HIV-1 replication and gene expression occur at higher levels in neonatal blood naive and memory T-lymphocytes compared with adult blood cells

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5 Scopus citations

Abstract

Our previous study has shown that HIV-1 replicated at higher levels in neonatal (cord) blood monocytes/macrophages and T-lymphocytes compared with adult blood cells. However, it is not known whether this differential HIV-1 replication also occurs in naive and/or memory T-lymphocytes. We, therefore, compared HIV-1 replication in CD3+ and CD4+ naive (CD45RA+) and memory (CD45RO+) T-lymphocytes isolated from five cord and adult blood donors. We found that HIV-1 replicated at higher levels in both CD3+ and CD4+ CD45RA+ and CD45RO+ T-lymphocytes isolated from cord blood compared with adult blood. In addition, there was no difference in the cell surface expression of CD4, CXCR4 and CCR5 on cord blood CD45RA+ and CD45RO+ T-lymphocytes compared with adult blood cells. Furthermore, we found that there was an increase in HIV-1 gene expression in cord blood CD45RA+ and CD45RO+ T-lymphocytes compared with adult blood cells by using a single-cycle replication competent HIV-1-NL4-3-Env-R+ luciferase amphotropic virus, which measures HIV-1 transcriptional activity independent of CD4 and CXCR4 or CCR5 expression. In summary, HIV-1 replicated at higher levels in cord blood CD45RA+ and CD45RO+ T-lymphocytes compared with adult blood cells and this differential replication is influenced at the level of HIV-1 gene expression.

Original languageEnglish (US)
Pages (from-to)39-46
Number of pages8
JournalVirology
Volume413
Issue number1
DOIs
StatePublished - Apr 25 2011

Keywords

  • CD4
  • CXCR4 and CCR5 expression on naive and memory T-lymphocytes
  • Cord and adult blood naive and memory T-lymphocytes
  • HIV-1 gene expression
  • HIV-1 replication in naive and memory T-lymphocytes

ASJC Scopus subject areas

  • Virology

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