Apolipoprotein E Effects on Mammalian Ovarian Steroidogenesis and Human Fertility

Trends Endocrinol Metab. 2020 Nov;31(11):872-883. doi: 10.1016/j.tem.2020.06.003. Epub 2020 Jul 16.

Abstract

Apolipoprotein E (ApoE) is a glycoprotein consisting of 299 amino acids, highly produced in the mammalian ovaries. The main function of the ApoE is to transport cholesterol from the peripheral tissues to be metabolized in the liver. In humans, the ApoE gene is polymorphic, with three alleles in a single chromosome-19 locus: APOE2, APOE3, and APOE4. ApoE has also been implicated in cholesterol transport within ovarian follicles to regulate steroidogenesis. Ovarian thecal and granulosa cell cholesterol uptake requires ApoE either by participating in the lipoprotein-receptor complex or lipid endocytosis. In this review, we summarize ApoE role on mammalian ovarian steroidogenesis and on human fertility and discuss recent findings of ApoE4 as an antagonistic pleiotropy gene under adverse environments.

Keywords: antagonistic pleiotropy; apolipoprotein E; fertility; ovary; steroidogenesis.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Apolipoprotein E2 / metabolism
  • Apolipoprotein E3 / metabolism
  • Apolipoprotein E4 / metabolism
  • Apolipoproteins E / pharmacology*
  • Chromosomes, Human, Pair 19 / metabolism
  • Female
  • Humans
  • Ovary / drug effects
  • Ovary / metabolism*

Substances

  • Apolipoprotein E2
  • Apolipoprotein E3
  • Apolipoprotein E4
  • Apolipoproteins E