Serial nuclear transfer improves the development of interspecies reconstructed giant panda (Aluropoda melanoleuca) embryos |
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Authors: | Jinsong Li Dayuan Chen Zhiming Han Ziyu Zhu Duancheng Wen Qingyuan Sun Zhonghua Liu Minkang Wang Li Lian Jun Du Pengyan Wang Hemin Zhang |
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Institution: | LI Jinsong(,),CHEN Dayuan(),HAN Zhiming(,),ZHU Ziyu(,),WEN Duancheng(),SUN Qingyuan(),LIU Zhonghua(,),WANG Minkang(,),LIAN Li(),DU Jun(),WANG Pengyan(),ZHANG Hemin() |
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Abstract: | Interspecies somatic nuclear transfer (NT) may provide a new approach for preservation of the endangered rare species. Previous
interspecies cloning studies have shown that a nucleus from a quiescent somatic cell supports early development of reconstructed
embryos in the ooplasm from another species. In this study, we transferred nonquiescent somatic cells from a giant panda into
the perivitelline space of the enucleated rabbit oocytes. After electrofusion (at the rate of 71.6%) and electrical activation,
4.2% of the panda-rabbit reconstructed embryos developed to blastocyst in vitro. For improving the development rate of reconstructed embryos, we used serial NT in this study, i.e. blastomeres from reconstructed
morulae were transferred into the perivitelline space of the enucleated rabbit oocytes. The fusion rates in the groups of
serial I, serial II and serial III were 79.5%, 84.1% and 78.0%, respectively, having no difference with that of somatic group.
And the blastocyst rates in serial NT groups were 19.4%, 13.5% and 10.3%, respectively, which are significantly higher than
that in somatic NT group. These results indicate that the nuclei from nonquiescent somatic cells can support early development
of reconstructed embryos and serial NT can improve the development rate of interspecies reconstructed embryos.
These authors contributed equally to this work. |
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Keywords: | Keywods" target="_blank">Keywods nonquiescent cell giant panda rabbit interspecies nuclear transfer serial nuclear transfer |
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