PMID- 19786569 OWN - NLM STAT- MEDLINE DCOM- 20091211 LR - 20211203 IS - 1098-5549 (Electronic) IS - 0270-7306 (Print) IS - 0270-7306 (Linking) VI - 29 IP - 23 DP - 2009 Dec TI - Crucial role for Mst1 and Mst2 kinases in early embryonic development of the mouse. PG - 6309-20 LID - 10.1128/MCB.00551-09 [doi] AB - Mammalian sterile 20-like kinases 1 and 2 (Mst1 and Mst2, respectively) are potent serine/threonine kinases that are involved in cell proliferation and cell death. To investigate the physiological functions of Mst1 and Mst2, we generated Mst1 and Mst2 mutant mice. Mst1(-/-) and Mst2(-/-) mice were viable and fertile and developed normally, suggesting possible functional overlaps between the two genes. A characterization of heterozygous and homozygous combinations of Mst1 and Mst2 mutant mice showed that mice containing a single copy of either gene underwent normal organ development; however, Mst1(-/-); Mst2(-/-) mice lacking both Mst1 and Mst2 genes started dying in utero at approximately embryonic day 8.5. Mst1(-/-); Mst2(-/-) mice exhibited severe growth retardation, failed placental development, impaired yolk sac/embryo vascular patterning and primitive hematopoiesis, increased apoptosis in placentas and embryos, and disorganized proliferating cells in the embryo proper. These findings indicate that both Mst1 and Mst2 kinases play essential roles in early mouse development, regulating placental development, vascular patterning, primitive hematopoiesis, and cell proliferation and survival. FAU - Oh, Sangphil AU - Oh S AD - National Research Laboratory of Molecular Genetics, Department of Biological Science, KAIST, Daejeon 305-701, South Korea. FAU - Lee, Dongjun AU - Lee D FAU - Kim, Tackhoon AU - Kim T FAU - Kim, Tae-Shin AU - Kim TS FAU - Oh, Hyun Jung AU - Oh HJ FAU - Hwang, Chae Young AU - Hwang CY FAU - Kong, Young-Yun AU - Kong YY FAU - Kwon, Ki-Sun AU - Kwon KS FAU - Lim, Dae-Sik AU - Lim DS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090928 PL - United States TA - Mol Cell Biol JT - Molecular and cellular biology JID - 8109087 RN - EC 2.7.1.- (Stk4 protein, mouse) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.1 (Serine-Threonine Kinase 3) RN - EC 2.7.11.1 (Stk3 protein, mouse) SB - IM MH - Animals MH - Apoptosis MH - Cell Proliferation MH - Embryo, Mammalian/blood supply/cytology/*enzymology MH - *Embryonic Development MH - Female MH - Gene Expression Regulation, Developmental MH - Gene Expression Regulation, Enzymologic MH - Hematopoiesis MH - Mice MH - Mice, Knockout MH - Placenta/abnormalities/enzymology MH - Pregnancy MH - Protein Serine-Threonine Kinases/deficiency/genetics/*metabolism MH - Serine-Threonine Kinase 3 MH - Signal Transduction PMC - PMC2786698 EDAT- 2009/09/30 06:00 MHDA- 2009/12/16 06:00 PMCR- 2010/06/01 CRDT- 2009/09/30 06:00 PHST- 2009/09/30 06:00 [entrez] PHST- 2009/09/30 06:00 [pubmed] PHST- 2009/12/16 06:00 [medline] PHST- 2010/06/01 00:00 [pmc-release] AID - MCB.00551-09 [pii] AID - 0551-09 [pii] AID - 10.1128/MCB.00551-09 [doi] PST - ppublish SO - Mol Cell Biol. 2009 Dec;29(23):6309-20. doi: 10.1128/MCB.00551-09. Epub 2009 Sep 28.