胎児のヘモグロビン誘導のためのWIZ転写因子の分子接着剤
Pamela Y Ting1, Sneha Borikar1, John Ryan Kerrigan1
1Novartis Biomedical Research, Cambridge, MA, USA.
まとめ
研究者達は,WIZタンパク質を分解する新しい分子接着剤,dWIZ-1とdWIZ-2を発見しました. この分解は,赤血球細胞における胎児のヘモグロビン (HbF) を効果的に誘導し,状細胞病 (SCD) の新しい有望な治療戦略を提供します.
科学分野:
- 遺伝学 と 分子 生物学
- 血液学
- 薬物の発見
背景:
- シクル細胞病 (Sickle cell disease,SCD) は,β-ヘモグロビン変異によって引き起こされる重症な遺伝性血液疾患である.
- 胎児のヘモグロビン (HbF) を誘導することは,SCDの合併症を管理するための治療目標です.
- 既存の小分子HbF誘発剤は安全性と有効性が不足しています.
研究 の 目的:
- 状細胞疾患の新たな治療戦略を特定する.
- 胎児のヘモグロビン (HbF) を安全かつ効果的に誘導できる小分子を発見する.
主な方法:
- セレブロン (CRBN) バイアスの化学図書館のフェノタイプのスクリーニング.
- dWIZ-1とdWIZ-2の分子分解剤の発見と特徴付け
- 三重複合体の結晶分析
- ヒト化されたマウスとシノモルグスの猿での in vivo 研究
主要な成果:
- dWIZ-1とdWIZ-2は,WIZ転写因子の分子接着剤として識別された.
- WIZは胎児のヘモグロビン (HbF) 発現を抑制する新薬であることが明らかになった.
- WIZの分解は赤芽細胞でHbFを強烈に誘導した.
- 薬理学的なWIZの分解は,臨床前モデルではよく許容され,有効でした.
結論:
- WIZの分解は,状細胞疾患の新しく効果的な治療戦略です.
- dWIZ-1とdWIZ-2は,安全で効果的なHbF誘導体としての可能性を示しています.
- このアプローチはSCDの治療方法として 世界的に利用可能になります
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