HIV-1 envelope-dependent restriction of CXCR4-using viruses in child but not adult untransformed CD4 + T-lymphocyte lines

Samanta A. Mariani, Immacolata Brigida, Anna Kajaste-Rudnitski, Silvia Ghezzi, Alessia Rocchi, Anna Plebani, Elisa Vicenzi, Alessandro Aiuti, Guido Poli

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Phytohemagglutin-stimulated child and adult leukocytes equally supported CCR5-dependent (R5) and CXCR4-dependent (X4) HIV-1 replication. In contrast, when phytohemagglutin-stimulated leukocytes from either healthy or congenitally immunodeficient children were cultured on feeder cells, they well supported R5, but not X4 HIV-1 replication, whereas both viruses equally spread in adult cells maintained in similar conditions. Both child and adult cells showed similar levels of proliferation and surface expression of CD4, CCR5, CXCR4, CD25, CD69, and HLA-DR. Lack of X4 HIV-1 replication in child versus adult cells was not caused by a differential expression of several known HIV-1 restriction factors. Similar levels of HIV DNA synthesis occurred in child cells infected with R5 and X4 viruses up to 48 hours after infection when R5 HIV-1 showed a significantly superior capacity to spread in culture than X4 virus. Cultured child cells well supported single round vescicular stomatitis virus-G pseudotyped virus replication, whereas superinfection of R5-infected cells with X4 HIV-1 (or vice versa) rescued the replication of this latter virus. Thus, child cells exposed to feeder cell culture represent a novel model system in which the superior capacity of R5 versus X4 viruses to spread can be investigated in primary, untransformed CD4 + cells.

Original languageEnglish
Pages (from-to)2013-2023
Number of pages11
JournalBlood
Volume119
Issue number9
DOIs
Publication statusPublished - Mar 1 2012

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T-cells
Viruses
HIV-1
T-Lymphocytes
Feeder Cells
Virus Replication
Leukocytes
Superinfection
Stomatitis
HLA-DR Antigens
Cell culture
Cultured Cells
Cell Culture Techniques
HIV
DNA
Infection

ASJC Scopus subject areas

  • Hematology
  • Biochemistry
  • Cell Biology
  • Immunology

Cite this

HIV-1 envelope-dependent restriction of CXCR4-using viruses in child but not adult untransformed CD4 + T-lymphocyte lines. / Mariani, Samanta A.; Brigida, Immacolata; Kajaste-Rudnitski, Anna; Ghezzi, Silvia; Rocchi, Alessia; Plebani, Anna; Vicenzi, Elisa; Aiuti, Alessandro; Poli, Guido.

In: Blood, Vol. 119, No. 9, 01.03.2012, p. 2013-2023.

Research output: Contribution to journalArticle

Mariani, Samanta A. ; Brigida, Immacolata ; Kajaste-Rudnitski, Anna ; Ghezzi, Silvia ; Rocchi, Alessia ; Plebani, Anna ; Vicenzi, Elisa ; Aiuti, Alessandro ; Poli, Guido. / HIV-1 envelope-dependent restriction of CXCR4-using viruses in child but not adult untransformed CD4 + T-lymphocyte lines. In: Blood. 2012 ; Vol. 119, No. 9. pp. 2013-2023.
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