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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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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 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.
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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Transcription factor-mediated reprogramming: epigenetics and therapeutic potential.

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Area of Science:

  • * Epigenetics and cellular plasticity.
  • * Molecular biology and regenerative medicine.

Background:

  • * Cellular reprogramming is the conversion of one cell type to another via epigenetic modifications.
  • * Key methods include somatic cell nuclear transfer, cell fusion, and transcription factor (TF)-mediated reprogramming.
  • * TF-mediated reprogramming encompasses induced pluripotency and direct transdifferentiation pathways.

Purpose of the Study:

  • * To review TF-mediated reprogramming strategies.
  • * To explore associated epigenetic alterations.
  • * To discuss therapeutic applications.

Main Methods:

  • * Focus on TF-mediated reprogramming pathways: induced pluripotency and direct transdifferentiation.
  • * Analysis of epigenetic changes during reprogramming.
  • * Examination of therapeutic potentials.

Main Results:

  • * TF-mediated reprogramming offers diverse routes to cell conversion.
  • * Epigenetic modifications are central to reprogramming outcomes.
  • * Reprogramming holds promise for cellular therapies, disease modeling, and drug screening.

Conclusions:

  • * TF-mediated reprogramming is a versatile tool for cellular manipulation.
  • * Understanding epigenetic dynamics is crucial for optimizing reprogramming.
  • * Significant therapeutic potential exists for regenerative medicine and research.