Mecanismos de expansión de la piel mediada por estiramiento a resolución de una sola célula

Mariaceleste Aragona1, Alejandro Sifrim2,3, Milan Malfait1

  • 1Laboratory of Stem Cells and Cancer, Université Libre de Bruxelles, Brussels, Belgium.

Nature
|July 31, 2020
PubMed
Resumen

El estiramiento de la piel para la cirugía reconstructiva se entiende, pero los mecanismos in vivo siguen sin estar claros. Este estudio revela cómo las fuerzas mecánicas en la piel del ratón desencadenan la expansión al influir en la renovación y diferenciación de las células madre epidérmicas.

Videos de Conceptos Relacionados

Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
3.3K
Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
3.3K
Elastin is Responsible for Tissue Elasticity01:12

Elastin is Responsible for Tissue Elasticity

Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. The main property of elastin is that it will return to its original shape after being stretched or compressed. Elastic fibers are prominent in elastic tissues found in skin and the elastic ligaments of the vertebral column.
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
2.9K