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ネズミの3つのフタル酸塩の混合によって引き起こされる雄性生殖器損傷のメカニズムのトランスクリプトミックの分析
Ling-Zi Xia1, Jun-Zhe Yue2, Li-Jun Wu1
1Department of Environmental Hygiene and Toxicology, School of Public Health, Wenzhou Medical University, Wenzhou 325035, China.
Toxicology and applied pharmacology
|September 6, 2025
まとめ
オスのネズミの環境フェタル酸 (PE) への曝露は,生殖器の体重を減らし,精子の質を低下させた. トランスクリプトミア分析は,男性生殖毒性における焦点粘着経路を伴う重要な遺伝子発現変化を明らかにした.
科学分野:
- 環境毒性学
- 生殖生物学
- 分子毒理学
背景:
- フェタル酸塩 (PE) は環境汚染物質として広く存在しています.
- 人間がPEsの混合物にさらされるのは避けられない.
- 男性の生殖器の健康に リスクがあると疑われています
研究 の 目的:
- フタラート (MPE) の混合物によって引き起こされる男性生殖器損傷のメカニズムを調査する.
- マスラットの生殖器系と丸の遺伝子発現に対するMPEの影響を分析する.
主な方法:
- オスラットは90日間,低 (L-MPE) と高 (H-MPE) のMPEを口服した.
- 生殖器の体重,血清の男性ホルモンのレベル,精子のパラメータ,そして丸の組織病理学.
- 異なる発現遺伝子 (DEGs) と関連するシグナル伝達経路を特定するために,丸のトランスクリプトミア分析を行った.
主要な成果:
- MPEの曝露により 丸,頭蓋骨,頭蓋骨周りの脂肪が減った.
- 血清の男性ホルモンのレベルが低下し,不正常な精子の割合が増加した.
- 組織病理学的損傷には,精管の縮/空洞化,精巣の剥離,レイディグ細胞増殖,脂質滴の蓄積が含まれていた.
- トランスクリプトミア分析では,L-MPEで100 DEG,H-MPEで10,880 DEGが明らかにされ,主に焦点粘着,PI3K-Akt,AGE-RAGE,アクソン誘導,PPAR,MAPK経路が関与していた.
- パキシリンとビンキュリンは上位調節され,MPE誘発の毒性における焦点粘着の役割を支持しました.
結論:
- MPEの曝露はマウスの生殖に重大な毒性をもたらします.
- 焦点粘着シグナル伝達経路は,MPEによって引き起こされる男性生殖器損傷のメカニズムに関与しています.
- この研究は,フタラート混合物の毒性の基礎にある分子機構の洞察を提供します.
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