Cellular signaling and survival pathways

Cellular signaling and survival pathways represent the integrated networks of biochemical reactions, such as the PI3K/AKT/mTOR and MAPK/ERK cascades, that translate extracellular stimuli into specific cellular responses like growth, differentiation, and survival (Source: NIH, National Cancer Institute). These pathways are critical for maintaining cellular homeostasis and ensuring that cells only proliferate or survive when appropriate environmental cues are present (Source: Nature Reviews Molecular Cell Biology). In many diseases, particularly oncology, these pathways are frequently hijacked or dysregulated through mutations or overexpression, leading to uncontrolled cell division and resistance to programmed cell death (Source: StatPearls). While these pathways contain numerous high-value therapeutic targets, the term itself refers to a broad biological category rather than a single protein or receptor (Source: PubMed). Consequently, pharmacological intervention focuses on specific components within these networks to restore normal signaling or selectively eliminate diseased cells, though such strategies must account for the essential role these pathways play in healthy tissue (Source: Journal of Clinical Investigation).

Other names

Cell survival signalingIntracellular signaling cascadesSignal transduction pathwaysSurvival signaling networks

Drugs targeting these pathways typically function by inhibiting specific enzymatic nodes (e.g., kinases like PI3K, AKT, or MEK), blocking cell surface receptors (e.g., EGFR), or modulating downstream effectors to arrest growth or induce apoptosis in aberrant cells (Source: PubMed, Nature Reviews Drug Discovery).