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Caspase-14 expression in the human placenta.

Daniel W R Kam1, Adrian K Charles, Arun M Dharmarajan

  • 1School of Anatomy and Human Biology, Faculty of Life and Physical Sciences, University of Western Australia, 35 Stirling Highway Crawley, Perth, Western Australia 6009.

Reproductive Biomedicine Online
|September 20, 2005
PubMed
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Caspase-14 is found in human placenta, mainly in trophoblast cells. Its expression is higher in early pregnancy, but its role isn't solely tied to apoptosis.

Area of Science:

  • Reproductive biology
  • Cellular biology
  • Developmental biology

Background:

  • Caspase-14 is crucial for skin differentiation and highly expressed in the skin.
  • Its presence and role in the human placenta remain uninvestigated.

Purpose of the Study:

  • To ascertain the expression of caspase-14 in first-trimester and term human placentae.
  • To investigate the potential association between caspase-14 and placental apoptosis.

Main Methods:

  • Western blot analysis to quantify caspase-14 protein levels.
  • Immunohistochemistry to localize caspase-14 expression.
  • Explant culture model with superoxide dismutase (SOD) to modulate apoptosis.

Main Results:

Related Experiment Videos

  • Caspase-14 is expressed in human placental trophoblast cells and mesenchyme.
  • Protein levels of caspase-14 were significantly higher in first-trimester placentae compared to term placentae.
  • Caspase-14 expression was diffuse in the trophoblast layer, not restricted to apoptotic cells.
  • Inhibition of apoptosis using SOD did not alter caspase-14 protein concentrations.

    • Conclusions:

    • Caspase-14 is present in the human placenta, predominantly within trophoblast cells.
    • The expression of caspase-14 decreases from the first trimester to term.
    • Caspase-14's function in the placenta is unclear and does not appear to be solely related to apoptosis.