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Ectoine Globally Hypomethylates DNA in Skin Cells and Suppresses Cancer Proliferation

Majjid A Qaria1, Chunyan Xu1, Ran Hu2

  • 1Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.

Marine Drugs
|December 22, 2023
PubMed

Insights

Ectoine, a DNA protectant, was found to reduce DNA methylation in skin cells, potentially activating cancer-suppressing genes. This suggests ectoine may act as an anti-aging agent by preventing aberrant DNA methylation.

Area of Science:

  • Epigenetics
  • Dermatology
  • Cancer Biology

Background:

  • Aberrant DNA methylation silences genes crucial for cancer suppression.
  • Conventional hypomethylation drugs like 5-aza-2-deoxycytidine cause severe side effects.

Purpose of the Study:

  • To investigate ectoine's role in skin cell DNA methylation and cancer cell proliferation.
  • To assess ectoine's potential as an anti-aging and anti-cancer agent.

Main Methods:

  • Comprehensive methylome sequencing and 5-methyl cytosine (5mC) analysis.
  • Skin cell proliferation and tumorigenicity assays in athymic nude mice.
  • Analysis of DNA epigenetic modification-related gene expression (Dnmt1, Dnmt3a, Dnmt3b, Dnmt3l, Hdac1, Hdac2, Kdm3a, Mettl3, Mettl14, Snrpn, Mest).

Main Results:

  • Extended ectoine treatment globally hypomethylated DNA in skin cells, particularly in CpG islands (CGIs).
  • A significant reduction in 5mC percentage was observed.
  • Ectoine mildly inhibited skin cell proliferation and did not induce tumorigenicity.
  • Modulation of key epigenetic regulator gene expression was observed.

Conclusions:

  • Ectoine exhibits mild DNA demethylating effects in skin cells.
  • Ectoine modulates the expression of genes involved in epigenetic modifications.
  • Ectoine reduces cell proliferation and shows potential as an anti-aging agent by preventing DNA hypermethylation and activating tumor suppressors.
Keywords:
DNA hypomethylationDNMTsanti-agingcancercell proliferationectoineepigenetic modificationsskin cellstumorigenicity

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