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Effects of cryopreservation on CD4+ CD25+ T cells of HIV-1 infected individuals
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Seale, Anna C., de Jong, Bouke C., Zaidi, Irfan, Duvall, Melody, Whittle, Hilton, Rowland-Jones, Sarah and Jaye, Assan (2008) Effects of cryopreservation on CD4+ CD25+ T cells of HIV-1 infected individuals. Journal of Clinical Laboratory Analysis, 22 (3). pp. 153-158. doi:10.1002/jcla.20234 ISSN 08878013.
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Official URL: http://dx.doi.org/10.1002/jcla.20234
Abstract
The role of T regulatory cells (Tregs) in human immunodeficiency virus (HIV)-1 infection, although not entirely clear, has recently been highlighted. Despite their lack of specificity, fluorochrome-labeled CD4 and CD25 antibodies are common flow cytometric reagents used to identify these cells with immunosuppressive potential. Cryopreservation has previously been shown to alter the proportions of lymphocytes with certain phenotypes expressed in peripheral blood mononuclear cells (PBMCs). The aim of this study was to assess the effect of cryopreservation on CD4+ CD25+ T cells in PBMCs from HIV-1+ individuals to guide the design of future studies on Tregs. We recruited 30 HIV-1+ individuals and nine healthy controls. CD25 expression in CD4+ T cells was compared between fresh and frozen/thawed PBMC samples from the same time point. In this study, cryopreservation significantly decreased the proportion of CD4+ CD25+ T cells in PBMC samples from HIV-1 infected subjects. This finding suggests that studies of CD4+ CD25+ T cells should be carried out on fresh samples to avoid bias introduced by cryopreservation.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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Journal or Publication Title: | Journal of Clinical Laboratory Analysis | ||||||||
Publisher: | John Wiley & Sons, Inc. | ||||||||
ISSN: | 08878013 | ||||||||
Official Date: | 2008 | ||||||||
Dates: |
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Volume: | 22 | ||||||||
Number: | 3 | ||||||||
Page Range: | pp. 153-158 | ||||||||
DOI: | 10.1002/jcla.20234 | ||||||||
Status: | Peer Reviewed | ||||||||
Access rights to Published version: | Open Access (Creative Commons) |
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