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Related Experiment Videos

Tissue plasminogen activator expression in the embryonic nervous system

G C Friedman1, N W Seeds

  • 1Neuroscience Program, University of Colorado Health Sciences Center, Denver 80262.

Brain Research. Developmental Brain Research
|August 12, 1994
PubMed
Summary

Tissue plasminogen activator (tPA) is expressed in the developing mouse nervous system, particularly during embryogenesis. This suggests tPA plays a role in neural cell migration and tissue remodeling in the central nervous system.

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Area of Science:

  • Developmental Biology
  • Neuroscience
  • Molecular Biology

Background:

  • Tissue plasminogen activator (tPA) is a serine protease involved in fibrinolysis.
  • Its role in embryonic development, especially within the nervous system, is not fully understood.

Purpose of the Study:

  • To investigate the expression patterns of tPA during mouse embryogenesis.
  • To explore the potential functions of tPA in the developing central nervous system (CNS).

Main Methods:

  • In situ hybridization was used to detect tPA mRNA.
  • Whole mouse embryos were analyzed from embryonic day 10.5 (E10.5) to E17.5.

Main Results:

  • Strong tPA expression was observed in the basal midbrain and hindbrain, extending into the neural canal.

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  • tPA mRNA was detected in migrating and proliferating cells, including those in the cerebellar anlage and olfactory neuroepithelium.
  • Expression patterns correlated with regions of active cell migration, proliferation, and tissue remodeling.

    • Conclusions:

    • tPA is expressed by diverse cell types in the developing nervous system.
    • These findings suggest a significant role for tPA in CNS cell migration and tissue remodeling during embryogenesis.