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Deficiency in SLC25A15, a hypoxia-responsive gene, promotes hepatocellular carcinoma by reprogramming glutamine metabolism

  • 0Division of Hepatobiliary and Pancreas Surgery, Department of General Surgery, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), 518020 Shenzhen, China; Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, 510632 Guangzhou, China.
Journal of Hepatology +

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March 7, 2024

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March 7, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Solute carrier family 25 member 15 (SLC25A15) acts as a tumor suppressor in liver cancer. Its deficiency promotes cancer growth by altering glutamine metabolism, offering a therapeutic target for hepatocellular carcinoma (HCC).

Area Of Science

  • Hepatocellular Carcinoma Research
  • Cancer Metabolism
  • Molecular Oncology

Background

  • The role of solute carrier family 25 member 15 (SLC25A15) in hepatocellular carcinoma (HCC) is not well understood.
  • SLC25A15 is a key component of the urea cycle, essential for cellular metabolism.

Purpose Of The Study

  • To investigate the impact of SLC25A15 on HCC progression.
  • To elucidate the mechanisms by which SLC25A15 influences HCC development.
  • To explore SLC25A15's role in glutamine metabolism reprogramming in HCC.

Main Methods

  • Large-scale data mining of HCC patient data.
  • In vitro studies using HCC cell lines.
  • In vivo studies using animal models.
  • Organoid model development for HCC.
  • Analysis of glutamine metabolism pathways.

Main Results

  • SLC25A15 expression is decreased in HCC tissues, correlating with poorer patient prognosis.
  • Hypoxia reduces SLC25A15 expression in HCC, linked to HNF4A regulation.
  • SLC25A15 deficiency upregulates SLC1A5, increasing glutamine uptake and promoting HCC progression via lipid synthesis.
  • Low SLC25A15 leads to ammonia accumulation, suppressing OGDHL and reprogramming glutamine metabolism.
  • Targeting glutamine metabolism enhances HCC cell sensitivity to anti-PD-L1 therapy.

Conclusions

  • SLC25A15 acts as a hypoxia-responsive tumor suppressor in HCC.
  • SLC25A15 deficiency drives HCC progression by reprogramming glutamine metabolism through SLC1A5 and OGDHL.
  • Targeting glutamine metabolism is a potential therapeutic strategy for SLC25A15-deficient HCC.
  • SLC25A15 can serve as a biomarker for precision therapy and enhance anti-PD-L1 efficacy.

Keywords:

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