Normal embryonic and germ cell development in mice lacking α1,3-fucosyltransferase IX (Fut9) which show disappearance of stage-specific embryonic antigen 1

Takashi Kudo, Mika Kaneko, Hiroko Iwasaki, Akira Togayachi, Shoko Nishihara, Kuniya Abe, Hisashi Narimatsu

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Stage-specific embryonic antigen 1 (SSEA-1), an antigenic epitope defined as a Lewis x carbohydrate structure, is expressed during the 8-cell to blastocyst stages in mouse embryos and in primordial germ cells, undifferentiated embryonic stem cells, and embryonic carcinoma cells. For many years, SSEA-1 has been implicated in the development of mouse embryos as a functional carbohydrate epitope in cell-to-cell interaction during morula compaction. In a previous study, α1,3-fucosyltransferase IX (Fut9) exhibited very strong activity for the synthesis of Lewis x compared to other α1,3-fucosyltransferases in an in vitro substrate specificity assay. Fut4 and Fut9 transcripts were expressed in mouse embryos. The Fut9 transcript was detected in embryonic-day-13.5 gonads containing primordial germ cells, but the Fut4 transcript was not. In order to identify the role of SSEA-1 and determine the key enzyme for SSEA-1 synthesis in vivo, we have generated Fut9-deficient (Fut9-/-) mice. Fut9-/- mice develop normally, with no gross phenotypic abnormalities, and are fertile. Immunohistochemical analysis revealed an absence of SSEA-1 expression in early embryos and primordial germ cells of Fut9-/- mice. Therefore, we conclude that expression of the SSEA-1 epitope in the developing mouse embryo is not essential for embryogenesis in vivo.

Original languageEnglish
Pages (from-to)4221-4228
Number of pages8
JournalMolecular and cellular biology
Volume24
Issue number10
DOIs
Publication statusPublished - 2004 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology

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