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IL2-like material is present in human placenta and amnion.

P Soubiran1, J P Zapitelli, L Schaffar

  • 1INSERM U210, Faculté de Médecine (Pasteur), Nice, France.

Journal of Reproductive Immunology
|November 1, 1987
PubMed
Summary

Human term placenta cells express a molecule that reacts with anti-interleukin 2 (IL2) antibodies. This suggests the presence of IL2 or a similar protein, but not a conventional IL2 receptor, in placental tissues.

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Area of Science:

  • Immunology
  • Reproductive Biology
  • Cell Biology

Background:

  • Interleukin 2 (IL2) is a cytokine crucial for immune responses.
  • The presence and function of IL2 and its receptor in human placenta are not fully understood.

Purpose of the Study:

  • To investigate the presence of IL2 or IL2-like molecules in human term placenta.
  • To determine if a conventional IL2 receptor is expressed in placental tissues.

Main Methods:

  • Indirect immunofluorescence on frozen sections of human term placenta.
  • ব্যবহার of polyclonal and monoclonal antibodies against IL2 and IL2 receptor components.

Main Results:

  • Placental cells, including syncytiotrophoblast, amniotic epithelium, and cytotrophoblast, showed reactivity with several anti-IL2 antibodies.

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  • Reactivity was abolished by pre-incubation with IL2, indicating specificity for IL2 or a closely related molecule.
  • No evidence of a conventional 55 kDa IL2 receptor chain was found using specific monoclonal antibodies.

    • Conclusions:

    • Human term placenta expresses a molecule recognized by anti-IL2 antibodies, suggesting localized IL2 or an IL2-like substance.
    • The absence of a detectable conventional IL2 receptor implies a unique signaling pathway or alternative receptor in the placenta.