Lysosomal Stress Response (LSR): Physiological Importance and Pathological Relevance

Area of Science:

• Cell Biology
• Organelle Physiology

Background:

• Endoplasmic reticulum (ER) and mitochondrial stress responses are well-characterized.
• Lysosomes, dynamic organelles vital for cellular physiology and disease pathogenesis, have largely unstudied stress responses.

Purpose of the Study:

• To focus attention on lysosomal stress responses (LSR).
• To compare LSR with known ER and mitochondrial stress responses.
• To establish a framework for future LSR characterization.

Main Methods:

• Literature synthesis and data analysis.
• Conceptual framework development for LSR.

Main Results:

• Lysosomes are integral to cellular homeostasis and disease.
• Lysosomal stress responses (LSR) are proposed as a distinct cellular stress pathway.
• A framework for understanding and defining LSR is presented.

Conclusions:

• Lysosomal stress responses (LSR) warrant further investigation.
• Understanding LSR is critical for lysosomal storage diseases, neurodegenerative disorders, and cancer.
• The proposed framework allows for evolving definitions of LSR as knowledge grows.