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人間におけるバイアレルRIPK1変異は,重度の免疫不全,関節炎,腸炎を引き起こす

Delphine Cuchet-Lourenço¹, Davide Eletto¹, Changxin Wu¹

¹Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK.

Science (New York, N.Y.)

|July 21, 2018

まとめ

受容体と相互作用するセリン/スレオニンキナーゼ1 (RIPK1) 欠乏症は,感染症や炎症を含む重度の免疫障害を引き起こす. RIPK1は人間の健康な免疫系にとって不可欠であり,薬物の標的としての可能性を強調しています.

科学分野:

免疫学
分子生物学
遺伝学

背景:

受容体と相互作用するセリン/スレオニンキナーゼ1 (RIPK1) は,炎症と細胞死シグナル伝達経路の重要なレギュラーである.
RIPK1は,様々な疾患の潜在的な治療標的として認識されています.

研究の目的:

人間における完全RIPK1欠乏症の臨床的および免疫学的結果を調査する.
人間の免疫系における RIPK1 の役割を解明する.

主な方法:

ホモジゴスRIPK1変異を有する3つの家族から4人の患者を対象とした臨床ケース研究.
血液中のサイトカインの測定とインビトロ細胞分析を含む免疫学的評価.
造血幹細胞移植後の治療効果の評価

主要な成果:

患者は再発性感染症,早期発症性炎症性腸疾患,多関節炎を発症しました.
リンパ欠乏症と変異したサイトカインの産生による免疫不全.
RIPK1欠乏細胞は信号伝達経路 (MAPK) の障害と死滅への感受性の増加を示した.
血液形成幹細胞移植は,ある患者の免疫機能と臨床結果を改善した.

結論:

完全なRIPK1欠乏症は,重度の結合免疫欠乏症と自己炎症状態につながる.
RIPK1は正常な免疫細胞機能,サイトカイン調節,細胞死経路に不可欠です.
RIPK1をターゲットにすることで,免疫関連の疾患の治療戦略を提供することができる.

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