Though existing evidence supports that dysfunction in the clearing of cellular debris plays an important role in the development of Parkinson's disease, many unanswered questions remain regarding the mechanisms of the autophagy-lysosomal pathway involved in this process. In particular, research in the field has been limited by a lack of reliable, quantitative tests for monitoring autophagy-lysosome activity. In this interview, Dr. Zhenyu Yue describes his research investigating the cellular and molecular mechanisms for Parkinson's disease and other neurodegenerative diseases, focusing on their work examining the regulation of the autophagy-lysosomal pathway, potential therapeutic targets, and MJFF-funded research that aims to develop sensitive, robust autophagy-lysosome assays to facilitate the discovery of biomarkers for PD using stem cell-derived neurons and biofluids. Zhenyu is the Aidekman Research Professor in the Department of Neurology and Friedman Brain Institute at the Icahn School of Medicine at Mount Sinai. He is also the Director of the Center of Parkinson’s Disease Neurobiology and Director of Basic Research of Movement Disorders at Mount Sinai. This podcast is geared toward researchers and clinicians. If you live with Parkinson’s or have a friend or family member with PD, listen to The Michael J. Fox Foundation Parkinson’s Podcast. Hear from scientists, doctors and people with Parkinson's on different aspects of life with the disease as well as research toward treatment breakthroughs at https://www.michaeljfox.org/podcasts.