Cited by 186HIV Research and TreatmentT-cell and B-cell ImmunologyClinical Laboratory Practices and Quality Control

Effects of cryopreservation on lymphocyte immunophenotype and function

Costantini, A., Mancini, S., Giuliodoro, S., Butini, L., Regnery, C.M., Silvestri, G., Montroni, M.·2003·Journal of Immunological Methods

Abstract

Cryopreservation of isolated peripheral blood mononuclear cells (PBMCs) for phenotypic and functional analyses is considered a standard procedure in order to minimize operator-dependent inter-assay variability and to optimize the use of available resources. However, only few and somewhat conflicting data are presently available on the effects of cryopreservation on PBMCs, especially in samples from HIV-infected patients in which assessment of lymphocyte phenotype and function is of the outmost importance. In this study, we compared fresh versus frozen/thawed (F/T) samples isolated from 19 healthy individuals and 21 HIV-infected patients, showing that cryopreservation induces: (i) a profound decrease of CD62L expression, with a consequent significant decline of the calculated proportions of "naïve" (CD45RA+CD62L+) and "central memory" (CD45RO+CD62L+) T cells; (ii) an increase of the calculated proportions of "effector" CD8+ T cells (CD45RA+CD62L- and CD45RO+CD62L-) in the healthy subjects, while no changes were observed in the HIV-infected group; (iii) a significant decline of CC chemokine receptor 5 (CCR5) expression; (iv) a loss of proliferative responses to some HIV antigens (i.e. p24) and recall antigens [cytomegalovirus (CMV) and Influenza] in HIV-infected patients. We thus conclude that cryopreservation induces a consistent set of changes in PBMCs from both healthy and HIV-infected individuals, and that certain immunological studies of HIV-infected patients (i.e. studies of immune reconstitution following antiretroviral therapy in HIV-infected patients or studies of HIV-infectivity in vitro using CCR5-tropic strains) should be performed on fresh samples.

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Crossref · 10.1016/s0022-1759(03)00202-3

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Authors
Costantini, A., Mancini, S., Giuliodoro, S., Butini, L., Regnery, C. M., Silvestri, G., & Montroni, M.
Affiliations
  • Emory University (US)
  • Azienda Ospedaliero-Universitaria delle Marche (IT)
Corresponding author
Montroni, M.
Venue
Journal of Immunological Methods
Publisher
Elsevier BV
Published
2003-07
Volume
278
Issue
1-2
Pages
145-155
ISSN
0022-1759 (ISSN-L)
OpenAlex
W2060902798
Cited by
185
References
18
Citations by year
2026: 3 · 2025: 10 · 2024: 7 · 2023: 12 · 2022: 9 · 2021: 15 · 2020: 13 · 2019: 6 · 2018: 15 · 2017: 7 · 2016: 8 · 2015: 7 · 2014: 13 · 2013: 9 · 2012: 7
FWCI
2.00
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Immunological Methods (publishedVersion)
  • PubMed (publishedVersion)
  • Università Politecnica delle Marche (Università Politecnica delle Marche) (submittedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Physiology › Clinical Laboratory Practices and Quality Control
Keywords
cryopreservation, peripheral blood mononuclear cells, lymphocyte immunophenotype, HIV infection, L-selectin, CCR5, naive T cells, central memory T cells, CD8+ effector T cells, T cell proliferation, p24 antigen, cytomegalovirus, influenza, sample storage
MeSH terms
Humans, Immunity, Cellular, T-Lymphocytes, HIV Infections, Cryopreservation, Immunophenotyping, T-Lymphocyte Subsets, L-Selectin, Receptors, CCR5

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