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© Charles Dauguet
Virus VIH-2, second virus du sida isolé en 1985 par l'équipe du Pr. Montagnier de l'Institut Pasteur.
Publication : Viruses

Autopsy Study Defines Composition and Dynamics of the HIV-1 Reservoir after Allogeneic Hematopoietic Stem Cell Transplantation with CCR5Δ32/Δ32 Donor Cells.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Viruses - 17 Sep 2022

Huyveneers LEP, Bruns A, Stam A, Ellerbroek P, de Jong D, Nagy NA, Gumbs SBH, Tesselaar K, Bosman K, Salgado M, Hütter G, Brosens LAA, Kwon M, Diez Martin J, van der Meer JTM, de Kort TM, Sáez-Cirión A, Schulze Zur Wiesch J, Boelens JJ, Martinez-Picado J, Kuball JHE, Wensing AMJ, Nijhuis M, ,

Link to Pubmed [PMID] – 36146874

Link to DOI – 206910.3390/v14092069

Viruses 2022 09; 14(9):

Allo-HSCT with CCR5Δ32/Δ32 donor cells is the only curative HIV-1 intervention. We investigated the impact of allo-HSCT on the viral reservoir in PBMCs and post-mortem tissue in two patients. IciS-05 and IciS-11 both received a CCR5Δ32/Δ32 allo-HSCT. Before allo-HSCT, ultrasensitive HIV-1 RNA quantification; HIV-1-DNA quantification; co-receptor tropism analysis; deep-sequencing and viral characterization in PBMCs and bone marrow; and post-allo-HSCT, ultrasensitive RNA and HIV-1-DNA quantification were performed. Proviral quantification, deep sequencing, and viral characterization were done in post-mortem tissue samples. Both patients harbored subtype B CCR5-tropic HIV-1 as determined genotypically and functionally by virus culture. Pre-allo-HSCT, HIV-1-DNA could be detected in both patients in bone marrow, PBMCs, and T-cell subsets. Chimerism correlated with detectable HIV-1-DNA LTR copies in cells and tissues. Post-mortem analysis of IciS-05 revealed proviral DNA in all tissue biopsies, but not in PBMCs. In patient IciS-11, who was transplanted twice, no HIV-1-DNA could be detected in PBMCs at the time of death, whereas HIV-1-DNA was detectable in the lymph node. In conclusion, shortly after CCR5Δ32/Δ32, allo-HSCT HIV-1-DNA became undetectable in PBMCs. However, HIV-1-DNA variants identical to those present before transplantation persisted in post-mortem-obtained tissues, indicating that these tissues play an important role as viral reservoirs.

https://pubmed.ncbi.nlm.nih.gov/36146874