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HIV silencing and cell survival signatures in infected T cell reservoirs
Rare CD4 T cells that contain HIV under antiretroviral therapy represent an important barrier to HIV cure 1 – 3 , but the infeasibility of isolating and characterizing these cells in their natural state has led to uncertainty about whether they possess distinctive attributes that HIV cure-directed t...
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Published in: | Nature (London) 2023-02, Vol.614 (7947), p.318-325 |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
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Online Access: | Get full text |
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Summary: | Rare CD4 T cells that contain HIV under antiretroviral therapy represent an important barrier to HIV cure
1
–
3
, but the infeasibility of isolating and characterizing these cells in their natural state has led to uncertainty about whether they possess distinctive attributes that HIV cure-directed therapies might exploit. Here we address this challenge using a microfluidic technology that isolates the transcriptomes of HIV-infected cells based solely on the detection of HIV DNA. HIV-DNA
+
memory CD4 T cells in the blood from people receiving antiretroviral therapy showed inhibition of six transcriptomic pathways, including death receptor signalling, necroptosis signalling and antiproliferative Gα12/13 signalling. Moreover, two groups of genes identified by network co-expression analysis were significantly associated with HIV-DNA
+
cells. These genes (
n
= 145) accounted for just 0.81% of the measured transcriptome and included negative regulators of HIV transcription that were higher in HIV-DNA
+
cells, positive regulators of HIV transcription that were lower in HIV-DNA
+
cells, and other genes involved in RNA processing, negative regulation of mRNA translation, and regulation of cell state and fate. These findings reveal that HIV-infected memory CD4 T cells under antiretroviral therapy are a distinctive population with host gene expression patterns that favour HIV silencing, cell survival and cell proliferation, with important implications for the development of HIV cure strategies.
HIV-infected memory CD4 T cells under antiretroviral therapy are a distinctive population of cells with transcriptomic patterns that favour HIV silencing, cell survival and cell proliferation. |
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ISSN: | 0028-0836 1476-4687 1476-4687 |
DOI: | 10.1038/s41586-022-05556-6 |