Acoustic trauma enhances DNA binding of transcription factor AP‐1 in the guinea pig inner ear
作者:
Kiyokazu Ogita,
Takeshi Matsunobu,
Jochen Schacht,
期刊:
NeuroReport
(OVID Available online 2000)
卷期:
Volume 11,
issue 4
页码: 859-862
ISSN:0959-4965
年代: 2000
出版商: OVID
关键词: Activator protein-1;c-Fos;Cochlea;CREB;DNA binding;Noise-induced hearing loss;Transcription factors
数据来源: OVID
摘要:
Radiolabeled probes for the transcription factor, activator protein-1 (AP-1), bound differentially to nuclear fractions of discrete structures of the guinea pig cochlea (organ of Corti, lateral wall tissues, and spiral ganglion). Noise exposure (4 kHz octave band, 115 dB, for 5 h) significantly increased AP-1 binding in both the organ of Corti and lateral wall tissues but not in the spiral ganglion. Supershift analysis using an antibody against c-Fos protein demonstrated that enhancement of AP-1/DNA binding was at least in part due to the expression of c-Fos protein. These results suggest that AP-1 is involved in the molecular mechanism(s) mediating noise-induced cochlear damage.
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