category
bioRxiv
date
Mar 21, 2026
slug
status
Published
summary
首次鉴定非生产性HIV感染的特异性基因表达谱(118个上调基因),发现CCL22/IDO1等免疫调节基因在非生产性感染中的关键作用,揭示CD4+ TSCM亚群通过免疫逃逸机制维持HIV库的分子机制,为治愈性治疗提供新靶点。
tags
测序技术
合成生物学
type
Post

📄 原文题目

Three immunoregulatory signatures define non-productive HIV infection in CD4+ T memory stem cells

🔗 原文链接

💡 AI 核心解读

首次鉴定非生产性HIV感染的特异性基因表达谱(118个上调基因),发现CCL22/IDO1等免疫调节基因在非生产性感染中的关键作用,揭示CD4+ TSCM亚群通过免疫逃逸机制维持HIV库的分子机制,为治愈性治疗提供新靶点。

📝 英文原版摘要

The persistent HIV reservoir constitutes the main obstacle to curing HIV/AIDS disease. Our understanding of how non-productive HIV infections are established in primary human CD4+ T cells during the first round of infection remains, however, incomplete. In this study, we leveraged the HIV reporter virus pMorpheus-V5 to delineate cellular expression patterns that are upregulated in non-productively infected primary CD4+ T memory stem cells (TSCM). We found that CD4+ TSCM harboring non-productive proviruses displayed a distinct transcriptomic signature comprising 118 upregulated genes. This non-productive expression profile was distinct from that of productively infected cells as well as from negative-exposed and mock-infected cells. Among the cellular genes most upregulated in CD4+ T cells harboring non productive proviruses were CCR4-binding migratory chemokines (CCL22, CCL17), tryptophan catabolic enzymes (IDO1, KYNU), and genes encoding cytoskeletal rearrangement proteins (BASP1, TNFAIP2). Intracellular flow cytometry-based analyses confirmed that non-productively infected CD4+ TSCM cells were enriched for CCL22 and IDO1 co-expression compared to the other CD4+ memory subsets, underscoring a clear CD4+ T cell subset specificity for the upregulation of these two immune gene sets associated with non-productive infections. These findings suggest that primary human CD4+TSCM harboring non-productive proviruses display a distinct immunoregulatory phenotype which may facilitate immune evasion and contribute to the persistence of the HIV reservoir.
ApeA切割基因组RNA以防御RNA噬菌体感染欧洲松毛虫(Diprion pini, Linnaeus, 1758)的近染色体规模基因组组装
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