Immunosuppression

Immunosuppression refers to the reduction of the activation or efficacy of the immune system, which can occur as a result of disease or be deliberately induced through medical intervention. In clinical practice, therapeutic immunosuppression is essential for preventing the rejection of transplanted organs and for managing autoimmune disorders such as rheumatoid arthritis and systemic lupus erythematosus (StatPearls, 2023). This state is achieved using a diverse array of pharmacological agents that target specific components of the immune response, including T-cell signaling, cytokine production, and lymphocyte proliferation (NIH, 2024). While these therapies are critical for controlling unwanted immune activity, they inherently increase a patient's vulnerability to opportunistic infections and certain malignancies due to diminished immune surveillance (Mayo Clinic, 2023). Because the term describes a broad biological outcome rather than a specific protein or receptor, it is classified as a pharmacological effect or biological process rather than a discrete molecular target.

Other names

Immunological suppressionImmune suppressionImmunodepressionImmunocompromised state

Immunosuppression is a physiological state or therapeutic outcome rather than a single molecular mechanism; it is achieved through various pathways such as the inhibition of calcineurin, blockade of mTOR signaling, disruption of nucleotide synthesis, or the antagonism of specific cytokines like TNF-alpha and IL-2 (StatPearls, 2023).