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Videos de Conceptos Relacionados

Somatic to iPS Cell Reprogramming01:29

Somatic to iPS Cell Reprogramming

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Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012...
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Chromatin Modification in iPS Cells01:32

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Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
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Methods of Nuclear Reprogramming01:24

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Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
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Combinatorial Gene Control02:33

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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
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Induced Pluripotent Stem Cells01:13

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No description available
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Induced Pluripotent Stem Cells01:13

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Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
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Video Experimental Relacionado

Updated: Mar 30, 2026

Author Spotlight: Reprogramming Cancer Cells to iPSCs to Study Disease Progression and Treatment Targets
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Author Spotlight: Reprogramming Cancer Cells to iPSCs to Study Disease Progression and Treatment Targets

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Dividiendo la pluripotencia.

Brenton R Graveley1

  • 1Department of Genetics and Developmental Biology, University of Connecticut Stem Cell Institute, University of Connecticut Health Center, Farmington, CT 06030, USA. graveley@neuron.uchc.edu

Cell
|October 4, 2011
PubMed
Resumen

Una variante de empalme FOXP1 recientemente identificada controla directamente los genes de pluripotencia en las células madre embrionarias humanas. Este hallazgo es crucial para mantener la pluripotencia de las células madre y reprogramar las células somáticas.

Área de la Ciencia:

  • Biología Molecular Biología Molecular
  • Biología de las células madre Biología de las células madre
  • Regulación genética Reglamento genético.

Sus antecedentes:

  • El gen FOXP1 juega un papel en el desarrollo celular.
  • Comprender la regulación de la pluripotencia es clave para la medicina regenerativa.

Objetivo del estudio:

  • Para identificar nuevos reguladores de los genes de pluripotencia.
  • Para investigar el papel de las variantes de empalme FOXP1 en la biología de las células madre.
  • Explorar los mecanismos subyacentes a la reprogramación de las células somáticas.

Principales métodos:

  • Análisis de las variantes de empalme FOXP1.
  • Análisis de la expresión génica en células madre embrionarias humanas.
  • Estudios funcionales sobre la reprogramación celular.

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Principales resultados:

  • Identificación de una nueva variante de empalme FOXP1.
  • Demostración de que esta variante regula directamente los genes de pluripotencia.
  • Evidencia de que la variante es esencial para mantener la pluripotencia y la reprogramación.

Conclusiones:

  • Se identifica una nueva variante de empalme FOXP1 como un regulador clave de la pluripotencia.
  • Esta variante juega un papel crítico en la función de las células madre embrionarias humanas.
  • Los hallazgos tienen implicaciones para la tecnología de células madre pluripotentes inducidas.