Biomed Mater:羟基磷灰石改性水凝胶可有效促进骨再生

2019-05-19 不详 网络

水凝胶的强度难以满足骨缺损的修复要求,因此,具有更高机械性能的冷冻凝胶被开发为更适合的候选者。鉴于天然骨组织的有机-无机组合物,羟基磷灰石(HA)被设想为蛋白质冷冻凝胶的良好添加剂以获得仿生组合物,另外,作为增强冷冻凝胶的机械性质的优异增强剂。在该研究中,合成甲基丙烯酸化明胶(GelMA)并制造相应的3D结构冷冻凝胶,然后掺入不同量的HA纳米线(HANW)作为增强剂。结果表明,GelMA / HA

水凝胶的强度难以满足骨缺损的修复要求,因此,具有更高机械性能的冷冻凝胶被开发为更适合的候选者。鉴于天然骨组织的有机-无机组合物,羟基磷灰石(HA)被设想为蛋白质冷冻凝胶的良好添加剂以获得仿生组合物,另外,作为增强冷冻凝胶的机械性质的优异增强剂。

在该研究中,合成甲基丙烯酸化明胶(GelMA)并制造相应的3D结构冷冻凝胶,然后掺入不同量的HA纳米线(HANW)作为增强剂。结果表明,GelMA / HANW复合冷冻凝胶具有高度多孔结构,HANWs均匀分布。随着HANW含量的增加,复合冷冻凝胶的抗压强度和机械稳定性得到改善。这些复合冷冻凝胶也无细胞毒性,能够支持细胞增殖并促进骨间充质基质细胞的成骨分化。更重要的是,其多孔结构允许细胞在基质内迁移,这通常难以在GelMA水凝胶中实现。

综上所述,凭借改进的性能,GelMA/HANW复合冷冻凝胶因此可能成为一种新型的骨修复材料。

原始出处:

Gu L, Zhang J, et al., Hydroxyapatite nanowire composited gelatin cryogel with improved mechanical properties and cell migration for bone regeneration. Biomed Mater. 2019 Apr 29;14(4):045001. doi: 10.1088/1748-605X/ab1583.

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    2020-03-09 sunylz
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    2019-05-21 tastas
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    2019-05-21 lishizhe
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    2019-05-21 lsj630
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1918693, encodeId=c44319186936f, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Mon Mar 09 07:47:00 CST 2020, time=2020-03-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308053, encodeId=e873130805343, content=<a href='/topic/show?id=edd364149bc' target=_blank style='color:#2F92EE;'>#水凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64149, encryptionId=edd364149bc, topicName=水凝胶)], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=47c5349, createdName=tastas, createdTime=Tue May 21 05:47:00 CST 2019, time=2019-05-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1461024, encodeId=9b92146102415, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, 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 May 21 05:47:00 CST 2019, time=2019-05-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472193, encodeId=68d914e21930c, 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=32, 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 May 21 05:47:00 CST 2019, time=2019-05-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609782, encodeId=03be1609e82ab, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Tue May 21 05:47:00 CST 2019, time=2019-05-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1622161, encodeId=6d271622161f2, content=<a href='/topic/show?id=f41b8000867' target=_blank style='color:#2F92EE;'>#羟基磷灰石#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=80008, encryptionId=f41b8000867, topicName=羟基磷灰石)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=395f25, createdName=爆笑小医, createdTime=Tue May 21 05:47:00 CST 2019, time=2019-05-21, status=1, ipAttribution=)]