Fernando H Biase, Chanaka Rabel, Michel Guillomot, Isabelle Hue, Kalista Andropolis, Colleen A Olmstead, Rosane Oliveira, Richard Wallace, Daniel Le Bourhis, Christophe Richard, Evelyne Campion, Aurélie Chaulot-Talmon, Corinne Giraud-Delville, Géraldine Taghouti, Hélène Jammes, Jean-Paul Renard, Olivier Sandra, Harris A Lewin
A major unresolved issue in the cloning of mammals by somatic cell nuclear transfer (SCNT) is the mechanism by which the process fails after embryos are transferred to the uterus of recipients before or during the implantation window. We investigated this problem by using RNA sequencing (RNA-seq) to compare the transcriptomes in cattle conceptuses produced by SCNT and artificial insemination (AI) at day (d) 18 (preimplantation) and d 34 (postimplantation) of gestation. In addition, endometrium was profiled to identify the communication pathways that might be affected by the presence of a cloned conceptus, ultimately leading to mortality before or during the implantation window...
December 20, 2016: Proceedings of the National Academy of Sciences of the United States of America