Transcriptional regulation of the human H ferritin-encoding gene (FERH) in G418-treated cells: role of the B-box-binding factor.
We have analysed the molecular basis underlying the increase in ferritin heavy-chain mRNA (FERH) levels in cells exposed to the antibiotic Geneticin (G418). Transient transfection experiments demonstrate that this increase is paralleled by an enhanced transcription driven by the promoter (pFERH) for the human FERH gene, in which the most proximal promoter element (B-box) appears to play a key role. This region is conserved in human and rat, and binds an unknown factor. The DNA-protein complex composed of B-box-binding factor and its cis-element becomes more abundant in the G418-treated cells, as compared with the untreated ones.
Bevilacqua
M A
MA
Dipartimento di Biocheimica e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Naples, Italy.
Faniello
M C
MC
Russo
T
T
Cimino
F
F
Costanzo
F
F
D000818:Animals; D001483:Base Sequence; D015152:Blotting, Northern; D002460:Cell Line; D004268:DNA-Binding Proteins / Q000502:physiology*; D005293:Ferritins / Q000235:genetics*; D005786:Gene Expression Regulation; D005839:Gentamicins / Q000494:pharmacology*; D006801:Humans; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D012333:RNA, Messenger / Q000096:biosynthesis; D051381:Rats; D012689:Sequence Homology, Nucleic Acid; D014158:Transcription, Genetic
D004268:DNA-Binding Proteins; D005839:Gentamicins; D012333:RNA, Messenger; D005293:Ferritins; C010680:antibiotic G 418