Cell Death & Disease:靶向转录因子LXR治疗透明细胞肾细胞癌研究

2019-06-06 AlexYang MedSci原创

越来越多的证据表明透明细胞肾细胞癌(ccRCC)是一种代谢相关的疾病。脂肪酸(FA)和胆固醇代谢变化在ccRCC发展过程中具有重要的作用。肝X受体(LXR)是一个核转录因子受体,能够调控与FA合成和胆固醇转运相关的许多关键分子。因此,靶向LXR也许能够为ccRCC提供新的治疗靶标。然而,LXR在ccRCC中可能的调控作用和分子机制仍旧未知。最近,有研究人员发现,LXR激动剂和XLR反向激动剂能够抑

越来越多的证据表明透明细胞肾细胞癌(ccRCC)是一种代谢相关的疾病。脂肪酸(FA)和胆固醇代谢变化在ccRCC发展过程中具有重要的作用。肝X受体(LXR)是一个核转录因子受体,能够调控与FA合成和胆固醇转运相关的许多关键分子。因此,靶向LXR也许能够为ccRCC提供新的治疗靶标。然而,LXR在ccRCC中可能的调控作用和分子机制仍旧未知。

最近,有研究人员发现,LXR激动剂和XLR反向激动剂能够抑制ccRCC细胞增殖和克隆的形成,并且能够诱导凋亡。LXR激动剂LXR623能够下调低密度脂蛋白受体LDLR的表达和上调ABCA1的表达,从而导致细胞内胆固醇减少和细胞凋亡。LXR反向激动剂SR9243能够下调FA合成蛋白甾醇调节元件结合蛋白1c(SREBP-1c)、脂肪酸合成(FASN)和硬脂酰辅酶脱氢酶1(SCD1)的表达,从而引起细胞内FA含量的减少和诱导ccRCC细胞的死亡。另外,SR9243和LXR623能够诱导ccRCC细胞的死亡而对正常肾小管上皮细胞HK2没有杀伤作用。研究人员还发现了脂质流入中SRB1调节的高密度蛋白(HDL)是ccRCC细胞高胆固醇的起因。

最后,研究人员指出,他们的数据表明了LXR反向激动剂和LXR激动剂在ccRCC中能够减少细胞内FA和胆固醇含量,从而抑制肿瘤细胞。另外,它们对非肿瘤细胞没有细胞毒性作用。因此,LXR也许是治疗ccRCC患者的一种安全的治疗靶标。

原始出处:

Guangzhen Wu, Qinglian Wang, Yingkun Xu et al. Targeting the transcription factor receptor LXR to treat clear cell renal cell carcinoma: agonist or inverse agonist? Cell Death & Disease. 28 May 2019

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    2019-12-23 维他命
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    2019-08-06 mjldent
  5. [GetPortalCommentsPageByObjectIdResponse(id=1871316, encodeId=714c18e131600, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=137, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Fri Aug 09 15:24:00 CST 2019, time=2019-08-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961599, encodeId=96e619615994a, 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=c3ff68, createdName=维他命, createdTime=Mon Dec 23 09:24:00 CST 2019, time=2019-12-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1978852, encodeId=17ba19e88521b, content=<a href='/topic/show?id=3b90e79787f' target=_blank style='color:#2F92EE;'>#细胞癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77978, encryptionId=3b90e79787f, topicName=细胞癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e457184, createdName=qingting, createdTime=Fri Jan 10 22:24:00 CST 2020, time=2020-01-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1747362, encodeId=d7891e473621d, content=<a href='/topic/show?id=832e93345c3' target=_blank style='color:#2F92EE;'>#转录#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93345, encryptionId=832e93345c3, topicName=转录)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=58df35929710, createdName=mjldent, createdTime=Tue Aug 06 18:24:00 CST 2019, time=2019-08-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2013022, encodeId=47ec20130227e, content=<a href='/topic/show?id=7d69598468' target=_blank style='color:#2F92EE;'>#Dis#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5984, encryptionId=7d69598468, topicName=Dis)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c689267, createdName=cmj8wellington, createdTime=Fri Jul 05 00:24:00 CST 2019, time=2019-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531470, encodeId=338615314e02b, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, 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=Sat Jun 08 11:24:00 CST 2019, time=2019-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537489, encodeId=9990153e48922, content=<a href='/topic/show?id=798a93348bb' target=_blank style='color:#2F92EE;'>#转录因子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93348, encryptionId=798a93348bb, topicName=转录因子)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b8c712868269, createdName=lanyan20020090, createdTime=Sat Jun 08 11:24:00 CST 2019, time=2019-06-08, status=1, ipAttribution=)]
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    2019-06-08 cy0328
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