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Monitoring of Immune Memory by Phenotypical Lymphocyte Subsets Identikit: An Observational Study in a Blood Donors' Cohort

Abstract

The cross-talk between the innate and adaptive immune response represents the first defense weapon against the threat of pathogens. Substantial evidence has shown a relationship between immune phenotype lymphocytes and COVID-19 disease severity and/or implication in susceptibility to SARS-CoV-2 infection. Recently, belonging to ABO blood groups has been investigated as a correlation factor to COVID-19 disease. This pilot study investigated lymphocyte typing in a cohort of blood donors to understand the underlying mechanism in SARS-CoV-2 infection linked to the blood group. The study cohort consisted of 20-64-year-old subjects, without comorbidities, from both sexes, who were COVID-19 vaccinated with previous or no infection history. Whole blood samples, collected at A.O.R.N. Sant'Anna and San Sebastiano Hospital (Campania Region), were processed by multiparametric cytofluorimetric assay, to characterize CD4+ helper and CD8+ cytotoxic T cell CD3+ subpopulations. The CD45RA, CCR7, CD27, CD28, CD57 and PD-1 markers were investigated to delineate the peripheral T-cell maturation stages. Differences were detected in ABO blood types in CD3+, CD4+ gated on CD3+, CD8+ and CD8+ gated on CD3+ percentage. These results contribute to identifying a memory cell "identikit" profile in COVID-19 disease, thus leading to a useful tool in precision medicine.

References
1.
Gutcher I, Becher B . APC-derived cytokines and T cell polarization in autoimmune inflammation. J Clin Invest. 2007; 117(5):1119-27. PMC: 1857272. DOI: 10.1172/JCI31720. View

2.
Sallusto F, Lenig D, Forster R, Lipp M, Lanzavecchia A . Two subsets of memory T lymphocytes with distinct homing potentials and effector functions. Nature. 1999; 401(6754):708-12. DOI: 10.1038/44385. View

3.
Vitiello A, Ferrara F, Auti A, Di Domenico M, Boccellino M . Advances in the Omicron variant development. J Intern Med. 2022; 292(1):81-90. PMC: 9115048. DOI: 10.1111/joim.13478. View

4.
Farber D, Netea M, Radbruch A, Rajewsky K, Zinkernagel R . Immunological memory: lessons from the past and a look to the future. Nat Rev Immunol. 2016; 16(2):124-8. DOI: 10.1038/nri.2016.13. View

5.
Hoseinnezhad T, Soltani N, Ziarati S, Behboudi E, Mousavi M . The role of HLA genetic variants in COVID-19 susceptibility, severity, and mortality: A global review. J Clin Lab Anal. 2024; 38(1-2):e25005. PMC: 10829690. DOI: 10.1002/jcla.25005. View