制御された形状の3次元上皮質における活性超弾性
Ernest Latorre1,2, Sohan Kale2, Laura Casares1
1Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute for Science and Technology (BIST), Barcelona, Spain.
Nature
|November 8, 2018
まとめ
表面膜は活性な超弾性物質として作用し,極端な伸縮時にユニークな張力高原を示します. 細胞レベルの不安定性によって引き起こされる この行動は 組織が重要な変形に耐えるようにします
科学分野:
- バイオ物理学
- 細胞生物学
- 材料科学
背景:
- エピテリアシートは 生物学的システムにおいて不可欠な曲線構造を形成します
- これらの組織が 圧力下でどのように 変形し 整合性を保つのかを理解することは 極めて重要です
研究 の 目的:
- 成長と変形中の上皮板の機械的性質を調査する.
- 組織の超弾性性の基礎となる細胞メカニズムを解明する.
主な方法:
- 制御された幾何学を持つ上皮ドーム配列の製造.
- エピテリアの緊張と光の圧力の測定
- 組織力学の理論モデル化
主要な成果:
- エピテリアシートは,大きな面積の株の上に"張力高原"を示し,活性な超弾性物質として振る舞います.
- 細胞レベルの菌株は高度に異質であり,均一な組織緊張と対照的です.
- ストレッチ誘発によるアクチン皮質の稀縮と中間フィラメントの回復が この超弾性性を引き起こす.
結論:
- 皮質シートには 超弾力性があり これは新しい機械的振る舞いです
- この特性により 組織は 絶え間ない緊張を保ちながら 極端な伸縮に耐えられるのです
- 発見は組織形態変異と適応のための新しいメカニズムを明らかにします.
関連する概念動画
VSEPR Theory and the Basic Shapes
84.9K
Overview of VSEPR Theory
84.9K
Molecular Shape and Polarity
75.7K
Dipole Moment of a Molecule
75.7K
Molecular Shapes
62.0K
Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...
Two regions of electron density in a diatomic...
62.0K
First Derivatives and the Shape of a Graph
79
In calculus, the concept of the first derivative plays a crucial role in understanding the behavior of a function over its domain. The first derivative, denoted as f’(x), provides insight into how a function changes at any given point, much like a cyclist adjusting speed along a winding trail. By analyzing the first derivative, mathematicians can determine where a function is increasing, decreasing, or reaching critical points.The first derivative provides a precise method for classifying...
79
Second Derivatives and the Shape of a Graph
102
The second derivative of a function provides essential information about a graph's curvature and how it changes over an interval. It helps determine whether a function is concave upward or concave downward and identifies points where the curvature changes. These properties are fundamental in analyzing real-world scenarios, such as changes in road elevation, population growth, and economic trends.A function f(x) is considered concave upward on an interval if its graph lies above all its tangent...
102
Dimensional Analysis
64.5K
Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...
Conversion Factors and Dimensional Analysis
The unit...
64.5K


