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Kuang X, Zhang Z, Li D, Bao W, Pan J, Zhou P, Chen H, Gao Z, Xie X, Yang C, Zhu G, Zhou Z, Tang R, Feng Z, Zhou L, Feng X, Wang L, Yang J, Jiang L. Peptidase inhibitor (PI16) impairs bladder cancer metastasis by inhibiting NF-κB activation via disrupting multiple-site ubiquitination of NEMO. Cell Mol Biol Lett 2023; 28:62. [PMID: 37525118 PMCID: PMC10388466 DOI: 10.1186/s11658-023-00465-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 06/14/2023] [Indexed: 08/02/2023] Open
Abstract
BACKGROUND Bladder cancer (BLCA) is a malignancy that frequently metastasizes and leads to poor patient prognosis. It is essential to understand the molecular mechanisms underlying the progression and metastasis of BLCA and identify potential biomarkers. METHODS The expression of peptidase inhibitor 16 (PI16) was analysed using quantitative PCR, immunoblotting and immunohistochemistry assays. The functional roles of PI16 were evaluated using wound healing, transwell, and human umbilical vein endothelial cell tube formation assays, as well as in vivo tumour models. The effects of PI16 on nuclear factor κB (NF-κB) signalling activation were examined using luciferase reporter gene systems, immunoblotting and immunofluorescence assays. Co-immunoprecipitation was used to investigate the interaction of PI16 with annexin-A1 (ANXA1) and NEMO. RESULTS PI16 expression was downregulated in bladder cancer tissues, and lower PI16 levels correlated with disease progression and poor survival in patients with BLCA. Overexpressing PI16 inhibited BLCA cell growth, motility, invasion and angiogenesis in vitro and in vivo, while silencing PI16 had the opposite effects. Mechanistically, PI16 inhibited the activation of the NF-κB pathway by interacting with ANXA1, which inhibited K63 and M1 ubiquitination of NEMO. CONCLUSIONS These results indicate that PI16 functions as a tumour suppressor in BLCA by inhibiting tumour growth and metastasis. Additionally, PI16 may serve as a potential biomarker for metastatic BLCA.
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Affiliation(s)
- Xiangqin Kuang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
- Department of Medical Imaging, Health Science Center, Hubei Minzu University, Enshi, 445000, China
| | - Zhuojun Zhang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Difeng Li
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
- Department of Pathology, School of Medicine, Women's Hospital, Zhejiang University, 310006, Hangzhou, China
| | - Wenhao Bao
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jinyuan Pan
- Department of Oncology, Huanggang Central Hospital of Yangtze University, Huanggang, 438000, China
| | - Ping Zhou
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Han Chen
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Zhiqing Gao
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xiaoyi Xie
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Chunxiao Yang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Ge Zhu
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China
| | - Zhongqiu Zhou
- Meishan Women and Children's Hospital, Alliance Hospital of West China Second University Hospital, Sichuan University, Meishan, 620000, China
| | - Ruiming Tang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Guangzhou, 511518, China
| | - Zhengfu Feng
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Guangzhou, 511518, China
| | - Lihuan Zhou
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Guangzhou, 511518, China
| | - Xiaoli Feng
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Guangzhou, 511518, China
| | - Lan Wang
- Department of Pathogen Biology and Immunology, School of Basic Courses, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Jianan Yang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China.
- Department of Urologic Oncosurgery, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China.
| | - Lili Jiang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, 510095, China.
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China.
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Li P, Li L, Li Z, Wang S, Li R, Zhao W, Feng Y, Huang S, Li L, Qiu H, Xia S. Annexin A1 promotes the progression of bladder cancer via regulating EGFR signaling pathway. Cancer Cell Int 2022; 22:7. [PMID: 34991599 PMCID: PMC8740017 DOI: 10.1186/s12935-021-02427-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/23/2021] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Bladder cancer (BLCA) is one of the most common malignancies worldwide. One of the main reasons for the unsatisfactory management of BLCA is the complex molecular biological mechanism. Annexin A1 (ANXA1), a Ca2+-regulated phospholipid-binding protein, has been demonstrated to be implicated in the progression and prognosis of many cancers. However, the expression pattern, biological function and mechanism of ANXA1 in BLCA remain unclear. METHODS The clinical relevance of ANXA1 in BLCA was investigated by bioinformatics analysis based on TCGA and GEO datasets. Immunohistochemical (IHC) analysis was performed to detect the expression of ANXA1 in BLCA tissues, and the relationships between ANXA1 and clinical parameters were analyzed. In vitro and in vivo experiments were conducted to study the biological functions of ANXA1 in BLCA. Finally, the potential mechanism of ANXA1 in BLCA was explored by bioinformatics analysis and verified by in vitro and in vivo experiments. RESULTS Bioinformatics and IHC analyses indicated that a high expression level of ANXA1 was strongly associated with the progression and poor prognosis of patients with BLCA. Functional studies demonstrated that ANXA1 silencing inhibited the proliferation, migration, invasion and epithelial-mesenchymal transition (EMT) of BLCA cells in vitro, and suppressed the growth of xenografted bladder tumors in vivo. Mechanistically, loss of ANXA1 decreased the expression and phosphorylation level of EGFR and the activation of downstream signaling pathways. In addition, knockdown of ANXA1 accelerated ubiquitination and degradation of P-EGFR to downregulate the activation of EGFR signaling. CONCLUSIONS These findings indicate that ANXA1 is a reliable clinical predictor for the prognosis of BLCA and promotes proliferation and migration by activating EGFR signaling in BLCA. Therefore, ANXA1 may be a promising biomarker for the prognosis of patients with BLCA, thus shedding light on precise and personalized therapy for BLCA in the future.
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Affiliation(s)
- Piao Li
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Lingling Li
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Zhou Li
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Shennan Wang
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Ruichao Li
- Department of Geriatric, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
| | - Weiheng Zhao
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Yanqi Feng
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Shanshan Huang
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Lu Li
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Hong Qiu
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China
| | - Shu Xia
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jie Fang Avenue, Wuhan, Hubei, 430030, People's Republic of China.
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Jia C, Kong D, Guo Y, Li L, Quan L. Enhanced antitumor effect of combination of annexin A1 knockdown and bortezomib treatment in multiple myeloma in vitro and in vivo. Biochem Biophys Res Commun 2018; 505:720-725. [PMID: 30292410 DOI: 10.1016/j.bbrc.2018.09.140] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 09/20/2018] [Indexed: 12/19/2022]
Abstract
Bortezomib (BTZ) is one of the most frequently used drugs in treatment of multiple myeloma (MM), but drug-resistance often occurs and limits its clinical efficacy. Annexin A1 (ANXA1) is upregulated in MM, and its knockdown enhances chemosensitivity in MM. However, whether ANXA1 inhibition can increase antitumor activity of BTZ in MM cells remains unknown. In the present study, Cell Counting Kit-8 (CCK-8) and colony formation assays showed that ANXA1 silencing combined with BTZ treatment led to a more significant inhibition of MM cell proliferation than each treatment alone. Cell apoptosis was dramatically promoted in MM cells following silencing of ANXA1 and BTZ administration versus that in ANXA1-silenced alone or BTZ-treated alone cells, as evidenced by decreased expression of phosphorylated signal transducers and activators of transcription 3 and BCL2, and increased expression of BAX. Moreover, we demonstrated that the levels of IL-6 and IL-23 were markedly downregulated in ANXA1-silenced and BTZ-treated MM cells. Furthermore, the combination of ANXA1 knockdown and BTZ treatment distinctly suppressed tumor growth in vivo compared with BTZ treatment alone. Taken together, our results show that downregulation of ANXA1 enhances antitumor activity of BTZ in MM in vitro and in vivo, indicating that ANXA1 may be a promising target for enhancing the chemosensitivity of MM to BTZ.
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Affiliation(s)
- Chuiming Jia
- Department of Hematology, Harbin Medical University Cancer Hospital, Harbin, 150001, People's Republic of China
| | - Dejuan Kong
- Department of Hematology, Harbin Medical University Cancer Hospital, Harbin, 150001, People's Republic of China
| | - Yiwei Guo
- Department of Hematology, Harbin Medical University Cancer Hospital, Harbin, 150001, People's Republic of China
| | - Lianqiao Li
- Department of Hematology, Harbin Medical University Cancer Hospital, Harbin, 150001, People's Republic of China
| | - Lina Quan
- Department of Hematology, Harbin Medical University Cancer Hospital, Harbin, 150001, People's Republic of China.
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Annexin A1 in malignant tumors: current opinions and controversies. Int J Biol Markers 2014; 29:e8-20. [PMID: 24242295 DOI: 10.5301/jbm.5000046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2013] [Indexed: 12/25/2022]
Abstract
Annexin A1 is a 37 kDa calcium and phospholipid-binding protein that participates in several biological processes, such as inflammatory reactions, modulation of cell proliferation, regulation of cell death signaling, apoptosis, and, most importantly, tumor formation and development. Although annexin A1 has been implicated in the biology of various tumors, the findings are highly controversial and information regarding the underlying mechanism remains limited. Moreover, the mechanism by which annexin A1 participates in carcinogenesis and tumor progression is rather unclear. In the current study, we review the important biological functions of annexin A1 in different tumors. This work indicates that annexin A1 is a possible target for novel therapeutic intervention and that it is a potential biomarker for tumor diagnosis and screening.
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Hirata F, Harada T, Corcoran GB, Hirata A. Dietary flavonoids bind to mono-ubiquitinated annexin A1 in nuclei, and inhibit chemical induced mutagenesis. Mutat Res 2014; 759:29-36. [PMID: 24269256 DOI: 10.1016/j.mrfmmm.2013.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 11/09/2013] [Indexed: 06/02/2023]
Abstract
In order to investigate the mechanisms of anti-mutagenic action by dietary flavonoids, we investigated if they inhibit mutation of the thymidine kinase (tk) gene in L5178Ytk(±) lymphoma cells. Silibinin, quercetin and genistein suppressed mutation of the tk gene induced in L5178Ytk(±) lymphoma cells by methyl methanesulfonate (MMS) and As(3+). Flavone and flavonol were less effective. To establish that mutation of the tk gene in L5178Ytk(±) lymphoma cells by MMS and As(3+) is mediated through mono-ubiquitinated annexin A1, L5178Ytk(±) lymphoma cells were treated with annexin A1 anti-sense oligonucleotide. The treatment reduced mRNA as well as protein levels of annexin A1, and suppressed mutation of the tk gene. Nuclear extracts from L5178Ytk(±) lymphoma cells catalyzed translesion DNA synthesis with an oligonucleotide template containing 8-oxo-guanosine in an annexin A1 dependent manner. This translesion DNA synthesis was inhibited by the anti-mutagenic flavonoids, silibinin, quercetin and genistein, in a concentration dependent manner, but only slightly by flavone and flavonol. Because these observations implicate involvement of annexin A1 in mutagenesis, we examined if flavonoids suppress nuclear annexin A1 helicase activity. Silibinin, quercetin and genistein inhibited ssDNA binding, DNA chain annealing and DNA unwinding activities of purified nuclear mono-ubiquitinated annexin A1. Flavone and flavonol were ineffective. The apparent direct binding of anti-mutagenic flavonoids to the annexin A1 molecule was supported by fluorescence quenching. Taken together, these findings illustrate that nuclear annexin A1 may be a novel and productive target protein of prevention for DNA damage induced gene mutation, ultimately conferring cancer chemoprevention.
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Affiliation(s)
- Fusao Hirata
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States.
| | - Takasuke Harada
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | - George B Corcoran
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
| | - Aiko Hirata
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, United States
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Abstract
The annexins are a well-known, closely related, multigene superfamily of Ca2+-regulated, phospholipid-dependent, membrane-binding proteins. As a member of the annexins, Anxa1 participates in a variety of important biological processes, such as cellular transduction, membrane aggregation, inflammation, phagocytosis, proliferation, differentiation and apoptosis. Accumulated evidence has indicated that Anxa1 deregulations are associated with the development, invasion, metastasis, occurrence and drug resistance of cancers. The research evidence in recent years indicates that Anxa1 might specifically function either as a tumor suppressor or a tumor promoter candidate for certain cancers depending on the particular type of tumor cells/tissues. This article summarizes the associations between Anxa1 and malignant tumors, as well as potential action mechanisms. Anxa1 has the potential to be used in the future as a biomarker for the diagnosis, treatment and prognosis of certain tumors.
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Affiliation(s)
- Chunmei Guo
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
| | - Shuqing Liu
- Department of Biochemistry, Dalian Medical University, Dalian 116044, China
| | - Ming-Zhong Sun
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
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Chen CY, Shen JQ, Wang F, Wan R, Wang XP. Prognostic significance of annexin A1 expression in pancreatic ductal adenocarcinoma. Asian Pac J Cancer Prev 2013; 13:4707-12. [PMID: 23167407 DOI: 10.7314/apjcp.2012.13.9.4707] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Annexin A1 is a 37-kDa calcium- and phospholipid-binding protein of the annexin superfamily considered to play an important role in tumorigenesis. However, associations with clinicopathological features in pancreatic ductal adenocarcinoma (PDAC) cases have yet to be fully defined. We therefore investigated the prognostic value of annexin A1 protein as a PDAC biomarker in 83 tumor and matched non-cancerous tissues or normal pancreas tissues. Expression was analyzed using real-time RT-PCR, Western blotting and immunohistochemistry. In non-tumor tissue, myoepithelial cells showed no or weak expression of annexin A1 while expression was strong and sometimes even located in the nuclei of endothelial cells in tumor tissue. High expression was significantly associated with advanced stage (P <0.05) and a worse overall survival (P <0.05). These results provide new insights to better understand the role of annexin A1 in PDAC survival, and might be relevant to prediction of prognosis and development of more effective therapeutic strategies aimed at improving survival.
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Affiliation(s)
- Cong-Ying Chen
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Ball GL, McLellan CJ, Bhat VS. Toxicological review and oral risk assessment of terephthalic acid (TPA) and its esters: A category approach. Crit Rev Toxicol 2011; 42:28-67. [PMID: 22050403 DOI: 10.3109/10408444.2011.623149] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Polyethylene terephthalate, a copolymer of terephthalic acid (TPA) or dimethyl terephthalate (DMT) with ethylene glycol, has food, beverage, and drinking water contact applications. Di-2-ethylhexyl terephthalate (DEHT) is a plasticizer in food and drinking water contact materials. Oral reference doses (RfDs) and total allowable concentrations (TACs) in drinking water were derived for TPA, DMT, and DEHT. Category RfD and TAC levels were also established for nine C(1)-C(8) terephthalate esters. The mode of action of TPA, and of DMT, which is metabolized to TPA, involves urinary acidosis, altered electrolyte elimination and hypercalciuria, urinary supersaturation with calcium terephthalate or calcium hydrogen terephthalate, and crystallization into bladder calculi. Weanling rats were more sensitive to calculus formation than dams. Calculi-induced irritation led to bladder hyperplasia and tumors in rats fed 1000 mg/kg-day TPA. The lack of effects at 142 mg/kg-day supports a threshold for urine saturation with calcium terephthalate, a key event for calculus formation. Chronic dietary DMT exposure in rodents caused kidney inflammation, but not calculi. Chronic dietary DEHT exposure caused general toxicity unrelated to calculi, although urine pH was reduced suggesting the TPA metabolite was biologically-active, but of insufficient concentration to induce calculi. Respective oral reference doses of 0.5, 0.5, and 0.2 mg/kg-day and total allowable drinking water concentrations of 3, 3, and 1 mg/L were derived for TPA, DMT, and DEHT. An oral RfD of 0.2 mg/kg-day for the terephthalate category chemicals corresponded to a drinking water TAC of 1 mg/L.
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Lee H, Choi SK, Hong YO, Lee WM, Ko SK, Kim EK, Joo JE. The Expression Pattern of Annexin A1 in Urinary Bladder Urothelial Carcinoma and Its Clinicopathologic Significance. KOREAN JOURNAL OF PATHOLOGY 2011. [DOI: 10.4132/koreanjpathol.2011.45.1.62] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Hojung Lee
- Department of Pathology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Seung Kyu Choi
- Department of Pathology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Young Ok Hong
- Department of Pathology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Won Mi Lee
- Department of Pathology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Sook Kyung Ko
- Department of Pathology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Eun Kyung Kim
- Department of Pathology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Jong Eun Joo
- Department of Pathology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
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Hirata F, Thibodeau LM, Hirata A. Ubiquitination and SUMOylation of annexin A1 and helicase activity. Biochim Biophys Acta Gen Subj 2010; 1800:899-905. [PMID: 20359522 DOI: 10.1016/j.bbagen.2010.03.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 03/22/2010] [Accepted: 03/24/2010] [Indexed: 10/19/2022]
Abstract
BACKGROUND While annexin A1 in nuclei is proposed to be involved in cell transformation, its functions remain poorly understood. Since annexin A1 has the consensus motif, ¹⁶⁰LKRD, for SUMOylation as well as Ks, acceptors for ubiquitination that regulates localization and functions of proteins, we investigated SUMOylation and ubiquitination of annexin A1. METHODS SUMOylation and ubiquitination of bovine annexin A1 were biochemically tested in vitro by purified proteins, and were confirmed by cell experiments with L5178 lymphoma cells. Effects of the modifications on DNA helicase activity were measured by ssDNA binding activity and by dsDNA unwinding activity. RESULTS SUMOylation of annexin A1 was catalyzed by Ubc9, while its ubiquitination was by Rad6-Rad 18. Ubiquitinated annexin A1 had higher affinity for damaged DNA, and promoted in vitro translesion DNA synthesis by Pol ß. In mouse lymphoma L5178Y tk(+/-) cells, levels of SUMOylated annexin A1 decreased by DNA damaging agents, MMS or As³, whereas those of ubiquitinated annexin A1 increased under the same conditions. CONCLUSION These observations suggest but do not necessarily prove that ubiquitinated annexin A1 in nuclei may be involved in DNA damage response, while SUMOylated annexin A1 functions in proliferation-differentiation. SIGNIFICANCE Ubiquitination of annexin A1 may play an important role in mutagenesis, an initial step of cell transformation.
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Affiliation(s)
- Fusao Hirata
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48202, USA.
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Chen G, Chan FL, Zhang X, Chan PSF. Identification of differently expressed genes in chemical carcinogen-induced rat bladder cancers. ACTA ACUST UNITED AC 2009; 29:220-6. [PMID: 19399409 DOI: 10.1007/s11596-009-0217-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Indexed: 12/21/2022]
Abstract
Possible altered gene expression patterns in bladder tumour carcinogenesis in rat bladder cancers induced by BBN [N-butyl-N-(4-hydroxybutyl)nitrosamine] was examined by cDNA microarray analysis of gene expression profiles. Thirty Sprague-Dawley rats were given drinking water containing 0.05% BBN ad libitum for 24 to 28 weeks. Equal numbers of control rats were given tap water without BBN. After treatment, the rat bladders were excised for RNA extraction and histopathological examinations. Total RNAs were extracted from rat transitional cell carcinoma (TCC) tissues and micro-dissected normal rat bladder epithelia. The atlas glass rat microarray was used, which included oligonucleotides of 1081 rat genes. Some of the up-regulated genes in rat bladder TCCs were further confirmed by Northern blotting. Our results showed that the transcriptions of 30 genes were significantly elevated in the rat bladder TCCs, and these included fly proto-oncogene, Lipocortin 2, COX IV, COX V a, and cathepsin D. Also, 15 genes were significantly down-regulated in the rat bladder TCCs and they included B7.1, TNFr1, APOA1 and VHL. The results of cDNA microarray analysis demonstrated that normal rat bladder epithelia and bladder TCC exhibited different and specific gene statement profiles. The increased expressions of the identified genes may play an important role in the chemically induced bladder carcinogenesis.
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Affiliation(s)
- Guangfu Chen
- Department of Urology, the General Hospital of the Chinese People's Liberation Army, Beijing, 100853, China.
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