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Roles of OCT4 in pathways of embryonic development and cancer progression

Samir Kumar Patra1

  • 1Epigenetics and Cancer Research Laboratory, Biochemistry and Molecular Biology Group, Department of Life Science, National Institute of Technology, Rourkela, Odisha, 769008, India.

Mechanisms of Ageing and Development
|June 13, 2020
PubMed

Insights

Octamer-binding transcription factor 4 (OCT4) is crucial for reprogramming somatic cells. Its role in human embryonic development, cancer, and aging is increasingly understood through its interactions with DNA and epigenetic regulation.

Area of Science:

  • Cellular reprogramming and developmental biology
  • Epigenetics and gene regulation
  • Cancer biology and aging

Background:

  • Somatic cell reprogramming to pluripotency involves transcription factors like OCT4, SOX2, KLF4, and c-MYC.
  • The precise molecular mechanisms, particularly in human embryonic development, remain incompletely understood.
  • Recent research highlights OCT4's significance in human zygotic genome activation (ZGA) and DNA binding modulation.

Purpose of the Study:

  • To elucidate the molecular and cellular mechanisms of OCT4 in human embryonic development.
  • To investigate the role of OCT4 in epigenetic modulation and its impact on cancer progression.
  • To understand the implications of OCT4 silencing in adult somatic cells concerning aging.

Main Methods:

  • Analysis of OCT4 protein folding patterns and DNA-binding sequences.
  • Investigation of epigenetic modifications affecting the OCT4 gene.
  • Examination of post-translational modifications of OCT4 protein activity.
  • Studies on chromatin organization and epigenetic landscapes in relation to OCT4 function.

Main Results:

  • OCT4 plays a critical role in human zygotic genome activation (ZGA) and lineage specification.
  • Epigenetic dysregulation involving OCT4 is linked to cancer progression.
  • OCT4 gene epigenetic modulation and protein activity are key factors in various cancers.
  • OCT4 silencing in adult somatic cells may influence the aging process.

Conclusions:

  • Emerging consensus points to the crucial role of chromatin organization and epigenetics in OCT4's function during development and disease.
  • OCT4 interactions with regulatory DNA sequences are vital for embryonic development, from ZGA to lineage specification.
  • Deregulation of the epigenome niche impacts OCT4's role in cancer and aging, underscoring its multifaceted importance.
Keywords:
Breast cancerCancersEmbryonic developmentEpigenetic modificationsEpigenomeOCT4PluripotencyPluripotency inducing factorsProstate cancerTotipotencyZygote

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