Neutrophil apoptosis pathways

Neutrophil apoptosis pathways encompass the programmed cell death mechanisms essential for maintaining leukocyte homeostasis and ensuring the timely resolution of the innate immune response (PubMed: 17438525). Neutrophils are short-lived cells whose survival is tightly regulated by the balance of Bcl-2 family proteins, particularly the rapidly turned-over anti-apoptotic protein Myeloid Cell Leukemia-1 (Mcl-1) (PubMed: 15905536). Dysregulation of these pathways, such as delayed apoptosis, is a hallmark of chronic inflammatory diseases like rheumatoid arthritis and cystic fibrosis, where persistent neutrophil activity causes collateral tissue damage (PubMed: 21464368). Conversely, accelerated apoptosis can lead to neutropenia and increased susceptibility to infections. Pharmacological modulation of these pathways involves using cyclin-dependent kinase (CDK) inhibitors to promote Mcl-1 degradation or glucocorticoids to extend neutrophil lifespan in specific clinical contexts (PubMed: 16645037, 10438910). Understanding these pathways is crucial for developing therapies that can either clear inflammatory infiltrates or bolster the immune system during overwhelming sepsis.

Other names

Neutrophil programmed cell deathNeutrophil constitutive apoptosisResolution of inflammation pathwaysSpontaneous neutrophil apoptosis

Modulation of Mcl-1 stability, inhibition of CDK9, activation of Caspase cascades, and regulation of Bcl-2 family proteins