Abstract
Long intergenic noncoding RNAs (lincRNAs) can regulate the transcription of inflammatory genes and thus may represent a new group of inflammatory mediators with a potential pathogenic role in inflammatory diseases. Here, our genome-wide transcriptomic data show that TNF-α stimulation caused upregulation of 171 lincRNAs and down-regulation of 196 lincRNAs in murine intestinal epithelial cells in culture. One of the up-regulated lincRNAs, lincRNA-Cox2, is an early-responsive lincRNA induced by TNF-α through activation of the NF-κB signaling pathway. Knockdown of lincRNA-Cox2 resulted in reprogramming of the gene expression profile in intestinal epithelial cells in response to TNF-α stimulation. Specifically, lincRNA-Cox2 silencing significantly (P <0.05) enhanced the transcription of Il12b, a secondary late-responsive gene induced by TNF-α. Mechanistically, lincRNA-Cox2 promoted the recruitment of the Mi-2/nucleosome remodeling and deacetylase (Mi-2/NuRD) repressor complex tothe Il12b promoter region. Recruitment of the Mi-2/NuRD complex was associated with decreased H3K27 acetylation and increased H3K27 dimethylation at the Il12b promoter region, which might contribute to Il12b trans-suppression by lincRNA-Cox2. Thus, our data demonstrate a novel mechanism of epigenetic modulation by lincRNA-Cox2 on Il12b transcription, supporting an important role for lincRNAs in the regulation of intestinal epithelial inflammatory responses.
| Original language | English |
|---|---|
| Pages (from-to) | 1187-1197 |
| Number of pages | 11 |
| Journal | FASEB Journal |
| Volume | 30 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1 2016 |
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All Science Journal Classification (ASJC) codes
- Biochemistry
- Biotechnology
- Genetics
- Molecular Biology
Cite this
LincRNA-Cox2 modulates TNF-α-induced transcription of Il12b gene in intestinal epithelial cells through regulation of Mi-2/NuRD-mediated epigenetic histone modifications. / Tong, Qiang; Gong, Ai Yu; Zhang, Xin Tian; Lin, Chengchi; Ma, Shibin; Chen, Jing; Hu, Guoku; Chen, Xian-Ming.
In: FASEB Journal, Vol. 30, No. 3, 01.03.2016, p. 1187-1197.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - LincRNA-Cox2 modulates TNF-α-induced transcription of Il12b gene in intestinal epithelial cells through regulation of Mi-2/NuRD-mediated epigenetic histone modifications
AU - Tong, Qiang
AU - Gong, Ai Yu
AU - Zhang, Xin Tian
AU - Lin, Chengchi
AU - Ma, Shibin
AU - Chen, Jing
AU - Hu, Guoku
AU - Chen, Xian-Ming
PY - 2016/3/1
Y1 - 2016/3/1
N2 - Long intergenic noncoding RNAs (lincRNAs) can regulate the transcription of inflammatory genes and thus may represent a new group of inflammatory mediators with a potential pathogenic role in inflammatory diseases. Here, our genome-wide transcriptomic data show that TNF-α stimulation caused upregulation of 171 lincRNAs and down-regulation of 196 lincRNAs in murine intestinal epithelial cells in culture. One of the up-regulated lincRNAs, lincRNA-Cox2, is an early-responsive lincRNA induced by TNF-α through activation of the NF-κB signaling pathway. Knockdown of lincRNA-Cox2 resulted in reprogramming of the gene expression profile in intestinal epithelial cells in response to TNF-α stimulation. Specifically, lincRNA-Cox2 silencing significantly (P <0.05) enhanced the transcription of Il12b, a secondary late-responsive gene induced by TNF-α. Mechanistically, lincRNA-Cox2 promoted the recruitment of the Mi-2/nucleosome remodeling and deacetylase (Mi-2/NuRD) repressor complex tothe Il12b promoter region. Recruitment of the Mi-2/NuRD complex was associated with decreased H3K27 acetylation and increased H3K27 dimethylation at the Il12b promoter region, which might contribute to Il12b trans-suppression by lincRNA-Cox2. Thus, our data demonstrate a novel mechanism of epigenetic modulation by lincRNA-Cox2 on Il12b transcription, supporting an important role for lincRNAs in the regulation of intestinal epithelial inflammatory responses.
AB - Long intergenic noncoding RNAs (lincRNAs) can regulate the transcription of inflammatory genes and thus may represent a new group of inflammatory mediators with a potential pathogenic role in inflammatory diseases. Here, our genome-wide transcriptomic data show that TNF-α stimulation caused upregulation of 171 lincRNAs and down-regulation of 196 lincRNAs in murine intestinal epithelial cells in culture. One of the up-regulated lincRNAs, lincRNA-Cox2, is an early-responsive lincRNA induced by TNF-α through activation of the NF-κB signaling pathway. Knockdown of lincRNA-Cox2 resulted in reprogramming of the gene expression profile in intestinal epithelial cells in response to TNF-α stimulation. Specifically, lincRNA-Cox2 silencing significantly (P <0.05) enhanced the transcription of Il12b, a secondary late-responsive gene induced by TNF-α. Mechanistically, lincRNA-Cox2 promoted the recruitment of the Mi-2/nucleosome remodeling and deacetylase (Mi-2/NuRD) repressor complex tothe Il12b promoter region. Recruitment of the Mi-2/NuRD complex was associated with decreased H3K27 acetylation and increased H3K27 dimethylation at the Il12b promoter region, which might contribute to Il12b trans-suppression by lincRNA-Cox2. Thus, our data demonstrate a novel mechanism of epigenetic modulation by lincRNA-Cox2 on Il12b transcription, supporting an important role for lincRNAs in the regulation of intestinal epithelial inflammatory responses.
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U2 - 10.1096/fj.15-279166
DO - 10.1096/fj.15-279166
M3 - Article
VL - 30
SP - 1187
EP - 1197
JO - FASEB Journal
JF - FASEB Journal
SN - 0892-6638
IS - 3
ER -