CD4+ T cell proliferation signaling pathways (JNK, ERK, and PI3K-AKT regulated)

The process described encompasses the canonical intracellular signaling cascades regulating CD4+ T cell activation, survival, and proliferation. Engagement of the T cell receptor (TCR) and co-stimulatory molecules activates signaling pathways such as PI3K/AKT, ERK (a MAP kinase), and JNK (c-Jun N-terminal kinase), which orchestrate gene expression, metabolism, cell cycle progression, and cell survival. These pathways not only drive immune responses but are critical in maintaining the balance between tolerance and activation. Dysregulation is implicated in cancer, autoimmune disease, and immunodeficiency disorders. Each pathway includes multiple kinases and adaptors, not a single target.

Other names

T cell proliferation signaling pathwaysCD4+ T cell activation pathwaysPI3K/AKT, ERK, and JNK cascades in T cell proliferation

Inhibition or modulation of PI3K, AKT, ERK, or JNK kinases to alter T cell proliferation, survival, or immune function; mTOR inhibition (rapamycin impairs T cell proliferation by targeting a downstream effector)