| 马-牛无透明带卵异种克隆的研究 |
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| 引用本文： | 朱化彬,沈彦军,杜卫华,鞠光伟,庞云渭,郝海生,赵学明,王栋,王宗礼.马-牛无透明带卵异种克隆的研究[J].中国农业科学,2011,44(16):3413-3419. |
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| 作者姓名： | 朱化彬 沈彦军 杜卫华 鞠光伟 庞云渭 郝海生 赵学明 王栋 王宗礼 |
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| 作者单位： | 1. 甘肃农业大学动物科学技术学院;
2. 中国农业科学院北京畜牧兽医研究所;
3. 山东大学齐鲁医院 |
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| 基金项目： | 国家自然科学基金(30700584); “863”项目(2007AA10Z154); 科技支撑项目(2008BADB2B09); 跨越计划项目 |
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| 摘 要： | 【目的】开展异种克隆，为濒危动物的保护、细胞核重编程与核质互作研究提供新途径。【方法】以马耳成纤维细胞为供体，牛卵母细胞为受体，采用无透明带手工克隆方法构建异种胚胎，比较不同的激活液、培养液、体细胞同期方式、核移植方法对马-牛异种克隆胚胎体外发育的影响。【结果】（1）A23187 + 6-DMAP联合激活获得的克隆胚胎发育较好，囊胚率2.60%；（2）克隆胚胎于mCR1aa中的卵裂率和桑葚率显著高于CR1aa和SOF（83.65%vs 77.49%，74.87%；22.36%vs19.37%，18.98%，P＜0.05），且发育到囊胚（2.72%），CR1aa与SOF间无显著差异；（3）供体细胞经血清饥饿或接触抑制处理后，获得的异种克隆胚的融合率、卵裂率、桑葚率和囊胚率无显著差异；（4）无透明带手工克隆法的融合率显著高于显微注射法（90.33% vs 72.94%），卵裂率、桑葚率和囊胚率无显著差异；（5）马-牛异种克隆胚与牛同种克隆胚比较，融合率和卵裂率无差别，桑葚率和囊胚率有显著差异（21.78%vs63.52%；2.71%vs37.48%）。【结论】牛卵母细胞能支持马体细胞去分化，进行核重编程。但由于二者的物种距离较远，异种克隆胚胎的发育能力远低于同种克隆胚胎。
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| 关 键 词： | 马 牛 异种克隆 手工克隆 |
| 收稿时间： | 2009-12-01 |
Development of Equine-Bovine Interspecies Cloned Embryos |
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| ZHU Hua-bin,SHEN Yan-jun,DU Wei-hua,JU Guang-wei,PANG Yun-wei,HAO Hai-sheng,ZHAO Xue-ming,WANG Dong,WANG Zong-li.Development of Equine-Bovine Interspecies Cloned Embryos[J].Scientia Agricultura Sinica,2011,44(16):3413-3419. |
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| Authors: | ZHU Hua-bin SHEN Yan-jun DU Wei-hua JU Guang-wei PANG Yun-wei HAO Hai-sheng ZHAO Xue-ming WANG Dong WANG Zong-li |
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| Institution: | ZHU Hua-bin1,2,SHEN Yan-jun2,3,DU Wei-hua2,JU Guang-wei2,PANG Yun-wei2,HAO Hai-sheng2,ZHAO Xue-ming2,WANG Dong2,WANG Zong-li1(1College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,2 Institute of Animal Science,CAAS,Beijing 100193,3Qilu Hospital of Shandong University,Jinan 250012) |
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| Abstract: | 【Objective】The objective of the study was to investigate interspecies somatic cell nuclear transfer (iSCNT) embryonic potential during preimplantation development.【Method】The equine- bovine embryos were reconstructed via hand-made cloning using bovine oocytes as recipient cytoplasm and equine fibroblast as donor cells. Karyotype and the developmental rate were analyzed. 【Result】 Activated with A23187 + 6-DMAP, the iSCNT embryos could develop to blastocyst (2.60%). The cleavage rate and morual rate of cloned embryos cultured in mCR1aa were higher than CR1aa and SOF. Blastocysts were harvested in mCR1aa (2.72%). But there was no difference between CR1aa and SOF. No significant difference was observed in the developmental capacity of cloned embryos and the quality of donor treated with serum starvation or confluence inhibition. The fusion rate of embryos cloned by HMC was higher than microinjection method (90.33% vs 72.94%). Compared equine-bovine iSCNT with bovine–bovine SCNT, there was a significant difference in morual rate and blastocyst rate (21.78% vs 63.52%；2.71% vs 37.48%). 【Conclusion】 It is concluded that the bovine oocytes can support the dedifferentiation and reprogramming of horse somatic cell. However, due to the distance between the two species, the capacity of development of interspecies cloned embryos is far lower than the same species cloned embryos. |
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| Keywords: | equine bovine interspecies clone hand-made clone |
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