Enhanced detection of antigen-specific T cells by a multiplexed AIM assay.
Cell Rep Methods
; 4(1): 100690, 2024 Jan 22.
Article
en En
| MEDLINE
| ID: mdl-38228152
ABSTRACT
Broadly applicable methods to identify and characterize antigen-specific CD4+ and CD8+ T cells are key to immunology research, including studies of vaccine responses and immunity to infectious diseases. We developed a multiplexed activation-induced marker (AIM) assay that presents several advantages compared to single pairs of AIMs. The simultaneous measurement of four AIMs (CD69, 4-1BB, OX40, and CD40L) creates six AIM pairs that define CD4+ T cell populations with partial and variable overlap. When combined in an AND/OR Boolean gating strategy for analysis, this approach enhances CD4+ T cell detection compared to any single AIM pair, while CD8+ T cells are dominated by CD69/4-1BB co-expression. Supervised and unsupervised clustering analyses show differential expression of the AIMs in defined T helper lineages and that multiplexing mitigates phenotypic biases. Paired and unpaired comparisons of responses to infections (HIV and cytomegalovirus [CMV]) and vaccination (severe acute respiratory syndrome coronavirus 2 [SARS-CoV-2]) validate the robustness and versatility of the method.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Asunto principal:
Linfocitos T CD4-Positivos
/
Linfocitos T CD8-positivos
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
Idioma:
En
Revista:
Cell Rep Methods
Año:
2024
Tipo del documento:
Article
País de afiliación:
Canadá