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Lin PH, Hsieh CH, Yu KJ, Shao IH, Chuang CK, Hsu T, Weng WH, Pang ST. AP-2α gene deregulation is associated with renal cell carcinoma patient survival. BMC Cancer 2024; 24:966. [PMID: 39112969 PMCID: PMC11304775 DOI: 10.1186/s12885-024-12526-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 06/17/2024] [Indexed: 08/11/2024] Open
Abstract
BACKGROUND Renal cell carcinoma (RCC), one of the most fatal urologic tumors, accounts for approximately 3% of all adult cancers and exhibits a high metastatic index at diagnosis and a high rate of relapse. Radical or partial nephrectomy is a curative option for nonmetastatic RCCs. Targeted therapy has been shown to improve the survival of patients with metastatic RCCs. However, the underlying cellular and molecular events associated with RCC pathogenesis are not well known. METHODS To investigate the clinical role of the transcription factor activator protein (AP)-2α in RCC, methylated CpG island recovery assays and microarray analysis were employed. COBRA and RT‒qPCR assays were performed to assess AP-2α expression in RCC. RESULTS A negative correlation was noted between AP-2α mRNA expression levels and methylation status. Multivariate analyses showed that AP-2α mRNA was a major risk factor not only for overall and disease-free survival in RCC but also for disease-free survival in clear cell RCC. CONCLUSIONS Our results indicated that AP-2α expression was deregulated in RCC and associated with overall patient survival and disease-free survival. Such findings suggest that AP-2α might play an important role in the pathogenesis of RCC.
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Affiliation(s)
- Po-Hung Lin
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, LinKou Branch. No. 5, Fushing St, Taoyuan, 333, Taiwan
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
- Graduate Institute of Clinical Medical Science, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Chin-Hsuan Hsieh
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, LinKou Branch. No. 5, Fushing St, Taoyuan, 333, Taiwan
| | - Kai-Jie Yu
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, LinKou Branch. No. 5, Fushing St, Taoyuan, 333, Taiwan
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
- Department of Chemical Engineering and Biotechnology, Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, 106, Taiwan
| | - I-Hung Shao
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, LinKou Branch. No. 5, Fushing St, Taoyuan, 333, Taiwan
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
- Graduate Institute of Clinical Medical Science, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Cheng-Keng Chuang
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, LinKou Branch. No. 5, Fushing St, Taoyuan, 333, Taiwan
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Todd Hsu
- Institute of Bioscience and Biotechnology, Center of Excellence for Marine Bioenvironment and Biotechnology, National Taiwan Ocean University, Keelung, 202, Taiwan
| | - Wen-Hui Weng
- Department of Chemical Engineering and Biotechnology, Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, 106, Taiwan
| | - See-Tong Pang
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, LinKou Branch. No. 5, Fushing St, Taoyuan, 333, Taiwan.
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
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Šenigl F, Soikkeli A, Prost S, Schatz DG, Slavková M, Hejnar J, Alinikula J. The SV40 virus enhancer functions as a somatic hypermutation-targeting element with potential oncogenic activity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.09.574829. [PMID: 38260396 PMCID: PMC10802419 DOI: 10.1101/2024.01.09.574829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Simian virus 40 (SV40) is a monkey virus associated with several types of human cancers. SV40 is most frequently detected in mesotheliomas, brain and bone tumors and lymphomas, but the mechanism for SV40 tumorigenesis in humans is not clear. SV40 relative Merkel cell polyomavirus (MCPyV) causes Merkel cell carcinoma (MCC) in humans by expressing truncated large tumor antigen (LT) caused by APOBEC cytidine deaminase family enzymes induced mutations. AID (activation-induced cytidine deaminase), a member of the APOBEC family, is the initiator of the antibody diversification process known as somatic hypermutation (SHM) and its aberrant expression and targeting is a frequent source of lymphomagenesis. In this study, we investigated whether AID-induced mutations could cause truncation of SV40 LT. We demonstrate that the SV40 enhancer has strong SHM targeting activity in several cell types and that AID-induced mutations accumulate to SV40 LT in B cells and kidney cells and cause truncated LT expression in B cells. Our results argue that the ability of the SV40 enhancer to target SHM to LT is a potential source of LT truncation events in various cell types that could contribute to carcinogenesis.
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Kawaguchi A, Akiba J, Ogasawara S, Kondo R, Naito Y, Kusano H, Sanada S, Muto I, Nakama T, Yano H. Transcription factor activating enhancer-binding protein 2B expression correlates with invasiveness and prognosis of extramammary Paget's disease. Pathol Res Pract 2023; 242:154309. [PMID: 36689838 DOI: 10.1016/j.prp.2023.154309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 01/06/2023] [Accepted: 01/14/2023] [Indexed: 01/18/2023]
Abstract
BACKGROUND Extramammary Paget's disease (EMPD) is a slowly advancing malignancy that sometimes progresses to the invasion of the dermis, systemic metastases, and death. Although there have been reports that dermal invasion is associated with poor prognosis, no molecular markers of this invasion have been identified thus far. The aim of this study was to identify key molecules for predicting the risk of EMPD dermis invasion. METHOD We performed microarray screening for three cases of in-situ EMPDs, three cases of invasive EMPDs, and three cases of normal epidermis. We identified a molecule that exhibited a stepwise increase in expression. Further, we analyzed 47 cases of EMPD using immunohistochemical staining (IHC) and examined the correlated clinicopathological findings, including prognosis. RESULT We examined molecules that showed stepwise differences with invasion. We focused on transcription factor activating enhancer-binding protein 2 B (TFAP2B). Of the 47 EMPD patients, 38 (80.9 %) and 9 (19.1 %) had low and high TFAP2B expression, respectively. TFAP2B expression was significantly correlated with invasion into the dermis, mass formation, and preoperative lymph node metastasis (p = 0.001, 0.042, and 0.033, respectively). The cumulative postoperative recurrence-free rate in the TFAP2B-high expression group was significantly lower than that in the TFAP2B-low expression group (P < 0.001). In univariate analysis of recurrence-free survival, TFAP2B expression was found to be a significant factor (p = 0.006). CONCLUSION The expression of TFAP2B, which was comprehensively found by microarray screening, may correlate with the invasiveness of EMPD and may be an unfavorable prognostic factor.
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Affiliation(s)
- Aya Kawaguchi
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka, Japan; Department of Dermatology, Kurume University School of Medicine, Kurume, Fukuoka, Japan.
| | - Jun Akiba
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Fukuoka, Japan
| | - Sachiko Ogasawara
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Reiichiro Kondo
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Yoshiki Naito
- Department of Clinical Laboratory Medicine, Kurume University Hospital, Kurume, Fukuoka, Japan
| | - Hironori Kusano
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka, Japan; Department of Clinical Laboratory, National Hospital Organization Kokura Medical Center, Kitakyushu, Fukuoka, Japan
| | - Sakiko Sanada
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Ikko Muto
- Department of Dermatology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Takekuni Nakama
- Department of Dermatology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Hirohisa Yano
- Department of Pathology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
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The regulatory role of AP-2β in monoaminergic neurotransmitter systems: insights on its signalling pathway, linked disorders and theragnostic potential. Cell Biosci 2022; 12:151. [PMID: 36076256 PMCID: PMC9461128 DOI: 10.1186/s13578-022-00891-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 08/28/2022] [Indexed: 11/10/2022] Open
Abstract
AbstractMonoaminergic neurotransmitter systems play a central role in neuronal function and behaviour. Dysregulation of these systems gives rise to neuropsychiatric and neurodegenerative disorders with high prevalence and societal burden, collectively termed monoamine neurotransmitter disorders (MNDs). Despite extensive research, the transcriptional regulation of monoaminergic neurotransmitter systems is not fully explored. Interestingly, certain drugs that act on these systems have been shown to modulate central levels of the transcription factor AP-2 beta (AP-2β, gene: TFAP2Β). AP-2β regulates multiple key genes within these systems and thereby its levels correlate with monoamine neurotransmitters measures; yet, its signalling pathways are not well understood. Moreover, although dysregulation of TFAP2Β has been associated with MNDs, the underlying mechanisms for these associations remain elusive. In this context, this review addresses AP-2β, considering its basic structural aspects, regulation and signalling pathways in the controlling of monoaminergic neurotransmitter systems, and possible mechanisms underpinning associated MNDS. It also underscores the significance of AP-2β as a potential diagnostic biomarker and its potential and limitations as a therapeutic target for specific MNDs as well as possible pharmaceutical interventions for targeting it. In essence, this review emphasizes the role of AP-2β as a key regulator of the monoaminergic neurotransmitter systems and its importance for understanding the pathogenesis and improving the management of MNDs.
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Co-expression of transcription factor AP-2beta (TFAP2B) and GATA3 in human mammary epithelial cells with intense, apicobasal immunoreactivity for CK8/18. J Mol Histol 2021; 52:1257-1264. [PMID: 34117603 PMCID: PMC8616868 DOI: 10.1007/s10735-021-09980-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 05/18/2021] [Indexed: 11/06/2022]
Abstract
AP-2β is a new mammary epithelial differentiation marker and its expression is preferentially retained and enhanced in lobular carcinoma in situ and invasive lobular breast cancer. In normal breast epithelium AP-2β is expressed in a scattered subpopulation of luminal cells. So far, these cells have not been further characterized. Co-expression of AP-2β protein and luminal epithelium markers (GATA3, CK8/18), hormone receptors [estrogen receptor (ER), androgen receptor (AR)] and candidate stem cells markers (CK5/14, CD44) were assessed by double-immunofluorescence staining in normal mammary gland epithelium. The subpopulation of AP-2β-positive mammary epithelial cells showed an almost complete, superimposable co-expression with GATA3 and a peculiar intense, ring-like appearing immunoreactivity for CK8/18. Confocal immunofluorescence microscopy revealed an apicobasal staining for CK8/18 in AP-2β-positive cells, which was not seen in in AP-2β-negative cells. Furthermore, AP-2β-positive displayed a partial co-expression with ER and AR, but lacked expression of candidate stem cell markers CK5/14 and CD44. In summary, AP-2β is a new luminal mammary epithelial differentiation marker, which is expressed in the GATA3-positive subpopulation of luminal epithelial cells. These AP-2β-positive/GATA3-positive cells also show a peculiar CK8/18-expression which may indicate a previously unknown functionally specialized mammary epithelial cell population.
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Raap M, Gierendt L, Kreipe HH, Christgen M. Transcription factor AP-2beta in development, differentiation and tumorigenesis. Int J Cancer 2021; 149:1221-1227. [PMID: 33720400 DOI: 10.1002/ijc.33558] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/15/2021] [Accepted: 02/08/2021] [Indexed: 12/17/2022]
Abstract
To date, the AP-2 family of transcription factors comprises five members. Transcription factor AP-2beta (TFAP2B)/AP-2β was first described in 1995. Several studies indicate a critical role of AP-2β in the development of tissues and organs of ectodermal, neuroectodermal and also mesodermal origin. Germline mutation of TFAP2B is known to cause the Char syndrome, an autosomal dominant disorder characterized by facial dysmorphism, patent ductus arteriosus and anatomical abnormalities of the fifth digit. Furthermore, single-nucleotide polymorphisms in TFAP2B were linked to obesity and specific personality traits. In neoplasias, AP-2β was first described in alveolar rhabdomyosarcoma. Immunohistochemical staining of AP-2β is a recommended ancillary test for the histopathological diagnosis of this uncommon childhood malignancy. In neuroblastoma, AP-2β supports noradrenergic differentiation. Recently, the function of AP-2β in breast cancer (BC) has gained interest. AP-2β is associated with the lobular BC subtype. Moreover, AP-2β controls BC cell proliferation and has a prognostic impact in patients with BC. This review provides a comprehensive overview of the current knowledge about AP-2β and its function in organ development, differentiation and tumorigenesis.
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Affiliation(s)
- Mieke Raap
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Lisa Gierendt
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Hans H Kreipe
- Institute of Pathology, Hannover Medical School, Hannover, Germany
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Zhu M, Zou L, Lu F, Ye L, Su B, Yang K, Lin M, Fu J, Li Y. miR-142-5p promotes renal cell tumorigenesis by targeting TFAP2B. Oncol Lett 2020; 20:324. [PMID: 33123240 PMCID: PMC7583739 DOI: 10.3892/ol.2020.12187] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 06/23/2020] [Indexed: 01/28/2023] Open
Abstract
The transcription factor AP-2 β (TFAP2B) serves an important role in kidney development. MicroRNAs (miRNAs) regulate carcinogenic pathways and have gained increasing attention owing to their association with human clear cell renal cell carcinoma (ccRCC) tumorigenesis. However, whether miRNAs could affect renal cell tumorigenesis by regulating TFAP2B expression has not been identified. The aim of this study was to investigate the effects of miRNA on TFAP2B and its potential role in cell growth, invasion and migration. PCR, western blot and dual luciferase reporter assays were performed to analyze the effects of miR-142-5p on TFAP2B. Furthermore, MTT, flow cytometry, wound healing and Transwell migration assays were used to analyze the effect of miR-142-5p on cell proliferation and migration. The results demonstrated that miR-142-5p targeted TFAP2B and downregulated the expression of TFAP2B at the mRNA and protein levels, promoting cell proliferation and migration in two ccRCC cell lines, 786-O and A-498. This phenomenon supported the theory that miR-142-5p may function as an oncogene in ccRCC. The potential clinical significance of miR-142-5p as a biomarker and a therapeutic target provides rationale for further investigation into miR-142-5p-mediated molecular pathways and how these may be associated with ccRCC development.
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Affiliation(s)
- Maoshu Zhu
- The Central Laboratory, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Liangneng Zou
- Department of Geriatrics, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Fuhua Lu
- Department of Nephrology, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Ling Ye
- Department of Respiratory Medicine, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Bin Su
- Department of Pharmacy Education, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Kaichun Yang
- Department of Emergency, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Minghua Lin
- Department of Pathology, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Jianqian Fu
- Department of Medical Oncology, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
| | - Yongwu Li
- Department of Emergency, The Fifth Hospital of Xiamen, Xiamen, Fujian 361101, P.R. China
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Pellikainen JM, Kosma VM. Activator protein-2 in carcinogenesis with a special reference to breast cancer-A mini review. Int J Cancer 2007; 120:2061-7. [PMID: 17330235 DOI: 10.1002/ijc.22648] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Activator protein-2 (AP-2) transcription factors are involved in the regulation of cell proliferation, differentiation, apoptosis and carcinogenesis. AP-2alpha has been suggested to function as a tumor suppressor in many cancers and AP-2gamma to be a marker of testicular and germ cell malignancies. At least 3 of the 5 AP-2 family members identified to date, AP-2alpha, AP-2beta and AP-2gamma, are known to be expressed in breast tissue and thought to coordinate the growth and development of the breast via regulation of several breast-related genes such as human epidermal growth factor receptor-2 (HER2) and estrogen receptor (ER). The function of AP-2alpha seems to be tumor suppressive in breast tissue, whereas the role of the other AP-2 family members is less well known. In this review, we summarize the current knowledge of AP-2 in carcinogenesis, especially in breast cancer.
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Affiliation(s)
- Johanna M Pellikainen
- Pathology and Forensic Medicine, Institute of Clinical Medicine, University of Kuopio, FIN-70211 Kuopio, Finland
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Ødegaard E, Staff AC, Kaern J, Flørenes VA, Kopolovic J, Tropé CG, Abeler VM, Reich R, Davidson B. The AP-2gamma transcription factor is upregulated in advanced-stage ovarian carcinoma. Gynecol Oncol 2005; 100:462-8. [PMID: 16216317 DOI: 10.1016/j.ygyno.2005.09.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2005] [Revised: 09/01/2005] [Accepted: 09/06/2005] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To analyze the expression of the AP-2gamma transcription factor in ovarian borderline tumors, early-stage ovarian carcinoma and advanced-stage ovarian carcinoma, and to evaluate its prognostic role in advanced-stage tumors. METHODS Sections from 14 normal ovaries, 75 borderline tumors, 22 FIGO stage I invasive ovarian carcinomas, and 306 advanced-stage (FIGO stages II-IV) ovarian carcinomas (42 primary tumors, 62 solid metastases, 202 effusions) were evaluated for expression of the transcription factor AP-2gamma using immunohistochemistry. Sixty-three effusions and two cell lines (SKOV-3 and OVCAR-3) were additionally studied using immunoblotting. The prognostic role of AP-2gamma in advanced-stage carcinomas was analyzed. RESULTS AP-2gamma was detected in the nucleus of tumor cells in 28/75 (37%) borderline tumors, 13/22 (59%) FIGO stage I carcinomas, and 255/306 (83%) advanced-stage carcinomas (P < 0.001, Chi-square test). Benign ovaries were uniformly negative. Expression was largely limited to carcinoma cells in effusions. Solid lesions and effusions from advanced-stage carcinomas showed comparable expression. Immunoblotting showed AP-2gamma expression in 59/61 effusions and both cell lines. AP-2gamma expression did not correlate with survival. CONCLUSIONS AP-2gamma expression is upregulated in advanced-stage ovarian carcinoma compared to early-stage carcinomas, borderline tumors, and the ovarian surface epithelium, and AP-2gamma is specifically localized to cancer cells in effusions, suggesting a role in tumor progression. The lack of predictive value for this transcription factor in advanced-stage disease may be related to its frequent expression.
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Affiliation(s)
- Elin Ødegaard
- Department of Gynecology, Ulleval University Hospital, N-0407 Oslo, Norway
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Leão M, Pavão A, Espinoza V, Taft C, Bulnes E. A multivariate model of chemical carcinogenesis. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.theochem.2004.10.090] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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