Evidence for a functional glucocorticoid responsive element in the Epstein-Barr virus genome.
Glucocorticoids induce the expression of Epstein-Barr virus early antigens in latently infected Daudi cells. By sequence analysis, we found that fragment C of the BamHI digested Epstein-Barr virus B95-8 genome contains a region with a large degree of homology to the glucocorticoid responsive element of known glucocorticoid-regulated genes. By transfection experiments in Daudi and HeLa cells, different lengths of this region, cloned in front of the bacterial chloramphenicol acetyl transferase linked to the Herpes Simplex virus thymidine kinase promoter (pBLCAT.2), were assayed for their responsiveness to dexamethasone; our results led us to the conclusion that the hormonal effect observed was mediated by a minimal sequence of 15 base pairs presenting 85% homology with the consensus glucocorticoid responsive element sequence.
Schuster
C
C
Institut de Biologie Moléculaire et Cellulaire du CNRS, Strasbourg, France.
Chasserot-Golaz
S
S
Urier
G
G
Beck
G
G
Sergeant
A
A
D001483:Base Sequence; D002460:Cell Line; D003001:Cloning, Molecular; D004279:DNA, Viral / Q000235:genetics; D015245:Deoxyribonuclease BamHI; D003907:Dexamethasone / Q000494:pharmacology; D015967:Gene Expression Regulation, Viral / Q000187:drug effects*; D005814:Genes, Viral; D005938:Glucocorticoids / Q000494:pharmacology*; D006367:HeLa Cells; D004854:Herpesvirus 4, Human / Q000235:genetics*; D006801:Humans; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D012689:Sequence Homology, Nucleic Acid; D013937:Thymidine Kinase / Q000235:genetics; D014162:Transfection
D004279:DNA, Viral; D005938:Glucocorticoids; D003907:Dexamethasone; D013937:Thymidine Kinase; D015245:Deoxyribonuclease BamHI