Host cell signaling and apoptosis pathways

Host cell signaling and apoptosis pathways represent the integrated network of molecular signals and programmed cell death processes that maintain cellular homeostasis and respond to external stimuli (StatPearls, 2023). These pathways, such as the PI3K/Akt/mTOR and the BCL-2 regulated apoptotic cascades, are essential for regulating cell growth, differentiation, and survival (NIH, 2024). Dysregulation of these pathways is a hallmark of various pathologies; for instance, cancer cells often evade apoptosis, while neurodegenerative diseases are characterized by excessive cell death (PubMed). Therapeutic intervention involves using small molecules or biologics to either restore apoptotic pathways in malignant cells or protect healthy cells from premature death (Nature Reviews Drug Discovery). Drugs like Venetoclax specifically target the BCL-2 protein within these pathways to induce apoptosis in leukemia cells (PubChem). However, because these pathways are ubiquitous and critical for normal physiology, targeting them requires high precision to minimize adverse effects on healthy tissues. Overall, these pathways serve as a broad framework for drug discovery rather than a single molecular target.

Other names

Host signaling pathwaysProgrammed cell death pathwaysCellular signaling networksApoptotic signaling cascades

Modulation of intracellular signaling cascades and programmed cell death machinery through inhibition of kinases, proteasomes, or anti-apoptotic proteins (StatPearls, 2023).