Fundación de Investigación Biomédica, Hospital Carlos III, Madrid, Spain.
J Virol. 2012 Dec;86(23):13081-4. doi: 10.1128/JVI.01741-12. Epub 2012 Sep 12.
Several factors are involved in the control of HIV transcription/replication, including epigenetic modifications at the promoter level. Analysis of the HIV long terminal repeat (LTR) methylation status in infected patients controlling viremia is scarce. Herein, we show a higher degree of DNA methylation in the 5'-LTR of long-term nonprogressor and elite controller (LTNP/EC) versus progressor patients and a positive correlation with time of infection, indicating a certain contribution of HIV LTR silencing in reducing the number of replicating viruses which may account for a delayed progression.
多种因素参与 HIV 转录/复制的调控,包括启动子水平的表观遗传修饰。对控制病毒血症的感染患者 HIV 长末端重复序列(LTR)甲基化状态的分析较少。在此,我们发现长期非进展者和精英控制者(LTNP/EC)与进展者患者相比,5'-LTR 的 DNA 甲基化程度更高,并且与感染时间呈正相关,表明 HIV LTR 沉默在减少复制病毒数量方面具有一定作用,这可能是进展延迟的原因。