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Epigenetic: a molecular link between testicular cancer and environmental exposures

Aurelie Vega1, Marine Baptissart, Françoise Caira

  • 1Génétique Reproduction et Développement, INSERM U 1103 Aubière, France ; Génétique Reproduction et Développement, Clermont Université, Université Blaise Pascal Clermont-Ferrand, France ; Génétique Reproduction et Développement, CNRS, UMR 6293 Aubière, France ; Centre de Recherche en Nutrition Humaine d'Auvergne Clermont-Ferrand, France.

Frontiers in Endocrinology
|December 12, 2012
PubMed

Insights

Environmental exposures altering endocrine functions in early life may lead to testicular dysgenesis syndrome and increase testicular cancer risk. Epigenetic changes in fetal germ cells are implicated in this process.

Area of Science:

  • Reproductive toxicology
  • Cancer epigenetics
  • Developmental biology

Background:

  • In utero and neonatal exposure to endocrine-disrupting chemicals (EDCs) is linked to genital tract abnormalities in rodents.
  • These abnormalities include cryptorchidism, hypospadias, and impaired spermatogenesis, supporting the testicular dysgenesis syndrome hypothesis.
  • Infertility and testicular cancer (TC) share risk factors, with TC incidence rising and often originating from fetal germ cells.

Purpose of the Study:

  • To review the role of chromatin modifications in testicular physiology.
  • To explore how epigenetic alterations contribute to testicular cancer development.
  • To highlight molecular pathways involved in environmental exposure-induced testicular alterations.

Main Methods:

  • Literature review of rodent studies on endocrine disruptors and genital abnormalities.
  • Review of research on epigenetic mechanisms (DNA and histone modifications) in development and disease.
  • Analysis of evidence linking epigenetic changes to testicular cancer.

Main Results:

  • Endocrine disruptors with estrogenic/antiandrogenic activity are associated with reproductive abnormalities.
  • Epigenetic modifications, including DNA and histone alterations, are crucial for fetal germ cell development.
  • These epigenetic changes are implicated in the pathogenesis of testicular cancer.

Conclusions:

  • Environmental exposures impacting endocrine function during development may contribute to testicular dysgenesis syndrome.
  • Epigenetic dysregulation of fetal germ cells is a key mechanism in testicular cancer development.
  • Understanding these chromatin modifications offers insights into testicular cancer etiology and potential interventions.
Keywords:
endocrine disruptersepigeneticphysiologytesticular cancer

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