文献类型：期刊文献

中文题名：黄芪多糖对甲醛染毒人骨髓间充质干细胞DNA损伤的保护作用

英文题名：Protective effect of Astragulus polysaccharide on DNA damage in human BM-MSCs exposed to formaldehyde

作者：舍雅莉[1,2];刘永琦[1,2];孙少伯[1,2];赵翊[1,2];李威[1,2];赵腾蛟[1,2];李亚玲[1,2]

第一作者：舍雅莉

机构：[1]甘肃中医药大学甘肃省高校重大疾病分子医学与中医药防治研究省级重点实验室,甘肃兰州730000;[2]甘肃中医药大学敦煌医学与转化省部共建教育部重点实验室,甘肃兰州730000

第一机构：甘肃中医药大学科研实验中心（甘肃省中医药标准化技术委员会秘书处）

年份：2019

卷号：50

期号：12

起止页码：2928

中文期刊名：中草药

外文期刊名：Chinese Traditional and Herbal Drugs

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金资助项目(81560667);甘肃省自然科学基金资助项目(1506RJZA045)

语种：中文

中文关键词：黄芪多糖;甲醛;骨髓间充质干细胞;DNA损伤;DNA修复

外文关键词：astragalus polysaccharide;formaldehyde;bone marrow mesenchymal stem cells;DNA damage;DNA repair

摘要：目的研究黄芪多糖(APS)对甲醛染毒人骨髓间充质干细胞(BM-MSCs)DNA损伤的保护作用及潜在机制。方法体外培养人BM-MSCs,随机分为对照组、模型组(甲醛)和APS 40、100、400 μg/mL组。利用MTT法检测细胞增殖活性,彗星实验检测DNA断裂,KCl-SDS沉淀实验检测DNA-蛋白交联(DPCs),qRT-PCR和Western blotting检测着色性干皮病基因A(XPA)、着色性干皮病基因C(XPC)、DNA修复切除修复交叉互补基因1(ERCC1)、复制蛋白A1(RPA1)、复制蛋白A2(RPA2)mRNA和蛋白表达水平。结果与模型组比较,APS 40、100、400 μg/mL作用后,细胞增殖活性显著升高(P<0.01),DNA断裂和DPCs形成显著减少(P<0.01),XPA、XPC、ERCC1、RPA1、RPA2 mRNA和蛋白表达水平显著升高(P<0.05、0.01),其中APS 100 μg/mL组效果最明显。结论 APS可以保护甲醛诱导的人BM-MSCs DNA损伤,APS 100 μg/mL保护作用最为明显,其机制可能与上调XPA、XPC、ERCC1、RPA1和RPA2基因表达,促进DNA修复有关。
Objective To study the protective effect of Astragalus Polysaccharide (APS) on DNA damage in human BM-MSCs exposed to formaldehyde and to initially explore the potential mechanism. Methods BM-MSCs were cultured in vitro and divided into control group, formaldehyde group, and APS at 40, 100, and 400 μg/mL groups. Proliferation activity was measured by MTT assay, DNA strand breakage was detected by comet assay, DNA-protein crosslinks (DPCs) was detected by KCl-SDS precipitation assay, and the mRNA and protein expression of XPA, XPC, ERCC1, RPA1 and RPA2 were detected by qRT-PCR and Western blotting. Results Compared with model group, formaldehyde-contaminated BM-MSCs were treated with APS at 40, 100, and 400 μg/mL, the cell proliferation activity was increased significantly (P < 0.01), DNA strand breakage and DPCs level were decreased significantly (P < 0.01), and the mRNA and protein expression of XPA, XPC, ERCC1, RPA1, and RPA2 were up-regulated significantly (P < 0.05, 0.01). Among them, the effect of 100 μg/mL APS group was the most obvious. Conclusion APS can protect formaldehyde-induced BM-MSCs DNA damage, especially 100 μg/mL APS has the most obvious effect. The mechanism may be associated with the up-regulation of XPA, XPC, ERCC1, RPA1, and RPA2, which promoted the repair of DNA damage.