Baidu
map

Nature:研究揭示肝细胞再生新机制!

2017-08-26 枫丹白露 来宝网

国际研究协作首次证明胆管细胞(上皮胆管细胞)在肝脏再生中的作用。研究结果对再生医学和抗击肝病具有重要意义。该团队的发现已发表在“自然”杂志上。



【科学家们发现了一种新的肝细胞再生机制】国际研究协作首次证明胆管细胞(上皮胆管细胞)在肝脏再生中的作用。研究结果对再生医学和抗击肝病具有重要意义。该团队的发现已发表在“自然”杂志上。

肝脏是人体能够再生的少数器官之一。在由于创伤或慢性疾病导致肝损伤的情况下,负责所有基本肝功能的主要肝细胞 -能够通过分成新的肝细胞再生。肝脏再生的刺激是医学界和研究人员的一个急性问题,但这种机制的细节以及其他类型的肝细胞是否参与新肝细胞形成的过程尚不清楚。

一个国际科学家组织使用转基因小鼠作为测试对象;在这样做时,他们设法模拟人类常见的肝损伤。实验在两个独立的转基因小鼠模型上进行,其中有意减少肝细胞分裂的能力,以评估其他肝细胞对再生的贡献。结果显示,胆管上皮细胞 - 胆管细胞参与肝细胞再生。此外,科学家们认为来自胆管细胞的肝细胞再生潜力可能高于正常肝细胞。

Skoltech教授兼翻译医学中心副主任Yuri Kotelevtsev说:“一年多以前,我遇到了爱丁堡大学的同事,共同组建科学项目,在Victor Koteliansky教授的指导下,我们设法调整肝脏基因敲低的技术,这项技术已经知道了大约七年,但其在体内的应用需要很高的实验水平,而且仍然只能在几个学术实验室获得,事实证明,Stuart Forbes教授的实验室正在解决方案中的一个问题,其中的敲击可以快速证实胆管细胞在肝脏再生中的关键作用的假设,Skoltech和MIT的贡献是我们创建并提供脂质纳米粒子与siRNA,以阻断小鼠肝细胞中该基因表达的β1整联蛋白,并将其对获得的模型的表型的观察结果允许鉴定参与肝脏再生的胆管细胞。目前,在Forbes教授的领导下,苏格兰再生医学中心正在开始工作,目的是将自体胆管细胞分离并移植到肝硬化患者身上。我们现在正在继续与Forbes教授的实验室合作。我们正在测试新的靶基因,其阻断可以预防或稳定与纤维化和随后的肝硬化相关的过程。

原始出处:

Raven Alexander, Wei-Yu Lu, Tak Yung Man, et al. Cholangiocytes Act as Facultative Liver Stem Cells during Impaired Hepatocyte Regeneration. Nature 547, no. 7663 (July 20, 2017): 350–54. DOI: 10.1038/nature23015.

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=1863298, encodeId=9a8a186329843, content=<a href='/topic/show?id=c0b68135561' target=_blank style='color:#2F92EE;'>#肝细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81355, encryptionId=c0b68135561, topicName=肝细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Sat Nov 11 06:06:00 CST 2017, time=2017-11-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1745811, encodeId=12c61e4581110, content=<a href='/topic/show?id=a38d813560b' target=_blank style='color:#2F92EE;'>#肝细胞再生#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81356, encryptionId=a38d813560b, topicName=肝细胞再生)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4e4735597828, createdName=xiongliangxl, createdTime=Sun Jan 14 14:06:00 CST 2018, time=2018-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882406, encodeId=993b1882406b3, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Mon Jun 25 17:06:00 CST 2018, time=2018-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237347, encodeId=31f423e34728, content=还好还好哈几号聚, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b0171930782, createdName=为你把脉, createdTime=Sat Aug 26 10:51:21 CST 2017, time=2017-08-26, status=1, ipAttribution=)]
    2017-11-11 xjy02
  2. [GetPortalCommentsPageByObjectIdResponse(id=1863298, encodeId=9a8a186329843, content=<a href='/topic/show?id=c0b68135561' target=_blank style='color:#2F92EE;'>#肝细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81355, encryptionId=c0b68135561, topicName=肝细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Sat Nov 11 06:06:00 CST 2017, time=2017-11-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1745811, encodeId=12c61e4581110, content=<a href='/topic/show?id=a38d813560b' target=_blank style='color:#2F92EE;'>#肝细胞再生#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81356, encryptionId=a38d813560b, topicName=肝细胞再生)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4e4735597828, createdName=xiongliangxl, createdTime=Sun Jan 14 14:06:00 CST 2018, time=2018-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882406, encodeId=993b1882406b3, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Mon Jun 25 17:06:00 CST 2018, time=2018-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237347, encodeId=31f423e34728, content=还好还好哈几号聚, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b0171930782, createdName=为你把脉, createdTime=Sat Aug 26 10:51:21 CST 2017, time=2017-08-26, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1863298, encodeId=9a8a186329843, content=<a href='/topic/show?id=c0b68135561' target=_blank style='color:#2F92EE;'>#肝细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81355, encryptionId=c0b68135561, topicName=肝细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Sat Nov 11 06:06:00 CST 2017, time=2017-11-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1745811, encodeId=12c61e4581110, content=<a href='/topic/show?id=a38d813560b' target=_blank style='color:#2F92EE;'>#肝细胞再生#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81356, encryptionId=a38d813560b, topicName=肝细胞再生)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4e4735597828, createdName=xiongliangxl, createdTime=Sun Jan 14 14:06:00 CST 2018, time=2018-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882406, encodeId=993b1882406b3, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Mon Jun 25 17:06:00 CST 2018, time=2018-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237347, encodeId=31f423e34728, content=还好还好哈几号聚, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b0171930782, createdName=为你把脉, createdTime=Sat Aug 26 10:51:21 CST 2017, time=2017-08-26, status=1, ipAttribution=)]
    2018-06-25 liye789132251
  4. [GetPortalCommentsPageByObjectIdResponse(id=1863298, encodeId=9a8a186329843, content=<a href='/topic/show?id=c0b68135561' target=_blank style='color:#2F92EE;'>#肝细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81355, encryptionId=c0b68135561, topicName=肝细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Sat Nov 11 06:06:00 CST 2017, time=2017-11-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1745811, encodeId=12c61e4581110, content=<a href='/topic/show?id=a38d813560b' target=_blank style='color:#2F92EE;'>#肝细胞再生#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=81356, encryptionId=a38d813560b, topicName=肝细胞再生)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4e4735597828, createdName=xiongliangxl, createdTime=Sun Jan 14 14:06:00 CST 2018, time=2018-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882406, encodeId=993b1882406b3, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Mon Jun 25 17:06:00 CST 2018, time=2018-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237347, encodeId=31f423e34728, content=还好还好哈几号聚, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b0171930782, createdName=为你把脉, createdTime=Sat Aug 26 10:51:21 CST 2017, time=2017-08-26, status=1, ipAttribution=)]
    2017-08-26 为你把脉

    还好还好哈几号聚

    0

相关资讯

Sci Transl Med:振奋人心!MIT科学家「种植」迷你肝,成功扩大50倍,长成具有主要功能的肝脏

慢性肝炎会带来很高的肝硬化和肝癌风险,可能会引起过早死亡。针对终末期肝病,唯一有效的治疗就是肝移植。然而,2009年资料显示,我国肝受体和肝供体的比例接近100:1[1],即大约100个需要肝移植的患者去争夺1个捐献的肝脏!

Liver Int:高尔基体蛋白73联合肝硬度检测可准确评估慢性乙肝患者的显著性肝纤维化

血清高尔基体蛋白73(GP73)是诊断肝纤维化分期的一项潜在生物学标志物。本研究的目的是建立一种基于GP73水平和肝硬度检测(LS)的算法,以进一步提高诊断显著性肝纤维化分期准确性。

Hepatology:肝纤维化分期而非非酒精性脂肪性肝炎可预测患者死亡率和发展为严重肝病的时间

在平均20年的随访中(范围:0-40),相当于13163人年,12%的NAFLD患者和2.2%的正常对照发展为严重肝病(p<0.001)。相比正常对照,严重肝病的风险随着肝纤维化分期的增加而增高。

SCI REP:糖尿病是慢性丙型肝炎患者发生肝硬化的一个重要危险因素!

总之,糖尿病与CHC患者发生肝硬化的风险增加相关。此外,在CHC和DM的患者中,女性发生肝硬化的风险增加。

BMJ:肝硬化筛查是否有必要?

最近的指导方针是建议筛查高危患者肝硬化,泰恩河畔纽卡斯尔的弗里曼医院的肝病专家马克·哈德森(Mark Hudson)和南安普敦综合医院的尼克·谢伦(Nick Sheron)说。

SCI REP:TRAF6基因变异调节肝硬化患者腹腔免疫和自发性细菌性腹膜炎的风险!

总之,TRAF6基因多态性与降低腹腔免疫激活和SBP风险增加相关。

Baidu
map
Baidu
map
Baidu
map