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Manipulation of blastodermal cells

R J Etches1, M E Clark, L Zajchowski

  • 1Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.

Poultry Science
|August 1, 1997
PubMed
Summary
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Early-stage blastodermal cells possess pluripotential stem cell properties, contributing to somatic tissues and germline. These cells are suitable for genetic modification and germline transmission.

Area of Science:

  • Developmental biology
  • Stem cell biology
  • Genetics

Background:

  • Blastodermal cells from unincubated eggs are uncommitted and resemble pluripotential stem cells.
  • These cells can integrate into recipient embryos, contributing to both somatic and germline tissues.

Purpose of the Study:

  • To investigate the stem cell-like properties of blastodermal cells.
  • To evaluate their potential for genetic modification and germline transmission.

Main Methods:

  • Isolation and culture of blastodermal cells.
  • Assessment of cell surface epitopes (ECMA-7, SSEA-1).
  • In vivo and in vitro differentiation assays.
  • Analysis of proliferation and differentiation factors (LIF, retinoic acid).
  • Telomerase activity assays.

Related Experiment Videos

  • Gene transfection and expression studies.
  • Cryopreservation and functional assessment.

    • Main Results:

    • Blastodermal cells express stem cell epitopes (ECMA-7, SSEA-1) after 7 days in culture.
    • They retain differentiation potential into somatic and germline tissues.
    • Leukemia Inhibitory Factor (LIF) promotes proliferation, while retinoic acid stimulates differentiation.
    • High telomerase activity is observed.
    • Transfected blastodermal cells express foreign genes and can be cryopreserved without losing function.

    Conclusions:

    • Blastodermal cells exhibit pluripotency and stem cell characteristics.
    • They are amenable to genetic manipulation and can serve as effective vectors for germline modification.