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J Endod:细胞归巢用于内源性牙本质基质蛋白的牙髓组织工程

2018-04-15 lishiting MedSci原创

已有令人瞩目的结果显示,干细胞移植后的牙髓组织工程是可行的。尽管引人入胜,但对其临床应用依旧存在巨大障碍。已有研究显示,细胞归巢可以作为支架材料中牙本质来源生长因子的有效替代,诱导固有细胞形成牙髓样组织。这篇研究的目的是为了探讨异位动物模型应用于原位牙髓组织工程中是否在收集干细胞于空根管后会诱导牙髓样组织的形成,以及这种作用是否会被牙本质来源的生长因子所增强。

已有令人瞩目的结果显示,干细胞移植后的牙髓组织工程是可行的。尽管引人入胜,但对其临床应用依旧存在巨大障碍。已有研究显示,细胞归巢可以作为支架材料中牙本质来源生长因子的有效替代,诱导固有细胞形成牙髓样组织。这篇研究的目的是为了探讨异位动物模型应用于原位牙髓组织工程中是否在收集干细胞于空根管后会诱导牙髓样组织的形成,以及这种作用是否会被牙本质来源的生长因子所增强。

研究使用人牙齿的改良牙根模型对3种纤维蛋白(常规制作的纤维蛋白, 纤维蛋白粘合剂, 和富含生长因子的血浆[PRGF])以及自组装肽进行体内评估。根管牙本质使用EDTA处理,使用装载生长因子的支架充填牙根,并将包裹在胶原中的牙髓干细胞放置在根尖端。将构成物植入免疫受损小鼠的体内4周,随后进行组织学观察分析。对所选切片进行鉴别干扰对比,并对二次谐波产生的影像进行分析。

结果显示,常规制作的纤维蛋白和纤维蛋白粘合剂配合牙本质基质蛋白可以迁移至牙根中,并且可以观察到牙髓样组织的形成,而肽类支架则不太适合。在不考虑添加牙本质基质蛋白的情况下,PRGF可以促进组织形成。在辅以牙本质基质蛋白以及施加EDTA的测试组中,分化的成牙本质细胞样细胞的凸起伸展进入牙本质小管中,同时有新形成的胶原牙本质基质沉积。

结论:这种新的细胞归巢模型证实:纤维蛋白衍生物可作为适用的支架并且牙本质来源的蛋白可以趋化性诱导牙髓样组织的形成。

原始出处:

Widbiller M, Driesen RB, et al. Cell Homing for Pulp Tissue Engineering with Endogenous Dentin Matrix Proteins. J Endod. 2018 Mar 29. pii: S0099-2399(18)30090-6. doi: 10.1016/j.joen.2018.02.011.

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    2019-02-26 jxrzshh
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    2018-05-22 1e16d8a5m40(暂无匿称)

    学习了

    0

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    2018-05-22 1e16d8a5m40(暂无匿称)

    学习了

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1669660, encodeId=a521166966004, content=<a href='/topic/show?id=c7ca6e660ab' target=_blank style='color:#2F92EE;'>#牙髓#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67660, encryptionId=c7ca6e660ab, topicName=牙髓)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5eeb26562774, createdName=jxrzshh, createdTime=Tue Feb 26 16:52:00 CST 2019, time=2019-02-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1757092, encodeId=5b821e5709210, content=<a href='/topic/show?id=103b421e0e8' target=_blank style='color:#2F92EE;'>#基质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=74, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=42170, encryptionId=103b421e0e8, topicName=基质)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=281337296540, createdName=ms7899726347904398, createdTime=Fri Jul 13 22:52:00 CST 2018, time=2018-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=317470, encodeId=09dc31e47003, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211120/0a343dd652314c849f92187e706a0203/030af22773fe40d69835eedc02230010.jpg, createdBy=0a471975170, createdName=1e16d8a5m40(暂无匿称), createdTime=Tue May 22 08:23:35 CST 2018, time=2018-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=317468, encodeId=a80331e4689a, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20211120/0a343dd652314c849f92187e706a0203/030af22773fe40d69835eedc02230010.jpg, createdBy=0a471975170, createdName=1e16d8a5m40(暂无匿称), createdTime=Tue May 22 08:22:18 CST 2018, time=2018-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1682029, encodeId=22101682029c0, content=<a href='/topic/show?id=15593040e9a' target=_blank style='color:#2F92EE;'>#内源性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=30407, encryptionId=15593040e9a, topicName=内源性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b46b27929604, createdName=diushouji, createdTime=Mon Apr 23 03:52:00 CST 2018, time=2018-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1417173, encodeId=9a12141e173f0, content=<a href='/topic/show?id=8b72e769056' target=_blank style='color:#2F92EE;'>#组织工程#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77690, encryptionId=8b72e769056, topicName=组织工程)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c62f3243688, createdName=zhu_jun9838, createdTime=Tue Apr 17 13:52:00 CST 2018, time=2018-04-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1441894, encodeId=463b144189445, content=<a href='/topic/show?id=67526e55924' target=_blank style='color:#2F92EE;'>#牙本质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67559, encryptionId=67526e55924, topicName=牙本质)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37364903098, createdName=ms8538335253054589, createdTime=Tue Apr 17 13:52:00 CST 2018, time=2018-04-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=306193, encodeId=b69730619369, content=学习一下谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLGSUSR8zwnWWLT4FMl5XH8S58HuZslVkLsAPbXDXaliagK7TOxQfmngKibG1yrDonepCLDkcxGk8hS/0, createdBy=b8282062892, createdName=changjiu, createdTime=Mon Apr 16 06:08:18 CST 2018, time=2018-04-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=306141, encodeId=0b4330614122, content=不错的文章值得拥有, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eff51996281, createdName=1e1b8538m79(暂无匿称), createdTime=Sun Apr 15 23:03:14 CST 2018, time=2018-04-15, status=1, ipAttribution=)]
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    2018-04-16 changjiu

    学习一下谢谢

    0

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    2018-04-15 1e1b8538m79(暂无匿称)

    不错的文章值得拥有

    0

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羟丙基壳聚糖(HPCH)是壳聚糖的水溶性衍生物,由于其生物相容性和生物可降解性广泛用于组织工程和伤口愈合中。氧化石墨烯(GO)是一种碳基纳米材料,能够赋予支架所需的性能。因此,将GO整合到HPCH中可以生产基于HPCH的支架,具有更好的膨胀特性、机械强度和稳定性。本研究采用HPCH和GO作为组织工程支架材料,制备了GO含量不同(0.5,1,3和4wt。%)的羟丙基壳聚糖接枝石墨烯(HPCH-g-G

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