Mitochondrial citrate transport represents a metabolic liability in MYCN-amplified neuroblastoma

Chan Chen1, Qing Bao2, Hao Huang1

  • 1Department of Urology, Medical Research Institute, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan 430071, China.

Insights

MYCN amplification in neuroblastoma drives cancer cell survival by regulating mitochondrial citrate export. Inhibiting Solute Carrier Family 25 Member 1 (SLC25A1) triggers apoptosis and enhances therapy, offering new treatment strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Metabolic Pathways

Background:

  • MYCN amplification is a key driver of aggressive neuroblastoma, conferring poor prognosis and therapeutic resistance.
  • Targeting MYCN directly has proven challenging, necessitating alternative therapeutic strategies.
  • MYCN's influence on cellular metabolism presents potential vulnerabilities for drug development.

Purpose of the Study:

  • To identify metabolic vulnerabilities in MYCN-amplified neuroblastomas.
  • To investigate the role of mitochondrial citrate export in MYCN-driven neuroblastoma.
  • To evaluate SLC25A1 as a therapeutic target for neuroblastoma.

Main Methods:

  • Investigated Solute Carrier Family 25 Member 1 (SLC25A1) mediated mitochondrial citrate export.
  • Analyzed the generation of Acetyl-CoA for histone and non-histone protein acetylation.
  • Assessed the impact of SLC25A1 inhibition on apoptosis and therapeutic efficacy in neuroblastoma cells.

Main Results:

  • SLC25A1-mediated citrate export is essential for MYCN-amplified neuroblastoma cell survival.
  • Citrate export supports Acetyl-CoA production, driving anti-apoptotic gene BIRC3 and MCL1 acetylation.
  • Inhibition of SLC25A1 induced significant apoptosis in MYCN-amplified neuroblastoma cells.
  • SLC25A1 inhibition synergized with BCL2 antagonists, enhancing therapeutic effects.

Conclusions:

  • SLC25A1 is a critical metabolic liability in MYCN-amplified neuroblastomas.
  • Targeting SLC25A1 represents a promising therapeutic strategy for neuroblastoma.
  • Combination therapy with SLC25A1 inhibitors and BCL2 antagonists shows potential for treating MYCN-amplified neuroblastomas.

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