Self-tolerant lymphocyte generation

Self-tolerant lymphocyte generation refers to the collection of immune processes that selectively eliminate or deactivate lymphocytes (T and B cells) capable of reacting against self-antigens, thus maintaining self-tolerance and preventing autoimmune disease. These mechanisms include central tolerance (mainly clonal deletion and receptor editing of immature cells in the thymus for T cells and bone marrow for B cells), as well as peripheral tolerance (anergy, suppression by regulatory T cells, and apoptosis through mechanisms like Fas-FasL). Disruption or defects in these processes can result in autoimmunity[1][2][3][4][5][6]. Summary of key mechanisms: - Central tolerance: Negative selection (clonal deletion) of developing lymphocytes in the thymus (T cells) or bone marrow (B cells); receptor editing in B cells[3][4][5]. - Peripheral tolerance: Inactivation of autoreactive cells that escape central tolerance, through Treg-mediated suppression, anergy, or apoptosis mechanisms, such as engagement of PD-1 or Fas[3][5][6]. Why “self-tolerant lymphocyte generation” is not a molecular target: This term describes a set of physiological processes, not a single discrete protein, receptor, or gene product amenable to direct pharmacological targeting. While the pathways and molecules involved (e.g., AIRE, Fas, PD-1, CTLA-4) can be therapeutic targets, "self-tolerant lymphocyte generation" itself is a higher-order functional category describing how tolerance is established and maintained during lymphocyte development and selection[1][3][5][6].

Other names

self-toleranceimmune tolerancecentral toleranceperipheral tolerance