成長因子プログランウリンはTNF受容体と結合し,マウスの炎症性関節炎に対する治療効果があります
Wei Tang1, Yi Lu, Qing-Yun Tian
1Department of Orthopaedic Surgery, New York University School of Medicine and NYU Hospital for Joint Diseases, New York, NY 10003, USA.
Science (New York, N.Y.)
|March 12, 2011
まとめ
プログランウリン (PGRN) は腫瘍死滅因子受容体 (TNFRs) に結合し,TNFαシグナル伝達に対するアンタゴニストとして作用する. この発見は,関節炎のような炎症性疾患に対する新しい治療の機会を提供します.
科学分野:
- 免疫学 免疫学とは
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
背景:
- プログランウリン (PGRN) は,成長,修復,炎症に関与する成長因子です.
- PGRNの特定の受容体は未だに特定されていない.
- 腫瘍死滅因子α (TNFα) 信号伝達は,炎症性疾患における重要な経路である.
研究 の 目的:
- プログランウリン (PGRN) の受容体を特定する.
- 炎症性関節炎におけるPGRNの役割を調査する.
- TNFα媒介性疾患の潜在的な治療薬として,PGRNとその派生体を調査する.
主な方法:
- 腫瘍死滅因子受容体 (TNFRs) に対するPGRN結合を評価するための生化学分析.
- PGRN欠乏したマウスを用いて,コラーゲン誘発性関節炎に対する感受性を評価する研究.
- PGRNとPGRN由来タンパク質 (Atsttrin) を炎症性関節炎のマウスモデルに投与する.
- TNFαで活性化された細胞内信号伝達経路の分析.
主要な成果:
- プログランウリン (PGRN) は,腫瘍死滅因子受容体 (TNFRs) に直接結合し,TNFα-TNFRの相互作用を妨げます.
- PGRN欠乏したマウスは,コラーゲン誘発性関節炎に対する感受性の増加を示した.
- PGRNとAtsttrinの投与は,関節炎モデルにおける炎症を改善しました.
- PGRNとAtsttrinは,TNFαによって活性化された細胞内信号伝達を阻害した.
結論:
- プログランウリン (PGRN) は,TNFRのリガンドとして機能し,TNFαシグナル伝達のアンタゴニストである.
- PGRNはマウスの炎症性関節炎の病原性において重要な役割を果たしています.
- PGRNおよびそのエンジニアリングされた変種は,リウマチ性関節炎を含むTNFα関連の炎症性疾患の有望な治療候補である.
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