Visualization of stem cell activity in pancreatic cancer expansion by direct lineage tracing with live imaging.

Abstract:

:Pancreatic ductal adenocarcinoma (PDAC) is a devastating disease. Although rigorous efforts identified the presence of 'cancer stem cells (CSCs)' in PDAC and molecular markers for them, stem cell dynamics in vivo have not been clearly demonstrated. Here we focused on Doublecortin-like kinase 1 (Dclk1), known as a CSC marker of PDAC. Using genetic lineage tracing with a dual-recombinase system and live imaging, we showed that Dclk1+ tumor cells continuously provided progeny cells within pancreatic intraepithelial neoplasia, primary and metastatic PDAC, and PDAC-derived spheroids in vivo and in vitro. Furthermore, genes associated with CSC and epithelial mesenchymal transition were enriched in mouse Dclk1+ and human DCLK1-high PDAC cells. Thus, we provided direct functional evidence for the stem cell activity of Dclk1+ cells in vivo, revealing the essential roles of Dclk1+ cells in expansion of pancreatic neoplasia in all progressive stages.

journal_name

Elife

journal_title

eLife

authors

Maruno T,Fukuda A,Goto N,Tsuda M,Ikuta K,Hiramatsu Y,Ogawa S,Nakanishi Y,Yamaga Y,Yoshioka T,Takaori K,Uemoto S,Saur D,Chiba T,Seno H

doi

10.7554/eLife.55117

subject

Has Abstract

pub_date

2021-01-04 00:00:00

issn

2050-084X

pii

55117

journal_volume

10

pub_type

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