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Neighbors who talk: Mitochondria-lysosome crosstalk in homeostasis
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DOI：10.1016/j.ceb.2026.102627.png)
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Abstract
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Mitochondria are highly dynamic and multifaceted organelles that perform essential cellular functions such as producing energy, regulating metabolism, and orchestrating immune responses. Lysosomes are crucial signaling hubs that are important for nutrient sensing, signal transduction, and regulation of cellular degradation and recycling processes including the removal of damaged mitochondrial components or entire mitochondria. Together, these two organelles perform critical cellular functions. Emerging evidence links defects in both organelles to multiple diseases, underscoring how their functions are intricately linked. To coordinate their activities, mitochondria and lysosomes engage in bidirectional crosstalk, enabling reciprocal regulation of their respective functions. These ‘organelle conversations’ can occur through direct interactions at membrane contact sites where both organelles physically interact via stabilization by molecular tethers, or at a distance through signaling pathways. Here we discuss recent progress in our understanding of the mechanisms underlying mitochondria-lysosome crosstalk and how this communication is altered in pathological conditions.
Keywords:
Mitochondria
Lysosomes
Organelle crosstalk
Cellular homeostasis
Signaling pathways
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