Abstract
Objective Cellular senescence limits tumourigenesis by blocking the proliferation of premalignant cells. Additionally, however, senescent cells can exert paracrine effects influencing tumour growth. Senescent cells are present in premalignant pancreatic intraepithelial neoplasia (PanIN) lesions, yet their effects on the disease are poorly characterised. It is currently unknown whether senolytic drugs, aimed at eliminating senescent cells from lesions, could be beneficial in blocking tumour development. Design To uncover the functions of senescent cells and their potential contribution to early pancreatic tumourigenesis, we isolated and characterised senescent cells from PanINs formed in a Kras-driven mouse model, and tested the consequences of their targeted elimination through senolytic treatment. Results We found that senescent PanIN cells exert a tumour-promoting effect through expression of a proinflammatory signature that includes high Cox2 levels. Senolytic treatment with the Bcl2-family inhibitor ABT-737 eliminated Cox2-expressing senescent cells, and an intermittent short-duration treatment course dramatically reduced PanIN development and progression to pancreatic ductal adenocarcinoma. Conclusions These findings reveal that senescent PanIN cells support tumour growth and progression, and provide a first indication that elimination of senescent cells may be effective as preventive therapy for the progression of precancerous lesions.
Original language | American English |
---|---|
Pages (from-to) | 345-355 |
Number of pages | 11 |
Journal | Gut |
Volume | 71 |
Issue number | 2 |
DOIs | |
State | Published - 1 Feb 2022 |
Bibliographical note
Funding Information:This study was supported by donations from Barbara R. Newman in memory of Daniel Newman (GZ), Brenda B. Johnston in memory of Theodore A. Johnston (GZ), and grants from the Israel Science Foundation (1009/13, IB-P), the Israel Science Foundation Morasha programme (1245/16, IB-P.), the Israel Science Foundation-Broad Institute programme (2621/18, IB-P.), the Chief Scientist of the Israel Ministry of Health (3-15017, IB-P), the Alex U. Soyka Programme (IB-P and YD) the Israel Cancer Research Fund (ICRF) Project Grant (GZ), the Israel Science Foundation-Canada programme (2633/17, VK), Sagol Institute for Longevity Research, QuinQuin Foundation, Rising Tide Foundation and Thompson Family Foundation (VK) and the European Research Council under the European Union's FP7 and H2020 (309688 and 856487, VK).
Funding Information:
Funding This study was supported by donations from Barbara R. Newman in memory of Daniel Newman (GZ), Brenda B. Johnston in memory of Theodore A. Johnston (GZ), and grants from the Israel Science Foundation (1009/13, IB-P), the Israel Science Foundation Morasha programme (1245/16, IB-P.), the Israel Science Foundation-Broad Institute programme (2621/18, IB-P.), the Chief Scientist of the Israel Ministry of Health (3–15017, IB-P), the Alex U. Soyka Programme (IB-P and YD) the Israel Cancer Research Fund (ICRF) Project Grant (GZ), the Israel Science Foundation-Canada programme (2633/17, VK), Sagol Institute for Longevity Research, QuinQuin Foundation, Rising Tide Foundation and Thompson Family Foundation (VK) and the European Research Council under the European Union’s FP7 and H2020 (309688 and 856487, VK).
Publisher Copyright:
© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.
Keywords
- Adenocarcinoma/metabolism
- Animals
- Cellular Senescence/drug effects
- Cyclooxygenase 2/metabolism
- Disease Models, Animal
- Mice
- Pancreatic Neoplasms/metabolism
- Precancerous Conditions/metabolism
- Senotherapeutics/therapeutic use