Nature Materials:研究揭示引起自身性免疫疾病的分子机制

2015-06-17 佚名 中国科学技术大学

近日,中国科学技术大学教授金帆与美国加州大学洛杉矶分校教授Gerard Wong合作,研究发现了导致自身性免疫疾病中,免疫系统如何被外源或内源分子激活的统一分子机制。该研究成果在线发表在6月8日的《自然·材料》上。当人体自身的免疫系统出现紊乱,如不能正确识别、区分病原组织和健康组织时,免疫系统就会攻击人体自身从而导致疾病。例如,当健康的人受到病毒或者病原体攻击时,免疫系统会通过一种称作TLR9的受

近日,中国科学技术大学教授金帆与美国加州大学洛杉矶分校教授Gerard Wong合作,研究发现了导致自身性免疫疾病中,免疫系统如何被外源或内源分子激活的统一分子机制。该研究成果在线发表在6月8日的《自然·材料》上。

当人体自身的免疫系统出现紊乱,如不能正确识别、区分病原组织和健康组织时,免疫系统就会攻击人体自身从而导致疾病。例如,当健康的人受到病毒或者病原体攻击时,免疫系统会通过一种称作TLR9的受体蛋白去识别病毒或病原体的DNA,从而激活免疫反应。而对于如患有红斑狼疮和牛皮癣的患者,他们免疫系统无法正确识别、区分病毒和人体自身的DNA,从而导致人体自身免疫系统一直保持在激活状态。

研究人员利用高精度的小角同步辐射散射的方法,率先表征确定了一系列可激发免疫反应的外源或内源分子与DNA所生产复合体的空间结构,发现了激活免疫受体蛋白TLR9的分子机制,即TLR9是否被激活严格取决于外源或内源分子与DNA所生产复合体的空间结构,只有当DNA分子被外源或内源分子压缩到一特定空间距离时,免疫受体蛋白TLR9才可被激活。他们与瑞士的Michel Gilliet教授合作完成了对这一系列DNA复合体对免疫系统激活的测试,从而在实验上确定了是什么样的空间结构可令免疫系统激活,最后与剑桥大学教授Jure Dobnikar的合作,利用计算模拟的方法证明了所发现的实验规律,从而最终阐明了其分子机制。这一突破性进展将帮助人们找到新的方法去治疗这一类疾病。

原始出处:

Nathan W. Schmidt, Fan Jin, Roberto Lande, Tine Curk, Wujing Xian, Calvin Lee, Loredana Frasca, Daan Frenkel, Jure Dobnikar, Michel Gilliet & Gerard C. L. Wong.Liquid-crystalline ordering of antimicrobial peptide–DNA complexes controls TLR9 activation.Nature Materials, June 8, 2015.doi:10.1038/nmat4298

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  1. [GetPortalCommentsPageByObjectIdResponse(id=1799477, encodeId=3c991e99477bc, content=<a href='/topic/show?id=babfe07093b' target=_blank style='color:#2F92EE;'>#疾病的分子机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70709, encryptionId=babfe07093b, topicName=疾病的分子机制)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=512d422, createdName=canlab, createdTime=Fri Jul 24 14:34:00 CST 2015, time=2015-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66014, encodeId=0e096601467, content=很好,要看原文。外源物质是否与内源很像,为什么像?是工艺与科技的进步造成的相似?才是自身免疫疾病的根源?, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/04/24/1c2dbd6706e64df33befd6663f1d6b37.jpg, createdBy=94f61661779, createdName=lyh994, createdTime=Sat Feb 27 18:23:00 CST 2016, time=2016-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880695, encodeId=34e518806958b, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Feb 03 01:34:00 CST 2016, time=2016-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29247, encodeId=ea502924e52, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 23:11:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511215, encodeId=82b215112156d, content=<a href='/topic/show?id=3f922910088' target=_blank style='color:#2F92EE;'>#免疫疾病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29100, encryptionId=3f922910088, topicName=免疫疾病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8a3610309283, createdName=晓辰, createdTime=Fri Jun 19 04:34:00 CST 2015, time=2015-06-19, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1799477, encodeId=3c991e99477bc, content=<a href='/topic/show?id=babfe07093b' target=_blank style='color:#2F92EE;'>#疾病的分子机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70709, encryptionId=babfe07093b, topicName=疾病的分子机制)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=512d422, createdName=canlab, createdTime=Fri Jul 24 14:34:00 CST 2015, time=2015-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66014, encodeId=0e096601467, content=很好,要看原文。外源物质是否与内源很像,为什么像?是工艺与科技的进步造成的相似?才是自身免疫疾病的根源?, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/04/24/1c2dbd6706e64df33befd6663f1d6b37.jpg, createdBy=94f61661779, createdName=lyh994, createdTime=Sat Feb 27 18:23:00 CST 2016, time=2016-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880695, encodeId=34e518806958b, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Feb 03 01:34:00 CST 2016, time=2016-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29247, encodeId=ea502924e52, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 23:11:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511215, encodeId=82b215112156d, content=<a href='/topic/show?id=3f922910088' target=_blank style='color:#2F92EE;'>#免疫疾病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29100, encryptionId=3f922910088, topicName=免疫疾病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8a3610309283, createdName=晓辰, createdTime=Fri Jun 19 04:34:00 CST 2015, time=2015-06-19, status=1, ipAttribution=)]
    2016-02-27 lyh994

    很好,要看原文。外源物质是否与内源很像,为什么像?是工艺与科技的进步造成的相似?才是自身免疫疾病的根源?

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1799477, encodeId=3c991e99477bc, content=<a href='/topic/show?id=babfe07093b' target=_blank style='color:#2F92EE;'>#疾病的分子机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70709, encryptionId=babfe07093b, topicName=疾病的分子机制)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=512d422, createdName=canlab, createdTime=Fri Jul 24 14:34:00 CST 2015, time=2015-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66014, encodeId=0e096601467, content=很好,要看原文。外源物质是否与内源很像,为什么像?是工艺与科技的进步造成的相似?才是自身免疫疾病的根源?, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/04/24/1c2dbd6706e64df33befd6663f1d6b37.jpg, createdBy=94f61661779, createdName=lyh994, createdTime=Sat Feb 27 18:23:00 CST 2016, time=2016-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880695, encodeId=34e518806958b, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Feb 03 01:34:00 CST 2016, time=2016-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29247, encodeId=ea502924e52, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 23:11:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511215, encodeId=82b215112156d, content=<a href='/topic/show?id=3f922910088' target=_blank style='color:#2F92EE;'>#免疫疾病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29100, encryptionId=3f922910088, topicName=免疫疾病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8a3610309283, createdName=晓辰, createdTime=Fri Jun 19 04:34:00 CST 2015, time=2015-06-19, status=1, ipAttribution=)]
    2016-02-03 liye789132251
  4. [GetPortalCommentsPageByObjectIdResponse(id=1799477, encodeId=3c991e99477bc, content=<a href='/topic/show?id=babfe07093b' target=_blank style='color:#2F92EE;'>#疾病的分子机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70709, encryptionId=babfe07093b, topicName=疾病的分子机制)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=512d422, createdName=canlab, createdTime=Fri Jul 24 14:34:00 CST 2015, time=2015-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66014, encodeId=0e096601467, content=很好,要看原文。外源物质是否与内源很像,为什么像?是工艺与科技的进步造成的相似?才是自身免疫疾病的根源?, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/04/24/1c2dbd6706e64df33befd6663f1d6b37.jpg, createdBy=94f61661779, createdName=lyh994, createdTime=Sat Feb 27 18:23:00 CST 2016, time=2016-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880695, encodeId=34e518806958b, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Feb 03 01:34:00 CST 2016, time=2016-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29247, encodeId=ea502924e52, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 23:11:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511215, encodeId=82b215112156d, content=<a href='/topic/show?id=3f922910088' target=_blank style='color:#2F92EE;'>#免疫疾病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29100, encryptionId=3f922910088, topicName=免疫疾病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8a3610309283, createdName=晓辰, createdTime=Fri Jun 19 04:34:00 CST 2015, time=2015-06-19, status=1, ipAttribution=)]
    2015-06-25 huaxipanxing

    看看

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1799477, encodeId=3c991e99477bc, content=<a href='/topic/show?id=babfe07093b' target=_blank style='color:#2F92EE;'>#疾病的分子机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=70709, encryptionId=babfe07093b, topicName=疾病的分子机制)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=512d422, createdName=canlab, createdTime=Fri Jul 24 14:34:00 CST 2015, time=2015-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=66014, encodeId=0e096601467, content=很好,要看原文。外源物质是否与内源很像,为什么像?是工艺与科技的进步造成的相似?才是自身免疫疾病的根源?, beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/04/24/1c2dbd6706e64df33befd6663f1d6b37.jpg, createdBy=94f61661779, createdName=lyh994, createdTime=Sat Feb 27 18:23:00 CST 2016, time=2016-02-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880695, encodeId=34e518806958b, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Feb 03 01:34:00 CST 2016, time=2016-02-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29247, encodeId=ea502924e52, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=109, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 23:11:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511215, encodeId=82b215112156d, content=<a href='/topic/show?id=3f922910088' target=_blank style='color:#2F92EE;'>#免疫疾病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=29100, encryptionId=3f922910088, topicName=免疫疾病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8a3610309283, createdName=晓辰, createdTime=Fri Jun 19 04:34:00 CST 2015, time=2015-06-19, status=1, ipAttribution=)]