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Loss of SLC25A11 causes suppression of NSCLC and melanoma tumor formation

 Jae-Seon Lee  ;  Ho Lee  ;  Soohyun Lee  ;  Joon Hee Kang  ;  Seon-Hyeong Lee  ;  Seul-Gi Kim  ;  Eunae Sandra Cho  ;  Nam Hee Kim  ;  Jong In Yook  ;  Soo-Youl Kim 
 EBioMedicine, Vol.40 : 184-197, 2019 
Journal Title
Issue Date
Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Animals ; Base Sequence ; Carcinoma, Non-Small-Cell Lung/genetics* ; Carcinoma, Non-Small-Cell Lung/metabolism ; Carcinoma, Non-Small-Cell Lung/pathology ; Cell Line, Tumor ; Cell Proliferation ; Cell Transformation, Neoplastic/genetics* ; Cell Transformation, Neoplastic/metabolism ; Disease Models, Animal ; Gene Knockdown Techniques ; Genes, ras ; Heterografts ; Humans ; Lung Neoplasms/genetics* ; Lung Neoplasms/metabolism ; Lung Neoplasms/pathology ; Melanoma/genetics* ; Melanoma/metabolism ; Melanoma/pathology ; Membrane Potential, Mitochondrial/genetics ; Membrane Transport Proteins/deficiency* ; Membrane Transport Proteins/genetics ; Membrane Transport Proteins/metabolism ; Mice ; Mice, Knockout ; Mitochondria/genetics ; Mitochondria/metabolism ; Models, Biological ; Mutation ; Protein Transport
Cancer metabolism ; Cancer therapeutic target ; Malate aspartate shuttle ; Oxoglutarate carrier ; SLC25A11
BACKGROUND: Fast growing cancer cells require greater amounts of ATP than normal cells. Although glycolysis was suggested as a source of anabolic metabolism based on lactate production, the main source of ATP to support cancer cell metabolism remains unidentified. METHODS: We have proposed that the oxoglutarate carrier SLC25A11 is important for ATP production in cancer by NADH transportation from the cytosol to mitochondria as a malate. We have examined not only changes of ATP and NADH but also changes of metabolites after SLC25A11 knock down in cancer cells. FINDINGS: The mitochondrial electron transport chain was functionally active in cancer cells. The cytosolic to mitochondrial NADH ratio was higher in non-small cell lung cancer (NSCLC) and melanoma cells than in normal cells. This was consistent with higher levels of the oxoglutarate carrier SLC25A11. Blocking malate transport by knockdown of SLC25A11 significantly impaired ATP production and inhibited the growth of cancer cells, which was not observed in normal cells. In in vivo experiments, heterozygote of SLC25A11 knock out mice suppressed KRASLA2 lung tumor formation by cross breeding. INTERPRETATION: Cancer cells critically depended on the oxoglutarate carrier SLC25A11 for transporting NADH from cytosol to mitochondria as a malate form for the purpose of ATP production. Therefore blocking SLC25A11 may have an advantage in stopping cancer growth by reducing ATP production. FUND: The Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Science and ICT to SYK (NRF-2017R1A2B2003428).
Appears in Collections:
5. Research Institutes (연구소) > Oral Cancer Research Institute (구강종양연구소) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Oral Pathology (구강병리학교실) > 1. Journal Papers
Yonsei Authors
Kim, Nam Hee(김남희) ORCID logo https://orcid.org/0000-0002-3087-5276
Yook, Jong In(육종인) ORCID logo https://orcid.org/0000-0002-7318-6112
Cho, Eunae(조은애산드라) ORCID logo https://orcid.org/0000-0002-0820-3019
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