Expression of the Activation Antigen CD69 Predicts Functionality of in Vitro Expanded Peripheral Blood Mononuclear Cells (PBMC) from Healthy Donors and HIV-infected Patients
Overview
Affiliations
Gene therapy for AIDS necessitates harvest and expansion of PBMC from HIV-infected patients. We expanded PBMC from healthy blood donors and HIV-infected patients for up to 14 days using four expansion protocols: 3 days of phytohaemagglutinin (PHA) stimulation, continuous PHA stimulation, 3 days of stimulation with anti-CD3 and anti-CD28, and continuous stimulation with anti-CD3 and anti-CD28. Functionality of PBMC was evaluated prior to and after expansion using standard proliferation assay. Phenotype and lymphocyte subset activation defined by expression of CD69 and CD25 were determined using flow cytometry. PBMC from healthy donors and HIV-infected patients were readily expanded. The best expansion was obtained using stimulation for 3 days. After expansion, functionality of PBMC measured as proliferative response was partly conserved. PBMC expanded with stimulation for 3 days exhibited more preserved functionality than PBMC stimulated continuously (P < 0.03). The mean proliferative response in each of the four different expansion protocols correlated with the mean values of CD69 expression. The proliferative responses from patients and healthy donors expanded with PHA stimulation for 3 days correlated with CD69 expression on CD4 cells (r = 0.68, P < 0.01) and on CD8 cells (r = 0.59, P < 0.03). Furthermore, expression of CD69 reliably predicted which patients and donors had highly conserved functionality after in vitro expansion. Finally, PBMC expanded with PHA stimulation for 3 days were examined for apoptosis. Only a minor fraction was primed for apoptosis, and this fraction could be significantly reduced by addition of IL-2 to the culture medium (P < 0.05). In conclusion, the feasibility of expanding PBMC from HIV patients was demonstrated. Expanded PBMC had conserved functionality. Finally, after in vitro expansion, expression of the activation antigen CD69 reliably predicted functionality of PBMC.
Short-term assays for mesenchymal stromal cell immunosuppression of T-lymphocytes.
Herzig M, Christy B, Montgomery R, Cantu-Garza C, Barrera G, Lee J Front Immunol. 2023; 14:1225047.
PMID: 37822938 PMC: 10562633. DOI: 10.3389/fimmu.2023.1225047.
A method for expansion of T cells from cynomolgus monkey (Macaca fascicularis).
Gao C, Song Q, Zhang M, Li J, Yi M, Dong J In Vitro Cell Dev Biol Anim. 2018; 54(8):549-554.
PMID: 30112696 DOI: 10.1007/s11626-018-0278-y.
CD32 expression is associated to T-cell activation and is not a marker of the HIV-1 reservoir.
Badia R, Ballana E, Castellvi M, Garcia-Vidal E, Pujantell M, Clotet B Nat Commun. 2018; 9(1):2739.
PMID: 30013105 PMC: 6048139. DOI: 10.1038/s41467-018-05157-w.
Fraiberk M, Hajkova M, Krulova M, Kojzarova M, Drda Moravkova A, Psikal I PLoS One. 2017; 12(9):e0184870.
PMID: 28922413 PMC: 5602543. DOI: 10.1371/journal.pone.0184870.
Chen R, Xiang F, Hu J, Cao X, Tan X, Jia P Ren Fail. 2017; 39(1):547-554.
PMID: 28726529 PMC: 6014306. DOI: 10.1080/0886022X.2017.1349672.