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Characterization of Neuronal Lysosome Interactome with Proximity Labeling Proteomics
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Bridging molecular and cellular neuroscience with proximity labeling technologies
Jun-Gyu Lee1, Inyoung Jeong2,3, Kwang-Eun Kim4,5,6,7
1Organelle Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea.
Experimental & Molecular Medicine
|July 10, 2025
Summary
Proximity labeling (PL) techniques map protein interactions in the brain, advancing neuroscience. These tools reveal molecular insights into neural circuits, aiding in understanding brain disorders and identifying therapeutic targets.
Area of Science:
- Neuroscience
- Molecular Biology
- Cell Biology
Background:
- Proximity labeling (PL) techniques are crucial for understanding molecular interactions in neural circuits.
- Foundational tools like BioID and APEX, along with innovations like TurboID and light-activated systems, enable precise mapping of protein-protein interactions in living cells.
Purpose of the Study:
- To review the advancements and applications of proximity labeling techniques in neuroscience.
- To highlight the role of PL in deciphering molecular mechanisms underlying neural connectivity in health and disease.
Main Methods:
- Review of existing literature on proximity labeling techniques and their applications.
- Integration of PL with multi-omics and advanced imaging strategies.
Main Results:
- PL has identified dynamic protein networks involved in synaptic remodeling, calcium signaling, and neurological disorders.
- PL aids in comprehending brain's molecular architecture and uncovering therapeutic targets.
- Integration with multi-omics and imaging enhances the decoding of neural network interplay.
Conclusions:
- Proximity labeling technologies are pivotal for unraveling the complexity of brain networks.
- Continued evolution of PL promises deeper insights into the molecular basis of neural connectivity.
- PL bridges molecular and cellular neuroscience, offering a powerful framework for research.

