PLoS Pathog:科学家通过重建免疫系统有望将HIV彻底击败!

2017-10-13 sunshine2015 来宝网

改进以前的尝试,科学家已经制定了一个新的策略,可能被用来重建病人本身的免疫系统细胞来对付艾滋病毒。在PLOS病原体中描述的方法在人细胞培养物和小鼠中显示出益处。

重组免疫系统细胞表现出早期对抗HIV的潜力】改进以前的尝试,科学家已经制定了一个新的策略,可能被用来重建病人本身的免疫系统细胞来对付艾滋病毒。在PLOS病原体中描述的方法在人细胞培养物和小鼠中显示出益处。

被称为T细胞的白细胞在免疫系统对HIV感染的反应中起重要作用,特别是如果患者停止服用通常使疾病控制的抗逆转录病毒药物。然而,艾滋病毒有几种可以用来逃避T细胞攻击的策略。因此,一些研究人员提出重新设计病人自己的T细胞来更有效地对抗艾滋病毒。

过去曾多次尝试重新设计T细胞来抗击艾滋病毒,包括使其进行临床检测的一种方法。然而,至今一个还没有成功,并足以广泛使用。现在,宾夕法尼亚大学佩雷尔曼医学院博士研究生雷切尔曼(Rachel Leibman)的新尝试显示了希望。

新技术建立在早期的方法基础上,临床试验依赖于嵌合抗原受体(CAR) - 一种合成蛋白,当加入T细胞时,可以更有效地对抗具体的敌人。在治疗中,从患者血液中提取的T细胞将在实验室中重新设计,以表达HIV特异性CAR,然后注入患者以对抗病毒。 (其他基于CAR的技术可以成功增强某些癌细胞的T细胞侵袭。)

利用CAR技术的最新进展,Leibman和她的同事们增强了先前已经进行临床检测的CAR蛋白。蛋白质由几个不同的部分组成,科学家逐一调整,以优化其性能。他们发现,表达新CAR的T细胞比原始CAR在预防实验室中人体细胞之间病毒传播的效率高出50倍以上。

研究人员还测试了感染艾滋病毒的小鼠中的新CAR。他们发现,重新设计以表达新的CAR的小鼠T细胞可以保护小鼠中的其他T细胞免受HIV的攻击和消耗。在接受抗逆转录病毒治疗的小鼠中,重新设计的T细胞在治疗停止后延迟了病毒的反弹。

这些发现可以为使用新型增强型CAR的T细胞再造的临床测试铺平道路。如果成功,在没有抗逆转录病毒治疗的情况下,这种方法可能会使艾滋病毒受到控制。

作者解释说:“我们的数据显示,在没有抗生素治疗的情况下,工程化T细胞可以显着控制病毒反弹。 “我们的下一步是将这一概念推向诊所。”

原始出处:

Leibman RS, Richardson MW, Ellebrecht CT, et al. (2017) Supraphysiologic control over HIV-1 replication mediated by CD8 T cells expressing a re-engineered CD4-based chimeric antigen receptor. PLoS Pathog 13(10): e1006613. doi.org/10.1371/journal.ppat.1006613.

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  1. [GetPortalCommentsPageByObjectIdResponse(id=258366, encodeId=432b25836627, content=学习一下很不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/11/23/ac01daf0962458a9eb8c0b1e2f6ce5bc.jpg, createdBy=04b81710322, createdName=1771ae4158m, createdTime=Fri Nov 03 16:14:45 CST 2017, time=2017-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=256909, encodeId=fbfa256909ab, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3da1990174, createdName=yfjms, createdTime=Sun Oct 29 09:43:42 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=256166, encodeId=cddc25616631, content=谢谢分享.有点意思, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Thu Oct 26 18:13:25 CST 2017, time=2017-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=254064, encodeId=d5d525406402, content=不错的.学习了.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Wed Oct 18 16:22:19 CST 2017, time=2017-10-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253276, encodeId=43f82532e621, content=学习学习.了解了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Mon Oct 16 06:20:46 CST 2017, time=2017-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253206, encodeId=978d2532063d, content=学习并分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Oct 15 21:21:32 CST 2017, time=2017-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253059, encodeId=17d2253059e6, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3da1990174, createdName=yfjms, createdTime=Sun Oct 15 08:13:52 CST 2017, time=2017-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=252726, encodeId=5a20252e2618, content=学习学习.继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Sat Oct 14 06:40:16 CST 2017, time=2017-10-14, status=1, ipAttribution=)]
    2017-11-03 1771ae4158m

    学习一下很不错

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=258366, encodeId=432b25836627, content=学习一下很不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/11/23/ac01daf0962458a9eb8c0b1e2f6ce5bc.jpg, createdBy=04b81710322, createdName=1771ae4158m, createdTime=Fri Nov 03 16:14:45 CST 2017, time=2017-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=256909, encodeId=fbfa256909ab, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3da1990174, createdName=yfjms, createdTime=Sun Oct 29 09:43:42 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=256166, encodeId=cddc25616631, content=谢谢分享.有点意思, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Thu Oct 26 18:13:25 CST 2017, time=2017-10-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=254064, encodeId=d5d525406402, content=不错的.学习了.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Wed Oct 18 16:22:19 CST 2017, time=2017-10-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253276, encodeId=43f82532e621, content=学习学习.了解了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Mon Oct 16 06:20:46 CST 2017, time=2017-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253206, encodeId=978d2532063d, content=学习并分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Oct 15 21:21:32 CST 2017, time=2017-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253059, encodeId=17d2253059e6, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3da1990174, createdName=yfjms, createdTime=Sun Oct 15 08:13:52 CST 2017, time=2017-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=252726, encodeId=5a20252e2618, content=学习学习.继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Sat Oct 14 06:40:16 CST 2017, time=2017-10-14, status=1, ipAttribution=)]
    2017-10-29 yfjms

    学习

    0

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    2017-10-26 虈亣靌

    谢谢分享.有点意思

    0

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    2017-10-18 虈亣靌

    不错的.学习了.谢谢分享!

    0

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    2017-10-16 1dd8c52fm63(暂无匿称)

    学习学习.了解了解

    0

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    2017-10-15 大爰

    学习并分享!!

    0

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    2017-10-15 yfjms

    学习了

    0

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    2017-10-14 1dd8c52fm63(暂无匿称)

    学习学习.继续关注

    0

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