Omega-3 polyunsaturated fatty acid metabolic pathway

The omega‑3 polyunsaturated fatty acid metabolic pathway is not a single molecule or receptor but rather a series of interconnected biochemical reactions responsible for the synthesis, elongation, desaturation, incorporation into lipids, transport, and degradation of omega‑3 polyunsaturated fatty acids such as alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). These processes involve multiple enzymes—such as desaturases and elongases—and occur across various cellular compartments including the endoplasmic reticulum. The products play critical roles in maintaining cell membrane structure/functionality; regulating gene expression via nuclear receptors like peroxisome proliferator–activated receptors; serving as precursors for anti-inflammatory lipid mediators like resolvins; influencing cardiovascular health by lowering triglycerides; modulating immune responses; supporting neurodevelopmental processes; among other functions. Disruption or inefficiency within this metabolic network can contribute to diseases related to inflammation, cardiovascular dysfunctions, neurological conditions, or general lipid metabolism disorders.

Other names

Omega-3 PUFA biosynthetic pathwayOmega-3 fatty acid synthesis pathwayn-3 PUFA metabolic pathwayLong-chain omega-3 fatty acid biosynthesis

Drugs targeting this metabolic pathway generally act by supplementing or altering the levels of long-chain omega‑3 PUFAs in the body. This can lead to changes in lipid profiles (e.g., lowering triglycerides), modulation of inflammatory mediators through altered eicosanoid production, and effects on cell signaling pathways involved in cardiovascular health and inflammation.