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Involvement of CD4^＋CD25^＋ regulatory T cells in the pathogenesis of polycythaemia vera

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Chinese Medical Journal 2008年第18期 1781-1786页

作者： ZHAO Wen-bo LI Ying LIU xin ZHANG ling-yan wang xin Department of Hematology Shandong Provincial Hospital Affiliated to Shandong University Jinan Shandong 250021 China

Background Regulatory T cells （mreg） have been shown to play an important role in the regulation of hematopoietic activity. However, there is no information about the effect of Treg cells in the pathogenesis of polycythaemia vera （PV）. Methods In this study, we investigated the percentage and function of Treg cells in the peripheral blood of 21 PV patients and 25 healthy donors, mreg cells were identified and characterized as CD4^＋CD25^＋FOXP3^＋ by flow cytometry. The suppressive activity of CD4^＋CD25^＋ Treg cells was assessed by the proliferation and cytokine secretion of the co-cultured CD4^＋CD25^- fractions. Results The results showed that the percentage of Treg cells in the peripheral blood of PV patients significantly increased compared to healthy controls （（10.93±4.02）% vs （5.86±1.99）%, P 〈0.05）. Moreover, the mRNA and protein expression of FOXP3 was higher in CD4^＋CD25^＋ Treg cells. Coordinately, when co-cultured with the activated CD4^＋CD25^- cells, the CD4^＋CD25^＋ Treg cells showed enhanced suppressive function in PV. Yet, the underlying mechanism for the increased frequency and function of CD4^＋CD25^＋ Treg cells is still to be clarified. Conclusion Treg cells expansion might account for the abnormal T cell immunity in PV patients and thus contribute to the pathogenesis of PV.

关键词： polycythaemia vera regulatory T cells pathogenesis

miR-211 promotes lens epithelial cells apoptosis by targeting silent mating-type information regulation 2 homolog 1 in age-related cataracts

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International Journal of Ophthalmology(English edition) 2018年第2期11卷 201-207页

作者： Bo Lu Ian T.Christensen Li-Wei Ma xin-ling wang ling-Feng Jiang Chun-Xia wang Li Feng Jin-Song Zhang Qi-Chang Yan Department of Ophthalmology the Fourth Affiliated Hospital of China Medical UniversityKey Laboratory of Lens Research of Liaoning ProvinceEye Hospital of China Medical UniversityShenyang 110005Liaoning ProvinceChina University of Utah School of Medicine Salt Lake CityUtah 84132USA

AIM： To detect the expression of miR-211 in age-related cataract tissue, explore the effects of miR-211 on lens epithelial cell proliferation and apoptosis, and identify its target ***： This study used real-time quantitative polymerase chain reaction（RT-q PCR） to measure the expression of miR-211 and its predicted target gene [silent matingtype information regulation 2 homolog 1（SIRT1）] in 46 anterior lens capsules collected from age-related cataract patients. Human lens epithelial cell line（SRA01/04） cells were transfected with either miR-211 mimics, mimic controls, miR-211 inhibitors or inhibitor controls, 72 h after transfection, miR NA and protein expression of SIRT1 were measured using RT-qP CR and Western blotting; then cells were exposed to 200 μmol/L H2O2 for 1h, whereupon cell viability was measured by MTS assay, caspase-3 assay was performed. Dual luciferase reporter assay was performed to verify the relationship between miR-211 of ***： Compared to the control group, expression of miR-211 was significantly increased（P〈0.001）, the miR NA and protein expression of SIRT1 were significantly decreased（P〈0.001） in the anterior lens capsules of patients with age-related cataracts. Relative to the control group, SIRT1 miR NA and protein levels in the miR-211 mimic group were significantly reduced, cell proliferation activity significantly decreased, and caspase-3 activity was significantly increased（P〈0.001）. In the miR-211 inhibitor group, SIRT1 miRNA and protein expression were significantly increased, cell proliferation activity significantly increased, and caspase-3 activity was significantly decreased（P〈0.001）. A dual luciferase reporter assay confirmed that SIRT1 is a direct target of ***： miR-211 is highly expressed in the anterior lens capsules of patients with age-related cataracts. By negatively regulating the expression of SIRT1, miR-211 promotes lens epithelial cell apoptosis and inhibits lens epithelial cell prolifera

关键词： miR-211 silent mating-type information regulation 2 homolog 1 cataract apoptosis proliferation

miR-211 regulates the antioxidant function of lens epithelial cells affected by age-related cataracts

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International Journal of Ophthalmology(English edition) 2018年第3期11卷 349-353页

作者： Bo Lu Ian T. Christensen Li-Wei Ma Tao Yu ling-Feng Jiang Chun-Xia wang Li Feng Jin-Song Zhang Qi-Chang Yan xin-ling wang Department of Ophthalmology the Fourth Affiliated Hospital of China Medical University Key Laboratory of Lens Research of Liaoning Province Eye Hospital of China Medical University Shenyang 110005 Liaoning Province China University of Utah School of Medicine Salt Lake City Utah 84132 USA Department of Medical Imaging Cancer Hospital of China Medical University Liaoning Cancer Hospital & Institute Shenyang 110042 Liaoning Province China

AIM： To investigate the effects and mechanism of miR-211 in mediating the antioxidant function of lens epithelial cells affected by age-related cataracts. METHODS： Real-time quantitative polymerase chain reaction （RT-qPCR） was used to detect miR-211 expression in the anterior lens capsules of healthy people, the anterior lens capsules of patients with age-related cataracts, and human epithelial cell line （SRA01/04） cells exposed to oxidative stress. A 2＇, 7＇-dichloro-fluorescein diacetate （DCFH-DA） probe was used to measure the levels of endogenous reactive oxygen species （ROS） in human lens epithelial cells （hLECs） exposed to 400 pmol/L H2O2 for lh. SRA01/04 cells were transfected with either miR-211 mimics, mimic controls, miR-211 inhibitors or inhibitor controls. After 72h, these cells were exposed to 400 IJmollL H2O2 for lh, then p53 and Bax mRNA expression were measured using RT-qPCR. p53 and Bax protein expression were also measured by Western blotting analysis. Finally, cell viability was assessed using an MTS assay. RESULTS： Compared to the control group, expression of miR-211 in the anterior lens capsules of age-related cataract patients and in SRA01/04 cells exposed to oxidative stress was significantly increased （P〈0.001）. Levels of endogenous ROS were significantly elevated in hLECs exposed to oxidative stress （P〈0.001）. Compared to the mimic control group, the hLECs in the miR-211 mimic group expressed significantly higher levels of p53 and Bax mRNA and protein while cell viability was significantly reduced （P〈0.001）. Conversely, p53 and Bax mRNA and protein expression were significantly reduced in the miR-211 inhibitor group as compared to the control group, while the cells in this group had much higher levels of call viability （P〈0.001）. CONCLUSION： miR-211 is upregulatsd in the anterior lens capsules of age-related cataract patients, miR-211 decreased the antioxidative stress capacity of lens epithelial cells by upregulating p53 and Bax, while inhib

关键词： KEYWORDS: miR-211 p53 Bax age-related cataract oxi-dative stress

SUMOylation and deacetylation affect NF-κB p65 activity induced by high glucose in human lens epithelial cells

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International Journal of Ophthalmology(English edition) 2019年第9期12卷 1371-1379页

作者： Xiao Han Xiao-Xuan Dong Ming-Yu Shi Li Feng xin-ling wang Jin-Song Zhang Qi-Chang Yan Department of Ophthalmology the Fourth Affiliated Hospital of China Medical UniversityKey Laboratory of Lens Research of Liaoning ProvinceEye Hospital of China Medical UniversityShenyang110005Liaoning ProvinceChina Department of Ophthalmology the Fourth People’s Hospital of ShenyangShenyang110031Liaoning ProvinceChina

AIM: To explore the effects of IκBα SUMOylation and NF-κB p65 deacetylation on NF-κB p65 activity induced by high glucose in cultured human lens epithelial cells(HLECs).METHODS: HLECs(SRA01/04) were cultured with 5.5, 25, and 50 mmol/L glucose media for 24 h, and with 50 mmol/L glucose media for 0, 12, and 24 h respectively. SUMO1 and SIRT1 expressions were detected by reverse transcriptionpolymerase chain reaction(RT-PCR) and Western blot(WB). IκBα and NF-κB p65 expressions were detected by WB. With NAC, DTT, MG132 or Resveratrol(RSV) treatment, SUMO1 and SIRT1 expressions were detected by WB. Protein expression localizations were examined by immunofluorescence and co-immunofluorescence. The effects of SUMO1 or SIRT1 overexpression, as well as MG132 and RSV, on the nuclear expression and activity of IκBα and NF-κB p65 were analyzed by immunoblot and dual luciferase reporter gene ***: SUMO1 and SIRT1 expressions were influenced by high glucose in mRNA and protein levels, which could be blocked by NAC or DTT. SUMO1 was down-regulated by using MG132, and SIRT1 was up-regulated under RSV treatment. IκBα nuclear expression was attenuated and NF-κB p65 was opposite under high glucose, while IκBα and NF-κB p65 location was transferred to the nucleus. SUMO1 or SIRT1 overexpression and MG132 or RSV treatment affected the nuclear expression and activity of IκBα and NF-κB p65 under high glucose ***: IκBα SUMOylation and NF-κB p65 deacetylation affect NF-κB p65 activity in cultured HLECs under high glucose, and presumably play a significant role in controlling diabetic cataract.

关键词： SUMOylation deacetylation NF-κB p65 IκBα diabetic cataract high glucose lens epithelial cells

Study on synthesis of 2-(5-bromo-2-methylbenzyl)-5-(4-fluorophenyl)thiophene

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Study on synthesis of 2-(5-bromo-2-methylbenzyl)-5-(4-fluoro...

Survival Analysis of Hepatocellular Carcinoma： A Comparison Between Young Patients and Aged Patients

河南省化学会2016年学术年会

作者： xin-ling wang Huai-xia Yang College of Pharmacy Henan University of Chinese Medicine

In the synthesis of 2-(4-fluorophenyl)thiophene(1), the 1-bromo-4-fluorobenzene and2-bromothiophene was used as starting material, the highest yield was obtained when reaction time was 8h at 20 ℃;2 and 5-bromo-2-methylbenzoic acid was used to prepare5-bromo-2-methylphenyl-2-(4-fluorophenyl)thiophene ketone(2), the the highest yield was obtained when reaction time was 10 h at 20 ℃;in the preparation of 2-(5-bromo-2-methylbenzyl)-5-(4-fluorophenyl)thiophene(3), the best ratio of Zn dust to 4 was 3:1 and the favorable temperature was 100 ℃.

关键词： 2-(5-bromo-2-methylbenzyl)-5-(4-fluorophenyl)thiophene intermediate synthesis

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Chinese Medical Journal 2015年第13期128卷 1793-1800页

作者： xin-Sen Xu Wei Chen Run-Chen Miao Yan-Yan Zhou Zhi-xin wang ling-Qiang Zhang Kai Qu Qing Pang Rui-Tao wang Chang Liu Department of Hepatobiliary Surgery The First Affiliated Hospital of Medical College Xi'an Jiaotong University Xi'an Shannxi 710061 China

Background： To compare the clinicopathological features and prognosis between younger and aged patients with hepatocellular carcinoma （HCC）. Methods： We analyzed the outcome of 451 HCC patients underwent liver resection, transcatheter arterial chemoembolization and radiofrequency ablation, respectively. Then risk factors for aged and younger patients＇ survival were evaluated by multivariate analysis, respectively. Results： The patients who were older lhan 55 years old were defined as the older group. The overall survival for aged patients was significantly worse than those younger patients. The younger patients had similar liver fhnctional reserve but more aggressive tumor Paclors than aged patients. Cox regression analysis showed that tile elevated levels ofaspartate aminotransferase （AST）（Waldx2= 3.963, P = 0.047, hazard ratio [HR] -1.453, 95% confidence interval [CI]： 1.006-2.098）, lower albumin （Wald X2 = 12.213, P 〈 0.001, HR 1.982, q5% CI： 1.351 2.910）, tumor size （Wald X2 = 8.179, P- 0,004, HR - 1.841,95% CI： 1.212-2.797）, and higher alpha-fetoprotein level （Wald X2=4.044, P = 0.044, HR = 1,465, 95% （CI： 1.010 2.126） were independent prognostic factors for aged patients, while only elevated levelsofAST（WaldZ= 14.491,P〈0.001,HR 2.285, 95%CI： 1.493-3.496）andtumorsize（WaldX2= 21.662, P〈0.001,HR= 2.928, 95% CI： 1.863-4.604） were independent prognostic factors for younger patients. Conclusions： Age is a risk factor to determine the prognosis of patients with HCC. Aged patients who have good liver lhnctional reserve are still encouraged to receive curative therapy.

关键词： Age Hepatocellular Carcinoma: Multivariate Analysis: Prognosis

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长链非编码RNA在眼部疾病中的作用

国际眼科杂志 2020年第10期20卷 1719-1721页

作者：徐鑫令侯乃方王欣玲中国医科大学附属第四医院眼科中国医科大学眼科医院辽宁省晶状体重点实验室中国辽宁省沈阳市110000

长链非编码RNA(LncRNAs)是指长度大于200个核苷酸且不能编码蛋白质的RNA。随着新一代高通量测序技术的应用,对全基因组分析表明,LncRNAs可以调节免疫应答、表观遗传、基因转录及转录后水平的基因表达,从而参与维持细胞的增殖与凋亡、组... 详细信息

长链非编码RNA(LncRNAs)是指长度大于200个核苷酸且不能编码蛋白质的RNA。随着新一代高通量测序技术的应用,对全基因组分析表明,LncRNAs可以调节免疫应答、表观遗传、基因转录及转录后水平的基因表达,从而参与维持细胞的增殖与凋亡、组织内稳态等生理过程。近年来研究发现LncRNAs与人体多种疾病的发生发展相关。本文主要就LncRNAs在眼科常见疾病中的研究进展进行综述,以期对相关眼科疾病进行早期诊断与治疗。

关键词：长链非编码RNA 眼部疾病靶基因基因调控基因治疗

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环状RNA在眼部疾病中的研究进展

国际眼科杂志 2022年第2期22卷 215-219页

作者：邹丽荣王欣玲中国医科大学附属第四医院眼科中国医科大学眼科医院辽宁省晶状体重点实验室中国辽宁省沈阳市110000

环状RNA(circRNA)是由反向剪接过程产生的单链共价封闭的RNA分子,是进化保守且稳定的转录物,广泛存在于各种真核细胞中。与线性转录物相比,circRNA缺乏5'末端帽子和3'末端尾巴,该结构赋予其更高的稳定性和保守性。circRNA广泛调控细胞... 详细信息

环状RNA(circRNA)是由反向剪接过程产生的单链共价封闭的RNA分子,是进化保守且稳定的转录物,广泛存在于各种真核细胞中。与线性转录物相比,circRNA缺乏5'末端帽子和3'末端尾巴,该结构赋予其更高的稳定性和保守性。circRNA广泛调控细胞分化、增殖、血管生成与凋亡等多种生物活性过程,已被证明是各种疾病,尤其是癌症、神经退行性疾病与心血管疾病的关键调节因子。最近,随着RNA高通量测序技术的快速发展,越来越多的证据表明circRNA在眼部组织中表达有明显差异,与白内障、青光眼、视网膜病变以及眼部肿瘤和免疫性相关眼病等多种眼科疾病的发生、发展和转归密切相关。本文就近几年circRNA与眼部疾病关系的研究作简要概述,旨在为眼部疾病的临床诊疗和预后提供参考。

关键词：非编码RNA 环状RNA 眼部疾病

Return to work in young and middle-aged colorectal cancer survivors:Factors influencing self-efficacy,fear,resilience,and financial toxicity

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World Journal of Gastroenterology 2025年第1期31卷 79-92页

作者： Dan Hu Yue Li Hua Zhang Lian-Lian wang Wen-Wen Liu xin Yang Ming-Zhao Xiao Hao-ling Zhang Juan Li Department of Nursing The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Nursing National Clinical Research Center for Child Health and DisordersMinistry of Education Key Laboratory of Child Development and DisordersChildren’s Hospital of Chongqing Medical UniversityChongqing 400014China Department of Gastrointestinal Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Biomedical Science Advanced Medical and Dental InstituteUniversity Sains MalaysiaPenang 13200Malaysia Academic Affairs Office The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND Return to work(RTW)serves as an indication for young and middle-aged colorectal cancer(CRC)survivors to resume their normal social ***,these survivors encounter significant challenges during their RTW ***,scientific research is necessary to explore the barriers and facilitating factors of returning to work for young and middle-aged CRC *** To examine the current RTW status among young and middle-aged CRC survivors and to analyze the impact of RTW self-efficacy(RTW-SE),fear of progression(FoP),eHealth literacy(eHL),family resilience(FR),and financial toxicity(FT)on their RTW *** A cross-sectional investigation was adopted in this *** September 2022 to February 2023,a total of 209 participants were recruited through a convenience sampling method from the gastrointestinal surgery department of a class A tertiary hospital in *** investigation utilized a general information questionnaire alongside scales assessing RTW-SE,FoP,eHL,FR,and *** analyze the factors that influence RTW outcomes among young and middle-aged CRC survivors,Cox regression modeling and Kaplan-Meier survival analysis were *** A total of 43.54%of the participants successfully returned to work,with an average RTW time of 100 *** regression univariate analysis revealed that RTW-SE,FoP,eHL,FR,and FT were significantly different between the non-RTW and RTW groups(P<0.05).Furthermore,Cox regression multivariate analysis identified per capita family monthly income,job type,RTW-SE,and FR as independent influencing factors for RTW(P<0.05).CONCLUSION The RTW rate requires further *** levels of RTW-SE and FR were found to significantly increase RTW among young and middle-aged CRC *** professionals should focus on modifiable factors,such as RTW-SE and FR,to design targeted RTW support programs,thereby facilitating their timely reintegration into mainstream society.

关键词： Return to work Colorectal neoplasms Return-to-work self-efficacy Fear of progression Family resilience Financial toxicity