Metabolic and Signaling Pathways

Metabolic and Signaling Pathways refers to the comprehensive set of chemical reactions and communication networks that maintain cellular life and coordinate responses to environmental cues. Metabolism involves the conversion of nutrients into energy and building blocks, while signaling pathways transmit information from the cell surface to the nucleus to regulate gene expression and cellular behavior (KEGG: Kyoto Encyclopedia of Genes and Genomes, 2023). This term is a functional category rather than a specific therapeutic target; it encompasses thousands of distinct proteins, including enzymes, receptors, and transcription factors. In clinical pharmacology, drugs are designed to modulate specific nodes within these pathways—such as the PI3K/AKT/mTOR signaling pathway or the glycolysis metabolic pathway—rather than the entire system at once (Nature Reviews Drug Discovery, 2021). Because it lacks a single molecular identity or a discrete binding site, it is classified as an incorrect target designation for drug development purposes.

Other names

Cellular pathwaysBiochemical pathwaysSignal transduction networksMetabolic networks

Not applicable as this is a broad category of biological processes rather than a single molecular target.