Video Experimental Relacionado
Updated: Sep 9, 2025

09:55
In vitro Cell Migration and Invasion Assays
Published on: June 1, 2014
139.0K
Las adherencias dinámicas y atípicas basadas en E-cadherina median la migración de los melanoblastos a través de
bioRxiv : the preprint server for biology
|September 2, 2025
Resumen
Los melanocitos migratorios utilizan la E-cadherina para navegar por la epidermis sin interrumpir la barrera de la piel. Esta molécula de adhesión celular estabiliza las protuberancias, ayuda a la invasión y mantiene la integridad de la piel.
Área de la Ciencia:
- Biología celular
- Biología del desarrollo
- Dermatología
Sus antecedentes:
- Las células accesorias como los melanocitos migran a través de los tejidos epiteliales.
- La comprensión de la migración celular en espacios epiteliales confinados es limitada.
- La función de la barrera epitelial debe mantenerse durante la migración celular.
Objetivo del estudio:
- Para investigar cómo los melanocitos migran a través de la epidermis.
- Para aclarar el papel de las moléculas de adhesión célula-célula en este proceso.
- Comprender cómo se conserva la función de la barrera epitelial durante la invasión celular.
Principales métodos:
- Imágenes en vivo de la epidermis embrionaria de un ratón.
- Visualización de la membrana basal y las superficies epiteliales.
- Análisis de la dinámica y función de la E-cadherina en la migración de los melanocitos.
Principales resultados:
- Los melanoblastos migran a través de las capas epidérmicas basales y suprabasales y los folículos pilosos.
- Los melanocitos utilizan las superficies de los queratinocitos y la membrana del sótano como sustratos migratorios.
- Se forman adherencias atípicas de E-cadherina entre los melanocitos y los queratinocitos.
- La E-cadherina es crucial para estabilizar las protuberancias migratorias en ambos tipos de células.
- El agotamiento de la E-cadherina en los melanocitos reduce la motilidad y causa despigmentación.
Conclusiones:
- Las células migratorias cooptan el mecanismo de adhesión célula-célula epitelial para la invasión.
- La E-cadherina facilita la migración de los melanocitos a través de la epidermis sin comprometer la función de barrera.
- Este mecanismo destaca una nueva forma en que las células navegan por los tejidos epiteliales.
Videos de Conceptos Relacionados
Adherens Junctions
5.0K
Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types – adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
Adherens Junctions are Dynamic
5.0K
Cadherins in Tissue Organization
3.1K
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...
3.1K
Cell Migration
17.2K
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.
17.2K
Anchoring Junctions
3.9K
Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
3.9K
Cancer Cell Migration through Invadopodia
2.4K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.4K
Cytoskeletal Coordination in Cell Migration
4.9K
A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
4.9K

