TACI signaling promotes the survival of B cells and disrupts immune regulation in both chronic lymphocytic leukemia and systemic lupus erythematosus, contributing to disease development in both...
Mechanism
Synthesis from 1 study
Blocking TACI stops harmful B cells from surviving too long and making antibodies that attack the body. This also fixes the immune system’s ability to tell the difference between real threats and the body’s own tissues, stopping both cancer progression and autoimmune damage at the same time.
Most probable mechanism
When TACI is blocked, harmful B cells that survive too long and make damaging antibodies die off, while the immune system regains its ability to distinguish between the body's own tissues and foreign invaders. This stops both cancer growth and autoimmune damage without weakening normal defenses.
TACI receptor binding by BAFF or APRIL ligands activates the NF-κB signaling pathway in B cells
NF-κB activation increases expression of survival factors, immunosuppressive cytokines (IL-10, TNF), and checkpoint molecules (PD-L1, PD-L2) in pathogenic B cells
Elevated immunosuppressive molecules inhibit T-cell function and promote migration of abnormal B cells to lymphoid tissues
Sustained TACI signaling enhances germinal center activity and T follicular helper cell expansion, driving autoreactive plasma cell differentiation
Blockade of TACI signaling reduces NF-κB activation, leading to decreased survival of pathogenic B cells and loss of immunosuppressive signals
Reduced germinal center dysregulation and T follicular helper cell activity normalize B-cell selection and suppress autoantibody production
Loss of pathogenic B-cell survival and autoantibody production halts tissue damage and tumor microenvironment formation
Evidence from Studies
Supporting (1)
Community contributions welcome
Abstract PR-06: Disrupting TACI signaling to restore immune balance: harnessing translational opportunities at the intersection of cancer and autoimmunity
Contradicting (0)
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