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Lancet HIV:治愈艾滋病新希望——“伦敦病人”HIV病毒检测阴性已持续30个月

2020-03-11 MedSci原创 MedSci原创

研究认为,“伦敦病人”在异体干细胞移植后HIV缓解已持续30个月,且在血液、脑脊液、肠组织或淋巴组织中均未检测到病毒

在IciStem队列中, HIV感染患者接受携带CCR5(CCR5Δ32/Δ32)突变的异体干细胞移植,而“伦敦病人”在治疗中断后18个月持续出现疾病缓解。近日研究人员公布了30个月的长期结果。

研究人员使用超灵敏手段测量患者血浆、精液和脑脊液(CS F)样品中的HIV-1RNA。在肠道活检标本和淋巴结组织中,通过PCR进行细胞拷贝数和总HIV-1dna水平进行定量分析。研究人员还利用多重ddPCR技术分析是否存在完整的前病毒DNA。通过细胞内细胞因子染色来测量HIV-1特异性T细胞反应。

“伦敦患者”在30个月(最后一次检测时间为2020年3月4日)血浆中的HIV-1病毒载量仍然无法检测,限度为每毫升1拷贝。在28个月时,患者的CD4计数为每430细胞/μL(占总T细胞的23.5%)。在28个月的外周CD4记忆细胞中存在一个非常低水平的HIV-1DNA阳性信号。21个月时,病毒在精液、血浆(<12拷贝/mL)和细胞(10拷贝/106个细胞)的含量均低于限度到。25个月时脑脊液中HIV-1RNA含量低于检测限((1 拷贝/ mL))。在22个月的直肠、盲肠和乙状结肠和回肠末端组织样本中,dd PCR检测的HIV-1DNA为阴性。27个月时,腋窝淋巴结长末端重复阳性(每106个细胞33个拷贝)和env阳性(每106个细胞26.1个拷贝),ψ和整合酶阴性,完整的前病毒DNA检测阴性。HIV-1特异性CD4和CD8 T细胞应答在27个月时未检出。低亲和力Env抗体持续下降。数学模型表明显示“伦敦患者”治愈的概率为98%-99%。

研究认为,“伦敦病人”在异体干细胞移植后HIV缓解已持续30个月,且在血液、脑脊液、肠组织或淋巴组织中均未检测到病毒。

原始出处:

Prof Ravindra Kumar Gupta et al. Evidence for HIV-1 cure after CCR5Δ32/Δ32 allogeneic haemopoietic stem-cell transplantation 30 months post analytical treatment interruption: a case report.Lancet HIV. March 10, 2020.

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    2020-06-24 珙桐
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    2020-09-25 howi
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