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Arsenic exposure increases cancer risk through unclear mechanisms. This review explores how arsenic causes epigenetic dysregulation, leading to oncogenic gene expression and disease pathogenesis.

Keywords:
Alternative splicingCarcinogenDNA methylationEpigeneticsHeavy metalInorganic arsenicTranscription

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Area of Science:

  • Environmental Health
  • Toxicology
  • Cancer Biology

Background:

  • Arsenic is a toxic metalloid linked to various cancers and non-cancer illnesses.
  • The non-mutagenic mechanisms of arsenic toxicity, including gene expression changes, are not fully understood.
  • Epigenetic dysregulation is an emerging area of research in arsenic-induced pathogenesis.

Purpose of the Study:

  • To review recent discoveries on arsenic-induced epigenetic changes in cancer development.
  • To highlight proposed mechanisms by which arsenic drives oncogenic gene expression.
  • To elucidate the role of epigenetic alterations in arsenic toxicity.

Main Methods:

  • Literature review of recent scientific publications.
  • Analysis of studies investigating arsenic's effects on epigenetic modifications.
  • Synthesis of proposed molecular mechanisms of arsenic-induced gene expression changes.

Main Results:

  • Arsenic exposure can lead to significant epigenetic alterations.
  • These epigenetic changes include DNA methylation and histone modifications.
  • Arsenic targets specific pathways to promote oncogenic gene expression.

Conclusions:

  • Epigenetic dysregulation is a key mechanism in arsenic-induced cancer development.
  • Understanding these epigenetic targets is crucial for developing preventative and therapeutic strategies.
  • Further research is needed to fully elucidate arsenic's epigenetic impact on health.