12 results on '"Zhongyu Qin"'
Search Results
2. Inhibiting collagen I production and tumor cell colonization in the lung via miR-29a-3p loading of exosome-/liposome-based nanovesicles
- Author
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Yan Yan, Cancan Du, Xixi Duan, Xiaohan Yao, Jiajia Wan, Ziming Jiang, Zhongyu Qin, Wenqing Li, Longze Pan, Zhuoyu Gu, Fazhan Wang, Ming Wang, and Zhihai Qin
- Subjects
Lung metastasis ,miR-29a-3p ,Collagen I ,Liposomal nanovesicle ,Exosomes ,Fibroblasts ,Therapeutics. Pharmacology ,RM1-950 - Abstract
The lung is one of the most common sites for cancer metastasis. Collagens in the lung provide a permissive microenvironment that supports the colonization and outgrowth of disseminated tumor cells. Therefore, down-regulating the production of collagens may contribute to the inhibition of lung metastasis. It has been suggested that miR-29 exhibits effective anti-fibrotic activity by negatively regulating the expression of collagens. Indeed, our clinical lung tumor data shows that miR-29a-3p expression negatively correlates with collagen I expression in lung tumors and positively correlates with patients’ outcomes. However, suitable carriers need to be selected to deliver this therapeutic miRNA to the lungs. In this study, we found that the chemotherapy drug cisplatin facilitated miR-29a-3p accumulation in the exosomes of lung tumor cells, and this type of exosomes exhibited a specific lung-targeting effect and promising collagen down-regulation. To scale up the preparation and simplify the delivery system, we designed a lung-targeting liposomal nanovesicle (by adjusting the molar ratio of DOTAP/cholesterol–miRNAs to 4:1) to carry miR-29a-3p and mimic the exosomes. This liposomal nanovesicle delivery system significantly down-regulated collagen I secretion by lung fibroblasts in vivo, thus alleviating the establishment of a pro-metastatic environment for circulating lung tumor cells.
- Published
- 2022
- Full Text
- View/download PDF
3. Quantitative Assessment Model of IT Operation and Maintenance Operation Risk Based on the Digital Twin Model
- Author
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Zhongyu Qin, Shaoyu Liang, and Qin Liu
- Subjects
Article Subject ,Software ,Computer Science Applications - Abstract
In recent years, with the popularization of computer and information network technology, the core business of more and more industries has basically realized informatization office. Although the informatization office has brought a lot of convenience to people, the increasingly complex informatization infrastructure equipment has also buried many hidden dangers for people. More and more security incidents are caused by unfamiliarity with these infrastructures. How to use the information infrastructure correctly has become a problem considered by more and more enterprise information security departments, and the position of IT operation and maintenance is born to solve this hidden danger. The IT (Internet Technology) operation and maintenance personnel of each enterprise formulate a set of operational risk quantitative assessment models for the enterprise based on the internal information infrastructure equipment of the enterprise so that the enterprise staff can use these infrastructure equipment efficiently and safely. This paper focused on the quantitative assessment model of IT operation and maintenance operation risk constructed by the digital twin model. The quantitative assessment model of IT operation and maintenance operation risk constructed by the digital twin model was compared with the quantitative assessment model of IT operation and maintenance operation risk constructed by other traditional models. The comparison results showed that the output results of the evaluation model constructed by the digital twin model were closer to the actual results, and the accuracy rate was 35.9% higher than that of the previous operational risk assessment model.
- Published
- 2022
4. Tumor-derived exosomes drive pre-metastatic niche formation in lung via modulating CCL1+ fibroblast and CCR8+ Treg cell interactions
- Author
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Ming Wang, Zhongyu Qin, Jiajia Wan, Yan Yan, Xixi Duan, Xiaohan Yao, Ziming Jiang, Wenqing Li, and Zhihai Qin
- Subjects
Cancer Research ,Oncology ,Immunology ,Immunology and Allergy - Published
- 2022
5. Inhibiting collagen I production and tumor cell colonization in the lung via miR-29a-3p loading of exosome-/liposome-based nanovesicles
- Author
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Ziming Jiang, Zhongyu Qin, Yan Yan, Xixi Duan, Ming Wang, Zhihai Qin, Longze Pan, Fazhan Wang, Cancan Du, Xiaohan Yao, Wenqing Li, Jiajia Wan, and Zhuoyu Gu
- Subjects
Cisplatin ,Liposome ,Lung ,Chemistry ,respiratory system ,Exosome ,Microvesicles ,respiratory tract diseases ,medicine.anatomical_structure ,In vivo ,microRNA ,medicine ,Cancer research ,Secretion ,General Pharmacology, Toxicology and Pharmaceutics ,medicine.drug - Abstract
The lung is one of the most common sites for cancer metastasis. Collagens in the lung provide a permissive microenvironment that supports the colonization and outgrowth of disseminated tumor cells. Therefore, down-regulating the production of collagens may contribute to the inhibition of lung metastasis. It has been suggested that miR-29 exhibits effective anti-fibrotic activity by negatively regulating the expression of collagens. Indeed, our clinical lung tumor data shows that miR-29a-3p expression negatively correlates with collagen I expression in lung tumors and positively correlates with patients’ outcomes. However, suitable carriers need to be selected to deliver this therapeutic miRNA to the lungs. In this study, we found that the chemotherapy drug cisplatin facilitated miR-29a-3p accumulation in the exosomes of lung tumor cells, and this type of exosomes exhibited a specific lung-targeting effect and promising collagen down-regulation. To scale up the preparation and simplify the delivery system, we designed a lung-targeting liposomal nanovesicle (by adjusting the molar ratio of DOTAP/cholesterol–miRNAs to 4:1) to carry miR-29a-3p and mimic the exosomes. This liposomal nanovesicle delivery system significantly down-regulated collagen I secretion by lung fibroblasts in vivo, thus alleviating the establishment of a pro-metastatic environment for circulating lung tumor cells.
- Published
- 2022
6. Genome-wide analysis and characterization of GRAS family in switchgrass
- Author
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Pengcheng Feng, Zhongyu Qin, Yajing Sun, Guixia Li, and Xiaoqin Wang
- Subjects
Bioengineering ,Biology ,Genes, Plant ,Panicum ,Applied Microbiology and Biotechnology ,Genome ,Gene Expression Regulation, Plant ,panicum virgatum ,Gene duplication ,Gene family ,Gene ,Conserved Sequence ,Plant Proteins ,Genetics ,Phylogenetic tree ,gras ,Intron ,Genomics ,General Medicine ,gibberellin ,Gibberellins ,gene family ,Transcriptome ,Transcription Factor Gene ,TP248.13-248.65 ,Function (biology) ,Transcription Factors ,Research Article ,Research Paper ,genome-wide analysis ,Biotechnology - Abstract
Panicum virgatum, a model plant of cellulosic ethanol conversion, not only has high large biomass and strong adaptability to soil, but also grows well in marginal soil and has the advantage of improving saline-alkali soil. GRAS transcription factor gene family play important roles in individual environment adaption, and these vital functions has been proved in several plants, however, the research of GRAS in the development of switchgrass (Panicum virgatum) were limited. A comprehensive study was investigated to explore the relationship between GRAS gene family and resistance. According to the phylogenetic analysis, a total of 144 GRAS genes were identified and renamed which were classified into eight subfamilies. Chromosome distribution, tandem and segmental repeats analysis indicated that gene duplication events contributed a lot to the expansion of GRAS genes in the switchgrass genome. Sixty-six GRAS genes in switchgrass were identified as having orthologous genes with rice through gene duplication analysis. Most of these GRAS genes contained zero or one intron, and closely related genes in evolution shared similar motif composition. Interaction networks were analyzed including DELLA and ten interaction proteins that were primarily involved in gibberellin acid mediated signaling. Notably, online analysis indicated that the promoter regions of the identified PvGRAS genes contained many cis-elements including light responsive elements, suggesting that PvGRAS might involve in light signal cross-talking. This work provides key insights into resistance and bioavailability in switchgrass and would be helpful to further study the function of GRAS and GRAS-mediated signal transduction pathways.
- Published
- 2021
7. Big data analysis for detection of web brute-force attack
- Author
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Wenjin ZHANG, Zhongyu QIN, Zhao FENG, Jiaqi LIU, Wei LIU, and Xinan TANG
- Subjects
Computer Science (miscellaneous) ,Engineering (miscellaneous) - Published
- 2020
8. Inhibiting collagen I production and tumor cell colonization in the lung
- Author
-
Yan, Yan, Cancan, Du, Xixi, Duan, Xiaohan, Yao, Jiajia, Wan, Ziming, Jiang, Zhongyu, Qin, Wenqing, Li, Longze, Pan, Zhuoyu, Gu, Fazhan, Wang, Ming, Wang, and Zhihai, Qin
- Abstract
The lung is one of the most common sites for cancer metastasis. Collagens in the lung provide a permissive microenvironment that supports the colonization and outgrowth of disseminated tumor cells. Therefore, down-regulating the production of collagens may contribute to the inhibition of lung metastasis. It has been suggested that miR-29 exhibits effective anti-fibrotic activity by negatively regulating the expression of collagens. Indeed, our clinical lung tumor data shows that miR-29a-3p expression negatively correlates with collagen I expression in lung tumors and positively correlates with patients' outcomes. However, suitable carriers need to be selected to deliver this therapeutic miRNA to the lungs. In this study, we found that the chemotherapy drug cisplatin facilitated miR-29a-3p accumulation in the exosomes of lung tumor cells, and this type of exosomes exhibited a specific lung-targeting effect and promising collagen down-regulation. To scale up the preparation and simplify the delivery system, we designed a lung-targeting liposomal nanovesicle (by adjusting the molar ratio of DOTAP/cholesterol-miRNAs to 4:1) to carry miR-29a-3p and mimic the exosomes. This liposomal nanovesicle delivery system significantly down-regulated collagen I secretion by lung fibroblasts
- Published
- 2021
9. Nuclear receptor HR3 controls locust molt by regulating chitin synthesis and degradation genes of Locusta migratoria
- Author
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Sheng Li, Jianzhen Zhang, Xiaoming Zhao, Weimin Liu, Bernard Moussian, Zhongyu Qin, Xiaojian Liu, and Enbo Ma
- Subjects
Nymph ,0106 biological sciences ,0301 basic medicine ,Locusta migratoria ,Receptors, Cytoplasmic and Nuclear ,Chitin ,Molting ,Biology ,01 natural sciences ,Biochemistry ,03 medical and health sciences ,chemistry.chemical_compound ,Gene expression ,Animals ,Amino Acid Sequence ,Molecular Biology ,Phylogeny ,Chitinases ,fungi ,Gene Expression Regulation, Developmental ,Migratory locust ,biology.organism_classification ,Molecular biology ,010602 entomology ,Ecdysterone ,030104 developmental biology ,chemistry ,Insect Science ,Ecdysis ,Chitinase ,biology.protein ,Insect Proteins ,Instar ,Sequence Alignment ,Moulting ,Locust - Abstract
During growth and development of insects, the steroid hormone 20-Hydroxyecdysone (20E) regulates the molting process through activation of a series of genes including E74, E75 and HR3 by the 20E receptor EcR. Here, we analyzed the function of LmHR3 in the migratory locust Locusta migratoria. By sequence comparison, we first identified and characterized the putative nuclear receptor protein (LmHR3) based on L. migratoria transcriptome data. The full length cDNA is 2272 bp long encoding a protein of 455 amino acids that contains a DNA binding domain (zinc finger) and a ligand binding domain. Phylogenetic analyses showed that LmHR3 has a high homology with the ortholog from Blattaria. RT-qPCR results revealed that LmHR3 has a low level expression in the early days of 5th instar nymphs, and then increases and peaks at day 6, followed by a decrease to low levels before ecdysis. The LmHR3, hence, coincides with the profile of circulating 20E levels. Indeed, we show that transcription of LmHR3 is induced by 20E in vivo, and significantly suppressed by successfully knocking down expression of LmEcR. After injection of dsRNA for LmHR3 (dsLmHR3) at day 2 of earlier instar nymphs (3rd and 4th instar) and final instar nymphs (5th instar), none of the nymphs were able to molt normally, and eventually died. Chitin staining and ultra-structural analysis showed that both the synthesis of the new cuticle and the degradation of the old cuticle were blocked in the dsLmHR3 treated nymphs. Especially, chitin synthesis genes (LmUAP1 and LmCHS1) and chitinase genes (LmCHT5 and LmCHT10) were significantly down-regulated in the dsLmHR3 treatment group. Together, our results suggest that LmHR3 is involved in the control of chitin synthesis and degradation during L. migratoria molting.
- Published
- 2018
10. Nuclear receptor <scp>HR</scp> 39 is required for locust molting by regulating the chitinase and carboxypeptidase genes
- Author
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Qing Yang, Enbo Ma, Jing Zhang, Jia Pan, Xiaoming Zhao, Zhongyu Qin, Jianzhen Zhang, and Yang Yang
- Subjects
0106 biological sciences ,0301 basic medicine ,biology ,Apolysis ,biology.organism_classification ,01 natural sciences ,Carboxypeptidase ,Cell biology ,010602 entomology ,03 medical and health sciences ,030104 developmental biology ,Nuclear receptor ,Insect Science ,Ecdysis ,Genetics ,Carboxypeptidase A ,biology.protein ,Ecdysone receptor ,Molecular Biology ,Moulting ,Locust - Abstract
The nuclear receptor-mediated 20-hydroxyecdysone (20E) signalling pathway plays crucial roles in insects by initiating and regulating moulting and metamorphosis. In the present study, we identified and characterized a cDNA encoding a putative nuclear receptor protein (Locusta migratoria hormone receptor 39, LmHR39) based on L. migratoria transcriptomics data. Reverse-transcription quantitative PCR (RT-qPCR) revealed that LmHR39 shows low-level expression in the early days of fifth-instar nymphs, and peak expression occurs on day 5, which is followed by a decrease before ecdysis. LmHR39 transcription could be induced by 20E in vivo and was significantly suppressed by knocking down the expression of the L. migratoria ecdysone receptor gene and early-late gene LmHR3. After RNA interference of LmHR39 with double-stranded RNA (dsRNA), 85% of the insects showed abnormal morphology, with curly wings after moulting and delayed eclosion time. Haematoxylin and eosin staining indicated that apolysis of the integument and wing pad cuticle in the dsLmHR39-treated insects was delayed compared to that in the dsRNA for green fluorescent protein-injected control. Furthermore, RNA-sequencing and RT-qPCR analysis showed the expression level of carboxypeptidase genes (Carboxypeptidase A (CPA) and Carboxypeptidase M (CPM)) and chitin degrading genes (LmChitinase5 (LmCHT5) and LmChitinase10 (LmCHT10)) dramatically declined in the dsLmHR39-treated insects, implying that the LmHR39-mediated 20E signalling pathway is involved in the regulation of carboxypeptidase genes (CPA and CPM) and chitinase genes (LmCHT5 and LmCHT10), and participated in apolysis of the integument and wing pads during locust moulting.
- Published
- 2019
11. Identification and expression of cuticular protein genes based on Locusta migratoria transcriptome
- Author
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Sheng Li, Jianzhen Zhang, Xin Gou, Daqi Li, Yan Wang, Xiaoming Zhao, Zhongyu Qin, and Enbo Ma
- Subjects
0106 biological sciences ,0301 basic medicine ,Sequence analysis ,Cuticle ,Locusta migratoria ,Biology ,01 natural sciences ,Molting cycle ,Article ,Transcriptome ,03 medical and health sciences ,Gene expression ,Animals ,Wings, Animal ,Gene ,Illumina dye sequencing ,Phylogeny ,Life Cycle Stages ,Multidisciplinary ,Integumentary system ,High-Throughput Nucleotide Sequencing ,Sequence Analysis, DNA ,Thorax ,Cell biology ,010602 entomology ,030104 developmental biology ,Gene Expression Regulation ,Insect Proteins ,Integumentary System - Abstract
Many types of cuticular proteins are found in a single insect species, and their number and features are very diversified among insects. The cuticle matrix consists of many different proteins that confer the physical properties of the exoskeleton. However, the number and properties of cuticle proteins in Locusta migratoria remain unclear. In the present study, Illumina sequencing and de novo assembly were combined to characterize the transcriptome of L. migratoria. Eighty-one cuticular protein genes were identified and divided into five groups: the CPR family (51), Tweedle (2), CPF/CPFLs (9), CPAP family (9), and other genes (10). Based on the expression patterns in different tissues and stages, most of the genes as a test were distributed in the integument, pronotum and wings, and expressed in selected stages with different patterns. The results showed no obvious correlation between the expression patterns and the conservative motifs. Additionally, each cluster displayed a different expression pattern that may possess a different function in the cuticle. Furthermore, the complexity of the large variety of genes displayed differential expression during the molting cycle may be associated with cuticle formation and may provide insights into the gene networks related to cuticle formation.
- Published
- 2017
- Full Text
- View/download PDF
12. Schisandrin B inhibits LPS-induced inflammatory response in human umbilical vein endothelial cells by activating Nrf2
- Author
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Yuanbiao Meng, Zhongyu Qin, Mei Shi, Lin Qiuning, Si-en Guo, Zhong Qin, and Qin Xiao
- Subjects
0301 basic medicine ,Lipopolysaccharides ,Schisandra chinensis ,NF-E2-Related Factor 2 ,medicine.medical_treatment ,Immunology ,Anti-Inflammatory Agents ,Vascular Cell Adhesion Molecule-1 ,Pharmacology ,Umbilical vein ,Lignans ,03 medical and health sciences ,chemistry.chemical_compound ,Cyclooctanes ,0302 clinical medicine ,Western blot ,medicine ,Human Umbilical Vein Endothelial Cells ,Immunology and Allergy ,Humans ,Polycyclic Compounds ,Interleukin 8 ,RNA, Small Interfering ,Schisandra ,Inflammation ,biology ,medicine.diagnostic_test ,Chemistry ,Tumor Necrosis Factor-alpha ,Interleukin-8 ,NF-kappa B ,NF-κB ,Transfection ,biology.organism_classification ,Intercellular Adhesion Molecule-1 ,030104 developmental biology ,Cytokine ,Cell culture ,030220 oncology & carcinogenesis ,Endothelium, Vascular ,Heme Oxygenase-1 ,Signal Transduction - Abstract
Schisandrin B (SchB), an active ingredient extracted from Schisandra chinensis (Turcz.) Baill, has been known to have anti-oxidant and anti-inflammatory activities. In this study, we investigated the anti-inflammatory effects and mechanism of SchB in LPS-stimulated human umbilical vein endothelial cells (HUVECs). The effects of SchB on VCAM-1, ICAM-1, NF-κB and Nrf2 expression were detected by western blot analysis. The effects of SchB on TNF-α and IL-8 production were detected by ELISA. The results showed that SchB strongly suppressed the production of TNF-α and IL-8 in HUVECs stimulated with LPS. SchB also inhibited LPS-induced VCAM-1 and ICAM-1 expression. Furthermore, SchB blocked the activation of NF-κB induced by LPS. In addition, SchB increased the expression of Nrf2 and HO-1 in a concentration-dependent manner. And the inhibition of TNF-α and IL-8 production by SchB was blocked by transfection with Nrf2 siRNA. Our findings showed that SchB inhibited LPS-induced inflammation in HUVECs by activating Nrf2 signaling pathway.
- Published
- 2017
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