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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