Stromal-derived interleukin 6 drives epithelial-to-mesenchymal transition and therapy resistance in esophageal adenocarcinoma

The tissue dynamics that govern maintenance and regeneration of the pancreas remain largely unknown. In particular, the presence and nature of a cellular hierarchy remains a topic of debate. Previous lineage tracing strategies in the pancreas relied on specific marker genes for clonal labeling, which left other populations untested and failed to account for potential widespread phenotypical plasticity. Here we employed a tracing system that depends on replication-induced clonal marks. We found that, in homeostasis, steady acinar replacement events characterize tissue dynamics, to which all acinar cells have an equal ability to contribute. Similarly, regeneration following pancreatitis was best characterized by an acinar self-replication model because no evidence of a cellular hierarchy was detected. In particular, rapid regeneration in the pancreas was found to be driven by an accelerated rate of acinar fission-like events. These results provide a comprehensive and quantitative model of cell dynamics in the exocrine pancreas.


Eva A. Ebbing, Amber P. van der Zalm, Anne Steins, Aafke Creemers, Simone Hermsen, Rosa Rentenaar, Michelle Klein, Cynthia Waasdorp, Gerrit K. J. Hooijer, Sybren L. Meijer, Kausilia K. Krishnadath, Cornelis J.A. Punt, Mark I. van Berge Henegouwen, Suzanne S. Gisbertz, Otto M. van Delden, Maarten C. C. M. Hulshof, Jan Paul Medema, Hanneke W. M. van Laarhoven and Maarten F. Bijlsma.