Abstract
HIV infects long-lived CD4 memory T cells, establishing a latent viral reservoir that necessitates lifelong antiretroviral therapy (ART). How this reservoir is formed so quickly after infection remains unclear. We now show the innate inflammatory response to HIV infection results in CCL2 chemokine release, leading to recruitment of cells expressing the CCR2 receptor, including a subset of central memory CD4 T cells. Supporting a role for the CCL2/CCR2 axis in rapid reservoir formation, we find (i) treatment of humanized mice with anti-CCL2 antibodies during early HIV infection decreases reservoir seeding and preserves CCR2/51 cells and (ii) CCR2/51 cells from the blood of HIV-infected individuals on long-term ART contain significantly more integrated provirus than CCR2/5-negative memory or naive cells. Together, these studies support a model where the host’s innate inflammatory response to HIV infection, including CCL2 production, leads to the recruitment of CCR2/51 central memory CD4 T cells to zones of virus-associated inflammation, likely contributing to rapid formation of the latent HIV reservoir.
Original language | English (US) |
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Journal | mBio |
Volume | 13 |
Issue number | 5 |
DOIs | |
State | Published - Sep 2022 |
Funding
We thank Jane Srivastava and Nandhini Raman of the Gladstone Flow Cytometry Core, the UCSF Diabetes Research Center for use of their CyTOF instrument, the UCSF Parnassus Flow Cytometry Core for CyTOF assistance, John C. W. Carroll for graphic arts, Francoise Chanut for editorial assistance, and Robin Givens for administrative assistance. Research reported in this publication was supported by the NIAID Intramural Research Program, NIAID, NHLBI, NIDA, NINDS, NIMH, and NIDDK of the National Institutes of Health under award number UM1AI164559 to the HOPE Collaboratory and R01 AI147777, R01 AI127219, and P01 AI131374. The Gladstone Institutes acknowledges the generous support of the James B. Pendleton Charitable Trust. M.W. and U.D. were supported by the DFG priority program 556 SPP1923 (WI 5086/1-1 and DI 714/18-2). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. There are no competing interests. Research reported in this publication was supported by the NIAID Intramural Research Program, NIAID, NHLBI, NIDA, NINDS, NIMH, and NIDDK of the National Institutes of Health under award number UM1AI164559 to the HOPE Collaboratory and R01 AI147777, R01 AI127219, and P01 AI131374. The Gladstone Institutes acknowledges the generous support of the James B. Pendleton Charitable Trust. M.W. and U.D. were supported by the DFG priority program 556 SPP1923 (WI 5086/1-1 and DI 714/18-2).
Keywords
- CCL2
- CRISPR
- CyTOF
- human immunodeficiency virus
- latency
- reservoir
ASJC Scopus subject areas
- Microbiology
- Virology