Article(id=1209139840566816858, tenantId=1146029695717560320, journalId=1189873630562394117, issueId=1209139833285505965, articleNumber=null, orderNo=null, doi=10.11855/j.issn.0577-7402.2021.07.02, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1614009600000, receivedDateStr=2021-02-23, revisedDate=1622044800000, revisedDateStr=2021-05-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1766211002722, onlineDateStr=2025-12-20, pubDate=1627401600000, pubDateStr=2021-07-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766211002722, onlineIssueDateStr=2025-12-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766211002722, creator=13701087609, updateTime=1766211002722, updator=13701087609, issue=Issue{id=1209139833285505965, tenantId=1146029695717560320, journalId=1189873630562394117, year='2021', volume='46', issue='7', pageStart='637', pageEnd='742', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1766211000986, creator=13701087609, updateTime=1766212174313, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1209144754630168707, tenantId=1146029695717560320, journalId=1189873630562394117, issueId=1209139833285505965, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1209144754630168708, tenantId=1146029695717560320, journalId=1189873630562394117, issueId=1209139833285505965, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=643, endPage=650, ext={EN=ArticleExt(id=1209139841527312487, articleId=1209139840566816858, tenantId=1146029695717560320, journalId=1189873630562394117, language=EN, title=Small molecules efficiently ameliorate cellular senescence in aged mesenchymal stem cells, columnId=1190310110212751762, journalTitle=Medical Journal of Chinese People’s Liberation Army, columnName=Basic Research, runingTitle=null, highlight=null, articleAbstract=
Objective To construct a complete chemical culture system based on small molecule compounds and study its role in promoting the reversal of senescence of mesenchymal stem cells (MSCs). Methods MSCs were transmitted to 20 generations (P20) continuously. The model of the replicative aging cells (P20-MSCs) was established, then divided into aging model group and small molecule treatment group, and the fifth generation of umbilical cord MSCs (P5-MSCs) was set as control group. The aging model group and control group were cultured in the whole chemical culture system for 7 days, and small molecular treatment group was cultured in the whole chemical culture system containing valproate and Repsox for 7 days. β-galactosidase staining was used to detect cell senescence, immunofluorescence staining was used to detect the protein expression levels of Ki-67, OCT4, Nanog,P16, and P21; RT-qPCR to detect the mRNA expression levels of OCT4, Nanog, P16 and P21. Flow cytometry was used to detect the anti-apoptotic ability of cells. Migration experiments, Transwell invasion experiments and clone formation experiments to detect small molecules effects on migration, invasion and self-cloning functions of senescent MSCs. Results The cell bodies of senescent mesenchymal stem cells were enlarged and presented dendritic processes. After incubation in the full chemical culture system, the cells return to a spindle shape or irregular triangle similar to young MSCs. SA-β-gal staining results showed that compared with aging model group, the positive rate of galactosidase in cells treated with small molecules was significantly reduced, and the difference was statistically significant (45.00%±1.23% vs. 84.80%±1.50%, P<0.001). The immunofluorescence results showed that compared with aging model group, the proportion of positive cells expressing Ki-67, OCT4 and Nanog increased (Ki-67: 89.00%±1.50%vs. 25.00%±2.00%, P<0.001; OCT4: 88.40%±0.80% vs. 25.40%±1.20%, P<0.001; Nanog: 76.30%±1.70% vs. 10.50%±0.60%,P<0.001), the proportion of positive cells expressing P16, P21 decreased (P16: 64.00%±3.20% vs. 98.00%±1.50%, P<0.05; P21:45.00%±1.10% vs. 82.00%±2.00%, P<0.05) in small molecule treatment group. RT-qPCR results showed that compared with aging model group, small molecule compounds could up-regulate the mRNA expression levels of OCT4 and Nanog in aging MSCs(P<0.001), down-regulate the mRNA expression levels of P16 and P21 (P<0.05). Compared with aging model group, the abilities of anti-apoptosis (21.60%±1.20% vs. 31.40%±0.80%), migration (49.30%±3.30% vs. 30.60%±4.40%), invasion [(90.00±12.00)cells vs. (34.00±9.00) cells] and self-cloning abilities [(144.00±10.00) cells vs. (68.00±7.00) cells] in small molecule treatment group were significantly increased, and the differences were statistically significant (P<0.05 or P<0.01). Conclusion The constructed small molecule full chemical culture system can inhibit and partially reverse the aging process of long-term cultured MSCs in vitro.
, correspAuthors=Xiao-Yan Sun, Xu Wu, authorNote=null, correspAuthorsNote=
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目的 构建基于小分子化合物的全化学培养体系,探讨其在间充质干细胞(MSCs)复制性衰老过程中的作用。方法 年轻MSCs连续传至20代(P20),建立复制性衰老细胞模型(P20-MSCs),将P20-MSCs分为衰老模型组与小分子处理组,取第5代脐带MSCs(P5-MSCs)作为对照组。衰老模型组与对照组于全化学培养体系中培养,小分子处理组于含丙戊酸、Repsox的全化学培养体系中培养,均培养7 d。采用β-半乳糖苷酶(SA-β-gal)染色检测细胞衰老程度;免疫荧光染色观察细胞中Ki-67、OCT4、Nanog、P16、P21蛋白的表达情况;RT-qPCR检测OCT4、Nanog、P16、P21 mRNA的相对表达量;采用流式细胞术检测细胞凋亡情况;采用划痕实验、Transwell侵袭实验和克隆形成实验检测小分子化合物对衰老MSCs迁移、侵袭和克隆形成能力的影响。结果 光学显微镜下观察显示,衰老MSCs体积增大,胞质呈现凸起增多现象。小分子全化学培养体系孵育后细胞恢复为梭形或不规则三角形,与年轻MSCs相似。SA-β-gal染色结果显示,与衰老模型组相比,经小分子处理后细胞SA-β-gal染色阳性率降低,差异有统计学意义(45.00%±1.23%vs. 84.80%±1.50%,P<0.001)。免疫荧光染色显示,与衰老模型组相比,小分子处理组中Ki-67、OCT4、Nanog阳性细胞百分比增高(Ki-67:89.00%±1.50% vs. 25.00%±2.00%,P<0.001;OCT4:88.40%±0.80% vs. 25.40%±1.20%,P<0.001;Nanog:76.30%±1.70% vs. 10.50%±0.60%,P<0.001),P16、P21阳性细胞百分比降低(P16:64.00%±3.20% vs.98.00%±1.50%,P<0.05;P21:45.00%±1.10% vs. 82.00%±2.00%,P<0.05)。RT-qPCR检测结果显示,与衰老模型组相比,小分子化合物可上调OCT4、Nanog mRNA在老化MSCs中的表达(P<0.001),下调P16、P21 mRNA在老化MSCs中的表达(P<0.05)。与衰老模型组相比,小分子处理组细胞的抗凋亡能力(21.60%±1.20% vs. 31.40%±0.80%)、迁移能力(49.30%±3.30% vs. 30.60%±4.40%)、侵袭能力[(90.00±12.00)个 vs. (34.00±9.00)个]和克隆形成能力[(144.00±10.00)个vs. (68.00±7.00)个]均明显提升,差异有统计学意义(P<0.05或P<0.01)。结论 构建的小分子全化学培养体系能够抑制并部分逆转体外长期培养的MSCs的衰老进程。
, correspAuthors=孙晓艳, 吴旭, authorNote=null, correspAuthorsNote=
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13: 4265-4274., articleTitle=Valproic acid addresses neuroendocrine differentiation of LNCaP cells and maintains cell survival, refAbstract=null)], funds=[Fund(id=1209139851186794899, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, awardId=81671905, language=EN, fundingSource=National Natural Science Foundation of China(81671905), fundOrder=null, country=null), Fund(id=1209139851266486677, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, awardId=81671905, language=CN, fundingSource=国家自然科学基金(81671905), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1209139844131975406, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, xref=null, ext=[AuthorCompanyExt(id=1209139844136169711, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, companyId=1209139844131975406, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China), AuthorCompanyExt(id=1209139844144558320, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, companyId=1209139844131975406, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=南方医科大学南方医院胸外科,广州 510515)])], figs=[ArticleFig(id=1209139848372416871, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.1, caption=
Effects of small molecule compounds on the morphology of MSCs, figureFileSmall=6lqQ2o8zCCd5wM4xuZ61fA==, figureFileBig=WQggygV29cuPJa8KAP4Zew==, tableContent=null), ArticleFig(id=1209139848473080169, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图1, caption=
显微镜下观察小分子化合物对MSCs形态的影响A. 对照组;B. 衰老模型组;C. 小分子处理组
, figureFileSmall=6lqQ2o8zCCd5wM4xuZ61fA==, figureFileBig=WQggygV29cuPJa8KAP4Zew==, tableContent=null), ArticleFig(id=1209139848666018157, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.2, caption=
Effects of small molecule compounds on the senescence of MSCs (β-galactosidase staining), figureFileSmall=ZPFDGDmwwsNFxiw147dVWg==, figureFileBig=I40N1vU5pQ2UdlQQuw7XfA==, tableContent=null), ArticleFig(id=1209139848770875760, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图2, caption=
小分子化合物对MSCs衰老的影响(SA-β-gal染色)SA-β-gal. β-半乳糖苷酶;与对照组比较,(1)P<0.001;与衰老模型组比较,(2)P<0.001。
, figureFileSmall=ZPFDGDmwwsNFxiw147dVWg==, figureFileBig=I40N1vU5pQ2UdlQQuw7XfA==, tableContent=null), ArticleFig(id=1209139848846373235, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.3, caption=
Effects of small molecule compounds on the apoptosis of MSCs (Flow cytometry), figureFileSmall=YPaK4VTaKzyKRpFLdnYCbg==, figureFileBig=YdYct0OsBh1fvyTleLn52w==, tableContent=null), ArticleFig(id=1209139848909287798, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图3, caption=
流式细胞术检测小分子化合物对MSCs凋亡的影响与对照组比较,(1)P<0.05;与衰老模型组比较,(2)P<0.05。
, figureFileSmall=YPaK4VTaKzyKRpFLdnYCbg==, figureFileBig=YdYct0OsBh1fvyTleLn52w==, tableContent=null), ArticleFig(id=1209139848993173881, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.4, caption=
Effects of small molecule compounds on the proliferation of MSCs (Immunofluorescence staining), figureFileSmall=RhtEaC5cImUm/8YEfNlDyA==, figureFileBig=fQGYYx8DV+L2FYc1afdiaA==, tableContent=null), ArticleFig(id=1209139849064477051, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图4, caption=
小分子化合物对MSCs增殖的影响(免疫荧光染色)与衰老模型组比较,(1)P<0.001。
, figureFileSmall=RhtEaC5cImUm/8YEfNlDyA==, figureFileBig=fQGYYx8DV+L2FYc1afdiaA==, tableContent=null), ArticleFig(id=1209139849119003006, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.5, caption=
Effects of small molecule compounds on the mRNA expressions of cellular senescence genes P16, P21 and cell stem genes OCT4, Nanog of MSCs, figureFileSmall=c54gkDQ2ebZ5AgHrwM2FfA==, figureFileBig=YTb19Q0hf5IldRCK06TBvQ==, tableContent=null), ArticleFig(id=1209139850301796736, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图5, caption=
小分子化合物对MSCs衰老相关基因P16、P21及干性相关基因OCT4、Nanog mRNA表达的影响(RT-qPCR)与衰老模型组比较,(1)P<0.05,(2)P<0.001。
, figureFileSmall=c54gkDQ2ebZ5AgHrwM2FfA==, figureFileBig=YTb19Q0hf5IldRCK06TBvQ==, tableContent=null), ArticleFig(id=1209139850398265729, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.6, caption=
Effects of small molecule compounds on the expressions of cellular senescence proteins P16, P21 and cell stem proteins OCT4, Nanog of MSCs (Immunofluorescence staining), figureFileSmall=czyBe7Y9VAWDENzWZuE2vw==, figureFileBig=dqdv9ydvsC8RBvWT4SABog==, tableContent=null), ArticleFig(id=1209139850486346115, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图6, caption=
小分子化合物对MSCs衰老相关蛋白P16、P21及干性相关蛋白OCT4、Nanog表达的影响(免疫荧光染色)A. 免疫荧光染色检测衰老相关蛋白P16的表达;B. 免疫荧光染色检测衰老相关蛋白P21的表达;C. 免疫荧光染色检测干性相关蛋白OCT4的表达;D. 免疫荧光染色检测干性相关蛋白Nanog的表达;与衰老模型组比较,(1)P<0.05,(2)P<0.001。
, figureFileSmall=czyBe7Y9VAWDENzWZuE2vw==, figureFileBig=dqdv9ydvsC8RBvWT4SABog==, tableContent=null), ArticleFig(id=1209139850570232197, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.7, caption=
Effects of small molecule compounds on cell migration ability of MSCs detected by migration experiment, figureFileSmall=xcGcLW9NvL0pwXzqF8mNYQ==, figureFileBig=TTaE/Q3TaygkEQ29Ne8E8Q==, tableContent=null), ArticleFig(id=1209139850649923975, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图7, caption=
划痕实验检测小分子化合物对MSCs迁移能力的影响与对照组比较,(1)P<0.05;与衰老模型组比较,(2)P<0.01。
, figureFileSmall=xcGcLW9NvL0pwXzqF8mNYQ==, figureFileBig=TTaE/Q3TaygkEQ29Ne8E8Q==, tableContent=null), ArticleFig(id=1209139850708644233, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.8, caption=
Effects of small molecule compounds on cell invasion ability of MSCs (Transwell), figureFileSmall=nwxeug+8bgnVFbO0Qey8RA==, figureFileBig=uFg1OlAuuNaIrHvVJ7cuNw==, tableContent=null), ArticleFig(id=1209139850800918923, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图8, caption=
小分子化合物对MSCs侵袭能力的影响(Transwell)与对照组比较,(1)P<0.05;与衰老模型组比较,(2)P<0.05。
, figureFileSmall=nwxeug+8bgnVFbO0Qey8RA==, figureFileBig=uFg1OlAuuNaIrHvVJ7cuNw==, tableContent=null), ArticleFig(id=1209139850880610702, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Fig.9, caption=
Effects of small molecules on the clone forming ability of MSCs, figureFileSmall=P/HwolnrDcbhfr85W0TfSA==, figureFileBig=k5HnZQUivGkwBHHNE2deGg==, tableContent=null), ArticleFig(id=1209139850947719566, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=图9, caption=
小分子化合物对MSCs克隆形成能力的影响与对照组比较,(1)P<0.05;与衰老模型组比较,(2)P<0.001。
, figureFileSmall=P/HwolnrDcbhfr85W0TfSA==, figureFileBig=k5HnZQUivGkwBHHNE2deGg==, tableContent=null), ArticleFig(id=1209139851002245519, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=EN, label=Tab.1, caption=
Primer sequences of RT-qPCR
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基因 | 引物序列(5'-3') |
|---|
| β-actin | 正向:CATGTACGTTGCTATCCAGGC |
| 反向:CATGTACGTTGCTATCCAGGC |
| P16 | 正向:GATCCAGGTGGGTAGAAGGTC |
| 反向:CCCCTGCAAACTTCGTCCT |
| P21 | 正向:TGTCCGTCAGAACCCATGC |
| 反向:AAAGTCGAAGTTCCATCGCTC |
| OCT4 | 正向:CTGGGTTGATCCTCGGACCT |
| 反向:CCATCGGAGTTGCTCTCCA |
| Nanog | 正向:TTTGTGGGCCTGAAGAAAACT |
| 反向:AGGGCTGTCCTGAATAAGCAG |
), ArticleFig(id=1209139851077742993, tenantId=1146029695717560320, journalId=1189873630562394117, articleId=1209139840566816858, language=CN, label=表1, caption=
RT-qPCR引物序列
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基因 | 引物序列(5'-3') |
|---|
| β-actin | 正向:CATGTACGTTGCTATCCAGGC |
| 反向:CATGTACGTTGCTATCCAGGC |
| P16 | 正向:GATCCAGGTGGGTAGAAGGTC |
| 反向:CCCCTGCAAACTTCGTCCT |
| P21 | 正向:TGTCCGTCAGAACCCATGC |
| 反向:AAAGTCGAAGTTCCATCGCTC |
| OCT4 | 正向:CTGGGTTGATCCTCGGACCT |
| 反向:CCATCGGAGTTGCTCTCCA |
| Nanog | 正向:TTTGTGGGCCTGAAGAAAACT |
| 反向:AGGGCTGTCCTGAATAAGCAG |
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