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Lysosomes are essential organelles degrading a wide range of substrates, maintaining cellular homeostasis, and regulating cell growth through nutrient and metabolic signaling. A key vulnerability of lysosomes is their membrane permeabilization (LMP), a process tightly linked to diseases including aging, neurodegeneration, lysosomal storage disorders, and cardiovascular disease. Research progress in the past few years has greatly improved our understanding of lysosomal repair mechanisms. Upon LMP, cells activate multiple membrane remodeling processes to restore lysosomal integrity, such as membrane invagination, tubulation, lipid patching, and membrane stabilization. These repair pathways are critical in preserving cellular stress tolerance and preventing deleterious inflammation and cell death triggered by lysosomal damage. This review focuses on the expanding mechanistic insights of lysosomal repair, highlighting its crucial role in maintaining cellular health and the implications for disease pathogenesis and therapeutic strategies.
Xun et al. (Thu,) studied this question.