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Hasegawa K, Fujimori H, Nakatani K, Takahashi M, Izumi Y, Bamba T, Nakamura-Shima M, Shibuya-Takahashi R, Mochizuki M, Wakui Y, Abue M, Iwai W, Fukushi D, Satoh K, Yamaguchi K, Shindo N, Yasuda J, Asano N, Imai T, Asada Y, Katori Y, Tamai K. Delta-6 desaturase FADS2 is a tumor-promoting factor in cholangiocarcinoma. Cancer Sci 2024; 115:3346-3357. [PMID: 39113435 PMCID: PMC11447924 DOI: 10.1111/cas.16306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 07/17/2024] [Accepted: 07/25/2024] [Indexed: 08/09/2024] Open
Abstract
Cholangiocarcinoma is a fatal disease with limited therapeutic options. We screened genes required for cholangiocarcinoma tumorigenicity and identified FADS2, a delta-6 desaturase. FADS2 depletion reduced in vivo tumorigenicity and cell proliferation. In clinical samples, FADS2 was expressed in cancer cells but not in stromal cells. FADS2 inhibition also reduced the migration and sphere-forming ability of cells and increased apoptotic cell death and ferroptosis markers. Lipidome assay revealed that triglyceride and cholesterol ester levels were decreased in FADS2-knockdown cells. The oxygen consumption ratio was also decreased in FADS2-depleted cells. These data indicate that FADS2 depletion causes a reduction in lipid levels, resulting in decrease of energy production and attenuation of cancer cell malignancy.
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Affiliation(s)
- Kohsei Hasegawa
- Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
- Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Haruna Fujimori
- Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
| | - Kohta Nakatani
- Division of Metabolomics, Medical Research Center for High Depth Omics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Masatomo Takahashi
- Division of Metabolomics, Medical Research Center for High Depth Omics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Izumi
- Division of Metabolomics, Medical Research Center for High Depth Omics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Takeshi Bamba
- Division of Metabolomics, Medical Research Center for High Depth Omics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Mao Nakamura-Shima
- Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
| | - Rie Shibuya-Takahashi
- Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
| | - Mai Mochizuki
- Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
| | - Yuta Wakui
- Division of Gastroenterology, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Makoto Abue
- Division of Gastroenterology, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Wataru Iwai
- Division of Gastroenterology, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Daisuke Fukushi
- Division of Gastroenterology, Tohoku Medical and Pharmaceutical University, Sendai, Miyagi, Japan
| | - Kennichi Satoh
- Division of Gastroenterology, Tohoku Medical and Pharmaceutical University, Sendai, Miyagi, Japan
| | - Kazunori Yamaguchi
- Division of Molecular and Cellular Oncology, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
| | - Norihisa Shindo
- Division of Cancer Chromosome Biology Unit, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
| | - Jun Yasuda
- Division of Molecular and Cellular Oncology, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
| | - Naoki Asano
- Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takayuki Imai
- Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Yukinori Asada
- Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan
| | - Yukio Katori
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Keiichi Tamai
- Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Miyagi, Japan
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