Biomed Mater:水凝胶可指导软骨形成与间充质干细胞的成骨

2019-09-03 不详 网络

用于软骨和软骨界面再生的水凝胶组分的理想组合是一个重大挑战,因为需要控制分化成多个谱系。需要稳定干细胞衍生的软骨细胞的表型以避免不希望的进展至末端肥大和组织矿化。由甲基化聚乙二醇(PEG),明胶和肝素(PGH)组成的新型三元混合水凝胶被设计用于指导骨髓衍生的间充质干细胞(BMSC)的软骨形成和维持其软骨表型。与甲基化明胶水凝胶(GEL)(用于软骨形成和成骨应用的常规生物链)相比,评估了水凝胶材料对

用于软骨和软骨界面再生的水凝胶组分的理想组合是一个重大挑战,因为需要控制分化成多个谱系。需要稳定干细胞衍生的软骨细胞的表型以避免不希望的进展至末端肥大和组织矿化。由甲基化聚乙二醇(PEG),明胶和肝素(PGH)组成的新型三元混合水凝胶被设计用于指导骨髓衍生的间充质干细胞(BMSC)的软骨形成和维持其软骨表型。

与甲基化明胶水凝胶(GEL)(用于软骨形成和成骨应用的常规生物链)相比,评估了水凝胶材料对BMSC对软骨形成和成骨分化的影响。将PGH和GEL水凝胶装载山羊BMSC并在体外培养6周内在软骨形成和成骨培养基中培养。PGH在体外成骨环境中没有显示出矿物质沉积的迹象。为了进一步评估材料效应,将水凝胶装载成人BMSCs和TGFβ-3,并在小鼠的皮下袋中生长超过8周。

与体外结果一致,与GEL相比,PGH具有更大的体内BMSCs诱导软骨形成的可能性,如通过软骨形成标志物的基因表达升高所证明的,支持其稳定软骨工程的潜力。与GEL相比,PGH还显示出更高百分比的GAG阳性细胞。与GEL不同,PGH水凝胶在体内表现出抗成骨作用,如通过阴性Von Kossa染色和抑制肥大和成骨标志物的基因表达所证明。由于它们的聚合物组合物本身的性质,PGH和GEL调节BMSC向下分化不同的骨软骨谱系。

因此,PGH和GEL是有希望的水凝胶,使用未分化的BMSC和分层支架设计原位再生分层的软骨界面组织,例如下颌骨髁表面。

原始出处:

Chen J, Chin A, et al., Hydrogel to guide chondrogenesis versus osteogenesis of mesenchymal stem cells for fabrication of cartilaginous tissues. Biomed Mater. 2019 Aug 30. doi: 10.1088/1748-605X/ab401f. 

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    2020-03-23 sunylz
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    2019-09-06 独孤立克

    干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦

    0

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    2019-09-05 tastas
  5. [GetPortalCommentsPageByObjectIdResponse(id=1918840, encodeId=90f1191884075, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=16, 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 23 02:00:00 CST 2020, time=2020-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1815523, encodeId=96fa1815523d2, content=<a href='/topic/show?id=ae359e231d4' target=_blank style='color:#2F92EE;'>#间充质干细#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97231, encryptionId=ae359e231d4, topicName=间充质干细)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b632500090, createdName=h.y200607_23674418, createdTime=Thu Apr 16 16:00:00 CST 2020, time=2020-04-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025324, encodeId=4544102532455, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Fri Sep 06 17:00:00 CST 2019, time=2019-09-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308065, encodeId=e715130806583, 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=26, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1352206, encodeId=bd2b1352206f6, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1461040, encodeId=896214610405e, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=31310, encryptionId=de4331310a4, topicName=凝胶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609975, encodeId=c15916099e5b6, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=)]
    2019-09-05 zhaojie88
  6. [GetPortalCommentsPageByObjectIdResponse(id=1918840, encodeId=90f1191884075, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=16, 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 23 02:00:00 CST 2020, time=2020-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1815523, encodeId=96fa1815523d2, content=<a href='/topic/show?id=ae359e231d4' target=_blank style='color:#2F92EE;'>#间充质干细#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97231, encryptionId=ae359e231d4, topicName=间充质干细)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b632500090, createdName=h.y200607_23674418, createdTime=Thu Apr 16 16:00:00 CST 2020, time=2020-04-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025324, encodeId=4544102532455, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Fri Sep 06 17:00:00 CST 2019, time=2019-09-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308065, encodeId=e715130806583, 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=26, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1352206, encodeId=bd2b1352206f6, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1461040, encodeId=896214610405e, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=31310, encryptionId=de4331310a4, topicName=凝胶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609975, encodeId=c15916099e5b6, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=)]
  7. [GetPortalCommentsPageByObjectIdResponse(id=1918840, encodeId=90f1191884075, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=16, 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 23 02:00:00 CST 2020, time=2020-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1815523, encodeId=96fa1815523d2, content=<a href='/topic/show?id=ae359e231d4' target=_blank style='color:#2F92EE;'>#间充质干细#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97231, encryptionId=ae359e231d4, topicName=间充质干细)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b632500090, createdName=h.y200607_23674418, createdTime=Thu Apr 16 16:00:00 CST 2020, time=2020-04-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025324, encodeId=4544102532455, content=干细胞是热点,但是进入临床仍然需要时间和临床疗效验证哦, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=独孤立克, createdTime=Fri Sep 06 17:00:00 CST 2019, time=2019-09-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308065, encodeId=e715130806583, 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=26, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1352206, encodeId=bd2b1352206f6, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1461040, encodeId=896214610405e, content=<a href='/topic/show?id=de4331310a4' target=_blank style='color:#2F92EE;'>#凝胶#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=31310, encryptionId=de4331310a4, topicName=凝胶)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609975, encodeId=c15916099e5b6, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, 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=Thu Sep 05 08:00:00 CST 2019, time=2019-09-05, status=1, ipAttribution=)]