Activator protein 2 alpha (AP2alpha) suppresses 42 kDa C/CAAT enhancer binding protein alpha (p42(C/EBPalpha)) in head and neck squamous cell carcinoma.
Activator protein 2 alpha (AP2alpha) suppresses 42 kDa C/CAAT enhancer binding protein alpha (p42(C/EBPalpha)) in head and neck squamous cell carcinoma.
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DOI:
10.1002/ijc.24087
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发表时间:
2009-03-15
影响因子:
6.4
通讯作者:
Plass, Christoph
中科院分区:
文献类型:
--
作者:
Bennett, Kristi L.;Romigh, Todd;Arab, Khelifa;Teresi, Rosemary E.;Tada, Yasuhiro;Eng, Charis;Plass, Christoph
关键词:
The tumor suppressor C/CAAT enhancer binding protein alpha (C/EBPα) is a transcription factor involved in cell cycle control and cellular differentiation. A recent study showed that C/EBPα is frequently downregulated in Head and Neck Squamous Cell carcinoma (HNSCC) by DNA methylation in an upstream regulatory region. Here we investigated how DNA methylation in the upstream regulatory region disrupts the transcriptional regulation of C/EBPα in HNSCC. The results reveal that aberrant methylation correlates with Methyl Binding Domain protein binding and repressive histone modifications. This methylated region contains previously uninvestigated AP2α binding sites. AP2α suppresses C/EBPα promoter activity and protein expression. Interestingly, silencing AP2α by shRNA increases the anti-proliferative isoform of C/EBPα (p42C/EBPα). Furthermore, growth analysis revealed that these two isoforms yield very different proliferative properties in HNSCC.
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DOI:
10.1084/jem.20050067
发表时间:
2005-07-04
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Porse BT;Bryder D;Theilgaard-Mönch K;Hasemann MS;Anderson K;Damgaard I;Jacobsen SE;Nerlov C
通讯作者:
Nerlov C
DOI:
10.1073/pnas.90.20.9606
发表时间:
1993-10-15
影响因子:
11.1
作者:
LIN, FT;MACDOUGALD, OA;LANE, MD
通讯作者:
LANE, MD
影响因子:
11.4
作者:
Kaeferstein, A;Krug, U;Verbeek, W
通讯作者:
Verbeek, W
DOI:
10.1111/j.1600-0749.2005.00249.x
发表时间:
2005-10-01
期刊:
PIGMENT CELL RESEARCH
影响因子:
--
作者:
Bismuth, K;Maric, D;Arnheiter, H
通讯作者:
Arnheiter, H
DOI:
10.1073/pnas.0510171102
发表时间:
2006-01-24
影响因子:
11.1
作者:
Smith, LT;Lin, MT;Plass, C
通讯作者:
Plass, C