Caloric restriction prevents inheritance of polycystic ovary syndrome through oocyte-mediated DNA methylation reprogramming

Cell Metab. 2025 Apr 1;37(4):920-935.e6. doi: 10.1016/j.cmet.2025.01.014. Epub 2025 Feb 21.

Abstract

Polycystic ovary syndrome (PCOS) is a prevalent metabolic and reproductive endocrine disorder with strong heritability. However, the independent role of oocytes in mediating this heritability remains unclear. Utilizing in vitro fertilization-embryo transfer and surrogacy, we demonstrated that oocytes from androgen-exposed mice (F1) transmitted PCOS-like traits to F2 and F3 generations. Notably, caloric restriction (CR) in F1 or F2 effectively prevented this transmission by restoring disrupted DNA methylation in oocyte genes related to insulin secretion and AMPK signaling pathways. Further detection in adult tissues of offspring revealed dysregulated DNA methylation and expression of those genes (e.g., Adcy3, Gnas, and Srebf1) were reversed by maternal CR. Moreover, similar benefits of CR were observed in aberrant embryonic methylome of women with PCOS. These findings elucidate the essential role of CR in preventing PCOS transmission via methylation reprogramming, emphasizing the importance of preconception metabolic management for women with PCOS.

Keywords: ADCY3; DNA methylation; GCK; GNAS; PCOS; SREBF1; caloric restriction; embryo; oocyte; transgenerational inheritance.

MeSH terms

  • Animals
  • Caloric Restriction*
  • DNA Methylation*
  • Female
  • Humans
  • Mice
  • Mice, Inbred C57BL
  • Oocytes* / metabolism
  • Polycystic Ovary Syndrome* / genetics
  • Polycystic Ovary Syndrome* / metabolism
  • Polycystic Ovary Syndrome* / prevention & control