1
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Rong Z, Zheng K, Chen J, Jin X. The cross talk of ubiquitination and chemotherapy tolerance in colorectal cancer. J Cancer Res Clin Oncol 2024; 150:154. [PMID: 38521878 PMCID: PMC10960765 DOI: 10.1007/s00432-024-05659-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 02/20/2024] [Indexed: 03/25/2024]
Abstract
Ubiquitination, a highly adaptable post-translational modification, plays a pivotal role in maintaining cellular protein homeostasis, encompassing cancer chemoresistance-associated proteins. Recent findings have indicated a potential correlation between perturbations in the ubiquitination process and the emergence of drug resistance in CRC cancer. Consequently, numerous studies have spurred the advancement of compounds specifically designed to target ubiquitinates, offering promising prospects for cancer therapy. In this review, we highlight the role of ubiquitination enzymes associated with chemoresistance to chemotherapy via the Wnt/β-catenin signaling pathway, epithelial-mesenchymal transition (EMT), and cell cycle perturbation. In addition, we summarize the application and role of small compounds that target ubiquitination enzymes for CRC treatment, along with the significance of targeting ubiquitination enzymes as potential cancer therapies.
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Affiliation(s)
- Ze Rong
- Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China.
| | - Kaifeng Zheng
- Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China
| | - Jun Chen
- Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China.
| | - Xiaofeng Jin
- Department of Chemoradiotherapy, the Affiliated People's Hospital of Ningbo University, Ningbo, 315040, China.
- Department of Biochemistry and Molecular Biology, Health Science Center, Ningbo, 315211, China.
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2
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Hua X, Zou R, Bai X, Yang Y, Lu J, Huang C. Differential functions of RhoGDIβ in malignant transformation and progression of urothelial cell following N-butyl-N-(4-hydmoxybutyl) nitrosamine exposure. BMC Biol 2023; 21:181. [PMID: 37635218 PMCID: PMC10463823 DOI: 10.1186/s12915-023-01683-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 08/15/2023] [Indexed: 08/29/2023] Open
Abstract
BACKGROUND Functional role of Rho GDP-dissociation inhibitor beta (RhoGDIβ) in tumor biology appears to be contradictory across various studies. Thus, the exploration of the molecular mechanisms underlying the differential functions of this protein in urinary bladder carcinogenesis is highly significant in the field. Here, RhoGDIβ expression patterns, biological functions, and mechanisms leading to transformation and progression of human urothelial cells (UROtsa cells) were evaluated following varying lengths of exposure to the bladder carcinogen N-butyl-N-(4-hydmoxybutyl) nitrosamine (BBN). RESULTS It was seen that compared to expression in vehicle-treated control cells, RhoGDIβ protein expression was downregulated after 2-month of BBN exposure, but upregulated after 6-month of exposure. Assessments of cell function showed that RhoGDIβ inhibited UROtsa cell growth in cells with BBN for 2-month exposure, whereas it promoted the invasion of cells treated with BBN for 6 months. Mechanistic studies revealed that 2-month of BBN exposure markedly attenuated DNMT3a abundance, and this led to reduced miR-219a promoter methylation, increased miR-219a binding to the RhoGDIβ mRNA 3'UTR, and reduced RhoGDIβ protein translation. While after 6-mo of BBN treatment, the cells showed increased PP2A/JNK/C-Jun axis phosphorylation and this in turn mediated overall RhoGDIβ mRNA transcription and protein expression as well as invasion. CONCLUSIONS These findings indicate that RhoGDIβ is likely to inhibit the transformation of human urothelial cells during the early phase of BBN exposure, whereas it promotes invasion of the transformed/progressed urothelial cells in the late stage of BBN exposure. The studies also suggest that RhoGDIβ may be a useful biomarker for evaluating the progression of human bladder cancers.
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Affiliation(s)
- Xiaohui Hua
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, People's Republic of China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Ronghao Zou
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, People's Republic of China
| | - Xiaoyue Bai
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, People's Republic of China
| | - Yuyao Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, People's Republic of China
| | - Juan Lu
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, People's Republic of China
| | - Chuanshu Huang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
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3
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Sanya DRA, Onésime D. Roles of non-coding RNAs in the metabolism and pathogenesis of bladder cancer. Hum Cell 2023:10.1007/s13577-023-00915-5. [PMID: 37209205 DOI: 10.1007/s13577-023-00915-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/07/2023] [Indexed: 05/22/2023]
Abstract
Bladder cancer (BC) is featured as the second most common malignancy of the urinary tract worldwide with few treatments leading to high incidence and mortality. It stayed a virtually intractable disease, and efforts to identify innovative and effective therapies are urgently needed. At present, more and more evidence shows the importance of non-coding RNA (ncRNA) for disease-related study, diagnosis, and treatment of diverse types of malignancies. Recent evidence suggests that dysregulated functions of ncRNAs are closely associated with the pathogenesis of numerous cancers including BC. The detailed mechanisms underlying the dysregulated role of ncRNAs in cancer progression are still not fully understood. This review mainly summarizes recent findings on regulatory mechanisms of the ncRNAs, long non-coding RNAs, microRNAs, and circular RNAs, in cancer progression or suppression and focuses on the predictive values of ncRNAs-related signatures in BC clinical outcomes. A deeper understanding of the ncRNA interactive network could be compelling framework for developing biomarker-guided clinical trials.
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Affiliation(s)
- Daniel Ruben Akiola Sanya
- Micalis Institute, Diversité génomique et fonctionnelle des levures, domaine de Vilvert, Université Paris-Saclay, INRAE, AgroParisTech, 78350, Jouy-en-Josas, France.
| | - Djamila Onésime
- Micalis Institute, Diversité génomique et fonctionnelle des levures, domaine de Vilvert, Université Paris-Saclay, INRAE, AgroParisTech, 78350, Jouy-en-Josas, France
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4
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Nunode M, Hayashi M, Nagayasu Y, Sawada M, Nakamura M, Sano T, Fujita D, Ohmichi M. miR-515-5p suppresses trophoblast cell invasion and proliferation through XIAP regulation in preeclampsia. Mol Cell Endocrinol 2023; 559:111779. [PMID: 36155776 DOI: 10.1016/j.mce.2022.111779] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 09/13/2022] [Accepted: 09/18/2022] [Indexed: 02/03/2023]
Abstract
MicroRNAs (miRNAs) are non-coding small RNA molecules that can be secreted into the circulation and which exist in remarkably stable forms. Circulating miRNAs regulate numerous biological process and are aberrantly expressed in pathological conditions. Differentially expressed circulating miRNAs have received attention as potential biomarkers for many diseases. In this study, we revealed that miR-515-5p was significantly upregulated in maternal serum from preeclampsia patients in comparison to normal pregnant women. Bioinformatics prediction and a dual-luciferase reporter gene assay revealed that miR-515-5p directly targets the X-linked inhibitor of apoptosis protein (XIAP) 3'-untranslated region. In addition, the overexpression of miR-515-5p inhibited the proliferation and invasion of HTR-8/SVneo trophoblast cells. The decreased XIAP expression and reduced epithelial-mesenchymal transition (EMT) were observed in the preeclamptic placenta. Collectively, miR-515-5p may play critical roles in the pathogenesis of preeclampsia through suppression of XIAP, and serum miR-515-5p may act as a potential biomarker for preeclampsia.
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Affiliation(s)
- Misa Nunode
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - Masami Hayashi
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan.
| | - Yoko Nagayasu
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - Masami Sawada
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - Mayumi Nakamura
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - Takumi Sano
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - Daisuke Fujita
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
| | - Masahide Ohmichi
- Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University, 2-7 Daigakumachi, Takatsuki, Osaka, 569-8686, Japan
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5
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Coyle R, O'Sullivan MJ, Zisterer DM. Targeting inhibitor of apoptosis proteins (IAPs) with IAP inhibitors sensitises malignant rhabdoid tumour cells to cisplatin. Cancer Treat Res Commun 2022; 32:100579. [PMID: 35613525 DOI: 10.1016/j.ctarc.2022.100579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Malignant rhabdoid tumour (MRT) is a rare, aggressive paediatric malignancy most commonly diagnosed in those below the age of three. MRTs can arise in soft tissue but are more often associated with the central nervous system or kidney. Unfortunately, the prognosis upon diagnosis with MRT is poor. Given the resistance of MRT to current treatment protocols including cisplatin, and the vulnerability of this young patient population to aggressive therapies, there is a need for novel treatment options. Several members of the inhibitor of apoptosis protein (IAP) family including X‑linked inhibitor of apoptosis (XIAP), cellular inhibitor of apoptosis proteins 1 and 2 (cIAP1/cIAP2), livin and survivin have been implicated in chemotherapy resistance in various malignancies. We have previously demonstrated expression of these IAP family members in a panel of MRT cell lines. In the present study, sensitivity of this same panel of MRT cell lines to small-molecule mediated inhibition of the IAPs via the survivin inhibitor YM155 and the XIAP/cIAP1/cIAP2 inhibitor BV6 was demonstrated. Additionally, both BV6 and the XIAP inhibitor embelin synergistically enhanced cisplatin mediated apoptotic cell death in MRT cell lines, with enhanced caspase-3 cleavage. Importantly, we have demonstrated, for the first time, expression of XIAP, its target caspase-3 and its endogenous inhibitor SMAC in rhabdoid tumour patient tissue. In conclusion, this study provides pre-clinical evidence that IAP inhibition may be a new therapeutic option in MRT.
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Affiliation(s)
- Rachel Coyle
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland..
| | - Maureen J O'Sullivan
- The National Children's Research Centre, Children's Health Ireland at Crumlin, Dublin 12, Ireland
| | - Daniela M Zisterer
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
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6
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Subcellular localization of X-linked inhibitor of apoptosis protein (XIAP) in cancer: does that matter? BBA ADVANCES 2022; 2:100050. [PMID: 37082602 PMCID: PMC10074912 DOI: 10.1016/j.bbadva.2022.100050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 02/25/2022] [Accepted: 03/15/2022] [Indexed: 11/20/2022] Open
Abstract
X-linked inhibitor of apoptosis protein (XIAP) finely tunes the balance between survival and death to control homeostasis. XIAP is found aberrantly expressed in cancer, which has been shown to promote resistance to therapy-induced apoptosis and confer poor outcome. Despite its predominant cytoplasmic localization in human tissues, growing evidence implicates the expression of XIAP in other subcellular compartments in sustaining cancer hallmarks. Herein, we review our current knowledge on the prognostic role of XIAP localization and discuss molecular mechanisms underlying differential biological functions played in each compartment. The comprehension of XIAP subcellular shuttling and functional dynamics might provide the rationale for future anticancer therapeutics.
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Xu J, Yang R, Hua X, Huang M, Tian Z, Li J, Lam HY, Jiang G, Cohen M, Huang C. lncRNA SNHG1 Promotes Basal Bladder Cancer Invasion via Interaction with PP2A Catalytic Subunit and Induction of Autophagy. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 21:354-366. [PMID: 32650234 PMCID: PMC7340968 DOI: 10.1016/j.omtn.2020.06.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/15/2020] [Accepted: 06/12/2020] [Indexed: 02/07/2023]
Abstract
Although basal muscle-invasive bladder cancers (MIBCs) are predominant, are more aggressive, and have bad prognoses, molecular mechanisms underlying how basal MIBC formation/progression have been barely explored. In the present study, SNHG1, a long non-coding RNA, was shown to be expressed at higher levels in basal MIBC cells than in other types of bladder BC cells, and its presence could promote basal MIBC cell invasion. The results revealed that SNHG1 specifically induced MMP2 expression via increasing its transcription and mRNA stability. In one mechanism, SNHG1 directly bound with PP2A catalytic subunit (PP2A-c) to inhibit interactions of PP2A-c with c-Jun and then promoted c-Jun phosphorylation that, in turn, mediated MMP2 transcription. In another mechanism, SNHG1 markedly induced autophagy in the cells via induction of increases in the abundance of autophagy-related proteins. The latter initiated autophagy and further abolished miR-34a stability, which reduced overall miR-34a binding directly to the 3' UTR of MMP2 mRNA, thereby promoting MMP2 mRNA stabilization. These results provided novel insight into understanding the specific functions of SNHG1 in basal MIBC. Such findings may ultimately prove highly significant for the design/synthesis of new SNHG1-based compounds for the treatment of basal MIBC patients.
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Affiliation(s)
- Jiheng Xu
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Rui Yang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Xiaohui Hua
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Maowen Huang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Zhongxian Tian
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Jingxia Li
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Hoi Yun Lam
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Guosong Jiang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Mitchell Cohen
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA
| | - Chuanshu Huang
- Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY 10010, USA.
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8
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Jin H, Xue L, Mo L, Zhang D, Guo X, Xu J, Li J, Peng M, Zhao X, Zhong M, Xu D, Wu XR, Huang H, Huang C. Downregulation of miR-200c stabilizes XIAP mRNA and contributes to invasion and lung metastasis of bladder cancer. Cell Adh Migr 2020; 13:236-248. [PMID: 31240993 PMCID: PMC6601559 DOI: 10.1080/19336918.2019.1633851] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Our previous studies have demonstrated that XIAP promotes bladder cancer metastasis through upregulating RhoGDIβ/MMP-2 pathway. However, the molecular mechanisms leading to the XIAP upregulation was unclear. In current studies, we found that XIAP was overexpressed in human high grade BCs, high metastatic human BCs, and in mouse invasive BCs. Mechanistic studies indicated that XIAP overexpression in the highly metastatic T24T cells was due to increased mRNA stability of XIAP that was mediated by downregulated miR-200c. Moreover, the downregulated miR-200c was due to CREB inactivation, while miR-200c downregulation reduced its binding to the 3’-UTR region of XIAP mRNA. Collectively, our results demonstrate the molecular basis leading to XIAP overexpression and its crucial role in BC invasion.
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Affiliation(s)
- Honglei Jin
- a Nelson Institute of Environmental Medicine and Department of Environmental Medicine , New York University School of Medicine , Tuxedo , NY , USA
| | - Lei Xue
- b Department of Thoracic Surgery , Changzheng Hospital, Second Military Medical University , Shanghai , China
| | - Lan Mo
- c Department of Pathology , New York Medical College , Valhalla , NY , USA
| | - Dongyun Zhang
- a Nelson Institute of Environmental Medicine and Department of Environmental Medicine , New York University School of Medicine , Tuxedo , NY , USA
| | - Xirui Guo
- a Nelson Institute of Environmental Medicine and Department of Environmental Medicine , New York University School of Medicine , Tuxedo , NY , USA
| | - Jiheng Xu
- a Nelson Institute of Environmental Medicine and Department of Environmental Medicine , New York University School of Medicine , Tuxedo , NY , USA
| | - Jingxia Li
- a Nelson Institute of Environmental Medicine and Department of Environmental Medicine , New York University School of Medicine , Tuxedo , NY , USA
| | - Minggang Peng
- a Nelson Institute of Environmental Medicine and Department of Environmental Medicine , New York University School of Medicine , Tuxedo , NY , USA
| | - Xuewei Zhao
- b Department of Thoracic Surgery , Changzheng Hospital, Second Military Medical University , Shanghai , China
| | - Minghao Zhong
- c Department of Pathology , New York Medical College , Valhalla , NY , USA
| | - Dazhong Xu
- d Departments of Urology and Pathology , New York University School of Medicine , New York , NY , USA.,e Department of Environmental Medicine , VA Medical Center in Manhattan, New York University , New York , NY , USA
| | - Xue-Ru Wu
- d Departments of Urology and Pathology , New York University School of Medicine , New York , NY , USA.,e Department of Environmental Medicine , VA Medical Center in Manhattan, New York University , New York , NY , USA
| | - Haishan Huang
- f Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences , Wenzhou Medical University , Wenzhou , Zhejiang , China
| | - Chuanshu Huang
- a Nelson Institute of Environmental Medicine and Department of Environmental Medicine , New York University School of Medicine , Tuxedo , NY , USA
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9
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Xue C, Kang B, Su P, Wang D, Zhao F, Zhang J, Wang X, Lang H, Cao Z. MicroRNA-106b-5p participates in lead (Pb 2+)-induced cell viability inhibition by targeting XIAP in HT-22 and PC12 cells. Toxicol In Vitro 2020; 66:104876. [PMID: 32344020 DOI: 10.1016/j.tiv.2020.104876] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 12/25/2022]
Abstract
Previous studies reported perturbed expressing of X-linked inhibitor of apoptosis protein (XIAP) under lead (Pb) exposure. However, researches on XIAP expression mainly focused on its transcriptional and post-translational regulation, rarely involving post-transcriptional mechanism manipulated by certain indispensable microRNAs (miRNAs). Interestingly, we unveiled that miR-106b-5p, a widely expressed miRNA in various tissues, is up-regulated by Pb2+-induced stress. Moreover, we found a binding site for miR-106b-5p in the 3'-UTR of xiap mRNA using bioinformatics analysis, and provided the evidences that miR-106b-5p can interact and function with this regulatory region via luciferase reporter assay. Our results further showed that miR-106b-5p down-regulates XIAP protein level, and suppression of miR-106b-5p reverses the decrease in both XIAP level and cell viability in Pb2+-treated HT-22 and PC12 cells. In brief, we identified a novel function of miR-106b-5p in the post-transcriptional regulation of XIAP expression associated with Pb neurotoxicity.
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Affiliation(s)
- Chong Xue
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China
| | - Beipei Kang
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China; Department of Clinical Laboratory, Xijing Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Peng Su
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China
| | - Diya Wang
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China
| | - Fang Zhao
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China
| | - Jianbin Zhang
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China
| | - Xiaojing Wang
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China; Department of Neurology and Endocrinology, 989 Hospital of PLA, Pingdingshan 467021, China
| | - Haiyang Lang
- School of Public Health, Air Force Military Medical University, Xi'an 710032, China.
| | - Zipeng Cao
- Department of Occupational & Environmental Health and the Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Military Medical University, Xi'an 710032, China.
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10
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Wang X, Tang S, Qin F, Liu Y, Liang Z, Cai H, Mo L, Xiao D, Guo S, Ouyang Y, Sun B, Lu C, Li X. Proteomics and phosphoproteomics study of LCMT1 overexpression and oxidative stress: overexpression of LCMT1 arrests H 2O 2-induced lose of cells viability. Redox Rep 2020; 24:1-9. [PMID: 30898057 PMCID: PMC6748586 DOI: 10.1080/13510002.2019.1595332] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Objectives: Protein phosphatase 2A (PP2A), a major serine/threonine
phosphatase, is also known to be a target of ROS. The methylation of PP2A can be
catalyzed by leucine carboxyl methyltransferase-1 (LCMT1), which regulates PP2A
activity and substrate specificity. Methods: In the previous study, we have showed that LCMT1-dependent
PP2Ac methylation arrests H2O2-induced cell oxidative
stress damage. To explore the possible protective mechanism, we performed
iTRAQ-based comparative quantitative proteomics and phosphoproteomics studies of
H2O2-treated vector control and LCMT1-overexpressing
cells. Results: A total of 4480 non-redundant proteins and 3801 unique
phosphopeptides were identified by this means. By comparing the
H2O2-regulated proteins in LCMT1-overexpressing and
vector control cells, we found that these differences were mainly related to
protein phosphorylation, gene expression, protein maturation, the cytoskeleton
and cell division. Further investigation of LCMT1 overexpression-specific
regulated proteins under H2O2 treatment supported the idea
that LCMT1 overexpression induced ageneral dephosphorylation of proteins and
indicated increased expression of non-erythrocytic hemoglobin, inactivation of
MAPK3 and regulation of proteins related to Rho signal transduction, which were
known to be linked to the regulation of the cytoskeleton. Discussion: These data provide proteomics and phosphoproteomics
insights into the association of LCMT1-dependent PP2Ac methylation and oxidative
stress and indirectly indicate that the methylation of PP2A plays an important
role against oxidative stress.
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Affiliation(s)
- Xinhang Wang
- a School of Preclinical Medicine , Guangxi Medical University , Nanning , People's Republic of China
| | - Shen Tang
- a School of Preclinical Medicine , Guangxi Medical University , Nanning , People's Republic of China
| | - Fu Qin
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China.,c Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases , Guangxi Medical University , Nanning , People's Republic of China
| | - Yuyang Liu
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China.,c Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases , Guangxi Medical University , Nanning , People's Republic of China
| | - Ziwei Liang
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China.,c Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases , Guangxi Medical University , Nanning , People's Republic of China
| | - Haiqing Cai
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China.,c Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases , Guangxi Medical University , Nanning , People's Republic of China
| | - Laiming Mo
- a School of Preclinical Medicine , Guangxi Medical University , Nanning , People's Republic of China
| | - Deqiang Xiao
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China
| | - Songcao Guo
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China
| | - Yiqiang Ouyang
- d Laboratory Animal Centre , Guangxi Medical University , Nanning , People's Republic of China
| | - Bin Sun
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China.,c Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases , Guangxi Medical University , Nanning , People's Republic of China
| | - Cailing Lu
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China.,c Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases , Guangxi Medical University , Nanning , People's Republic of China
| | - Xiyi Li
- b School of Public Health, Guangxi Medical University , Nanning , People's Republic of China.,c Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases , Guangxi Medical University , Nanning , People's Republic of China
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Xu J, Hua X, Yang R, Jin H, Li J, Zhu J, Tian Z, Huang M, Jiang G, Huang H, Huang C. XIAP Interaction with E2F1 and Sp1 via its BIR2 and BIR3 domains specific activated MMP2 to promote bladder cancer invasion. Oncogenesis 2019; 8:71. [PMID: 31811115 PMCID: PMC6898186 DOI: 10.1038/s41389-019-0181-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 11/20/2019] [Accepted: 11/26/2019] [Indexed: 11/09/2022] Open
Abstract
XIAP has generally been thought to function in bladder cancer. However, the potential function of structure-based function of XIAP in human BC invasion has not been well explored before. We show here that ectopic expression of the BIR domains of XIAP specifically resulted in MMP2 activation and cell invasion in XIAP-deleted BC cells, while Src was further defined as an XIAP downstream negative regulator for MMP2 activation and BC cell invasion. The inhibition of Src expression by the BIR domains was caused by attenuation of Src protein translation upon miR-203 upregulation; which was resulted from direct interaction of BIR2 and BIR3 with E2F1 and Sp1, respectively. The interaction of BIR2/BIR3 with E2F1/Sp1 unexpectedly occurred, which could be blocked by serum-induced XIAP translocation. Taken together, our studies, for the first time revealed that: (1) BIR2 and BIR3 domains of XIAP play their role in cancer cell invasion without affecting cell migration by specific activation of MMP2 in human BC cells; (2) by BIR2 interacting with E2F1 and BIR3 interacting with Sp1, XIAP initiates E2F1/Sp1 positive feedback loop-dependent transcription of miR-203, which in turn inhibits Src protein translation, further leading to MMP2-cleaved activation; (3) XIAP interaction with E2F1 and Sp1 is observed in the nucleus. Our findings provide novel insights into understanding the specific function of BIR2 and BIR3 of XIAP in BC invasion, which will be highly significant for the design/synthesis of new BIR2/BIR3-based compounds for invasive BC treatment.
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Affiliation(s)
- Jiheng Xu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Xiaohui Hua
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Rui Yang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Honglei Jin
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Junlan Zhu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Zhongxian Tian
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Maowen Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Guosong Jiang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA
| | - Haishan Huang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, Wenzhou, China.
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10010, USA.
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12
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Zhao Y, Tang X, Huang Y, Tang Q, Ma C, Zheng F, Wu W, Hann SS. Interaction Of c-Jun And HOTAIR- Increased Expression Of p21 Converge In Polyphyllin I-Inhibited Growth Of Human Lung Cancer Cells. Onco Targets Ther 2019; 12:10115-10127. [PMID: 31819506 PMCID: PMC6883933 DOI: 10.2147/ott.s226830] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022] Open
Abstract
Background Lung cancer is a leading cause of cancer-related death worldwide. Previously we demonstrated that polyphyllin I (PPI), a bioactive component extracted from Paris polyphylla, inhibited the growth of non-small cell lung cancer (NSCLC) cells through the SAPK/JNK-mediated suppressing p65, DNMT1 and EZH2 expressions. However, the molecular mechanism underlying anti-lung cancer effect by PPI still remain elusive. Purpose In this current study, we further explored the molecular mechanism underlying the anti-lung cancer effect of PPI. Methods MTT, Cell-LightTM EdU DNA cell proliferation and colony formation assays were used to measure cell growth. Western blot were used to examine protein levels of c-Jun and p21. The expression level of long non-codingth RNA HOX transcript antisense RNA (HOTAIR) was measured by qRT-PCR. The p21 promoter activity was measured by Dual-Luciferase Reporter Assay System. The transient transfection experiments were used to silence and overexpression of c-Jun, p21 and HOTAIR. Tumor xenograft and bioluminescent imaging experiments were carried out to confirm the in vitro findings. Results We showed that PPI suppressed growth of NSCLC cells. Mechanistically, we observed that PPI reduced expression of HOTAIR, while increased transcription factor c-Jun protein levels. Additionally, PPI also induced protein expression and promoter activity of p21, a cyclin-dependent kinase inhibitor. While exogenously expressed HOTAIR showed no effect on c-Jun levels, silencing of c-Jun significantly reversed the PPI-inhibited HOTAIR expression. Moreover, excessive expressed c-Jun further enhanced PPI-inhibited HOTAIR expression and PPI-induced p21 protein levels. Intriguingly, overexpression of HOTAIR and silencing of c-Jun overcame the PPI-induced p21 protein and promoter activity. Finally, silencing of p21 neutralized the PPI-inhibited cell proliferation. Similar results were also found in one xenograft mouse model. Conclusion Our results demonstrate that PPI inhibits growth of NSCLC cells through regulation of HOTAIR and c-Jun expressions, which lead to induction of p21 gene. The interactions among HOTAIR, c-Jun and p21 regulatory axis converge in the overall anti-lung cancer effect of PPI. This study unveils an additional new mechanism for the anti-lung cancer role of PPI.
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Affiliation(s)
- YueYang Zhao
- Laboratory of Tumor Biology.,Department of Hematology
| | | | | | | | | | | | - WanYin Wu
- Department of Medical Oncology, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province 510120, People's Republic of China
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13
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Jiang G, Huang C, Liao X, Li J, Wu XR, Zeng F, Huang C. The RING domain in the anti-apoptotic protein XIAP stabilizes c-Myc protein and preserves anchorage-independent growth of bladder cancer cells. J Biol Chem 2019; 294:5935-5944. [PMID: 30819803 DOI: 10.1074/jbc.ra118.005621] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 02/12/2019] [Indexed: 01/08/2023] Open
Abstract
X-linked inhibitor of apoptosis protein (XIAP) suppresses apoptosis and plays key roles in the development, growth, migration, and invasion of cancer cells. Therefore, XIAP has recently attracted much attention as a potential antineoplastic therapeutic target, requiring elucidation of the molecular mechanisms underlying its biological activities. Here, using shRNA-mediated gene silencing, immunoblotting, quantitative RT-PCR, anchorage-independent growth assay, and invasive assay, we found that XIAP's RING domain, but not its BIR domain, is crucial for XIAP-mediated up-regulation of c-Myc protein expression in human bladder cancer (BC) cells. Mechanistically, we observed that the RING domain stabilizes c-Myc by inhibiting its phosphorylation at Thr-58 and that this inhibition is due to activated ERK1/2-mediated phosphorylation of glycogen synthase kinase-3β (GSK-3β) at Ser-9. Functional studies further revealed that c-Myc protein promotes anchorage-independent growth and invasion stimulated by the XIAP RING domain in human BC cells. Collectively, the findings in our study uncover that the RING domain of XIAP supports c-Myc protein stability, providing insight into the molecular mechanism and role of c-Myc overexpression in cancer progression. Our observations support the notion of targeting XIAP's RING domain and c-Myc in cancer therapy.
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Affiliation(s)
- Guosong Jiang
- From the Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York 10987; the Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chao Huang
- From the Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York 10987; the Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xin Liao
- From the Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York 10987
| | - Jingxia Li
- From the Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York 10987
| | - Xue-Ru Wu
- the Department of Urology, New York University School of Medicine, New York, New York 10016
| | - Fuqing Zeng
- the Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Chuanshu Huang
- From the Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York 10987.
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14
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Zhang Y, Huang F, Luo Q, Wu X, Liu Z, Chen H, Huang Y. Inhibition of XIAP increases carboplatin sensitivity in ovarian cancer. Onco Targets Ther 2018; 11:8751-8759. [PMID: 30584333 PMCID: PMC6287417 DOI: 10.2147/ott.s171053] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Purpose Carboplatin is a first-line treatment for ovarian cancer. However, most patients develop resistance and undergo disease recurrence. This study aims to explore the relationship between the expression of X-linked inhibitor of apoptosis protein (XIAP) and carboplatin sensitivity in ovarian cancer. Patients and methods We examined the expression of XIAP in ovarian cancer by immuno-chemistry. Next, we investigated the role of XIAP in regulating carboplatin sensitivity in ovarian cancer ES2 and 3AO cells through Cell Counting Kit-8 cell viability assay and fluorescein isothiocyanate-Annexin V/propidium iodide apoptosis assay. Expression of apoptotic effectors was measured by Western blot. Results The immunochemistry results showed that high XIAP expression levels inversely correlated with carboplatin response (P=0.03) and progression-free survival (P=0.0068) in patients with ovarian cancer. Knockdown of XIAP repressed the cell viabilities in the carboplatin-treated cells and increased carboplatin-induced caspase activation. In summary, our data show that XIAP mediates carboplatin sensitivity of ovarian cancer. Conclusion In summary, our data show that XIAP mediates carboplatin sensitivity of ovarian cancer and XIAP may be a novel target for the treatment of carboplatin-resistant ovarian cancer.
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Affiliation(s)
- Yiping Zhang
- Cancer Institute, College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China, .,China National Center for Biotechnology Development, Beijing, China
| | - Furong Huang
- The State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,
| | - Qingyu Luo
- The State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,
| | - Xiaowei Wu
- The State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,
| | - Zhihua Liu
- The State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,
| | - Hongyan Chen
- The State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,
| | - Yinghui Huang
- Cancer Institute, College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China,
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15
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Li X, Tian Z, Jin H, Xu J, Hua X, Yan H, Liufu H, Wang J, Li J, Zhu J, Huang H, Huang C. Decreased c-Myc mRNA Stability via the MicroRNA 141-3p/AUF1 Axis Is Crucial for p63α Inhibition of Cyclin D1 Gene Transcription and Bladder Cancer Cell Tumorigenicity. Mol Cell Biol 2018; 38:e00273-18. [PMID: 30104251 PMCID: PMC6189456 DOI: 10.1128/mcb.00273-18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 06/15/2018] [Accepted: 08/01/2018] [Indexed: 12/16/2022] Open
Abstract
Bladder cancer (BC) ranks as the sixth most common cancer in the United States and is the leading cause of death in patients with urinary malignancies. p63 is a member of the p53 family and is believed to function as a tumor suppressor in human BCs. Our most recent studies revealed a previously unknown function of the RING of XIAP in promoting microRNA 4295 (miR-4295) transcription, thereby reducing p63α protein translation and enhancing normal urothelial transformation, whereas p63α upregulates hsp70 transcription, subsequently activating the HSP70/Wasf3/Wave3/matrix metalloproteinase 9 (MMP-9) axis and promoting BC cell invasion via initiating the transcription factor E2F1. In this study, we found that p63α inhibited cyclin D1 protein expression, subsequently decreasing the ability of BC cell anchorage-independent growth in vitro and tumorigenicity in vivo Mechanistic studies demonstrated that p63α expression is able to downregulate cyclin D1 gene transcription through attenuation of c-Myc mRNA stability. We further show that the reduction of miR-141-3p expression by p63α directly releases its inhibition of 3' untranslated region (UTR) activity of AU-rich element RNA-binding factor 1 (AUF1) mRNA, thereby increasing AUF1 protein translation and further resulting in degradation of c-Myc mRNA, which, in turn, reduces cyclin D1 gene transcription and BC cell anchorage-independent growth. Collectively, our results demonstrate that p63α is a negative regulator of BC cell tumorigenic growth, a distinctly different function than its promotion of BC invasion, thus providing further new insight into the "two faces" of p63α in regulation of BC cell tumorigenic growth and progression/invasion.
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Affiliation(s)
- Xin Li
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Zhongxian Tian
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Honglei Jin
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jiheng Xu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Xiaohui Hua
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Huiying Yan
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Huating Liufu
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingjing Wang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Junlan Zhu
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Haishan Huang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, China, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
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16
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Yu Y, Jin H, Xu J, Gu J, Li X, Xie Q, Huang H, Li J, Tian Z, Jiang G, Chen C, He F, Wu XR, Huang C. XIAP overexpression promotes bladder cancer invasion in vitro and lung metastasis in vivo via enhancing nucleolin-mediated Rho-GDIβ mRNA stability. Int J Cancer 2018; 142:2040-2055. [PMID: 29250796 PMCID: PMC5867227 DOI: 10.1002/ijc.31223] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 11/02/2017] [Accepted: 12/13/2017] [Indexed: 12/19/2022]
Abstract
Our recent studies demonstrate that X-linked inhibitor of apoptosis protein (XIAP) is essential for regulating colorectal cancer invasion. Here, we discovered that RhoGDIβ was a key XIAP downstream effector mediating bladder cancer (BC) invasion in vitro and in vivo. We found that both XIAP and RhoGDIβ expressions were consistently elevated in BCs of N-butyl-N-(4-hydroxybutyl)-nitrosamine (BBN)-treated mice in comparison to bladder tissues from vehicle-treated mice and human BCs in comparison to the paired adjacent normal bladder tissues. Knockdown of XIAP attenuated RhoGDIβ expression and reduced cancer cell invasion, whereas RhoGDIβ expression was attenuated in BBN-treated urothelium of RING-deletion knockin mice. Mechanistically, XIAP stabilized RhoGDIβ mRNA by its positively regulating nucleolin mRNA stability via Erks-dependent manner. Moreover, ectopic expression of GFP-RhoGDIβ in T24T(shXIAP) cells restored its lung metastasis in nude mice. Our results demonstrate that XIAP-regulated Erks/nucleolin/RhoGDIβ axis promoted BC invasion and lung metastasis.
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Affiliation(s)
- Yonghui Yu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
| | - Honglei Jin
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
| | - Jiheng Xu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
| | - Jiayan Gu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China 325035
| | - Xin Li
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China 325035
| | - Qipeng Xie
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China 325035
| | - Haishan Huang
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China 325035
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
| | - Zhongxian Tian
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
| | - Guosong Jiang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
| | - Caiyi Chen
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China 325035
| | - Feng He
- Departments of Urology and Pathology, New York University School of Medicine, Veterans Affairs New York Harbor Healthcare System, Manhattan Campus, New York, NY 10016, USA
| | - Xue-Ru Wu
- Departments of Urology and Pathology, New York University School of Medicine, Veterans Affairs New York Harbor Healthcare System, Manhattan Campus, New York, NY 10016, USA
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
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17
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XIAP RING domain mediates miR-4295 expression and subsequently inhibiting p63α protein translation and promoting transformation of bladder epithelial cells. Oncotarget 2018; 7:56540-56557. [PMID: 27447744 PMCID: PMC5302933 DOI: 10.18632/oncotarget.10645] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 06/13/2016] [Indexed: 12/12/2022] Open
Abstract
The X-linked inhibitor of apoptosis protein (XIAP) contains three N-terminal BIR domains that mediate anti-apoptosis and one C-terminal RING finger domain whose function(s) are not fully defined. Here we show that the RING domain of XIAP strongly inhibits the expression of p63α, a known tumor suppressor. XIAP knockdown in urothelial cells or RING deletion in knockin mice markedly upregulates p63α expression. This RING-mediated p63α downregulation is critical for the malignant transformation of normal urothelial cells following EGF treatment. We further show that the RING domain promotes Sp1-mediated transcription of miR-4295 which targets the 3′UTR of p63α mRNA and consequently inhibits p63α translation. Our results reveal a previously unknown function of the RING of XIAP in promoting miR-4295 transcription, thereby reducing p63α translation and enhancing urothelial transformation. Our data offer novel insights into the multifunctional effects of the XIAP RING domain on urothelial tumorigenesis and the potential for targeting this frequently overexpressed protein as a therapeutic alternative.
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18
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Liao X, Huang C, Zhang D, Wang J, Li J, Jin H, Huang C. Mitochondrial catalase induces cells transformation through nucleolin-dependent Cox-2 mRNA stabilization. Free Radic Biol Med 2017; 113:478-486. [PMID: 29097213 DOI: 10.1016/j.freeradbiomed.2017.10.387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 10/26/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022]
Abstract
It's well documented that over-production of reactive oxygen species (ROS) causes detrimental damages to cells. While a low level of ROS, such as H2O2, functions as signaling transducer and motivates cell proliferation in both cancer and non-transformed stem cells. As a double-edged sword, the direct evidence for demonstrating the function of H2O2 in the cause of tumor is barely characterized in intact cells. In our current study, we found that targeted expression of mitochondrial catalase (mCAT), but not catalase, could significantly reduce the accumulation of H2O2 in mouse epithelial JB6 Cl41 cells, consequently led to the cell malignant transformation and anchorage-independent cell growth. Further study revealed that this reduction of H2O2 resulted in the translocation of nucleolin from the cytoplasm to nuclear, and maintaining the nucleolin nuclear location status, and in turn stabilizing the cox-2 mRNA and consequently leading to a COX-2 protein upregulation, as well as malignant transforming mCAT-overexpressed Cl41 cells. Collectively, our studies here provide direct experimental evidence demonstrating a novel function and molecular mechanisms of mCAT in transforming mouse Cl41 cells, and high significance insight into understanding the beneficial aspect of H2O2 in circumventing tumor promotion and the theoretical basis for the management of H2O2 in the clinic implementation as a chemotherapeutic strategy.
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Affiliation(s)
- Xin Liao
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA; Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chao Huang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA
| | - Dongyun Zhang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA
| | - Jingjing Wang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA; Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA
| | - Honglei Jin
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA.
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19
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Potential biological process of X-linked inhibitor of apoptosis protein in renal cell carcinoma based upon differential protein expression analysis. Oncol Lett 2017; 15:821-832. [PMID: 29403558 PMCID: PMC5780803 DOI: 10.3892/ol.2017.7383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 09/28/2017] [Indexed: 01/04/2023] Open
Abstract
The X-linked inhibitor of apoptosis protein (XIAP) is the best characterized member of the IAP family and is a potent inhibitor of the caspase/apoptosis pathway. It has also been revealed that XIAP has additional biological functions that rely on its direct inhibition of apoptosis. In the present study, stably transfected Caki-1 cells with XIAP-knockdown were generated, and an isobaric tag for relative and absolute quantitation-based proteomics approach was employed to investigate the regulatory mechanism of XIAP in renal cell carcinoma (RCC). The results demonstrate that the sensitivity of the RCC cell line to apoptotic stimulation increased markedly with XIAP-knockdown. A number of differentially expressed proteins were detected between the original Caki-1 cell line and the XIAP-knockdown Caki-1 cell line; 87 at 0 h (prior to etoposide treatment), 178 at 0.5 h and 169 at 3 h, while no differentially expressed proteins were detected (ratio >1.5 or <0.5; P<0.05) at 12 h after etoposide treatment. Through analysis of the differentially expressed proteins, it was revealed that XIAP may participate in the tumor protein p53 pathway, the Wnt signaling pathway, glucose metabolism, endoplasmic reticulum stress, cytoskeletal regulation and DNA repair. These results indicate that XIAP may have a number of biological functions and may provide an insight into the biomedical significance of XIAP overexpression in RCC.
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20
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Werner TA, Dizdar L, Nolten I, Riemer JC, Mersch S, Schütte SC, Driemel C, Verde PE, Raba K, Topp SA, Schott M, Knoefel WT, Krieg A. Survivin and XIAP - two potential biological targets in follicular thyroid carcinoma. Sci Rep 2017; 7:11383. [PMID: 28900184 PMCID: PMC5595817 DOI: 10.1038/s41598-017-11426-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 07/17/2017] [Indexed: 12/22/2022] Open
Abstract
Follicular thyroid carcinoma's (FTC) overall good prognosis deteriorates if the tumour fails to retain radioactive iodine. Therefore, new druggable targets are in high demand for this subset of patients. Here, we investigated the prognostic and biological role of survivin and XIAP in FTC. Survivin and XIAP expression was investigated in 44 FTC and corresponding non-neoplastic thyroid specimens using tissue microarrays. Inhibition of both inhibitor of apoptosis proteins (IAP) was induced by shRNAs or specific small molecule antagonists and functional changes were investigated in vitro and in vivo. Survivin and XIAP were solely expressed in FTC tissue. Survivin expression correlated with an advanced tumour stage and recurrent disease. In addition, survivin proved to be an independent negative prognostic marker. Survivin or XIAP knockdown caused a significant reduction in cell viability and proliferation, activated caspase3/7 and was associated with a reduced tumour growth in vivo. IAP-targeting compounds induced a decrease of cell viability, proliferation and cell cycle activity accompanied by an increase in apoptosis. Additionally, YM155 a small molecule inhibitor of survivin expression significantly inhibited tumour growth in vivo. Both IAPs demonstrate significant functional implications in the oncogenesis of FTCs and thus prove to be viable targets in patients with advanced FTC.
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Affiliation(s)
- Thomas A Werner
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Levent Dizdar
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Inga Nolten
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Jasmin C Riemer
- Institute of Pathology, Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Sabrina Mersch
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Sina C Schütte
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Christiane Driemel
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Pablo E Verde
- Coordination Centre for Clinical Trials, Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Katharina Raba
- Institute for Transplantation Diagnostics and Cell Therapeutics, Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Stefan A Topp
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Matthias Schott
- Division for Specific Endocrinology, Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Wolfram T Knoefel
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany
| | - Andreas Krieg
- Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
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Huang C, Zeng X, Jiang G, Liao X, Liu C, Li J, Jin H, Zhu J, Sun H, Wu XR, Huang C. XIAP BIR domain suppresses miR-200a expression and subsequently promotes EGFR protein translation and anchorage-independent growth of bladder cancer cell. J Hematol Oncol 2017; 10:6. [PMID: 28057023 PMCID: PMC5217641 DOI: 10.1186/s13045-016-0376-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 12/12/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The X-linked inhibitor of apoptosis protein (XIAP) is a well-known potent apoptosis suppressor and also participates in cancer cell biological behaviors, therefore attracting great attentions as a potential antineoplastic therapeutic target for past years. Anti-IAP therapy is reported to be closely related to epidermal growth factor receptor (EGFR) expression level. However, whether and how XIAP modulates EGFR expression remains largely unknown. METHODS Human XIAP was knockdown with short-hairpin RNA in two different bladder cancer cell lines, T24T and UMUC3. Two XIAP mutants, XIAP ∆BIR (deletion of N-terminal three BIR domains) and XIAP ∆RING (deletion of C-terminal RING domain and keeping the function of BIR domains), were generated to determine which domain is involved in regulating EGFR. RESULTS We found here that lacking of XIAP expression resulted in a remarkable suppression of EGFR expression, consequently leading to the deficiency of anchorage-independent cell growth. Further study demonstrated that BIR domain of XIAP was crucial for regulating the EGFR translation by suppressing the transcription and expression of miR-200a. Mechanistic studies indicated that BIR domain activated the protein phosphatase 2 (PP2A) activity by decreasing the phosphorylation of PP2A at Tyr307 in its catalytic subunit, PP2A-C. Such activated PP2A prevented the deviant phosphorylation and activation of MAPK kinases/MAPKs, their downstream effector c-Jun, and in turn inhibiting transcription of c-Jun-regulated the miR-200a. CONCLUSIONS Our study uncovered a novel function of BIR domain of XIAP in regulating the EGFR translation, providing significant insight into the understanding of the XIAP overexpression in the cancer development and progression, further offering a new theoretical support for using XIAP BIR domain and EGFR as targets for cancer therapy.
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Affiliation(s)
- Chao Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
| | - Xingruo Zeng
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
| | - Guosong Jiang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
| | - Xin Liao
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
| | - Claire Liu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
| | - Honglei Jin
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China, 325035
| | - Junlan Zhu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China, 325035
| | - Hong Sun
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA
| | - Xue-Ru Wu
- Departments of Urology and Pathology, New York University School of Medicine, New York, NY, 10016, USA
- VA Medical Center in Manhattan, New York, NY, 10010, USA
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY, 10987, USA.
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22
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Gérard C, Goldbeter A. Dynamics of the mammalian cell cycle in physiological and pathological conditions. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2015; 8:140-56. [PMID: 26613368 DOI: 10.1002/wsbm.1325] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 09/22/2015] [Accepted: 10/08/2015] [Indexed: 01/01/2023]
Abstract
A network of cyclin-dependent kinases (Cdks) controls progression along the successive phases G1, S, G2, and M of the mammalian cell cycle. Deregulations in the expression of molecular components in this network often lead to abusive cell proliferation and cancer. Given the complex nature of the Cdk network, it is fruitful to resort to computational models to grasp its dynamical properties. Investigated by means of bifurcation diagrams, a detailed computational model for the Cdk network shows how the balance between quiescence and proliferation is affected by activators (oncogenes) and inhibitors (tumor suppressors) of cell cycle progression, as well as by growth factors and other external factors such as the extracellular matrix (ECM) and cell contact inhibition. Suprathreshold changes in all these factors can trigger a switch in the dynamical behavior of the network corresponding to a bifurcation between a stable steady state, associated with cell cycle arrest, and sustained oscillations of the various cyclin/Cdk complexes, corresponding to cell proliferation. The model for the Cdk network accounts for the dependence or independence of cell proliferation on serum and/or cell anchorage to the ECM. Such computational approach provides an integrated view of the control of cell proliferation in physiological or pathological conditions. Whether the balance is tilted toward cell cycle arrest or cell proliferation depends on the direction in which the threshold associated with the bifurcation is passed once the cell integrates the multiple signals, internal or external to the Cdk network, that promote or impede progression in the cell cycle.
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Affiliation(s)
- Claude Gérard
- Unité de Chronobiologie théorique, Faculté des Sciences, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Albert Goldbeter
- Unité de Chronobiologie théorique, Faculté des Sciences, Université Libre de Bruxelles (ULB), Brussels, Belgium.,Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Research Centre at Stellenbosch University, Marais Street, Stellenbosch, South Africa
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23
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Zhu X, Straubinger RM, Jusko WJ. Mechanism-based mathematical modeling of combined gemcitabine and birinapant in pancreatic cancer cells. J Pharmacokinet Pharmacodyn 2015; 42:477-96. [PMID: 26252969 DOI: 10.1007/s10928-015-9429-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 07/24/2015] [Indexed: 01/05/2023]
Abstract
Combination chemotherapy is standard treatment for pancreatic cancer. However, current drugs lack efficacy for most patients, and selection and evaluation of new combination regimens is empirical and time-consuming. The efficacy of gemcitabine, a standard-of-care agent, combined with birinapant, a pro-apoptotic antagonist of Inhibitor of Apoptosis Proteins (IAPs), was investigated in pancreatic cancer cells. PANC-1 cells were treated with vehicle, gemcitabine (6, 10, 20 nM), birinapant (50, 200, 500 nM), and combinations of the two drugs. Temporal changes in cell numbers, cell cycle distribution, and apoptosis were measured. A basic pharmacodynamic (PD) model based on cell numbers, and a mechanism-based PD model integrating all measurements, were developed. The basic PD model indicated that synergistic effects occurred in both cell proliferation and death processes. The mechanism-based model captured key features of drug action: temporary cell cycle arrest in S phase induced by gemcitabine alone, apoptosis induced by birinapant alone, and prolonged cell cycle arrest and enhanced apoptosis induced by the combination. A drug interaction term Ψ was employed in the models to signify interactions of the combination when data were limited. When more experimental information was utilized, Ψ values approaching 1 indicated that specific mechanisms of interactions were captured better. PD modeling identified the potential benefit of combining gemcitabine and birinapant, and characterized the key interaction pathways. An optimal treatment schedule of pretreatment with gemcitabine for 24-48 h was suggested based on model predictions and was verified experimentally. This approach provides a generalizable modeling platform for exploring combinations of cytostatic and cytotoxic agents in cancer cell culture studies.
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Affiliation(s)
- Xu Zhu
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, 14214, USA
| | - Robert M Straubinger
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, 14214, USA
| | - William J Jusko
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, 14214, USA.
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The X-Linked Inhibitor of Apoptosis Protein Inhibitor Embelin Suppresses Inflammation and Bone Erosion in Collagen Antibody Induced Arthritis Mice. Mediators Inflamm 2015; 2015:564042. [PMID: 26347311 PMCID: PMC4539506 DOI: 10.1155/2015/564042] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/27/2014] [Accepted: 09/28/2014] [Indexed: 01/04/2023] Open
Abstract
Objective. To investigate the effect of Embelin, an inhibitor of X-Linked Inhibitor of Apoptosis Protein (XIAP), on inflammation and bone erosion in a collagen antibody induced arthritis (CAIA) in mice. Methods. Four groups of mice (n = 6 per group) were allocated: CAIA untreated mice, CAIA treated with Prednisolone (10 mg/kg/day), CAIA treated with low dose Embelin (30 mg/kg/day), and CAIA treated with high dose Embelin (50 mg/kg/day). Joint inflammation was evaluated using clinical paw score and histological assessments. Bone erosion was assessed using micro-CT, tartrate resistant acid phosphatase (TRAP) staining, and serum carboxy-terminal collagen crosslinks (CTX-1) ELISA. Immunohistochemistry was used to detect XIAP protein. TUNEL was performed to identify apoptotic cells. Results. Low dose, but not high dose Embelin, suppressed inflammation as reflected by lower paw scores (P < 0.05) and lower histological scores for inflammation. Low dose Embelin reduced serum CTX-1 (P < 0.05) and demonstrated lower histological score and TRAP counting, and slightly higher bone volume as compared to CAIA untreated mice. XIAP expression was not reduced but TUNEL positive cells were more abundant in Embelin treated CAIA mice. Conclusion. Low dose Embelin suppressed inflammation and serum CTX-1 in CAIA mice, indicating a potential use for Embelin to treat pathological bone loss.
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Cao Z, Li X, Li J, Luo W, Huang C, Chen J. X-linked inhibitor of apoptosis protein (XIAP) lacking RING domain localizes to the nuclear and promotes cancer cell anchorage-independent growth by targeting the E2F1/Cyclin E axis. Oncotarget 2015; 5:7126-37. [PMID: 25216527 PMCID: PMC4196189 DOI: 10.18632/oncotarget.2227] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The inhibitor of apoptosis protein XIAP (X-linked inhibitor of apoptosis protein) is a well-documented protein that is located in cytoplasm acting as a potent regulator of cell apoptosis. Here, we showed that expressing XIAP with RING (Really Interesting New Gene) domain deletion (XIAPΔRING) in cancer cells promoted cancer cell anchorage-independent growth and G1/S phase transition companied with increasing cyclin e transcription activity and protein expression. Further studies revealed that XIAPΔRING was mainly localized in nuclear with increased binding with E2F1, whereas XIAP with BIR (Baculoviral IAP Repeat) domains deletion (XIAPΔBIRs) was entirely presented in cytoplasma with losing its binding with E2F1, suggesting that RING domain was able to inhibit BIR domains nuclear localization, by which impaired BIRs binding with E2F1 in cellular nucleus in intact cells. These studies identified a new function of XIAP protein in cellular nucleus is to regulate E2F1 transcriptional activity by binding with E2F1 in cancer cells. Our current finding of an effect of XIAPΔRING expression on cancer cell anchorage-independent growth suggests that overexpression of this protein may contribute to genetic instability associated with cell cycle and checkpoint perturbations, in addition to its impact on cellular apoptosis.
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Affiliation(s)
- Zipeng Cao
- Department of Occupational and Environmental Health and Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China. Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, USA
| | - Xueyong Li
- Department of Plastic and Burn Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, USA
| | - Wenjing Luo
- Department of Occupational and Environmental Health and Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, USA
| | - Jingyuan Chen
- Department of Occupational and Environmental Health and Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an, China
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Isorhapontigenin (ISO) inhibited cell transformation by inducing G0/G1 phase arrest via increasing MKP-1 mRNA Stability. Oncotarget 2015; 5:2664-77. [PMID: 24797581 PMCID: PMC4058035 DOI: 10.18632/oncotarget.1872] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The cancer chemopreventive property of Chinese herb new isolate isorhapontigenin (ISO) and mechanisms underlying its activity have never been explored. Here we demonstrated that ISO treatment with various concentrations for 3 weeks could dramatically inhibit TPA/EGF-induced cell transformation of Cl41 cells in Soft Agar assay, whereas co-incubation of cells with ISO at the same concentrations could elicit G0/G1 cell-cycle arrest without redundant cytotoxic effects on non-transformed cells. Further studies showed that ISO treatment resulted in cyclin D1 downregulation in dose- and time-dependent manner. Our results indicated that ISO regulated cyclin D1 at transcription level via targeting JNK/C-Jun/AP-1 activation. Moreover, we found that ISO-inhibited JNK/C-Jun/AP-1 activation was mediated by both upregulation of MKP-1 expression through increasing its mRNA stability and deactivating MKK7. Most importantly, MKP-1 knockdown could attenuate ISO-mediated suppression of JNK/C-Jun activation and cyclin D1 expression, as well as G0/G1 cell cycle arrest and cell transformation inhibition, while ectopic expression of FLAG-cyclin D1 T286A mutant also reversed ISO-induced G0/G1 cell-cycle arrest and inhibition of cell transformation. Our results demonstrated that ISO is a promising chemopreventive agent via upregulating mkp-1 mRNA stability, which is distinct from its cancer therapeutic effect with downregulation of XIAP and cyclin D1 expression.
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27
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Zhang J, Gao G, Chen L, Li J, Deng X, Zhao QS, Huang C. Hydrogen peroxide/ATR-Chk2 activation mediates p53 protein stabilization and anti-cancer activity of cheliensisin A in human cancer cells. Oncotarget 2015; 5:841-52. [PMID: 24553354 PMCID: PMC3996661 DOI: 10.18632/oncotarget.1780] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Cheliensisine A (Chel A) as a novel styryl-lactone isolated from Goniothalamus cheliensis Hu has been indicated to be a chemotherapeutic agent in Leukemia HL-60 cells. However, its potential for cancer treatment and the underlying mechanisms are not deeply investigated to the best of our knowledge. Current studies showed that Chel A could trigger p53-mediated apoptosis, accompanied with dramatically inhibition of anchorage-independent growth of human colon cancer HCT116 cells. Further studies found that Chel A treatment resulted in p53 protein stabilization and accumulation via the induction of its phosphorylation at Ser20 and Ser15. Moreover, Chel A-induced p53 protein accumulation and activation required ATR/Chk2 axis, which is distinct from the mechanism that we have most recently identified the Chk1/p53-dependent apoptotic response by Chel A in normal mouse epidermal Cl41 cells. In addition, our results demonstrated that hydrogen peroxide generation induced by Chel A acted as a precursor for all these signaling events and downstream biological effects. Taken together, we have identified the Chel A as a new therapeutic agent, which highlights its potential for cancer therapeutic effect.
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Affiliation(s)
- Jingjie Zhang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, USA
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Zhu J, Zhang J, Huang H, Li J, Yu Y, Jin H, Li Y, Deng X, Gao J, Zhao Q, Huang C. Crucial role of c-Jun phosphorylation at Ser63/73 mediated by PHLPP protein degradation in the cheliensisin a inhibition of cell transformation. Cancer Prev Res (Phila) 2014; 7:1270-81. [PMID: 25281487 DOI: 10.1158/1940-6207.capr-14-0233] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Cheliensisin A (Chel A), as a novel styryl-lactone isolated from Goniothalamus cheliensis Hu, has been demonstrated to have an inhibition of EGF-induced Cl41 cell transformation via stabilizing p53 protein in a Chk1-dependent manner, suggesting its chemopreventive activity in our previous studies. However, its underlying molecular mechanisms have not been fully characterized yet. In the current study, we found that Chel A treatment could increase c-Jun protein phosphorylation and activation, whereas the inhibition of c-Jun phosphorylation, by ectopic expression of a dominant-negative mutant of c-Jun, TAM67, reversed the Chel A inhibition of EGF-induced cell transformation and impaired Chel A induction of p53 protein and apoptosis. Moreover, our results indicated that Chel A treatment led to a PHLPP downregulation by promoting PHLPP protein degradation. We also found that PHLPP could interact with and bind to c-Jun protein, whereas ectopic PHLPP expression blocked c-Jun activation, p53 protein and apoptotic induction by Chel A, and further reversed the Chel A inhibition of EGF-induced cell transformation. With the findings, we have demonstrated that Chel A treatment promotes a PHLPP protein degradation, which can bind to c-Jun and mediates c-Jun phosphorylation, and further leading to p53 protein induction, apoptotic responses, subsequently resulting in cell transformation inhibition and chemopreventive activity of Chel A.
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Affiliation(s)
- Junlan Zhu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York. Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingjie Zhang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York
| | - Haishan Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York. Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York
| | - Yonghui Yu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York
| | - Honglei Jin
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York. Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yang Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York. Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xu Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Jimin Gao
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
| | - Qinshi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York.
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Tarasewicz E, Hamdan R, Straehla J, Hardy A, Nunez O, Zelivianski S, Dokic D, Jeruss JS. CDK4 inhibition and doxorubicin mediate breast cancer cell apoptosis through Smad3 and survivin. Cancer Biol Ther 2014; 15:1301-11. [PMID: 25006666 DOI: 10.4161/cbt.29693] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Cyclin D1/CDK4 activity is upregulated in up to 50% of breast cancers and CDK4-mediated phosphorylation negatively regulates the TGFβ superfamily member Smad3. We sought to determine if CDK4 inhibition and doxorubicin chemotherapy could impact Smad3-mediated cell/colony growth and apoptosis in breast cancer cells. Parental and cyclin D1-overexpressing MCF7 cells were treated with CDK4 inhibitor, doxorubicin, or combination therapy and cell proliferation, apoptosis, colony formation, and expression of apoptotic proteins were evaluated using an MTS assay, TUNEL staining, 3D Matrigel assay, and apoptosis array/immunoblotting. Study cells were also transduced with WT Smad3 or a Smad3 construct resistant to CDK4 phosphorylation (5M) and colony formation and expression of apoptotic proteins were assessed. Treatment with CDK4 inhibitor/doxorubicin combination therapy, or transduction with 5M Smad3, resulted in a similar decrease in colony formation. Treating cyclin D overexpressing breast cancer cells with combination therapy also resulted in the greatest increase in apoptosis, resulted in decreased expression of anti-apoptotic proteins survivin and XIAP, and impacted subcellular localization of pro-apoptotic Smac/DIABLO. Additionally, transduction of 5M Smad3 and doxorubicin treatment resulted in the greatest change in apoptotic protein expression. Collectively, this work showed the impact of CDK4 inhibitor-mediated, Smad3-regulated tumor suppression, which was augmented in doxorubicin-treated cyclin D-overexpressing study cells.
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Affiliation(s)
- Elizabeth Tarasewicz
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
| | - Randala Hamdan
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
| | - Joelle Straehla
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
| | - Ashley Hardy
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
| | - Omar Nunez
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
| | - Stanislav Zelivianski
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
| | - Danijela Dokic
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
| | - Jacqueline S Jeruss
- Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago, IL USA; Robert H. Lurie Comprehensive Cancer Center; Chicago, IL USA
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Gérard C, Goldbeter A. The balance between cell cycle arrest and cell proliferation: control by the extracellular matrix and by contact inhibition. Interface Focus 2014; 4:20130075. [PMID: 24904738 PMCID: PMC3996587 DOI: 10.1098/rsfs.2013.0075] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
To understand the dynamics of the cell cycle, we need to characterize the balance between cell cycle arrest and cell proliferation, which is often deregulated in cancers. We address this issue by means of a detailed computational model for the network of cyclin-dependent kinases (Cdks) driving the mammalian cell cycle. Previous analysis of the model focused on how this balance is controlled by growth factors (GFs) or the levels of activators (oncogenes) and inhibitors (tumour suppressors) of cell cycle progression. Supra-threshold changes in the level of any of these factors can trigger a switch in the dynamical behaviour of the Cdk network corresponding to a bifurcation between a stable steady state, associated with cell cycle arrest, and sustained oscillations of the various cyclin/Cdk complexes, corresponding to cell proliferation. Here, we focus on the regulation of cell proliferation by cellular environmental factors external to the Cdk network, such as the extracellular matrix (ECM), and contact inhibition, which increases with cell density. We extend the model for the Cdk network by including the phenomenological effect of both the ECM, which controls the activation of the focal adhesion kinase (FAK) that promotes cell cycle progression, and cell density, which inhibits cell proliferation via the Hippo/YAP pathway. The model shows that GFs and FAK activation are capable of triggering in a similar dynamical manner the transition to cell proliferation, while the Hippo/YAP pathway can arrest proliferation once cell density passes a critical threshold. The results account for the dependence or independence of cell proliferation on serum and/or cell anchorage to ECM. Whether the balance in the Cdk network is tilted towards cell cycle arrest or proliferation depends on the direction in which the threshold associated with the bifurcation is passed once the cell integrates the multiple, internal or external signals that promote or impede progression in the cell cycle.
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Affiliation(s)
- Claude Gérard
- Unité de Chronobiologie théorique, Faculté des Sciences , Université Libre de Bruxelles (ULB) , Campus Plaine, CP 231, Brussels 1050 , Belgium
| | - Albert Goldbeter
- Unité de Chronobiologie théorique, Faculté des Sciences , Université Libre de Bruxelles (ULB) , Campus Plaine, CP 231, Brussels 1050 , Belgium ; Stellenbosch Institute for Advanced Study (STIAS) , Wallenberg Research Centre at Stellenbosch University , Marais Street, Stellenbosch 7600 , South Africa
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S-Nitrosylation in Alzheimer's disease. Mol Neurobiol 2014; 51:268-80. [DOI: 10.1007/s12035-014-8672-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 03/06/2014] [Indexed: 10/25/2022]
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32
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Zhang Z, Qin C, Wu Y, Su Z, Xian G, Hu B. CCR9 as a prognostic marker and therapeutic target in hepatocellular carcinoma. Oncol Rep 2014; 31:1629-36. [PMID: 24481516 DOI: 10.3892/or.2014.2998] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 01/07/2014] [Indexed: 01/25/2023] Open
Abstract
The chemokine receptor CCR9 was recently implicated in tumor biology. In the present study, our objective was to evaluate the clinical significance and potential role of CCR9 in hepatocellular carcinoma (HCC). CCR9 expression was detected by immunohistochemistry, quantitative PCR (qPCR) and western blotting in HCC patients. The prognostic significance of CCR9 expression was assessed. The functional roles of CCR9 in HCC were investigated using MTT, BrdU, colony formation assay and flow cytometry. CCR9 was significantly elevated in HCC tissue samples. High CCR9 expression was correlated with multiple tumor nodes, high Edmondson-Steiner grade and vascular invasion. Multivariate analysis showed that CCR9 expression was an independent prognostic factor for the overall survival (OS) of HCC patients. Further investigations revealed that ectopic expression of CCR9 enhanced cell proliferation and tumorigenicity in HCC cells, whereas CCR9 silencing impaired cell proliferation and tumorigenicity, which was mediated through downregulation of the cell cycle regulators p21, p27 as well as upregulation of cyclin D1. These results suggest that CCR9 can act as a novel prognostic marker and therapeutic target for HCC.
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Affiliation(s)
- Zhenhai Zhang
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Chengkun Qin
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Yaguang Wu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Zhongxue Su
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Guozhe Xian
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Bo Hu
- Department of Emergency, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
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YU BO, YUE DONGMEI, SHU LINHUA, LI NAIJING, WANG JIAHE. Pseudolaric acid B induces caspase-dependent cell death in human ovarian cancer cells. Oncol Rep 2013; 31:849-57. [DOI: 10.3892/or.2013.2869] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 11/04/2013] [Indexed: 11/06/2022] Open
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