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Biomed Res Int:nHAC/PLGA支架控释BMP-2和VEGF对成骨作用的协同作用

2018-11-01 MedSci MedSci原创

组织工程骨在巨大骨缺损修复方面具有很大优势;在生长因子的诱导下,种子细胞分化为成骨细胞,支架材料逐渐降解并被新生骨代替,模拟骨再生的实际病理生理过程。然而,需要进行机制研究并进一步开发以指导元素选择和优化。 在本研究中,我们制备了血管内皮生长因子/骨形态发生蛋白-2-纳米羟基磷灰石/胶原(VEGF/BMP-2-nHAC/PLGA)支架,并接种了小鼠MC3T3-E1前成骨细胞,以检测成骨指标和

组织工程骨在巨大骨缺损修复方面具有很大优势;在生长因子的诱导下,种子细胞分化为成骨细胞,支架材料逐渐降解并被新生骨代替,模拟骨再生的实际病理生理过程。然而,需要进行机制研究并进一步开发以指导元素选择和优化。

在本研究中,我们制备了血管内皮生长因子/骨形态发生蛋白-2-纳米羟基磷灰石/胶原(VEGF/BMP-2-nHAC/PLGA)支架,并接种了小鼠MC3T3-E1前成骨细胞,以检测成骨指标和相关信号通路的激活。假设是创建一个模拟骨缺损修复的三维环境,并应用p38丝裂原活化激酶(p38)抑制剂,并将osterix shRNA转移到小鼠MC3T3-E1前成骨细胞中,以进一步研究BMP-2和VEGF之间串扰的分子机制。

结果显示:(1)BMP-2和VEGF可持续地从PLGA微球中释放。(2)nHAC/PLGA载支架占据三维多孔结构,具有优异的物理性能。(3)MC3T3-E1细胞在支架中增殖和分化良好。(4)VEGF/BMP-2载支架成骨分化相关因子表达明显高于其他组;p38抑制剂SB203580降低了osterix表达的细胞核/细胞质比率。

总之,我们制备的活性人工骨可以为MC3T3-E1细胞提供有利的生长空间,同时VEGF和BMP-2处理增强的成骨和成熟可能主要通过激活p38 MAPK通路促进osterix蛋白质核转位。

原始出处:

Ting Wang, Shu Guo, et al., Synergistic Effects of Controlled-Released BMP-2 and VEGF from nHAC/PLGAs Scaffold on Osteogenesis. Biomed Res Int. 2018; 2018: 3516463.

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    2019-04-26 venlin
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    2019-01-23 sunylz
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    2019-06-22 HNYYM
  5. [GetPortalCommentsPageByObjectIdResponse(id=1704804, encodeId=4a6c1e04804e2, content=<a href='/topic/show?id=0d28143e392' target=_blank style='color:#2F92EE;'>#PLGA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14373, encryptionId=0d28143e392, topicName=PLGA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c02c30837939, createdName=venlin, createdTime=Fri Apr 26 13:45:00 CST 2019, time=2019-04-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1642661, encodeId=6f60164266104, content=<a href='/topic/show?id=814c35e6e2' target=_blank style='color:#2F92EE;'>#BMP-2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3576, encryptionId=814c35e6e2, topicName=BMP-2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=120c22999408, createdName=12498f17m73暂无昵称, createdTime=Wed May 22 23:45:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918368, encodeId=cfac1918368d7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, 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 Jan 23 15:45:00 CST 2019, time=2019-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1634050, encodeId=f66a163405081, content=<a href='/topic/show?id=596635e549' target=_blank style='color:#2F92EE;'>#BMP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3575, encryptionId=596635e549, topicName=BMP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d95322064897, createdName=HNYYM, createdTime=Sat Jun 22 16:45:00 CST 2019, time=2019-06-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351878, encodeId=c75813518e8f1, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1368511, encodeId=b4081368511c3, content=<a href='/topic/show?id=25aa1833e88' target=_blank style='color:#2F92EE;'>#VEGF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18337, encryptionId=25aa1833e88, topicName=VEGF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80ca273, createdName=fanweitanzhen, createdTime=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609280, encodeId=6b191609280f7, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, 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=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=)]
    2018-11-03 zhaojie88
  6. [GetPortalCommentsPageByObjectIdResponse(id=1704804, encodeId=4a6c1e04804e2, content=<a href='/topic/show?id=0d28143e392' target=_blank style='color:#2F92EE;'>#PLGA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14373, encryptionId=0d28143e392, topicName=PLGA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c02c30837939, createdName=venlin, createdTime=Fri Apr 26 13:45:00 CST 2019, time=2019-04-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1642661, encodeId=6f60164266104, content=<a href='/topic/show?id=814c35e6e2' target=_blank style='color:#2F92EE;'>#BMP-2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3576, encryptionId=814c35e6e2, topicName=BMP-2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=120c22999408, createdName=12498f17m73暂无昵称, createdTime=Wed May 22 23:45:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918368, encodeId=cfac1918368d7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, 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 Jan 23 15:45:00 CST 2019, time=2019-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1634050, encodeId=f66a163405081, content=<a href='/topic/show?id=596635e549' target=_blank style='color:#2F92EE;'>#BMP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3575, encryptionId=596635e549, topicName=BMP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d95322064897, createdName=HNYYM, createdTime=Sat Jun 22 16:45:00 CST 2019, time=2019-06-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351878, encodeId=c75813518e8f1, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1368511, encodeId=b4081368511c3, content=<a href='/topic/show?id=25aa1833e88' target=_blank style='color:#2F92EE;'>#VEGF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18337, encryptionId=25aa1833e88, topicName=VEGF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80ca273, createdName=fanweitanzhen, createdTime=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609280, encodeId=6b191609280f7, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, 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=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=)]
  7. [GetPortalCommentsPageByObjectIdResponse(id=1704804, encodeId=4a6c1e04804e2, content=<a href='/topic/show?id=0d28143e392' target=_blank style='color:#2F92EE;'>#PLGA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14373, encryptionId=0d28143e392, topicName=PLGA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c02c30837939, createdName=venlin, createdTime=Fri Apr 26 13:45:00 CST 2019, time=2019-04-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1642661, encodeId=6f60164266104, content=<a href='/topic/show?id=814c35e6e2' target=_blank style='color:#2F92EE;'>#BMP-2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3576, encryptionId=814c35e6e2, topicName=BMP-2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=120c22999408, createdName=12498f17m73暂无昵称, createdTime=Wed May 22 23:45:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918368, encodeId=cfac1918368d7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, 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 Jan 23 15:45:00 CST 2019, time=2019-01-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1634050, encodeId=f66a163405081, content=<a href='/topic/show?id=596635e549' target=_blank style='color:#2F92EE;'>#BMP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3575, encryptionId=596635e549, topicName=BMP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d95322064897, createdName=HNYYM, createdTime=Sat Jun 22 16:45:00 CST 2019, time=2019-06-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351878, encodeId=c75813518e8f1, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1368511, encodeId=b4081368511c3, content=<a href='/topic/show?id=25aa1833e88' target=_blank style='color:#2F92EE;'>#VEGF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18337, encryptionId=25aa1833e88, topicName=VEGF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80ca273, createdName=fanweitanzhen, createdTime=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609280, encodeId=6b191609280f7, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, 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=Sat Nov 03 10:45:00 CST 2018, time=2018-11-03, status=1, ipAttribution=)]
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