Tumor cell membrane lipid raft (null)

Tumor cell membrane lipid rafts are small (10–200 nm), heterogeneous, cholesterol- and sphingolipid-enriched microdomains in the plasma membrane that serve as organizing centers for signaling, adhesion, and trafficking proteins in tumor cells[3][5][6]. They facilitate compartmentalization of receptors and signaling molecules, modulate processes such as migration, apoptosis, and drug resistance, and are often more abundant or altered in cancer cells compared to normal cells[1][3][5][6]. Disruption or targeting of lipid raft integrity can interfere with multiple pathways involved in tumor progression and is an active area of therapeutic research[1][2][6][8].

Other names

Lipid raftMembrane raftMembrane microdomainCholesterol-rich microdomain

Disruption of raft integrity by depleting cholesterol leads to impaired receptor signaling and promotes apoptosis (e.g., with statins, methyl-β-cyclodextrin); Promoting clustering or recruitment of death receptors in rafts facilitates apoptotic signaling (e.g., with perifosine, edelfosine); Modulation of raft-associated signaling pathways (e.g., PI3K/AKT, IGF, Fas/CD95, Wnt/β-catenin)