Immune homeostasis

Immune homeostasis refers to the dynamic equilibrium within the immune system that allows effective defense against pathogens while preventing excessive or inappropriate responses that could result in tissue injury or autoimmune diseases. This state depends on tightly regulated mechanisms involving activation thresholds for immune cells, controlled proliferation and apoptosis rates among lymphocytes and myeloid cells, feedback from regulatory cell populations such as Tregs and Bregs, cytokine milieu adjustments (e.g., IL‑10), pattern recognition receptors like toll-like receptors (TLRs), and cross-talk between innate/adaptive immunity[1][4][7]. Disruption in these processes leads directly to pathological conditions including chronic inflammation, autoimmunity, immunodeficiency syndromes—and even cancer due to loss of surveillance[2][10]. "Immune homeostasis" should not be treated as an individual drug target. It represents an emergent property resulting from complex interactions among numerous molecular targets within the broader network regulating immunity.

Other names

Immunological homeostasisImmune equilibriumImmunohomeostasis

Mechanisms relate to modulation of various components that contribute to immune balance—such as cytokines, checkpoint inhibitors—but there is no direct mechanism for "immune homeostasis" itself.