Identification and embryonic expression of a new AP-2 transcription factor, AP-2ε

Hao-Ven Wang, Kristina Vaupel, Reinhard Buettner, Anja Katrin Bosserhoff, Markus Moser

研究成果: Article

31 引文 斯高帕斯(Scopus)

摘要

AP-2 proteins comprise a family of highly related transcription factors, which are expressed during mouse embryogenesis in a variety of ectodermal, neuroectodermal, and mesenchymal tissues. AP-2 transcription factors were shown to be involved in morphogenesis of craniofacial, urogenital, neural crest-derived, and placental tissues. By means of a partial cDNA fragment identified during an expressed sequence tag search for AP-2 genes, we identified a fifth, previously unknown AP-2-related gene, AP-Sε. AP-Sε encodes an open reading frame of 434 amino acids, which reveals the typical modular structure of AP-2 transcription factors with highly conserved C-terminal DNA binding and dimerization domains. Although the N-terminally localized activation domain is less homologous, position and identity of amino acids essential for transcriptional transactivation are conserved. Reverse transcriptase-polymerase chain reaction analyses of murine embryos revealed AP-2ε expression from gestational stage embryonic day 7.5 throughout all later embryonic stages until birth. Whole-mount in situ hybridization using a specific AP-2ε cDNA fragment demonstrated that during embryogenesis, expression of AP-2ε is mainly restricted to neural tissue, especially the midbrain, hindbrain, and olfactory bulb. This expression pattern was confirmed by immunohistochemistry with an AP-2ε-specific antiserum. By using this antiserum, we could further localize AP-2ε expression in a hypothalamic nucleus and the neuroepithelium of the vomeronasal organ, suggesting an important function of AP-2ε for the development of the olfactory system.

原文English
頁(從 - 到)128-135
頁數8
期刊Developmental Dynamics
231
發行號1
DOIs
出版狀態Published - 2004 九月 1

All Science Journal Classification (ASJC) codes

  • Developmental Biology

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