Int J Mol Sci:石墨烯诱导的成骨分化由整合素/ FAK轴介导

2019-02-01 MedSci MedSci原创

石墨烯能够促进骨生成而无需化学诱导。然而,潜在的机制仍然很大程度上未知。本研究旨在:(i)评估石墨烯支架是否能够促进体内成骨; (ii)确定整合素/FAK参与石墨烯诱导的成骨分化过程。将MSCs浸渍的石墨烯支架(n = 6)植入免疫功能不全的小鼠(28天)。或者,将MSCs接种到涂有单个石墨烯单分子层的PDMS基底上(弹性模量= 130,830和1300kPa)并在基础培养基中培养(10天)。通过

石墨烯能够促进骨生成而无需化学诱导。然而,潜在的机制仍然很大程度上未知。本研究旨在:(i)评估石墨烯支架是否能够促进体内成骨; (ii)确定整合素/FAK参与石墨烯诱导的成骨分化过程。

将MSCs浸渍的石墨烯支架(n = 6)植入免疫功能不全的小鼠(28天)。或者,将MSCs接种到涂有单个石墨烯单分子层的PDMS基底上(弹性模量= 130,830和1300kPa)并在基础培养基中培养(10天)。通过Western印迹评估随后的FAK-p397,整联蛋白,ROCK1,F-肌动蛋白,Smad p1/5,RUNX2,OCN和OPN的表达(n = 3)。作为对照,在机械转导抑制剂(echistatin,Y27632和DMH1)存在下将MSCs接种到未包被的PDMS上。

结果显示,MSC-浸渍的石墨烯支架在没有成骨诱导剂的帮助下表现出骨相关标志物(RUNX2和OPN)的阳性免疫表达。在体外,不管下面的PDMS底物的硬度如何,接种到石墨烯涂覆的PDMS底物上的MSCs表现出与仅接种到PDMS上的MSCs相比所测试的所有测试的成骨和整联蛋白/ FAK蛋白的更高表达。

因此,该研究结果表明,石墨烯通过激活机械敏感性整联蛋白/ FAK轴促进骨生成。

原始出处:

Xie H, Cao T, et al., Graphene-Induced Osteogenic Differentiation Is Mediated by the Integrin/FAK Axis. Int J Mol Sci. 2019 Jan 29;20(3). pii: E574. doi: 10.3390/ijms20030574.

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    2019-05-02 HinsMax
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  5. [GetPortalCommentsPageByObjectIdResponse(id=1651580, encodeId=449a1651580c0, content=<a href='/topic/show?id=6e78e32573c' target=_blank style='color:#2F92EE;'>#石墨烯#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73257, encryptionId=6e78e32573c, topicName=石墨烯)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db924213398, createdName=yangjxjc, createdTime=Mon Jan 13 18:33:00 CST 2020, time=2020-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1640586, encodeId=8a6c16405861c, content=<a href='/topic/show?id=78a4e22688' target=_blank style='color:#2F92EE;'>#FAK#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7226, encryptionId=78a4e22688, topicName=FAK)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1a7722667526, createdName=12498a49m67暂无昵称, createdTime=Wed Dec 25 15:33:00 CST 2019, time=2019-12-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1821386, encodeId=977818213861d, content=<a href='/topic/show?id=428a101612e7' target=_blank style='color:#2F92EE;'>#骨分化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101612, encryptionId=428a101612e7, topicName=骨分化)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/qXbLjJB4FSzhQS3C5qQFMJkqicRIJFL6zHFwwhv0I95nzA6xicevQcEica0gk4A58UkbMMriadAgTY2b7N7Yd0ZsQg/132, createdBy=910c2500152, createdName=HinsMax, createdTime=Thu May 02 00:33:00 CST 2019, time=2019-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1337529, encodeId=ea2a133e529ff, content=<a href='/topic/show?id=863f5409610' target=_blank style='color:#2F92EE;'>#成骨分化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54096, encryptionId=863f5409610, topicName=成骨分化)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eqySEUYKeYDjXJMYMrtscBNkpAnLfQZgDcdkEratcJPqS7ARJOXqllZQhCSFicErlBFbIywuoiaP0LQ/132, createdBy=012d2500132, createdName=ms5880526374914242, createdTime=Sun Feb 03 13:33:00 CST 2019, time=2019-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351992, encodeId=af2b1351992aa, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54093, encryptionId=e95954093cd, topicName=成骨)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Sun Feb 03 13:33:00 CST 2019, time=2019-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1459468, encodeId=487714594689c, content=<a href='/topic/show?id=210e5e814f2' target=_blank style='color:#2F92EE;'>#整合素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57814, encryptionId=210e5e814f2, topicName=整合素)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Sun Feb 03 13:33:00 CST 2019, time=2019-02-03, status=1, ipAttribution=)]
    2019-02-03 zhaojie88
  6. [GetPortalCommentsPageByObjectIdResponse(id=1651580, encodeId=449a1651580c0, content=<a href='/topic/show?id=6e78e32573c' target=_blank style='color:#2F92EE;'>#石墨烯#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73257, encryptionId=6e78e32573c, topicName=石墨烯)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db924213398, createdName=yangjxjc, createdTime=Mon Jan 13 18:33:00 CST 2020, time=2020-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1640586, encodeId=8a6c16405861c, content=<a href='/topic/show?id=78a4e22688' target=_blank style='color:#2F92EE;'>#FAK#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7226, encryptionId=78a4e22688, topicName=FAK)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1a7722667526, createdName=12498a49m67暂无昵称, createdTime=Wed Dec 25 15:33:00 CST 2019, time=2019-12-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1821386, encodeId=977818213861d, content=<a href='/topic/show?id=428a101612e7' target=_blank style='color:#2F92EE;'>#骨分化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101612, encryptionId=428a101612e7, topicName=骨分化)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/qXbLjJB4FSzhQS3C5qQFMJkqicRIJFL6zHFwwhv0I95nzA6xicevQcEica0gk4A58UkbMMriadAgTY2b7N7Yd0ZsQg/132, createdBy=910c2500152, createdName=HinsMax, createdTime=Thu May 02 00:33:00 CST 2019, time=2019-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1337529, encodeId=ea2a133e529ff, content=<a href='/topic/show?id=863f5409610' target=_blank style='color:#2F92EE;'>#成骨分化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54096, encryptionId=863f5409610, topicName=成骨分化)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eqySEUYKeYDjXJMYMrtscBNkpAnLfQZgDcdkEratcJPqS7ARJOXqllZQhCSFicErlBFbIywuoiaP0LQ/132, createdBy=012d2500132, createdName=ms5880526374914242, createdTime=Sun Feb 03 13:33:00 CST 2019, time=2019-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351992, encodeId=af2b1351992aa, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54093, encryptionId=e95954093cd, topicName=成骨)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Sun Feb 03 13:33:00 CST 2019, time=2019-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1459468, encodeId=487714594689c, content=<a href='/topic/show?id=210e5e814f2' target=_blank style='color:#2F92EE;'>#整合素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57814, encryptionId=210e5e814f2, topicName=整合素)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智智灵药, createdTime=Sun Feb 03 13:33:00 CST 2019, time=2019-02-03, status=1, ipAttribution=)]