Trends Pharmacol Sci:美发现治疗炎症性肠炎的新药——孕烷X受体

2012-05-29 刘纯 生物谷

2012年5月18日,美国国立卫生研究院国家癌症研究所Frank Gonzalez 等研究人员发表了一篇题为Pregnane X receptor as a target for treatment of inflammatory bowel disorders的科研论文,研究表明孕烷X受体很可能成为一种治疗炎症性肠炎的新药,该研究发表在最新一期的Trends  in &nbs

2012年5月18日,美国国立卫生研究院国家癌症研究所Frank Gonzalez 等研究人员发表了一篇题为Pregnane X receptor as a target for treatment of inflammatory bowel disorders的科研论文,研究表明孕烷X受体很可能成为一种治疗炎症性肠炎的新药,该研究发表在最新一期的Trends  in   Pharmacological  Sciences上。

1997年,一小段小鼠基因序列首次刊登在华盛顿大学表达基因序列标签(Washington University Expressed Sequence Tag,WUEST)数据库中,该序列即为新发现的核因子配体结合域(LBD)基因编码的一个片段。几个月后,编码小鼠受体蛋白的完整 cDNA被克隆,并根据这种受体被多种天然和合成孕烷所激活的特性命名为孕烷X受体(pregnane X receptor,PXR)。PXR属于核受体超家族中的一员(系统名:NR1I2)。

过去的研究表明,PXR是CYP3A基因表达的重要调控因子,在药物代谢过程中发挥着重要作用。但最新在小鼠上的研究发现,PXR对炎症性肠炎(inflammatory bowel disease ,IBD)有显著疗效。临床试验结果也表明了PXR对人类肠炎具有潜在的治疗效果。

关于其具体的作用机制还不是很清楚,可能是它减弱了核因子NF-κB的信号,从而导致促炎症因子的表达降低。

这表明PXR很可能成为一种治疗炎症性肠炎的新药。

补充:炎症性肠病(inflammatory bowel disease,IBD)是一组病因未明的慢性肠道炎症性疾病,指慢性非特异性溃疡性结肠炎(ulcerative colitis, UC)和克罗恩病(Crohn's disease,CD)。大约10%的结肠炎症尚不能区别是CD抑或UC,在西方国家称为不明确的结肠炎(indeterminate colitis)。

IBD的病因不明,目前认为是由多因素相互作用所致,主要包括环境、免疫以及遗传等因素. 发病机制的假设是感染、饮食等环境因素作用于遗传易感的人群,使之肠免疫反应过度亢进导致肠粘膜损伤,但目前还不清楚这种过度亢进的免疫反应是特异的抗原持续刺激抑或免疫调节异常所致。

doi.org/10.1016/j.tips.2012.03.003

PMC:
PMID:

Pregnane X receptor as a target for treatment of inflammatory bowel disorders

Jie Cheng1, Yatrik M. Shah2, Frank J. Gonzalez1,

1 Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA

2 Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109-5622, USA

Pregnane X receptor (PXR; NR1I2), a member of the nuclear receptor superfamily, has a major role in the induction of genes involved in drug transport and metabolism. Recent studies in mice have provided insight into a novel function for PXR in inflammatory bowel disease (IBD). The mechanism of the protective effect of PXR activation on IBD is not fully established, but is due in part to the attenuation of nuclear factor (NF)-κB signaling that results in lower expression of proinflammatory cytokines. Recent clinical trials with the antibiotic rifaximin, a PXR agonist in the gastrointestinal system, have revealed its potential therapeutic value in the treatment of intestinal inflammation in humans. Thus, PXR may be a novel target for IBD therapy.

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    2012-05-30 freve
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    2012-07-14 yb6560
  5. [GetPortalCommentsPageByObjectIdResponse(id=1905680, encodeId=affb1905680b3, content=<a href='/topic/show?id=2ebd1e7981a' target=_blank style='color:#2F92EE;'>#trend#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17798, encryptionId=2ebd1e7981a, topicName=trend)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ced3193, createdName=freve, createdTime=Wed May 30 02:39:00 CST 2012, time=2012-05-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1788137, encodeId=59091e881375e, content=<a href='/topic/show?id=38e014162e2' target=_blank style='color:#2F92EE;'>#Pharmacol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14162, encryptionId=38e014162e2, topicName=Pharmacol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=930e243, createdName=dingxiaobo, createdTime=Sun Apr 28 16:39:00 CST 2013, time=2013-04-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1785259, encodeId=030b1e8525918, content=<a href='/topic/show?id=51906e79a6' target=_blank style='color:#2F92EE;'>#ENDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6779, encryptionId=51906e79a6, topicName=ENDS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=82ba2500166, createdName=ms1467340776200723, createdTime=Mon Aug 27 04:39:00 CST 2012, time=2012-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1995872, encodeId=697319958e236, content=<a href='/topic/show?id=ed881120ec8' target=_blank style='color:#2F92EE;'>#MAC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11207, encryptionId=ed881120ec8, topicName=MAC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b65161, createdName=yb6560, createdTime=Sat Jul 14 10:39:00 CST 2012, time=2012-07-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1787117, encodeId=36351e871170c, content=<a href='/topic/show?id=fa03141591e' target=_blank style='color:#2F92EE;'>#Pharm#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14159, encryptionId=fa03141591e, topicName=Pharm)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8942242, createdName=jj000001, createdTime=Mon Apr 22 23:39:00 CST 2013, time=2013-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1908144, encodeId=848b190814412, content=<a href='/topic/show?id=a8d0141605e' target=_blank style='color:#2F92EE;'>#pharma#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14160, encryptionId=a8d0141605e, topicName=pharma)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sun Jan 13 05:39:00 CST 2013, time=2013-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1546977, encodeId=657e15469e7d9, content=<a href='/topic/show?id=4ef26e01766' target=_blank style='color:#2F92EE;'>#炎症性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67017, encryptionId=4ef26e01766, topicName=炎症性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=09e813968720, createdName=12498dd9m15暂无昵称, createdTime=Thu May 31 04:39:00 CST 2012, time=2012-05-31, status=1, ipAttribution=)]
    2013-04-22 jj000001
  6. [GetPortalCommentsPageByObjectIdResponse(id=1905680, encodeId=affb1905680b3, content=<a href='/topic/show?id=2ebd1e7981a' target=_blank style='color:#2F92EE;'>#trend#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17798, encryptionId=2ebd1e7981a, topicName=trend)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ced3193, createdName=freve, createdTime=Wed May 30 02:39:00 CST 2012, time=2012-05-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1788137, encodeId=59091e881375e, content=<a href='/topic/show?id=38e014162e2' target=_blank style='color:#2F92EE;'>#Pharmacol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14162, encryptionId=38e014162e2, topicName=Pharmacol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=930e243, createdName=dingxiaobo, createdTime=Sun Apr 28 16:39:00 CST 2013, time=2013-04-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1785259, encodeId=030b1e8525918, content=<a href='/topic/show?id=51906e79a6' target=_blank style='color:#2F92EE;'>#ENDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6779, encryptionId=51906e79a6, topicName=ENDS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=82ba2500166, createdName=ms1467340776200723, createdTime=Mon Aug 27 04:39:00 CST 2012, time=2012-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1995872, encodeId=697319958e236, content=<a href='/topic/show?id=ed881120ec8' target=_blank style='color:#2F92EE;'>#MAC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11207, encryptionId=ed881120ec8, topicName=MAC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b65161, createdName=yb6560, createdTime=Sat Jul 14 10:39:00 CST 2012, time=2012-07-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1787117, encodeId=36351e871170c, content=<a href='/topic/show?id=fa03141591e' target=_blank style='color:#2F92EE;'>#Pharm#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14159, encryptionId=fa03141591e, topicName=Pharm)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8942242, createdName=jj000001, createdTime=Mon Apr 22 23:39:00 CST 2013, time=2013-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1908144, encodeId=848b190814412, content=<a href='/topic/show?id=a8d0141605e' target=_blank style='color:#2F92EE;'>#pharma#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14160, encryptionId=a8d0141605e, topicName=pharma)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sun Jan 13 05:39:00 CST 2013, time=2013-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1546977, encodeId=657e15469e7d9, content=<a href='/topic/show?id=4ef26e01766' target=_blank style='color:#2F92EE;'>#炎症性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67017, encryptionId=4ef26e01766, topicName=炎症性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=09e813968720, createdName=12498dd9m15暂无昵称, createdTime=Thu May 31 04:39:00 CST 2012, time=2012-05-31, status=1, ipAttribution=)]
  7. [GetPortalCommentsPageByObjectIdResponse(id=1905680, encodeId=affb1905680b3, content=<a href='/topic/show?id=2ebd1e7981a' target=_blank style='color:#2F92EE;'>#trend#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17798, encryptionId=2ebd1e7981a, topicName=trend)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ced3193, createdName=freve, createdTime=Wed May 30 02:39:00 CST 2012, time=2012-05-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1788137, encodeId=59091e881375e, content=<a href='/topic/show?id=38e014162e2' target=_blank style='color:#2F92EE;'>#Pharmacol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14162, encryptionId=38e014162e2, topicName=Pharmacol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=930e243, createdName=dingxiaobo, createdTime=Sun Apr 28 16:39:00 CST 2013, time=2013-04-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1785259, encodeId=030b1e8525918, content=<a href='/topic/show?id=51906e79a6' target=_blank style='color:#2F92EE;'>#ENDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6779, encryptionId=51906e79a6, topicName=ENDS)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=82ba2500166, createdName=ms1467340776200723, createdTime=Mon Aug 27 04:39:00 CST 2012, time=2012-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1995872, encodeId=697319958e236, content=<a href='/topic/show?id=ed881120ec8' target=_blank style='color:#2F92EE;'>#MAC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11207, encryptionId=ed881120ec8, topicName=MAC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b65161, createdName=yb6560, createdTime=Sat Jul 14 10:39:00 CST 2012, time=2012-07-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1787117, encodeId=36351e871170c, content=<a href='/topic/show?id=fa03141591e' target=_blank style='color:#2F92EE;'>#Pharm#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14159, encryptionId=fa03141591e, topicName=Pharm)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8942242, createdName=jj000001, createdTime=Mon Apr 22 23:39:00 CST 2013, time=2013-04-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1908144, encodeId=848b190814412, content=<a href='/topic/show?id=a8d0141605e' target=_blank style='color:#2F92EE;'>#pharma#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14160, encryptionId=a8d0141605e, topicName=pharma)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sun Jan 13 05:39:00 CST 2013, time=2013-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1546977, encodeId=657e15469e7d9, content=<a href='/topic/show?id=4ef26e01766' target=_blank style='color:#2F92EE;'>#炎症性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67017, encryptionId=4ef26e01766, topicName=炎症性)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=09e813968720, createdName=12498dd9m15暂无昵称, createdTime=Thu May 31 04:39:00 CST 2012, time=2012-05-31, status=1, ipAttribution=)]