Mdivi-1, mitochondrial fission inhibitor, impairs developmental competence and mitochondrial function of embryos and cells in pigs

作者：Yeon Ji Yeong; Min Sung Hun; Park Hyo Jin; Kim Jin Woo; Lee Yong Hee; Park Soo Yong; Jeong Pil Soo; Park Humdai; Lee Dong Seok; Kim Sun Uk; Chang Kyu Tae; Koo Deog Bon^*

来源：Journal of Reproduction and Development, 2015, 61(2): 81-89.

DOI：10.1262/jrd.2014-070

• Embryos
• Fibroblast cells
• Mdivi-1
• Mitochondria
• Pig

Mitochondria are highly dynamic organelles that undergo constant fusion/fission as well as activities orchestrated by large dynamin-related GTPases. These dynamic mitochondrial processes influence mitochondrial morphology, size and function. Therefore, this study was conducted to evaluate the effects of mitochondrial fission inhibitor, mdivi-1, on developmental competence and mitochondrial function of porcine embryos and primary cells. Presumptive porcine embryos were cultured in PZM-3 medium supplemented with mdivi-1 (0, 10 and 50 mu M) for 6 days. Porcine fibroblast cells were cultured in growth medium with mdivi-1 (0 and 50 mu M) for 2 days. Our results showed that the rate of blastocyst production and cell growth in the mdivi-1 (50 mu M) treated group was lower than that of the control group (P < 0.05). Moreover, loss of mitochondrial membrane potential in the mdivi-1 (50 mu M) treated group was increased relative to the control group (P < 0.05). Subsequent evaluation revealed that the intracellular levels of reactive oxygen species (ROS) and the apoptotic index were increased by mdivi-1 (50 mu M) treatment (P < 0.05). Finally, the expression of mitochondrial fission-related protein (Drp 1) was lower in the embryos and cells in the mdivi-1-treated group than the control group. Taken together, these results indicate that mdivi-1 treatment may inhibit developmental competence and mitochondrial function in porcine embryos and primary cells.

• 出版日期2015-4