Video Experimental Relacionado

Updated: Jan 24, 2026

An Orbital Shaking Culture of Mammalian Cells in O-shaped Vessels to Produce Uniform Aggregates

An Orbital Shaking Culture of Mammalian Cells in O-shaped Vessels to Produce Uniform Aggregates

Published on: January 7, 2019

Diferentes modos de competencia celular dan forma a la morfogénesis del tejido de los mamíferos

Stephanie J Ellis¹, Nicholas C Gomez¹, John Levorse¹

¹Howard Hughes Medical Institute, Robin Neustein Laboratory of Mammalian Cell Biology and Development, The Rockefeller University, New York, NY, USA.

|May 17, 2019

Resumen

La competencia celular optimiza el desarrollo de los tejidos al eliminar las células menos aptas. En la piel del ratón, este proceso pasa de la absorción a la expulsión a medida que el tejido se estratifica, asegurando la formación de una barrera adecuada.

Área de la Ciencia:

Biología del desarrollo
Biología celular
Biología evolutiva

Sus antecedentes:

La competencia celular, la eliminación de las células "perdedoras" por las células "ganadoras", se observó por primera vez en Drosophila.
Su generalidad evolutiva y su papel en el desarrollo de los vertebrados no se comprenden completamente.

Objetivo del estudio:

Investigar los mecanismos de competencia celular durante el desarrollo de la piel del ratón.
Determinar si la competencia celular optimiza la arquitectura y la función del tejido en los vertebrados.

Principales métodos:

Imágenes en vivo
El rastreo del linaje
Transcriptómica de una sola célula
La genética

Principales resultados:

Identificaron dos mecanismos secuenciales de competencia celular en el desarrollo de la piel del ratón.
La epidermis temprana: los progenitores ganadores engullen las células perdedoras.
Estratificación de la epidermis: la capa basal expulsa a los perdedores a través de la descendencia diferenciadora.
La perturbación de este interruptor perjudica la formación de la barrera cutánea.

Conclusiones:

La competencia celular es una fuerza selectiva conservada que optimiza la función del tejido de los vertebrados.
Los tejidos ajustan dinámicamente las estrategias de competencia celular durante la morfogénesis para mantener la aptitud.

Más Videos Relacionados

Measurement of Chladni Mode Shapes with an Optical Lever Method

Measurement of Chladni Mode Shapes with an Optical Lever Method

Published on: June 5, 2020

Laser Capture Microdissection of Mammalian Tissue

Laser Capture Microdissection of Mammalian Tissue

Published on: October 1, 2007

Videos de Conceptos Relacionados

Competition

Competition

When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.

Morphogenesis

Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.

What is a Mode?

What is a Mode?

The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...

Molecular Shape and Polarity

Molecular Shape and Polarity

Dipole Moment of a Molecule

VSEPR Theory and the Basic Shapes

VSEPR Theory and the Basic Shapes

Overview of VSEPR Theory