Exploring Oxylipins in Host–Microbe Interactions and Their Impact on Infection and Immunity
2025
Robert J. Neff | Christopher D. Radka
Plasma lipids are essential components of biological systems, transported through interactions with proteins to maintain cellular functions. These lipids exist in various forms, such as fatty acids, glycerolipids, glycerophospholipids, sphingolipids, sterols, and prenol lipids, derived from dietary intake, adipose tissue, and biosynthesis. While the association between certain fatty acids and cardiovascular diseases has been widely recognized, polyunsaturated fatty acids (PUFAs) exhibit cardioprotective effects, reducing risks of arrhythmias and heart-related mortality. This is due to their role in the production of eicosanoids, which modulate inflammation. Chronic inflammation, particularly in obesity, is significantly influenced by fatty acids, with saturated fatty acids promoting inflammation and PUFAs mitigating it. Oxylipins, bioactive molecules derived from the oxidation of PUFAs, play crucial roles in immune regulation across various organisms, including plants, fungi, and bacteria. These molecules, such as prostaglandins, leukotrienes, and resolvins, regulate immune responses during infection and inflammation. The production of oxylipins extends beyond mammals, with fungi and bacteria synthesizing these molecules to modulate immune responses, promoting both defense and pathogenesis. This review delves into the multifaceted effects of oxylipins, exploring their impact on host and microbial interactions, with a focus on their potential for therapeutic applications in modulating infection and immune response.
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