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Stem Cells Int:机械牵张可促进骨的缺损修复

2019-07-31 不详 网络

促红细胞生成素(EPO)对骨髓间充质干细胞(BMSCs)机械牵张行为的影响尚不清楚。因此,本研究旨在确定EPO刺激对大鼠骨髓间充质干细胞的剂量反应效应,并研究机械拉伸联合EPO对骨髓间充质干细胞增殖和成骨分化的影响。采用不同浓度的EPO检测大鼠骨髓间充质干细胞的增殖和成骨分化。此后,使用Flexcell菌株单元将BMSC进行10%伸长,并与20IU/ml EPO组合。通过细胞计数试剂盒-8,集落形

促红细胞生成素(EPO)对骨髓间充质干细胞(BMSCs)机械牵张行为的影响尚不清楚。因此,本研究旨在确定EPO刺激对大鼠骨髓间充质干细胞的剂量反应效应,并研究机械拉伸联合EPO对骨髓间充质干细胞增殖和成骨分化的影响。

采用不同浓度的EPO检测大鼠骨髓间充质干细胞的增殖和成骨分化。此后,使用Flexcell菌株单元将BMSC进行10%伸长,并与20IU/ml EPO组合。通过细胞计数试剂盒-8,集落形成试验和细胞周期试验检测BMSCs的增殖;同时,通过逆转录和实时定量PCR(qPCR)检测Ets-1,C-myc,Ccnd1和C-fos的mRNA表达水平。通过碱性磷酸酶(ALP)染色检测BMSCs的成骨分化,并通过qPCR检测ALP,OCN,COL和Runx2的mRNA表达水平。通过Western印迹检查细胞外信号调节激酶1/2(ERK1/2)在通过机械牵张和20IU/ml EPO刺激的BMSC的成骨中的作用。

结果显示,EPO对BMSC的作用包括剂量-反应关系,20IU/ml EPO产生最大。机械牵张结合20IU/ml EPO促进BMSCs的增殖和成骨分化。由机械牵张-EPO组合诱导的ALP,矿物质沉积和成骨细胞基因的增加被ERK1/2抑制剂U0126抑制。

综上所述,该研究结果表明,EPO能够促进BMSCs的增殖和成骨分化,并且当与机械拉伸结合时这些效果得到增强。潜在的机制可能与ERK1/2信号传导途径的激活有关。

原始出处:

He YB, Liu SY, et al., Mechanical Stretch Promotes the Osteogenic Differentiation of Bone Mesenchymal Stem Cells Induced by Erythropoietin. Stem Cells Int. 2019 Jul 7;2019:1839627. doi: 10.1155/2019/1839627. eCollection 2019.

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    2020-04-11 维他命
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1794707, encodeId=fe8a1e94707f4, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16779, encryptionId=82b416e79f5, topicName=stem cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Mon May 25 00:34:00 CST 2020, time=2020-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794973, encodeId=a5ae1e9497319, content=<a href='/topic/show?id=46e716e82a6' target=_blank style='color:#2F92EE;'>#stem cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16782, encryptionId=46e716e82a6, topicName=stem cells)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3883266, createdName=yykkxiaodou, createdTime=Mon Sep 02 07:34:00 CST 2019, time=2019-09-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961659, encodeId=9a4a196165952, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sat Apr 11 01:34:00 CST 2020, time=2020-04-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871375, encodeId=a90e18e137540, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Fri Aug 23 05:34:00 CST 2019, time=2019-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1482266, encodeId=4a0a148226677, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16778, encryptionId=8cc416e78f3, topicName=STEM)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d1067833268, createdName=12498bb3m92(暂无昵称), createdTime=Fri Aug 02 09:34:00 CST 2019, time=2019-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1615057, encodeId=212d161505ea6, content=<a href='/topic/show?id=d74a44e2e7' target=_blank style='color:#2F92EE;'>#cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4472, encryptionId=d74a44e2e7, topicName=cells)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=659819575782, createdName=124988c7m101暂无昵称, createdTime=Fri Aug 02 09:34:00 CST 2019, time=2019-08-02, status=1, ipAttribution=)]
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