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Transcriptional regulation of CacyBP/SIP gene and the influence of increased CacyBP/SIP level on gene expression pattern in colorectal cancer HCT116 cells
被引:6
|作者:
Kadziolka, Beata
[1
]
Debski, Konrad J.
[1
]
Bieganowski, Pawel
[2
]
Lesniak, Wieslawa
[1
]
Filipek, Anna
[1
]
机构:
[1] Polish Acad Sci, Nencki Inst Expt Biol, Dept Mol & Cellular Neurobiol, Warsaw, Poland
[2] Polish Acad Sci, Dept Expt Pharmacol, Mossakowski Med Res Ctr, Warsaw, Poland
来源:
关键词:
CacyBP;
SIP;
CREB;
E2F1;
EGR1;
gene expression;
microarrays;
E2F FAMILY-MEMBERS;
NEUROBLASTOMA NB2A;
EMERGING ROLES;
PROTEIN;
RESPONSES;
PATHWAY;
TARGET;
GROWTH;
CREB;
PROLIFERATION;
D O I:
10.1002/iub.1698
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The CacyBP/SIP protein is expressed at a particularly high level in brain, spleen, and various tumors. In this work, we have studied transcriptional regulation of the CacyBP/SIP gene and the influence of increased CacyBP/SIP level on gene expression in colorectal cancer HCT116 cells. We have shown that E2F1, EGR1, and CREB transcription factors bind to the CacyBP/SIP gene promoter and stimulate transcription of CacyBP/SIP gene. The role of CREB was further confirmed by the observation that forskolin, a strong activator of CREB phosphorylation/activity, increased CacyBP/SIP gene promoter activity. Moreover, we have shown that CREB dominant negative mutants, CREB133 and KCREB, inhibits CacyBP/SIP promoter activity. To check the biological significance of increased CacyBP/SIP expression/level we have applied RNA microarray analysis and have found that upregulation of CacyBP/SIP entails changes in mRNA level of many genes involved, among others, in immune processes. (c) 2017 IUBMB Life, 70(1):50-59, 2018
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页码:50 / 59
页数:10
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