化学 的 に 反応 する 合成 細胞 の 膜 組立,形状 変化,組織 形成
Youngjun Lee1, Alessandro Fracassi1, Neal K Devaraj1
1Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.
Journal of the American Chemical Society
|November 14, 2023
まとめ
研究者は光に反応する脂質を使って ダイナミックな合成細胞を開発しました これらの人工細胞は 複雑な組織に組み合わされ 生物学的機能を模倣し 生命の進化の初期に 洞察力を与えます
科学分野:
- バイオミメティック化学
- 合成生物学
- 材料科学
背景:
- 制御された組み立てのダイナミクスを通して 複雑な組織を現しています
- 重要な質問は 合成細胞が 均衡状態から外れた状態で 似たような複雑性を 達成できるかどうかです
- 機能的な人工生命を作るには エネルギー駆動の組み立てを理解することが重要です
研究 の 目的:
- 複雑な自己組織化機能を持つ ダイナミックな合成細胞を設計する
- 合成細胞の行動を制御する外部刺激 (光,化学物質) の役割を調査する.
- 活気のある細胞から 機能的な合成組織を作り出す可能性を 探求すること
主な方法:
- 光や化学反応に反応する人工脂質を用いた合成細胞の組み立て
- 光照射を用いて 膀の形成と構造の再構築を誘導する
- 多価ポリマーを組み込み 膀のクロスリンクと組織形成を誘発する
主要な成果:
- 乱れた脂質の集積は 放射線を浴びた時に自発的に巨大な細胞状の膀を形成し,光を取り除くと逆転する.
- 再構成された合成細胞膜は 構成要素と相互作用し 結合を防ぎ 膜の組成を変えました
- 光による形状の変化 (球から棒) はエネルギーに依存する生物学的機能を模倣した.
- 脂質集積から機能的な合成組織を形成する"ワンポットプロセス"が達成された.
結論:
- ダイナミックな合成細胞は 複雑でエネルギーに依存した行動を示すように設計できます
- 光と化学的刺激は 合成細胞を階層構造に組み立てるための 精密な制御を提供します
- このシステムは 初期プロトセルが 協調的な組み立てのために エネルギーを活用した方法を 理解するためのモデルを提供します
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