Integrin β-4 signaling plays a key role in mouse embryogenesis Journal Article
| Authors: | Roberts, J. E.; Nikolopoulos, S. N.; Oktem, O.; Giancotti, F.; Oktay, K. |
| Article Title: | Integrin β-4 signaling plays a key role in mouse embryogenesis |
| Abstract: | Integrins, by signaling between extracellular matrix and cell nucleus, serve critical roles in cell proliferation and survival. A knock-in mice was developed by a targeted deletion of the C-terminal segment of the cytoplasmic tail of β4-integrin (β4-1355T). The β4-1355T mice had a longer gestational length, smaller litter sizes, lower fecundity rate, and higher frequency of early pregnancy loss. β4-1355T embryos demonstrated a high degree of fragmentation and asymmetry, with fewer surviving to either a morula or blastocyst stage. In wild-type oocytes and embryos, β1, β4, and laminin-5 signals colocalized at the opposing surfaces of blastomeres and between the polar bodies and oocytes. Blastomeres within the β4-1355T embryos were less cohesive, with a more diffuse expression of β4 and laminin-5 compared with wild type. The α6β4-laminin-5 interaction appears to be vital for maintaining the cohesiveness between the cells of the embryo. Deciphering the role of integrins such as β4 in embryogenesis may help explain in vitro fertilization failures. © 2009 by the Society for Gynecologic Investigation. |
| Keywords: | immunohistochemistry; signal transduction; controlled study; protein expression; mutation; nonhuman; mouse; oocyte; animals; mice; animal experiment; embryo development; mice, transgenic; embryo, mammalian; pregnancy; gene knock-in techniques; fertilization in vitro; fertility; embryonic development; embryo culture techniques; blastocyst; oocyte retrieval; ovulation induction; β4-integrin; embryogenesis; implantation; knock-in; reproduction; beta4 integrin; blastomere; cleavage stage, ovum; embryo implantation; integrin beta4; litter size |
| Journal Title: | Reproductive Sciences |
| Volume: | 16 |
| Issue: | 3 |
| ISSN: | 1933-7191 |
| Publisher: | Sage Publications |
| Date Published: | 2009-03-01 |
| Start Page: | 286 |
| End Page: | 293 |
| Language: | English |
| DOI: | 10.1177/1933719108325506 |
| PUBMED: | 19087978 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | --- - "Cited By (since 1996): 3" - "Export Date: 30 November 2010" - "Source: Scopus" |
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