Abstract | BACKGROUND: Our goal was to investigate de novo purine biosynthetic gene PAICS expression and evaluate its role in prostate cancer progression. METHODS: RESULTS: Molecular staging of prostate cancer is important factor in effective diagnosis, prognosis and therapy. In this study, we identified a de novo purine biosynthetic gene; PAICS is overexpressed in PCa and its expression correlated with disease aggressiveness. Through several in vitro and in vivo functional studies, we show that PAICS is necessary for proliferation and invasion in prostate cancer cells. We identified JQ1, a BET bromodomain inhibitor previously implicated in regulating MYC expression and demonstrated role in prostate cancer, abrogates PAICS expression in several prostate cancer cells. Furthermore, we observe loss of MYC occupancy on PAICS promoter in presence of JQ1. CONCLUSIONS: Here, we report that evaluation of PAICS in prostate cancer progression and its role in prostate cancer cell proliferation and invasion and suggest it as a valid therapeutic target. We suggest JQ1, a BET-domain inhibitor, as possible therapeutic option in targeting PAICS in prostate cancer. Prostate 77:10-21, 2017. © 2016 Wiley Periodicals, Inc.
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Authors | Balabhadrapatruni V S K Chakravarthi, Moloy T Goswami, Satya S Pathi, Matthew Dodson, Darshan S Chandrashekar, Sumit Agarwal, Saroj Nepal, Sai Akshaya Hodigere Balasubramanya, Javed Siddiqui, Robert J Lonigro, Arul M Chinnaiyan, Lakshmi P Kunju, Nallasivam Palanisamy, Sooryanarayana Varambally |
Journal | The Prostate
(Prostate)
Vol. 77
Issue 1
Pg. 10-21
(01 2017)
ISSN: 1097-0045 [Electronic] United States |
PMID | 27550065
(Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)
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Copyright | © 2016 Wiley Periodicals, Inc. |
Chemical References |
- Biomarkers, Tumor
- Purines
- Peptide Synthases
- phosphoribosylaminoimidazole-succinocarboxamide synthetase
- purine
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Topics |
- Animals
- Biomarkers, Tumor
(biosynthesis, genetics)
- Cell Line, Tumor
- Chickens
- Gene Expression Regulation, Enzymologic
- Gene Expression Regulation, Neoplastic
- Humans
- Male
- Mice
- Mice, Nude
- Neoplasm Invasiveness
(pathology)
- Peptide Synthases
(biosynthesis, genetics)
- Prostatic Neoplasms
(enzymology, genetics, pathology)
- Protein Biosynthesis
(physiology)
- Purines
(biosynthesis)
- Xenograft Model Antitumor Assays
(methods)
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