Hes1 Controls Exocrine Cell Plasticity and Restricts Development of Pancreatic Ductal Adenocarcinoma in a Mouse Model

Ana Hidalgo-Sastre, Roxanne L. Brodylo, Clara Lubeseder-Martellato, Bence Sipos, Katja Steiger, Marcel Lee, Guido von Figura, Barbara Grünwald, Suyang Zhong, Marija Trajkovic-Arsic, Florian Neff, Roland M. Schmid, Jens T. Siveke

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Perturbation of pancreatic acinar cell state can lead to acinar-to-ductal metaplasia (ADM), a precursor lesion to the development of pancreatic ductal adenocarcinoma (PDAC). In the pancreas, Notch signaling is active both during development and in adult cellular differentiation processes. Hes1, a key downstream target of the Notch signaling pathway, is expressed in the centroacinar compartment of the adult pancreas as well as in both preneoplastic and malignant lesions. In this study, we used a murine genetic in vivo approach to ablate Hes1 in pancreatic progenitor cells (Ptf1a+/Cre; Hes1fl/fl). Using this model, we studied the role of Hes1 in both acinar cell plasticity and pancreatic regeneration after caerulein-induced pancreatitis and in KrasG12D-driven PDAC development. We show that, although pancreatic development is not perturbed on the deletion of Hes1, terminal acinar differentiation in the adult pancreas is compromised. Moreover, the loss of Hes1 leads to the impaired regeneration of the exocrine compartment, accelerated fatty metaplasia, and persistent ADM after acute caerulein-induced pancreatitis. In KrasG12D-driven carcinogenesis, Hes1 ablation resulted in increased ADM, decreased formation of high-grade pancreatic intraepithelial neoplasias, and accelerated development of PDAC with shortened survival time. In conclusion, Hes1 plays a key role in acinar cell integrity and plasticity on cellular insults. Furthermore, Hes1 is an essential component of the pancreatic intraepithelial neoplasias–to–PDAC route in KrasG12D-driven mouse pancreatic carcinogenesis.

Original languageEnglish
Pages (from-to)2934-2944
Number of pages11
JournalAmerican Journal of Pathology
Volume186
Issue number11
DOIs
StatePublished - 1 Nov 2016
Externally publishedYes

Fingerprint

Dive into the research topics of 'Hes1 Controls Exocrine Cell Plasticity and Restricts Development of Pancreatic Ductal Adenocarcinoma in a Mouse Model'. Together they form a unique fingerprint.

Cite this