Altered Sphingolipids Metabolism Damaged Mitochondrial Functions: Lessons Learned From Gaucher and Fabry Diseases

Area of Science:

• Biochemistry
• Cell Biology
• Genetics

Background:

• Sphingolipids are bioactive lipids crucial for cell signaling and membrane properties.
• Lysosomes are central to sphingolipid metabolism, with deficiencies causing lysosomal storage disorders (LSDs).
• Lysosomal dysfunction impacts lipid recycling, cellular membranes, and mitochondrial function.

Purpose of the Study:

• To review mitochondrial function in cells with altered sphingolipid metabolism.
• To focus on Gaucher and Fabry diseases as models of sphingolipid disorders.
• To highlight the interplay between mitochondrial energy metabolism and the mitochondria-autophagy-lysosome axis.

Main Methods:

• Literature review of sphingolipid metabolism and lysosomal function.
• Analysis of mitochondrial energy metabolism in LSDs.
• Examination of mitochondria-autophagy-lysosome crosstalk.

Main Results:

• Altered sphingolipid metabolism impairs lysosomal function, affecting lipid homeostasis.
• Lysosomal abnormalities disrupt autophagy and cellular energy balance.
• Mitochondrial dysfunction is a key feature in Gaucher and Fabry diseases.

Conclusions:

• Lysosomal storage disorders significantly impact mitochondrial function.
• Understanding sphingolipid metabolism is key to addressing mitochondrial dysfunction in LSDs.
• Targeting the mitochondria-autophagy-lysosome pathway may offer therapeutic strategies.