Video Experimental Relacionado
Updated: Jun 17, 2026
12:17
Initiating Differentiation in Immortalized Multipotent Otic Progenitor Cells
Published on: January 2, 2016
8.5K
Decodificación de la identidad transcripcional en el desarrollo de las neuronas sensoriales humanas y el modelado de
Tian Lu1, Mengdi Wang1, Wei Zhou2
1State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Cell
|November 13, 2024
Resumen
Este estudio traza el desarrollo de los ganglios de la raíz dorsal (DRG) del embrión humano, revelando los tipos de células y las vías de señalización. Identifica un nuevo subtipo de nociceptor y crea organoides DRG funcionales.
Área de la Ciencia:
- La neurociencia
- Biología del desarrollo
- La genómica
Sus antecedentes:
- Los ganglios de la raíz dorsal (DRG) son vitales para el procesamiento sensorial y su desarrollo es crucial.
- La comprensión del desarrollo de DRG informa la investigación del sistema sensorial.
Objetivo del estudio:
- Para crear un atlas transcriptómico espacio-temporal de una sola célula de DRGs embrionarios humanos.
- Aclarar las vías de señalización y las jerarquías regulatorias que rigen el desarrollo de DRG y las decisiones sobre el destino celular.
- Identificar nuevos subtipos de neuronas sensoriales específicas para el hombre y desarrollar organoides funcionales de DRG.
Principales métodos:
- Análisis transcriptómico espacio-temporal de células únicas de GDR de embriones humanos.
- Análisis bioinformático para identificar tipos de células, cascadas de señalización y redes reguladoras.
- Desarrollo de organoides de DRG humanos mediante la imitación de las vías de señalización in vivo.
Principales resultados:
- Construcción de un atlas completo de DRG embrionario humano, detallando la diversidad celular.
- Identificación de los factores extrínsecos e intrínsecos que guían el destino de las células neuronales y gliales.
- Descubrimiento de un subtipo de nociceptor NTRK3 + / DCC + enriquecido en humanos involucrado en el procesamiento del dolor.
- Generación exitosa de organoides DRG humanos funcionales.
- Elucidación de los reguladores transcripcionales críticos para el compromiso del destino de las neuronas sensoriales no especializadas (uSN).
Conclusiones:
- El estudio proporciona un mapa detallado del desarrollo de la DRG humana, destacando los mecanismos moleculares clave.
- Revela nuevos conocimientos sobre la diversidad de las neuronas somatosensoriales y los subtipos de nociceptores humanos.
- Los organoides DRG desarrollados ofrecen una plataforma para estudiar el desarrollo y la función de las neuronas sensoriales humanas.
Palabras clave:
DRG orgánicoSequencia de pescadoComparación entre especiesganglios de la raíz dorsal humanaonda de neurogénesisel nociceptorneuronas sensorialesvía de señalizacióntranscriptoma espacial de una sola célulaFactores de transcripciónMás Videos Relacionados
10:53Generation of Human Neurons and Oligodendrocytes from Pluripotent Stem Cells for Modeling Neuron-Oligodendrocyte Interactions
Published on: November 9, 2020
4.7K
14:192D and 3D Human Induced Pluripotent Stem Cell-Based Models to Dissect Primary Cilium Involvement during Neocortical Development
Published on: March 25, 2022
3.8K
Videos de Conceptos Relacionados
01:10Transcription
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
01:51Determination
During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In contrast, determination...
02:23Master Transcription Regulators
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
01:17Transcription
Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
01:30General Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
00:57Cellular Differentiation
How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...
A zygote is a...