Abnormal cholesterol-cholesteryl ester metabolism impairs mouse oocyte quality during ovarian aging.

ABSTRACT:

Background

Ovarian aging-induced decline in oocyte quality has been a main issue in women of advanced maternal age. However, the potential mechanism remains elusive, and there are no effective strategies to ameliorate aged oocyte quality. The lipid metabolism of oocytes has drawn great attention, but the intrinsic regulation of oocyte quality by metabolites, metabolic enzymes, and intracellular mediators is less well-characterized.

Methods

Targeted lipidomics was employed to detect the neutral lipids in oocytes during maturation. We used 4,4-difluoro-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indacene (BODIPY 493/503) and Filipin to stain cholesteryl ester and free cholesterol, respectively. The Cholesterol/Cholesteryl Ester Quantification Assay kit was used further to quant

SUBMITTER: Zhang S 

PROVIDER: S-EPMC12642260 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature