4.6 Article

Phosphatidylinositol 3-Kinase/Akt Pathway Targets Acetylation of Smad3 through Smad3/CREB-binding Protein Interaction CONTRIBUTION TO TRANSFORMING GROWTH FACTOR β1-INDUCED EPSTEIN-BARR VIRUS REACTIVATION

Journal

JOURNAL OF BIOLOGICAL CHEMISTRY
Volume 284, Issue 36, Pages 23912-23924

Publisher

AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
DOI: 10.1074/jbc.M109.036483

Keywords

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Funding

  1. French network Herpesviruses and Cancer, Association pour la Recherche sur le Cancer Grant [3572]
  2. Groupement des Entreprises Francaises dans la Lutte contre le Cancer (GEFLUC)
  3. Tunisian Ministry of Higher Education, Research and Technology
  4. INSERM
  5. Institut Francilien de Recherche en Nephrologie et Transplantation
  6. Association Nouvelles Recherches Biomedicales
  7. Association pour l'Utilisation du Rein Artificiel
  8. Naturalia and Biologia

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Epstein-Barr virus, a ubiquitous human herpesvirus, is associated with the development of carcinomas and lymphomas. We previously showed that transforming growth factor beta 1 (TGF-beta 1) mediated the virus to enter the lytic cycle, which is triggered by expression of Z Epstein-Barr virus replication activator (ZEBRA), through the ERK 1/2 MAPK signaling pathway. We report here that Akt, activated downstream from ERK 1/2, was required for TGF-beta 1-induced ZEBRA expression and enabled Smad3, a mediator of TGF-beta 1 signaling, to be acetylated by direct interaction with the co-activator CREB-binding protein and then to regulate TGF-beta 1-induced ZEBRA expression.

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