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Maintenance of the ES Cell State01:14

Maintenance of the ES Cell State

The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...
Stem Cell Niche01:26

Stem Cell Niche

The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
Embryonic Stem Cells00:57

Embryonic Stem Cells

Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...
Embryonic Stem Cells00:58

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Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
Stem Cell Culture01:17

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Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
Regulation of Hematopoietic Stem Cells01:01

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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...

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Video Experimental Relacionado

Updated: Jul 7, 2026

Differentiation of a Human Neural Stem Cell Line on Three Dimensional Cultures, Analysis of MicroRNA and Putative Target Genes
10:48

Differentiation of a Human Neural Stem Cell Line on Three Dimensional Cultures, Analysis of MicroRNA and Putative Target Genes

Published on: April 12, 2015

ARN pequeños: mantienen las células madre en línea.

Bradford M Stadler1, Hannele Ruohola-Baker

  • 1Department of Biochemistry and Institute for Stem Cell and Regenerative Medicine, University of Washington, 1705 NE Pacific Street, Health Science Building, Room J-587, Seattle, WA 98195, USA.

Cell
|February 26, 2008
PubMed
Resumen

Los pequeños ARN reguladores son clave para mantener la pluripotencia de las células madre. Esta investigación explora la convergencia del silenciamiento del ARN y la biología de las células madre para posibles aplicaciones clínicas.

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Área de la Ciencia:

  • Biología de las células madre Biología de las células madre
  • La interferencia del ARN (RNAi) y la regulación génica.

Sus antecedentes:

  • Las células madre son cruciales para la medicina regenerativa y la biología del desarrollo.
  • Los mecanismos de silenciamiento del ARN, incluidos los pequeños ARN reguladores, juegan un papel vital en los procesos celulares.

Objetivo del estudio:

  • Investigar el papel de los pequeños ARN reguladores en el mantenimiento de la pluripotencia de las células madre.
  • Explorar la intersección entre el silenciamiento del ARN y la investigación con células madre.

Principales métodos:

  • Revisión de la literatura científica más reciente.
  • Análisis de estudios que informan sobre ARN pequeños en las células madre.

Principales resultados:

  • La evidencia sugiere que los pequeños ARN reguladores están involucrados en la pluripotencia de las células madre.
  • La convergencia del silenciamiento del ARN y los campos de células madre es un área de rápido desarrollo.

Conclusiones:

  • Los pequeños ARN reguladores son factores significativos en el mantenimiento de las células madre.
  • Una mayor investigación sobre esta convergencia es prometedora para aplicaciones básicas y clínicas.