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The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
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Generation of Mice Derived from Induced Pluripotent Stem Cells
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Totipotency in the mouse.

Guangming Wu1, Lei Lei1,2, Hans R Schöler3,4

  • 1Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149, Münster, Germany.

Journal of Molecular Medicine (Berlin, Germany)
|January 20, 2017
PubMed
Summary
This summary is machine-generated.

Mammalian zygotes possess totipotency, the ability to form all cell types. This review explores the molecular mechanisms and transcriptional regulation underlying this crucial early developmental stage in mouse embryos.

Keywords:
TotipotencyTranscription factorsZygote

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Area of Science:

  • Developmental Biology
  • Genetics
  • Epigenetics

Background:

  • Mammalian embryogenesis begins with a unicellular zygote.
  • The zygote differentiates into diverse somatic cells, forming fetal and extraembryonic lineages.
  • Totipotency enables the zygote to develop into a complete organism with over 200 tissue types.

Purpose of the Study:

  • To review recent findings on the molecular properties of totipotency.
  • To elucidate the molecular signature of totipotent cells.
  • To understand the transcriptional regulation networks governing totipotency in mouse embryos.

Main Methods:

  • Literature review of recent findings.
  • Analysis of molecular signatures.
  • Examination of transcriptional regulation mechanisms.

Main Results:

  • Oocyte maternal factors reprogram parental genomes upon fertilization.
  • The zygote is established as a totipotent cell.
  • Key molecular properties and regulatory networks of totipotency are being uncovered.

Conclusions:

  • Totipotency is a fundamental property of the early mammalian zygote.
  • Understanding totipotency requires investigating molecular signatures and transcriptional networks.
  • Further research is needed to fully comprehend the mechanisms of totipotency.