The TH cell differentiation pathway is one of the most critical regulatory networks in the establishment of adaptive immune responses. Under the combined influence of antigen stimulation, costimulatory signals, and the cytokine microenvironment, naïve CD4+ T cells progressively differentiate ...
CTLA4 is a key negative regulatory molecule within the T-cell costimulatory network and participates in setting the threshold for initial activation, limiting clonal expansion, mediating Treg-dependent immunosuppression, and maintaining peripheral tolerance. Analysis of the CTLA4 pathway should ...