Diminished proliferation of human immunodeficiency virus-specific CD4 + T cells is associated with diminished interleukin-2 (IL-2) production and is recovered by exogenous IL-2

Christiana Iyasere, John C. Tilton, Alison J. Johnson, Souheil Younes, Bader Yassine-Diab, Rafick Pierre Sekaly, William W. Kwok, Stephen A. Migueles, Alisha C. Laborico, W. Lesley Shupert, Claire W. Hallahan, Richard T. Davey, Mark Dybul, Susan Vogel, Julia Metcalf, Mark Connors

Research output: Contribution to journalArticle

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Abstract

Virus-specific CD4+ T-cell function is thought to play a central role in induction and maintenance of effective CD8+ T-cell responses in experimental animals or humans. However, the reasons that diminished proliferation of human immunodeficiency virus (HIV)-specific CD4 + T cells is observed in the majority of infected patients and the role of these diminished responses in the loss of control of replication during the chronic phase of HIV infection remain incompletely understood. In a cohort of 15 patients that were selected for particularly strong HIV-specific CD4 + T-cell responses, the effects of viremia on these responses were explored. Restriction of HIV replication was not observed during one to eight interruptions of antiretroviral therapy in the majority of patients (12 of 15). In each case, proliferative responses to HIV antigens were rapidly inhibited during viremia. The frequencies of cells that produce IFN-γ in response to Gag, Pol, and Nef peptide pools were maintained during an interruption of therapy. In a subset of patients with elevated frequencies of interleukin-2 (IL-2) -producing cells, IL-2 production in response to HIV antigens was diminished during viremia. Addition of exogenous IL-2 was sufficient to rescue in vitro proliferation of DR0101 class II Gag or Pol tetramer+ or total-Gag-specific CD4+ T cells. These observations suggest that, during viremia, diminished in vitro proliferation of HIV-specific CD4 + T cells is likely related to diminished IL-2 production. These result: also suggest that relatively high frequencies of HIV-specific CD4 + T cells persist in the peripheral blood during viremia, are not replicatively senescent, and proliferate when IL-2 is provided exogenously.

Original languageEnglish (US)
Pages (from-to)10900-10909
Number of pages10
JournalJournal of Virology
Volume77
Issue number20
DOIs
StatePublished - Oct 2003
Externally publishedYes

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Human immunodeficiency virus
interleukin-2
Interleukin-2
viremia
T-lymphocytes
HIV
Viremia
T-Lymphocytes
antigens
therapeutics
Antigens
HIV infections
virus replication
Virus Diseases
Virus Replication
laboratory animals
peptides
cells
viruses
Viruses

ASJC Scopus subject areas

  • Immunology
  • Virology

Cite this

Diminished proliferation of human immunodeficiency virus-specific CD4 + T cells is associated with diminished interleukin-2 (IL-2) production and is recovered by exogenous IL-2. / Iyasere, Christiana; Tilton, John C.; Johnson, Alison J.; Younes, Souheil; Yassine-Diab, Bader; Sekaly, Rafick Pierre; Kwok, William W.; Migueles, Stephen A.; Laborico, Alisha C.; Shupert, W. Lesley; Hallahan, Claire W.; Davey, Richard T.; Dybul, Mark; Vogel, Susan; Metcalf, Julia; Connors, Mark.

In: Journal of Virology, Vol. 77, No. 20, 10.2003, p. 10900-10909.

Research output: Contribution to journalArticle

Iyasere, C, Tilton, JC, Johnson, AJ, Younes, S, Yassine-Diab, B, Sekaly, RP, Kwok, WW, Migueles, SA, Laborico, AC, Shupert, WL, Hallahan, CW, Davey, RT, Dybul, M, Vogel, S, Metcalf, J & Connors, M 2003, 'Diminished proliferation of human immunodeficiency virus-specific CD4 + T cells is associated with diminished interleukin-2 (IL-2) production and is recovered by exogenous IL-2', Journal of Virology, vol. 77, no. 20, pp. 10900-10909. https://doi.org/10.1128/JVI.77.20.10900-10909.2003
Iyasere, Christiana ; Tilton, John C. ; Johnson, Alison J. ; Younes, Souheil ; Yassine-Diab, Bader ; Sekaly, Rafick Pierre ; Kwok, William W. ; Migueles, Stephen A. ; Laborico, Alisha C. ; Shupert, W. Lesley ; Hallahan, Claire W. ; Davey, Richard T. ; Dybul, Mark ; Vogel, Susan ; Metcalf, Julia ; Connors, Mark. / Diminished proliferation of human immunodeficiency virus-specific CD4 + T cells is associated with diminished interleukin-2 (IL-2) production and is recovered by exogenous IL-2. In: Journal of Virology. 2003 ; Vol. 77, No. 20. pp. 10900-10909.
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abstract = "Virus-specific CD4+ T-cell function is thought to play a central role in induction and maintenance of effective CD8+ T-cell responses in experimental animals or humans. However, the reasons that diminished proliferation of human immunodeficiency virus (HIV)-specific CD4 + T cells is observed in the majority of infected patients and the role of these diminished responses in the loss of control of replication during the chronic phase of HIV infection remain incompletely understood. In a cohort of 15 patients that were selected for particularly strong HIV-specific CD4 + T-cell responses, the effects of viremia on these responses were explored. Restriction of HIV replication was not observed during one to eight interruptions of antiretroviral therapy in the majority of patients (12 of 15). In each case, proliferative responses to HIV antigens were rapidly inhibited during viremia. The frequencies of cells that produce IFN-γ in response to Gag, Pol, and Nef peptide pools were maintained during an interruption of therapy. In a subset of patients with elevated frequencies of interleukin-2 (IL-2) -producing cells, IL-2 production in response to HIV antigens was diminished during viremia. Addition of exogenous IL-2 was sufficient to rescue in vitro proliferation of DR0101 class II Gag or Pol tetramer+ or total-Gag-specific CD4+ T cells. These observations suggest that, during viremia, diminished in vitro proliferation of HIV-specific CD4 + T cells is likely related to diminished IL-2 production. These result: also suggest that relatively high frequencies of HIV-specific CD4 + T cells persist in the peripheral blood during viremia, are not replicatively senescent, and proliferate when IL-2 is provided exogenously.",
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AU - Sekaly, Rafick Pierre

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AU - Shupert, W. Lesley

AU - Hallahan, Claire W.

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AU - Vogel, Susan

AU - Metcalf, Julia

AU - Connors, Mark

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