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Kiliti AJ, Sharif GM, Wellstein A, Riegel AT. Subpopulations of AIB1 isoform-expressing breast cancer cells enable invasion and metastasis. Oncotarget 2023; 14:780-781. [PMID: 37646773 PMCID: PMC10467624 DOI: 10.18632/oncotarget.28452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Indexed: 09/01/2023] Open
Affiliation(s)
| | | | | | - Anna T. Riegel
- Correspondence to:Anna T. Riegel, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA email
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2
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Kiliti AJ, Sharif GM, Martin MB, Wellstein A, Riegel AT. AIB1/SRC-3/NCOA3 function in estrogen receptor alpha positive breast cancer. Front Endocrinol (Lausanne) 2023; 14:1250218. [PMID: 37711895 PMCID: PMC10498919 DOI: 10.3389/fendo.2023.1250218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/14/2023] [Indexed: 09/16/2023] Open
Abstract
The estrogen receptor alpha (ERα) is a steroid receptor that is pivotal in the initiation and progression of most breast cancers. ERα regulates gene transcription through recruitment of essential coregulators, including the steroid receptor coactivator AIB1 (Amplified in Breast Cancer 1). AIB1 itself is an oncogene that is overexpressed in a subset of breast cancers and is known to play a role in tumor progression and resistance to endocrine therapy through multiple mechanisms. Here we review the normal and pathological functions of AIB1 in regard to its ERα-dependent and ERα-independent actions, as well as its genomic conservation and protein evolution. We also outline the efforts to target AIB1 in the treatment of breast cancer.
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Affiliation(s)
- Amber J. Kiliti
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, United States
- Department of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC, United States
| | - Ghada M. Sharif
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, United States
| | - Mary Beth Martin
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, United States
- Department of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC, United States
| | - Anton Wellstein
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, United States
| | - Anna T. Riegel
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, United States
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3
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Miller J, Dakic A, Spurgeon M, Saenz F, Kallakury B, Zhao B, Zhang J, Zhu J, Ma Q, Xu Y, Lambert P, Schlegel R, Riegel AT, Liu X. AIB1 is a novel target of the high-risk HPV E6 protein and a biomarker of cervical cancer progression. J Med Virol 2022; 94:3962-3977. [PMID: 35437795 PMCID: PMC9199254 DOI: 10.1002/jmv.27795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/13/2022] [Accepted: 04/17/2022] [Indexed: 11/10/2022]
Abstract
The high-risk human papillomaviruses (HPV-16, -18) are critical etiologic agents in human malignancy, most importantly in cervical cancer. These oncogenic viruses encode the E6 and E7 proteins that are uniformly retained and expressed in cervical cancers and required for maintenance of the tumorigenic phenotype. The E6 and E7 proteins were first identified as targeting the p53 and pRB tumor suppressor pathways, respectively, in host cells, thereby leading to disruption of cell cycle controls. In addition to p53 degradation, a number of other functions and critical targets for E6 have been described, including telomerase, Myc, PDZ-containing proteins, Akt, Wnt, mTORC1, as well as others. In this study, we identified Amplified in Breast Cancer 1 (AIB1) as a new E6 target. We first found that E6 and hTERT altered similar profiling of gene expression in human foreskin keratinocytes (HFK), independent of telomerase activity. Importantly, AIB1 was a common transcriptional target of both E6 and hTERT. We then verified that high-risk E6 but not low-risk E6 expression led to increases in AIB1 transcript levels by real-time RT-PCR, suggesting that AIB1 upregulation may play an important role in cancer development. Western blots demonstrated that AIB1 expression increased in HPV-16 E6 and E7 expressing (E6E7) immortalized foreskin and cervical keratinocytes, and in three of four common cervical cancer cell lines as well. Then, we evaluated the expression of AIB1 in human cervical lesions and invasive carcinoma using immunohistochemical staining. Strikingly, AIB1 showed positivity in the nucleus of cells in the immediate suprabasal epithelium, while nuclei of the basal epithelium were negative, as evident in the Cervical Intraepithelial Neoplasia 1 (CIN1) samples. As the pathological grading of cervical lesions increased from CIN1, CIN2, CIN3 carcinoma in situ and invasive carcinoma, AIB1 staining increased progressively, suggesting that AIB1 may serve as a novel histological biomarker for cervical cancer development. For cases of invasive cervical carcinoma, AIB1 staining was specific to cancerous lesions. Increased expression of AIB1 was also observed in transgenic mouse cervical neoplasia and cancer models induced by E6E7 and estrogen. Knockdown of AIB1 expression in E6E7 immortalized human cervical cells significantly abolished cell proliferation. Taken together, these data support AIB1 as a novel target of HPV E6 and a biomarker of cervical cancer progression.
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Affiliation(s)
- Jonathan Miller
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Aleksandra Dakic
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Megan Spurgeon
- McArdle Laboratory for Cancer Research, Department of OncologyUniversity of Wisconsin‐Madison School of Medicine and Public HealthMadisonWisconsinUSA
| | - Francisco Saenz
- Department of Oncology, Lombardi Comprehensive Cancer CenterGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Bhaskar Kallakury
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Bo Zhao
- Department of Medicine, Brigham and Women's HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Junran Zhang
- Department of Radiation Oncology, Wexner Medical CenterThe Ohio State UniversityColumbusOhioUSA
- The James Comprehensive Cancer CenterThe Ohio State UniversityColumbusOhioUSA
| | - Jian Zhu
- Department of Pathology, Wexner Medical CenterThe Ohio State UniversityColumbusOhioUSA
| | - Qin Ma
- The James Comprehensive Cancer CenterThe Ohio State UniversityColumbusOhioUSA
- Department of Biomedical Informatics, College of MedicineThe Ohio State UniversityColumbusOhioUSA
| | - Ying Xu
- Computational Systems Biology Lab, Department of Biochemistry and Molecular Biology and Institute of BioinformaticsThe University of GeorgiaAthensGeorgiaUSA
| | - Paul Lambert
- McArdle Laboratory for Cancer Research, Department of OncologyUniversity of Wisconsin‐Madison School of Medicine and Public HealthMadisonWisconsinUSA
| | - Richard Schlegel
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Anna T. Riegel
- Department of Oncology, Lombardi Comprehensive Cancer CenterGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
| | - Xuefeng Liu
- Department of Pathology, Center for Cell ReprogrammingGeorgetown University Medical SchoolWashingtonDistrict of ColumbiaUSA
- The James Comprehensive Cancer CenterThe Ohio State UniversityColumbusOhioUSA
- Department of Pathology, Wexner Medical CenterThe Ohio State UniversityColumbusOhioUSA
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4
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Diao L, Li Y, Mei Q, Han W, Hu J. Retracted: AIB1 induces epithelial-mesenchymal transition in gastric cancer via the PI3K/AKT signaling. J Cell Biochem 2021; 122:926-933. [PMID: 31692102 DOI: 10.1002/jcb.29530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/10/2019] [Indexed: 01/25/2023]
Abstract
Amplified in breast cancer 1 (AIB1) is overexpression in various cancers and promotes tumor cell proliferation, survival, and invasiveness. However, the role of AIB1 in the regulation of gastric cancer (GC) cell epithelial-mesenchymal transition (EMT) is still largely unclear. In the present study, immunohistochemistry showed that AIB1 was upregulated in our cohort of patients with GC and correlated with poor survival. Knockdown of AIB1 reduced the invasive ability of GC cells, downregulated the expression of epithelial cell marker E-cadherin, and upregulated mesenchymal cell marker vimentin. AIB1 overexpression elicited the opposite effect. PI-103, the inhibitor of the PI3K/AKT signaling, partially reversed AIB1 overexpression mediated a decrease in E-cadherin and an increase in vimentin. The present data demonstrated that AIB1 augmented the EMT via activation of PI3K/AKT signaling. In conclusion, our results suggested a novel role of AIB1 in GC invasion and EMT and raised the possibility of using this molecule as an indicator for GC treatment.
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Affiliation(s)
- Lei Diao
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yang Li
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Qiao Mei
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wei Han
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jing Hu
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
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5
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Li L, Deng CX, Chen Q. SRC-3, a Steroid Receptor Coactivator: Implication in Cancer. Int J Mol Sci 2021; 22:4760. [PMID: 33946224 DOI: 10.3390/ijms22094760] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 02/07/2023] Open
Abstract
Steroid receptor coactivator-3 (SRC-3), also known as amplified in breast cancer 1 (AIB1), is a member of the SRC family. SRC-3 regulates not only the transcriptional activity of nuclear receptors but also many other transcription factors. Besides the essential role of SRC-3 in physiological functions, it also acts as an oncogene to promote multiple aspects of cancer. This review updates the important progress of SRC-3 in carcinogenesis and summarizes its mode of action, which provides clues for cancer therapy.
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Jahangiri R, Mosaffa F, Emami Razavi A, Teimoori-Toolabi L, Jamialahmadi K. PAX2 promoter methylation and AIB1 overexpression promote tamoxifen resistance in breast carcinoma patients. J Oncol Pharm Pract 2021; 28:310-325. [PMID: 33509057 DOI: 10.1177/1078155221989404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
INTRODUCTION Disease recurrence is an important obstacle in estrogen receptor positive (ER+) tamoxifen treated breast carcinoma patients. Tamoxifen resistance-related molecular mechanisms are not fully understood. Alteration in DNA methylation which contributes to transcriptional regulation of cancer-related genes plays a crucial role in tamoxifen response. In the present study, the contribution of promoter methylation and mRNA expression of PAX2 and AIB1 in the development of breast carcinoma and tamoxifen refractory was assessed. METHODS Methylation specific-high resolution melting (MS-HRM) analysis and Real-time quantitative PCR (RT-qPCR) experiment were performed to analyze the promoter methylation and mRNA expression levels of PAX2 and AIB1 genes in 102 breast tumors and adjacent normal breast specimens. RESULTS We indicated that PAX2 expression is decreased in breast tissues due to hypermethylation in its promoter region. Compared to the adjacent normal tissues, the tumors exhibited significantly lower relative mRNA levels of PAX2 and increased expression of AIB1. Aberrant promoter methylation of PAX2 and overexpression of AIB1 was observed in tamoxifen resistance patients compared to the sensitive ones. Cox regression analysis exhibited that the increased promoter methylation status of PAX2 and overexpression of AIB1 remained as unfavorable identifiers which influence patients' survival independently. CONCLUSIONS Our results revealed that the aberration in PAX2 promoter methylation and AIB1 overexpression are associated with the tamoxifen response in breast carcinoma patients. Further research is needed to demonstrate the potential of using PAX2 and AIB1 expression and their methylation-mediated regulation as predictive or prognostic biomarkers or as a new target therapy for better disease management.
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Affiliation(s)
- Rosa Jahangiri
- Department of Medical Biotechnology and Nanotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Mosaffa
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | | | - Khadijeh Jamialahmadi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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7
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Li L, Bao J, Wang H, Lei JH, Peng C, Zeng J, Hao W, Zhang X, Xu X, Yu C, Deng CX, Chen Q. Upregulation of amplified in breast cancer 1 contributes to pancreatic ductal adenocarcinoma progression and vulnerability to blockage of hedgehog activation. Theranostics 2021; 11:1672-1689. [PMID: 33408774 PMCID: PMC7778610 DOI: 10.7150/thno.47390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 10/19/2020] [Indexed: 12/13/2022] Open
Abstract
Background: Pancreatic ductal adenocarcinoma (PDAC) is one of the most aggressive and devastating cancers without effective treatments. Amplified in breast cancer 1 (AIB1) is a member of the steroid receptor coactivator family that mediates the transcriptional activities of nuclear receptors. While AIB1 is associated with the initiation and progression of multiple cancers, the mechanism by which AIB1 contributes to PDAC progression remains unknown. In this study, we aimed to explore the role of AIB1 in the progression of PDAC and elucidate the underlying mechanisms. Methods: The clinical significance and mRNA level of AIB1 in PDAC were studied by database analysis. To demonstrate whether AIB1 mediates the malignant features of PDAC cells, namely, proliferation, migration, invasion, we performed real-time PCR and Western blot analysis, established xenograft models and used in vivo metastasis assay. With insights into the mechanism of AIB1, we performed RNA sequencing (Seq), ChIP-Seq, luciferase reporter assays and pull-down assays. Furthermore, we analyzed the relationship between AIB1 expression and its target expression in PDAC cells and patients and explored whether PDAC cells with high AIB1 levels are sensitive to inhibitors of its target. Results: We found that AIB1 was significantly upregulated in PDAC and associated with its malignancy. Silencing AIB1 impaired hedgehog (Hh) activation by reducing the expression of smoothened (SMO), leading to cell cycle arrest and the inhibition of PDAC cell proliferation. In addition, AIB1, via upregulation of integrin αv (ITGAV) expression, promoted extracellular matrix (ECM) signaling, which played an important role in PDAC progression. Further studies showed that AIB1 preferably bound to AP-1 related elements and served as a coactivator for enhancing the transcriptional activity of MafB, which promoted the expression of SMO and ITGAV. PDAC cells with high AIB1 levels were sensitive to Hh signaling inhibitors, suggesting that blocking Hh activation is an effective treatment against PDAC with high AIB1 expression. Conclusions: These findings reveal that AIB1 is a crucial oncogenic regulator associated with PDAC progression via Hh and ECM signaling and suggest potential therapeutic targets for PDAC treatment.
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Affiliation(s)
- Licen Li
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Jiaolin Bao
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Haitao Wang
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Josh Haipeng Lei
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Cheng Peng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Jianming Zeng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Wenhui Hao
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Xu Zhang
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Xiaoling Xu
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Chundong Yu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian, 361012, China
| | - Chu-Xia Deng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Qiang Chen
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Centre for Precision Medicine Research and Training, Faculty of Health Sciences, University of Macau, Macau SAR, China
- Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
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8
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Kushner MH, Ory V, Graham GT, Sharif GM, Kietzman WB, Thevissen S, Yuan M, Schmidt MO, Wellstein A, Riegel AT. Loss of ANCO1 repression at AIB1/YAP targets drives breast cancer progression. EMBO Rep 2020; 21:e48741. [PMID: 31788936 PMCID: PMC6945057 DOI: 10.15252/embr.201948741] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 10/28/2019] [Accepted: 11/12/2019] [Indexed: 02/06/2023] Open
Abstract
Transcription factors critical for the transition of normal breast epithelium to ductal carcinoma in situ (DCIS) and invasive breast cancer are not clearly defined. Here, we report that the expression of a subset of YAP-activated and YAP-repressed genes in normal mammary and early-stage breast cancer cells is dependent on the nuclear co-activator AIB1. Gene expression, sequential ChIP, and ChIP-seq analyses show that AIB1 and YAP converge upon TEAD for transcriptional activation and repression. We find that AIB1-YAP repression of genes at the 1q21.3 locus is mediated by AIB1-dependent recruitment of ANCO1, a tumor suppressor whose expression is progressively lost during breast cancer progression. Reducing ANCO1 reverts AIB1-YAP-dependent repression, increases cell size, and enhances YAP-driven aberrant 3D growth. Loss of endogenous ANCO1 occurs during DCIS xenograft progression, a pattern associated with poor prognosis in human breast cancer. We conclude that increased expression of AIB1-YAP co-activated targets coupled with a loss of normal ANCO1 repression is critical to patterns of gene expression that mediate malignant progression of early-stage breast cancer.
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Affiliation(s)
- Max H Kushner
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - Virginie Ory
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - Garrett T Graham
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - Ghada M Sharif
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - William B Kietzman
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - Sophia Thevissen
- Department of Molecular MedicineGoethe UniversityFrankfurt am MainGermany
| | - Meng Yuan
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - Marcel O Schmidt
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - Anton Wellstein
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
| | - Anna T Riegel
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDCUSA
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9
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Huang Y, Cen J, Wei J, Chen Z, Fang Y, Feng Z, Lu J, Liang Y, Luo J, Mo C, Chen W. Impact of AIB1 expression on the prognosis of upper tract urothelial carcinoma after radical nephroureterectomy. Cancer Biomark 2019; 25:151-160. [PMID: 31045512 DOI: 10.3233/cbm-182020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Amplified in breast cancer 1 (AIB1) is a candidate oncogene in human breast cancer, which has been identified to be amplified and overexpressed in several types of other human cancers. Abnormalities of AIB1 and its clinical/prognostic significance, however, in upper tract urothelial carcinoma (UTUC) remain unclear. OBJECTIVE To explore what role AIB1 plays in upper tract urothelial carcinoma. METHODS The expression of AIB1 was analyzed using immunohistochemical staining in 133 UTUC patients. Overall, cancer specific and recurrence-free survival rates (OS, CSS, and RFS) were estimated using the Kaplan-Meier method. Multivariable COX regression models containing relevant clinicopathological variables addressed the prediction of postoperative outcome. RESULTS High AIB1 expression was observed to be associated with increased hazard ratios for 5-year CSS (80.6% vs. 55.8%, p= 0.008) and OS (78.1% vs. 54.8%, p= 0.006). Multivariable analysis revealed that elevated AIB1 expression was an independent prognostic predictor of OS, CSS and RFS. Additionally, pT, pN and hydronephrosis were independently associated with oncologic outcome of UTUC. Three proposed nomograms were proposed to provide an individualized risk estimate of postoperative outcome in patients with UTUC. CONCLUSIONS AIB1 can be used as an independent molecular marker for the prognosis of clinical outcomes of UTUC.
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Affiliation(s)
- Yong Huang
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,The Department of Emergency, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Junjie Cen
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Jinhuan Wei
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Zhenhua Chen
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Yong Fang
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.,The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Zihao Feng
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Jun Lu
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Yanping Liang
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Junhang Luo
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Chengqiang Mo
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Wei Chen
- The Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
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10
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Beltrán-Gastélum M, Esteban-Fernández de Ávila B, Gong H, Venugopalan PL, Hianik T, Wang J, Subjakova V. Rapid Detection of AIB1 in Breast Cancer Cells Based on Aptamer-Functionalized Nanomotors. Chemphyschem 2019; 20:3177-3180. [PMID: 31639248 DOI: 10.1002/cphc.201900844] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/15/2019] [Indexed: 01/29/2023]
Abstract
Herein, we report ultrasound-propelled graphene-oxide coated gold nanowire motors, functionalized with fluorescein-labeled DNA aptamers (FAM-AIB1-apt), for qualitative detection of overexpressed AIB1 oncoproteins in MCF-7 breast cancer cells. The movement of nanomotors under the ultrasound field facilitated intracellular uptake and resulted in a faster aptamer binding with the target protein and thus faster fluorescence recovery. The propulsion behavior of the aptamer functionalized nanomotors greatly enhanced the fluorescence intensity compared to static conditions. The new aptamer@nanomotor-based strategy offers considerable potential for further development of sensing methodologies towards diagnosis of breast cancer.
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Affiliation(s)
- Mara Beltrán-Gastélum
- Department of Nanoengineering, University of California San Diego, La Jolla, California, 92093, United States
| | | | - Hua Gong
- Department of Nanoengineering, University of California San Diego, La Jolla, California, 92093, United States
| | - Pooyath Lekshmy Venugopalan
- Department of Nanoengineering, University of California San Diego, La Jolla, California, 92093, United States
| | - Tibor Hianik
- Department of Nuclear Physics and Biophysics Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina F1, 842 48, Bratislava, Slovakia
| | - Joseph Wang
- Department of Nanoengineering, University of California San Diego, La Jolla, California, 92093, United States
| | - Veronika Subjakova
- Department of Nanoengineering, University of California San Diego, La Jolla, California, 92093, United States
- Department of Nuclear Physics and Biophysics Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina F1, 842 48, Bratislava, Slovakia
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11
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De Amicis F, Chiodo C, Morelli C, Casaburi I, Marsico S, Bruno R, Sisci D, Andò S, Lanzino M. AIB1 sequestration by androgen receptor inhibits estrogen-dependent cyclin D1 expression in breast cancer cells. BMC Cancer 2019; 19:1038. [PMID: 31684907 PMCID: PMC6829973 DOI: 10.1186/s12885-019-6262-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 10/15/2019] [Indexed: 12/16/2022] Open
Abstract
Background Androgens, through their own receptor, play a protective role on breast tumor development and progression and counterbalance estrogen-dependent growth stimuli which are intimately linked to breast carcinogenesis. Methods Cell counting by trypan blu exclusion was used to study androgen effect on estrogen-dependent breast tumor growth. Quantitative Real Time RT–PCR, western blotting, transient transfection, protein immunoprecipitation and chromatin immunoprecipitation assays were carried out to investigate how androgen treatment and/or androgen receptor overexpression influences the functional interaction between the steroid receptor coactivator AIB1 and the estrogen- or androgen receptor which, in turn affects the estrogen-induced cyclin D1 gene expression in MCF-7 breast cancer cells. Data were analyzed by ANOVA. Results Here we demonstrated, in estrogen receptor α (ERα)-positive breast cancer cells, an androgen-dependent mechanism through which ligand-activated androgen receptor (AR) decreases estradiol-induced cyclin D1 protein, mRNA and gene promoter activity. These effects involve the competition between AR and ERα for the interaction with the steroid receptor coactivator AIB1, a limiting factor in the functional coupling of the ERα with the cyclin D1 promoter. Indeed, AIB1 overexpression is able to reverse the down-regulatory effects exerted by AR on ERα-mediated induction of cyclin D1 promoter activity. Co-immunoprecipitation studies indicated that the preferential interaction of AIB1 with ERα or AR depends on the intracellular expression levels of the two steroid receptors. In addition, ChIP analysis evidenced that androgen administration decreased E2-induced recruitment of AIB1 on the AP-1 site containing region of the cyclin D1 gene promoter. Conclusions Taken together all these data support the hypothesis that AIB1 sequestration by AR may be an effective mechanism to explain the reduction of estrogen-induced cyclin D1 gene activity. In estrogen-dependent breast cancer cell proliferation, these findings reinforce the possibility that targeting AR signalling may potentiate the effectiveness of anti-estrogen adjuvant therapies.
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Affiliation(s)
- Francesca De Amicis
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
| | - Chiara Chiodo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
| | - Catia Morelli
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
| | - Ivan Casaburi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
| | - Stefania Marsico
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
| | - Rosalinda Bruno
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
| | - Diego Sisci
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy.
| | - Sebastiano Andò
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
| | - Marilena Lanzino
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, CS, 87036, Arcavacata di Rende, Italy
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12
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Zhao Z, Zhou S, Li W, Zhong F, Zhang H, Sheng L, Li Y, Xu M, Xu J, Zhan L, Li B, Wang F, Xie D, Tong Z. AIB1 predicts tumor response to definitive chemoradiotherapy and prognosis in cervical squamous cell carcinoma. J Cancer 2019; 10:5212-5222. [PMID: 31602272 PMCID: PMC6775615 DOI: 10.7150/jca.31697] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 07/27/2019] [Indexed: 12/16/2022] Open
Abstract
Amplified in breast cancer 1 (AIB1) gene, has been reported to be associated with biological malignancy in several cancers. However, the molecular status of the AIB1 gene in cervical cancer and the clinicopathological/prognostic significance of AIB1 expression in chemoradiotherapy (CRT) sensitivity have not been determined. In our present study, we found that the high expression of AIB1 was frequent detected in specimens of cervical cancer patients, and this was significantly correlated with CRT response (P = 0.014), clinical stage (P = 0.003), T status (P = 0.027), N status (P = 0.021), M status (P = 0.015) and progression-free survival (P < 0.001). Moreover, the clonogenic survival fraction and cell apoptosis experiments showed that knockdown of AIB1 substantially increased cervical cancer cells sensitivity to ionizing radiation (IR) or cisplatin/5-fluorouracil. Collectively, our results demonstrated that the high expression of AIB1 in cervical cancer cells contributes to the resistance to CRT, which provides the evidence that AIB1 may be a promising predictor of aggressive cervical cancer patients with poor response to CRT.
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Affiliation(s)
- Zhenfeng Zhao
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Department of Radiation Oncology, The Fourth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shuguang Zhou
- Department of Gynecology, Maternity and Child Healthcare Hospital of Anhui Medical University, Hefei, China
| | - Wenyu Li
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Fei Zhong
- Department of Oncology, Fuyang Hospital of Anhui Medical University, Fuyang, Anhui, China
| | - Heping Zhang
- Department of Pathology, Maternity and Child Healthcare Hospital of Anhui Medical University, Hefei, China
| | - Lei Sheng
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yue Li
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Meng Xu
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jifei Xu
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Lei Zhan
- Pathology Department of Anhui Medical University, Hefei, China
| | - Bao Li
- The Comprehensive Lab, College of Basic medicine, Anhui Medical University, Hefei, China
| | - Fan Wang
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Dan Xie
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Zhuting Tong
- Department of Radiation Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
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13
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Truong TH, Lange CA, Ostrander JH. Targeting steroid receptor co-activators to inhibit breast cancer stem cells. Oncoscience 2018; 5:281-2. [PMID: 30652114 DOI: 10.18632/oncoscience.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 08/02/2018] [Indexed: 11/28/2022] Open
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14
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Huang Y, Wei J, Fang Y, Chen Z, Cen J, Feng Z, Lu J, Liang Y, Luo J, Chen W. Prognostic value of AIB1 and EIF5A2 in intravesical recurrence after surgery for upper tract urothelial carcinoma. Cancer Manag Res 2018; 10:6997-7011. [PMID: 30588104 PMCID: PMC6298448 DOI: 10.2147/cmar.s185392] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Objectives The aim of this study was to investigate the prognostic effect of amplified in AIB1 and EIF5A2 expression on postoperative intravesical recurrence for upper urinary tract urothelial carcinoma (UTUC) and improve postoperative risk stratification and prediction of intravesical chemotherapy benefit. Materials and methods We evaluated immunohistochemical expression of AIB1 and EIF5A2 in 109 UTUC patients to determine the predictive significance in intravesical recurrence. A prognostic model was developed based on univariate and multivariate analyses. Results Intravesical recurrence occurred in 18 out of the 109 (16.5%) patients during the follow-up period. Significant associations of high expression of AIB1 and EIF5A2 with shortened bladder recurrence interval (median: 24 months vs 46 months, P=0.021; 28 months vs 39 months, P=0.002) were demonstrated. In different subsets of UTUC patients, high expression of AIB1 was a prognostic indicator in high grade (P=0.006) and pT2–4 (P=0.007), and high expression of EIF5A2 for high grade (P=0.014), pT2–4 (P=0.002) and pN0 (P=0.009). Moreover, in multivariate analysis, AIB1 and EIF5A2 expression (P=0.034 and 0.022, respectively) together with pN stage (P=0.009) provided significant independent predictors for intravesical recurrence after surgery for UTUC. Surgical approach with radical nephroureterectomy (RNU) was an informative factor toward good oncologic outcomes for intravesical recurrence (P=0.056). Based on a prognostic model with these factors, patients with UTUC were classified into the low-risk group and the high-risk group. In a subset analysis, the patients in the high-risk group were found to have a favorable response to intravesical chemotherapy (P=0.047). A nomogram based on the multivariate analysis was developed to predict intravesical recurrence accurately and guide postoperative intravesical instillations. The concordance index (c-index) of this model was 0.806. Conclusion High expression of AIB1 and EIF5A2 were independent predictors for intravesical recurrence after RNU and might be able to predict which patients benefit from postoperative intravesical chemotherapy.
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Affiliation(s)
- Yong Huang
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China, .,Department of Emergency, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Jinhuan Wei
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Yong Fang
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Zhenhua Chen
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Junjie Cen
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Zihao Feng
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Jun Lu
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Yanping Liang
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Junhang Luo
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
| | - Wei Chen
- Department of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China,
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15
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Li Z, Deng X, Wu G, Qiu R, Ju X, Wang Y, Zhang J. The PI3K and AIB1 interaction is involved in estrogen treated breast cancer cells. Cell Mol Biol (Noisy-le-grand) 2018; 64:65-70. [PMID: 29808803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
AIB1 was involved in the development and progression of breast cancer. Although it was found that AIB1 could be phosphorylated by some kinases including PI3K, the function of AIB1 and AKT interaction in breast cancer is not well defined. MCF-7 cells were transfected with pERE-Luc AKT and/or AIB1 plasmids, and then ERE luciferase activity in presence or absence of estrogen (E2) were measured. Plasmids containing PTEN and an PI3K inhibitor LY294002 were transfected into or treated cells to identify the interaction of PI3K/AKT and activation of AIB1, and examine their roles in cell cycle regulation. The AKT phosphorylation activity was evaluated by kinase assay using H2B as a substrate. The association between A1B1 and pS2 promoter was detected by the Chromatin Immunoprecipitation (ChIP) assay. AIB1 and AKT in the same complex were detected by Pull-down assay. IGF-1 can increase AIB1 recruitment to PS2 and enhance the ER-dependent transcription activity through the PI3K/AKT pathway. AIB1 associate with AKT to regulate cell cycle. The special relations concerning the AIB1 and AKT may arouse some new viewpoints for potential therapeutic targets in breast cancer.
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Affiliation(s)
- Zhixi Li
- Departments of Pediatric Surgery, Hospital of The University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - Xiaogeng Deng
- Departments of Pediatric Surgery, The Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - Gang Wu
- Departments of Hepatobiliary Surgery, Hospital of The University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - Ronglin Qiu
- Departments of Pediatric Surgery, The Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - Xueming Ju
- Departments of Ultrasound, Hospital of The University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - Youyu Wang
- Departments of Thoracic Surgery, Hospital of The University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - Jie Zhang
- Departments of Pediatric Surgery, The Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
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16
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Li M, Wang W, Dan Y, Tong Z, Chen W, Qin L, Liu K, Li W, Mo P, Yu C. Downregulation of amplified in breast cancer 1 contributes to the anti-tumor effects of sorafenib on human hepatocellular carcinoma. Oncotarget 2018; 7:29605-19. [PMID: 27105488 PMCID: PMC5045420 DOI: 10.18632/oncotarget.8812] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 03/28/2016] [Indexed: 01/04/2023] Open
Abstract
Multi-kinase inhibitor sorafenib represents a major breakthrough in the therapy of advanced hepatocellular carcinoma (HCC). Amplified in breast cancer 1 (AIB1) is frequently overexpressed in human HCC tissues and promotes HCC progression. In this study, we investigated the effects of sorafenib on AIB1 expression and the role of AIB1 in anti-tumor effects of sorafenib. We found that sorafenib downregulated AIB1 protein expression by inhibiting AIB1 mRNA translation through simultaneously blocking eIF4E and mTOR/p70S6K/RP-S6 signaling. Knockdown of AIB1 significantly promoted sorafenib-induced cell death, whereas overexpression of AIB1 substantially diminished sorafenib-induced cell death. Downregulation of AIB1 contributed to sorafenib-induced cell death at least in part through upregulating the levels of reactive oxygen species in HCC cells. In addition, resistance to sorafenib-induced downregulation of AIB1 protein contributes to the acquired resistance of HCC cells to sorafenib-induced cell death. Collectively, our study implicates that AIB1 is a molecular target of sorafenib and downregulation of AIB1 contributes to the anti-tumor effects of sorafenib.
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Affiliation(s)
- Ming Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China.,Xiamen City Key Laboratory of Biliary Tract Diseases, Chenggong Hospital of Xiamen University, Xiamen, China.,Engineering Research Center of Molecular Diagnostics, Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, China.,Department of Hepatobiliary Pancreas and Vessel Surgery, Chenggong Hospital of Xiamen University, Xiamen, China
| | - Wei Wang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China.,Engineering Research Center of Molecular Diagnostics, Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yuzhen Dan
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China
| | - Zhangwei Tong
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China
| | - Wenbo Chen
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China
| | - Liping Qin
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China
| | - Kun Liu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China.,Department of Pathology, Chenggong Hospital of Xiamen University, Xiamen, China
| | - Wengang Li
- Xiamen City Key Laboratory of Biliary Tract Diseases, Chenggong Hospital of Xiamen University, Xiamen, China.,Department of Hepatobiliary Pancreas and Vessel Surgery, Chenggong Hospital of Xiamen University, Xiamen, China
| | - Pingli Mo
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China
| | - Chundong Yu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, China.,Xiamen City Key Laboratory of Biliary Tract Diseases, Chenggong Hospital of Xiamen University, Xiamen, China.,Engineering Research Center of Molecular Diagnostics, Ministry of Education, School of Life Sciences, Xiamen University, Xiamen, China
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17
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You D, Zhao H, Wang Y, Jiao Y, Lu M, Yan S. Acetylation Enhances the Promoting Role of AIB1 in Breast Cancer Cell Proliferation. Mol Cells 2016; 39:663-8. [PMID: 27665502 PMCID: PMC5050530 DOI: 10.14348/molcells.2016.2267] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 07/31/2016] [Accepted: 08/03/2016] [Indexed: 11/27/2022] Open
Abstract
The oncogene nuclear receptor coactivator amplified in breast cancer 1 (AIB1) is a transcriptional coactivator, which is overexpressed in various types of human cancers, including breast cancer. However, the molecular mechanisms regulating AIB1 function remain largely unknown. In this study, we present evidence demonstrating that AIB1 is acetylated by MOF in human breast cancer cells. Moreover, we also found that the acetylation of AIB1 enhances its function in promoting breast cancer cell proliferation. We further showed that the acetylation of AIB1 is required for its recruitment to E2F1 target genes by E2F1. More importantly, we found that the acetylation levels of AIB1 are greatly elevated in human breast cancer cells compared with that in non-cancerous cells. Collectively, our results shed light on the molecular mechanisms that regulate AIB1 function in breast cancer.
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Affiliation(s)
- Dingyun You
- Kunming Medical University, Kunming City, Yunnan Province 650500,
China
| | - Hongbo Zhao
- Institute of Molecular and Clinical Medicine, Kunming City, Yunnan Province 650500,
China
| | - Yan Wang
- The second Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province 650500,
China
| | - Yang Jiao
- Institute of Molecular and Clinical Medicine, Kunming City, Yunnan Province 650500,
China
| | - Minnan Lu
- Experiment Center for Medical Science Research, Kunming Medical University, Kunming City, Yunnan Province 650500,
China
| | - Shan Yan
- Institute of Molecular and Clinical Medicine, Kunming City, Yunnan Province 650500,
China
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18
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Zhou BF, Wei JH, Chen ZH, Dong P, Lai YR, Fang Y, Jiang HM, Lu J, Zhou FJ, Xie D, Luo JH, Chen W. Identification and validation of AIB1 and EIF5A2 for noninvasive detection of bladder cancer in urine samples. Oncotarget 2016; 7:41703-41714. [PMID: 27203388 PMCID: PMC5173089 DOI: 10.18632/oncotarget.9406] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 03/28/2016] [Indexed: 11/25/2022] Open
Abstract
We previously demonstrated that amplified in breast cancer 1 (AIB1) and eukaryotic initiation factor 2 (EIF5A2) overexpression was an independent predictor of poor clinical outcomes for patients with bladder cancer (BCa). In this study, we evaluated the usefulness of AIB1 and EIF5A2 alone and in combination with nuclear matrix protein 22 (NMP22) as noninvasive diagnostic tests for BCa. Using urine samples from 135 patients (training set, controls [n = 50] and BCa [n = 85]), we detected the AIB1, EIF5A2, and NMP22 concentrations using enzyme-linked immunosorbent assay. We applied multivariate logistic regression analysis to build a model based on the three biomarkers for BCa diagnosis. The diagnostic accuracy of the three biomarkers and the model were assessed and compared by the area under the curve (AUC) of the receiver operating characteristic. We validated the diagnostic accuracy of these biomarkers and the model in an independent validation cohort of 210 patients. In the training set, urinary concentrations of AIB1, EIF5A2, and NMP22 were significantly elevated in BCa. The AUCs of AIB1, EIF5A2, NMP22, and the model were 0.846, 0.761, 0.794, and 0.919, respectively. The model had the highest diagnostic accuracy when compared with AIB1, EIF5A2, or NMP22 (p < 0.05 for all). The model had 92% sensitivity and 92% specificity. We obtained similar results in the independent validation cohort. AIB1 and EIF5A2 show promise for the noninvasive detection of BCa. The model based on AIB1, EIF5A2, and NMP22 outperformed each of the three individual biomarkers for detecting BCa.
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Affiliation(s)
- Bang-Fen Zhou
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
- Department of Urology, Hainan Provincal Nongken General Hospital, Haikou, Hainan, China
| | - Jin-Huan Wei
- Department of Urology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhen-Hua Chen
- Department of Urology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Pei Dong
- Department of Urology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Ying-Rong Lai
- Department of Pathology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yong Fang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Hui-Ming Jiang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
- Department of Urology, Meizhou People's Hospital, Guangdong, China
| | - Jun Lu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Fang-Jian Zhou
- Department of Urology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Dan Xie
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Jun-Hang Luo
- Department of Urology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Chen
- Department of Urology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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19
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Shi J, Liu W, Sui F, Lu R, He Q, Yang Q, Lv H, Shi B, Hou P. Frequent amplification of AIB1, a critical oncogene modulating major signaling pathways, is associated with poor survival in gastric cancer. Oncotarget 2016; 6:14344-59. [PMID: 25970779 PMCID: PMC4546471 DOI: 10.18632/oncotarget.3852] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 04/17/2015] [Indexed: 11/26/2022] Open
Abstract
Amplified in breast cancer 1 (AIB1) is a member of p160 steroid receptor coactivator (SRC) family that mediates the transcriptional activities of nuclear receptors and other transcription factors. It acts as a major oncogene in diverse cancers, whereas biological function of AIB1 in gastric cancer remains largely unclear. This study was designed to explore the role of AIB1 in gastric tumorigenesis and its potential as a useful prognostic marker and therapeutic target in this cancer. Our data demonstrated that AIB1 was significantly up-regulated in gastric cancer tissues as compared with control subjects. Moreover, AIB1 amplification was found in 47 of 133 (35.3%) gastric cancer cases, but not in control subjects. AIB1 amplification was positively associated with its protein expression, and was significantly correlated with poor patient survival. AIB1 knockdown in gastric cancer cells dramatically inhibited cell proliferation, invasiveness and tumorigenic potential in nude mice, and induced cell cycle arrest and apoptosis. Mechanically, AIB1 promotes gastric cancer cell proliferation, survival and invasiveness through modulating major signaling pathways such as ErbB and Wnt/β-catenin pathways. Collectively, these findings suggest that AIB1 plays an important role in the pathogenesis of gastric cancer and represents a potential prognostic marker and therapeutic target for this cancer.
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Affiliation(s)
- Jing Shi
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Wei Liu
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Fang Sui
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Rong Lu
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Qingyuan He
- Department of Oncology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Qi Yang
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Hongjun Lv
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Bingyin Shi
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
| | - Peng Hou
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, The People's Republic of China
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An Y, Wu J, Yang B, Zhu Z, Gao M, Yu C, Yang CJ. Selection and Application of DNA Aptamer Against Oncogene Amplified in Breast Cancer 1. J Mol Evol 2015; 81:179-85. [PMID: 26458993 DOI: 10.1007/s00239-015-9703-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/02/2015] [Indexed: 10/23/2022]
Abstract
Amplified in breast cancer 1 (AIB1), also known as steroid receptor coactivator 3 (SRC-3), is a transcriptional coactivator that interacts with nuclear receptors and other transcription factors to enhance their effects on target gene transcription. AIB1, which acts as a major oncogene, is highly expressed in many human cancers, and has been demonstrated to be a key regulator for tumor initiation, progression, metastasis, invasion, and survival. Recruitment of the transcriptional factor CBP/p300 by CBP/p300-interaction domain (CID) of AIB1 is essential for its transcriptional activation function. In this research, we isolated a DNA aptamer AY-3 that binds to AIB1-CID from a random oligonucleotide library using in vitro screening technology-Systematic Evolution of Ligands by EXponential enrichment (SELEX). The binding affinity of the aptamer to AIB1-CID fusion protein is in the nanomolar range. More importantly, the aptamer was found to disrupt in the interaction between p300 and AIB1. This aptamer has great potential to serve as a therapeutic agent for cancer by inhibiting the coactivation of AIB1.
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Wargon V, Riggio M, Giulianelli S, Sequeira GR, Rojas P, May M, Polo ML, Gorostiaga MA, Jacobsen B, Molinolo A, Novaro V, Lanari C. Progestin and antiprogestin responsiveness in breast cancer is driven by the PRA/PRB ratio via AIB1 or SMRT recruitment to the CCND1 and MYC promoters. Int J Cancer 2014; 136:2680-92. [PMID: 25363551 DOI: 10.1002/ijc.29304] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 10/16/2014] [Indexed: 01/01/2023]
Abstract
There is emerging interest in understanding the role of progesterone receptors (PRs) in breast cancer. The aim of this study was to investigate the proliferative effect of progestins and antiprogestins depending on the relative expression of the A (PRA) and B (PRB) isoforms of PR. In mifepristone (MFP)-resistant murine carcinomas antiprogestin responsiveness was restored by re-expressing PRA using demethylating agents and histone deacetylase inhibitors. Consistently, in two human breast cancer xenograft models, one manipulated to overexpress PRA or PRB (IBH-6 cells), and the other expressing only PRA (T47D-YA) or PRB (T47D-YB), MFP selectively inhibited the growth of PRA-overexpressing tumors and stimulated IBH-6-PRB xenograft growth. Furthermore, in cells with high or equimolar PRA/PRB ratios, which are stimulated to proliferate in vitro by progestins, and are inhibited by MFP, MPA increased the interaction between PR and the coactivator AIB1, and MFP favored the interaction between PR and the corepressor SMRT. In a PRB-dominant context in which MFP stimulates and MPA inhibits cell proliferation, the opposite interactions were observed. Chromatin immunoprecipitation assays in T47D cells in the presence of MPA or MFP confirmed the interactions between PR and the coregulators at the CCND1 and MYC promoters. SMRT downregulation by siRNA abolished the inhibitory effect of MFP on MYC expression and cell proliferation. Our results indicate that antiprogestins are therapeutic tools that selectively inhibit PRA-overexpressing tumors by increasing the SMRT/AIB1 balance at the CCND1 and MYC promoters.
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Affiliation(s)
- Victoria Wargon
- Laboratory of Hormonal Carcinogenesis, Institute of Experimental Biology and Medicine (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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Girard BJ, Daniel AR, Lange CA, Ostrander JH. PELP1: a review of PELP1 interactions, signaling, and biology. Mol Cell Endocrinol 2014; 382:642-651. [PMID: 23933151 PMCID: PMC3844065 DOI: 10.1016/j.mce.2013.07.031] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 07/29/2013] [Accepted: 07/29/2013] [Indexed: 11/29/2022]
Abstract
Proline, glutamic acid, and leucine rich protein 1 (PELP1) is a large multi-domain protein that has been shown to modulate an increasing number of pathways and biological processes. The first reports describing the cloning and characterization of PELP1 showed that it was an estrogen receptor coactivator. PELP1 has now been shown to be a coregulator for a growing number of transcription factors. Furthermore, recent reports have shown that PELP1 is a member of chromatin remodeling complexes. In addition to PELP1 nuclear functions, it has been shown to have cytoplasmic signaling functions as well. In the cytoplasm PELP1 acts as a scaffold molecule and mediates rapid signaling from growth factor and hormone receptors. PELP1 signaling ultimately plays a role in cancer biology by increasing proliferation and metastasis, among other cellular processes. Here we will review (1) the cloning and characterization of PELP1 expression, (2) interacting proteins, (3) PELP1 signaling, and (4) PELP1-mediated biology.
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Affiliation(s)
- Brian J Girard
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, United States
| | - Andrea R Daniel
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, United States
| | - Carol A Lange
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, United States
| | - Julie H Ostrander
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, United States.
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Weiner M, Skoog L, Fornander T, Nordenskjöld B, Sgroi DC, Stål O. Oestrogen receptor co-activator AIB1 is a marker of tamoxifen benefit in postmenopausal breast cancer. Ann Oncol 2013; 24:1994-9. [PMID: 23670096 PMCID: PMC3718507 DOI: 10.1093/annonc/mdt159] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Background The oestrogen receptor (ER) co-activator amplified in breast cancer 1 (AIB1) has been suggested as a treatment predictive and prognostic marker in breast cancer. Studies have however not been unanimous. Patients and methods AIB1 protein expression was analysed by immunohistochemistry on tissue micro-arrays with tumour samples from 910 postmenopausal women randomised to tamoxifen treatment or no adjuvant treatment. Associations between AIB1 expression, clinical outcome in the two arms and other clinicopathological variables were examined. Results In patients with ER-positive breast cancer expressing low tumour levels of AIB1 (<75%), we found no significant difference in recurrence-free survival (RFS) or breast cancer-specific survival (BCS) between tamoxifen treated and untreated patients. In patients with high AIB1 expression (>75%), there was a significant decrease in recurrence rate (HR 0.40, 95% CI 0.26–0.61, P < 0.001) and breast cancer mortality rate (HR 0.38, 95% CI 0.21–0.69, P = 0.0015) with tamoxifen treatment. In the untreated arm, we found high expression of AIB1 to be significantly associated with lower RFS (HR 1.74, 95% CI 1.20–2.53, P = 0.0038). Conclusion Our results suggest that high AIB1 is a predictive marker of good response to tamoxifen treatment in postmenopausal women and a prognostic marker of decreased RFS in systemically untreated patients.
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Affiliation(s)
- M Weiner
- Division of Oncology, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, County Council of Östergötland, Linköping, Sweden
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Tien JCY, Zhou S, Xu J. The role of SRC-1 in murine prostate cancinogenesis is nonessential due to a possible compensation of SRC-3/ AIB1 overexpression. Int J Biol Sci 2009; 5:256-64. [PMID: 19305643 PMCID: PMC2659009 DOI: 10.7150/ijbs.5.256] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Accepted: 03/11/2009] [Indexed: 01/01/2023] Open
Abstract
The androgen and androgen receptor (AR)-regulated gene expression plays important
roles in normal prostate and prostate cancer development, and AR transcriptional
control of genes is mediated by transcriptional coactivators, including the
three members of the steroid receptor coactivator (SRC) family, SRC-1 (NCOA1),
SRC-2 (TIF2/GRIP1/NCOA2) and SRC-3 (AIB1, ACTR/RAC3/NCOA3).
SRC-1 and SRC-3 are overexpressed in multiple
human endocrine cancers and knockdown of either one of them in prostate cancer
cell lines impedes cellular proliferation. Knockout of SRC-3 in
mice suppresses the progression of spontaneous prostate carcinogenesis. In this
study, we investigated SRC-1 contribution to prostate cancer in
vivo by deleting the SRC-1 gene in TRAMP mice, which
contain the probasin promoter-driven SV40 T/t antigen transgene. In assessing
tumor mass of mice at various ages, we found that initiation and progression of
prostate cancer induced by SV40 T/t antigens were unaltered in
SRC-1-/- mice versus WT
mice. Primary tumor histology and metastasis to distant lymph nodes were also
similar in these mice at all time points assessed. These results demonstrate
that the role of SRC-1 in mouse prostate carcinogenesis is nonessential and
different from the essential contribution of SRC-3 that is required for prostate
cancer progression and metastasis in mice. Interestingly, we observed that
during prostate tumorigenesis SRC-1 expression was relatively
constant, while SRC-3 expression was significantly elevated.
Therefore, the loss of SRC-1 function may be compensated by
SRC-3 overexpression during prostate tumorigenesis in
SRC-1-/- mice.
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Affiliation(s)
- Jean Ching-Yi Tien
- 1. Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, USA
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