Video Experimental Relacionado

Updated: Feb 15, 2026

Single-cell RNA-Seq of Defined Subsets of Retinal Ganglion Cells

Single-cell RNA-Seq of Defined Subsets of Retinal Ganglion Cells

Published on: May 22, 2017

Definición del primer paso de la segregación del linaje cardiovascular por secuencia de ARN de una sola célula

Fabienne Lescroart¹, Xiaonan Wang^2,3, Xionghui Lin¹

¹Université Libre de Bruxelles, Laboratory of Stem Cells and Cancer, Brussels B-1070, Belgium.

Science (New York, N.Y.)

|January 27, 2018

Resumen

Mesp1 es crucial para el desarrollo del progenitor cardiovascular (PC) en ratones, regulando su transición de células pluripotentes a linajes cardíacos especializados. Este estudio revela que Mesp1

Área de la Ciencia:

Biología del desarrollo
Investigación cardiovascular
La genética

Sus antecedentes:

El desarrollo del corazón del ratón se origina en los progenitores cardiovasculares (PC) que expresan Mesp1 especificados durante la gastrulación.
Los mecanismos moleculares que rigen la segregación regional y de linaje temprana de CPs siguen siendo incompletamente entendidos.

Objetivo del estudio:

Aclarar los procesos moleculares que controlan la segregación regional y de linaje temprana de los progenitores cardiovasculares.
Investigar el papel de Mesp1 en la especificación y diferenciación de las células cardíacas.

Principales métodos:

Se realizó secuenciación de ARN unicelular (scRNA-seq) en PC de tipo salvaje y sin Mesp1 en ratones.
El análisis del transcriptoma se utilizó para comparar los perfiles de expresión génica entre las poblaciones de PC dependientes de Mesp1 y las independientes.

Principales resultados:

Las PC de Mesp1 exhiben heterogeneidad molecular y existen en un continuo desde el epiblasto hasta los progenitores mesodérmicos y hematopoyéticos.
Mesp1 es esencial para salir del estado pluripotente e iniciar el programa de expresión génica cardiovascular.
Se identificaron distintas poblaciones de PC de Mesp1, correspondientes a progenitores comprometidos con linajes y regiones cardíacas específicas.

Conclusiones:

Mesp1 juega un papel crítico en la salida temprana de la pluripotencia y la inducción de las vías de desarrollo cardíaco.
Este estudio identifica características moleculares relacionadas con la restricción temprana del linaje y la segregación regional de progenitores cardíacos durante la gastrulación del ratón.
Los hallazgos proporcionan información sobre la base molecular de la regionalización temprana del corazón y la asignación del linaje.

Más Videos Relacionados

Nuclei Isolation from Fresh Frozen Brain Tumors for Single-Nucleus RNA-seq and ATAC-seq

Nuclei Isolation from Fresh Frozen Brain Tumors for Single-Nucleus RNA-seq and ATAC-seq

Published on: August 25, 2020

Identification of Footprints of RNA:Protein Complexes via RNA Immunoprecipitation in Tandem Followed by Sequencing RIPiT-Seq

Identification of Footprints of RNA:Protein Complexes via RNA Immunoprecipitation in Tandem Followed by Sequencing RIPiT-Seq

Published on: July 10, 2019

Videos de Conceptos Relacionados

RNA-seq

RNA-seq

RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...

Law of Segregation

Law of Segregation

When crossing pea plants, Mendel noticed that one of the parental traits would sometimes disappear in the first generation of offspring, called the F1 generation, and could reappear in the next generation (F2). He concluded that one of the traits must be dominant over the other, thereby causing masking of one trait in the F1 generation. When he crossed the F1 plants, he found that 75% of the offspring in the F2 generation had the dominant phenotype, while 25% had the recessive phenotype.

Segregation in Fresh Concrete

Segregation in Fresh Concrete

Segregation in fresh concrete is a phenomenon where the components of the concrete mix separate, leading to uneven distribution and compromised structural integrity. This separation typically occurs when concrete is subjected to excessive horizontal movement within forms, or when it is dropped from considerable heights or forced through narrow, winding paths. As a result, heavier coarse aggregate particles settle at the bottom, while lighter, finer materials such as cement and water rise to the...

Lineage Commitment

Lineage Commitment

Commitment is the process whereby stem cells:

Overview of the Cardiovascular System

Overview of the Cardiovascular System

The cardiovascular system is a vital transportation system in the body. It comprises the heart and blood vessels and facilitates the exchange of gases, nutrients, and waste products.
Heart
The heart is the central pump of the cardiovascular system that circulates blood throughout the body. It comprises two atria receiving the blood and two ventricles pumping blood out of the heart. Their rhythmic contractions, called heartbeats, ensure that blood flow remains continuous.
Blood Vessels
Blood...

RNA Structure

RNA Structure

Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...