Oxoglutarate carrier inhibition reduced melanoma growth and invasion by reducing ATP production

Jae Seon Lee, Jiwon Choi, Seon Hyeong Lee, Joon Hee Kang, Ji Sun Ha, Hee Yeon Kim, Hyonchol Jang, Jong In Yook, Soo Youl Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Recent findings indicate that (a) mitochondria in proliferating cancer cells are functional, (b) cancer cells use more oxygen than normal cells for oxidative phosphorylation, and (c) cancer cells critically rely on cytosolic NADH transported into mitochondria via the malate-aspartate shuttle (MAS) for ATP production. In a spontaneous lung cancer model, tumor growth was reduced by 50% in heterozygous oxoglutarate carrier (OGC) knock-out mice compared with wild-type counterparts. To determine the mechanism through which OGC promotes tumor growth, the effects of the OGC inhibitor N-phenylmaleimide (NPM) on mitochondrial activity, oxygen consumption, and ATP production were evaluated in melanoma cell lines. NPM suppressed oxygen consumption and decreased ATP production in melanoma cells in a dose-dependent manner. NPM also reduced the proliferation of melanoma cells. To test the effects of NPM on tumor growth and metastasis in vivo, NPM was administered in a human melanoma xenograft model. NPM reduced tumor growth by approximately 50% and reduced melanoma invasion by 70% at a dose of 20 mg/kg. Therefore, blocking OGC activity may be a useful approach for cancer therapy.

Original languageEnglish
Article number1128
Pages (from-to)1-13
Number of pages13
Issue number11
Publication statusPublished - 2020 Nov

Bibliographical note

Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.

All Science Journal Classification (ASJC) codes

  • Pharmaceutical Science


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