Theranostics:固定化钙三醇的微孔多糖多层包覆BCP复合支架可促进骨质疏松骨再生

2019-03-16 不详 网络

结合仿生涂层并将骨诱导性生物分子整合到基础骨替代物中是提高骨组织工程中成骨能力的常用策略。目前,骨质疏松症(OP)相关的成骨缺陷的潜在机制仍不清楚,很少有针对OP相关的骨再生的治疗。在本文中,我们描述了自组装聚电解质多层(PEM)薄膜涂层,其在双相磷酸钙(BCP)支架中局部固定钙三醇(Cal)以通过靶向钙感应受体(CaSR)促进骨质疏松性骨再生。对卵巢切除诱导的骨髓间充质干细胞(BMSCs)功能改

结合仿生涂层并将骨诱导性生物分子整合到基础骨替代物中是提高骨组织工程中成骨能力的常用策略。目前,骨质疏松症(OP)相关的成骨缺陷的潜在机制仍不清楚,很少有针对OP相关的骨再生的治疗。在本文中,我们描述了自组装聚电解质多层(PEM)薄膜涂层,其在双相磷酸钙(BCP)支架中局部固定钙三醇(Cal)以通过靶向钙感应受体(CaSR)促进骨质疏松性骨再生。

对卵巢切除诱导的骨髓间充质干细胞(BMSCs)功能改变,Cal的保护作用及其潜在机制进行验证。通过逐层自组装制备由透明质酸(HA)和壳聚糖(Chi)组成的PEM膜。对复合支架的形态,生长行为和药物保留能力进行了表征,并在体外和体内系统地探索了它们对骨再生的生物相容性和治疗效果。

结果显示,卵巢切除大鼠骨髓间充质干细胞(OVX-rBMSCs)的成骨分化、粘附和增殖能力均随着CaSR的不足而降低。Cal通过特异性结合CaSR结构的活性袋而有效激活这些OVX-rBMSC中的成骨,而仿生PEM涂层由于其多孔表面结构而增强了OVX-rBMSCs的增殖和粘附。 PEM涂层支架显示出Cal加载和保留的优势,特别是在较低的药物浓度下。HA/Chi PEM与Cal协同作用以改善OVX-rBMSCs的增殖、粘附和成骨,并促进OVX大鼠的临界尺寸颅骨缺损模型中的骨再生和BCP降解。

总之,该研究结果表明,基于BCP的复合支架,通过简单地结合仿生PEM涂层和Cal固定化而产生,可以在临床上有用,并且作为骨质疏松骨再生的靶向、无细胞治疗选择具有显着优势。

原始出处:

Tang Q, Hu Z, et al., Microporous polysaccharide multilayer coated BCP composite scaffolds with immobilised calcitriol promote osteoporotic bone regeneration both in vitro and in vivo. Theranostics. 2019 Jan 30;9(4):1125-1143. doi: 10.7150/thno.29566. eCollection 2019.

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    2019-12-22 海豹
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    2019-05-21 wxl882001

    了解一下

    0

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    2019-04-07 wxl882001

    了解一下

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1738942, encodeId=fba21e3894256, content=<a href='/topic/show?id=6e566913df' target=_blank style='color:#2F92EE;'>#ERA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6913, encryptionId=6e566913df, topicName=ERA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e36234488643, createdName=124988c7m106暂无昵称, createdTime=Thu Jul 04 11:10:00 CST 2019, time=2019-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2049898, encodeId=e67e204989882, content=<a href='/topic/show?id=852b1e3838b' target=_blank style='color:#2F92EE;'>#Theranos#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17383, encryptionId=852b1e3838b, topicName=Theranos)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3289320, createdName=海豹, createdTime=Sun Dec 22 20:10:00 CST 2019, time=2019-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=366565, encodeId=6771366565c5, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Tue May 21 21:36:19 CST 2019, time=2019-05-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=364271, encodeId=974b3642e19e, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Sun Apr 07 20:22:21 CST 2019, time=2019-04-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=363766, encodeId=c15b363e66c9, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Fri Mar 29 19:06:38 CST 2019, time=2019-03-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472181, encodeId=510314e21811d, 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=23, 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=Mon Mar 18 05:10:00 CST 2019, time=2019-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1592553, encodeId=a9e11592553c9, content=<a href='/topic/show?id=6dc2101853ed' target=_blank style='color:#2F92EE;'>#骨质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101853, encryptionId=6dc2101853ed, topicName=骨质)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e1d018108513, createdName=Eleven17, createdTime=Mon Mar 18 05:10:00 CST 2019, time=2019-03-18, status=1, ipAttribution=)]
    2019-03-29 wxl882001

    了解一下

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1738942, encodeId=fba21e3894256, content=<a href='/topic/show?id=6e566913df' target=_blank style='color:#2F92EE;'>#ERA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6913, encryptionId=6e566913df, topicName=ERA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e36234488643, createdName=124988c7m106暂无昵称, createdTime=Thu Jul 04 11:10:00 CST 2019, time=2019-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2049898, encodeId=e67e204989882, content=<a href='/topic/show?id=852b1e3838b' target=_blank style='color:#2F92EE;'>#Theranos#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17383, encryptionId=852b1e3838b, topicName=Theranos)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3289320, createdName=海豹, createdTime=Sun Dec 22 20:10:00 CST 2019, time=2019-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=366565, encodeId=6771366565c5, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Tue May 21 21:36:19 CST 2019, time=2019-05-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=364271, encodeId=974b3642e19e, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Sun Apr 07 20:22:21 CST 2019, time=2019-04-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=363766, encodeId=c15b363e66c9, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Fri Mar 29 19:06:38 CST 2019, time=2019-03-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472181, encodeId=510314e21811d, 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=23, 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=Mon Mar 18 05:10:00 CST 2019, time=2019-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1592553, encodeId=a9e11592553c9, content=<a href='/topic/show?id=6dc2101853ed' target=_blank style='color:#2F92EE;'>#骨质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101853, encryptionId=6dc2101853ed, topicName=骨质)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e1d018108513, createdName=Eleven17, createdTime=Mon Mar 18 05:10:00 CST 2019, time=2019-03-18, status=1, ipAttribution=)]
    2019-03-18 lsj630
  7. [GetPortalCommentsPageByObjectIdResponse(id=1738942, encodeId=fba21e3894256, content=<a href='/topic/show?id=6e566913df' target=_blank style='color:#2F92EE;'>#ERA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6913, encryptionId=6e566913df, topicName=ERA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e36234488643, createdName=124988c7m106暂无昵称, createdTime=Thu Jul 04 11:10:00 CST 2019, time=2019-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2049898, encodeId=e67e204989882, content=<a href='/topic/show?id=852b1e3838b' target=_blank style='color:#2F92EE;'>#Theranos#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17383, encryptionId=852b1e3838b, topicName=Theranos)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3289320, createdName=海豹, createdTime=Sun Dec 22 20:10:00 CST 2019, time=2019-12-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=366565, encodeId=6771366565c5, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Tue May 21 21:36:19 CST 2019, time=2019-05-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=364271, encodeId=974b3642e19e, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Sun Apr 07 20:22:21 CST 2019, time=2019-04-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=363766, encodeId=c15b363e66c9, content=了解一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6KcicAVC1MwuOgo3iaicb1Imgk1yIfnvr6oXzibcAFB6puAyNJXbzWhNuLqaFYBVRWjh7rghkvFLPxMAfD5ib3nXwVD/0, createdBy=bed21972958, createdName=wxl882001, createdTime=Fri Mar 29 19:06:38 CST 2019, time=2019-03-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472181, encodeId=510314e21811d, 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=23, 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=Mon Mar 18 05:10:00 CST 2019, time=2019-03-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1592553, encodeId=a9e11592553c9, content=<a href='/topic/show?id=6dc2101853ed' target=_blank style='color:#2F92EE;'>#骨质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101853, encryptionId=6dc2101853ed, topicName=骨质)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e1d018108513, createdName=Eleven17, createdTime=Mon Mar 18 05:10:00 CST 2019, time=2019-03-18, status=1, ipAttribution=)]
    2019-03-18 Eleven17