title: Chemical enhancement in embryo development and stem cell derivation from single blastomeres.
abstract: Several chemicals targeting the mitogen-activated protein (MAP) kinase signaling pathway, which play an important role in regulating cell growth and differentiation, have shown enhancing effects on the development of the inner cell mass (ICM) and the derivation of ES cells. However, investigation of such chemicals on early embryonic development and the establishment of ES cell lines has not been elucidated. This study was aimed to determine if ACTH, MAP2K1 inhibitor [MAP2K1 (I)], and MAPK14 inhibitor [MAPK14 (I)] could enhance the development of the ICM in preimplantation mouse embryos and blastocyst outgrowths, and the establishment of ES cell lines from blastomeres of early embryos. We have demonstrated that both MAP2K1 (I) and MAPK14 (I) delay early embryo development and inhibit the development of embryos from early blastomeres. On the other hand, ACTH had a positive effect on embryos derived from early blastomeres. As a result, 17 ES cell lines were established. Among these ES cell lines, nine and five ES cell lines were established from single blastomeres of two-cell embryos with and without the supplement of ACTH, respectively. In addition to two-cell isolated blastomeres, three ES cell lines were established from blastomeres of four-cell embryos only with the supplement of ACTH. Our results suggest that ACTH can enhance the derivation of ES cells from single blastomere-derived embryos.
authors.affiliation: Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia, USA.
authors.forename: Chanchao
authors.initials: C
authors.lastname: Lorthongpanich
authors.forename: Shang-Hsun
authors.initials: SH
authors.lastname: Yang
authors.forename: Karolina
authors.initials: K
authors.lastname: Piotrowska-Nitsche
authors.forename: Rangsun
authors.initials: R
authors.lastname: Parnpai
authors.forename: Anthony W S
authors.initials: AW
authors.lastname: Chan
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000494:pharmacology; D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D001755:Blastocyst / Q000166:cytology / Q000187:drug effects / Q000201:enzymology; D001757:Blastomeres / Q000166:cytology / Q000187:drug effects* / Q000201:enzymology; D002460:Cell Line; D003366:Cosyntropin / Q000494:pharmacology*; D047108:Embryonic Development / Q000187:drug effects* / Q000502:physiology; D053595:Embryonic Stem Cells / Q000166:cytology / Q000502:physiology*; D005260:Female; D007093:Imidazoles / Q000494:pharmacology*; D048369:MAP Kinase Kinase 1 / Q000037:antagonists & inhibitors / Q000378:metabolism; D051379:Mice; D048308:Mitogen-Activated Protein Kinase 14 / Q000037:antagonists & inhibitors / Q000378:metabolism; D039904:Pluripotent Stem Cells / Q000166:cytology / Q000502:physiology*; D047428:Protein Kinase Inhibitors / Q000494:pharmacology*; D011725:Pyridines / Q000494:pharmacology*
chemical_list: D015415:Biomarkers; D007093:Imidazoles; D047428:Protein Kinase Inhibitors; D011725:Pyridines; D003366:Cosyntropin; D000324:Adrenocorticotropic Hormone; D048308:Mitogen-Activated Protein Kinase 14; D048369:MAP Kinase Kinase 1; C093642:SB 203580
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