Optimization of Culture and Cryopreservation of Hand-Made Clone (HMC) Buffalo (Bubalus bubalis) Embryos
文献类型: 外文期刊
第一作者: Yang, Chunyan
作者: Yang, Chunyan;Pang, Chunying;Zheng, Haiying;Huang, Fenxiang;Wang, Jian;Shang, Jianghua;Yang, Bingzhuang;Liang, Xianwei
作者机构:
关键词: buffalo;hand-made clone;in vitro culture;cryopreservation
期刊名称:BUFFALO BULLETIN ( 影响因子:0.172; 五年影响因子:0.234 )
ISSN: 0125-6726
年卷期: 2013 年 32 卷
页码:
收录情况: SCI
摘要: This study was conducted to optimize the culture and cryopreservation conditions for buffalo hand-made clone (HMC) embryos. Microdrop (MD), well of the well (WOW), flat surface (FS) systems were adopted to culture HMC reconstructed embryos in vitro. The derived HMC blastocysts were vitrified either with 40% EG, 25% EG + 25% DMSO or 20% EG + 20% DMSO + 0.5 M sucrose. Furthermore, the efficiencies of HMC and traditional somatic cell nuclear transfer (SCNT) were also compared. The results showed that: (1) the cleavage rate of HMC embryos cultured in WOW was higher than those cultured on FS (70.5% vs 55.8%, p<0.05) and in MD (70.5% vs 50.0%, p<0.01); also, the blastocyst rate of HMC embryos derived from WOW system (40.0%) was higher than those derived from FS (19.8%) and MD (8.3%) systems (p<0.01); (2) the cryosurvival rate of blastocysts vitrified with 20% EG + 20% DMSO + 0.5 M sucrose was higher than those vitrified with 40% EG (90.9% vs 62.0%, p<0.01); (3) both the fusion and blastocyst rates of HMC reconstructed embryos were higher than those of SCNT reconstructed embryos (89.1% vs 79.8%, p<0.05; 40.0% vs 19.8%, p<0.01), whereas the cryotolerances of HMC and SCNT blastocysts were not different from each other (90.9% vs 92.3%). In conclusion, WOW is the most suitable method for culture of HMC embryos, and vitrification of HMC blastocysts with 20% EG + 20% DMSO + 0.5M sucrose results in a high cryosurvival rate. HMC can be an alternative to traditional SCNT in buffalo.
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