A lysosome switch could reshape research on cancer and neurodegenerative disease
Why it matters: This lysosome 'off switch' discovery could revolutionize treatments for cancer and neurodegenerative diseases.
- Bielefeld University and FMP jointly elucidated a key mechanism regulating lysosomes, the cell's 'recycling centers,' which are vital for metabolism and disease.
- Prof. Dr. Markus Damme (Bielefeld University) and Prof. Volker Haucke (FMP) led the team that identified the protein ARL8B as a 'motor starter' for lysosome movement and growth processes.
- The research team discovered TBC1D9B as the crucial 'off switch' that inactivates ARL8B, preventing lysosomes from spreading uncontrollably and enabling proper cellular self-cleaning (autophagy) during nutrient deprivation.
- Valentin Duhay (CAU Kiel), a co-first author, explains that without TBC1D9B or its partner TMEM55B, lysosomes lose their organized positioning, disrupting essential cellular adaptations.
An international research team from Bielefeld University and the Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) has uncovered a crucial regulatory mechanism within human cells, identifying the 'off switch' for lysosomes' central transport protein, ARL8B. This discovery, detailed in Nature Communications, reveals how cells spatially organize their recycling centers and adapt to nutrient deprivation, offering significant insights into the development of cancer and neurodegenerative diseases.
