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Modulation of Lipid Rafts by Ω‐3 Fatty Acids in Inflammation and Cancer: Implications for Use of Lipids During Nutrition Support
Author(s) -
Siddiqui Rafat A.,
Harvey Kevin A.,
Zaloga Gary P.,
Stillwell William
Publication year - 2007
Publication title -
nutrition in clinical practice
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 71
eISSN - 1941-2452
pISSN - 0884-5336
DOI - 10.1177/011542650702200174
Subject(s) - lipid raft , raft , sphingolipid , microbiology and biotechnology , membrane lipids , function (biology) , signal transduction , cholesterol , cell signaling , inflammation , biochemistry , chemistry , membrane , biology , immunology , organic chemistry , copolymer , polymer
Current understanding of biologic membrane structure and function is largely based on the concept of lipid rafts. Lipid rafts are composed primarily of tightly packed, liquid‐ordered sphingolipids/cholesterol/saturated phospholipids that float in a sea of more unsaturated and loosely packed, liquid‐disordered lipids. Lipid rafts have important clinical implications because many important membrane‐signaling proteins are located within the raft regions of the membrane, and alterations in raft structure can alter activity of these signaling proteins. Because rafts are lipid‐based, their composition, structure, and function are susceptible to manipulation by dietary components such as ω‐3 polyunsaturated fatty acids and by cholesterol depletion. We review how alteration of raft lipids affects the raft/nonraft localization and hence the function of several proteins involved in cell signaling. We focus our discussion of raft‐signaling proteins on inflammation and cancer.