Biomater Sci:氧化石墨烯改性的钛支架可诱导骨再生并防止细菌感染

2018-01-30 MedSci MedSci原创

由于其独特的纳米结构和优越的物理化学特性,氧化石墨烯(GO)在生物医学应用中引起了相当大的关注。然而,将GO均匀沉积在具有良好生物相容性和在骨工程中广泛应用的化学惰性Ti支架上却困难重重。本此研究中,通过将GO沉积到聚多巴胺(PDA)修饰的Ti支架上来制备GO官能化的Ti多孔支架(GO/Ti支架)。受贻贝启发而研发的PDA修饰促进了GO和Ti表面之间的相互作用,使得Ti支架上GO均匀覆盖。将BMP

由于其独特的纳米结构和优越的物理化学特性,氧化石墨烯(GO)在生物医学应用中引起了相当大的关注。然而,将GO均匀沉积在具有良好生物相容性和在骨工程中广泛应用的化学惰性Ti支架上却困难重重。

本此研究中,通过将GO沉积到聚多巴胺(PDA)修饰的Ti支架上来制备GO官能化的Ti多孔支架(GO/Ti支架)。受贻贝启发而研发的PDA修饰促进了GO和Ti表面之间的相互作用,使得Ti支架上GO均匀覆盖。将BMP2和万古霉素(Van)分别包封在明胶微球(GelMS)中。然后,将含有药物的GelMS装配在GO/Ti支架上,并且通过GO的官能团锚定。改性的支架独立地递送具有不同生理化学性质的多个生物分子,而相互不干扰。因此,GO/Ti支架具有诱导骨再生和防止细菌感染的双重功能。

综上所述,本研究所制备的GO/Ti混合支架结合了Ti支架的良好力学性能和GO纳米片的优点。具有独特纳米结构和官能团的GO纳米片以及钛支架上的GelMS是适用于药物输送的载体,并为细胞粘附提供粘附位点,并为骨再生创造纳米结构环境。

原始出处:


Han L, Sun H, et al., Mussel-inspired graphene oxide nanosheet-enwrapped Ti scaffolds with drug-encapsulated gelatin microspheres for bone regeneration. Biomater Sci. 2018 Jan 29. doi: 10.1039/c7bm01060e.

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    2018-04-04 sunylz
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    2018-11-13 30397613
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1651542, encodeId=822a165154221, 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=37, 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=Wed Dec 19 20:28:00 CST 2018, time=2018-12-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917913, encodeId=b857191e91356, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed Apr 04 18:28:00 CST 2018, time=2018-04-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1679681, encodeId=ed9116e96816e, content=<a href='/topic/show?id=d4ac9639efa' target=_blank style='color:#2F92EE;'>#钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96397, encryptionId=d4ac9639efa, topicName=钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=927227807332, createdName=30397613, createdTime=Tue Nov 13 04:28:00 CST 2018, time=2018-11-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1706960, encodeId=bb191e06960d7, content=<a href='/topic/show?id=d2773359191' target=_blank style='color:#2F92EE;'>#化石#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33591, encryptionId=d2773359191, topicName=化石)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f4d531331396, createdName=ms7899726347904398, createdTime=Fri Mar 16 15:28:00 CST 2018, time=2018-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1280667, encodeId=56f5128066eca, content=<a href='/topic/show?id=beefe810798' target=_blank style='color:#2F92EE;'>#细菌感染#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78107, encryptionId=beefe810798, topicName=细菌感染)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6779163, createdName=liuhuangbo, createdTime=Thu Feb 01 11:28:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472110, encodeId=5aa014e21103c, content=<a href='/topic/show?id=d068101610b9' target=_blank style='color:#2F92EE;'>#骨再生#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101610, encryptionId=d068101610b9, topicName=骨再生)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a4cf7208806, createdName=lsj630, createdTime=Thu Feb 01 11:28:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=283594, encodeId=17792835947a, content=henhao, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NcXNhUvfhzd2VdicMnaLeK2Im5gKx4Ucxd8Bwu6S7RG0uILBFQx5HTW2bU4VricDYlQqN20ibASSMYAeGrZrrTpy2Q/0, createdBy=b0041939716, createdName=hhh678, createdTime=Tue Jan 30 21:03:31 CST 2018, time=2018-01-30, status=1, ipAttribution=)]
    2018-02-01 lsj630
  7. [GetPortalCommentsPageByObjectIdResponse(id=1651542, encodeId=822a165154221, 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=37, 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=Wed Dec 19 20:28:00 CST 2018, time=2018-12-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917913, encodeId=b857191e91356, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed Apr 04 18:28:00 CST 2018, time=2018-04-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1679681, encodeId=ed9116e96816e, content=<a href='/topic/show?id=d4ac9639efa' target=_blank style='color:#2F92EE;'>#钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96397, encryptionId=d4ac9639efa, topicName=钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=927227807332, createdName=30397613, createdTime=Tue Nov 13 04:28:00 CST 2018, time=2018-11-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1706960, encodeId=bb191e06960d7, content=<a href='/topic/show?id=d2773359191' target=_blank style='color:#2F92EE;'>#化石#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33591, encryptionId=d2773359191, topicName=化石)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f4d531331396, createdName=ms7899726347904398, createdTime=Fri Mar 16 15:28:00 CST 2018, time=2018-03-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1280667, encodeId=56f5128066eca, content=<a href='/topic/show?id=beefe810798' target=_blank style='color:#2F92EE;'>#细菌感染#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=78107, encryptionId=beefe810798, topicName=细菌感染)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6779163, createdName=liuhuangbo, createdTime=Thu Feb 01 11:28:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472110, encodeId=5aa014e21103c, content=<a href='/topic/show?id=d068101610b9' target=_blank style='color:#2F92EE;'>#骨再生#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101610, encryptionId=d068101610b9, topicName=骨再生)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a4cf7208806, createdName=lsj630, createdTime=Thu Feb 01 11:28:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=283594, encodeId=17792835947a, content=henhao, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NcXNhUvfhzd2VdicMnaLeK2Im5gKx4Ucxd8Bwu6S7RG0uILBFQx5HTW2bU4VricDYlQqN20ibASSMYAeGrZrrTpy2Q/0, createdBy=b0041939716, createdName=hhh678, createdTime=Tue Jan 30 21:03:31 CST 2018, time=2018-01-30, status=1, ipAttribution=)]
    2018-01-30 hhh678

    henhao

    0