Prostaglandin E2 reinforces the activation of Ras signal pathway in lung adenocarcinoma cells via EP3

  • Yano T
  • Zissel G
  • Muller-Qernheim J
 et al. 
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Abstract

Prostaglandin E2 (PGE2)-dependent effects on various cell responses are regulated by respective PGE2 receptors (EP1, EP2, EP3, EP4) expressing in target cells. Alveolar type II cell (a main progenitor cell of lung adenocarcinoma) expressed only EP4, while human lung adenocarcinoma cells (A549) expressed EP3 as well as EP4. An antagonistic effect of EP3 against EP4 through the modulation of cyclic AMP level is required for PGE2-mediated activation of Ras signal pathway in A549 cells. These results suggest that the expression of EP3 may be a critical factor for the PGE2-mediated activation of Ras signal pathway in A549 cells. ?? 2002 Published by Elsevier Science B.V. on behalf of the Federation of European Biochemical Societies.

Author-supplied keywords

  • Alveolar type II cell
  • EP3
  • Lung adenocarcinoma
  • Prostaglandin E2
  • Ras
  • cAMP

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Authors

  • Tomohiro Yano

  • Gernot Zissel

  • Joachim Muller-Qernheim

  • Sung Jae Shin

  • Haruna Satoh

  • Tomio Ichikawa

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