遺伝子組み換えコレステロールポリペプチド
Davoud Mozhdehi1, Kelli M Luginbuhl1, Michael Dzuricky1
1Department of Biomedical Engineering , Duke University , 1427 FCIEMAS , Box 90281, Durham , North Carolina 27708-0281 , United States.
Journal of the American Chemical Society
|January 5, 2019
まとめ
研究者は天然のタンパク質を改造して コレステロール改変ポリペプチド (CHaMP) と呼ばれる新しいバイオマテリアルを作りました これらのCHaMPは自己組織化され 糖尿病薬エクセンディン-4のように 薬物投与の可能性を示しています
科学分野:
- バイオマテリアル科学
- タンパク質工学
- ナノテクノロジー
背景:
- 翻訳後の改変 (PTM) はタンパク質の機能を調節しますが,生物材料設計では十分に活用されていません.
- 自然なPTMである脂化により,新しい生体材料が作られる可能性があります.
- 遺伝子組み換えバイオマテリアルは 限られています
研究 の 目的:
- 自然な脂質化PTMを用いた自己組み立て生物材料の新種を開発する.
- これらのコレステロール改変型ポリペプチド (CHaMP) の生物学的可能性を実証する.
- コレステロールと結合したエクセンジン-4をタイプII糖尿病の治療のために作る.
主な方法:
- エッジホッグ媒介のコレステロール変異タンパク質を用いた.
- プログラム可能な自己アセンブリを持つエンジニアリングされたコレステロール改変ポリペプチド (CHaMPs).
- ペプチドエクセンジン-4に結合したコレステロール
主要な成果:
- CHaMPはナノスケールでプログラム可能な自己アセンブリを示した.
- エクセンジン-4コレステロール結合体はミセルに自己組み立てられます.
- これらのミセルは高効能でグルカゴンのようなペプチド-1受容体を活性化します.
結論:
- タンパク質のコレステロール改変は 自己組織化バイオマテリアルを作るのに有効な戦略です
- CHaMPは先進的な薬物投与システムを開発するための有望なプラットフォームです.
- エクセンディン-4コレステロール結合は,II型糖尿病の有効な治療薬としての可能性を示しています.
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