Antioxidant β-cryptoxanthin enhances porcine oocyte maturation and subsequent embryo development in vitro
Yun-Gwi Park A B , Seung-Eun Lee A B , Yeo-Jin Son A B , Sang-Gi Jeong A B , Min-Young Shin A B , Won-Jae Kim A B , Eun-Young Kim A B C D and Se-Pill Park A B C D
+ Author Affiliations
- Author Affiliations
A Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, Korea.
B Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, Korea.
C Mirae Cell Bio, 288 Achasan-ro, Gwangjin-gu, Seoul, 05066, Korea.
D Corresponding authors. Emails: sppark@jejunu.ac.kr; jlokey@daum.net
Reproduction, Fertility and Development 30(9) 1204-1213 https://doi.org/10.1071/RD17444
Submitted: 24 October 2017 Accepted: 16 February 2018 Published: 23 March 2018
Abstract
Oxidative stress is partly responsible for the poor quality of IVM oocytes. The present study investigated the effects of the antioxidant β-cryptoxanthin on the IVM of porcine oocytes and the in vitro development of the ensuing embryos. Oocytes were matured in IVM medium containing different concentrations of β-cryptoxanthin (0, 0.1, 1, 10 or 100 μM). Treatment with 1 µM β-cryptoxanthin (Group 1B) improved polar body extrusion and the expression of maturation-related genes in cumulus cells and oocytes compared with control. In addition, levels of reactive oxygen species decreased significantly in Group 1B, whereas there were significant increases in glutathione levels and expression of the antioxidant genes superoxide dismutase 1 and peroxiredoxin 5 in this group. After parthenogenetic activation, although the cleavage rate did not differ between the control and 1B groups, the blastocyst formation rate was higher in the latter. Moreover, the total number of cells per blastocyst and relative mRNA levels of pluripotency marker and antioxidant genes were significantly higher in the 1B compared with control group. These results demonstrate that β-cryptoxanthin decreases oxidative stress in porcine oocytes and improves their quality and developmental potential.
Additional keywords: IVM, oxidative stress.
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