Abstract
Background
Adiponectin is an adipose tissue-derived secretory hormone whose plasma concentrations are lower in obese individuals. Obesity is a risk factor for the development and growth of pancreatic cancer, and hypoadiponectinemia was suggested to be involved in the growth of Pan02 murine pancreatic cancer cells that were inoculated into the flanks of congenitally obese mice.
Aim
The aim of this study was to clarify the role of adiponectin in the growth of pancreatic cancer cells.
Methods
We examined the effect of adiponectin on the growth of Pan02 cells using recombinant adiponectin and adiponectin knockout mice.
Results
The in vitro treatment of Pan02 cells with adiponectin inhibited cellular proliferation that was accompanied by increased apoptosis and caspase-3 and caspase-7 activities. Transplantation of Pan02 cells into the pancreas of knockout mice resulted in a larger tumor volume with fewer terminal deoxyribonucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) positive cells compared with wild-type mice.
Conclusions
The results indicate that adiponectin directly suppresses the proliferation of Pan02 cells.
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Acknowledgments
The authors thank Wei Li (Osaka University) for her excellent technical assistance. This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.
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Motohiko Kato and Kenji Watabe contributed equally to this work.
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Kato, M., Watabe, K., Tsujii, M. et al. Adiponectin Inhibits Murine Pancreatic Cancer Growth. Dig Dis Sci 59, 1192–1196 (2014). https://doi.org/10.1007/s10620-014-3175-6
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DOI: https://doi.org/10.1007/s10620-014-3175-6