The birth of the first batch of cloned sheep in Shanghai passed the expert appraisal yesterday

Introduction: in Sanzao, Nanhui, Shanghai, 3 sheep quietly come to the world Unlike other sheep, they are all artificially cloned Experts said it was the first cloned sheep born in Shanghai Today, the appraisal committee composed of seven experts from the National Natural Science Foundation of China, Fudan University and Shanghai Second Medical University demonstrated and appraised the project Shanghai transgenic research center and Shanghai Jielong Bioengineering Co., Ltd are the developers of these cloned sheep The project is a part of the key project of therapeutic cloning issued by Shanghai Science and Technology Commission, aiming to solve the problem of new ways for patients to replace tissues and organs In order to further verify the research results of the upstream part of "therapeutic cloning" and find out the problem of immune rejection in the transplantation of human tissues and organs by cloning, the research team led by Cheng Guoxiang, selected saneng dairy goat to start the cloning research of goat fetal fibroblasts, and successfully achieved this major research result in only half a year According to expert identification and demonstration, the technical indicators of "somatic cloning of Saanen milk goat" of Geron biological company are higher than those reported at home and abroad in terms of pregnancy rate and lambing rate At the same time, the research developed the direct transfer technology of reconstructed embryos, established an efficient Goat Somatic cell cloning technology platform, and reached the advanced level at home and abroad.