title: A modified culture method significantly improves the development of mouse somatic cell nuclear transfer embryos.
abstract: Many strategies have been established to improve the efficiency of somatic cell nuclear transfer (SCNT), but relatively few focused on improving culture conditions. The effect of different culture media on preimplantation development of mouse nuclear transfer embryos was investigated. A modified sequential media method, named D media (M16/KSOM and CZB-EG/KSOM), was successfully established that significantly improves SCNT embryo development. Our result demonstrated that while lacking any adverse effect on in vivo fertilized embryos, the D media dramatically improves the blastocyst development of SCNT embryos compared with other commonly used media, including KSOM, M16, CZB, and alphaMEM. Specifically, the rate of blastocyst formation was 62.3% for D1 (M16/KSOM) versus 10-30% for the other media. An analysis of media components indicated that removing EDTA and glutamine from the media can be beneficial for early SCNT embryo development. Our results suggest that in vitro culture environment plays an important role in somatic cell reprogramming, and D media represent the most efficient culture method reported to date to support mouse SCNT early embryo development in vitro.
authors.affiliation: State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, PR China.
authors.forename: Xiangpeng
authors.initials: X
authors.lastname: Dai
authors.forename: Jie
authors.initials: J
authors.lastname: Hao
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhou
mesh_terms: D000818:Animals; D017209:Apoptosis; D001755:Blastocyst / Q000502:physiology; D002460:Cell Line; D003470:Culture Media / Q000494:pharmacology*; D046149:Embryo Culture Techniques; D004624:Embryo Transfer / Q000379:methods; D047108:Embryonic Development; D005260:Female; D005455:Fluorescent Antibody Technique; D051379:Mice; D008810:Mice, Inbred C57BL; D053652:Nuclear Transfer Techniques; D013234:Stem Cells / Q000166:cytology
chemical_list: D003470:Culture Media