Ruey‐Hwa Chen, Antonio J. Costa‐Filho, Jayanta Debnath, Thierry Galli, Liang Ge, Deborah C. I. Goberdhan, Wei Guo, Kangmin He, Ralf Jacob, Tiebang Kang, Min Goo Lee, Lian Li, Fabio Lolicato, Jun Lu, Vivek Malhotra, Walter Nickel, Vassiliki Nikoletopoulou, Stacey K. Ogden, Georgia Maria Sagia, Feng Shao, Anbing Shi, Clotilde Théry, Christel Vérollet, Julien Villeneuve, Frederik J. Verweij, Yanzhuang Wang, Juan Wang, Shenjie Wu, Yihong Ye, Hang Yin, Li Yu, Min Zhang, Ying Zhang, Xin Zhou, Chiara Zurzolo
In eukaryotes, protein secretion plays essential roles in intercellular communications and extracellular niche-building. Protein secretion generally requires a signal sequence that targets cargos to the canonical secretory pathway consisting of the endoplasmic reticulum (ER), the Golgi apparatus, plasma membrane, and vesicles moving between these compartments. However, cytoplasmic proteins lacking signal sequences (e.g., IL1β, Acb1, FGF2) have been detected, and many have defined functions in the extracellular space, suggesting unconventional protein secretion (UcPS) via alternative pathways. In recent years, scientists have uncovered many new UcPS paradigms, reporting a plethora of mechanisms that collectively form a new field. The inaugural Cold Spring Harbor Asia (CSHA) conference on "Molecular Mechanisms and Physiology of Unconventional Secretion" is the first meeting to bring these researchers together, providing a collegial platform for information sharing at this exciting frontier of cell biology research.