4.7 Article

cAMP Modulators before In Vitro Maturation Decrease DNA Damage and Boost Developmental Potential of Sheep Oocytes

期刊

ANIMALS
卷 11, 期 9, 页码 -

出版社

MDPI
DOI: 10.3390/ani11092512

关键词

sheep; embryo; oocyte; in vitro maturation; DNA damage; cAMP; IBMX; forskolin

资金

  1. Spanish Ministry of Economy and Competitiveness [AGL2017-89017-R]
  2. University of Castilla-La Mancha scholarships
  3. Junta de Comunidades de Castilla-La Mancha

向作者/读者索取更多资源

In vitro maturation of oocytes has the potential to generate a large number of embryos for research and assisted reproduction technologies, but the developmental ability of these oocytes is lower than those matured in vivo. This study found that pre-treating oocytes with cAMP modulating agents improved DNA damage repair mechanism and increased developmental competence. The use of forskolin and IBMX before in vitro maturation could be a promising approach to enhance the quality of in vitro matured oocytes.
Simple Summary Oocyte in vitro maturation has massive potential for the generation of great numbers of embryos for research and for the application of assisted reproductive technologies, such as in vitro embryo production. However, the developmental ability of in vitro matured oocytes is lower than those matured in vivo. Here, incubating the oocytes with cAMP modulating agents for two hours before in vitro maturation decreased oocyte DNA damage and increased the number of embryos generated after in vitro fertilization. The present findings could help to develop new methods to improve the quality and developmental potential of in vitro matured oocytes. To date, the underlying mechanisms by which cAMP modulators act during in vitro maturation to improve oocyte developmental competence are poorly understood. Here, we sought to fill this knowledge gap by evaluating the use of phosphodiesterase inhibitor 3-isobutyl-1-methylxanthine (IBMX) and adenylyl cyclase activator forskolin during a culture period of 2 h before in vitro maturation (pre-IVM) on the nuclear and cytoplasmic maturation features in essential organelles, cumulus cells activity, and in vitro developmental potential of sheep oocytes. Results showed that pre-IVM treatment significantly decreased (p < 0.05) the DNA damage of mature oocytes (pre-IVM = 2.08% +/- 3.51% vs. control = 20.58% +/- 3.51%) and increased (p <= 0.05) expanded blastocyst rates compared to the control (from the total of oocytes: pre-IVM = 23.89% +/- 1.47% vs. control = 18.22% +/- 1.47%, and from the cleaved embryos: pre-IVM = 45.16% +/- 1.73% vs. control = 32.88% +/- 1.73%). Considering that oocytes are highly vulnerable to the accumulation of DNA damage because of exposure to in vitro culture conditions, our results suggest that the modulation of intra-oocyte cAMP levels with forskolin and IBMX before IVM might afford oocytes a more effective DNA repair mechanism to overcome damage obstacles and ultimately improve developmental competence. This previously unappreciated action of cAMP modulators could help to develop improved methods for assisted reproduction technologies in animal and clinical research.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据