title: Enhancing effects of serum-rich and cytokine-supplemented culture conditions on developing blastocysts and deriving porcine parthenogenetic embryonic stem cells.
abstract: The present study was conducted to develop an effective method for establishment of porcine parthenogenetic embryonic stem cells (ppESCs) from parthenogenetically activated oocyte-derived blastocysts. The addition of 10% fetal bovine serum (FBS) to the medium on the 3rd day of oocyte culturing improved the development of blastocysts, attachment of inner cell masses (ICMs) onto feeder cells, and formation of primitive ppESC colonies. ICM attachment was further enhanced by basic fibroblast growth factor, stem cell factor, and leukemia inhibitory factor. From these attached ICMs, seven ppESC lines were established. ppESC pluripotency was verified by strong enzymatic alkaline phosphatase activity and the expression of pluripotent markers OCT3/4, Nanog, and SSEA4. Moreover, the ppESCs were induced to form an embryoid body and teratoma. Differentiation into three germ layers (ectoderm, mesoderm, and endoderm) was confirmed by the expression of specific markers for the layers and histological analysis. In conclusion, data from the present study suggested that our modified culture conditions using FBS and cytokines are highly useful for improving the generation of pluripotent ppESCs.
authors: Animal and Plant Quarantine Agency, Anyang 430-757, Korea.
authors: Soo-Kyung
authors: SK
authors: Jung
authors: Hyun-Jung
authors: HJ
authors: Kim
authors: Chan-Lan
authors: CL
authors: Kim
authors: Joo-Hyeong
authors: JH
authors: Lee
authors: Jin-Young
authors: JY
authors: You
authors: Eun-Song
authors: ES
authors: Lee
authors: Jeong-Mook
authors: JM
authors: Lim
authors: Seon Jong
authors: SJ
authors: Yun
authors: Jae-Young
authors: JY
authors: Song
authors: Sang-Ho
authors: SH
authors: Cha
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000166:cytology*; D018929:Cell Culture Techniques / Q000662:veterinary*; D002454:Cell Differentiation; D016207:Cytokines / Q000378:metabolism; D053595:Embryonic Stem Cells / Q000166:cytology*; D010312:Parthenogenesis; D039904:Pluripotent Stem Cells / Q000166:cytology*; D013552:Swine / Q000502:physiology*
chemical_list: D016207:Cytokines
keywords: fetal bovine serum; inner cell mass; parthenogenetic embryonic stem cell; porcine; teratoma