Abstract
Chromatin structure is a fundamental component of gene regulation, expression, and cellular differentiation. We have previously reported that the multifunctional coactivator p300 is a member of the Sox9 (Sry-type high mobility group box 9)-related transcriptional apparatus and activates Sox9-dependent transcription during chondrogenesis. However, the mechanism of synergy between Sox9 and p300 in chromatin-mediated transcription has not been elucidated. In the present study we investigated the activity of Sox9 and p300 on chromatinized templates in vitro. Recombinant Sox9 was shown to be associated with several transcriptional cofactors including p300. In vitro transcription assays revealed that p300 potentiated Sox9-dependent transcription on chromatinized DNA and, importantly, was associated with hyperacetylated histones. Consistent with these results, the histone deacetylase inhibitor trichostatin A stimulated the expression of Sox9-regulated cartilage matrix genes and induced histone acetylation around the enhancer region of the collagen α1 (II) gene in chondrocytes. These findings suggest that Sox9 interacts with chromatin and activates transcription via regulation of chromatin modification.
| Original language | English |
|---|---|
| Pages (from-to) | 35203-35208 |
| Number of pages | 6 |
| Journal | Journal of Biological Chemistry |
| Volume | 280 |
| Issue number | 42 |
| DOIs | |
| Publication status | Published - Oct 21 2005 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Biochemistry
Cite this
Sox9 and p300 cooperatively regulate chromatin-mediated transcription. / Furumatsu, Takayuki; Tsuda, Masanao; Yoshida, Kenji; Taniguchi, Noboru; Ito, Tatsuo; Hashimoto, Megumi; Ito, Takashi; Asahara, Hiroshi.
In: Journal of Biological Chemistry, Vol. 280, No. 42, 21.10.2005, p. 35203-35208.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Sox9 and p300 cooperatively regulate chromatin-mediated transcription
AU - Furumatsu, Takayuki
AU - Tsuda, Masanao
AU - Yoshida, Kenji
AU - Taniguchi, Noboru
AU - Ito, Tatsuo
AU - Hashimoto, Megumi
AU - Ito, Takashi
AU - Asahara, Hiroshi
PY - 2005/10/21
Y1 - 2005/10/21
N2 - Chromatin structure is a fundamental component of gene regulation, expression, and cellular differentiation. We have previously reported that the multifunctional coactivator p300 is a member of the Sox9 (Sry-type high mobility group box 9)-related transcriptional apparatus and activates Sox9-dependent transcription during chondrogenesis. However, the mechanism of synergy between Sox9 and p300 in chromatin-mediated transcription has not been elucidated. In the present study we investigated the activity of Sox9 and p300 on chromatinized templates in vitro. Recombinant Sox9 was shown to be associated with several transcriptional cofactors including p300. In vitro transcription assays revealed that p300 potentiated Sox9-dependent transcription on chromatinized DNA and, importantly, was associated with hyperacetylated histones. Consistent with these results, the histone deacetylase inhibitor trichostatin A stimulated the expression of Sox9-regulated cartilage matrix genes and induced histone acetylation around the enhancer region of the collagen α1 (II) gene in chondrocytes. These findings suggest that Sox9 interacts with chromatin and activates transcription via regulation of chromatin modification.
AB - Chromatin structure is a fundamental component of gene regulation, expression, and cellular differentiation. We have previously reported that the multifunctional coactivator p300 is a member of the Sox9 (Sry-type high mobility group box 9)-related transcriptional apparatus and activates Sox9-dependent transcription during chondrogenesis. However, the mechanism of synergy between Sox9 and p300 in chromatin-mediated transcription has not been elucidated. In the present study we investigated the activity of Sox9 and p300 on chromatinized templates in vitro. Recombinant Sox9 was shown to be associated with several transcriptional cofactors including p300. In vitro transcription assays revealed that p300 potentiated Sox9-dependent transcription on chromatinized DNA and, importantly, was associated with hyperacetylated histones. Consistent with these results, the histone deacetylase inhibitor trichostatin A stimulated the expression of Sox9-regulated cartilage matrix genes and induced histone acetylation around the enhancer region of the collagen α1 (II) gene in chondrocytes. These findings suggest that Sox9 interacts with chromatin and activates transcription via regulation of chromatin modification.
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UR - http://www.scopus.com/inward/citedby.url?scp=27444436736&partnerID=8YFLogxK
U2 - 10.1074/jbc.M502409200
DO - 10.1074/jbc.M502409200
M3 - Article
C2 - 16109717
AN - SCOPUS:27444436736
VL - 280
SP - 35203
EP - 35208
JO - Journal of Biological Chemistry
JF - Journal of Biological Chemistry
SN - 0021-9258
IS - 42
ER -