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  • 1
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    Promotion of trophoblast stem cell proliferation by FGF4 (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-12-16
    Description: The trophoblast cell lineage is essential for the survival of the mammalian embryo in utero. This lineage is specified before implantation into the uterus and is restricted to form the fetal portion of the placenta. A culture of mouse blastocysts or early postimplantation trophoblasts in the presence of fibroblast growth factor 4 (FGF4) permitted the isolation of permanent trophoblast stem cell lines. These cell lines differentiated to other trophoblast subtypes in vitro in the absence of FGF4 and exclusively contributed to the trophoblast lineage in vivo in chimeras.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tanaka, S -- Kunath, T -- Hadjantonakis, A K -- Nagy, A -- Rossant, J -- New York, N.Y. -- Science. 1998 Dec 11;282(5396):2072-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9851926" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/cytology ; Cell Differentiation ; Cell Division ; Cell Line ; Cell Lineage ; Chimera ; Culture Media, Conditioned ; Embryo, Mammalian/cytology ; Female ; Fibroblast Growth Factor 4 ; Fibroblast Growth Factors/*pharmacology/physiology ; Fibroblasts/cytology ; Gene Expression Regulation, Developmental ; Genetic Markers ; Karyotyping ; Male ; Mice ; Models, Biological ; Proto-Oncogene Proteins/*pharmacology/physiology ; Signal Transduction ; Stem Cells/*cytology/metabolism ; Trophoblasts/*cytology/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Mouse embryonic stem cells and reporter constructs to detect developmentally regulated genes (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-04-28
    Description: A strategy was devised for identifying regions of the mouse genome that are transcriptionally active in a temporally and spatially restricted manner during development. The approach is based on the introduction into embryonic stem cells of two types of lacZ reporter constructs that can be activated by flanking mouse genomic sequences. Embryonic stem cells containing the lacZ constructs were used to produce chimaeric mice. Developmental regulation of lacZ expression occurred at a high frequency. Molecular cloning of the flanking endogenous genes and introduction of these potential insertional mutations into the mouse germ line should provide an efficient means of identifying and mutating novel genes important for the control of mammalian development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gossler, A -- Joyner, A L -- Rossant, J -- Skarnes, W C -- New York, N.Y. -- Science. 1989 Apr 28;244(4903):463-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mount Sinai Hospital Research Institute, Division of Molecular and Developmental Biology, Toronto, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2497519" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Chimera ; Cloning, Molecular ; Embryo, Mammalian/*metabolism ; Galactosidases/*genetics ; *Gene Expression Regulation ; Genetic Vectors ; Germ Cells ; Heat-Shock Proteins/genetics ; Male ; Mice ; Promoter Regions, Genetic ; Stem Cells/*metabolism ; Transfection ; Transformation, Genetic ; beta-Galactosidase/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Cardiac malformation in neonatal mice lacking connexin43 (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-03-24
    Description: Gap junctions are made up of connexin proteins, which comprise a multigene family in mammals. Targeted mutagenesis of connexin43 (Cx43), one of the most prevalent connexin proteins, showed that its absence was compatible with survival of mouse embryos to term, even though mutant cell lines showed reduced dye coupling in vitro. However, mutant embryos died at birth, as a result of a failure in pulmonary gas exchange caused by a swelling and blockage of the right ventricular outflow tract from the heart. This finding suggests that Cx43 plays an essential role in heart development but that there is functional compensation among connexins in other parts of the developing fetus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reaume, A G -- de Sousa, P A -- Kulkarni, S -- Langille, B L -- Zhu, D -- Davies, T C -- Juneja, S C -- Kidder, G M -- Rossant, J -- New York, N.Y. -- Science. 1995 Mar 24;267(5205):1831-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7892609" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Connexin 43/*genetics/*physiology ; Embryo, Mammalian/cytology ; Heart Defects, Congenital/*genetics/pathology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Respiratory Transport/genetics ; Stem Cells ; Ventricular Outflow Obstruction/congenital/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    In situ detection of beta-galactosidase in lenses of transgenic mice with a gamma-crystallin/lacZ gene (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-01-23
    Description: Transgenic mice carrying the gamma 2-crystallin promoter fused to the coding region of the bacterial lacZ gene were generated. The offspring of three founder mice expressed high levels of the enzyme solely in the central nuclear fiber cells of the lens as measured by an in situ assay for the detection of beta-galactosidase activity. These results suggest that gamma 2-crystallin sequences between -759 to +45 contain essential information required for appropriate tissue-specific and temporal regulation of the mouse gamma 2-crystallin gene. In a broader context, this study also demonstrates the utility of beta-galactosidase hybrid gene constructs for monitoring the activity of gene regulatory elements in transgenic mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goring, D R -- Rossant, J -- Clapoff, S -- Breitman, M L -- Tsui, L C -- New York, N.Y. -- Science. 1987 Jan 23;235(4787):456-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3099390" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cataract/enzymology ; Crystallins/*genetics ; Galactosidases/*genetics ; Gene Expression Regulation ; *Lac Operon ; Lens, Crystalline/*physiology ; Mice ; Promoter Regions, Genetic ; Recombinant Fusion Proteins/*genetics ; Recombinant Proteins/*genetics ; Tissue Distribution ; Transfection ; beta-Galactosidase/*genetics/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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