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Kikuno N, Shiina H, Urakami S, Kawamoto K, Hirata H, Tanaka Y, Place RF, Pookot D, Majid S, Igawa M, Dahiya R. Retraction Note: Knockdown of astrocyte-elevated gene-1 inhibits prostate cancer progression through upregulation of FOXO3a activity. Oncogene 2022; 41:4981. [PMID: 36261628 DOI: 10.1038/s41388-022-02501-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- N Kikuno
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - H Shiina
- Department of Urology, Shimane University School of Medicine, Izumo, Japan
| | - S Urakami
- Department of Urology, Shimane University School of Medicine, Izumo, Japan
| | - K Kawamoto
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - H Hirata
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - Y Tanaka
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - R F Place
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - D Pookot
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - S Majid
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - M Igawa
- Department of Urology, Shimane University School of Medicine, Izumo, Japan
| | - R Dahiya
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA, USA.
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Okino ST, Pookot D, Basak S, Dahiya R. Toxic and Chemopreventive Ligands Preferentially Activate Distinct Aryl Hydrocarbon Receptor Pathways: Implications for Cancer Prevention. Cancer Prev Res (Phila) 2009; 2:251-6. [DOI: 10.1158/1940-6207.capr-08-0146] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kikuno N, Shiina H, Urakami S, Kawamoto K, Hirata H, Tanaka Y, Place RF, Pookot D, Majid S, Igawa M, Dahiya R. Knockdown of astrocyte-elevated gene-1 inhibits prostate cancer progression through upregulation of FOXO3a activity. Oncogene 2007; 26:7647-55. [PMID: 17563745 DOI: 10.1038/sj.onc.1210572] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Astrocyte-elevated gene-1 (AEG-1) has been reported to be upregulated in several malignancies and play a critical role in Ha-ras-mediated oncogenesis through the phosphatidylinositol 3-kinase/AKT signaling pathway. However, the role of AEG-1 in prostate cancer (PC) has never been reported. We now show that AEG-1 is overexpressed in clinical PC tissue samples and cultured PC cells compared to benign prostatic hyperplasia tissue samples and normal prostate epithelial cells. Interestingly, AEG-1 knockdown induced cell apoptosis through upregulation of forkhead box (FOXO) 3a activity. This alteration of FOXO3a activity was dependent on reduction of AKT activity in LNCaP and PC-3 cells with high constitutive AKT activity, but not in DU145 cells with low constitutive AKT activity, although AEG-1 knockdown had no impact on phosphatase and tensin homolog expression in these cells. AEG-1 knockdown also attenuated the constitutive activity of the nuclear factor kappaB (NF-kappaB) and the activator protein 1 (AP-1) with a corresponding depletion in the expression of NF-kappaB and AP-1-regulated genes (interleukin (IL)-6, IL-8 and matrix metalloproteinase-9) and significantly decreased cell invasion properties of PC-3 and DU145 cells. Overall, our findings suggest that aberrant AEG-1 expression plays a dominant role as a positive auto-feedback activator of AKT and as a suppressor of FOXO3a in PC cells. AEG-1 may therefore represent a novel genetic biomarker to serve as an attractive molecular target for new anticancer agents to prevent PC cell progression and metastasis.
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Affiliation(s)
- N Kikuno
- Department of Urology, Veterans Affairs Medical Center and University of California, San Francisco, CA 94121, USA
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