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Related Experiment Videos

Nuclear reprogramming in mammalian somatic cell nuclear cloning.

H Tamada1, N Kikyo

  • 1Stem Cell Institute, Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN 55455, USA.

Cytogenetic and Genome Research
|July 9, 2004
PubMed
Summary

Nuclear cloning, a technique for creating genetically identical animals, has a low success rate. However, using lymphocyte nuclei shows promise for successful animal cloning and understanding cell differentiation.

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Area of Science:

  • Reproductive biology
  • Developmental biology
  • Genetics

Background:

  • Nuclear cloning via somatic cell nuclear transfer (SCNT) aims to create genetically identical animals.
  • Current SCNT techniques yield viable offspring in less than 5% of attempts.
  • Cloned animals often exhibit difficulties in reprogramming donor cell epigenetic states.

Purpose of the Study:

  • To investigate the potential of terminally differentiated lymphocyte nuclei for successful nuclear reprogramming in cloning.
  • To understand the mechanisms underlying successful nuclear reprogramming in cloned animals.
  • To contribute to the understanding of cell differentiation processes.

Main Methods:

  • Somatic cell nuclear transfer (SCNT) using nuclei from terminally differentiated lymphocytes.

Related Experiment Videos

  • Assessment of epigenetic reprogramming markers (gene expression, DNA methylation, imprinting, histone modifications, telomere length).
  • Evaluation of offspring viability and normalcy.

    • Main Results:

    • Nuclei from terminally differentiated lymphocytes can overcome reprogramming barriers.
    • Successful production of apparently normal cloned mice using lymphocyte nuclei.
    • Demonstration of significant nuclear reprogramming activity.

    Conclusions:

    • Terminally differentiated lymphocyte nuclei are a viable source for nuclear cloning.
    • Successful reprogramming of lymphocyte nuclei offers insights into overcoming epigenetic barriers.
    • This research advances the understanding of cell differentiation and nuclear reprogramming.