関連する実験動画
Updated: Sep 7, 2026

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Investigating Mast Cell Secretory Granules; from Biosynthesis to Exocytosis
Published on: January 26, 2015
マスト細胞は,既成形および免疫学的に誘導可能なTNF-alpha/cachectinの両方の源である
1Department of Pathology, Beth Israel Hospital, Boston, Massachusetts 02215.
Nature
|July 19, 1990
まとめ
マウスマスト細胞は,組織的に腫瘍死滅因子アルファ (TNF-alpha) を生成し,放出する. IgE依存活性化は,この放出を促進し,マスト細胞を宿主防御とアレルギー疾患に関与するTNF-αの主要な源として識別します.
科学分野:
- 免疫学 免疫学とは
- 細胞生物学 細胞生物学
- サイトカイン研究 サイトカイン研究
背景:
- 腫瘍死滅因子α (TNF-α) は,炎症,免疫,代謝に関与する重要なサイトカインです.
- マクロファージは生産者として知られているが,マスト細胞を含む他の細胞タイプもTNF-alpha.を産生する可能性がある.
- 以前の研究では,マスト細胞にTNF-αのような製品が含まれている可能性が示唆されていた.
研究 の 目的:
- マウスマスト細胞におけるTNF-α生物活性の存在と調節を調査する.
- マスト細胞が活性化時にTNF-αを放出するかどうかを判断する.
- マスト細胞をTNF-alpha.の重要な源として特定する.
主な方法:
- 居住マウスおよび培養マウスの腹腔内マスト細胞におけるTNF-α生物活性の分析.
- マスト細胞のIgEに依存した活性化.
- TNF-αメッセンジャーRNA (mRNA) と活性化後の生物活性度の測定.
主要な成果:
- 定住マウスのペリトニアルマスト細胞は,実質的なTNF-α生物活性を含んでいる.
- 培養された未成熟のマスト細胞は,変数のTNF-α含有量を示した.
- IgE依存活性化により,細胞外TNF-alphaが放出され,TNF-alpha mRNAと生物活性が増加しました.
結論:
- ネズミのマスト細胞は,前形および誘導性TNF-alpha.の重要な源である.
- マスト細胞に由来するTNF-αの放出は宿主の防衛機構に役割を果たす可能性がある.
- マスト細胞TNF-αは,アレルギー性疾患の病理生理学および他のTNF-α媒介のプロセスに寄与する.
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