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Attenuation of fibroblast growth factor signaling by poly-N- acetyllactosamine type glycans

  • Kazuhiro Sugihara
  • , Toshiaki K. Shibata
  • , Kayoko Takata
  • , Takako Kimura
  • , Naohiro Kanayama
  • , Roy Williams
  • , Shingo Hatakeyama
  • , Tomoya O. Akama
  • , Chu Wei Kuo
  • , Kay Hooi Khoo
  • , Michiko N. Fukuda

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

抄録

Fibroblast growth factors (FGFs) and their receptors are expressed in a variety of mammalian tissues, playing a role in development and cell proliferation. While analyzing human sperm motility, we found that sperm treated with endo-β-galactosidase (EBG), which specifically hydrolyzes poly-N-acetyllactosamine type glycans (polyLacs), enhanced motility. Mass spectrometry analysis revealed that sperm-associated polyLacs are heavily fucosylated, consistent with Lewis Y antigen. Immunohistochemistry of epididymis using an anti-Lewis Y antibody before and after EBG treatment suggested that polyLacs carrying the Lewis Y epitope are synthesized in epididymal epithelia and secreted to seminal fluid. EBG-treated sperm elevated cAMP levels and calcium influx, indicating activation of fibroblast growth factor signaling. Seminal fluid polyLacs bound to FGFs in vitro, and impaired FGF-mediated signaling in HEK293T cells.

本文言語英語
ページ(範囲)3195-3201
ページ数7
ジャーナルFEBS Letters
巻587
号19
DOI
出版ステータス出版済み - 01-10-2013
外部発表はい

All Science Journal Classification (ASJC) codes

  • 生物理学
  • 構造生物学
  • 生化学
  • 分子生物学
  • 遺伝学
  • 細胞生物学

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