Effect of c-fos gene silence on PM2.5-induced miRNA alteration in human bronchial epithelial cells
作者:
Cai, Ying;Li, Runbing;Zheng, Kai;Wang, Bingyu;Qin, Shuangjian;...
期刊:
Environmental Toxicology and Pharmacology ,2021年84:103607 ISSN:1382-6689
通讯作者:
Zhang, Z.
作者机构:
[Zhang, Zhaohui; Cai, Ying; Li, Runbing; Wang, Bingyu; Zheng, Kai] Univ South China, Sch Publ Hlth, Hengyang 421001, Hunan, Peoples R China.;[Xu, Xinyun; Cai, Ying; Qin, Shuangjian; Li, Runbing; Wang, Bingyu; Zheng, Kai; Li, Boru; Huang, Haiyan] Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, Shenzhen 518055, Guangdong, Peoples R China.;[Qin, Shuangjian; Li, Boru] Cent South Univ, Xiangya Sch Publ Hlth, Changsha 410078, Hunan, Peoples R China.
通讯机构:
[Zhang, Z.] S;School of Public Health, China
关键词:
PM2;c-fos gene;Gene silence;miRNA;Bioinformatics
摘要:
Human bronchial epithelial (HBE) cells and c-fos-silenced HBE cells were first exposed to fine particulate matter (PM2.5) and the resulting miRNA sequenced. Thereafter, a weighted gene co-expression network analysis was performed using Cytoscape software to visualize the interactions between identified hub miRNAs and their target genes. Nine differentially expressed miRNAs in hub miRNAs were identified in the different treatment groups, of which miR-25-3p, miR-215-5p, and miR-145-5p were selected for further study. Following qPCR validation, both miR-25-3p and miR-215-5p were found to be significantly up-regulated whilst, miR-145-5p was significantly down-regulated (p < 0.05) in the PM2.5 group. Furthermore, miR-25-3p and miR-145-5p were also significantly down-regulated in the untreated group of c-fos silenced HBE cells. However, miR-215-5p was significantly down-regulated in both the untreated and PM2.5-treated groups of c-fos silenced HBE cells. Subsequent analysis of their target genes also illustrated differential gene expression when comparing the treatment groups of the two cell types. The present data indicated that the c-fos gene has an important effect on the miRNA expression profiles and the related signaling pathways in PM2.5-treated HBE cells. Therefore, each of miR-25-3p, miR-145-5p, and miR-215-5p may potentially provide future research information for additional exploration of a PM2.5-induced carcinogenesis mechanism.
语种:
英文
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外泌体在肺部炎症性疾病中的研究进展
作者:
孙梦婷;李慧芹;谭滇湘;张朝晖
期刊:
实用预防医学 ,2021年28(01):124-129 ISSN:1006-3110
作者机构:
[李慧芹; 张朝晖; 孙梦婷] 南华大学公共卫生学院;[谭滇湘] 衡阳市中心医院
关键词:
外泌体;肺部疾病;炎症;发病机制
摘要:
外泌体为可由多种细胞分泌的纳米级双层膜囊泡,且存在于人体不同的体液中。外泌体可通过携带DNA、RNA、蛋白质和脂质等物质至受体细胞进行细胞间的信息交流。此外,外泌体具有多种功能,可参与至抗原提呈、免疫激活、免疫抑制等免疫调节过程中。近年来,越来越多的研究指出外泌体在一些肺部炎症性疾病的发病进展中发挥着重要的作用,如:慢性阻塞性肺疾病(chronic obstructive pulmonary disease, COPD)、哮喘等,且与一些肺部炎症性疾病的诊断及其分期呈现相关关系,如COPD等,故外泌体可望作为这些疾病的新型诊断标志物及生物治疗靶点。本文将对外泌体在一些肺部炎症性疾病中的研究进展做一介绍。
语种:
中文
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基于数据库中肺纤维化miRNA及肺癌mRNA芯片资料分析筛查肺癌的潜在治疗靶点
作者:
孙站兵;邓伟华;刘艳萍;谭滇湘;张朝晖
期刊:
生命的化学 ,2021年41(01):133-142 ISSN:1000-1336
作者机构:
[孙站兵; 刘艳萍; 张朝晖; 邓伟华] 南华大学公共卫生学院;[谭滇湘] 衡阳市中心医院麻醉科
关键词:
肺癌;肺纤维化;生物信息学
摘要:
肺癌严重危害人类健康,患者预后较差。肺纤维化是肺癌的危险因素之一,与肺癌的发病机制存在一定关系。肺纤维化中失调的微小RNA(microRNA, miRNA)在肺癌发生发展过程中发挥着重要作用。本研究使用基因表达综合数据库(Gene Expression Omnibus, GEO)中肺纤维化miRNA及肺癌mRNA的芯片数据,利用GEO2R筛选肺纤维化差异miRNA与肺癌差异基因、miRWalk预测miRNA靶基因、STRING分析互作关系、WebGestalt进行GO与KEGG分析、GEPIA分析基因对患者生存的影响,最终获得SNRPE、PIK3R1、ARHGEF6等潜在的肺癌治疗靶点。通过对这些潜在靶点的认识进一步了解肺癌的发生发展机制,为肺癌的临床治疗贡献新的思路。
语种:
中文
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Proteomics Study on the Differentially Expressed Proteins in c-fos-silenced Cells Exposed to PM_(2.5)
作者:
Cai Ying;Zheng Kai;Li Run Bing;Yu Shu Yuan;Liu Ning;...
期刊:
生物医学与环境科学:英文版 ,2020年33(9):680-689 ISSN:0895-3988
通讯作者:
Zhang Zhao Hui;Xu Xin Yun
作者机构:
[Zhang Zhao Hui; Cai Ying; Li Run Bing; Zheng Kai] Univ South China, Sch Publ Hlth, Hengyang 421001, Hunan, Peoples R China.;[Ji Jia Jia; Yu Shu Yuan; Li Bo Ru; Wu De Sheng; Xu Xin Yun; Qin Shuang Jian; Liu Ning; Cai Ying; Li Run Bing; Zheng Kai; Yang Chen] Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, Shenzhen 518055, Guangdong, Peoples R China.;[Li Bo Ru; Qin Shuang Jian] Cent South Univ, Xiangya Sch Publ Hlth, Changsha 410078, Hunan, Peoples R China.
通讯机构:
[Zhang Zhao Hui] U;[Xu Xin Yun] S;Univ South China, Sch Publ Hlth, Hengyang 421001, Hunan, Peoples R China.;Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, Shenzhen 518055, Guangdong, Peoples R China.
关键词:
PM2.5;Human bronchial epithelial cells;Gene silence;Proteomics;Bioinformatics
摘要:
Objective: To investigate the effect of c-fos gene silencing on differentially expressed proteins (DEPs) in human bronchial epithelial (HBE) cells after exposure to fine particulate matter (PM2.5). Methods: HBE cells and c-fos-silenced HBE cells were exposed to 50 µg/mL PM2.5, LC-MS/MS and tandem mass tag (TMT) labeling methods were combined with bioinformatics methods, and DEPs and interaction networks were identified. Results: In the HBE group, 414 DEPs were screened, of which 227 were up-regulated and 187 down-regulated. In the c-fos silenced HBE group, 480 DEPs were screened, including 240 up-regulated proteins and 240 down-regulated proteins. KEGG annotations showed that DEPs in the HBE group are mainly concentrated in the glycolysis/gluconeogenesis pathway and those in the c-fos silenced group are concentrated mainly in endoplasmic reticulum and the processing of proteins. Additionally, the abnormal expression of GPRC5C, DKK4, and UBE2C was identified in top 15 DEPs. After constructing the protein interaction network, 20 Hub proteins including HNRNPA2B1, HNRNPL, RPS15A, and RPS25 were screened from the HBE group and the c-fos silenced HBE group. Conclusion: c-fos gene affected the expression of cancer-related proteins. Our results provided a scientific basis for further study of PM2.5-induced carcinogenesis mechanism. © 2020 The Editorial Board of Biomedical and Environmental Sciences
语种:
英文
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Characteristics of Atmospheric Fine Particulate Matter (PM_(2.5)) Induced Differentially Expressed Proteins Determined by Proteomics and Bioinformatics Analyses
作者:
Zheng Kai;Cai Ying;Wang Bing Yu;Qin Shuang Jian;Li Bo Ru;...
期刊:
生物医学与环境科学:英文版 ,2020年33(8):583-592 ISSN:0895-3988
通讯作者:
Xu Xin Yun
作者机构:
[Long Ding Xin; Wang Bing Yu; Zhang Zhao Hui; Cai Ying; Zheng Kai] Univ South China, Sch Publ Hlth, Hengyang 421001, Hunan, Peoples R China.;[Li Bo Ru; Wang Bing Yu; Xu Xin Yun; Qin Shuang Jian; Cai Ying; Qin Xiao Yun; Zheng Kai; Huang Hai Yan] Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, Shenzhen 518055, Guangdong, Peoples R China.;[Li Bo Ru; Qin Shuang Jian] Cent South Univ, Xiangya Sch Publ Hlth, Changsha 410078, Hunan, Peoples R China.
通讯机构:
[Xu Xin Yun] S;Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, Shenzhen 518055, Guangdong, Peoples R China.
关键词:
PM2.5;Proteomics;Bioinformatics;Differentially expressed proteins;Weighted correlation network analysis
摘要:
Objective To screen the differentially expressed proteins (DEPs) in human bronchial epithelial cells (HBE) treated with atmospheric fine particulate matter (PM2.5). Methods HBE cells were treated with PM2.5 samples from Shenzhen and Taiyuan for 24 h. To detect overall protein expression, the Q Exactive mass spectrometer was used. Gene ontology (GO), Kyoto encyclopedia of genes and genomes (KEGG), and Perseus software were used to screen DEPs. Results Overall, 67 DEPs were screened in the Shenzhen sample-treated group, of which 46 were upregulated and 21 were downregulated. In total, 252 DEPs were screened in the Taiyuan sample-treated group, of which 134 were upregulated and 118 were downregulated. KEGG analysis demonstrated that DEPs were mainly enriched in ubiquitin-mediated proteolysis and HIF-1 signal pathways in Shenzhen PM2.5 samples-treated group. The GO analysis demonstrated that Shenzhen sample-induced DEPs were mainly involved in the biological process for absorption of various metal ions and cell components. The Taiyuan PM2.5-induced DEPs were mainly involved in biological processes of protein aggregation regulation and molecular function of oxidase activity. Additionally, three important DEPs, including ANXA2, DIABLO, and AIMP1, were screened. Conclusion Our findings provide a valuable basis for further evaluation of PM2.5-associated carcinogenesis.
语种:
英文
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沉默c-fos基因对PM2.5染毒人支气管上皮细胞癌基因和凋亡相关基因表达的影响
作者:
蔡颖;郑凯;秦双建;李柏茹;余淑苑;...
期刊:
癌变·畸变·突变 ,2020年32(04):298-303+308 ISSN:1004-616X
作者机构:
南华大学公共卫生学院,湖南 衡阳421001;深圳市疾病预防控制中心,广东深圳 518055;中南大学湘雅公共卫生学院,湖南 长沙 410078;[张朝晖; 蔡颖; 郑凯] 南华大学;[徐新云; 季佳佳; 余淑苑; 李柏茹; 秦双建; 刘宁] 深圳市疾病预防控制中心
关键词:
大气细颗粒物;人支气管上皮细胞;基因沉默;癌基因;凋亡相关基因
摘要:
目的:探讨沉默c-fos基因对PM2.5染毒人支气管上皮细胞(HBE细胞)癌基因和凋亡相关基因表达的影响。方法:采用RNA干扰技术,根据GenBank提供的c-fos mRNA序列,设计合成shRNA干扰序列,将重组慢病毒载体转染HBE细胞,构建c-fos基因沉默细胞株。采用实时荧光定量PCR(qPCR)和Western blot对c-fos基因沉默效果进行鉴定。以HBE细胞、c-fos基因沉默细胞为实验对象,用浓度为50μg/mL的PM2.5混悬液染毒24 h,同时设立阴性对照组,qPCR和Western blot分别检测部分癌基因c-myc、k-ras、c-fos、p53和凋亡相关基因Caspase-3、Caspase-8在mRNA及蛋白质表达水平的变化。结果:转染c-fos-shRNA慢病毒的HBE细胞中,经qPCR和Western blot检测发现,与对照组HBE细胞相比,c-fos m RNA表达水平下降70.1%,c-fos蛋白表达水平下降53.7%。PM2.5染毒HBE细胞后,与未染毒的对照组比较,c-myc和k-ras mRNA表达水平分别升高30.46%、27.17%,差异均有统计学意义(P<0.05),c-fos、Caspase-3、Caspase-8 mRNA表达水平分别升高50.78%、71.91%、74.16%,p53 mRNA表达水平下降12.27%,差异均有统计学意义(P<0.01)。PM2.5染毒c-fos基因沉默细胞后,与未染毒组比较,c-myc、k-ras mRNA表达水平分别下降13.08%、5.39%,Caspase-3、Caspase-8 mRNA表达水平分别下降25.03%、21.37%(P<0.05),p53 mRNA下降53.39%(P<0.01)。此外,c-fos基因沉默细胞染毒后,与HBE正常细胞染毒后比较,c-myc、k-ras、p53、c-fos、Caspase-3和Caspase-8的mRNA表达水平均有所下降(P<0.05);仅c-myc蛋白表达下降(P<0.01)。结论:成功构建c-fos基因沉默细胞株;PM2.5可引起HBE细胞癌基因和凋亡相关基因表达水平明显升高,c-fos基因沉默在一定程度上能抑制PM2.5对癌基因和凋亡相关基因的激活作用。
语种:
中文
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肺纤维化circRNA及miRNA芯片数据挖掘及生物信息学分析
作者:
刘艳萍;雷媛娣;蔡颖;袁小燕;王烨;...
期刊:
生命的化学 ,2020年40(10):1850-1860 ISSN:1000-1336
作者机构:
南华大学公共卫生学院,衡阳421001;[邓伟华; 张朝晖; 孙站兵; 雷媛娣; 蔡颖; 王烨; 刘艳萍; 袁小燕] 南华大学
关键词:
肺纤维化;生物信息学
摘要:
肺纤维化是一种进展的致死性呼吸系统疾病,预后较差且缺乏特效的治疗方法。研究发现,环状RNA(circular RNA, circRNA)和微小RNA(microRNA, miRNA)作为内源性非编码RNA分子可参与多种生物学过程,在肺纤维化的发生发展中起重要作用。本研究利用基因表达综合数据库(Gene Expression Omnibus, GEO)、GEO2R工具筛选肺纤维化相关的差异表达circRNA及miRNA,使用circular RNA Interactom预测与差异表达circRNA结合的miRNA,用TargetScan、miRDB及miRWalk预测miRNA靶基因,并用DAVID对靶基因进行GO分析和KEGG功能分析,用STRING对靶基因进行蛋白质相互作用预测。结果显示,共筛选出肺纤维化相关的差异表达的circRNA、miRNA分别有18个和21个,预测了与差异表达的circRNA相互作用的miRNA及mRNA,并构建了circRNA-miRNA-mRNA相互作用网络图。 DAVID基因功能富集分析发现,circRNA可能通过AMPK信号通路参与肺纤维化过程。构建蛋白质相互作用网络图发现它的10个关键节点。研究结果旨在为circRNA及miRNA在肺纤维化中的发病机制研究提供参考,为肺纤维化治疗拓宽思路。
语种:
中文
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一种简易大鼠非暴露式气管滴注方法的建立
作者:
王烨;孙梦婷;谭滇湘;雷媛娣;李鹏;...
期刊:
毒理学杂志 ,2020年34(02):176-178 ISSN:1002-3127
作者机构:
南华大学公共卫生学院, 湖南, 衡阳, 421001;衡阳市中心医院, 湖南, 衡阳, 421001;[李鹏; 谭滇湘] 衡阳市中心医院;[张朝晖; 雷媛娣; 蔡颖; 孙梦婷; 刘艳萍; 王烨; 袁小燕] 南华大学
关键词:
大鼠;非暴露式;气管插管;滴注;呼吸音
摘要:
常用的呼吸道染毒方法有暴露式气管滴注、鼻内滴注和非暴露式气管滴注.非暴露式气管滴注通过气管插管将滴注液输送到肺部,无需手术切口暴露气管,染毒剂量准确且对实验动物伤害较小.非暴露式气管滴注的方法有:盲探插管、透射光插管,使用光纤、喉镜、头戴式放大镜、内窥镜等辅助插管,但这些方法大多需要特殊设备,对于大鼠等小型哺乳类动物而言,由于其口腔、咽部解剖学情况使得插管较为困难,现今还没有标准的气管插管设备供大鼠使用,且操作技能要求较高[1-7].本课题组拟建立一种操作简单、安全性高、动物死亡率低、设备要求低的大鼠非暴露式气管滴注方法及其评价方法,现介绍如下.
语种:
中文
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The role of protein kinase C alpha in tri-ortho-cresyl phosphate-induced autophagy in human neuroblastoma SK-N-SH cells
作者:
Deng, Qiang;Jiang, Lan;Mao, Liang;Song, Xiao-Hua;He, Chu-Qi;...
期刊:
Journal of Applied Toxicology ,2020年40(11):1480-1490 ISSN:0260-437X
通讯作者:
Long, Ding-Xin
作者机构:
[Jiang, Lan; He, Chu-Qi; Song, Xiao-Hua; Li, Xiao-Ling; Deng, Qiang; Zhang, Zhao-Hui; Mao, Liang; Zeng, Huai-Cai; Long, Ding-Xin] Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.;[Chen, Jia-xiang] Nanchang Univ, Jiangxi Med Coll, Nanchang, Jiangxi, Peoples R China.
通讯机构:
[Long, Ding-Xin] U;Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.
关键词:
phorbol 13 acetate 12 myristate;proteasome;protein kinase C alpha;sequestosome 1;staurosporine;tau protein;tri ortho cresyl phosphate;ubiquitin;ubiquitinated protein;MAP1LC3A protein, human;MAP2 protein, human;MAPT protein, human;microtubule associated protein;NBR1 protein, human;neurofilament protein;neurofilament protein H;PRKCA protein, human;proteasome;protein kinase C alpha;sequestosome 1;signal peptide;SQSTM1 protein, human;tau protein;tri-o-cresyl phosphate;tricresyl phosphate;Article;autophagy (cellular);bioaccumulation;controlled study;enzyme activation;enzyme activity;human;human cell;intracellular signaling;neuroblastoma;neurotoxicity;priority journal;protein degradation;protein phosphorylation;SK-N-SH cell line;son;tumor suppressor gene;autophagy;drug effect;enzymology;metabolism;nerve cell;phosphorylation;signal transduction;tumor cell line;ubiquitination;ultrastructure;Autophagy;Cell Line, Tumor;Enzyme Activation;Humans;Intracellular Signaling Peptides and Proteins;Microtubule-Associated Proteins;Neurofilament Proteins;Neurons;Phosphorylation;Proteasome Endopeptidase Complex;Protein Kinase C-alpha;Proteolysis;Sequestosome-1 Protein;Signal Transduction;tau Proteins;Tritolyl Phosphates;Ubiquitination
摘要:
As an organophosphorus ester, tri-ortho-cresyl phosphate (TOCP) has been widely used in agriculture and industry. It is reported that TOCP can induce organophosphate-induced delayed neuropathy (OPIDN) in sensitive animal and human species. However, the exact molecular mechanisms underlying TOCP-induced neurotoxicity are still unknown. In this study, we found that TOCP could induce autophagy by activating protein kinase C alpha (PKCα) signaling in neuroblastoma SK-N-SH cells. PKCα activators could positively regulate TOCP-induced autophagy by increasing the expression levels of neighbor BRCA1 gene protein 1 (NBR1), LC3 and P62 autophagic receptor protein. Furthermore, PKCα activation impaired the ubiquitin-proteasome system (UPS), resulting in inhibition of proteasome activity and accumulation of ubiquitinated proteins. UPS dysfunction could stimulate autophagy to serve as a compensatory pathway, which contributed to the accumulation of the abnormally hyperphosphorylated tau proteins and degradation of impaired proteins of the MAP 2 and NF-H families in neurodegenerative disorders. © 2020 John Wiley & Sons, Ltd.
语种:
英文
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人CSE蛋白的结构与功能分析
作者:
袁小燕;王烨;刘艳萍;雷媛娣;张朝晖
期刊:
生物信息学 ,2020年18(03):141-148 ISSN:1672-5565
作者机构:
南华大学公共卫生学院预防医学系,湖南衡阳,421001;[张朝晖; 雷媛娣; 刘艳萍; 王烨; 袁小燕] 南华大学
关键词:
胱硫醚-γ-裂合酶(CSE);生物信息学;分子结构;功能
摘要:
胱硫醚-γ-裂合酶(Cystathionine-γ-lyase,CSE)是一种参与半胱氨酸合成并催化H2S生成的关键性限速酶,具有信号传导和细胞保护作用。分析人CSE蛋白的结构及其功能对了解其调控机制具有重要意义。利用生物信息数据库和分析软件,对人CSE蛋白进行分子结构和理化性质分析。结果显示:人CSE蛋白位于人类1号染色体,含有373个氨基酸是稳定的亲水性蛋白,不具有跨膜结构,无信号肽属于非分泌性蛋白,蛋白二级结构以无规则卷曲为主,含有保守结构域、蛋白定位于细胞质的可能性大、具有大量的丝氨酸(Ser)磷酸化位点和较少的酪氨酸(Tyr)磷酸化位点、与TST、TXNRD1等蛋白有结合能力。对CSE蛋白的分子结构与功能分析为深入研究CSE蛋白的作用机制提供了研究基础。
语种:
中文
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The expression profile and bioinformatics analysis of microRNAs in human bronchial epithelial cells treated by beryllium sulfate
作者:
Yi, Shan;Liu, Yan-ping;Li, Xun-ya;Yuan, Xiao-yan;Wang, Ye;...
期刊:
Journal of Applied Toxicology ,2020年41(8):1275-1285 ISSN:0260-437X
通讯作者:
Zhang, Zhao-hui
作者机构:
[Yi, Shan; Cai, Ying; Wang, Ye; Yuan, Xiao-yan; Zhang, Zhao-hui; Liu, Yan-ping; Huang, Lian; Li, Xun-ya; Lei, Yuan-di] Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.
通讯机构:
[Zhang, Zhao-hui] U;Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.
关键词:
beryllium sulfate;cyclooxygenase 2;gamma interferon;inducible nitric oxide synthase;interleukin 10;let 7a 3p;microRNA;microRNA 1306;microRNA 193b;microRNA 23b;microRNA 3182;microRNA 3529 3p;microRNA 369 3p;microRNA 4485 3p;microRNA 514a 3p;microRNA 663b;microRNA 877;mitogen activated protein kinase;Rap1 protein;tumor necrosis factor;unclassified drug;vasculotropin;beryllium;beryllium sulfate;cytokine;microRNA;transcriptome;16HBE14o- cell line;Article;bioinformatics;cell viability;controlled study;down regulation;gene expression profiling;gene ontology;gene targeting;high throughput sequencing;human;human cell;IC50;MAPK signaling;pathway enrichment analysis;prediction;protein binding;real time polymerase chain reaction;signal transduction;transcription regulation;upregulation;VEGF signaling;bronchus;cell line;cell survival;cytology;drug effect;enzyme linked immunosorbent assay;metabolism;respiratory mucosa;Western blotting;Beryllium;Blotting, Western;Bronchi;Cell Line;Cell Survival;Cytokines;Enzyme-Linked Immunosorbent Assay;High-Throughput Nucleotide Sequencing;Humans;MicroRNAs;Real-Time Polymerase Chain Reaction;Respiratory Mucosa;Transcriptome
摘要:
Beryllium and its compounds are systemic toxicants that mainly accumulate in the lungs. As a regulator of gene expression, microRNAs (miRNAs) were involved in some lung diseases. This study aimed to analyze the levels of some inflammatory cytokine and the differential expressions of miRNAs in human bronchial epithelial cells (16HBE) induced by berylliumsulfate (BeSO4) and to further explore the biological functions of differentially expressed miRNAs. The profile of miRNAs in 16HBE cells was detected using the high-throughput sequencing between the control groups (n=3) and the 150μmol/L of BeSO4-treated groups (n=3). Bioinformatics analysis of differentially expressed miRNAs was performed, including the prediction of target genes, Gene Ontology (GO) analysis, and the Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied to verify some damage-related miRNAs. We found that BeSO4 can increase the levels of some inflammatory cytokine such as interleukin-10 (IL-10), tumor necrosis factor-alpha (TNF-α), interferon-γ (IFN-γ), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2). And BeSO4 altered miRNAs expression of 16HBE cells and a total of 179 differentially expressed miRNAs were identified, including 88 upregulated miRNAs and 91 downregulated miRNAs. The target genes predicted by 28 dysregulated miRNAs were mainly involved in the transcription regulation, signal transduction, MAPK, and VEGF signaling pathway. The qRT-PCR verification results were consistent with the sequencing results. miRNA expression profiling in 16HBE cells exposed to BeSO4 provides new insights into the toxicity mechanism of beryllium exposure. © 2020 John Wiley & Sons, Ltd.
语种:
英文
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我国南北两城市PM2.5主要污染物组分及来源分析
作者:
蔡颖;王荀;胡辛楠;方道奎;姜帅;...
期刊:
中华劳动卫生职业病杂志 ,2020年38(05):353-357 ISSN:1001-9391
作者机构:
421001 衡阳,南华大学公共卫生学院;518055 深圳市疾病预防控制中心环境与健康所;518172 深圳市龙岗区疾病预防控制中心;[张朝晖; 王玮; 方道奎; 徐新云; 姜帅; 蔡颖; 胡辛楠; 郑凯; 王冰玉] 421001 衡阳,南华大学公共卫生学院;518055 深圳市疾病预防控制中心环境与健康所;[王荀] 深圳市龙岗区疾病预防控制中心
关键词:
颗粒物;细颗粒物;空气污染物;金属;离子;烃类,芳香
摘要:
目的:分析我国南北两城市深圳和太原市大气细颗粒物(PM
2.5)主要成分及其污染来源。
方法:采集2017至2018年深圳和太原市空气中PM
2.5样品,用电感耦合等离子体质谱法测定铅(Pb)、铝(Al)、砷(As)等10种金属元素浓度,用离子色谱法测定氟化物(F
-)、氯化物(Cl
-)、硫酸盐(SO
42-)等10种水溶性离子浓度,用高效液相色谱法测定萘、苊烯、苊等16种多环芳烃(PAHs)浓度,用碳质分析仪测定有机碳(OC)与元素碳(EC)含量;采用因子分析法分析PM
2.5的污染来源。
结果:太原市PM
2.5样品中Pb、锰(Mn)、As、镍(Ni)、F
-、OC、EC浓度明显高于深圳市,钠盐(Na
+)、Cl
-、磷酸盐(PO
43-)浓度低于深圳市(
P<0.05);除萘外,太原市PM
2.5样品中其余PAHs浓度均高于深圳市(
P<0.05)。深圳市PM
2.5样品中金属元素与水溶性离子污染来源由工业排放/机动车尾气因子(42.64%)、建筑/土壤因子(34.22%)和海洋因子(17.93%)构成,PAHs主要来源于燃油与机动车尾气因子(38.58%)、燃煤因子(30.78%)、生物质燃烧因子(24.38%)。太原市PM
2.5样品中金属元素与水溶性离子来自建筑因子(30.26%)、燃油燃煤因子(24.58%)、二次粒子/土壤因子(22.03%)及工业因子(18.89%),PAHs主要来自燃油与机动车尾气因子(54.71%)、燃煤因子(43.54%)。
结论:深圳和太原市PM
2.5成分存在较大差异,需要进一步加强企业的环境健康管理,根据各地污染来源有针对性进行治理。
语种:
中文
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PM2.5染毒HBE细胞前后差异表达的microRNAs及其生物信息学分析
作者:
蔡颖;李闰冰;郑凯;秦双建;李柏茹;...
期刊:
癌变·畸变·突变 ,2020年32(05):355-362 ISSN:1004-616X
作者机构:
深圳市疾病预防控制中心,广东 深圳518055;南华大学公共卫生学院,湖南衡阳 421001;中南大学湘雅公共卫生学院,湖南 长沙 410078;[张朝晖] 南华大学;[徐新云; 李闰冰; 蔡颖; 李柏茹; 秦双建; 郑凯] 深圳市疾病预防控制中心
关键词:
大气细颗粒物;人支气管上皮细胞;生物信息学;信号通路
摘要:
目的:采用microRNA(miRNA)测序和生物信息学方法,分析大气细颗粒物(PM2.5)染毒人支气管上皮HBE细胞前后差异表达的miRNAs,预测差异miRNAs的生物学功能和信号转导途径。方法:用50μg/mL的PM2.5混悬液染毒HBE细胞,以未染毒组作为对照组,处理24 h后提取总RNA样品,Small RNA样品预处理试剂盒构建文库,并利用illumina HiSeqTM 2500/MiSeq测序平台进行高通量测序。以调整后P<0.05的筛选标准得到差异miRNAs,使用miRanda和RNAhybrid两个软件共同预测差异miRNAs的靶基因并进行GO和KEGG功能富集分析,利用STRING数据库和Cytoscape软件对miRNAs和靶基因及靶基因之间的相互作用关系进行可视化分析。结果:高通量测序方法共检测到PM2.5染毒前后的包含1 137个miRNAs的表达谱,27个为差异表达的miRNAs,其中7个上调,20个下调。GO和KEGG富集分析发现,这些差异miRNAs主要参与细胞代谢、酶活性调节等生物学过程,聚集于胞内如细胞质、细胞器等,涉及代谢途径、PI3K-Akt信号通路、Ras信号通路、MAPK信号通路等与细胞增殖、分化、凋亡及癌症发生等相关的重要信号通路。此外,通过构建相互作用网络图,鉴定了miR-371b-3p、miR-371a-5p、miR-27a-3p、miR-7-5p、miR-372-3p等相互作用数量前11位的核心miRNAs,以及3个核心靶基因(VEGFA、MAPK3、CCR5)。结论:PM2.5染毒HBE细胞后引起了27个miRNAs的差异表达,涉及PI3K-Akt信号通路、Ras信号通路及MAPK信号通路等与癌症发生发展相关的重要信号通路,其中筛选了11个核心miRNAs和3个核心基因,为深入研究PM2.5致癌毒理作用机制提供了实验依据。
语种:
中文
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环状RNA在不同类型上皮间质转化中的作用
作者:
刘艳萍;谭滇湘;张朝晖
期刊:
生命的化学 ,2020年40(04):574-578 ISSN:1000-1336
作者机构:
南华大学公共卫生学院, 衡阳, 421001;衡阳市中心医院麻醉科, 衡阳, 421001;[张朝晖; 刘艳萍] 南华大学;[谭滇湘] 衡阳市中心医院
关键词:
环状RNA;上皮间质转化;纤维化;肿瘤
摘要:
近年来发现环状RNA(circular RNA, circRNA)在各种类型的上皮间质转化(epithelial-mesenchymal transition,EMT)中发挥了重要的作用。本文就EMT的概念和分类、circRNA的分类和生成,以及cir-cRNA分别在EMT过程中作用的国内外研究进展作一综述,以期为发生EMT的器官纤维化、肿瘤等疾病的靶向治疗和预防寻找新的研究方向。
语种:
中文
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Alteration of DNA methylation induced by PM2.5 in human bronchial epithelial cells
作者:
Wang, Bingyu;Li, Runbing;Cai, Ying;Li, Boru;Qin, Shuangjian;...
期刊:
TOXICOLOGY RESEARCH ,2020年9(4):552-560 ISSN:2045-452X
通讯作者:
Xu, Xinyun
作者机构:
[Xu, Xinyun; Cai, Ying; Li, Runbing; Wang, Bingyu; Zheng, Kai] Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, Dept Environm Toxicol, 8 Longyuan Rd, Shenzhen 518055, Guangdong, Peoples R China.;[Zhang, Zhaohui; Cai, Ying; Qin, Shuangjian; Li, Runbing; Wang, Bingyu; Zheng, Kai; Li, Boru] Univ South China, Sch Publ Hlth, Dept Prevent Med, 28 Changsheng West Rd, Hengyang 421001, Hunan, Peoples R China.;[Qin, Shuangjian; Xiao, Fang; Zeng, Ming; Li, Boru] Cent South Univ, Xiangya Sch Publ Hlth, Dept Hlth Toxicol, 238 Shangmayuanling Lane, Changsha 410078, Hunan, Peoples R China.;[Xu, Xinyun] Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, 8 Longyuan Rd, Shenzhen 518055, Guangdong, Peoples R China.
通讯机构:
[Xu, Xinyun] S;Shenzhen Ctr Dis Control & Prevent, Inst Environm & Hlth, 8 Longyuan Rd, Shenzhen 518055, Guangdong, Peoples R China.
关键词:
PM2.5;human bronchial epithelial cells;DNA methylation;bioinformatics
摘要:
<jats:title>Abstract</jats:title>
<jats:p>This current study explored the effects of fine particulate matter (PM2.5) on deoxyribonucleic acid methylation in human bronchial epithelial cells. Human bronchial epithelial cells were exposed to PM2.5 for 24h after which, deoxyribonucleic acid samples were extracted, and the differences between methylation sites were detected using methylation chips. Subsequent gene ontology functional enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed for the differential methylation sites. Functional epigenetic modules analysis of the overall differential methylation site interactions was also conducted. A total of 127 differential methylation sites in 89 genes were screened in the PM2.5 10μg/ml group, of which 55 sites demonstrated increased methylation, with methylation levels decreasing in a further 72 sites. Following an exposure of 50μg/ml PM2.5, a total of 238 differentially methylated sites were screened in 168 genes, of which methylation levels increased in 127 sites, and decreased in 111. KEGG analysis showed that the top 10 enrichment pathways predominantly involve hepatocellular carcinoma pathways and endometrial cancer pathways, whereas functional epigenetic modules analysis screened eight genes (A2M, IL23A, TPIP6, IL27, MYD88, ILE2B, NLRC4, TNF) with the most interactions. Our results indicate that exposure to PM2.5 for 24h in human bronchial epithelial cells induces marked changes in deoxyribonucleic acid methylation of multiple genes involved in apoptosis and carcinogenesis pathways, these findings can provide a new direction for further study of PM2.5 carcinogenic biomarkers.</jats:p>
语种:
英文
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内源性硫化氢对硫酸铍诱导人支气管上皮细胞自噬的影响
作者:
李寻亚;易珊;王烨;袁小燕;蔡颖;...
期刊:
毒理学杂志 ,2019年33(3):189-193 ISSN:1002-3127
作者机构:
南华大学公共卫生学院,湖南衡阳,421001;[易珊; 张朝晖; 蔡颖; 李寻亚; 刘艳萍; 王烨; 袁小燕] 南华大学
关键词:
硫酸铍;内源性硫化氢;硫氢化钠;DL-炔丙基甘氨酸;自噬
摘要:
目的探讨内源性硫化氢(H_2S)对硫酸铍(BeSO_4 )诱导人支气管上皮细胞(16HBE)自噬的影响.方法用0、100、150、200、250和300 μmol /L BeSO_4处理16HBE细胞48 h,MTT法测定细胞活力,亚甲基蓝分光光度法测定细胞内H_2S含量,Western blot测定自噬标志蛋白LC3-B、Beclin-1及P62表达;用300 μmol /L硫氢化钠(NaHS)或10 mmol /L DL-炔丙基甘氨酸(PPG)预处理16HBE细胞6 h后,用BeSO_4处理细胞,研究H_2S含量对上述指标的影响.结果(1) BeSO_4作用16HBE细胞48 h的半数致死浓度为249 μmol /L;与对照组相比,BeSO_4组自噬蛋白LC3-II /LC3-I和Beclin-1表达升高,细胞活力、H_2S含量和P62蛋白表达降低,当BeSO_4浓度>100 μmol /L时,差异均有统计学意义(P<0.05);(2)与BeSO_4组比较,NaHS+BeSO_4组细胞活力、H_2S水平和P62蛋白表达均升高(P<0.05),LC3-II /LC3-I和Beclin-1蛋白表达有降低趋势,但差异无统计学意义;(3)与BeSO_4组比较,PPG+BeSO_4组细胞活力、H_2S水平及P62蛋白表达降低,LC3-II /LC3-I和Beclin-1蛋白表达升高(P<0.05).结论在本试验条件下,BeSO_4染毒能致16HBE细胞活力和内源性H_2S含量下降,并引起细胞自噬;内源性H_2S能抑制BeSO_4诱导的16HBE细胞自噬、减轻细胞毒性,发挥保护功能.
语种:
中文
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人HLA-DPB1基因及蛋白的生物信息学分析
作者:
易珊;廖娟;李寻亚;袁小燕;王烨;...
期刊:
基因组学与应用生物学 ,2019年38(10):4389-4394 ISSN:1674-568X
作者机构:
南华大学公共卫生学院, 衡阳, 421000;[廖娟; 易珊; 张朝晖; 李寻亚; 王烨; 袁小燕] 南华大学
关键词:
生物信息学;蛋白质结构;免疫
摘要:
HLA-DPB1是MHC区域基因编码的跨膜糖蛋白,是人类免疫系统的重要组成部分。本研究采用生物信息数据库和分析软件对人HLA-DPB1基因的结构、单核苷酸多态性位点(SNP)、蛋白的理化特性、跨膜结构域、信号肽、亚细胞定位、二级结构、三级结构、磷酸化位点、组织表达情况及蛋白相互作用网络进行预测分析。结果表明,人HLA-DPB1基因位于6号染色体,有8种可变剪接体,SNP位点132个,其中移码突变12个,同义突变33个,错义突变87个。人HLA-DPB1蛋白由258个氨基酸组成,含有一个跨膜区和一个信号肽的亲水蛋白,主要定位于细胞内。其二级结构主要元件为无规卷曲和延伸链,三级结构预测结果可信。人HLA-DPB1蛋白有18个磷酸化位点,其中丝氨酸的磷酸化位点最多。人HLA-DPB1蛋白在肺、肾上腺及骨髓等组织表达量较高,并且人HLA-DPB1蛋白存在相互作用的蛋白多数在免疫反应中起重要作用。
语种:
中文
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临床医学类学生对卫生学课程认知情况及教学满意度调查
作者:
严紫艳;梁玉凤;刘奔波;宋凤梅;张朝晖;...
期刊:
基础医学与临床 ,2019年39(4):594-598 ISSN:1001-6325
作者机构:
南华大学 公共卫生学院,湖南 衡阳,421001;[严紫艳; 张朝晖; 宋凤梅; 刘奔波; 梁玉凤; 黄波] 南华大学
关键词:
临床医学;卫生学;教学满意度;教学改革
摘要:
目的为了解临床专业预防医学教学现状,为临床专业卫生学课程的教学改革工作提供依据。方法随机选取南华大学临床医学、全科医学、口腔医学、麻醉医学、影像医学等专业的学生进行问卷调查,问卷内容包括学生对课程的认知情况、对教学设置、教学效果的评价等。结果 84.8%的学生认为有必要学习卫生学课程,85.8%的学生认为有助于今后的学习与工作,90.4%的学生认为有助于深化预防为主的观念,57.1%的学生认为本课程与临床的结合程度不够紧密。学生对理论课程中预防保健策略和措施重要性认知度最低,最感兴趣的实验内容为饮用水消毒。结论目前学生对卫生学课程教学认知度较高,但学生的学习主动性有待提高,高校应结合学生需求,积极地进行教学改革,为社会培养合格的医学人才。
语种:
中文
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社区实践提升预防医学生公共卫生服务能力初探
作者:
宋凤梅;张朝晖;黄波;曾怀才;唐艳;...
期刊:
教育教学论坛 ,2018年(1):19-20 ISSN:1674-9324
作者机构:
南华大学 公共卫生学院 预防医学系,湖南 衡阳,421001;[曾怀才; 唐艳; 贺栋梁; 张朝晖; 宋凤梅; 黄波] 南华大学
关键词:
预防医学生;医学教育;社区卫生服务;实践教学
摘要:
社区卫生服务内容的拓展决定了服务从业人员需要具备扎实的专业知识和技能外,需同时具备众多专业素养,如沟通能力、协调能力、合作能力、领导能力和极强的社会责任感等。传统医学教育手段已经难以满足预防医学生对社区卫生服务工作能力培养的需要,积极开展社区实践教学可有效提升预防医学生公共卫生服务能力,提高就业核心竞争力。
语种:
中文
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预防医学实验教学体系与实践的改革探索
作者:
黄炼;张朝晖;曾怀才;郝玉娥;李程;...
期刊:
山西医科大学学报 ,2018年20(9):765-767 ISSN:1007-6611
作者机构:
南华大学公共卫生学院预防医学与放射卫生实验中心,衡阳,421001;[曾怀才; 单晓云; 黄炼; 张朝晖; 李程; 郝玉娥] 南华大学
关键词:
预防医学;实验教学;教学改革
摘要:
预防医学实验是预防医学的重要组成部分,是增强学生实践动手能力、培养科学精神和创新能力的关键环节。南华大学公共卫生学院通过改革实验教学管理体制和实验教学内容,自主编写实验教材,组织学生参与实验准备,多种考核方式综合评价等措施,充分调动学生学习的自主性,有效培养和提高预防医学专业学生的实践能力和综合素质。
语种:
中文
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