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Metabolic reprogramming in the arsenic carcinogenesis.

Yihui Ruan1, Xin Fang1, Tingyue Guo1

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Ecotoxicology and Environmental Safety
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Summary

Chronic arsenic exposure is linked to cancer, potentially through metabolic reprogramming. This review explores how arsenic alters glucose, lipid, and amino acid metabolism, offering insights into arsenic carcinogenesis mechanisms.

Keywords:
Amino acid metabolismArsenicCarcinogenic mechanismGlucose metabolismLipid metabolismOxidative stress

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Area of Science:

  • Environmental Health
  • Cancer Biology
  • Metabolomics

Background:

  • Chronic arsenic exposure is associated with various cancers, but the underlying mechanisms remain unclear.
  • Metabolic reprogramming is increasingly recognized as a key factor in tumorigenesis.
  • Arsenic exposure alters metabolite profiles in biological samples, suggesting a link to cancer development.

Purpose of the Study:

  • To review current findings on metabolic reprogramming in response to arsenic exposure.
  • To explore alterations in glucose, lipid, and amino acid metabolism.
  • To connect metabolic changes with arsenic-induced carcinogenesis.

Main Methods:

  • Literature review of recent studies on arsenic exposure and metabolism.
  • Analysis of findings related to glycolysis, lipolysis, and amino acid pathways.
  • Examination of the role of oxidative stress in linking arsenic toxicity and metabolism.

Main Results:

  • Arsenic exposure generally enhances glycolysis, though a "reverse Warburg effect" is observed in some in vivo models.
  • Arsenic disrupts lipid metabolism by inhibiting lipolysis and affects the serine-glycine one-carbon pathway.
  • Oxidative stress is a significant mechanism linking arsenic toxicity to metabolic reprogramming.

Conclusions:

  • Metabolic reprogramming is a promising avenue for understanding arsenic carcinogenesis.
  • Metabolic alterations may depend on arsenic dose and exposure duration.
  • Further research is needed to establish causal relationships and identify conserved metabolic changes.