Baidu
map

Cell Death Diff:OTULIN保护肝脏免受细胞死亡、炎症、纤维化及癌症的侵害

2020-04-17 QQY MedSci原创

OTULIN对于维持肝脏稳态是至关重要的,且M1连接的多聚泛素链可能在调节mTOR信号转导通路及肝脏代谢中发挥着重要作用。

蛋氨酸-1(M1)连接的多聚泛素链能够与LUBAC(线性泛素链装配复合物)缀合,进而控制NF-κB的激活、免疫稳态,并防止TNF(肿瘤坏死因子)诱导的细胞死亡的发生。

去泛素化酶OTULIN可以通过去除LUBAC的缀合作用来负性调控M1连接的多聚泛素信号,而OTULIN的缺乏会引起OTULIN相关的自身炎症综合症(ORAS)。然而,目前对于OTULIN调控细胞通路及生理功能的研究仍然很少。

在该研究中,研究人员发现OTULIN可以预防人和小鼠肝脏疾病的发生发展。在ORAS患者中,OTULIN缺乏症会在10-13个月后引起自发性进行性肝脂肪变。

同样的,在小鼠中,肝脏特异性的OTULIN缺失会导致新生鼠发生类似于ORAS患者的脂肪变性及肝炎。 OTULIN的缺乏会引起肝脏的代谢紊乱、细胞凋亡及炎症的发生。脂肪变性的小鼠到8周龄后会引起脂肪性肝炎、肝纤维化及恶变前肿瘤的发生,而7-12个月则发展为恶性肝细胞癌。

令人惊讶的是,对OTULIN缺陷型肝脏进行病理学分析发现其并不依赖于TNFR1信号转导通路。相反,研究人员发现OTULIN缺陷型肝脏中的脂肪性肝炎与mTOR的异常激活相关,给予雷帕霉素抑制mTOR活性后能够显著减少这些肝病的发生。

总而言之,以上的研究结果表明OTULIN对于维持肝脏稳态是至关重要的,且M1连接的多聚泛素链可能在调节mTOR信号转导通路及肝脏代谢中发挥着重要作用。

原始出处:

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 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1961966, encodeId=d931196196616, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=docwu2019, createdTime=Mon Nov 02 19:45:18 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871672, encodeId=78d118e167259, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Oct 12 23:45:18 CST 2020, time=2020-10-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029717, encodeId=2a362029e17f7, content=<a href='/topic/show?id=fe2213541ae' target=_blank style='color:#2F92EE;'>#OTULIN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13541, encryptionId=fe2213541ae, topicName=OTULIN)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIpeueeYB1kem1yfEZrSYKBdZBoqac9USf0RxIgRICBIyDn4licyiaiakNnobeCDVpvwqaWgwTNeLRHA/132, createdBy=bb5e2500127, createdName=小几洁, createdTime=Sat Jul 25 19:45:18 CST 2020, time=2020-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531577, encodeId=fc8115315e7c0, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Sun Apr 19 13:45:18 CST 2020, time=2020-04-19, status=1, ipAttribution=)]
    2020-11-02 docwu2019
  2. [GetPortalCommentsPageByObjectIdResponse(id=1961966, encodeId=d931196196616, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=docwu2019, createdTime=Mon Nov 02 19:45:18 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871672, encodeId=78d118e167259, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Oct 12 23:45:18 CST 2020, time=2020-10-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029717, encodeId=2a362029e17f7, content=<a href='/topic/show?id=fe2213541ae' target=_blank style='color:#2F92EE;'>#OTULIN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13541, encryptionId=fe2213541ae, topicName=OTULIN)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIpeueeYB1kem1yfEZrSYKBdZBoqac9USf0RxIgRICBIyDn4licyiaiakNnobeCDVpvwqaWgwTNeLRHA/132, createdBy=bb5e2500127, createdName=小几洁, createdTime=Sat Jul 25 19:45:18 CST 2020, time=2020-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531577, encodeId=fc8115315e7c0, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Sun Apr 19 13:45:18 CST 2020, time=2020-04-19, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1961966, encodeId=d931196196616, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=docwu2019, createdTime=Mon Nov 02 19:45:18 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871672, encodeId=78d118e167259, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Oct 12 23:45:18 CST 2020, time=2020-10-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029717, encodeId=2a362029e17f7, content=<a href='/topic/show?id=fe2213541ae' target=_blank style='color:#2F92EE;'>#OTULIN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13541, encryptionId=fe2213541ae, topicName=OTULIN)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIpeueeYB1kem1yfEZrSYKBdZBoqac9USf0RxIgRICBIyDn4licyiaiakNnobeCDVpvwqaWgwTNeLRHA/132, createdBy=bb5e2500127, createdName=小几洁, createdTime=Sat Jul 25 19:45:18 CST 2020, time=2020-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531577, encodeId=fc8115315e7c0, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Sun Apr 19 13:45:18 CST 2020, time=2020-04-19, status=1, ipAttribution=)]
    2020-07-25 小几洁
  4. [GetPortalCommentsPageByObjectIdResponse(id=1961966, encodeId=d931196196616, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=docwu2019, createdTime=Mon Nov 02 19:45:18 CST 2020, time=2020-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871672, encodeId=78d118e167259, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Oct 12 23:45:18 CST 2020, time=2020-10-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029717, encodeId=2a362029e17f7, content=<a href='/topic/show?id=fe2213541ae' target=_blank style='color:#2F92EE;'>#OTULIN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13541, encryptionId=fe2213541ae, topicName=OTULIN)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIpeueeYB1kem1yfEZrSYKBdZBoqac9USf0RxIgRICBIyDn4licyiaiakNnobeCDVpvwqaWgwTNeLRHA/132, createdBy=bb5e2500127, createdName=小几洁, createdTime=Sat Jul 25 19:45:18 CST 2020, time=2020-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531577, encodeId=fc8115315e7c0, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Sun Apr 19 13:45:18 CST 2020, time=2020-04-19, status=1, ipAttribution=)]
    2020-04-19 cy0328

相关资讯

J Hepatol:2型糖尿病会增加慢性肝脏疾病患者的住院率和死亡率

近期发表在J Hepatol的研究称,2型糖尿病会增加慢性肝脏疾病患者的住院率和死亡率。苏格兰代表、南安普顿糖尿病和肝病小组、苏格兰糖尿病研究网络流行病学小组的研究人员,对2004-2013年苏格兰人群进行了一项研究,从糖尿病、住院、癌症和死亡率相关电子记录中,使用国际疾病分类编码识别慢性肝脏疾病(CLD)(如酒精肝、免疫性肝脏疾病、血色病、肝细胞癌、非酒精性脂肪性肝病与病毒性肝病)。研究数据显示

AJRCCM:PiZZ纯合子相关肺疾病患者常伴有慢性肝脏疾病

α1-抗胰蛋白酶缺乏症是人类最常见的遗传性疾病之一,该病患者容易出现肝脏和肺脏损害,其在基因表型表达方面的显著异质性,在文献中也已有很好的记载,但对于那些以肺部病变为主要表现的该病患者而言,其慢性肝病的患病率、严重程度、及其与肺部病变的相互关系等,则很少为人所知。为了明确在PiZZ纯合子相关肺疾病患者中,严重的肝纤维化、以及肝硬化的发生率及其危险因素,来自英国剑桥Addenbrooke医院组织病理

Baidu
map
Baidu
map
Baidu
map