Cancer cell lipid rafts

Cancer cell lipid rafts are dynamic subcellular membrane structures, specifically cholesterol- and sphingolipid-enriched microdomains of the plasma membrane. They are not discrete molecular entities like receptors or enzymes, and therefore, are not considered suitable therapeutic targets in the conventional sense. Instead, they function as organizational platforms that regulate the activity and localization of actual therapeutic targets, such as CD44, integrins, Src family kinases, receptor tyrosine kinases (e.g., EGF receptor, IGF receptor), and caveolin-1. Therapeutic strategies typically involve targeting these associated molecules or indirectly disrupting raft integrity through cholesterol depletion (e.g., with methyl-beta-cyclodextrin or statins).

Other names

Lipid raftsCholesterol- and sphingolipid-enriched microdomainsPlasma membrane microdomainsFunctional organizing platforms

Lipid rafts are not directly targeted. Drugs affecting lipid rafts typically work by: 1. Disrupting membrane microdomain integrity through cholesterol depletion. 2. Modulating the function of specific proteins localized within lipid rafts.