IFNγ依存の組織免疫ホメオスタシスは,腫瘍の微小環境で併用される
Christopher J Nirschl1, Mayte Suárez-Fariñas2, Benjamin Izar3
1Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Cell
|July 1, 2017
まとめ
免疫細胞はインターフェロン・ガンマ (IFNγ) によって誘発された同位体プログラムを共有し,腫瘍によって併用されます. SOCS2を含むこのプログラムは,抗腫瘍免疫を制限し,患者の生存に影響します.
科学分野:
- 免疫学
- 癌 生物学
- 細胞ホメオスタシス
背景:
- 免疫ホメオスタシスは保護と自己耐性のバランスを保ち,自己免疫と腫瘍形成に影響を与えます.
- ホメオスタシスを維持するメカニズムと腫瘍の監視への影響はほとんど不明である.
研究 の 目的:
- 免疫ホメオスタシスがどのように維持され,それが腫瘍の監視にどのように影響するかを調査する.
- 腫瘍の微小環境内の免疫ホメオスタシスに関与する重要な分子プレーヤーと経路を特定する.
主な方法:
- ヒトメラノーマの単細胞RNA配列解析 (RNA-seq)
- モノサイトとデンドリット細胞 (DCs) を含む免疫単核ファゴサイトの分析
- インターフェロン・ガンマ (IFNγ) 刺激アッセイと in vivo 研究
主要な成果:
- 免疫単核ファゴサイトにおける保存されたホメオスタティックプログラムは,IFNγによって誘発される.
- メラノーマを含むヒトの原発性腫瘍では,このIFNγ依存プログラムが強化され,生存率と相関しています.
- このプログラムの重要なトランスクリプトであるシトカイン-2抑制剤 (SOCS2) は,抗腫瘍免疫とT細胞のプリミングを制限する.
結論:
- 免疫ホメオスタシスのメカニズムは 腫瘍の微小環境によって取り入れられます
- SOCS2によって媒介されるIFNγ誘発のホメオスタティックプログラムは,抗腫瘍免疫を制限する上で重要な役割を果たします.
- これらの発見は,免疫ホメオスタシスを腫瘍の免疫脱出と結びつけ,潜在的な治療標的を特定します.
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