title: [Role of PTEN in mouse pre-implantation development].
abstract: The PI3K/Akt signal transduction pathway plays an important role in pre-implantation embryonic development. The tumor suppressor gene PTEN negatively regulates the PI3K/Akt pathway. Although PI3K is constitutively activated during pre-implantation embryonic development, currently no evidence shows the presence and possible involvement of PTEN in early embryo development. We investigated the expression of PTEN protein in germinal vesicle (GV) stage oocytes as well as in pre-implantation embryos. The activated form of PTEN was distributed in the peripheral of GV oocytes and compact morula. Treatment of GV oocytes with PTEN inhibitor bpV(pic) did not affect the maturation of the oocyte, but significantly impaired embryonic development. Thus, our study suggests the necessary role of PTEN in pre-implantation embryonic development.
authors.affiliation: Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming 650223, China. wangxh06@post.kiz.ac.cn
authors.forename: Xi-Hong
authors.initials: XH
authors.lastname: Wang
authors.forename: Xie-Chao
authors.initials: XC
authors.lastname: He
authors.forename: Shu-Biao
authors.initials: SB
authors.lastname: Han
authors.forename: Wei-Zhi
authors.initials: WZ
authors.lastname: Ji
authors.forename: Ping
authors.initials: P
authors.lastname: Zheng
mesh_terms: D000818:Animals; D010064:Embryo Implantation; D047108:Embryonic Development; D005260:Female; D008297:Male; D051379:Mice / Q000196:embryology* / Q000235:genetics / Q000378:metabolism*; D008813:Mice, Inbred ICR; D009865:Oocytes / Q000378:metabolism; D051059:PTEN Phosphohydrolase / Q000235:genetics / Q000378:metabolism*; D011247:Pregnancy
chemical_list: D051059:PTEN Phosphohydrolase