Download MendeleyShort-distance vesicle transport via phase separation.
Qiu, H., Wu, X., Ma, X., Li, S., Cai, Q., Ganzella, M., Ge, L., Zhang, H., Zhang, M.(2024) Cell 187: 2175-2193.e21
- PubMed: 38552623
- DOI: https://doi.org/10.1016/j.cell.2024.03.003
- Primary Citation of Related Structures:
8I3E - PubMed Abstract:
In addition to long-distance molecular motor-mediated transport, cellular vesicles also need to be moved at short distances with defined directions to meet functional needs in subcellular compartments but with unknown mechanisms. Such short-distance vesicle transport does not involve molecular motors. Here, we demonstrate, using synaptic vesicle (SV) transport as a paradigm, that phase separation of synaptic proteins with vesicles can facilitate regulated, directional vesicle transport between different presynaptic bouton sub-compartments. Specifically, a large coiled-coil scaffold protein Piccolo, in response to Ca 2+ and via its C2A domain-mediated Ca 2+ sensing, can extract SVs from the synapsin-clustered reserve pool condensate and deposit the extracted SVs onto the surface of the active zone protein condensate. We further show that the Trk-fused gene, TFG, also participates in COPII vesicle trafficking from ER to the ER-Golgi intermediate compartment via phase separation. Thus, phase separation may play a general role in short-distance, directional vesicle transport in cells.
Organizational Affiliation:
Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
