Expansion or Depletion of T Follicular Helper Cells During HIV Infection: Consequences for B cell Responses

ISSN: 1873-4251 (Online)
ISSN: 1570-162X (Print)


Volume 12, 6 Issues, 2014


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Current HIV Research

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Editor-in-Chief:
Charles Wood
University of Nebraska
Lincoln, NE
USA


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Expansion or Depletion of T Follicular Helper Cells During HIV Infection: Consequences for B cell Responses

Author(s): Olusegun O. Onabajo and Joseph J. Mattapallil

Affiliation: Department of Microbiology & Immunology, Uniformed Services University, Bethesda, MD 20814, USA.

Abstract

HIV infection is characterized by aberrant B cell responses and B cell dysfunction. These dysfunctional responses have been extensively documented in peripheral blood and organized lymphoid tissues such as the lymph nodes. Though the loss of CD4 T cell help has been thought to play a key role in dysfunctional B cell responses, recent studies have implicated a subset of CD4 T helper cells called the T follicular helper (Tfh) cells in this process. Tfh cells interact with B cells and play a key role in mediating the germinal center reaction, and driving the differentiation and maturation of B cells. Why Tfh expands in some HIV infected individuals as compared to their loss in others is still not clear. Here we review some of the recent developments in the field and discuss the implications of Tfh cell dysregulation on B cell responses during HIV infection.

Keywords: B cells, HIV, IL-21, SIV, Simian, Tfh.

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Article Details

Volume: 11
Issue Number: 8
First Page: 595
Last Page: 600
Page Count: 6
DOI: 10.2174/1570162X12666140225153552
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