Molecular Therapy: Nucleic Acids (Jun 2022)

Establishment of a pancreatic cancer animal model using the pancreas-targeted hydrodynamic gene delivery method

  • Osamu Shibata,
  • Kenya Kamimura,
  • Yuto Tanaka,
  • Kohei Ogawa,
  • Takashi Owaki,
  • Chiyumi Oda,
  • Shinichi Morita,
  • Atsushi Kimura,
  • Hiroyuki Abe,
  • Satoshi Ikarashi,
  • Kazunao Hayashi,
  • Takeshi Yokoo,
  • Shuji Terai

Journal volume & issue
Vol. 28
pp. 342 – 352

Abstract

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This research developed an easy-to-use, reproducible pancreatic cancer animal model utilizing pancreas-targeted hydrodynamic gene delivery to deliver human pancreatic cancer-related genes to the pancreas of wild-type rats. KRASG12D-induced pancreatic intraepithelial neoplasia lesions showed malignant transformation in the main pancreatic duct at 4 weeks and developed acinar-to-ductal metaplasia, which led to pancreatic ductal adenocarcinoma within 5 weeks, and the gene combination of KRASG12D and YAP enhanced these effects. The repeat hydrodynamic gene delivery of KRASG12D + YAP combination at 4 weeks showed acinar-to-ductal metaplasia in all rats and pancreatic ductal adenocarcinoma in 80% of rats 1 week later. Metastatic tumors in the liver, lymph nodes, and subcutaneous lesions and nervous invasion were confirmed. KRASG12D and YAP combined transfer contributes to the E- to N-cadherin switch in pancreatic ductal adenocarcinoma cells and to tumor metastases. This pancreatic cancer model will speed up pancreatic cancer research for novel treatments and biomarkers for early diagnosis.

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