すべての中間フィラメントのクラスは,モノクローナル抗体によって定義される共通の抗原決定因子を共有しています
Cell
|December 1, 1981
まとめ
新しいモノクローナル抗体は,膠質線,神経線,筋肉Z線を含む,すべての中間フィラメントクラスを認識する. これは,様々な中間線維タンパク質に共通する抗原決定因子を示唆している.
科学分野:
- 細胞生物学 細胞生物学
- 免疫学 免疫学とは
- タンパク質化学 タンパク質化学
背景:
- 中間フィラメントは,様々な細胞タイプに見られる細胞骨格タンパク質の多様なクラスです.
- 以前の研究で,異なる組織や生物の異なる中間線維タンパク質が特定されていた.
- すべての中間フィラメントクラスの普遍的な抗体が欠けていた.
研究 の 目的:
- 中間フィラメントタンパク質の幅広いスペクトルを認識できるモノクローナル抗体を開発する.
- 異なる中間線維タンパク質の間で共通の抗原決定因子の存在を調査する.
- すべての中間フィラメントに共通する分子成分の潜在的存在を探求する.
主な方法:
- 新しいモノクローナル抗体の生産と特徴付け.
- 免疫光検査は,様々な細胞タイプ (アストロサイト,ニューロン,上皮細胞,線維芽細胞) と骨格筋を対象としています.
- SDS-ポリアクリラミドゲル電泳 (SDS-PAGE) でタンパク質結合を分析する.
- 脊椎動物および無脊椎動物の既知の中間線維タンパク質に対する抗体の反応性をテストする.
主要な成果:
- モノクローナル抗体は,グリアルフィラメント,神経フィラメント,トノフィラメント,および線維芽細胞の中間フィラメントを含む,試験されたすべての中間フィラメントクラスとの反応性を示した.
- 抗体結合は,骨格筋のZ線で観察されました.
- 抗体は,グリア線維酸性タンパク質,神経線維三重体,ヴィメンチン,デスミン,およびサイトケラチンなどの主要な中間線維タンパク質を認識した.
- また,イカやミキシコロラから得られた無脊椎動物の中間線維タンパク質と結合している.
- 約6万6千個の分子量を持つタンパク質が,潜在的な共通成分として特定されました.
結論:
- すべての脊椎動物および無脊椎動物の中間線維タンパク質は,共通の抗原決定因子を共有している可能性が高い.
- この発見は,すべての中間線維タンパク質に存在する保存された構造的特徴またはエピトープを強く示唆しています.
- 分子量6万6千個のタンパク質は,種を超えた中間フィラメントの至る所に存在する成分である可能性があります.
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