Journal
JOURNAL OF REPRODUCTION AND DEVELOPMENT
Volume 61, Issue 2, Pages 81-89Publisher
SOCIETY REPRODUCTION & DEVELOPMENT-SRD
DOI: 10.1262/jrd.2014-070
Keywords
Embryos; Fibroblast cells; Mdivi-1; Mitochondria; Pig
Funding
- Next-Generation BioGreen 21 Program [PJ01117604]
- Bio-industry Technology Development Program through the Rural Development Administration [112130031HD030]
- Ministry of Agriculture, Food and Rural Affairs
- KRIBB Research Initiative Program, Republic of Korea [KGM4251314]
- National Research Council of Science & Technology (NST), Republic of Korea [KGM4251314] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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