Int J Mol Sci:三维石墨烯-RGD肽纳米复合材料,增强人脂肪来源的间充质干细胞的成骨作用

2019-04-30 不详 网络

石墨烯衍生物在干细胞研究中具有巨大的潜力。在这里,我们报告了三维石墨烯/精氨酸-甘氨酸-天冬氨酸(RGD)肽纳米岛复合物有效指导人类脂肪来源的间充质干细胞(ADSCs)的成骨。将胺改性的二氧化硅纳米粒子(SiNP)均匀涂覆在氧化铟锡电极(ITO)上,然后进行氧化石墨烯(GO)封装和金纳米粒子的电化学沉积。具有三支链重复RGD序列和末端半胱氨酸的RGD-MAP-C肽自组装到金纳米颗粒上,产生最终的三

石墨烯衍生物在干细胞研究中具有巨大的潜力。在这里,我们报告了三维石墨烯/精氨酸-甘氨酸-天冬氨酸(RGD)肽纳米岛复合物有效指导人类脂肪来源的间充质干细胞(ADSCs)的成骨。

将胺改性的二氧化硅纳米粒子(SiNP)均匀涂覆在氧化铟锡电极(ITO)上,然后进行氧化石墨烯(GO)封装和金纳米粒子的电化学沉积。具有三支链重复RGD序列和末端半胱氨酸的RGD-MAP-C肽自组装到金纳米颗粒上,产生最终的三维石墨烯-RGD肽纳米岛复合物。我们生成了具有各种金纳米颗粒-RGD肽簇密度的底物,发现具有最大簇数的平台最适合于ADSC粘附和扩散。值得注意的是,与其他底物相比,三维石墨烯-RGD肽纳米岛复合物在指导ADSC成骨方面也非常有效,如基因表达(碱性磷酸酶(ALP),runt相关转录因子2),酶活性(ALP)和钙沉积结果证实。诱导分化为成骨细胞的ADSC在14-21天后显示出比在典型的GO-SiNP复合物上生长时更高的钙积累,表明该平台可加速ADSC成骨细胞分化。

结果表明,三维石墨烯-RGD肽纳米岛复合物可以有效地从间充质干细胞中获得成骨细胞。

原始出处:

Kang ES, Kim DS, et al., Three-Dimensional Graphene-RGD Peptide Nanoisland Composites That Enhance the Osteogenesis of Human Adipose-Derived Mesenchymal Stem Cells. Int J Mol Sci. 2018 Feb 27;19(3). pii: E669. doi: 10.3390/ijms19030669.

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    2019-05-02 zhaojie88
  6. [GetPortalCommentsPageByObjectIdResponse(id=1651589, encodeId=ce26165158908, 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=40, 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 Feb 24 08:52:00 CST 2020, time=2020-02-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1815494, encodeId=2b25181549413, content=<a href='/topic/show?id=ae359e231d4' target=_blank style='color:#2F92EE;'>#间充质干细#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97231, encryptionId=ae359e231d4, topicName=间充质干细)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b632500090, createdName=h.y200607_23674418, createdTime=Thu Jul 18 08:52:00 CST 2019, time=2019-07-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1804532, encodeId=de0018045322c, content=<a href='/topic/show?id=a6fbe737024' target=_blank style='color:#2F92EE;'>#纳米复合材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77370, encryptionId=a6fbe737024, topicName=纳米复合材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cbcc223, createdName=cooco, createdTime=Thu Oct 03 01:52:00 CST 2019, time=2019-10-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2054534, encodeId=8ad22054534f3, content=<a href='/topic/show?id=517c42615ef' target=_blank style='color:#2F92EE;'>#复合材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=42615, encryptionId=517c42615ef, topicName=复合材料)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eq2AGzrugK9ZUjU3eJxzM901ophWib0xJDrSicy49ibWl3zB5pbDto7eoR6tnzwOiaKdbq1a8PcbYFFrw/132, createdBy=6ff22500098, createdName=ms4964546379600229, createdTime=Wed Oct 09 02:52:00 CST 2019, time=2019-10-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1352125, encodeId=636b13521255b, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, 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=Thu May 02 13:52:00 CST 2019, time=2019-05-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=365541, encodeId=2b1c365541b4, content=学习了,涨知识了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=王秀, createdTime=Tue Apr 30 23:59:25 CST 2019, time=2019-04-30, status=1, ipAttribution=)]
    2019-04-30 王秀

    学习了,涨知识了!

    0