Hsuan Weng, Yu-Ju Chen, Shuming T. Wang, and Rey-Chue Hwang
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- 2010
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116. A passive auto-focus camera control system.
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Chih-Yung Chen, Rey-Chue Hwang, and Yu-Ju Chen
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- 2010
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117. An AI system for the decision to control parameters of TP film printing.
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Chih-Chien Huang, Huang-Chu Huang, Yu-Ju Chen, and Rey-Chue Hwang
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- 2009
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118. Comparative analysis of availability between three systems with general repair times, reboot delay and switching failures.
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Kuo-Hsiung Wang and Yu-Ju Chen
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- 2009
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119. MaXIC-Q Web: a fully automated web service using statistical and computational methods for protein quantitation based on stable isotope labeling and LC-MS.
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Chih-Chiang Tsou, Yin-Hao Tsui, Yi-Hwa Yian, Yi-Ju Chen, Han-Yin Yang, Chuan-Yih Yu, Ke-Shiuan Lynn, Yu-Ju Chen, Ting-Yi Sung, and Wen-Lian Hsu
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- 2009
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120. Leptin protects brain from ischemia/reperfusion‐induced infarction by stabilizing the blood–brain barrier to block brain infiltration by the blood‐borne neutrophils
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Yu-Zhen Huang, Yu-Ju Chen, Wan-Ting Hung, Chi-Hsin Lin, Li-Ya Liao, Chen-Hsuan Wang, Shu-Yun Cheng, Li-Yu Lu, Shih-Yi Lin, and Chi-Mei Hsueh
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Leptin ,Neutrophils ,Ischemia ,Motility ,Infarction ,Pharmacology ,Blood–brain barrier ,Brain Ischemia ,Rats, Sprague-Dawley ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Animals ,030304 developmental biology ,0303 health sciences ,Tight junction ,business.industry ,General Neuroscience ,medicine.disease ,In vitro ,Rats ,medicine.anatomical_structure ,Blood-Brain Barrier ,Reperfusion Injury ,Reperfusion ,business ,Infiltration (medical) ,030217 neurology & neurosurgery - Abstract
The cellular and molecular mechanisms underlying leptin-mediated brain protection against cerebral ischemia were investigated at the blood-brain barrier (BBB) and neutrophil level. Through the ischemia/reperfusion (I/R) animal model, we found that leptin expression level was significantly decreased in ischemic hemisphere. Brain injection with leptin (15 μg/kg, intracisternally) could block the I/R-increased BBB permeability, activation of matrix metallopeptidase 9 (MMP-9) and brain infiltration of blood-borne neutrophils to reduce the infarct volume of ischemic brain. The brain expression level of tight junction protein ZO-1 as well as number and motility of neutrophils in blood was all increased by the same injection, indicating BBB stability (rather than reduction in neutrophils) played a major role in the leptin-inhibited brain infiltration of neutrophils. Leptin-mediated protection of BBB was further confirmed in vitro, through a BBB cellular model under the in vitro ischemic condition (G/R: glucose-oxygen-serum deprivation followed by GOS restoration). The results showed that leptin again could block the G/R-increased neutrophil adherence to EC layer as well as BBB permeability, likely by stimulating the endothelial expression of ZO-1 and VE-Cadherin. The study has demonstrated that leptin could protect ischemic brain via multiple ways (other than neuronal protection), by inhibiting the BBB permeability, brain infiltration of the blood-borne neutrophils and neutrophil adherence to vascular ECs. The role of leptin in vascular biology of stroke could further support its therapeutic potential in other neurodegenerative diseases, associated with BBB disorder.
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- 2020
121. Low dose of propranolol treatment is associated with better survival in cirrhotic patients with hepatic encephalopathy
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Pei Chang Lee, Teh Ia Huo, Fa-Yauh Lee, Wei-Yu Kao, Ping Hsien Chen, Yi Hsiang Huang, Han-Chieh Lin, Yu Ju Chen, Jaw Ching Wu, Ming Chih Hou, Kuei Chuan Lee, Yueh Ching Chou, and Chien Wei Su
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Liver Cirrhosis ,medicine.medical_specialty ,Cirrhosis ,Adrenergic beta-Antagonists ,Taiwan ,Propranolol ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,Risk of mortality ,Humans ,Hepatic encephalopathy ,Proportional Hazards Models ,Hepatology ,Proportional hazards model ,business.industry ,Hazard ratio ,medicine.disease ,Hepatic Encephalopathy ,030220 oncology & carcinogenesis ,Cohort ,Propensity score matching ,030211 gastroenterology & hepatology ,business ,medicine.drug - Abstract
OBJECTIVE The use of nonselective beta blockers in cirrhotic patients experiencing complications is controversial. We aimed to investigate the association between propranolol treatment and outcomes for cirrhotic patients with hepatic encephalopathy. METHODS Using data from the Taiwan National Health Insurance Research Database, we identified 4754 cirrhotic patients newly diagnosed with hepatic encephalopathy between 2001 and 2010. Among them, 519 patients received propranolol treatment and the other 519 patients without exposure to propranolol were enrolled into our study, both of which were matched by sex, age, and propensity score. The Kaplan-Meier method and time-dependent-modified Cox proportional hazards models were employed for survival and multivariate-stratified analyses. RESULTS The median overall survival (OS) was significantly longer in the propranolol-treated cohort than in the untreated cohort (3.46 versus 1.88 years, P
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- 2020
122. Sample Size-Comparable Spectral Library Enhances Data-Independent Acquisition-Based Proteome Coverage of Low-Input Cells
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Asad Ali Siyal, Eric Sheng-Wen Chen, Hsin-Ju Chan, Reta Birhanu Kitata, Jhih-Ci Yang, Hsiung-Lin Tu, and Yu-Ju Chen
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Proteome ,Peptide Library ,Tandem Mass Spectrometry ,Sample Size ,Reproducibility of Results ,Analytical Chemistry ,Chromatography, Liquid - Abstract
Despite advancements of data-independent acquisition mass spectrometry (DIA-MS) to provide comprehensive and reproducible proteome profiling, its utility in very low-input samples is limited. Due to different proteome complexities and corresponding peptide ion abundances, the conventional LC-MS/MS acquisition and widely used large-scale DIA libraries may not be suitable for the micro-nanogram samples. In this study, we report a sample size-comparable library-based DIA approach to enhance the proteome coverage of low-input nanoscale samples (i.e., nanogram cells, ∼5-50 cells). By constructing sample size-comparable libraries, 2380 and 3586 protein groups were identified from as low as 0.75 (∼5 cells) and 1.5 ng (∼10 cells), respectively, highlighting one of the highest proteome coverage with good reproducibility (86%-99% in triplicate results). For the 0.75 ng sample (∼5 cells), significantly superior identification (2380 proteins) was achieved by small-size library-based DIA, compared to 1908, 1749, and 107 proteins identified from medium-size and large-size libraries and a lung cancer resource spectral library, respectively. A similar trend was observed using a different instrument and data analysis pipeline, indicating the generalized conclusion of the approach. Furthermore, the small-size library uniquely identified 518 (22%) proteins in the low-abundant region and spans over a 5-order dynamic range. Spectral similarity analysis revealed that the fragmentation ion pattern in the DIA-MS/MS spectra of the dataset and spectral library play crucial roles for mapping low abundant proteins. With these spectral libraries made freely available, the optimized library-based DIA strategy and DIA digital map will advance quantitative proteomics applications for mass-limited samples.
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- 2021
123. Endothelial Yin Yang 1 Phosphorylation at S118 Induces Atherosclerosis Under Flow
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Chih-I Lee, Shu Yi Wei, Hsin-Yi Wu, Pei Ling Lee, Shu Chien, Wei-Li Wang, Chia-Yu Lin, Jeng-Jiann Chiu, Yu-Ju Chen, and Yu-Tsung Shih
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Male ,Physiology ,Cell Line ,Rats, Sprague-Dawley ,Mice ,Animals ,Humans ,Phosphorylation ,Casein Kinase II ,YY1 Transcription Factor ,Binding Sites ,Chemistry ,Endothelial Cells ,Proto-Oncogene Proteins c-mdm2 ,Zinc Fingers ,Atherosclerosis ,YIN-YANG-1 ,Cell biology ,Rats ,Endothelial stem cell ,Mice, Inbred C57BL ,Flow (mathematics) ,Blood Circulation ,Disturbed flow ,Casein kinase 1 ,Endothelium, Vascular ,Tetrabromocinnamic acid ,Cardiology and Cardiovascular Medicine ,Protein Binding - Abstract
Rationale: Disturbed flow occurring in arterial branches and curvatures induces vascular endothelial cell (EC) dysfunction and atherosclerosis. We postulated that disturbed flow plays important role in modulating phosphoprotein expression profiles to regulate endothelial functions and atherogenesis. Objective: The goal of this study is to discover novel site-specific phosphorylation alterations induced by disturbed flow in ECs to contribute to atherosclerosis. Methods and Results: Quantitative phosphoproteomics analysis of ECs exposed to disturbed flow with low and oscillatory shear stress (0.5±4 dynes/cm 2 ) versus pulsatile shear stress (12±4 dynes/cm 2 ) revealed that oscillatory shear stress induces phospho-YY1 S118 (serine [S]118 phosphorylation of Yin Yang 1) in ECs. Elevated phospho-YY1 S118 level in ECs was further confirmed to be present in the disturbed flow regions in experimental animals and human atherosclerotic arteries. This disturbed flow-induced EC phospho-YY1 S118 is mediated by CK2α (casein kinase 2α) through its direct interaction with YY1. Yeast 2-hybrid library screening and in situ proximity ligation assays demonstrate that phospho-YY1 S118 directly binds ZKSCAN4 (zinc finger with KRAB [krüppel-associated box] and SCAN [SRE-ZBP, CTfin51, AW-1 and Number 18 cDNA] domains 4) to induce promoter activity and gene expression of HDM2 (human double minute 2), which consequently induces EC proliferation through downregulation of p53 and p21 CIP1 . Administration of apoE-deficient ( ApoE −/− ) mice with CK2-specific inhibitor tetrabromocinnamic acid or atorvastatin inhibits atherosclerosis formation through downregulations of EC phospho-YY1 S118 and HDM2. Generation of novel transgenic mice bearing EC-specific overexpression of S118-nonphosphorylatable mutant of YY1 in ApoE −/− mice confirms the critical role of phospho-YY1 S118 in promoting atherosclerosis through EC HDM2. Conclusions: Our findings provide new insights into the mechanisms by which disturbed flow induces endothelial phospho-YY1 S118 to promote atherosclerosis, thus indicating phospho-YY1 S118 as a potential molecular target for atherosclerosis treatment.
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- 2021
124. Vinculin phosphorylation impairs vascular endothelial junctions promoting atherosclerosis
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Yu-Tsung Shih, Shu-Yi Wei, Jin-Hua Chen, Wei-Li Wang, Hsin-Yi Wu, Mei-Cun Wang, Chia-Yu Lin, Pei-Lin Lee, Chih-Yuan Lin, Hung-Che Chiang, Yu-Ju Chen, Shu Chien, and Jeng-Jiann Chiu
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Cardiology and Cardiovascular Medicine - Abstract
Background and aims Atherosclerosis preferentially develops in arterial branches and curvatures where vascular endothelium is exposed to disturbed flow. In this study, the effects of disturbed flow on the regulation of vascular endothelial phosphoproteins and their contribution to therapeutic application in atherogenesis were elucidated. Methods Porcine models, large-scale phosphoproteomics, transgenic mice, and clinical specimens were used to discover novel site-specific phosphorylation alterations induced by disturbed flow in endothelial cells (ECs). Results A large-scale phosphoproteomics analysis of native endothelium from disturbed (athero-susceptible) vs. pulsatile flow (athero-resistant) regions of porcine aortas led to the identification of a novel atherosclerosis-related phosphoprotein vinculin (VCL) with disturbed flow-induced phosphorylation at serine 721 (VCLS721p). The induction of VCLS721p was mediated by G-protein-coupled receptor kinase 2 (GRK2)S29p and resulted in an inactive form of VCL with a closed conformation, leading to the VE-cadherin/catenin complex disruption to enhance endothelial permeability and atherogenesis. The generation of novel apolipoprotein E-deficient (ApoE−/−) mice overexpressing S721-non-phosphorylatable VCL mutant in ECs confirmed the critical role of VCLS721p in promoting atherosclerosis. The administration of a GRK2 inhibitor to ApoE−/− mice suppressed plaque formation by inhibiting endothelial VCLS721p. Studies on clinical specimens from patients with coronary artery disease (CAD) revealed that endothelial VCLS721p is a critical clinicopathological biomarker for atherosclerosis progression and that serum VCLS721p level is a promising biomarker for CAD diagnosis. Conclusions The findings of this study indicate that endothelial VCLS721p is a valuable hemodynamic-based target for clinical assessment and treatment of vascular disorders resulting from atherosclerosis.
- Published
- 2021
125. Progress Identifying and Analyzing the Human Proteome: 2021 Metrics from the HUPO Human Proteome Project
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Fernando J. Corrales, Lydie Lane, Eric W. Deutsch, Sudhir Srivastava, Yu-Ju Chen, Ruedi Aebersold, Nuno Bandeira, Young Ki Paik, Susan T. Weintraub, Siqi Liu, Ileana M. Cristea, Cecilia Lindskog, Michael H.A. Roehrl, Robert L. Moritz, Gilbert S. Omenn, and Christopher M. Overall
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Proteomics ,0303 health sciences ,NeXtProt ,Proteome ,030302 biochemistry & molecular biology ,Human Protein Atlas ,Genomics ,General Chemistry ,Computational biology ,Biology ,Biochemistry ,Mass Spectrometry ,Article ,3. Good health ,Glycoproteomics ,03 medical and health sciences ,Benchmarking ,Human proteome project ,Humans ,PeptideAtlas ,Databases, Protein ,030304 developmental biology - Abstract
The 2021 Metrics of the HUPO Human Proteome Project (HPP) show that protein expression has now been credibly detected (neXtProt PE1 level) for 18 357 (92.8%) of the 19 778 predicted proteins coded in the human genome, a gain of 483 since 2020 from reports throughout the world reanalyzed by the HPP. Conversely, the number of neXtProt PE2, PE3, and PE4 missing proteins has been reduced by 478 to 1421. This represents remarkable progress on the proteome parts list. The utilization of proteomics in a broad array of biological and clinical studies likewise continues to expand with many important findings and effective integration with other omics platforms. We present highlights from the Immunopeptidomics, Glycoproteomics, Infectious Disease, Cardiovascular, Musculo-Skeletal, Liver, and Cancers B/D-HPP teams and from the Knowledgebase, Mass Spectrometry, Antibody Profiling, and Pathology resource pillars, as well as ethical considerations important to the clinical utilization of proteomics and protein biomarkers.
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- 2021
126. Follistatin mediates learning and synaptic plasticity via regulation of Asic4 expression in the hippocampus
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Shin-Meng Deng, Hui-Wen Chen, Hsien-Sung Huang, Yu-Ju Chen, Martin M. Matzuk, Jonathan Flint, Chi-Hui Tsao, Bertrand Chin-Ming Tan, Sin-Jhong Cheng, Guo-Jen Huang, and Wei-Ting Chen
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Male ,Follistatin ,hippocampus ,Neurogenesis ,Long-Term Potentiation ,Spatial Learning ,Hippocampus ,Hippocampal formation ,Mice ,Cognition ,Memory ,Animals ,Mice, Knockout ,Neuronal Plasticity ,learning ,Multidisciplinary ,biology ,Working memory ,Asic4 ,Long-term potentiation ,Biological Sciences ,Acid Sensing Ion Channels ,Mice, Inbred C57BL ,adult neurogenesis ,Synapses ,Synaptic plasticity ,biology.protein ,Female ,human activities ,Neuroscience ,Chromatin immunoprecipitation - Abstract
Significance Adult neurogenesis, which is known to be a heritable trait, is thought to be involved in learning, stress-related anxiety, and antidepressant action. In this study, we map genes influencing adult neurogenesis and identify a candidate gene, follistatin (Fst) for further study. By utilizing a brain-specific knockout and viral vector-mediated gene transfer, we reveal the importance of hippocampal FST in neurogenesis, learning, and synaptic plasticity. From RNA sequencing and chromatin immunoprecipitation experiments, we identify Asic4 as a critical downstream target gene regulated by FST. Our work demonstrates that FST functions in the hippocampus at least in part through regulating Asic4 expression. Overall, we illustrate the role of hippocampal Fst in learning and synaptic plasticity., The biological mechanisms underpinning learning are unclear. Mounting evidence has suggested that adult hippocampal neurogenesis is involved although a causal relationship has not been well defined. Here, using high-resolution genetic mapping of adult neurogenesis, combined with sequencing information, we identify follistatin (Fst) and demonstrate its involvement in learning and adult neurogenesis. We confirmed that brain-specific Fst knockout (KO) mice exhibited decreased hippocampal neurogenesis and demonstrated that FST is critical for learning. Fst KO mice exhibit deficits in spatial learning, working memory, and long-term potentiation (LTP). In contrast, hippocampal overexpression of Fst in KO mice reversed these impairments. By utilizing RNA sequencing and chromatin immunoprecipitation, we identified Asic4 as a target gene regulated by FST and show that Asic4 plays a critical role in learning deficits caused by Fst deletion. Long-term overexpression of hippocampal Fst in C57BL/6 wild-type mice alleviates age-related decline in cognition, neurogenesis, and LTP. Collectively, our study reveals the functions for FST in adult neurogenesis and learning behaviors.
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- 2021
127. An effective learning of neural network by using RFBP learning algorithm.
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Yu-Ju Chen, Tsung-Chuan Huang, and Rey-Chue Hwang
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- 2004
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128. A pilot study of biliary atresia newborn screening using dried blood spot matrix metalloproteinase-7
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Chee Seng Lee, Yen-Hsuan Ni, Huey-Ling Chen, Jia-Feng Wu, Hong-Yuan Hsu, Yin-Hsiu Chien, Ni-Chung Lee, Paul Wuh-Liang Hwu, Yu-Ju Chen, Yu-Lin Wang, and Mei-Hwei Chang
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Hepatology - Published
- 2022
129. dbSNO: a database of cysteine S-nitrosylation.
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Tzong-Yi Lee, Yi-Ju Chen, Cheng-Tsung Lu, Wei-Chieh Ching, Yu-Chuan Teng, Hsien-Da Huang, and Yu-Ju Chen
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- 2012
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130. Biomarker identification of hepatocellular carcinoma using a methodical literature mining strategy.
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Nai-Wen Chang 0001, Hong-Jie Dai, Yung-Yu Shih, Chi-Yang Wu, Mira Anne C. dela Rosa, Rofeamor P. Obena, Yu-Ju Chen, Wen-Lian Hsu, and Yen-Jen Oyang
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- 2017
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131. RegPhos 2.0: an updated resource to explore protein kinase-substrate phosphorylation networks in mammals.
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Kai-Yao Huang, Hsin-Yi Wu, Yi-Ju Chen, Cheng-Tsung Lu, Min-Gang Su, Yun-Chung Hsieh, Chih-Ming Tsai, Kuo-I Lin, Hsien-Da Huang, Tzong-Yi Lee, and Yu-Ju Chen
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- 2014
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132. Male Infertility Increases the Risk of Cardiovascular Diseases: A Nationwide Population-Based Cohort Study in Taiwan
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Peng-Ciao Chen, Yu-Ju Chen, Chia-Chen Yang, Ting-Ti Lin, Chien-Chu Huang, Chi-Hsiang Chung, Chien-An Sun, and Wu-Chien Chien
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Psychiatry and Mental health ,Aging ,Reproductive Medicine ,Urology ,Health Policy ,Public Health, Environmental and Occupational Health ,Pharmacology (medical) - Abstract
Some evidence suggests that male infertility increases the risk of cardiovascular diseases (CVDs). However, the evidence in Asian populations is relatively scarce. The aim of this study is to determine whether male infertility increases the risk of CVDs.We used inpatient and outpatient data for the years 2000 to 2015 from the Taiwanese Longitudinal Health Insurance Database. We enrolled 7,016 males over 18 years old and diagnosed with male infertility. Of these, 2,326 matched our inclusion criteria and were assigned to the study group. For each infertility patient, four comparison patients were frequency-matched by age and index date to form a control cohort comprising 9,304 patients. Cox proportional hazards analysis was used to estimate the association between male infertility and CVDs.After a 15-year follow-up, the incidence rate of CVDs was higher in the infertility group than the control group (1,460.23 and 1,073.70 per 100,000 person-years, respectively). The Cox proportional hazards regression analysis revealed that the adjusted HR for CVDs was 1.472 for the infertility group (95% CI, 1.288-1.683; p0.001) relative to the control group. The Kaplan-Meier analysis of the cumulative incidence of CVDs in the two groups showed that the cumulative risk curve for CVDs was significantly higher for the infertility group than the control group.This study shows that men with infertility have a higher risk of developing incident CVDs. In the future, healthcare providers should pay attention to these patients because of their higher health risks.
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- 2021
133. Power Signal Predictions by Several Neural Models.
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Rey-Chue Hwang, Yu-Ju Chen, Shang-Jen Chuang, Huang-Chu Huang, and Chuo-Yean Chang
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- 2006
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134. Direct Oligosaccharide Profiling Using Thin-Layer Chromatography Coupled with Ionic Liquid-Stabilized Nanomatrix-Assisted Laser Desorption-Ionization Mass Spectrometry
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Mei-Chun Tseng, Leta Deressa Tolesa, Yu-Ju Chen, Elias Gizaw Mernie, and Ming-Jer Lee
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Glycan ,Ionic Liquids ,Oligosaccharides ,010402 general chemistry ,Mass spectrometry ,01 natural sciences ,Analytical Chemistry ,chemistry.chemical_compound ,Desorption ,Ethylamines ,Humans ,Sample preparation ,Magnetite Nanoparticles ,Derivatization ,chemistry.chemical_classification ,Chromatography ,Milk, Human ,biology ,Chemistry ,010401 analytical chemistry ,Reproducibility of Results ,Oligosaccharide ,Thin-layer chromatography ,0104 chemical sciences ,Matrix-assisted laser desorption/ionization ,Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ,biology.protein ,Female ,Chromatography, Thin Layer - Abstract
The in-depth characterization of glycan structures is crucial to understanding their structure-function relationships and their effects on health and various diseases. Despite advances in rapid analysis, the utility of matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) is limited for complex mixtures of carbohydrates due to their low ionization efficiency and the difficulty in separating oligosaccharides because of their high structural similarity. In this study, we developed an ionic liquid (IL)-stabilized, nanomatrix-decorated, thin-layer chromatography (TLC)-MALDI MS method for simultaneous and rapid separation, detection, and identification of oligosaccharides to achieve efficient profiling. The IL demonstrated good dispersion and stabilization for the spin coating of dihydroxybenzoic acid-functionalized magnetic nanoparticles (DHB@MNPs) on the TLC plate with spot homogeneity, which contributed to the observed high reproducibility (
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- 2019
135. GPER‐induced signaling is essential for the survival of breast cancer stem cells
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Jyh-Cherng Yu, Ya-Hui Wang, Yu-Tzu Chan, Yu-Ju Lin, Wen-Ying Chang, Yi-Ting Wang, Jen-Chine Wu, Hsin-Yi Wu, Ruey-Jen Lin, Yu-Ju Chen, Alice L. Yu, Alan C.‐Y. Lai, and Wen-Wei Chang
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Cancer Research ,Cell Survival ,medicine.drug_class ,Breast Neoplasms ,Biology ,Receptors, G-Protein-Coupled ,Mice ,Molecular Cancer Biology ,03 medical and health sciences ,0302 clinical medicine ,Cell Line, Tumor ,Spheroids, Cellular ,medicine ,Animals ,Humans ,BAD ,Gene silencing ,Breast ,Phosphorylation ,Cell Proliferation ,G protein-coupled receptor ,Errata ,tamoxifen ,breast cancer stem cell ,phosphoproteomics ,Transfection ,GPER ,Cyclic AMP-Dependent Protein Kinases ,Xenograft Model Antitumor Assays ,Receptors, Estrogen ,Oncology ,Estrogen ,Gene Knockdown Techniques ,030220 oncology & carcinogenesis ,Neoplastic Stem Cells ,Cancer research ,Female ,bcl-Associated Death Protein ,Stem cell ,Receptors, Progesterone ,Tamoxifen ,Signal Transduction ,medicine.drug - Abstract
G protein‐coupled estrogen receptor‐1 (GPER), a member of the G protein‐coupled receptor (GPCR) superfamily, mediates estrogen‐induced proliferation of normal and malignant breast epithelial cells. However, its role in breast cancer stem cells (BCSCs) remains unclear. Here we showed greater expression of GPER in BCSCs than non‐BCSCs of three patient‐derived xenografts of ER−/PR+ breast cancers. GPER silencing reduced stemness features of BCSCs as reflected by reduced mammosphere forming capacity in vitro, and tumor growth in vivo with decreased BCSC populations. Comparative phosphoproteomics revealed greater GPER‐mediated PKA/BAD signaling in BCSCs. Activation of GPER by its ligands, including tamoxifen (TMX), induced phosphorylation of PKA and BAD‐Ser118 to sustain BCSC characteristics. Transfection with a dominant‐negative mutant BAD (Ser118Ala) led to reduced cell survival. Taken together, GPER and its downstream signaling play a key role in maintaining the stemness of BCSCs, suggesting that GPER is a potential therapeutic target for eradicating BCSCs., What's new? G protein‐coupled estrogen receptor‐1 (GPER) mediates estrogen‐induced proliferation of normal and malignant breast epithelial cells. However, the role of GPER in breast cancer stem cells (BCSC) biology remains unclear. Here, using patient‐derived xenografts of ER–/PR+ breast cancer, the authors found higher expression of GPER in BCSCs than non‐BCSCs. Moreover, the results indicated that stemness features were sustained via GPER‐mediated PKA/BAD phosphorylation. Stimulation by the GPER ligand tamoxifen enhanced BCSC cell viability and population and BAD phosphorylation. The findings revealed a vital role of GPER‐mediated signaling pathways in BCSC survival, suggesting GPER as a potential therapeutic target for eradicating BCSCs.
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- 2019
136. Boronate affinity-based photoactivatable magnetic nanoparticles for the oriented and irreversible conjugation of Fc-fused lectins and antibodies† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c9sc01613a
- Author
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Chun-Cheng Lin, Chen-Yo Fan, Yi-Ren Hou, Kuo Chu Hwang, Mira Anne C. dela Rosa, Yu-Ju Chen, Avijit K. Adak, Penk Yeir Low, Juanilita T. Waniwan, and Takashi Angata
- Subjects
Antiserum ,chemistry.chemical_classification ,inorganic chemicals ,010405 organic chemistry ,medicine.drug_class ,General Chemistry ,Plasma protein binding ,010402 general chemistry ,Monoclonal antibody ,01 natural sciences ,0104 chemical sciences ,Cell membrane ,chemistry.chemical_compound ,Chemistry ,medicine.anatomical_structure ,chemistry ,Diazirine ,medicine ,Biophysics ,Glycoprotein ,Fetal bovine serum ,Boronic acid - Abstract
A combination of boronic acid and a photoactivatable diazirine enables oriented conjugation of Fc-fused lectins and antibodies on nanoparticles., The utilization of immuno-magnetic nanoparticles (MNPs) for the selective capture, enrichment, and separation of specific glycoproteins from complicated biological samples is appealing for the discovery of disease biomarkers. Herein, MNPs were designed and anchored with abundant boronic acid (BA) and photoreactive alkyl diazirine (Diaz) functional groups to obtain permanently tethered Fc-fused Siglec-2 and antiserum amyloid A (SAA) mAb with the assistance of reversible boronate affinity and UV light activation in an orientation-controlled manner. The Siglec-2–Fc-functionalized MNPs showed excellent stability in fetal bovine serum (FBS) and excellent efficiency in the extraction of cell membrane glycoproteins. The anti-SAA mAb-functionalized MNPs maintained active Ab orientation and preserved antigen recognition capability in biological samples. Thus, the BA–Diaz-based strategy holds promise for the immobilization of glycoproteins, such as antibodies, with the original protein binding activity maintained, which can provide better enrichment for the sensitive detection of target proteins.
- Published
- 2019
137. Myristoylation-Dependent Palmitoylation of the Receptor Tyrosine Kinase Adaptor FRS2α
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Barbara Barylko, Helen L. Yin, Isaac Angert, Clinton A. Taylor, Joseph P. Albanesi, Jen Liou, Hui Qiao Sun, Joachim D. Mueller, Jared Hennen, Yu Ju Chen, and Yan Chen
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Lipoylation ,Green Fluorescent Proteins ,Palmitic Acid ,Golgi Apparatus ,Myristic Acid ,Biochemistry ,Article ,Receptor tyrosine kinase ,Membrane Microdomains ,Prenylation ,Palmitoylation ,Cell Line, Tumor ,Humans ,Cysteine ,Adaptor Proteins, Signal Transducing ,Myristoylation ,biology ,Chemistry ,Membrane Proteins ,Signal transducing adaptor protein ,Cell biology ,HEK293 Cells ,Spectrometry, Fluorescence ,Fibroblast growth factor receptor ,Mutation ,biology.protein ,Phosphorylation ,lipids (amino acids, peptides, and proteins) ,GRB2 - Abstract
An early step in signaling from activated receptor tyrosine kinases (RTKs) is the recruitment of cytosolic adaptor proteins to autophosphorylated tyrosines in the receptor cytoplasmic domains. Fibroblast growth factor receptor substrate 2α (FRS2α) associates via its phosphotyrosine-binding domain (PTB) to FGF receptors (FGFRs). Upon FGFR activation, FRS2α undergoes phosphorylation on multiple tyrosines, triggering recruitment of the adaptor Grb2 and the tyrosine phosphatase Shp2, resulting in stimulation of PI3K/AKT and MAPK signaling pathways. FRS2α also undergoes N-myristoylation, which was shown to be important for its localization to membranes and its ability to stimulate downstream signaling events (Kouhara et al., 1997). Here we show that FRS2α is also palmitoylated in cells and that cysteines 4 and 5 account for the entire modification. We further show that mutation of those two cysteines interferes with FRS2α localization to the plasma membrane (PM), and we quantify this observation using fluorescence fluctuation spectroscopy approaches. Importantly, prevention of myristoylation by introduction of a G2A mutation also abrogates palmitoylation, raising the possibility that signaling defects previously ascribed to the G2A mutant may actually be due to a failure of that mutant to undergo palmitoylation. Our results demonstrate that FRS2α undergoes coupled myristoylation and palmitoylation. Unlike stable cotranslational modifications, such as myristoylation and prenylation, palmitoylation is reversible due to the relative lability of the thioester linkage. Therefore, palmitoylation may provide a mechanism, in addition to phosphorylation, for dynamic regulation of FRS2 and its downstream signaling pathways.
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- 2019
138. Internationalization and investment-cash flow sensitivity: Evidence from Taiwan
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Yu-Ju Chen, Cho-Min Lin, I-Hsin Chien, and Tsun-Jui Hsieh
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Internationalization ,Strategy and Management ,0502 economics and business ,05 social sciences ,Significant difference ,050211 marketing ,Cash flow ,Sample (statistics) ,Business ,Monetary economics ,Business and International Management ,Investment (macroeconomics) ,050203 business & management - Abstract
The primary goal of this study was to investigate how the degree of internationalization affects firms' investment-cash flow sensitivity (ICFS) using a sample of Taiwanese listed firms. Our empirical results indicate that a higher degree of internationalization tends to lower its ICFS. Moreover, our findings also suggest that there is no significant difference between group-affiliated firms and unaffiliated firms in the relationship between internationalization and firms’ ICFS. The findings contribute to the financial literature by clarifying internationalization, ICFS and business groups.
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- 2019
139. Regulation of miRNA Biogenesis and Histone Modification by K63-Polyubiquitinated DDX17 Controls Cancer Stem-like Features
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Kou-Juey Wu, Yi-Ting Wang, Han-Yu Yeh, Yu-Ju Chen, Han Tsang Wu, Ming Hsui Tsai, Shih-Han Kao, and Wei-Chung Cheng
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Ribonuclease III ,0301 basic medicine ,Cancer Research ,Ubiquitin-Protein Ligases ,Metastasis ,DEAD-box RNA Helicases ,Histones ,03 medical and health sciences ,0302 clinical medicine ,SOX2 ,Cell Line, Tumor ,microRNA ,medicine ,Humans ,Histone code ,p300-CBP Transcription Factors ,Adaptor Proteins, Signal Transducing ,biology ,Tumor Suppressor Proteins ,Ubiquitination ,YAP-Signaling Proteins ,Hypoxia-Inducible Factor 1, alpha Subunit ,medicine.disease ,Ubiquitin ligase ,Histone Code ,MicroRNAs ,030104 developmental biology ,Histone ,Oncology ,Acetylation ,030220 oncology & carcinogenesis ,Neoplastic Stem Cells ,biology.protein ,Cancer research ,Biogenesis ,Transcription Factors - Abstract
Markers of cancer stemness predispose patients to tumor aggressiveness, drug and immunotherapy resistance, relapse, and metastasis. DDX17 is a cofactor of the Drosha–DGCR8 complex in miRNA biogenesis and transcriptional coactivator and has been associated with cancer stem-like properties. However, the precise mechanism by which DDX17 controls cancer stem-like features remains elusive. Here, we show that the E3 ligase HectH9 mediated K63-polyubiquitination of DDX17 under hypoxia to control stem-like properties and tumor-initiating capabilities. Polyubiquitinated DDX17 disassociated from the Drosha–DGCR8 complex, leading to decreased biogenesis of anti-stemness miRNAs. Increased association of polyubiquitinated DDX17 with p300-YAP resulted in histone 3 lysine 56 (H3K56) acetylation proximal to stemness-related genes and their subsequent transcriptional activation. High expression of HectH9 and six stemness-related genes (BMI1, SOX2, OCT4, NANOG, NOTCH1, and NOTCH2) predicted poor survival in patients with head and neck squamous cell carcinoma and lung adenocarcinoma. Our findings demonstrate that concerted regulation of miRNA biogenesis and histone modifications through posttranslational modification of DDX17 underlies many cancer stem-like features. Inhibition of DDX17 ubiquitination may serve as a new therapeutic venue for cancer treatment. Significance: Hypoxia-induced polyubiquitination of DDX17 controls its dissociation from the pri-miRNA–Drosha–DCGR8 complex to reduce anti-stemness miRNA biogenesis and association with YAP and p300 to enhance transcription of stemness-related genes.
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- 2019
140. Recent insights into mammalian ER–PM junctions
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Yu Ju Chen, Jen Liou, and Carlo Giovanni Quintanilla
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Mammals ,0303 health sciences ,Extramural ,Endoplasmic reticulum ,Cell Membrane ,Membrane Proteins ,Cell Biology ,Biology ,Endoplasmic Reticulum ,Lipid Metabolism ,Article ,Coupling (electronics) ,03 medical and health sciences ,0302 clinical medicine ,Membrane ,Biophysics ,Animals ,Humans ,Calcium ,030217 neurology & neurosurgery ,030304 developmental biology - Abstract
ER-PM junctions are subcellular sites where the endoplasmic reticulum (ER) and the plasma membrane (PM) are kept in close appositions, providing a platform for inter-organelle contact. These membrane contact sites are important for many physiological functions in mammalian cells, including excitation-contraction coupling, store-operated Ca(2+) entry, and non-vesicular transfer of lipids between the ER and the PM. Here we review recent insights into the 3D structure and spatial organization of ER-PM junctions in mammalian cells as well as molecular mechanisms underlying the formation and functions of mammalian ER-PM junctions.
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- 2019
141. A catholically pre-treated low cost screen-printed carbon electrode surface for metal compounds electrocatalyst like hydrogen evolution activity
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Jyh-Myng Zen, Yu-Ju Chen, Annamalai Senthil Kumar, Jen-Lin Chang, Ting-Hao Yang, and Wan-Ling Cheng
- Subjects
Tafel equation ,Hydrogen ,Graphene ,General Chemical Engineering ,Inorganic chemistry ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrocatalyst ,Electrochemistry ,01 natural sciences ,0104 chemical sciences ,Analytical Chemistry ,law.invention ,Metal ,chemistry ,law ,visual_art ,Electrode ,visual_art.visual_art_medium ,0210 nano-technology ,Carbon - Abstract
Search for simple and economical electrocatalyst for the hydrogen gas evolution reaction (HER), which can resemble to the performance of Pt and other precious metals, is a challenging research interest. In this work, a systematic effect of pre-treatment potential of screen-printed carbon (SPCE) surface on the HER performance in 0.5 M H2SO4 was carried out. A new observation of a low potential HER (onset potential, Eonset = −0.02 V vs. RHE) at a cathodic potential, −0.5 V vs. Ag/AgCl on 1 hr pre-treated screen-printed carbon electrode (SPCE*, * = pre-treated) was observed. Physicochemical and electrochemical characterizations of the SPCE* by field emission scanning electron-microscope, Raman, IR and X-Ray photoelectron spectroscopes reveals specific generation of carboxylic acid functionalized carbon surface and in turn for the enhanced HER on the modified electrode surface. Electrochemical characterization of SPCE* with Fe(CN)63− support the observation. A marked decrement in the peak current and significant increase in the peak-to-peak separation potential response due electrostatic repulsion between the anion sites of Fe(CN)63− and –COO– were noticed. This observation is in parallel with the reduced electrical double layer capacitance value of the SPCE* system. The Eonset and Tafel value (54.7 mV dec−1) obtained here are comparable to those at Pt, MoS2, MoSe2 and superior over the N- and P-doped graphene/carbon electrocatalysts for HER. A prototype HER system was developed and demonstrated for H2 gas production at a rate of 0.0053 μM s−1 (Operating potential = −0.5 V vs Ag/AgCl), which is comparable to that of precious metal and metal compound electrocatalysts based HER performance.
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- 2019
142. Uses of dietary supplements and herbal medicines during pregnancy in women undergoing assisted reproductive technologies– A study of taiwan birth cohort
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Shu-Hsin Lee, Ching-Yi Lin, Maw-Sheng Lee, Ching-Pyng Kuo, Meng Chih Lee, and Yu-Ju Chen
- Subjects
Adult ,Male ,medicine.medical_specialty ,Reproductive Techniques, Assisted ,Birth weight ,Taiwan ,Reproductive technology ,lcsh:Gynecology and obstetrics ,Cohort Studies ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Pregnancy ,Surveys and Questionnaires ,Medicine ,Birth Weight ,Humans ,lcsh:RG1-991 ,030219 obstetrics & reproductive medicine ,business.industry ,Obstetrics ,Infant, Newborn ,Pregnancy Outcome ,Obstetrics and Gynecology ,Gestational age ,Infant ,food and beverages ,Vitamins ,medicine.disease ,Low birth weight ,Pill ,Case-Control Studies ,Dietary Supplements ,Female ,medicine.symptom ,Multivitamin ,Birth cohort ,business ,Drugs, Chinese Herbal - Abstract
Objective: This study aimed to assess the efficacy of dietary supplements and herbal medicines for the care of pregnant women undergoing assisted reproductive technologies (ART). Materials and methods: A total of 366 women undergoing ART and their children from the dataset of Taiwan Birth Cohort Study (TBCS, 2005) were enrolled in this study. Structured questionnaires were applied to collect the health information at 6-month follow-up after their delivery. The related use patterns were analyzed to investigate the final birth outcomes. Results: Comparing with those of non-ART group, the women undergoing ART consumed more supplements of multivitamin, fish oil, and calcium than herbal medicines during pregnancy. This study revealed that the consumptions of multivitamin, calcium pills, Genseng, and Suz-Wu-Tang were associated with low birth weight, whereas the intake of Huanglian was associated with birth weight. Besides, the uses of multivitamin and Suz-Wu-Tang were related to lower gestational age of infants. Conclusions: Physicians and nurses must educate themselves in dietary supplements and herbal/alternative medicines for offering accurate advices for pregnant women to optimize their care. The results could be of reference for further investigation on longitudinal effects of dietary supplements and herbal medicines during pregnancy in women undergoing ART continuously followed with TBCS. Keywords: Assisted reproductive technologies (ART), Dietary supplements, Herbal medicines, Pregnancy, Postpartum
- Published
- 2019
143. Alteration of mesenchymal stem cells polarity by laminar shear stimulation promoting β-catenin nuclear localization
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Wei Tse Hsu, Oscar K. Lee, Yu-Ju Chen, Chun A. Changou, Tzu Hao Chang, Chia Li Han, Meng Hua Yen, Wei Ta Chen, Jennifer Hui Chun Ho, and Ji-Yen Cheng
- Subjects
Angiogenesis ,Biophysics ,Bioengineering ,02 engineering and technology ,Cell junction ,Biomaterials ,03 medical and health sciences ,Paracrine signalling ,Human Umbilical Vein Endothelial Cells ,Humans ,Protein Interaction Maps ,Wnt Signaling Pathway ,Cells, Cultured ,beta Catenin ,030304 developmental biology ,Cell Nucleus ,0303 health sciences ,Chemistry ,Mesenchymal stem cell ,Wnt signaling pathway ,Cell Polarity ,Mesenchymal Stem Cells ,021001 nanoscience & nanotechnology ,Actins ,Cell biology ,Endothelial stem cell ,Mechanics of Materials ,Catenin ,Ceramics and Composites ,Mechanosensitive channels ,Stress, Mechanical ,0210 nano-technology - Abstract
Mesenchymal stem cell (MSC) is mechanosensitive and the respond to mechanical force is pattern specific. We previously reported that oscillatory shear stress at 0.5 ± 4 dyne/cm 2 guided MSCs polarity vertical to net flow direction before apolaric stage at 30 min resulting in phosphorylation of β-catenin and inhibition of Wnt signaling . This time, we explored laminar shear stress (LS) at 0.5 dyne/cm 2 polarized MSCs by guiding F-actin orientation parallel to the flow direction before apolarity at 30 min accompanied with activation of Wnt signaling. Time-dependent microarray analysis supported cell-cell junctional complex of MSCs was the major mechanosensor on MSCs to respond 0.5 dyne/cm 2 LS. Three-dimensional immunofluorescence image confirmed LS promoting β-catenin nuclear localization during 15 min to 1 h with a peak at 30 min. Functional analysis of proteomic study on MSC with 30 min LS stimulation indicated that upregulation of β-catenin downstream proteins related to cardiovascular development, endothelial cell protection and angiogenesis . Conditioned medium from MSCs with 30 min LS stimulation improved the viability of human endothelial cells from oxidative damage . In conclusion, 0.5 dyne/cm 2 LS on MSCs for 30 min guides MSCs lack of polarity and promotes β-catenin nuclear translocation favoring Wnt activation and paracrine cardiovascular support.
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- 2019
144. DNA Demethylation by DNMT3A and DNMT3B in vitro and of Methylated Episomal DNA in Transiently Transfected Cells
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Kai Lin Peng, Mei-Chun Tseng, Yu-Ju Chen, Che Kun James Shen, Chun Chang Chen, Miao-Hsia Lin, Biswanath Chatterjee, and Mu Sheng Wu
- Subjects
0301 basic medicine ,Methyltransferase ,DNA repair ,Cellular differentiation ,Biophysics ,Transfection ,Biochemistry ,Cell Line ,DNA Methyltransferase 3A ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,Structural Biology ,Proto-Oncogene Proteins ,Genetics ,Animals ,Humans ,DNA (Cytosine-5-)-Methyltransferases ,Epigenetics ,Molecular Biology ,Demethylation ,Chemistry ,Mouse Embryonic Stem Cells ,DNA ,Cell biology ,DNA Demethylation ,DNA-Binding Proteins ,030104 developmental biology ,DNA demethylation ,DNA methylation ,Plasmids - Abstract
The DNA methylation program in vertebrates is an essential part of the epigenetic regulatory cascade of development, cell differentiation, and progression of diseases including cancer. While the DNA methyltransferases (DNMTs) are responsible for the in vivo conversion of cytosine (C) to methylated cytosine (5mC), demethylation of 5mC on cellular DNA could be accomplished by the combined action of the ten-eleven translocation (TET) enzymes and DNA repair. Surprisingly, the mammalian DNMTs also possess active DNA demethylation activity in vitro in a Ca2+- and redox conditions-dependent manner, although little is known about its molecular mechanisms and occurrence in a cellular context. In this study, we have used LC-MS/MS to track down the fate of the methyl group removed from 5mC on DNA by mouse DNMT3B in vitro and found that it becomes covalently linked to the DNA methylation catalytic cysteine of the enzyme. We also show that Ca2+ homeostasis-dependent but TET1/TET2/TET3/TDG-independent demethylation of methylated episomal DNA by mouse DNMT3A or DNMT3B can occur in transfected human HEK 293 and mouse embryonic stem (ES) cells. Based on these results, we present a tentative working model of Ca2+ and redox conditions-dependent active DNA demethylation by DNMTs. Our study substantiates the potential roles of the vertebrate DNMTs as double-edged swords in DNA methylation-demethylation during Ca2+-dependent physiological processes.
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- 2018
145. Surface markers of human embryonic stem cells: a meta analysis of membrane proteomics reports
- Author
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Ghasem Hosseini Salekdeh, Jaesuk Lee, Faezeh Shekari, Bonghee Lee, Chia Li Han, Yu-Ju Chen, Hossein Baharvand, Vivek Gupta, Mehdi Mirzaei, and Paul A. Haynes
- Subjects
Proteomics ,0301 basic medicine ,Cell type ,Human Embryonic Stem Cells ,Biotin ,Computational biology ,Biology ,Biochemistry ,Membrane markers ,Ion Channels ,Transcriptome ,03 medical and health sciences ,Cell Adhesion ,Humans ,Molecular Biology ,Cluster of differentiation ,surface markers ,Gene Expression Profiling ,Cell Membrane ,Membrane Proteins ,Embryonic stem cell ,Enzymes ,030104 developmental biology ,Membrane protein ,embryonic structures ,Cancer cell ,Proteome ,Biomarkers ,Subcellular Fractions - Abstract
Introduction: Human embryonic stem cells (hESCs) have unique biological features and attributes that make them attractive in various areas of biomedical research. With heightened applications, there is an ever increasing need for advancement of proteome analysis. Membrane proteins are one of the most important subset of hESC proteins as they can be used as surface markers. Areas covered: This review discusses commonly used surface markers of hESCs, and provides in-depth analysis of available hESC membrane proteome reports and the existence of these markers in many other cell types, especially cancer cells. Appreciating, existing ambiguity in the definition of a mem- brane protein, we have attempted a meta analysis of the published membrane protein reports of hESCs by using a combination of protein databases and prediction tools to find the most confident plasma membrane proteins in hESCs. Furthermore, responsiveness of plasma membrane proteins to differentiation has been discussed based on available transcriptome profiling data bank. Expert commentary: Combined transcriptome and membrane proteome analysis highlighted additional proteins that may eventually find utility as new cell surface markers.
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- 2018
146. Ultra-streamlined single cell proteomics by all-in-one chip and data-independent-acquisition mass spectrometry
- Author
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Hsiung-Lin Tu, Bayarmaa Enkhbayar, Reta Birhanu Kitata, Takashi Angata, Sofani Gebreyesus, Kuo-I Lin, Eric Sheng-Wen Chen, Yu-Ju Chen, and Asad Ali Siyal
- Subjects
Computer science ,Data-independent acquisition ,Computational biology ,Mass spectrometry ,Chip ,Proteomics - Abstract
Single cell proteomics provides the ultimate resolution to reveal cellular phenotypic heterogeneity and functional network underlying biological processes. Here, we present an ultra-streamlined workflow combining an integrated proteomic chip (iProChip) and data-independent-acquisition (DIA) mass spectrometry for sensitive microproteomics analysis down to single cell level. The iProChip offers multiplexed and automated all-in-one station from cell isolation/counting/imaging to complete proteomic processing within a single device. By mapping to project-specific spectra libraries, the iProChip-DIA enables profiling of 1160 protein groups from triplicate analysis of a single mammalian cell. Furthermore, the applicability of iProChip-DIA was demonstrated using both adherent and non-adherent malignant cells, which reveals 5 orders of proteome coverage, highly consistent ~100-fold protein quantification (1-100 cells) and high reproducibility with low missing values (
- Published
- 2021
147. Meaning of critical traumatic injury for a patient's body and self
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Hsien Hsien Chiang, Yu Ju Chen, Yuan Hao Chen, Hui Hsun Chiang, Yu Lun Tsai, and Jen Jiuan Liaw
- Subjects
Psychotherapist ,030504 nursing ,Critical Care ,Taiwan ,Emotional stress ,Morals ,Phenomenology (philosophy) ,03 medical and health sciences ,Issues, ethics and legal aspects ,0302 clinical medicine ,Traumatic injury ,Intensive care ,Humans ,030212 general & internal medicine ,Meaning (existential) ,0305 other medical science ,Psychology ,Qualitative Research ,Qualitative research - Abstract
Background: Patients with a traumatic injury often require intensive care for life-saving treatments. Physical suffering and emotional stress during critical care can be alleviated by ethical caring provided by nurses. The relationship between body and self are fundamentally inseparable. Nurses need to understand the impacts of traumatic injury on a patient’s body and self. Aim: To understand the meaning of traumatic injury for body and self for patients receiving intensive care. Research design: A qualitative descriptive study using Giorgi’s phenomenological approach. Participants and research context: Patients receiving intensive care for physical trauma were selected by purposive sampling (N = 15) from a medical center in Taiwan. Individual in-depth, face-to-face audiotaped interviews, guided by semi-structured questions, were used to collect data. Each interview lasted 30–60 min. Audiotaped interviews were transcribed and analyzed. Ethical considerations: This study was approved by the Institutional Review Board of the medical center. Findings: The impact of the experience of traumatic injury on participants’ body and self was described by three main themes: (1) Searching for the meaning of the injured body, (2) Feeling trapped in the bed, and (3) The carer and the cared-for. Discussion and conclusion: The implications of the three themes described in the findings are as follows: Trauma as a source of meaning; Body and self are mutually limiting or mutually enabling; and Ethical relationships. The experience of needing intensive care following a traumatic injury on the body and self was dynamic and mutual. The experience of the injury changed the relationship between body and self, and gave new meaning to life. Nurses play a crucial role in continuity of care by understanding the meaning of a traumatic injury for patient’s body and self that facilitates ethical care and recovery from injury.
- Published
- 2021
148. Streamlined single-cell proteomics by an integrated microfluidic chip and data-independent acquisition mass spectrometry
- Author
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Sofani Tafesse Gebreyesus, Asad Ali Siyal, Reta Birhanu Kitata, Eric Sheng-Wen Chen, Bayarmaa Enkhbayar, Takashi Angata, Kuo-I Lin, Yu-Ju Chen, and Hsiung-Lin Tu
- Subjects
Proteomics ,Multidisciplinary ,Lung Neoplasms ,Proteome ,Lab-on-a-chip ,Mass spectrometry ,Science ,Microfluidics ,General Physics and Astronomy ,Reproducibility of Results ,General Chemistry ,Cell Separation ,General Biochemistry, Genetics and Molecular Biology ,Article ,Workflow ,Cell Line, Tumor ,Lab-On-A-Chip Devices ,Animals ,Humans - Abstract
Single-cell proteomics can reveal cellular phenotypic heterogeneity and cell-specific functional networks underlying biological processes. Here, we present a streamlined workflow combining microfluidic chips for all-in-one proteomic sample preparation and data-independent acquisition (DIA) mass spectrometry (MS) for proteomic analysis down to the single-cell level. The proteomics chips enable multiplexed and automated cell isolation/counting/imaging and sample processing in a single device. Combining chip-based sample handling with DIA-MS using project-specific mass spectral libraries, we profile on average ~1,500 protein groups across 20 single mammalian cells. Applying the chip-DIA workflow to profile the proteomes of adherent and non-adherent malignant cells, we cover a dynamic range of 5 orders of magnitude with good reproducibility and, Single-cell proteomics is an emerging approach to characterize cell-to-cell differences. Here, the authors develop chips that enable complete proteomic sample processing down to the single-cell level and integrate them with DIA-MS into a streamlined single-cell proteomics workflow.
- Published
- 2021
149. Asia-Oceania HUPO: Past, Present, and Future
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Yasushi Ishihama, Yu-Ju Chen, Je-Yoel Cho, Stuart J. Cordwell, Terence Chuen Wai Poon, Max C. M. Chung, Ho Jeong Kwon, and Teck Yew Low
- Subjects
Proteomics ,Societies, Scientific ,0303 health sciences ,HUPO ,Asia ,Internationality ,proteomics organization ,030302 biochemistry & molecular biology ,Oceania ,Library science ,Secretary general ,Biochemistry ,History, 21st Century ,proteomics community ,Analytical Chemistry ,03 medical and health sciences ,Beijing ,Political science ,Report ,Asia-Oceania ,China ,Molecular Biology ,Vice president ,AOHUPO ,030304 developmental biology - Abstract
The Asia-Oceania Human Proteome Organization (AOHUPO; www.aohupo.org) was officially founded on June 7, 2001, by Richard J. Simpson (Australia), Akira Tsugita (Japan), and Young-Ki Paik (Korea) and launched on October 1–4, 2001, at the second scientific meeting of the International Proteomics Conference held in Canberra, Australia. Inaugural council members of the AOHUPO elected were Richard J. Simpson (Australia, president), Qi-Chang Xia (China), Kazuyuki Nakamura (Japan), Akira Tsugita (Japan, VIce President), Young-Ki Paik (Korea, secretary general), Mike Hubbard (New Zealand), Max C. M. Chung (Singapore), Shui-Tien Chen (Taiwan), and John Bennett (Philippines). The first AOHUPO conference was held on March 26–27, 2002, at the Seoul National University, Seoul, Korea, conjointly with the second Annual Meeting of KHUPO. Since then, biennial AOHUPO conferences have been held in Taipei (2004), Singapore (2006), Cairns (2008), Hyderabad (2010), Beijing (2012), Bangkok (2014), Sun Moon Lake (2016), and Osaka (2018). The 10th AOHUPO conference is scheduled to be held in Busan on June 30 to July 2, 2021, to celebrate our 20th anniversary., Graphical Abstract, Highlights • AOHUPO celebrates its 20th anniversary in 2021. • The diversity of the AOHUPO society is featured. • The past and current activities as well as the future direction are reported., In Brief We summarized the activities of the AOHUPO over the past 20 years, from its foundation to the present. The AOHUPO is the only regional HUPO organization that straddles the northern and southern hemispheres, and the needs of the society for proteomics are not uniform. Despite this diversity, the research in the AOHUPO has made steady progress, and we believe that this pace of evolution can be further accelerated in the next 20 years with the addition of younger generations.
- Published
- 2020
150. Standardization and harmonization of distributed multi-center proteotype analysis supporting precision medicine studies
- Author
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Thomas P. Conrads, Connie R. Jimenez, Xiu-Xuan Sun, Sebastien Gallien, Stuart J. Cordwell, Sandra Goetze, Kelly A. Conrads, Martin R. Larsen, Andrew Macklin, Yue Xuan, Benjamin L. Parker, Yu-Ju Chen, Sander R. Piersma, Davide Chiasserini, Amanda Khoo, Bernd Wollscheid, Nicholas W. Bateman, Ben Crossett, Hongwen Zhu, Siqi Liu, Mo Hu, Zhi-Nan Chen, Pedro Navarro, Muhammad Tahir, Reta Birhanu Kitata, Albert Sickmann, Yue Zhou, Hu Zhou, Brian L. Hood, Christina Loosse, Guixue Hou, Niyati Parikh, Thomas Kislinger, CCA - Cancer biology and immunology, Medical oncology laboratory, and CCA - Cancer Treatment and quality of life
- Subjects
Proteomics ,0301 basic medicine ,Proteome ,Standardization ,Test data generation ,Computer science ,Science ,General Physics and Astronomy ,Harmonization ,Mass Spectrometry ,Article ,General Biochemistry, Genetics and Molecular Biology ,Workflow ,03 medical and health sciences ,Medical research ,0302 clinical medicine ,Operation mode ,Data acquisition ,Cell Line, Tumor ,Humans ,Precision Medicine ,lcsh:Science ,Mass Spectrometry/methods ,Digitization ,Cancer ,Ovarian Neoplasms ,Multidisciplinary ,Precision Medicine/methods ,General Chemistry ,Reference Standards ,Precision medicine ,Data science ,030104 developmental biology ,030220 oncology & carcinogenesis ,Proteome/chemistry ,lcsh:Q ,Female ,Ovarian Neoplasms/chemistry ,Proteomics/methods ,Systems biology - Abstract
Cancer has no borders: Generation and analysis of molecular data across multiple centers worldwide is necessary to gain statistically significant clinical insights for the benefit of patients. Here we conceived and standardized a proteotype data generation and analysis workflow enabling distributed data generation and evaluated the quantitative data generated across laboratories of the international Cancer Moonshot consortium. Using harmonized mass spectrometry (MS) instrument platforms and standardized data acquisition procedures, we demonstrate robust, sensitive, and reproducible data generation across eleven international sites on seven consecutive days in a 24/7 operation mode. The data presented from the high-resolution MS1-based quantitative data-independent acquisition (HRMS1-DIA) workflow shows that coordinated proteotype data acquisition is feasible from clinical specimens using such standardized strategies. This work paves the way for the distributed multi-omic digitization of large clinical specimen cohorts across multiple sites as a prerequisite for turning molecular precision medicine into reality., Distributed multi-omic digitization of clinical specimen across multiple sites is a prerequisite for turning molecular precision medicine into reality. Here, the authors show that coordinated proteotype data acquisition is feasible using standardized MS data acquisition and analysis strategies.
- Published
- 2020
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