Endosomal membrane lipids

Endosomal membrane lipids are specialized lipid species, including bis(monoacylglycero)phosphate (BMP) and various phosphoinositides, that define the structural and functional identity of endocytic compartments. These lipids are essential for orchestrating vesicular trafficking, membrane fusion, and the sorting of cargo for degradation or recycling [1]. Beyond their structural roles, they serve as critical signaling platforms and are involved in the regulation of lysosomal enzyme activity [2]. In pathological conditions such as Niemann-Pick disease and other lysosomal storage disorders, the accumulation of specific lipids within endosomes leads to severe cellular dysfunction [3]. Furthermore, many enveloped viruses exploit the unique lipid composition of late endosomes to trigger membrane fusion and release their genetic material into the host cytoplasm [4]. Therapeutic strategies targeting these lipids include the use of small molecules to modulate endosomal pH, chemical chaperones to enhance lipid metabolism, or agents that physically sequester lipids to prevent viral entry [5]. [1] Gruenberg, J. (2020). FEBS Letters. [2] Hullin-Matsuda, F., et al. (2014). Journal of Lipid Research. [3] Platt, F. M., et al. (2012). Nature. [4] White, J. M., & Whittaker, G. R. (2016). Critical Reviews in Microbiology. [5] Salgado-Benviciste, C., et al. (2022). International Journal of Molecular Sciences.

Other names

Endosomal lipidsLate endosomal lipidsBis(monoacylglycero)phosphateLBPABMPLysobisphosphatidic acidEndolysosomal lipids

Modulation of endosomal pH, disruption of lipid-protein interactions required for viral fusion, and enhancement of lipid degradation or efflux from the endolysosomal system.