CD4 is expressed on a heterogeneous subset of hematopoietic progenitors, which persistently harbor CXCR4 and CCR5-tropic HIV proviral genomes in vivo

Nadia T. Sebastian, Thomas D. Zaikos, Valeri Terry, Frances Taschuk, Lucy A. McNamara, Adewunmi Onafuwa-Nuga, Ryan Yucha, Robert A.J. Signer, James Riddell, Dale Bixby, Norman Markowitz, Sean J. Morrison, Kathleen L. Collins

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Latent HIV infection of long-lived cells is a barrier to viral clearance. Hematopoietic stem and progenitor cells are a heterogeneous population of cells, some of which are long-lived. CXCR4-tropic HIVs infect a broad range of HSPC subtypes, including hematopoietic stem cells, which are multi-potent and long-lived. However, CCR5-tropic HIV infection is limited to more differentiated progenitor cells with life spans that are less well understood. Consistent with emerging data that restricted progenitor cells can be long-lived, we detected persistent HIV in restricted HSPC populations from optimally treated people. Further, genotypic and phenotypic analysis of amplified env alleles from donor samples indicated that both CXCR4- and CCR5-tropic viruses persisted in HSPCs. RNA profiling confirmed expression of HIV receptor RNA in a pattern that was consistent with in vitro and in vivo results. In addition, we characterized a CD4highHSPC sub-population that was preferentially targeted by a variety of CXCR4- and CCR5-tropic HIVs in vitro. Finally, we present strong evidence that HIV proviral genomes of both tropisms can be transmitted to CD4-negative daughter cells of multiple lineages in vivo. In some cases, the transmitted proviral genomes contained signature deletions that inactivated the virus, eliminating the possibility that coincidental infection explains the results. These data support a model in which both stem and non-stem cell progenitors serve as persistent reservoirs for CXCR4- and CCR5-tropic HIV proviral genomes that can be passed to daughter cells.

Original languageEnglish (US)
Article numbere1006509
JournalPLoS Pathogens
Volume13
Issue number7
DOIs
StatePublished - Jul 1 2017

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HIV
Genome
Hematopoietic Stem Cells
Stem Cells
HIV Infections
HIV Receptors
RNA
Population
Viruses
Tropism
Cell Lineage
Alleles
Infection
In Vitro Techniques

ASJC Scopus subject areas

  • Parasitology
  • Microbiology
  • Immunology
  • Molecular Biology
  • Genetics
  • Virology

Cite this

Sebastian, N. T., Zaikos, T. D., Terry, V., Taschuk, F., McNamara, L. A., Onafuwa-Nuga, A., ... Collins, K. L. (2017). CD4 is expressed on a heterogeneous subset of hematopoietic progenitors, which persistently harbor CXCR4 and CCR5-tropic HIV proviral genomes in vivo. PLoS Pathogens, 13(7), [e1006509]. https://doi.org/10.1371/journal.ppat.1006509

CD4 is expressed on a heterogeneous subset of hematopoietic progenitors, which persistently harbor CXCR4 and CCR5-tropic HIV proviral genomes in vivo. / Sebastian, Nadia T.; Zaikos, Thomas D.; Terry, Valeri; Taschuk, Frances; McNamara, Lucy A.; Onafuwa-Nuga, Adewunmi; Yucha, Ryan; Signer, Robert A.J.; Riddell, James; Bixby, Dale; Markowitz, Norman; Morrison, Sean J.; Collins, Kathleen L.

In: PLoS Pathogens, Vol. 13, No. 7, e1006509, 01.07.2017.

Research output: Contribution to journalArticle

Sebastian, NT, Zaikos, TD, Terry, V, Taschuk, F, McNamara, LA, Onafuwa-Nuga, A, Yucha, R, Signer, RAJ, Riddell, J, Bixby, D, Markowitz, N, Morrison, SJ & Collins, KL 2017, 'CD4 is expressed on a heterogeneous subset of hematopoietic progenitors, which persistently harbor CXCR4 and CCR5-tropic HIV proviral genomes in vivo', PLoS Pathogens, vol. 13, no. 7, e1006509. https://doi.org/10.1371/journal.ppat.1006509
Sebastian, Nadia T. ; Zaikos, Thomas D. ; Terry, Valeri ; Taschuk, Frances ; McNamara, Lucy A. ; Onafuwa-Nuga, Adewunmi ; Yucha, Ryan ; Signer, Robert A.J. ; Riddell, James ; Bixby, Dale ; Markowitz, Norman ; Morrison, Sean J. ; Collins, Kathleen L. / CD4 is expressed on a heterogeneous subset of hematopoietic progenitors, which persistently harbor CXCR4 and CCR5-tropic HIV proviral genomes in vivo. In: PLoS Pathogens. 2017 ; Vol. 13, No. 7.
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AU - Terry, Valeri

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