Effects of griseofulvin on in vitro porcine oocyte maturation and embryo development |
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Authors: | Yi‐Liang Miao Xia Zhang Jian‐Guo Zhao Lee Spate Ming‐Tao Zhao Clifton N Murphy Randall S Prather Qing‐Yuan Sun Heide Schatten |
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Institution: | 1. Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri;2. Division of Animal Science, University of Missouri, Columbia, Missouri;3. State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China |
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Abstract: | Griseofulvin is an orally administered antifungal drug that affects microtubule formation in vitro and interferes with microtubule dynamics in vivo as clearly shown for mitotic cells in several cell systems. This article reports the effects of griseofulvin on in vitro maturation of porcine oocytes and subsequent effects on embryo development. Our results revealed a concentration‐dependent effect on meiotic spindles with 20–40 μM griseofulvin affecting oocyte maturation, and 40 μM affecting fertilization and embryo development. These concentrations of griseofulvin did not affect mitochondrial and cortical granule distribution that also depend on microtubule and cytoskeletal functions during oocyte maturation. Specific effects on the meiotic spindle included spindle disorganization and aberrant chromosome separation displayed as prominent chromosome clusters in oocytes treated with 40 μM griseofulvin. These results strongly suggested that griseofulvin affected porcine oocyte in vitro maturation and following embryo development by disturbing microtubule dynamics. Environ. Mol. Mutagen. 2012. © 2012 Wiley Periodicals, Inc. |
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Keywords: | microtubules cytoskeleton aneuploidy meiosis spindle fertilization |
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