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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.
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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...
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Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
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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...
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Modelos de embriones humanos basados en células madre: conocimientos actuales y preguntas abiertas

Margit Rosner1, Stefanie Horer1, Izabella Kiss1

  • 1Institute of Medical Genetics, Center for Pathobiochemistry and Genetics, Medical University of Vienna, Währinger Straße 10, 1090, Vienna, Austria.

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PubMed
Resumen
Este resumen es generado por máquina.

Los modelos de embriones humanos basados en células madre están avanzando en nuestra comprensión del desarrollo temprano y las fallas reproductivas. Estos modelos son prometedores para las pruebas de medicamentos y el modelado de enfermedades en la investigación traslacional.

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Área de la Ciencia:

  • Biología del desarrollo
  • Biología de las células madre
  • Medicina de la reproducción

Sus antecedentes:

  • El desarrollo de modelos de embriones humanos basados en células madre integradas tiene como objetivo recapitular el desarrollo humano temprano.
  • Comprender la embriogénesis temprana es crucial para abordar las fallas y enfermedades reproductivas.

Objetivo del estudio:

  • Revisar los beneficios, las promesas y las limitaciones de los modelos de embriones humanos basados en células madre.
  • Discutir su aplicación en la investigación traslacional y en los campos biomédicos.

Principales métodos:

  • Revisión de la literatura actual sobre modelos de embriones humanos basados en células madre.
  • Análisis de los sistemas modelo integrados y no integrados.

Principales resultados:

  • Los modelos basados en células madre son cada vez más sofisticados para imitar la embriogénesis humana.
  • Estos modelos tienen potencial para el cribado de medicamentos y el modelado de enfermedades.

Conclusiones:

  • Los modelos de embriones humanos están entrando en una nueva fase centrada en aplicaciones científicas específicas.
  • Se necesita un mayor desarrollo para aumentar la fidelidad del modelo y abordar las limitaciones en la investigación traslacional.