Endolysosomal compartment

The endolysosomal compartment is a dynamic network of membrane-bound organelles, including endosomes and lysosomes, responsible for the sorting, trafficking, and degradation of macromolecules [1]. It serves as a central hub for cellular metabolism and nutrient sensing, primarily through the recruitment of the mTORC1 complex to the lysosomal membrane [2]. This system facilitates the uptake of extracellular materials via endocytosis and the recycling of intracellular components through autophagy [1]. Dysregulation of the endolysosomal pathway is a hallmark of several pathologies, including lysosomal storage disorders and neurodegenerative diseases like Alzheimer's and Parkinson's [3]. In these conditions, the failure of the compartment to degrade proteins or lipids leads to toxic cellular accumulation [3]. Additionally, many viruses, such as SARS-CoV-2 and Ebola, exploit this compartment as a primary entry point into the host cell [4]. Pharmacological strategies often involve lysosomotropic agents that alter the luminal pH or small molecules designed to stabilize resident enzymes [4]. However, because it represents a broad cellular system rather than a single protein or receptor, it is generally considered a cellular location or pathway rather than a discrete therapeutic target [5]. Sources: [1] Huotari, J., & Helenius, A. (2011). Endosome maturation. EMBO J. [2] Saxton, R. A., & Sabatini, D. M. (2017). mTOR Signaling in Growth, Metabolism, and Disease. Cell. [3] Nixon, R. A. (2017). The role of the endolysosomal system in Alzheimer's disease. Nat Rev Neurosci. [4] Kaufmann, A. M., & Krise, J. P. (2007). Lysosomotropic drugs: Mechanisms and implications. J Pharm Sci. [5] Winckler, B., et al. (2018). The endolysosomal system at a glance. J Cell Biol.

Other names

Endolysosomal systemEndocytic pathwayEndosomal-lysosomal systemEndosomal compartment

Modulation of luminal pH, inhibition of endosomal acidification, substrate reduction therapy, or enzyme replacement therapy within the compartment.