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Iannetta M, Isnard S, Manuzak J, Guillerme JB, Notin M, Bailly K, Andrieu M, Amraoui S, Vimeux L, Figueiredo S, Charmeteau-de Muylder B, Vaton L, Hatton EX, Samri A, Autran B, Thiébaut R, Chaghil N, Glohi D, Charpentier C, Descamps D, Brun-Vézinet F, Matheron S, Cheynier R, Hosmalin A. Conventional Dendritic Cells and Slan + Monocytes During HIV-2 Infection. Front Immunol 2020; 11:1658. [PMID: 32903610 PMCID: PMC7438582 DOI: 10.3389/fimmu.2020.01658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/22/2020] [Indexed: 12/25/2022] Open
Abstract
HIV-2 infection is characterized by low viremia and slow disease progression as compared to HIV-1 infection. Circulating CD14++CD16+ monocytes were found to accumulate and CD11c+ conventional dendritic cells (cDC) to be depleted in a Portuguese cohort of people living with HIV-2 (PLWHIV-2), compared to blood bank healthy donors (HD). We studied more precisely classical monocytes; CD16+ inflammatory (intermediate, non-classical and slan+ monocytes, known to accumulate during viremic HIV-1 infection); cDC1, important for cross-presentation, and cDC2, both depleted during HIV-1 infection. We analyzed by flow cytometry these PBMC subsets from Paris area residents: 29 asymptomatic, untreated PLWHIV-2 from the IMMUNOVIR-2 study, part of the ANRS-CO5 HIV-2 cohort: 19 long-term non-progressors (LTNP; infection ≥8 years, undetectable viral load, stable CD4 counts≥500/μL; 17 of West-African origin -WA), and 10 non-LTNP (P; progressive infection; 9 WA); and 30 age-and sex-matched controls: 16 blood bank HD with unknown geographical origin, and 10 HD of WA origin (GeoHD). We measured plasma bacterial translocation markers by ELISA. Non-classical monocyte counts were higher in GeoHD than in HD (54 vs. 32 cells/μL, p = 0.0002). Slan+ monocyte counts were twice as high in GeoHD than in HD (WA: 28 vs. 13 cells/μL, p = 0.0002). Thus cell counts were compared only between participants of WA origin. They were similar in LTNP, P and GeoHD, indicating that there were no HIV-2 related differences. cDC counts did not show major differences between the groups. Interestingly, inflammatory monocyte counts correlated with plasma sCD14 and LBP only in PLWHIV-2, especially LTNP, and not in GeoHD. In conclusion, in LTNP PLWHIV-2, inflammatory monocyte counts correlated with LBP or sCD14 plasma levels, indicating a potential innate immune response to subclinical bacterial translocation. As GeoHD had higher inflammatory monocyte counts than HD, our data also show that specific controls are important to refine innate immunity studies.
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Affiliation(s)
- Marco Iannetta
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Stéphane Isnard
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Jennifer Manuzak
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | | | - Mathilde Notin
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Karine Bailly
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Muriel Andrieu
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Sonia Amraoui
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Lene Vimeux
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | | | | | - Laura Vaton
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Etienne X Hatton
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Assia Samri
- Sorbonne Université, Inserm 1135, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Brigitte Autran
- Sorbonne Université, Inserm 1135, Centre d'Immunologie et des Maladies Infectieuses, Cimi-Paris, Paris, France
| | - Rodolphe Thiébaut
- INSERM, Univ. Bordeaux, CIC 1401, UMR 1219, Bordeaux Population Health Research Center, CHU Bordeaux, Bordeaux, France
| | - Nathalie Chaghil
- INSERM, Univ. Bordeaux, CIC 1401, UMR 1219, Bordeaux Population Health Research Center, CHU Bordeaux, Bordeaux, France
| | - David Glohi
- Service des Maladies Infectieuses, AP-HP, Hôpital Bichat-Claude Bernard, Paris, France
| | - Charlotte Charpentier
- Service des Maladies Infectieuses, AP-HP, Hôpital Bichat-Claude Bernard, Paris, France
| | - Diane Descamps
- Service des Maladies Infectieuses, AP-HP, Hôpital Bichat-Claude Bernard, Paris, France
| | | | - Sophie Matheron
- Service des Maladies Infectieuses, AP-HP, Hôpital Bichat-Claude Bernard, Paris, France.,INSERM, UMR 1137, IAME (Infection Antimicrobials Modelling Evolution), Université de Paris, Paris, France
| | - Remi Cheynier
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
| | - Anne Hosmalin
- Université de Paris, Institut Cochin, CNRS, INSERM, Paris, France
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