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PNAS:既能抗癌又能抑制艾滋病的小分子

2015-07-29 coo 生物360

最近,马里兰大学医学院的研究人员发现了一种小分子,不仅能够治疗癌症,同时能够抑制HIV-1,这项最新的研究成果发表于PNAS上。这种化合物被称为INK128,其作用方式很可能对癌症和艾滋病都有效。INK128能抑制哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)的表达,这是一种细胞激酶,可以形成两个复合物(mTORC-1和mTORC-2),调节蛋白的信

最近,马里兰大学医学院的研究人员发现了一种小分子,不仅能够治疗癌症,同时能够抑制HIV-1,这项最新的研究成果发表于PNAS上。

这种化合物被称为INK128,其作用方式很可能对癌症和艾滋病都有效。INK128能抑制哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)的表达,这是一种细胞激酶,可以形成两个复合物(mTORC-1和mTORC-2),调节蛋白的信号翻译和转导。

研究人员首先建立了人源性小鼠模型,使小鼠能产生人源免疫细胞,同时感染HIV。当用INK128处理时,这些小鼠体内具有较低的病毒计数,并能改善免疫细胞的浓度。“这些发现表明,mTOR抑制剂理论上能进入II期临床试验,”意大利卡塔尼亚大学的病理学家Ferdinando Nicoletti说,他并没有参与这次研究。

大多数抗逆转录病毒药物靶向病毒蛋白,不幸的是,在药物的作用下,HIV会发生突变,这可能导致耐药性出现。细胞药物靶标如mTOR,突变率比病毒蛋白要低很多,而突变率低意味着产生抗药性的可能性也较低,这引起了研究人员的广泛关注。“感染耐药HIV的患者很难治疗,”Alonso Heredia说,他也是该团队的一员,“对于这些患者来说,mTOR抑制剂或许能帮上忙。”

研究人员认为,在有HIV存在的情况下,INK128可以阻断病毒表面受体CCR5的转录,其中,CCR5一旦被病毒“锁定”就可以进入免疫细胞。这种新的方法直接靶向被感染的免疫细胞。研究人员认为,在病毒插入到免疫细胞之后,INK128还能阻止HIV基因的转录,这是首个以这种方式抑制HIV。

由于INK128等mTOR抑制剂正作为抗癌药物在使用或研究,所以,INK128很可能对那些同时罹患艾滋病和癌症的病人有效。

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    2016-06-15 drwjr
  2. [GetPortalCommentsPageByObjectIdResponse(id=1855760, encodeId=5bac1855e6027, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Wed Jun 15 16:29:00 CST 2016, time=2016-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1914615, encodeId=a5941914615b8, content=<a href='/topic/show?id=84d7469559b' target=_blank style='color:#2F92EE;'>#小分子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46955, encryptionId=84d7469559b, topicName=小分子)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6105386, createdName=宋威, createdTime=Wed Jan 06 23:29:00 CST 2016, time=2016-01-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=35538, encodeId=8d4935538fa, content=赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=150, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c791638395, createdName=1dd9c1c2m03(暂无匿称), createdTime=Fri Aug 14 09:36:00 CST 2015, time=2015-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33941, encodeId=076b33941d3, content=很强大, beContent=null, objectType=article, channel=null, level=null, likeNumber=192, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a25c1635554, createdName=byzh1990, createdTime=Fri Jul 31 22:21:00 CST 2015, time=2015-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33782, encodeId=d1e033e82fe, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 13:07:00 CST 2015, time=2015-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33780, encodeId=199733e801a, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=205, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 12:39:00 CST 2015, time=2015-07-29, status=1, ipAttribution=)]
    2016-01-06 宋威
  3. [GetPortalCommentsPageByObjectIdResponse(id=1855760, encodeId=5bac1855e6027, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Wed Jun 15 16:29:00 CST 2016, time=2016-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1914615, encodeId=a5941914615b8, content=<a href='/topic/show?id=84d7469559b' target=_blank style='color:#2F92EE;'>#小分子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46955, encryptionId=84d7469559b, topicName=小分子)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6105386, createdName=宋威, createdTime=Wed Jan 06 23:29:00 CST 2016, time=2016-01-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=35538, encodeId=8d4935538fa, content=赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=150, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c791638395, createdName=1dd9c1c2m03(暂无匿称), createdTime=Fri Aug 14 09:36:00 CST 2015, time=2015-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33941, encodeId=076b33941d3, content=很强大, beContent=null, objectType=article, channel=null, level=null, likeNumber=192, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a25c1635554, createdName=byzh1990, createdTime=Fri Jul 31 22:21:00 CST 2015, time=2015-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33782, encodeId=d1e033e82fe, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 13:07:00 CST 2015, time=2015-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33780, encodeId=199733e801a, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=205, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 12:39:00 CST 2015, time=2015-07-29, status=1, ipAttribution=)]
    2015-08-14 1dd9c1c2m03(暂无匿称)

    赞一个!

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1855760, encodeId=5bac1855e6027, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Wed Jun 15 16:29:00 CST 2016, time=2016-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1914615, encodeId=a5941914615b8, content=<a href='/topic/show?id=84d7469559b' target=_blank style='color:#2F92EE;'>#小分子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46955, encryptionId=84d7469559b, topicName=小分子)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6105386, createdName=宋威, createdTime=Wed Jan 06 23:29:00 CST 2016, time=2016-01-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=35538, encodeId=8d4935538fa, content=赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=150, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c791638395, createdName=1dd9c1c2m03(暂无匿称), createdTime=Fri Aug 14 09:36:00 CST 2015, time=2015-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33941, encodeId=076b33941d3, content=很强大, beContent=null, objectType=article, channel=null, level=null, likeNumber=192, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a25c1635554, createdName=byzh1990, createdTime=Fri Jul 31 22:21:00 CST 2015, time=2015-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33782, encodeId=d1e033e82fe, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 13:07:00 CST 2015, time=2015-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33780, encodeId=199733e801a, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=205, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 12:39:00 CST 2015, time=2015-07-29, status=1, ipAttribution=)]
    2015-07-31 byzh1990

    很强大

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1855760, encodeId=5bac1855e6027, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Wed Jun 15 16:29:00 CST 2016, time=2016-06-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1914615, encodeId=a5941914615b8, content=<a href='/topic/show?id=84d7469559b' target=_blank style='color:#2F92EE;'>#小分子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46955, encryptionId=84d7469559b, topicName=小分子)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6105386, createdName=宋威, createdTime=Wed Jan 06 23:29:00 CST 2016, time=2016-01-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=35538, encodeId=8d4935538fa, content=赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=150, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c791638395, createdName=1dd9c1c2m03(暂无匿称), createdTime=Fri Aug 14 09:36:00 CST 2015, time=2015-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33941, encodeId=076b33941d3, content=很强大, beContent=null, objectType=article, channel=null, level=null, likeNumber=192, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a25c1635554, createdName=byzh1990, createdTime=Fri Jul 31 22:21:00 CST 2015, time=2015-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33782, encodeId=d1e033e82fe, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 13:07:00 CST 2015, time=2015-07-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=33780, encodeId=199733e801a, content=讲的不错!, beContent=null, objectType=article, channel=null, level=null, likeNumber=205, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=237e1636404, createdName=longjun, createdTime=Wed Jul 29 12:39:00 CST 2015, time=2015-07-29, status=1, ipAttribution=)]
    2015-07-29 longjun

    讲的不错!

    0

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    2015-07-29 longjun

    讲的不错!

    0

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美国华盛顿大学的Margarett Shnorhavorian博士和他的同事将他们的发现刊登在Cancer杂志上。治疗癌症的一些方案和措施对育龄患者会带来不利影响。例如,如果男性患者进行睾丸放疗的话可能会损害其生育能力,因为放疗会损害精子质量和数量。但有些治疗方案不止影响患者的生育能力,可能会导致患者终生不育,如子宫切除术。但同时也会有一些保护患者生育能力的治疗措施,如冷冻卵子,然后进行体外受精(

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迄今为止,几乎所有癌症都被认为是遗传学异常引起的。日前一项突破性研究表明,细胞内的蛋白质失衡也完全可以引发癌症。这项发表Oncogene杂志上的研究指出,蛋白质失衡可以作为一个有力的预后工具,帮助人们判断患者对化疗的应答,以及肿瘤是否会发生扩散。此外,这项研究也为人们开辟了治疗癌症的一条新途径。“人们投入了很大的精力进行基因组测序,认为只要拿到所有相关的遗传学信息,我们就可以预测个体的癌症风险,并

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癌症患者每服用一年的抗癌药物,个人的财务支出由1995年的54000美元到2013年升至207000美元(经通胀调整后的价格)。一部分医生支持“关注以病人为基础的基本需求,并采取切实行动”并为病人请愿。该活动迄今已超过6000人报名。Facebook同样也有一个“停止高药物成本”的呼吁。发布声明的主要作者是ayalew Tefferi博士(罗切斯特市梅奥诊所的血液学科专家)。他说:“抗癌药的价格很

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