title: Prostaglandin E2 reinforces the activation of Ras signal pathway in lung adenocarcinoma cells via EP3.
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.
authors: Department of Food Science Research for Health, National Institute of Health and Nutrition, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8636, Japan. yano@nih.go.jp
authors: Tomohiro
authors: T
authors: Yano
authors: Gernot
authors: G
authors: Zissel
authors: Joachim
authors: J
authors: Muller-Qernheim
authors: Sung
authors: S
authors: Jae Shin
authors: Haruna
authors: H
authors: Satoh
authors: Tomio
authors: T
authors: Ichikawa
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D002455:Cell Division / Q000187:drug effects; D000242:Cyclic AMP / Q000096:biosynthesis; D015232:Dinoprostone / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D020929:Mitogen-Activated Protein Kinase Kinases / Q000378:metabolism; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism; D016283:Proto-Oncogene Proteins p21(ras) / Q000378:metabolism*; D011650:Pulmonary Alveoli / Q000378:metabolism; D018078:Receptors, Prostaglandin E / Q000235:genetics / Q000378:metabolism*; D058308:Receptors, Prostaglandin E, EP3 Subtype; D015398:Signal Transduction; D014407:Tumor Cells, Cultured; D010566:Virulence Factors, Bordetella / Q000494:pharmacology
chemical_list: C545647:PTGER3 protein, human; D018078:Receptors, Prostaglandin E; D058308:Receptors, Prostaglandin E, EP3 Subtype; D010566:Virulence Factors, Bordetella; D000242:Cyclic AMP; D020928:Mitogen-Activated Protein Kinases; D020929:Mitogen-Activated Protein Kinase Kinases; C501009:HRAS protein, human; D016283:Proto-Oncogene Proteins p21(ras); D015232:Dinoprostone