Malignant cell membrane lipid raft (None established; "lipid raft" is sometimes abbreviated in literature, but no universal abbreviation is used in this context)

Malignant cell membrane lipid rafts are **small, cholesterol- and sphingolipid-enriched microdomains** within the plasma membrane of cancer cells. They provide a platform for recruiting and concentrating signaling molecules, including receptors and kinases, and physically compartmentalize signal transduction pathways. Malignant cells often have *higher levels of lipid rafts* than non-transformed cells, favoring aggressive phenotypes: growth, migration, invasion, and metastasis. Lipid rafts also serve as scaffolds for assembling complexes that mediate apoptosis (e.g., clustering death receptors like Fas/CD95 for DISC formation and apoptotic signaling). Pharmacological modulation of rafts—by disrupting their organization or aggregating death receptors—can sensitize cancer cells to death or inhibit their survival and invasiveness. Thus, lipid rafts are considered attractive but challenging anticancer therapeutic targets due to their unique lipid composition, regulatory roles in cancer signaling, and wide fundamental involvement in cell physiology

Other names

Lipid raftMembrane raftCholesterol-rich membrane domainSphingolipid-rich domain

Drugs targeting lipid rafts act mainly by: - Disrupting raft formation—reducing cholesterol levels and destabilizing rafts to impair tumor cell signaling, proliferation, migration, and survival - Promoting recruitment/aggregation of death receptors (Fas/CD95, TRAIL receptor)—facilitating apoptosis via clustering of associated signaling molecules in lipid rafts (CASMER formation)