関連する実験動画
Updated: Oct 12, 2025

06:01
Modulating Shape of Polyester Based Polymersomes using Osmotic Pressure
Published on: April 21, 2021
3.4K
ダイナミック・ガス交換によるポリマー小胞の膜ポリモルフィズムの再構成
Jiannan Zhu1, Zehao Gong1, Cuiqin Yang1
1State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
Journal of the American Chemical Society
|November 23, 2021
まとめ
ポリマーベシクルの形状を制御するためのガス交換方法を開発した. この戦略はポリマーの構造を変化させるために異なるガスを使用し,動的形状制御のための伸縮と突起のような膀の動きを指示します.
科学分野:
- ポリマー化学
- 材料科学
- バイオミミクリ
背景:
- 膀の形状を動的に制御することは,細胞ミミクリにとって極めて重要です.
- 膀形成の既存の方法は普遍性とダイナミックな制御が欠けている.
- ポリマーベシクルは 細胞機能を模倣する多用途のプラットフォームです
研究 の 目的:
- ポリマーベシクルの変形を誘導するための新しいガス交換戦略を提示する.
- 動的ポリマー再構成による 膀形状の制御を証明する.
- 膀の多形性を達成するための一般的方法を確立する.
主な方法:
- CO2結合によるガスベースのダイナミックポリマーを用いたポリマーベシクルの組み立て
- ポリマー構造を改変するために,競合するガス (N2O,SO2,C2H4) を使って,インシットガス交換を行う.
- 膀膜の動き (伸縮,曲,突起) の観察と分析
主要な成果:
- ガスの交換により,ポリマーの形状が動的に変化した.
- 特定のガスとその濃度が精密に制御された 膀の変形
- 制御された膜の動きを通してポリマーソームを再構成する能力を示した.
結論:
- ガス交換は,ポリマー水泡の形態を制御するための実行可能で一般的な戦略です.
- この方法は,膀の進化と幾何学的な変換を正確に制御します.
- この発見は ダイナミックなポリマーシステムと 細胞模倣の分野を発展させました
関連する概念動画
Membrane Fluidity
160.9K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
160.9K
Mechanisms of Membrane-bending
2.9K
The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
2.9K
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
2.8K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
2.8K
Enlargement of the Plasma Membrane
2.0K
Cell division and enlargement are processes that require precise control. The control ensures that cell division cannot proceed unless the cell has grown to a specific size. A spherical, dividing cell requires an approximately 1.6X increase in its surface area to double its volume. The secretory pathway also has a significant role in cell membrane enlargement. Secretory vesicles that bud off from the Golgi apparatus and later fuse with the plasma membrane during exocytosis are a major source of...
2.0K

