Baidu
map

J Biomed Mater Res A:新型水凝胶的机械和成骨性能

2018-11-17 MedSci MedSci原创

由于机械性能差,用于生物医学应用的水凝胶仅限于骨组织工程。具有强度和弹性特征的韧性水凝胶受到广泛关注,但其应用受到水凝胶降解的限制。本研究介绍了一种增强水凝胶机械性能同时确保其降解的方法。羧基葡聚糖(Dex)通过聚(ε-己内酯)(PCL)进行接枝修饰,然后通过聚乙二醇400(PEG400)交联,得到在DMSO中具有共价交联单元的凝胶。将凝胶在H2O中进行溶剂置换以诱导PCL的疏水缔合以形成非共价交

由于机械性能差,用于生物医学应用的水凝胶仅限于骨组织工程。具有强度和弹性特征的韧性水凝胶受到广泛关注,但其应用受到水凝胶降解的限制。本研究介绍了一种增强水凝胶机械性能同时确保其降解的方法。

羧基葡聚糖(Dex)通过聚(ε-己内酯)(PCL)进行接枝修饰,然后通过聚乙二醇400(PEG400)交联,得到在DMSO中具有共价交联单元的凝胶。将凝胶在H2O中进行溶剂置换以诱导PCL的疏水缔合以形成非共价交联单元。

结果显示,Dex-g-PCL水凝胶的最大应变为90%±6%,相应的应力为2.7±0.2MPa,与葡聚糖水凝胶相比明显增强(最大应变65%± 5%,相应应力为0.225±0.06 MPa)。大多数水凝胶在体内12 w后降解,仅有少量残留物。脂肪来源的干细胞(ASCs)在接种于水凝胶中14天后增殖良好。

综上所述,体外和体内血管生成以及体外成骨说明了携带ASCs的Dex-g-PCL水凝胶在血管化骨组织工程中的潜力。

原始出处:

Cai L, Li J, et al., Dextran-based hydrogel with enhanced mechanical performance via covalent and non-covalent cross-linking units carrying adipose derived stem cells towards vascularized bone tissue engineering. J Biomed Mater Res A. 2018 Nov 15. doi: 10.1002/jbm.a.36580.

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1918397, encodeId=2e58191839ee7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Tue Jun 18 21:54:00 CST 2019, time=2019-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308033, encodeId=dd47130803355, 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=59, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351905, encodeId=f8981351905ab, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1460992, encodeId=cf821460992b5, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609326, encodeId=0f8f1609326fc, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=)]
    2019-06-18 sunylz
  2. [GetPortalCommentsPageByObjectIdResponse(id=1918397, encodeId=2e58191839ee7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Tue Jun 18 21:54:00 CST 2019, time=2019-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308033, encodeId=dd47130803355, 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=59, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351905, encodeId=f8981351905ab, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1460992, encodeId=cf821460992b5, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609326, encodeId=0f8f1609326fc, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=)]
    2018-11-19 tastas
  3. [GetPortalCommentsPageByObjectIdResponse(id=1918397, encodeId=2e58191839ee7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Tue Jun 18 21:54:00 CST 2019, time=2019-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308033, encodeId=dd47130803355, 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=59, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351905, encodeId=f8981351905ab, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1460992, encodeId=cf821460992b5, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609326, encodeId=0f8f1609326fc, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=)]
    2018-11-19 zhaojie88
  4. [GetPortalCommentsPageByObjectIdResponse(id=1918397, encodeId=2e58191839ee7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Tue Jun 18 21:54:00 CST 2019, time=2019-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308033, encodeId=dd47130803355, 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=59, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351905, encodeId=f8981351905ab, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1460992, encodeId=cf821460992b5, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609326, encodeId=0f8f1609326fc, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=)]
    2018-11-19 lishizhe
  5. [GetPortalCommentsPageByObjectIdResponse(id=1918397, encodeId=2e58191839ee7, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Tue Jun 18 21:54:00 CST 2019, time=2019-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308033, encodeId=dd47130803355, 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=59, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351905, encodeId=f8981351905ab, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1460992, encodeId=cf821460992b5, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, 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=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609326, encodeId=0f8f1609326fc, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Mon Nov 19 10:54:00 CST 2018, time=2018-11-19, status=1, ipAttribution=)]
    2018-11-19 hb2008ye
Baidu
map
Baidu
map
Baidu
map