Cellular and Molecular Gastroenterology and Hepatology (Jan 2019)

Three-Dimensional Organoids Reveal Therapy Resistance of Esophageal and Oropharyngeal Squamous Cell Carcinoma CellsSummary

  • Takashi Kijima,
  • Hiroshi Nakagawa,
  • Masataka Shimonosono,
  • Prasanna M. Chandramouleeswaran,
  • Takeo Hara,
  • Varun Sahu,
  • Yuta Kasagi,
  • Osamu Kikuchi,
  • Koji Tanaka,
  • Veronique Giroux,
  • Amanda B. Muir,
  • Kelly A. Whelan,
  • Shinya Ohashi,
  • Seiji Naganuma,
  • Andres J. Klein-Szanto,
  • Yoshiaki Shinden,
  • Ken Sasaki,
  • Itaru Omoto,
  • Yoshiaki Kita,
  • Manabu Muto,
  • Adam J. Bass,
  • J. Alan Diehl,
  • Gregory G. Ginsberg,
  • Yuichiro Doki,
  • Masaki Mori,
  • Yasuto Uchikado,
  • Takaaki Arigami,
  • Narayan G. Avadhani,
  • Devraj Basu,
  • Anil K. Rustgi,
  • Shoji Natsugoe

Journal volume & issue
Vol. 7, no. 1
pp. 73 – 91

Abstract

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Background & Aims: Oropharyngeal and esophageal squamous cell carcinomas, especially the latter, are a lethal disease, featuring intratumoral cancer cell heterogeneity and therapy resistance. To facilitate cancer therapy in personalized medicine, three-dimensional (3D) organoids may be useful for functional characterization of cancer cells ex vivo. We investigated the feasibility and the utility of patient-derived 3D organoids of esophageal and oropharyngeal squamous cell carcinomas. Methods: We generated 3D organoids from paired biopsies representing tumors and adjacent normal mucosa from therapy-naïve patients and cell lines. We evaluated growth and structures of 3D organoids treated with 5-fluorouracil ex vivo. Results: Tumor-derived 3D organoids were grown successfully from 15 out of 21 patients (71.4%) and passaged with recapitulation of the histopathology of the original tumors. Successful formation of tumor-derived 3D organoids was associated significantly with poor response to presurgical neoadjuvant chemotherapy or chemoradiation therapy in informative patients (P = 0.0357, progressive and stable diseases, n = 10 vs. partial response, n = 6). The 3D organoid formation capability and 5-fluorouracil resistance were accounted for by cancer cells with high CD44 expression and autophagy, respectively. Such cancer cells were found to be enriched in patient-derived 3D organoids surviving 5-fluorouracil treatment. Conclusions: The single cell-based 3D organoid system may serve as a highly efficient platform to explore cancer therapeutics and therapy resistance mechanisms in conjunction with morphological and functional assays with implications for translation in personalized medicine. Keywords: 3D Organoids, Autophagy, CD44, 5-Fluorouracil