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Hazardous Effects of Curcumin on Mouse Embryonic Development through a Mitochondria-Dependent Apoptotic Signaling Pathway
Department of Bioscience Technology and Center for Nanotechnology, Chung Yuan Christian University, Chung Li, Taiwan
Department of Life Science, National Pingtung University of Science and Technology, Pingtung, Taiwan
Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital-Kaohsiung Medical Center and Chang Gung University College of Medicine, Taiwan
* Authors to whom correspondence should be addressed.
Received: 7 July 2010; in revised form: 26 July 2010 / Accepted: 28 July 2010 / Published: 2 August 2010
Abstract: In this study, we examined the cytotoxic effects of curcumin, the yellow pigment of Curcuma longa, on the blastocyst stage of mouse embryos, subsequent embryonic attachment, and outgrowth in vitro and in vivo implantation by embryo transfer. Mouse blastocysts were incubated in medium with or without curcumin (6, 12 or 24 μM) for 24 h. Cell proliferation and growth were investigated using dual differential staining, apoptosis was analyzed with terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL), and implantation and post-implantation development of embryos were measured by in vitro development analysis and in vivo embryo transfer, respectively. Blastocysts treated with 24 μM curcumin displayed significantly increased apoptosis and decreased total cell number. Interestingly, we observed no marked differences in the implantation success rates between curcumin-pretreated and control blastocysts during in vitro embryonic development through implantation with a fibronectin-coated culture dish. However, in vitro treatment with 24 μM curcumin was associated with decreased implantation rate and increased resorption of postimplantation embryos in mouse uterus, as well as decreased fetal weight in the embryo transfer assay. Our results collectively indicate that in vitro exposure to curcumin triggers apoptosis and retards early postimplantation development after transfer to host mice. In addition, curcumin induces apoptotic injury effects on mouse blastocysts through ROS generation, and further promotes mitochondria-dependent apoptotic signaling processes to impair sequent embryonic development.
Keywords: curcumin; blastocyst; apoptosis; development; ROS
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MDPI and ACS Style
Chen, C.-C.; Hsieh, M.-S.; Hsuuw, Y.-D.; Huang, F.-J.; Chan, W.-H. Hazardous Effects of Curcumin on Mouse Embryonic Development through a Mitochondria-Dependent Apoptotic Signaling Pathway. Int. J. Mol. Sci. 2010, 11, 2839-2855.
Chen C-C, Hsieh M-S, Hsuuw Y-D, Huang F-J, Chan W-H. Hazardous Effects of Curcumin on Mouse Embryonic Development through a Mitochondria-Dependent Apoptotic Signaling Pathway. International Journal of Molecular Sciences. 2010; 11(8):2839-2855.
Chen, Chia-Chi; Hsieh, Ming-Shu; Hsuuw, Yan-Der; Huang, Fu-Jen; Chan, Wen-Hsiung. 2010. "Hazardous Effects of Curcumin on Mouse Embryonic Development through a Mitochondria-Dependent Apoptotic Signaling Pathway." Int. J. Mol. Sci. 11, no. 8: 2839-2855.