Cancer cell membrane microdomain

Cancer cell membrane microdomains, commonly known as lipid rafts, are small, dynamically organized regions within the plasma membrane that are enriched in cholesterol, sphingolipids, and certain proteins such as caveolin and flotillin[1][3][4][5]. They provide specialized platforms for cell signaling, adhesion, migration, endocytosis, and regulation of protein and lipid trafficking, and they play critical roles in the regulation of cancer cell behavior including growth, survival, metastasis, and drug resistance[1][3][4][5]. These microdomains can concentrate or exclude specific signaling molecules, thus modulating the efficacy of receptor-mediated signaling pathways relevant to tumor progression and therapy resistance. While there is intense research focus on targeting the unique properties of cancer cell membrane microdomains to overcome resistance and inhibit metastasis, these microdomains do not represent a single molecular target, but rather a collective functional entity composed of multiple lipids and proteins[1][4][5][6]. Therefore, "Cancer cell membrane microdomain" is not a specific druggable target like a receptor, enzyme, or transporter, but instead a structural principle influencing many potential therapeutic targets.

Other names

Lipid raftMembrane raftLipid microdomainMembrane microdomainCaveola

Disruption of lipid raft structure to sensitize cancer cells to apoptosis; Targeting cholesterol content and organization to alter membrane protein function; Modulation of raft-associated signaling pathways