Int Physiol J:底物硬度影响Müller细胞中CTGF蛋白表达并呈现时间依赖性

2018-08-23 cuiguizhong MedSci原创

美国休斯顿大学物理系的Davis JT和费城坦普尔大学眼科的Foster WJ近日在Int Physiol J杂志上发表了一篇研究论文,他们测试了底物硬度对视网膜Müller细胞中CTGF蛋白表达时间依赖性的影响,以及YAP / TAZ的亚细胞定位。

美国休斯顿大学物理系的Davis JT和费城坦普尔大学眼科的Foster WJ近日在Int Physiol J杂志上发表了一篇研究论文,他们测试了底物硬度对视网膜Müller细胞中CTGF蛋白表达时间依赖性的影响,以及YAP / TAZ的亚细胞定位。

在眼外伤和视网膜脱离后,视网膜的神经胶质细胞可能在随后的一个月内出现病变,这一过程称为PVR(增生性玻璃体视网膜病变)。尚无成功的治疗措施来抑制PVR。在临床研究中,蛋白质CTGF(结缔组织生长因子)与视网膜PVR和视网膜的其他纤维化疾病有关,但尚未对不同病理和视网膜神经胶质增生之间的机制联系进行研究。此外,此前研究认为CTGF与YAP / TAZ(Yes-相关蛋白和Tafazzin蛋白复合物)相关,转录调节蛋白可响应机械性质而改变亚细胞定位。

他们先前的研究发现,在软基质上生长的视网膜Müller细胞中,CTGF的mRNA显着(100倍)上调。为了研究机械特征对视网膜Müller细胞中CTGF产生的调节机制是否涉及YAP / TAZ复合物,本研究测试了底物硬度对CTGF蛋白表达时间依赖性的影响,以及YAP / TAZ的亚细胞定位。

他们使用永生化的小鼠视网膜Müller细胞系,其铺在层粘连蛋白包被的不同弹性的聚丙烯酰胺基质上。使用免疫组织化学和ELISA(酶联免疫吸附测定)等方法测定其变化。结果发现,在视网膜Müller细胞中,弹性模量与CTGF蛋白表达模式之间的关系是呈双峰的,对于硬基质上的细胞,CTGF水平上升得更快,对于在软基质上生长的细胞,CTGF水平上升得更慢。此外,YAP / TAZ的核定位直接对应于CTGF表达的峰值。

原文出处:

Davis, J.T. and W.J. Foster, Substrate Stiffness Influences the Time Dependence of CTGF Protein Expression in Muller Cells. Int Physiol J, 2018. 1(1): p. 1.

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    2019-04-25 changhe713
  3. [GetPortalCommentsPageByObjectIdResponse(id=1788865, encodeId=cc211e88865c3, content=<a href='/topic/show?id=866d1421e4c' target=_blank style='color:#2F92EE;'>#Physio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14217, encryptionId=866d1421e4c, topicName=Physio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c689267, createdName=cmj8wellington, createdTime=Tue Oct 23 07:07:00 CST 2018, time=2018-10-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2035876, encodeId=13c520358e659, content=<a href='/topic/show?id=575c1e341a8' target=_blank style='color:#2F92EE;'>#TGF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17341, encryptionId=575c1e341a8, topicName=TGF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=56ea361, createdName=changhe713, createdTime=Thu Apr 25 14:07:00 CST 2019, time=2019-04-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1783866, encodeId=f8e01e8386684, content=<a href='/topic/show?id=fc215399a1' target=_blank style='color:#2F92EE;'>#CTGF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5399, encryptionId=fc215399a1, topicName=CTGF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3860283, createdName=whmdzju, createdTime=Thu Feb 21 16:07:00 CST 2019, time=2019-02-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1532659, encodeId=91fa153265940, content=<a href='/topic/show?id=f33388695c2' target=_blank style='color:#2F92EE;'>#蛋白表达#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88695, encryptionId=f33388695c2, topicName=蛋白表达)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d79512374813, createdName=xuyu, createdTime=Sat Aug 25 13:07:00 CST 2018, time=2018-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=340423, encodeId=169c34042337, content=了解一下,谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Thu Aug 23 22:45:16 CST 2018, time=2018-08-23, status=1, ipAttribution=)]
    2019-02-21 whmdzju
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    2018-08-25 xuyu
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    2018-08-23 天地飞扬

    了解一下,谢谢分享!

    0