Luteolin orchestrates porcine oocyte meiotic progression by maintaining organelle dynamics under oxidative stress

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Title
Luteolin orchestrates porcine oocyte meiotic progression by maintaining organelle dynamics under oxidative stress
Author(s)
Soo-Hyun Park; Pil-Soo Jeong; Ye Eun Joo; Hyo-Gu Kang; Min Ju Kim; Sanghoon Lee; Bong-Seok SongSun-Uk Kim; S K Cho; Bo Woong Sim
Bibliographic Citation
Frontiers in Cell and Developmental Biology, vol. 9, pp. 689826-689826
Publication Year
2021
Abstract
Increasing evidence has demonstrated that oxidative stress impairs oocyte maturation, but the underlying mechanisms remain largely unknown. Here, for the first time, we examined the antioxidant role of luteolin in meiotic progression and the underlying mechanisms. Supplementation of 5 μM luteolin increased the rates of first polar body extrusion and blastocyst formation after parthenogenetic activation, and the expression levels of oocyte competence (BMP15 and GDF9)-, mitogen-activated protein kinase (MOS)-, and maturation promoting factor (CDK1 and Cyclin B)-related genes were also improved. Luteolin supplementation decreased intracellular reactive oxygen species levels and increased the expression levels of oxidative stress-related genes (SOD1, SOD2, and CAT). Interestingly, luteolin alleviated defects in cell organelles, including actin filaments, the spindle, mitochondria, the endoplasmic reticulum, and cortical granules, caused by H2O2 exposure. Moreover, luteolin significantly improved the developmental competence of in vitro-fertilized embryos in terms of the cleavage rate, blastocyst formation rate, cell number, cellular survival rate, and gene expression and markedly restored the competencies decreased by H2O2 treatment. These findings revealed that luteolin supplementation during in vitro maturation improves porcine meiotic progression and subsequent embryonic development by protecting various organelle dynamics against oxidative stress, potentially increasing our understanding of the underlying mechanisms governing the relationship between oxidative stress and the meiotic events required for successful oocyte maturation.
Keyword
LuteolinAntioxidantOxidative stressOrganelle dynamicsIn vitro maturationPorcine oocyte
ISSN
2296-634X
Publisher
Frontiers Media Sa
DOI
http://dx.doi.org/10.3389/fcell.2021.689826
Type
Article
Appears in Collections:
Ochang Branch Institute > Division of Bioinfrastructure > Futuristic Animal Resource & Research Center > 1. Journal Articles
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