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PNAS:科学家找到诱导癌细胞“自我毁灭”的新方法!

2017-07-25 佚名 来宝网

范德比尔特大学的研究人员发现,强大的分子可以“搭乘”丰富的人类蛋白“车”,指导癌细胞进行自我毁灭,完整的研究报告发表于《美国国家科学院院刊》杂志中。

范德比尔特大学的研究人员发现,强大的分子可以“搭乘”丰富的人类蛋白“车”,指导癌细胞进行自我毁灭,完整的研究报告发表于《美国国家科学院院刊》杂志中。

他们的研究帮助肿瘤学家克服了耐药性,毒性,和其他基因疗法所带来的问题,特别是对三阴性乳腺癌患者来说,更是看到了成功的希望,三阴性乳腺癌是一种攻击性很强的癌症类型,约占乳腺癌总人数的15 %—20%。

研究人员表示:“专门的核糖核酸利用人类蛋白质,顺利完成任务。”核醣核酸酸虽然可以控制癌细胞的行为,但是他们需要一个载体来让他们的目标。因此,研究团队做了一个简单的修改,他们使用一个携带核糖核酸分子—siRNA-L2,并让它快速加载到一个白蛋白中,他们发现siRNA-L2使用白蛋白为载体,没有明显剂量限定毒性,这是纳米粒子合成的一个重要问题,这意味着更高剂量的抗癌药物可以交付给肿瘤,而且不会潜在的伤害病人。

研究人员指出:“之所以选择使用白蛋白,是因为蛋白质在人体血液中浓度最高,我们的分子—siRNA-L2可以结合到脂肪酸白蛋白的口袋里。如果我们把核直接进入身体,不搭载载体,那么肾脏在两分钟内就将其清除。因此,我们需要加载合成纳米粒子来避免这种情况的发生,白蛋白在人体内会循环数天,这就足够使siRNA-L2分子交付药物给更多的癌细胞。”

原始出处:
Samantha M. Saretta, Thomas A. Werfela, Linus Leea, et al.Lipophilic siRNA targets albumin in situ and promotes bioavailability, tumor penetration, and carrier-free gene silencing.PNAS (2017). www.pnas.org/cgi/doi/10.1073/pnas.1621240114

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    2017-11-19 drwjr
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    2017-07-27 yxch36
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    2017-07-25 往日如昨

    继续学习中谢谢

    0

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    2017-07-25 清风拂面

    谢谢分享,学习了

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1903251, encodeId=c1cf19032516a, content=<a href='/topic/show?id=e1b0583884b' target=_blank style='color:#2F92EE;'>#新方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58388, encryptionId=e1b0583884b, topicName=新方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c22f171, createdName=kord1982, createdTime=Fri Mar 02 18:44:00 CST 2018, time=2018-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1856032, encodeId=26cb18560323b, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Sun Nov 19 16:44:00 CST 2017, time=2017-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252307, encodeId=3065125230ef2, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Thu Jul 27 00:44:00 CST 2017, time=2017-07-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226201, encodeId=3ef022620154, content=继续学习中谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c0a61971598, createdName=往日如昨, createdTime=Tue Jul 25 16:48:41 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226155, encodeId=af44226155df, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=125, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM4o2XVpJ6449yqDsjibydI5HnJ8MibGxNn4HZiaZib0bdfibbwoz3KQrIyN9AGxq36ZlZRNicYlPfOOWMtwgsajY6mGNFiaPclFdowjD0/0, createdBy=97bd1338592, createdName=清风拂面, createdTime=Tue Jul 25 12:24:45 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226137, encodeId=a69c22613e7a, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/24/df6c94c647a03bde8d77b50c4fb4d531.jpg, createdBy=c84e2076847, createdName=159****9725, createdTime=Tue Jul 25 11:34:18 CST 2017, time=2017-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=226127, encodeId=0a1122612e4e, content=学习了谢谢了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLPeNmuNF9ibgMfMOAs7Iic5MpiaU8RLmRH67xCKuk5wzfhb7G4ib7ia6z9lrnsTicj1nAUfEOMecZDtvvu/0, createdBy=d7f91939785, createdName=186****0580(小山羊), createdTime=Tue Jul 25 10:24:28 CST 2017, time=2017-07-25, status=1, ipAttribution=)]
    2017-07-25 159****9725

    学习了

    0

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    2017-07-25 186****0580(小山羊)

    学习了谢谢了。

    0

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