Mater Sci Eng C Mater Biol Appl:通过谷氨酸修饰的BMP-2肽的组合体外改善磷酸钙支架成骨

2019-01-08 MedSci MedSci原创

基于α-tricalcium磷酸盐(α-TCP)的多孔支架在骨组织工程中具有优异的骨传导和骨诱导性能。此外,这些3D多孔支架可用作有效的药物递送载体。在组织工程的概念中,“药物”可以定义为药物分子或生物大分子,甚至是细胞。与空白支架相比,这些“药物”赋予了支架更多的性能。在这项研究中,我们通过将E7结构域与靶肽连接,将成骨细胞骨形态发生蛋白-2(BMP-2)衍生肽锚定到α-TCP 3D多孔支架上,

基于α-tricalcium磷酸盐(α-TCP)的多孔支架在骨组织工程中具有优异的骨传导和骨诱导性能。此外,这些3D多孔支架可用作有效的药物递送载体。在组织工程的概念中,“药物”可以定义为药物分子或生物大分子,甚至是细胞。与空白支架相比,这些“药物”赋予了支架更多的性能。

在这项研究中,我们通过将E7结构域与靶肽连接,将成骨细胞骨形态发生蛋白-2(BMP-2)衍生肽锚定到α-TCP 3D多孔支架上,构建了修饰的活性肽(E7BMP-2肽)递送系统,最终实现了修饰肽在体外持续释放和增强大鼠骨髓间充质干细胞(BMSCs)成骨分化。 α-TCP 3D多孔支架具有微孔和互连的微孔,其扩展了支架的表面积。释放试验证实,与吸收在相同α-TCP 3D多孔支架上的BMP-2蛋白质相比,构建的递送系统已经实现了长期释放,其中肽剂量可以在10天后通过BCA蛋白质测定试剂盒检测。构建的E7BMP-2肽递送系统可改善Runx2,ALP和OCN的基因表达水平来促进大鼠BMSC的成骨分化。

基于静电相互作用,E7结构域紧密结合活性BMP-2衍生肽和α-TCP 3D多孔支架,持续的E7BMP-2肽释放促进了BMSCs成骨,就像BMP-2蛋白一样,赋予了α-TCP 3D多孔支架增强体外骨诱导能力。

原始出处:

Cao Q, He Z, et al., Improvement of calcium phosphate scaffold osteogenesis in vitro via combination of glutamate-modified BMP-2 peptides. Mater Sci Eng C Mater Biol Appl. 2019 Mar;96:412-418. doi: 10.1016/j.msec.2018.11.048. Epub 2018 Nov 27.

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    2019-02-24 spoonycyy
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    2019-02-20 sunylz
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    2019-01-22 HNYYM
  5. [GetPortalCommentsPageByObjectIdResponse(id=1642667, encodeId=c879164266e3e, content=<a href='/topic/show?id=814c35e6e2' target=_blank style='color:#2F92EE;'>#BMP-2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, 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=Mon Jan 14 12:41:00 CST 2019, time=2019-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2081512, encodeId=9e5a208151294, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Sun Feb 24 21:41:00 CST 2019, time=2019-02-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918459, encodeId=37951918459ee, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, 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 Feb 20 11:41:00 CST 2019, time=2019-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1634059, encodeId=7b4e16340599d, content=<a href='/topic/show?id=596635e549' target=_blank style='color:#2F92EE;'>#BMP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, 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=Tue Jan 22 19:41:00 CST 2019, time=2019-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1767586, encodeId=a66d1e6758647, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Fri Mar 08 14:41:00 CST 2019, time=2019-03-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351945, encodeId=ee2d13519458f, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, 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=Wed Jan 09 17:41:00 CST 2019, time=2019-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569339, encodeId=22f01569339c9, content=<a href='/topic/show?id=1c562e42646' target=_blank style='color:#2F92EE;'>#修饰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27426, encryptionId=1c562e42646, topicName=修饰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=29c615505859, createdName=zhangyxzsh, createdTime=Wed Jan 09 17:41:00 CST 2019, time=2019-01-09, status=1, ipAttribution=)]
  6. [GetPortalCommentsPageByObjectIdResponse(id=1642667, encodeId=c879164266e3e, content=<a href='/topic/show?id=814c35e6e2' target=_blank style='color:#2F92EE;'>#BMP-2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, 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=Mon Jan 14 12:41:00 CST 2019, time=2019-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2081512, encodeId=9e5a208151294, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Sun Feb 24 21:41:00 CST 2019, time=2019-02-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918459, encodeId=37951918459ee, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, 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 Feb 20 11:41:00 CST 2019, time=2019-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1634059, encodeId=7b4e16340599d, content=<a href='/topic/show?id=596635e549' target=_blank style='color:#2F92EE;'>#BMP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, 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=Tue Jan 22 19:41:00 CST 2019, time=2019-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1767586, encodeId=a66d1e6758647, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Fri Mar 08 14:41:00 CST 2019, time=2019-03-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351945, encodeId=ee2d13519458f, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, 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=Wed Jan 09 17:41:00 CST 2019, time=2019-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1569339, encodeId=22f01569339c9, content=<a href='/topic/show?id=1c562e42646' target=_blank style='color:#2F92EE;'>#修饰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=27426, encryptionId=1c562e42646, topicName=修饰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=29c615505859, createdName=zhangyxzsh, createdTime=Wed Jan 09 17:41:00 CST 2019, time=2019-01-09, status=1, ipAttribution=)]
    2019-01-09 zhaojie88
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    2019-01-09 zhangyxzsh