动素模板结构:大自然对层次的表面模式的方法 (甲虫的Setae作为案例研究)
Jennifer Y Kasper1, Matthias W Laschke2, Marcus Koch1
1INM-Leibniz Institute for New Materials, Campus D2 2, 66123, Saarbruecken, Germany.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 25, 2023
概括
研究人员研究了子脚的发育,以了解这些天然粘合剂是如何再生的. 这项研究可能会激发自我更新的生物灵感粘合剂,克服当前合成材料的局限性.
科学领域:
- 生物模拟学是一种生物模拟学.
- 材料科学 材料科学 材料科学
- 发展生物学 发展生物学
背景情况:
- 盖可脚具有层次的微型/纳米结构,可实现可逆粘附.
- 合成鼠灵感的粘合剂显示出高性能,但缺乏自我更新和耐用性.
- 了解座座的形态发生是生物工程自愈粘合剂的关键.
研究的目的:
- 调查斑刺的发育过程 (形态发生).
- 确定驱动形和等级结构的关键分子和细胞机制.
- 探索生物工程的潜力,以自然再生为灵感的自我更新的粘合面.
主要方法:
- 研究了比布朗 (Chondrodactylus bibronii) 的皮肤样本.
- 分析了F-actin,微管,角质蛋白和角质β蛋白在发育中的作用.
- 研究了单细胞起源的的细胞结构和生长模式.
主要成果:
- 甲座的形状在表皮细胞-细胞接口处发展为专门的尖端结构.
- F-actin和微管是层次形态学的关键模板元素.
- 角质蛋白和角质β蛋白稳定了正在发展的状结构.
- 细菌起源于单细胞,并扩展到周围的多个细胞中.
- 多细胞结点可能会在脱落过程中促进的脱落.
结论:
- 甲座的形态发生涉及特定的细胞骨和蛋白质作用,用于层次结构.
- 独特的多细胞生长模式可能有助于脱落和再生.
- 这些发现为自然再生机制提供了洞察力,并激发了生物工程自再生粘合剂的灵感.
相关概念视频
01:31Mechanism of Lamellipodia Formation
2.6K
Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
2.6K
01:39Mechanism of Filopodia Formation
2.3K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
2.3K
01:09Cell Migration
17.0K
Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
17.0K
01:13Actin Polymerization and Cell Motility
5.3K
Actin is a family of globular proteins that are highly abundant in eukaryotic cells. It makes up approximately 1-5% of total cell protein concentration. Actin monomers polymerize to form a complex network of polarized filaments, the actin cytoskeleton, that plays a crucial role in many cellular processes, including cell motility, division, endocytosis, and metastasis of cancer cells.
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
5.3K
01:18Actin Treadmilling
8.1K
Actin filaments undergo polymerization and depolymerization from either end. The polymerization and depolymerization rates depend on the cytosolic concentration of free G-actins. The polymerization rate is generally higher at the plus or barbed end, while the depolymerization rate is higher at the minus or pointed end. At a steady state, critical concentration describes the concentration of free G-actin monomers at which the polymerization rate at the plus end is equal to that of the...
8.1K
01:28Types of Membrane Protrusions
2.9K
The protrusion of the cell surface is an initial step for several cellular processes, including cell migration, phagocytosis, and neurite outgrowth. These membrane protrusions are a result of cytoskeletal rearrangement. The most widely observed cell protrusions include lamellipodia, pseudopodia, filopodia, microvilli, invadopodia, and podosomes. These protrusions can be of two types — static or dynamic.
The microvilli, an example of stable protrusions, are finger-like projections...
The microvilli, an example of stable protrusions, are finger-like projections...
2.9K