An engineered pancreatic cancer model with intra-tumoral heterogeneity of driver mutations

Moon H., Ozcelikkale A., Yang Y., Elzey B. D., Konieczny S. F., Han B.

LAB ON A CHIP, cilt.20, sa.20, ss.3720-3732, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 20
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1039/d0lc00707b
  • Dergi Adı: LAB ON A CHIP
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Biotechnology Research Abstracts, Chemical Abstracts Core, Communication Abstracts, EMBASE, INSPEC, MEDLINE
  • Sayfa Sayıları: ss.3720-3732
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Pancreatic ductal adenocarcinoma (PDAC) is a complex disease with significant intra-tumoral heterogeneity (ITH). Currently, no reliable PDAC tumor model is available that can present ITH profiles in a controlled manner. We develop an in vitro microfluidic tumor model mimicking the heterogeneous accumulation of key driver mutations of human PDAC using cancer cells derived from genetically engineered mouse models. These murine pancreatic cancer cell lines have KPC (Kras and Trp53 mutations) and KIC genotypes (Kras mutation and Cdkn2a deletion). Also, the KIC genotypes have two distinct phenotypes - mesenchymal or epithelial. The tumor model mimics the ITH of human PDAC to study the effects of ITH on the gemcitabine response. The results show gemcitabine resistance induced by ITH. Remarkably, it shows that cancer cell-cell interactions induce the gemcitabine resistance potentially through epithelial-mesenchymal-transition. The tumor model can provide a useful testbed to study interaction mechanisms between heterogeneous cancer cell subpopulations.