ACS Appl Mater Interfaces:新型可注射凝胶可有效促进骨再生

2018-07-01 MedSci MedSci原创

目前,临床上对具有骨再生和抗感染双重作用的生物材料的需求日益增加。为了实现这一目标,研究人员制备了具有正电荷或负电荷的壳聚糖微球体,然后将其组装为凝胶以用于骨愈合的。将带正电的壳聚糖微球(CSM)(〜35.5μm)和带负电荷的O-羧甲基壳聚糖微球(CMCSM)(〜13.5μm)分别通过溶胀包裹和物理吸附负载骨形态发生蛋白(BMP-2)和小檗碱(Bbr),表面电荷没有明显变化。此外,我们还在体外研究

目前,临床上对具有骨再生和抗感染双重作用的生物材料的需求日益增加。为了实现这一目标,研究人员制备了具有正电荷或负电荷的壳聚糖微球体,然后将其组装为凝胶以用于骨愈合的。

将带正电的壳聚糖微球(CSM)(〜35.5μm)和带负电荷的O-羧甲基壳聚糖微球(CMCSM)(〜13.5μm)分别通过溶胀包裹和物理吸附负载骨形态发生蛋白(BMP-2)和小檗碱(Bbr),表面电荷没有明显变化。此外,我们还在体外研究了来自微球的BMP-2和Bbr的释放动力学。

结果表明,Bbr/CMCSM微球组对金黄色葡萄球菌具有较高的抗菌活性,BMP-2/CSM微球组也具有优异的细胞相容性,并且在BMP-2的协同作用下改善了骨诱导性。由Bbr/CMCSM和BMP-2/CSM组装成的凝胶组具有允许生物信号转移和组织渗透的多孔结构,并显示出明显增强的骨重建,主要归因于多孔结构的骨传导性和微球表面BMP-2生长因子的骨诱导作用。

综上所述,该研究结果表明,带相反电荷的微球及其组装的可注射凝胶具有再生和抗感染双重作用,在组织工程领域具有较大的应用前景

原始出处:

Cai B, Zou Q, et al., An injectable gel constructs with regenerative and anti-infective dual effects based on assembled chitosan microspheres. ACS Appl Mater Interfaces. 2018 Jun 28. doi: 10.1021/acsami.8b06648.

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    2018-11-20 shanyongle
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    2018-07-03 yaanren
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    2018-07-03 lishizhe
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    2018-07-03 lsj630
  6. [GetPortalCommentsPageByObjectIdResponse(id=1655882, encodeId=3ea0165588202, content=<a href='/topic/show?id=2a011829d7' target=_blank style='color:#2F92EE;'>#ACE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1829, encryptionId=2a011829d7, topicName=ACE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=635024767990, createdName=shanyongle, createdTime=Tue Nov 20 16:51:00 CST 2018, time=2018-11-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1956710, encodeId=30241956e103a, content=<a href='/topic/show?id=7647e210ac' target=_blank style='color:#2F92EE;'>#FAC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7210, encryptionId=7647e210ac, topicName=FAC)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdqq.qlogo.cn/qqapp/1103841572/B389FA68ECBF51BE2FE14093CF61F6AE/100, createdBy=eb8e2500096, createdName=夏天与十三菇凉, createdTime=Fri Feb 08 12:51:00 CST 2019, time=2019-02-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1279271, encodeId=40f812e927156, content=<a href='/topic/show?id=316d1882bc' target=_blank style='color:#2F92EE;'>#ACS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=16, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1882, encryptionId=316d1882bc, topicName=ACS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=102a153, createdName=yaanren, createdTime=Tue Jul 03 02:51:00 CST 2018, time=2018-07-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1460970, encodeId=552e14609e0eb, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=31310, encryptionId=de4331310a4, topicName=凝胶)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e09e6383467, createdName=lishizhe, createdTime=Tue Jul 03 02:51:00 CST 2018, time=2018-07-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472137, encodeId=bf9f14e213784, 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=28, 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=Tue Jul 03 02:51:00 CST 2018, time=2018-07-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=328442, encodeId=f2113284428a, content=好消息, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=82311653708, createdName=医者仁心5538, createdTime=Sun Jul 01 11:55:09 CST 2018, time=2018-07-01, status=1, ipAttribution=)]
    2018-07-01 医者仁心5538

    好消息

    0