P300 regulates the human RLIP76 promoter activity and gene expression
Open accessAbstract
A 76-kDa Ral-interacting protein (RLIP76) has been implicated in the pathogenesis of cancer and diabetes. It is often over expressed in human malignant cell lines and human tumor samples and has been associated with metastasis and chemoresistance. RLIP76 homozygous knockout mice exhibit increased insulin sensitivity, hypoglycemia, and hypolipidemia, and resist cancer development. Little is known about the mechanism by which the expression of RLIP76 is regulated. In the present study, we functionally characterized the RLIP76 promoter using deletion mapping and mutational analysis to investigate the regulation of RLIP76 transcription. We have identified the promoter regions important for RLIP76 transcription, including a strong cis-activating element in the proximal promoter containing overlapping consensus cMYB and cETS binding sites. Transcription factor cMYB and the coactivator p300 associated with RLIP76 gene promoter as shown by CHIP assay. Knockdown of p300 in HEK293 cells reduced the activity of the promoter fragment containing wild type cMYB/cETS binding site in comparison to that with deleted or mutated cMYB/cETS binding site. Knockdown of p300 also decreased the RLIP76 expression as indicated by immunoblotting, immunocytochemistry and flow cytometry analysis. Thus, we report for the first time that p300 associates with the RLIP76 promoter via an overlapping cMYB and cETS binding site and regulates RLIP76 promoter activity and its expression.
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p300 regulates the expression of Rlip.
“It has also been found that p300 regulates the expression of Rlip [122].”
From Rlip76: An Unexplored Player in Neurodegeneration and Alzheimer’s Disease? (2022) · cites this paper as [122]
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Cited by
Sorted by citations
Rlip76: An Unexplored Player in Neurodegeneration and Alzheimer’s Disease?
Hindle, A., Singh, S. P., Pradeepkiran, J. A., Bose, C., Vijayan, M., Kshirsagar, S., Sawant, N. A., & Reddy, P. H. (2022) · International Journal of Molecular Sciences · doi:10.3390/ijms23116098 · Cited by 14 · see citing works
- Authors
- Sehrawat, A., Yadav, S., Awasthi, Y. C., Basu, A., Warden, C., & Awasthi, S.
- Affiliations
- University of North Texas Health Science Center (US)
- City Of Hope National Medical Center (US)
- Venue
- Biochemical Pharmacology
- Publisher
- Elsevier BV
- Published
- 2013-04
- Volume
- 85
- Issue
- 8
- Pages
- 1203-1211
- ISSN
- 0006-2952 (ISSN-L)
- PMC
- PMC3822774
- OpenAlex
- W2092143393
- Cited by
- 14
- References
- 0
- Citations by year
- 2024: 1 · 2022: 4 · 2021: 1 · 2018: 2 · 2017: 2 · 2016: 1 · 2014: 1 · 2013: 2
- FWCI
- 0.60
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Biochemical Pharmacology (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- University of North Texas
- National Institutes of Health
- National Cancer Institute (CA 77495, R01CA077495)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mechanisms of cancer metastasis
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Keywords
- RLIP76, P300, promoter regulation, transcriptional regulation, crosstalk, MYB, transcriptional coactivator, gene expression
- MeSH terms
- Base Sequence, Binding Sites, Gene Expression Regulation, Humans, Molecular Sequence Data, Neoplasms, Promoter Regions, Genetic, RNA, Messenger, ATP-Binding Cassette Transporters, Proto-Oncogene Proteins c-myb, GTPase-Activating Proteins, Proto-Oncogene Proteins c-ets, E1A-Associated p300 Protein, HEK293 Cells
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