4.7 Review

On the Origin of Pancreatic Cancer: Molecular Tumor Subtypes in Perspective of Exocrine Cell Plasticity

期刊

出版社

ELSEVIER INC
DOI: 10.1016/j.jcmgh.2021.11.010

关键词

Pancreas; Heterogeneity; Metaplasia

资金

  1. Prijs Kankeronderzoek-Oncologisch Centrum VUB
  2. Research Foundation Flanders [G001619N, G0F8916N]

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This review focuses on the pathobiology of pancreatic ductal adenocarcinoma (PDAC) and highlights studies using human cells. The review reveals the remarkable exocrine cell plasticity in adult pancreatic tissue and explores the relationships between these cell states and PDAC molecular subtypes. These findings provide valuable insights into the origins and biology of PDAC.
Pancreatic ductal adenocarcinoma (PDAC) is a devastating type of cancer. While many studies have shed light into the pathobiology of PDAC, the nature of PDAC's cell of origin remains under debate. Studies in adult pancreatic tissue have unveiled a remarkable exocrine cell plasticity including transitional states, mostly exemplified by acinar to ductal cell metaplasia, but also with recent evidence hinting at duct to basal cell transitions. Single-cell RNA sequencing has further revealed intrapopulation heterogeneity among acinar and duct cells. Transcriptomic and epigenomic relationships between these exocrine cell differentiation states and PDAC molecular subtypes have started to emerge, suggesting different ontogenies for different tumor subtypes. This review sheds light on these diverse aspects with particular focus on studies with human cells. Understanding the masked ball of exocrine cells at origin of PDAC and leaving behind the binary acinar vs duct cell classification may significantly advance our insights in PDAC biology. (Cell doi.org/10.1016/j.jcmgh.2021.11.010)

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