Baidu
map

Cell:人体生产保护性HIV抗体的VIP绿道

2018-09-30 小通 生物通

只有大约一半的HIV感染者可以产生广泛的中和抗体(bnAbs),通常在病毒反复突变并插入宿主细胞基因组很久以后才得以生成,因时机过晚而失去效果。

只有大约一半的HIV感染者可以产生广泛的中和抗体(bnAbs),通常在病毒反复突变并插入宿主细胞基因组很久以后才得以生成,因时机过晚而失去效果。

在HIV感染前引出bnAbs抗体,就可以在病毒出现时及时阻断病毒,杜克人类疫苗研究所的研究团队鉴定出一种重要蛋白,可以高度激活人体bnAbs。



该蛋白名为RAB11FIP5,似乎参与了自然杀伤性细胞(natural killer cell,NK)的分布和功能(NK细胞是病毒感染期间免疫系统的最早应答者之一)。

杜克人类疫苗研究所所长、这篇《Cell》文章通讯作者Barton Haynes说:“这种类型的免疫细胞以前并不知道可以调节bnAbs,我们找到了新的NK细胞货物运载途径似乎对bnAbs生产起重要作用。”

研究人员设计实验分析了可以制造bnAbs的HIV感染者与不能生产bnAbs之间的分子差异,分析了239名感染者,发现大约50人分别处于两个极端(bnAbs数量最多和最低)。

使用RNA测序,确定这两组极端患者体内的分子差异,发现了他们的RAB11FIP5基因表达差异。“这些数据表明,NK细胞功能障碍允许bnAbs生产,意味着,Rab11是HIV抗体应答的调节因子,”Bradley说。“这是一条我们正希望改善的、接种疫苗产生更好的HIV抗体应答的新途径。”

原始出处:Todd Bradley, Dimitra Peppa, Isabela Pedroza-Pacheco, et al. RAB11FIP5 Expression and Altered Natural Killer Cell Function Are Associated with Induction of HIV Broadly Neutralizing Antibody Responses. Cell. September 27, 2018 

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1961161, encodeId=14b61961161a1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Thu Jan 03 11:41:00 CST 2019, time=2019-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746685, encodeId=54d01e46685ed, content=<a href='/topic/show?id=fd271844257' target=_blank style='color:#2F92EE;'>#VIP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18442, encryptionId=fd271844257, topicName=VIP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=933235833639, createdName=chendoc254, createdTime=Sat Aug 24 21:41:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870890, encodeId=851918e089005, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jun 10 15:41:00 CST 2019, time=2019-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036530, encodeId=a54c203653046, content=<a href='/topic/show?id=8ebe8910d5' target=_blank style='color:#2F92EE;'>#HIV抗体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8910, encryptionId=8ebe8910d5, topicName=HIV抗体)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87d405, createdName=Homburg, createdTime=Wed May 22 20:41:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1517777, encodeId=4d2a151e777e3, content=<a href='/topic/show?id=44156886664' target=_blank style='color:#2F92EE;'>#生产#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68866, encryptionId=44156886664, topicName=生产)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37a111112788, createdName=ms1343860338762272, createdTime=Tue Oct 02 12:41:00 CST 2018, time=2018-10-02, status=1, ipAttribution=)]
    2019-01-03 维他命
  2. [GetPortalCommentsPageByObjectIdResponse(id=1961161, encodeId=14b61961161a1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Thu Jan 03 11:41:00 CST 2019, time=2019-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746685, encodeId=54d01e46685ed, content=<a href='/topic/show?id=fd271844257' target=_blank style='color:#2F92EE;'>#VIP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18442, encryptionId=fd271844257, topicName=VIP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=933235833639, createdName=chendoc254, createdTime=Sat Aug 24 21:41:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870890, encodeId=851918e089005, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jun 10 15:41:00 CST 2019, time=2019-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036530, encodeId=a54c203653046, content=<a href='/topic/show?id=8ebe8910d5' target=_blank style='color:#2F92EE;'>#HIV抗体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8910, encryptionId=8ebe8910d5, topicName=HIV抗体)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87d405, createdName=Homburg, createdTime=Wed May 22 20:41:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1517777, encodeId=4d2a151e777e3, content=<a href='/topic/show?id=44156886664' target=_blank style='color:#2F92EE;'>#生产#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68866, encryptionId=44156886664, topicName=生产)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37a111112788, createdName=ms1343860338762272, createdTime=Tue Oct 02 12:41:00 CST 2018, time=2018-10-02, status=1, ipAttribution=)]
    2019-08-24 chendoc254
  3. [GetPortalCommentsPageByObjectIdResponse(id=1961161, encodeId=14b61961161a1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Thu Jan 03 11:41:00 CST 2019, time=2019-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746685, encodeId=54d01e46685ed, content=<a href='/topic/show?id=fd271844257' target=_blank style='color:#2F92EE;'>#VIP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18442, encryptionId=fd271844257, topicName=VIP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=933235833639, createdName=chendoc254, createdTime=Sat Aug 24 21:41:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870890, encodeId=851918e089005, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jun 10 15:41:00 CST 2019, time=2019-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036530, encodeId=a54c203653046, content=<a href='/topic/show?id=8ebe8910d5' target=_blank style='color:#2F92EE;'>#HIV抗体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8910, encryptionId=8ebe8910d5, topicName=HIV抗体)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87d405, createdName=Homburg, createdTime=Wed May 22 20:41:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1517777, encodeId=4d2a151e777e3, content=<a href='/topic/show?id=44156886664' target=_blank style='color:#2F92EE;'>#生产#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68866, encryptionId=44156886664, topicName=生产)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37a111112788, createdName=ms1343860338762272, createdTime=Tue Oct 02 12:41:00 CST 2018, time=2018-10-02, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1961161, encodeId=14b61961161a1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Thu Jan 03 11:41:00 CST 2019, time=2019-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746685, encodeId=54d01e46685ed, content=<a href='/topic/show?id=fd271844257' target=_blank style='color:#2F92EE;'>#VIP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18442, encryptionId=fd271844257, topicName=VIP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=933235833639, createdName=chendoc254, createdTime=Sat Aug 24 21:41:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870890, encodeId=851918e089005, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jun 10 15:41:00 CST 2019, time=2019-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036530, encodeId=a54c203653046, content=<a href='/topic/show?id=8ebe8910d5' target=_blank style='color:#2F92EE;'>#HIV抗体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8910, encryptionId=8ebe8910d5, topicName=HIV抗体)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87d405, createdName=Homburg, createdTime=Wed May 22 20:41:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1517777, encodeId=4d2a151e777e3, content=<a href='/topic/show?id=44156886664' target=_blank style='color:#2F92EE;'>#生产#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68866, encryptionId=44156886664, topicName=生产)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37a111112788, createdName=ms1343860338762272, createdTime=Tue Oct 02 12:41:00 CST 2018, time=2018-10-02, status=1, ipAttribution=)]
    2019-05-22 Homburg
  5. [GetPortalCommentsPageByObjectIdResponse(id=1961161, encodeId=14b61961161a1, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, 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=Thu Jan 03 11:41:00 CST 2019, time=2019-01-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746685, encodeId=54d01e46685ed, content=<a href='/topic/show?id=fd271844257' target=_blank style='color:#2F92EE;'>#VIP#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=18442, encryptionId=fd271844257, topicName=VIP)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=933235833639, createdName=chendoc254, createdTime=Sat Aug 24 21:41:00 CST 2019, time=2019-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1870890, encodeId=851918e089005, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Jun 10 15:41:00 CST 2019, time=2019-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036530, encodeId=a54c203653046, content=<a href='/topic/show?id=8ebe8910d5' target=_blank style='color:#2F92EE;'>#HIV抗体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=8910, encryptionId=8ebe8910d5, topicName=HIV抗体)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e87d405, createdName=Homburg, createdTime=Wed May 22 20:41:00 CST 2019, time=2019-05-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1517777, encodeId=4d2a151e777e3, content=<a href='/topic/show?id=44156886664' target=_blank style='color:#2F92EE;'>#生产#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68866, encryptionId=44156886664, topicName=生产)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37a111112788, createdName=ms1343860338762272, createdTime=Tue Oct 02 12:41:00 CST 2018, time=2018-10-02, status=1, ipAttribution=)]

相关资讯

Lancet:控制注射吸毒人群HIV感染的新尝试

研究认为,这种灵活,可扩展的抗病毒治疗手段可提高HIV阳性的注射吸毒者治疗依从性,同时降低其吸毒同伴的HIV感染风险

AP&T: 艾滋病毒感染患者的糖尿病风险与肝硬化程度有关

据报道,人类免疫缺陷病毒(HIV)和丙型肝炎病毒(HCV)感染都与糖尿病(DM)的高风险相关,但目前仍没有定论。本项研究旨在确定慢性HCV与DM发病率之间是否存在关联,并研究HIV感染患者中肝硬化与糖尿病之间的关系。

JAHA:HIV患者血清PCSK9水平与冠脉内皮功能呈负相关

HIV阳性病人患冠心病的风险会增高,但具体机制尚未阐明。本研究纳入分析了48例接受抗病毒治疗的无冠心病的HIV阳性患者,以及15例年龄和低密度脂蛋白胆固醇匹配的正常对照,对其进行磁共振检查以评估冠脉内皮功能,并抽取血样检测血清PCSK9水平和血管标志物水平。分析结果显示,HIV阳性患者的血清PCSK9水平高出正常对照65%(P<0.0001),且HIV患者的冠脉内皮功能明显降低,并与血清PC

默沙东HIV新药Delstrigo和Pifeltro获得FDA批准上市

MSD的HIV药物Delstrigo和Pifeltro被FDA批准用于没有抗逆转录病毒治疗经验的成年患者。

Blood:原发性渗出性淋巴瘤!

原发性渗出性淋巴瘤(PEL)是一种罕见的B细胞恶性肿瘤,主要发生于免疫功能不全的患者,如HIV感染者和进行器官移植的患者。PEL的主要特征是恶性渗出,表现为浆膜腔积液,一般无肿瘤包块。其发病与8型人疱疹病毒/卡波西肉瘤相关疱疹病毒潜伏感染相关,肿瘤细胞的正常对应细胞为向浆细胞分化的B细胞。免疫缺陷和缺乏CD20表达导致抗CD20单克隆抗体缺乏预期的疗效;PEL的临床预后极其不良,1年总体存活率仅3

Clin Infect Dis:MSM暴露前预防HIV感染对性风险行为有何影响?

2018年8月,澳大利亚和瑞典学者在《Clin Infect Dis》发表了一项系统评价和Meta分析,考察了男男性行为者(MSM)暴露前预防(PrEP)人类免疫缺陷病毒(HIV)感染对性风险行为的影响。

Baidu
map
Baidu
map
Baidu
map