28 results on '"Zhi-Xuan Li"'
Search Results
2. Interferon-α stimulates DExH-box helicase 58 to prevent hepatocyte ferroptosis
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Kai-Wei Jia, Ren-Qi Yao, Yi-Wen Fan, Ding-Ji Zhang, Ye Zhou, Min-Jun Wang, Li-Yuan Zhang, Yue Dong, Zhi-Xuan Li, Su-Yuan Wang, Mu Wang, Yun-Hui Li, Lu-Xin Zhang, Ting Lei, Liang-Chen Gui, Shan Lu, Ying-Yun Yang, Si-Xian Wang, Yi-Zhi Yu, Yong-Ming Yao, and Jin Hou
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Ischemia/reperfusion (I/R) ,DExH-box helicase 58 (DHX58) ,Glutathione peroxidase 4 (GPX4) ,m6A modification ,YT521-B homology domain containing 2 (YTHDC2) ,Medicine (General) ,R5-920 ,Military Science - Abstract
Abstract Background Liver ischemia/reperfusion (I/R) injury is usually caused by hepatic inflow occlusion during liver surgery, and is frequently observed during war wounds and trauma. Hepatocyte ferroptosis plays a critical role in liver I/R injury, however, it remains unclear whether this process is controlled or regulated by members of the DEAD/DExH-box helicase (DDX/DHX) family. Methods The expression of DDX/DHX family members during liver I/R injury was screened using transcriptome analysis. Hepatocyte-specific Dhx58 knockout mice were constructed, and a partial liver I/R operation was performed. Single-cell RNA sequencing (scRNA-seq) in the liver post I/R suggested enhanced ferroptosis by Dhx58 hep−/− . The mRNAs and proteins associated with DExH-box helicase 58 (DHX58) were screened using RNA immunoprecipitation-sequencing (RIP-seq) and IP-mass spectrometry (IP-MS). Results Excessive production of reactive oxygen species (ROS) decreased the expression of the IFN-stimulated gene Dhx58 in hepatocytes and promoted hepatic ferroptosis, while treatment using IFN-α increased DHX58 expression and prevented ferroptosis during liver I/R injury. Mechanistically, DHX58 with RNA-binding activity constitutively associates with the mRNA of glutathione peroxidase 4 (GPX4), a central ferroptosis suppressor, and recruits the m6A reader YT521-B homology domain containing 2 (YTHDC2) to promote the translation of Gpx4 mRNA in an m6A-dependent manner, thus enhancing GPX4 protein levels and preventing hepatic ferroptosis. Conclusions This study provides mechanistic evidence that IFN-α stimulates DHX58 to promote the translation of m6A-modified Gpx4 mRNA, suggesting the potential clinical application of IFN-α in the prevention of hepatic ferroptosis during liver I/R injury.
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- 2024
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3. METTL14 downregulation drives S100A4+ monocyte-derived macrophages via MyD88/NF-κB pathway to promote MAFLD progression
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Yue-fan Wang, Wen-li Zhang, Zhi-xuan Li, Yue Liu, Jian Tan, Hao-zan Yin, Zhi-chao Zhang, Xian-jie Piao, Min-hao Ruan, Zhi-hui Dai, Si-jie Wang, Chen-yang Mu, Ji-hang Yuan, Shu-han Sun, Hui Liu, and Fu Yang
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Medicine ,Biology (General) ,QH301-705.5 - Abstract
Abstract Without intervention, a considerable proportion of patients with metabolism‐associated fatty liver disease (MAFLD) will progress from simple steatosis to metabolism‐associated steatohepatitis (MASH), liver fibrosis, and even hepatocellular carcinoma. However, the molecular mechanisms that control progressive MAFLD have yet to be fully determined. Here, we unraveled that the expression of the N6-methyladenosine (m6A) methyltransferase METTL14 is remarkably downregulated in the livers of both patients and several murine models of MAFLD, whereas hepatocyte-specific depletion of this methyltransferase aggravated lipid accumulation, liver injury, and fibrosis. Conversely, hepatic Mettl14 overexpression alleviated the above pathophysiological changes in mice fed on a high-fat diet (HFD). Notably, in vivo and in vitro mechanistic studies indicated that METTL14 downregulation decreased the level of GLS2 by affecting the translation efficiency mediated by YTHDF1 in an m6A-depedent manner, which might help to form an oxidative stress microenvironment and accordingly recruit Cx3cr1 + Ccr2 + monocyte-derived macrophages (Mo-macs). In detail, Cx3cr1 + Ccr2 + Mo-macs can be categorized into M1-like macrophages and S100A4-positive macrophages and then further activate hepatic stellate cells (HSCs) to promote liver fibrosis. Further experiments revealed that CX3CR1 can activate the transcription of S100A4 via CX3CR1/MyD88/NF-κB signaling pathway in Cx3cr1 + Ccr2 + Mo-macs. Restoration of METTL14 or GLS2, or interfering with this signal transduction pathway such as inhibiting MyD88 could ameliorate liver injuries and fibrosis. Taken together, these findings indicate potential therapies for the treatment of MAFLD progression.
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- 2024
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4. Single-cell transcriptome profiling of sepsis identifies HLA-DR low S100A high monocytes with immunosuppressive function
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Ren-Qi Yao, Peng-Yue Zhao, Zhi-Xuan Li, Yu-Yang Liu, Li-Yu Zheng, Yu Duan, Lu Wang, Rong-Li Yang, Hong-Jun Kang, Ji-Wei Hao, Jing-Yan Li, Ning Dong, Yao Wu, Xiao-Hui Du, Feng Zhu, Chao Ren, Guo-Sheng Wu, Zhao-Fan Xia, and Yong-Ming Yao
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Single-cell analysis ,Sepsis ,Immunosuppression ,S100A ,Human leukocyte antigen DR (HLA-DR) ,Monocytes ,Medicine (General) ,R5-920 ,Military Science - Abstract
Abstract Background Sustained yet intractable immunosuppression is commonly observed in septic patients, resulting in aggravated clinical outcomes. However, due to the substantial heterogeneity within septic patients, precise indicators in deciphering clinical trajectories and immunological alterations for septic patients remain largely lacking. Methods We adopted cross-species, single-cell RNA sequencing (scRNA-seq) analysis based on two published datasets containing circulating immune cell profile of septic patients as well as immune cell atlas of murine model of sepsis. Flow cytometry, laser scanning confocal microscopy (LSCM) imaging and Western blotting were applied to identify the presence of S100A9+ monocytes at protein level. To interrogate the immunosuppressive function of this subset, splenic monocytes isolated from septic wild-type or S100a9 −/− mice were co-cultured with naïve CD4+ T cells, followed by proliferative assay. Pharmacological inhibition of S100A9 was implemented using Paquinimod via oral gavage. Results ScRNA-seq analysis of human sepsis revealed substantial heterogeneity in monocyte compartments following the onset of sepsis, for which distinct monocyte subsets were enriched in disparate subclusters of septic patients. We identified a unique monocyte subset characterized by high expression of S100A family genes and low expression of human leukocyte antigen DR (HLA-DR), which were prominently enriched in septic patients and might exert immunosuppressive function. By combining single-cell transcriptomics of murine model of sepsis with in vivo experiments, we uncovered a similar subtype of monocyte significantly associated with late sepsis and immunocompromised status of septic mice, corresponding to HLA-DR low S100A high monocytes in human sepsis. Moreover, we found that S100A9+ monocytes exhibited profound immunosuppressive function on CD4+ T cell immune response and blockade of S100A9 using Paquinimod could partially reverse sepsis-induced immunosuppression. Conclusions This study identifies HLA-DR low S100A high monocytes correlated with immunosuppressive state upon septic challenge, inhibition of which can markedly mitigate sepsis-induced immune depression, thereby providing a novel therapeutic strategy for the management of sepsis.
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- 2023
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5. A lncRNA signature associated with tumor immune heterogeneity predicts distant metastasis in locoregionally advanced nasopharyngeal carcinoma
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Ye-Lin Liang, Yuan Zhang, Xi-Rong Tan, Han Qiao, Song-Ran Liu, Ling-Long Tang, Yan-Ping Mao, Lei Chen, Wen-Fei Li, Guan-Qun Zhou, Yin Zhao, Jun-Yan Li, Qian Li, Sheng-Yan Huang, Sha Gong, Zi-Qi Zheng, Zhi-Xuan Li, Ying Sun, Wei Jiang, Jun Ma, Ying-Qin Li, and Na Liu
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Science - Abstract
Long noncoding RNAs (lncRNAs) can be used for the development of prognostic signatures to predict tumour metastasis. Here the authors identify an immune-associated nine-lncRNA signature for predicting metastasis in a multicentre cohort of locoregionally advanced nasopharyngeal cancer patients.
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- 2022
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6. Terpenoid Glucosides from Gentiana macrophylla That Attenuate TNF-α Induced Pulmonary Inflammation in A549 Cells
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Pei-Qi Huang, Yong-Xin Luo, Yu-Jia Zhang, Zhi-Xuan Li, Yan Wen, Kun Zhang, Dong-Li Li, Jing-Wei Jin, Ri-Hui Wu, and Li-She Gan
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Gentiana macrophylla (Gentianaceae) ,terpenoid glucosides ,pulmonary inflammation ,ELISA ,Organic chemistry ,QD241-441 - Abstract
Four previously undescribed terpenoid glucosides, including one sesquiterpenoid di-glucoside (1), two new iridoid glucosides (2, 3), and a new triterpenoid tri-glucoside (4), were isolated from a 70% ethanol extract of the root of Gentiana macrophylla (Gentianaceae), along with eight known terpenoids. Their structures were determined by spectroscopic techniques, including 1D, 2D NMR, and HRMS (ESI), as well as chemical methods. The absolute configuration of compound 1 was determined by quantum chemical calculation of its theoretical electronic circular dichroism (ECD) spectrum. The sugar moieties of all the new compounds were confirmed to be D-glucose by GC analysis after acid hydrolysis and acetylation. Anti-pulmonary inflammation activity of the iridoids were evaluated on a TNF-α induced inflammation model in A549 cells. Compound 2 could significantly alleviate the release of proinflammatory cytokines IL-1β and IL-8 and increase the expression of anti-inflammatory cytokine IL-10.
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- 2023
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7. Three-dimensional electroanatomical mapping guidelines for the selection of pacing site to achieve cardiac resynchronization therapy
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Bao-Tong Hua, Li-Jin Pu, Xin Tian, Wen-Juan Song, Hao Li, Chao Wang, Xiao-Xia Shao, Rui Li, Shu-Min Li, Zhi-Xuan Li, Jun-Hua Zou, Ling Zhao, and Jing Wang
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three-dimensional electroanatomical mapping ,left bundle branch area pacing ,coronary venous pacing ,cardiac resynchronization therapy (CRT) ,heart failure ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
ObjectivesWe aimed to evaluate the feasibility of left ventricular electroanatomical mapping to choose between left bundle branch area pacing (LBBAP) or coronary venous pacing (CVP).BackgroundThere are several ways to achieve left ventricular activation in cardiac resynchronization therapy (CRT): LBBAP and CVP are two possible methods of delivering CRT. However, the criteria for choosing the best approach remains unknown.MethodsA total of 71 patients with heart failure, reduced ejection fraction, and left bundle branch block (LBBB) were recruited, of which 38 patients underwent the three-dimensional electroanatomical mapping of the left ventricle to accurately assess whether the left bundle branch was blocked and the block level, while the remaining 33 patients were not mapped. Patients with true LBBB achieved CRT by LBBAP, while patients with pseudo-LBBB achieved CRT by CVP. After a mean follow-up of 6 months and 1 year, the QRS duration and transthoracic echocardiography, including mechanical synchrony indices, were evaluated.ResultsTwenty-five patients with true LBBB received LBBAP, while 13 without true LBBB received CVP. Seventeen patients received LBBAP, and 16 patients received CVP without mapping. Paced QRS duration after the implantation of LBBAP and CVP was significantly narrower in the mapping subgroup compared to the non-mapping subgroup. A significant increase in post-implantation left ventricular ejection fraction was observed in patients with LBBAP or CVP, and the mapping subgroup were better than the non-mapping subgroup. After a 12-month follow-up, atrioventricular, intraventricular, and biventricular synchronization were significantly improved in the mapping subgroup compared to non-mapping groups in both LBBAP and CVP.ConclusionIn our study, three-dimensional electroanatomical mapping was used to choose LBBAP or CVP for heart failure patients, which proved feasible, with better cardiac resynchronization in the long-term follow-up. Therefore, three-dimensional electroanatomical mapping before CRT appears to be a reliable method for heart failure patients with LBBB who are indicated for CRT.
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- 2022
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8. Memory-Efficient Gaussian Fitting for Depth Images in Real Time.
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Peter Zhi Xuan Li, Sertac Karaman, and Vivienne Sze
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- 2022
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9. Influences of Heavy Metals in Water Treatment Chemicals on Drinking Water Quality and Risk Management
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Zhi-Xuan, Li, primary, She-Xia, Zhan, additional, Tin-Ian, Kou, additional, Qian-Ning, Zhao, additional, and Chi-Tou, Lei, additional
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- 2024
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10. Supplementary Table S9 from Long Noncoding RNA FAM225A Promotes Nasopharyngeal Carcinoma Tumorigenesis and Metastasis by Acting as ceRNA to Sponge miR-590-3p/miR-1275 and Upregulate ITGB3
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Ying Sun, Na Liu, Jun Ma, Ying-Qin Li, Xin Wen, Jian Zhang, Jia Kou, Xiao-Jun He, FoPing Chen, Rui-Qi Liu, Xiao-Dan Huang, Jia-Wei Lv, Lu-Lu Zhang, Li Lin, Guan-Qun Zhou, Zhi-Xuan Li, and Zi-Qi Zheng
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Supplementary Table S9. The predicted miRNAs that bind with FAM225A according to DIANA Tools
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- 2023
11. Supplemental Tables from Long Noncoding RNA TINCR-Mediated Regulation of Acetyl-CoA Metabolism Promotes Nasopharyngeal Carcinoma Progression and Chemoresistance
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Ying Sun, Na Liu, Jun Ma, Si-Si Xu, Feng Li, Ying-Qin Li, Xiao-Jun He, FoPing Chen, Rui-Qi Liu, Guan-Qun Zhou, Lu-Lu Zhang, Jia-Wei Lv, Jia Kou, Li Lin, Yue Chen, Jun-Yan Li, Xu Liu, Jia-Li Guan, Zhi-Xuan Li, and Zi-Qi Zheng
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Supplemental Table S1. qRT-PCR primers used in this study Supplemental Table S2. siRNA sequence used in this study Supplemental Table S3. Primers used for shRNA plasmid construction Supplemental Table S4. Primers used for truncation variants plasmid construction Supplemental Table S5. Primers sequence used for ChIP-PCR assay Supplemental Table S6. Probe sequence of TINCR in situ hybridization (ISH) Supplemental Table S7. Clinical characteristics of nasopharyngeal carcinoma patients according to the high and low expression of TINCR Supplemental Table S8. Univariate and multivariable Cox regression analysis of TINCR expression level and survival Supplemental Table S9. The top10 proteins found by mass spectrometry analysis in the antisense-TINCR group (negative control). Supplemental Table S10. The top10 proteins found by mass spectrometry analysis in the TINCR group. The bold portion shows the proteins that overlap antisense-TINCR
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- 2023
12. Data from Long Noncoding RNA TINCR-Mediated Regulation of Acetyl-CoA Metabolism Promotes Nasopharyngeal Carcinoma Progression and Chemoresistance
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Ying Sun, Na Liu, Jun Ma, Si-Si Xu, Feng Li, Ying-Qin Li, Xiao-Jun He, FoPing Chen, Rui-Qi Liu, Guan-Qun Zhou, Lu-Lu Zhang, Jia-Wei Lv, Jia Kou, Li Lin, Yue Chen, Jun-Yan Li, Xu Liu, Jia-Li Guan, Zhi-Xuan Li, and Zi-Qi Zheng
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Frontier evidence suggests that dysregulation of long noncoding RNAs (lncRNA) is ubiquitous in all human tumors, indicating that lncRNAs might have essential roles in tumorigenesis. Therefore, an in-depth study of the roles of lncRNA in nasopharyngeal carcinoma (NPC) carcinogenesis might be helpful to provide novel therapeutic targets. Here we report that lncRNA TINCR was significantly upregulated in NPC and was associated positively with poor survival. Silencing TINCR inhibited NPC progression and cisplatin resistance. Mechanistically, TINCR bound ACLY and protected it from ubiquitin degradation to maintain total cellular acetyl-CoA levels. Accumulation of cellular acetyl-CoA promoted de novo lipid biosynthesis and histone H3K27 acetylation, which ultimately regulated the peptidyl arginine deiminase 1 (PADI1)–MAPK–MMP2/9 pathway. In addition, insulin-like growth factor 2 mRNA-binding protein 3 interacted with TINCR and slowed its decay, which partially accounted for TINCR upregulation in NPC. These findings demonstrate that TINCR acts as a crucial driver of NPC progression and chemoresistance and highlights the newly identified TINCR–ACLY–PADI1–MAPK–MMP2/9 axis as a potential therapeutic target in NPC.Significance:TINCR-mediated regulation of a PADI1–MAPK–MMP2/9 signaling pathway plays a critical role in NPC progression and chemoresistance, marking TINCR as a viable therapeutic target in this disease.
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- 2023
13. Data from Long Noncoding RNA FAM225A Promotes Nasopharyngeal Carcinoma Tumorigenesis and Metastasis by Acting as ceRNA to Sponge miR-590-3p/miR-1275 and Upregulate ITGB3
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Ying Sun, Na Liu, Jun Ma, Ying-Qin Li, Xin Wen, Jian Zhang, Jia Kou, Xiao-Jun He, FoPing Chen, Rui-Qi Liu, Xiao-Dan Huang, Jia-Wei Lv, Lu-Lu Zhang, Li Lin, Guan-Qun Zhou, Zhi-Xuan Li, and Zi-Qi Zheng
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Long noncoding RNAs (lncRNA) play important roles in the tumorigenesis and progression of cancers. However, the clinical significance of lncRNAs and their regulatory mechanisms in nasopharyngeal carcinogenesis (NPC) are largely unknown. Here, based on a microarray analysis, we identified 384 dysregulated lncRNAs, of which, FAM225A was one of the most upregulated lncRNAs in NPC. FAM225A significantly associated with poor survival in NPC. N(6)-Methyladenosine (m6A) was highly enriched within FAM225A and enhanced its RNA stability. FAM225A functioned as an oncogenic lncRNA that promoted NPC cell proliferation, migration, invasion, tumor growth, and metastasis. Mechanistically, FAM225A functioned as a competing endogenous RNA (ceRNA) for sponging miR-590-3p and miR-1275, leading to the upregulation of their target integrin β3 (ITGB3), and the activation of FAK/PI3K/Akt signaling to promote NPC cell proliferation and invasion. In summary, our study reveals a potential ceRNA regulatory pathway in which FAM225A modulates ITGB3 expression by binding to miR-590-3p and miR-1275, ultimately promoting tumorigenesis and metastasis in NPC.Significance:These findings demonstrate the clinical significance of the lncRNA FAM225A in nasopharyngeal carcinoma (NPC) and the regulatory mechanism involved in NPC development and progression, providing a novel prognostic indicator and promising therapeutic target.
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- 2023
14. Supplementary Tables S1-S5, S7-S8, S10 from Long Noncoding RNA FAM225A Promotes Nasopharyngeal Carcinoma Tumorigenesis and Metastasis by Acting as ceRNA to Sponge miR-590-3p/miR-1275 and Upregulate ITGB3
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Ying Sun, Na Liu, Jun Ma, Ying-Qin Li, Xin Wen, Jian Zhang, Jia Kou, Xiao-Jun He, FoPing Chen, Rui-Qi Liu, Xiao-Dan Huang, Jia-Wei Lv, Lu-Lu Zhang, Li Lin, Guan-Qun Zhou, Zhi-Xuan Li, and Zi-Qi Zheng
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Supplementary Table S1. qPCR primers used in this study Supplementary Table S2. The FAM225A expression level and grouping of samples based on GEO dataset (GSE12452) Supplementary Table S3. Primers used for shRNA plasmid construction Supplementary Table S4. Sequence of miRNA mimic or inhibitor used in this study Supplementary Table S5. Probe sequence of FAM225A in situ hybridization (ISH) Supplementary Table S7. Clinical characteristics of nasopharyngeal carcinoma patients according to the high and low expression of FAM225A. Supplementary Table S8. Univariate and multivariable Cox regression analysis of FAM225A expression level and survival. Supplementary Table S10. Inguinal lymph node metastasis in vivo.
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- 2023
15. Supplementary Figures from Long Noncoding RNA TINCR-Mediated Regulation of Acetyl-CoA Metabolism Promotes Nasopharyngeal Carcinoma Progression and Chemoresistance
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Ying Sun, Na Liu, Jun Ma, Si-Si Xu, Feng Li, Ying-Qin Li, Xiao-Jun He, FoPing Chen, Rui-Qi Liu, Guan-Qun Zhou, Lu-Lu Zhang, Jia-Wei Lv, Jia Kou, Li Lin, Yue Chen, Jun-Yan Li, Xu Liu, Jia-Li Guan, Zhi-Xuan Li, and Zi-Qi Zheng
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Supplemental Figure S1. TINCR is upregulated in six other cancer types. Supplemental Figure S2. GSEA analyses results of TINCR silencing. Supplemental Figure S3. Overexpression of TINCR promotes NPC cell proliferation, metastasis and cisplatin resistance in vitro. Supplemental Figure S4. Overexpression of TINCR reverses the suppressive effects of TINCR knockdown on cell proliferation, cisplatin resistance and metastasis. Supplemental Figure S5. TINCR targets ACLY and impairs its ubiquitination degradation. Supplemental Figure S6. Silencing TINCR has no effects on the expressions of KAT3A and KAT3B. Supplemental Figure S7. The ACLY-binding motif CUGKR is critical for the role of TINCR in maintaining ACLY protein stability and lipid synthesis levels. Supplemental Figure S8. Acetyl-CoA is responsible for TINCR-mediated NPC progression and chemoresistance. Supplemental Figure S9. Correlation between TINCR and PADI1 expression in 16 other cancer types from the TCGA database. Supplemental Figure S10. Silencing TINCR decreases the proteolytic activities of MMP2/9, but had no effects on H3K27ac levels at MMP2/9 promoters. Supplemental Figure S11. IGFBP3 is overexpressed in NPC
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- 2023
16. Supplementary Figures S1-S11 from Long Noncoding RNA FAM225A Promotes Nasopharyngeal Carcinoma Tumorigenesis and Metastasis by Acting as ceRNA to Sponge miR-590-3p/miR-1275 and Upregulate ITGB3
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Ying Sun, Na Liu, Jun Ma, Ying-Qin Li, Xin Wen, Jian Zhang, Jia Kou, Xiao-Jun He, FoPing Chen, Rui-Qi Liu, Xiao-Dan Huang, Jia-Wei Lv, Lu-Lu Zhang, Li Lin, Guan-Qun Zhou, Zhi-Xuan Li, and Zi-Qi Zheng
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Supplementary Figure S1. FAM225A is overexpressed in NPC and other tumor types. Supplementary Figure S2. Silencing METTL3 resulted in the decreased m6A level of total RNA. Supplementary Figure S3. FAM225A promotes NPC cell proliferation, migration and invasion in vitro. Supplementary Figure S4. FISH assay showed that FAM225A was mainly located in cytoplasmic. Supplementary Figure S5. FAM225A acts as a ceRNA for miR-590-3p and miR-1275. Supplementary Figure S6. The expression of FAM225A is negatively correlated with miR-590-3p and miR-1275 expression. Supplementary Figure S7. Silencing of miR-590-3p and miR-1275 endows NP69 and N2Tert cells with carcinogenicity in vitro. Supplementary Figure S8. miR-590-3p/miR-1275 are responsible for FAM225A-mediated proliferation, migration and invasion. Supplementary Figure S9. Correlation between FAM225A and ITGB3 expression in 12 other cancer types from the TCGA database. Supplementary Figure S10. FAM225A promotes NPC cell metastasis in vivo. Supplementary Figure S11. ITGB3 is responsible for FAM225A-meidated tumorigenesis and metastasis in vivo.
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- 2023
17. Assessing the impact of perceptions of hygiene on tourists' attitudinal loyalty to ethnic food
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Yang Zhang, Xiao-Hui Xu, Timothy J. Lee, and Zhi-Xuan Li
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Business, Management and Accounting (miscellaneous) ,Food Science - Abstract
PurposeExamining the influence of ethnic food tourists' perception of hygiene on their attitudinal loyalty formation is the purpose of this study. Specifically, How to demonstrate touristsʼ perception of ethnic food hygiene is the key question, and moreover, the study also investigates whether and how the stages of attitudinal loyalty in this study, which are perceived authenticity, positive emotion, and perceived value, are illustrated in this mechanism and are affected by tourist perceptions of hygiene?Design/methodology/approachBy engaging in the critical debate around the topic of hygiene perception, this study explores the influence of this factor on tourist's attitudinal loyalty, including the cognitive, affective and conative aspects, to ethnic food through the adoption of perceived authenticity, positive emotion and perceived value. A survey was conducted at the Xijiang Miao Village, a very popular ethnic tourism destination in China.FindingsThis study reveals that ethnic food tourists' perceptions of hygiene have five dimensions. One of these plays a direct predictor role in developing effective conative loyalty (perceived value). Tourists' perceptions of authenticity and positive emotion representing cognitive and affective loyalty are confirmed in their direct effect on conative loyalty as well. The five dimensions of perceptions of hygiene identified have varying degrees of influence on the three stages of attitudinal loyalty.Originality/valueThe unique contribution of this study lies in two points: (1) it has discovered the way that tourists' perceptions of the hygienic preparation of ethnic food in the ethnic destination is constructed, and (2) it investigated the relationship between tourists' perceptions of hygiene and the three stages of attitudinal loyalty.
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- 2022
18. Spatial maps of hepatocellular carcinoma transcriptomes reveal spatial expression patterns in tumor immune microenvironment
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Yue-fan Wang, Sheng-xian Yuan, Hui Jiang, Zhi-xuan Li, Hao-zan Yin, Jian Tan, Zhi-hui Dai, Chun-mei Ge, Shu-han Sun, and Fu Yang
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Carcinoma, Hepatocellular ,Liver Neoplasms ,Biomarkers, Tumor ,Tumor Microenvironment ,Humans ,Medicine (miscellaneous) ,Transcriptome ,Pharmacology, Toxicology and Pharmaceutics (miscellaneous) - Published
- 2022
19. Redefining Left Bundle Branch Block from High-density Electroanatomical Mapping
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Jun-Hua Zou, Bao-Tong Hua, Xiao-Xia Shao, Chao Wang, Hao Li, Ya-Nan Lu, Xin Tian, Zhi-Xuan Li, Li-Jin Pu, and Jing Wang
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BackgroundThe current ECG criteria for diagnosing left bundle branch block (LBBB) still cannot fully differentiate between true and false blocks. The absence or presence of an LBBB is key in improving the response rate of clinical cardiac resynchronization therapy (CRT).MethodsWe hypothesized that the notch width of the QRS complex in the lateral leads (I, avL, V5, V6) on the LBBB-like ECG could further confirm the diagnosis of true complete left bundle branch block (t-LBBB). We performed high-density, three-dimensional electroanatomical mapping in the cardiac chambers of 37 patients scheduled to undergo CRT and whose preoperative electrocardiograms met the ACC/AHA/HRS guidelines for the diagnosis of complete LBBB. If the left bundle branch potential could be mapped from the bottom of the heart to the apex on the left ventricular septum, it was defined as a false complete left bundle branch block (f-LBBB). Otherwise, it was categorized as a t-LBBB. We compared the clinical characteristics, the real-time correspondence between the spread of ventricular electrical excitation and the QRS wave, the QRS notch width of the lateral leads (I, avL, V5, V6), and the notch width/left ventricular end-diastolic diameter (Nw/LVd) ratio between the two groups. Through ROC correlation analysis of Nw/LVd and t-LBBB, the sensitivity, specificity, and cut-off value of Nw/LVd diagnostic authenticity were obtained.ResultsTwenty-five patients were recruited to the t-LBBB group, and 12 to the f-LBBB group. In the t-LBBB group, the first peak of the QRS notch corresponded to the depolarization of the right ventricle and septum, the trough corresponded to the depolarization of the left ventricle across the left ventricle, and the second peak corresponded to the depolarization of the left ventricular free wall. In the f-LBBB group, the first peak corresponded to the depolarization of the right ventricle and most of the left ventricle, the second peak corresponded to the depolarization of the latest, locally-activated myocardium of the left ventricle, and the trough was caused by the off-peak delayed activation of the left ventricle. The QRS notch width (45.2 ± 12.3 ms vs. 52.5 ± 9.2 ms,PPConculuionUsing the current diagnostic criteria of LBBB, increasing the Nw/LVd value can diagnose LBBB more effectively.
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- 2023
20. Sustainable Operation of Fine-Dining Restaurants: Antecedents and Consequences of Customers’ Self-Image Congruity at a Cantonese Michelin-Starred Restaurant Based on the Value-Attitude-Behavior Model
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Si-Fan Liu, Zhi-Xuan Li, and Yang Zhang
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self-congruity theory ,willingness to pay a price premium ,Renewable Energy, Sustainability and the Environment ,Geography, Planning and Development ,value-attitude-behavior framework ,Building and Construction ,perceived quality ,Management, Monitoring, Policy and Law ,fine-dining restaurant ,generational theory - Abstract
With the current rapid economic development, restaurant practitioners need to pay attention to the issue of how fine-dining restaurants can achieve sustainable operations in the presence of fierce competition. Fine-dining restaurants have gradually become a reflection of consumers’ self-image; therefore, this study combines the VAB framework, self-congruity theory, and generational theory to investigate the relationships among perceived quality, customers’ self-image congruity, and their willingness to pay a price premium (WTP-PP). Current research uses generation as a moderator to explore the intergenerational differences between Gen X and Gen Y. We adopted Smart-PLS to conduct SEM and MGA. The results of this study showed that the quality of the atmosphere and food induced actual, ideal, and ideal social self-image congruity, while the quality of the service could not only induce the above three aspects of self-consistency but also induce social self-image congruity and have a significant positive impact on WTP-PP. Meanwhile, WTP-PP was also significantly affected by actual self-image congruity and ideal self-image congruity. Furthermore, Gen Yers cared more about the atmosphere quality than Gen X. Contrarily, Gen Xers valued food quality more than Gen Y.
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- 2023
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21. VIRMA promotes nasopharyngeal carcinoma, tumorigenesis, and metastasis by upregulation of E2F7 in an m6A-dependent manner
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Zi-Qi Zheng, Zhuo-Hui Huang, Ye-Lin Liang, Wei-Hong Zheng, Cheng Xu, Zhi-Xuan Li, Na Liu, Pan-Yang Yang, Ying-Qin Li, Jun Ma, Ying Sun, Ling-Long Tang, and Denghui Wei
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Cell Biology ,Molecular Biology ,Biochemistry - Abstract
The N6-methyladenosine (m6A) modification possesses new and essential roles in tumor initiation and progression by regulating mRNA biology. However, the role of aberrant m6A regulation in nasopharyngeal carcinoma (NPC) remains unclear. Here, through comprehensive analyses of NPC cohorts from the GEO database (GES12452, GSE12349, and GSE61218) and our internal cohort, we identified that VIRMA, an m6A writer, is significantly upregulated in NPC and plays an essential role in tumorigenesis and metastasis of NPC, both in vitro and in vivo. High VIRMA expression served as a prognostic biomarker and was associated with poor outcomes in patients with NPC. Mechanistically, VIRMA mediated the m6A methylation of E2F7 3′-UTR, then IGF2BP2 bound and maintained the stability of E2F7 mRNA. An integrative high-throughput sequencing approach revealed that E2F7 drives a unique transcriptome distinct from the classical E2F family in NPC, which functioned as an oncogenic transcriptional activator. E2F7 cooperated with CBFB-recruited RUNX1 in a non-canonical manner to transactivate ITGA2, ITGA5, and NTRK1, strengthening Akt signaling-induced tumor-promoting effect. These results together demonstrate the role of VIRMA as an m6A writer that modulates E2F7 expression to control the transcription program of NPC, unveiling an m6A modulator that is essential for NPC tumorigenesis and metastasis.
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- 2023
22. m6A-enriched lncRNA LINC00839 promotes tumor progression by enhancing TAF15-mediated transcription of amine oxidase AOC1 in nasopharyngeal carcinoma
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Wei-Hong Zheng, Zhi-Qing Long, Zi-Qi Zheng, Lu-Lu Zhang, Ye-Lin Liang, Zhi-Xuan Li, Jia-Wei Lv, Jia Kou, Xiao-Hong Hong, Shi-Wei He, Rui Xu, Guan-Qun Zhou, Na Liu, Jun Ma, Ying Sun, Li Lin, and Denghui Wei
- Subjects
Cell Biology ,Molecular Biology ,Biochemistry - Published
- 2023
23. Single-cell transcriptome profiling of the immune space-time landscape reveals dendritic cell regulatory program in polymicrobial sepsis
- Author
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Ren-qi Yao, Zhi-xuan Li, Li-xue Wang, Yu-xuan Li, Li-yu Zheng, Ning Dong, Yao Wu, Zhao-fan Xia, Timothy R. Billiar, Chao Ren, and Yong-ming Yao
- Subjects
Mice ,Gene Expression Profiling ,Sepsis ,Medicine (miscellaneous) ,Animals ,COVID-19 ,Humans ,Dendritic Cells ,Pharmacology, Toxicology and Pharmaceutics (miscellaneous) ,T-Lymphocytes, Regulatory - Published
- 2022
24. WTAP-mediated m(6)A modification of lncRNA DIAPH1-AS1 enhances its stability to facilitate nasopharyngeal carcinoma growth and metastasis
- Author
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Zhi-Xuan Li, Zi-Qi Zheng, Pan-Yang Yang, Li Lin, Guan-Qun Zhou, Jia-Wei Lv, Lu-Lu Zhang, FoPing Chen, Ying-Qin Li, Chen-Fei Wu, Feng Li, Jun Ma, Na Liu, and Ying Sun
- Subjects
Adenosine ,Nasopharyngeal Carcinoma ,Carcinogenesis ,Formins ,Membrane Proteins ,RNA-Binding Proteins ,Cell Cycle Proteins ,Nasopharyngeal Neoplasms ,Cell Biology ,LIM Domain Proteins ,Article ,Epigenesis, Genetic ,Cytoskeletal Proteins ,Cell Line, Tumor ,Humans ,RNA, Long Noncoding ,RNA Splicing Factors ,Neoplasm Metastasis ,Molecular Biology ,Adaptor Proteins, Signal Transducing ,Cell Proliferation - Abstract
As the most predominant RNA epigenetic regulation in eukaryotic cells, N(6)-methyladenosine (m(6)A) plays a critical role in human tumorigenesis and cancer progression. However, the biological function and molecular mechanism of m(6)A regulation in naso-pharyngeal carcinoma (NPC) remain elusive. Here, we showed that Wilms’ tumor 1-associating protein (WTAP) expression was apparently upregulated in NPC, and increased WTAP was associated with poor prognosis. WTAP upregulated in NPC was fine-tuned by KAT3A-mediated H3K27 acetylation. Functionally, WTAP was required for the growth and metastasis of NPC. Mechanistically, lncRNA DIAPH1-AS1 was identified as a bona fide m(6)A target of WTAP. WTAP-mediated m(6)A modification of DIAPH1-AS1 enhanced its stability relying on the m(6)A reader IGF2BP2-dependent pathway. Furthermore, DIAPH1-AS1 acted as a molecular adaptor that promoted MTDH-LASP1 complex formation and upregulated LASP1 expression, ultimately facilitating NPC growth and metastasis. Thus, WTAP-mediated DIAPH1-AS1 m(6)A methylation is required for NPC tumorigenesis and metastasis.
- Published
- 2022
25. Effect of downstream processing on the structure and rheological properties of xanthan gum generated by fermentation of Melaleuca alternifolia residue hydrolysate
- Author
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Zhi-Xuan Li, Jia-Yu Chen, Yi Wu, Zhong-Ying Huang, Shu-Ting Wu, Yun Chen, Jing Gao, Yong Hu, and Chao Huang
- Subjects
General Chemical Engineering ,General Chemistry ,Food Science - Published
- 2022
26. Evaluation of Measurement Uncertainty from Pour Plate Method in Bacterial Enumeration in Water
- Author
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Zhi Xuan Li, Wei Ma, Yi Jun Kong, Sin Neng Chio, Chang Li Zhang, Chi Tou Lei, and She Xia Zhan
- Subjects
General Medicine - Published
- 2022
27. Hypoxia triggers the outbreak of infectious spleen and kidney necrosis virus disease through viral hypoxia response elements
- Author
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Jian He, Yang Yu, Zhi-Min Li, Zhi-Xuan Liu, Shao-Ping Weng, Chang-Jun Guo, and Jian-Guo He
- Subjects
Iridovirus ,ISKNV ,hypoxia ,hypoxia response elements ,HIF pathway ,Infectious and parasitic diseases ,RC109-216 - Abstract
Hypoxia frequently occurs in aquatic environments, especially in aquaculture areas. However, research on the relationship between hypoxic aquatic environments with viral diseases outbreak is limited, and its underlying mechanisms remain elusive. Herein, we demonstrated that hypoxia directly triggers the outbreak of infectious spleen and kidney necrosis virus (ISKNV) disease. Hypoxia or activated hypoxia-inducible factor (HIF) pathway could remarkably increase the levels of viral genomic DNA, titers, and gene expression, indicating that ISKNV can response to hypoxia and HIF pathway. To reveal the mechanism of ISKNV respond to HIF pathway, we identified the viral hypoxia response elements (HREs) in ISKNV genome. Fifteen viral HREs were identified, and four related viral genes responded to the HIF pathway, in which the hre-orf077r promoter remarkably responded to the HIF pathway. The level of orf077r mRNA dramatically increased after the infected cells were treated with dimethyloxalylglycine (DMOG) or the infected cells/fish subjected to hypoxic conditions, and overexpressed orf077r could remarkably increase the ISKNV replication. These finding shows that hypoxic aquatic environments induce the expression of viral genes through the viral HREs to promote ISKNV replication, indicating that viral HREs might be important biomarkers for the evaluation of the sensitivity of aquatic animal viral response to hypoxia stress. Furthermore, the frequencies of viral HREs in 43 species aquatic viral genomes from 16 families were predicted and the results indicate that some aquatic animal viruses, such as Picornavirdea, Dicistronviridae, and Herpesviridae, may have a high risk to outbreak when the aquatic environment encounters hypoxic stress.
- Published
- 2022
- Full Text
- View/download PDF
28. Comparative Genomics Analysis and Outer Membrane Vesicle-Mediated Horizontal Antibiotic-Resistance Gene Transfer in Avibacterium paragallinarum
- Author
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Jie Xu, Chen Mei, Yan Zhi, Zhi-xuan Liang, Xue Zhang, and Hong-jun Wang
- Subjects
A. paragallinarum ,outer membrane vesicles ,whole genome ,antibiotic resistance gene ,horizontal gene transfer ,Microbiology ,QR1-502 - Abstract
ABSTRACT Avibacterium paragallinarum is the etiological agent of infectious coryza, an acute respiratory disease of chickens that is globally distributed and causes serious economic losses for chicken production. A. paragallinarum is a Gram-negative bacterium that releases outer membrane vesicles (OMVs). In this study, a comparative genomic analysis of A. paragallinarum isolate P4chr1 and its OMVs was carried out, and the ability to transfer antibiotic resistance genes (ARGs) via the OMVs was studied. Sequencing and data analyses demonstrated that the genomic size of A. paragallinarum P4chr1 was approximately 2.77 Mb with a 25 kb tolerance island that covered six types of antibiotics and 11 ARGs. The genomic size of its OMVs was approximately 2.69 Mb, covering 97% of the genomic length and almost all the gene sequences of P4chr1. Purified and DNase-treated A. paragallinarum P4chr1 OMVs were cocultured with the antibiotic-sensitive A. paragallinarum Modesto strain on an antibiotic (chloramphenicol, erythromycin, tetracycline, or streptomycin)-containing plate, and the corresponding ARGs were detected in the colonies grown on the plates. However, using an antimicrobial susceptibility test, we found that ARGs delivered by OMVs were not persistent but only appeared transiently on the antibiotic-containing plates. Antibiotic resistance and ARGs were lost by the second bacterial passage. IMPORTANCE The functions and roles of OMVs on ARG and virulent gene transfer and dissemination have been reported in numerous Gram-negative bacteria. However, the role of OMVs in mediating antibiotic resistance in A. paragallinarum has not been reported. This study is the first report to compare the genomic characteristics of OMVs with its parent A. paragallinarum strain and to study A. paragallinarum ARG transfer via OMVs. This work has provided useful data for further studies focusing on nonplasmid ARG transfer mediated by A. paragallinarum OMVs.
- Published
- 2022
- Full Text
- View/download PDF
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