J Dent Res:自装载肽P11-4能够抑制牙本质胶原蛋白水解

2019-01-14 lishiting MedSci原创

牙齿修复的主要目标是开发一种纯粹的再生方法,以完全恢复龋损部位的羟基磷灰石结晶。近期,一项合理的自装载肽P11-4 (Ace-QQRFEWEFEQQ-NH2)设计得以问世,它能增强最初龋损的再矿化,然而它对牙本质的作用还未可知。因此,这篇研究的目的是为了评估P11-4与牙本质成分的相互作用,以及P11-4对蛋白水解活性、粘接界面的机械特质和施加人造龋牙本质的微渗漏影响。

牙齿修复的主要目标是开发一种纯粹的再生方法,以完全恢复龋损部位的羟基磷灰石结晶。近期,一项合理的自装载肽P11-4 (Ace-QQRFEWEFEQQ-NH2)设计得以问世,它能增强最初龋损的再矿化,然而它对牙本质的作用还未可知。因此,这篇研究的目的是为了评估P11-4与牙本质成分的相互作用,以及P11-4对蛋白水解活性、粘接界面的机械特质和施加人造龋牙本质的微渗漏影响。

表面等离子共振和原子力显微镜观察显示,P11-4与I型胶原纤维相黏连,它们的宽度从214 ± 4 nm增加到308 ± 5 nm ( P < 0.0001)。P11-4也能增强I型胶原纤维抵抗胶原酶的蛋白水解活性。对施加人造龋的牙本质实施P11-4的即刻治疗可以增强粘接界面的微拉伸粘接强度( P < 0.0001),并且强度接近完整牙本质,同时减少了嵌合层的蛋白水解活性;然而,这种作用在水浴存放6个月后明显降低( P < 0.05)。

结论:P11-4与I型胶原蛋白相互作用,增加胶原蛋白纤维抵抗蛋白水平作用的能力,并且可以改善因人造龋作用引起牙本质表面形成的嵌合层的稳定性。

原始出处:

de Sousa JP, Carvalho RG, et al. The Self-Assembling Peptide P11-4 Prevents Collagen Proteolysis in Dentin. J Dent Res. 2019 Jan 5:22034518817351. doi: 10.1177/0022034518817351.

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  3. [GetPortalCommentsPageByObjectIdResponse(id=1441926, encodeId=367b1441926e1, 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=32, 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=Wed Jan 16 11:23:00 CST 2019, time=2019-01-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1485708, encodeId=4fc41485e0826, content=<a href='/topic/show?id=8f0c840392a' target=_blank style='color:#2F92EE;'>#胶原蛋白#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84039, encryptionId=8f0c840392a, topicName=胶原蛋白)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=11fc8038511, createdName=12498e5fm14(暂无昵称), createdTime=Wed Jan 16 11:23:00 CST 2019, time=2019-01-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=358218, encodeId=a37e35821859, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Tue Jan 15 15:04:38 CST 2019, time=2019-01-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=358146, encodeId=3c593581460e, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=82311653708, createdName=医者仁心5538, createdTime=Mon Jan 14 21:17:34 CST 2019, time=2019-01-14, status=1, ipAttribution=)]
    2019-01-15 明月清辉

    谢谢分享,学习了

    0

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    2019-01-14 医者仁心5538

    学习了

    0