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McMenemy CM, Guo D, Quinn JA, Greenhalgh DA. 14-3-3σ/Stratifin and p21 limit AKT-related malignant progression in skin carcinogenesis following MDM2-associated p53 loss. Mol Carcinog 2024; 63:1768-1782. [PMID: 38869281 DOI: 10.1002/mc.23771] [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: 03/05/2024] [Revised: 05/20/2024] [Accepted: 05/28/2024] [Indexed: 06/14/2024]
Abstract
To study mechanisms driving/inhibiting skin carcinogenesis, stage-specific expression of 14-3-3σ (Stratifin) was analyzed in skin carcinogenesis driven by activated rasHa/fos expression (HK1.ras/fos) and ablation of PTEN-mediated AKT regulation (K14.creP/Δ5PTENflx/flx). Consistent with 14-3-3σ roles in epidermal differentiation, HK1.ras hyperplasia and papillomas displayed elevated 14-3-3σ expression in supra-basal keratinocytes, paralleled by supra-basal p-MDM2166 activation and sporadic p-AKT473 expression. In bi-genic HK1.fos/Δ5PTENflx/flx hyperplasia, basal-layer 14-3-3σ expression appeared, and alongside p53/p21, was associated with keratinocyte differentiation and keratoacanthoma etiology. Tri-genic HK1.ras/fos-Δ5PTENflx/flx hyperplasia/papillomas initially displayed increased basal-layer 14-3-3σ, suggesting attempts to maintain supra-basal p-MDM2166 and protect basal-layer p53. However, HK1.ras/fos-Δ5PTENflx/flx papillomas exhibited increasing basal-layer p-MDM2166 activation that reduced p53, which coincided with malignant conversion. Despite p53 loss, 14-3-3σ expression persisted in well-differentiated squamous cell carcinomas (wdSCCs) and alongside elevated p21, limited malignant progression via inhibiting p-AKT1473 expression; until 14-3-3σ/p21 loss facilitated progression to aggressive SCC exhibiting uniform p-AKT1473. Analysis of TPA-promoted HK1.ras-Δ5PTENflx/flx mouse skin, demonstrated early loss of 14-3-3σ/p53/p21 in hyperplasia and papillomas, with increased p-MDM2166/p-AKT1473 that resulted in rapid malignant conversion and progression to poorly differentiated SCC. In 2D/3D cultures, membranous 14-3-3σ expression observed in normal HaCaT and SP1ras61 papilloma keratinocytes was unexpectedly detected in malignant T52ras61/v-fos SCC cells cultured in monolayers, but not invasive 3D-cells. Collectively, these data suggest 14-3-3σ/Stratifin exerts suppressive roles in papillomatogenesis via MDM2/p53-dependent mechanisms; while persistent p53-independent expression in early wdSCC may involve p21-mediated AKT1 inhibition to limit malignant progression.
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Affiliation(s)
- Carol M McMenemy
- Section of Dermatology and Molecular Carcinogenesis, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, Glasgow University, Glasgow, Scotland
| | - Dajiang Guo
- Section of Dermatology and Molecular Carcinogenesis, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, Glasgow University, Glasgow, Scotland
| | - Jean A Quinn
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland
| | - David A Greenhalgh
- Section of Dermatology and Molecular Carcinogenesis, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, Glasgow University, Glasgow, Scotland
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2
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Valdivia A, Duran C, Lee M, Williams HC, Lee MY, San Martin A. Nox1-based NADPH oxidase regulates the Par protein complex activity to control cell polarization. Front Cell Dev Biol 2023; 11:1231489. [PMID: 37635877 PMCID: PMC10457011 DOI: 10.3389/fcell.2023.1231489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/25/2023] [Indexed: 08/29/2023] Open
Abstract
Cell migration is essential for many biological and pathological processes. Establishing cell polarity with a trailing edge and forming a single lamellipodium at the leading edge of the cell is crucial for efficient directional cell migration and is a hallmark of mesenchymal cell motility. Lamellipodia formation is regulated by spatial-temporal activation of the small GTPases Rac and Cdc42 at the front edge, and RhoA at the rear end. At a molecular level, partitioning-defective (Par) protein complex comprising Par3, Par6, and atypical Protein Kinase (aPKC isoforms ζ and λ/ι) regulates front-rear axis polarization. At the front edge, integrin clustering activates Cdc42, prompting the formation of Par3/Par6/aPKC complexes to modulate MTOC positioning and microtubule stabilization. Consequently, the Par3/Par6/aPKC complex recruits Rac1-GEF Tiam to activate Rac1, leading to lamellipodium formation. At the rear end, RhoA-ROCK phosphorylates Par3 disrupting its interaction with Tiam and inactivating Rac1. RhoA activity at the rear end allows the formation of focal adhesions and stress fibers necessary to generate the traction forces that allow cell movement. Nox1-based NADPH oxidase is necessary for PDGF-induced migration in vitro and in vivo for many cell types, including fibroblasts and smooth muscle cells. Here, we report that Nox1-deficient cells failed to acquire a normal front-to-rear polarity, polarize MTOC, and form a single lamellipodium. Instead, these cells form multiple protrusions that accumulate Par3 and active Tiam. The exogenous addition of H2O2 rescues this phenotype and is associated with the hyperactivation of Par3, Tiam, and Rac1. Mechanistically, Nox1 deficiency induces the inactivation of PP2A phosphatase, leading to increased activation of aPKC. These results were validated in Nox1y/- primary mouse aortic smooth muscle cells (MASMCs), which also showed PP2A inactivation after PDGF-BB stimulation consistent with exacerbated activation of aPKC. Moreover, we evaluated the physiological relevance of this signaling pathway using a femoral artery wire injury model to generate neointimal hyperplasia. Nox1y/- mice showed increased staining for the inactive form of PP2A and increased signal for active aPKC, suggesting that PP2A and aPKC activities might contribute to reducing neointima formation observed in the arteries of Nox1y/- mice.
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Affiliation(s)
- Alejandra Valdivia
- Division of Cardiology, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, United States
| | - Charity Duran
- Division of Cardiology, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, United States
| | - Mingyoung Lee
- Division of Cardiology, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, United States
| | - Holly C. Williams
- Division of Cardiology, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, United States
| | - Moo-Yeol Lee
- Division of Cardiology, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, United States
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Goyang, Republic of Korea
| | - Alejandra San Martin
- Division of Cardiology, Department of Medicine, School of Medicine, Emory University, Atlanta, GA, United States
- Institute of Biomedical Sciences, Faculty of Medicine and Faculty of Life Science, Universidad Andres Bello, Santiago, Chile
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3
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Mohammad AH, Couture F, Gamache I, Chen O, El-Assaad W, Abdel-Malak N, Kwiatkowska A, Muller W, Day R, Teodoro JG. Cleavage of the V-ATPase associated prorenin receptor is mediated by PACE4 and is essential for growth of prostate cancer cells. PLoS One 2023; 18:e0288622. [PMID: 37463144 PMCID: PMC10353799 DOI: 10.1371/journal.pone.0288622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 06/30/2023] [Indexed: 07/20/2023] Open
Abstract
Phosphatase and tensin homolog (PTEN) mutation is common in prostate cancer during progression to metastatic and castration resistant forms. We previously reported that loss of PTEN function in prostate cancer leads to increased expression and secretion of the Prorenin Receptor (PRR) and its soluble processed form, the soluble Prorenin Receptor (sPRR). PRR is an essential factor required for proper assembly and activity of the vacuolar-ATPase (V-ATPase). The V-ATPase is a rotary proton pump required for the acidification of intracellular vesicles including endosomes and lysosomes. Acidic vesicles are involved in a wide range of cancer related pathways such as receptor mediated endocytosis, autophagy, and cell signalling. Full-length PRR is cleaved at a conserved consensus motif (R-X-X-R↓) by a member of the proprotein convertase family to generate sPRR, and a smaller C-terminal fragment, designated M8.9. It is unclear which convertase processes PRR in prostate cancer cells and how processing affects V-ATPase activity. In the current study we show that PRR is predominantly cleaved by PACE4, a proprotein convertase that has been previously implicated in prostate cancer. We further demonstrate that PTEN controls PRR processing in mouse tissue and controls PACE4 expression in prostate cancer cells. Furthermore, we demonstrate that PACE4 cleavage of PRR is needed for efficient V-ATPase activity and prostate cancer cell growth. Overall, our data highlight the importance of PACE4-mediated PRR processing in normal physiology and prostate cancer tumorigenesis.
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Affiliation(s)
- Amro H Mohammad
- Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
- Department of Biochemistry, McGill University, Montréal, Québec, Canada
| | - Frédéric Couture
- Department of Surgery/Urology, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Isabelle Gamache
- Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
| | - Owen Chen
- Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
- Department of Biochemistry, McGill University, Montréal, Québec, Canada
| | - Wissal El-Assaad
- Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
- Department of Biochemistry, McGill University, Montréal, Québec, Canada
| | - Nelly Abdel-Malak
- Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
- Department of Biochemistry, McGill University, Montréal, Québec, Canada
| | - Anna Kwiatkowska
- Department of Surgery/Urology, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - William Muller
- Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
- Department of Biochemistry, McGill University, Montréal, Québec, Canada
| | - Robert Day
- PhenoSwitch Bioscience, Sherbrooke, Québec, Canada
| | - Jose G Teodoro
- Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
- Department of Biochemistry, McGill University, Montréal, Québec, Canada
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4
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Feng J, Leng J, Zhao C, Guo J, Chen Y, Li H. High expression of 14-3-3ơ indicates poor prognosis and progression of lung adenocarcinoma. Oncol Lett 2022; 24:203. [PMID: 35720477 PMCID: PMC9178702 DOI: 10.3892/ol.2022.13323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/13/2022] [Indexed: 11/06/2022] Open
Abstract
Lung adenocarcinoma (LUAD) is one of the leading causes of cancer-related death worldwide. 14-3-3ơ is an intracellular phosphoserine-binding protein that has been proposed to be involved in tumorigenesis. However, the biofunctional role of 14-3-3ơ and its clinicopathological/prognostic significance in LUAD have remained elusive. In the present study, western blot and immunohistochemical analyses of cancer tissues/cells and the corresponding normal controls were performed to verify that 14-3-3ơ was upregulated in LUAD. Univariate and multivariate logistic regression analysis indicated that high expression of 14-3-3ơ predicted poor overall survival and progression-free survival of patients with LUAD. Furthermore, in vivo and in vitro experiments demonstrated that overexpression of 14-3-3ơ markedly promoted cell proliferation, colony formation, anchorage-independent growth and tumor growth, whereas 14-3-3ơ depletion produced the opposite effects. Of note, 14-3-3ơ was identified as an independent prognostic factor for patients with LUAD. Collectively, the present results revealed that high expression of 14-3-3ơ may serve as an independent biomarker, contributing to poor prognosis and progression of LUAD.
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Affiliation(s)
- Junfei Feng
- Department of Respiratory and Critical Care Medicine, The Third People's Hospital of Yunnan Province, Kunming, Yunnan 650011, P.R. China
| | - Jing Leng
- Department of Respiratory and Critical Care Medicine, The Third People's Hospital of Yunnan Province, Kunming, Yunnan 650011, P.R. China
| | - Changdi Zhao
- Department of Respiratory and Critical Care Medicine, The Third People's Hospital of Yunnan Province, Kunming, Yunnan 650011, P.R. China
| | - Jie Guo
- Department of Respiratory and Critical Care Medicine, The Third People's Hospital of Yunnan Province, Kunming, Yunnan 650011, P.R. China
| | - Yongbing Chen
- Department of Respiratory Medicine, People's Hospital of Beilun District, Ningbo, Zhejiang 315826, P.R. China
| | - Haifeng Li
- Department of Respiratory and Critical Care Medicine, The Third People's Hospital of Yunnan Province, Kunming, Yunnan 650011, P.R. China
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5
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Li MX, Sun XM, Cheng WG, Ruan HJ, Liu K, Chen P, Xu HJ, Gao SG, Feng XS, Qi YJ. Using a machine learning approach to identify key prognostic molecules for esophageal squamous cell carcinoma. BMC Cancer 2021; 21:906. [PMID: 34372798 PMCID: PMC8351329 DOI: 10.1186/s12885-021-08647-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 07/19/2021] [Indexed: 01/03/2023] Open
Abstract
Background A plethora of prognostic biomarkers for esophageal squamous cell carcinoma (ESCC) that have hitherto been reported are challenged with low reproducibility due to high molecular heterogeneity of ESCC. The purpose of this study was to identify the optimal biomarkers for ESCC using machine learning algorithms. Methods Biomarkers related to clinical survival, recurrence or therapeutic response of patients with ESCC were determined through literature database searching. Forty-eight biomarkers linked to recurrence or prognosis of ESCC were used to construct a molecular interaction network based on NetBox and then to identify the functional modules. Publicably available mRNA transcriptome data of ESCC downloaded from Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) datasets included GSE53625 and TCGA-ESCC. Five machine learning algorithms, including logical regression (LR), support vector machine (SVM), artificial neural network (ANN), random forest (RF) and XGBoost, were used to develop classifiers for prognostic classification for feature selection. The area under ROC curve (AUC) was used to evaluate the performance of the prognostic classifiers. The importances of identified molecules were ranked by their occurrence frequencies in the prognostic classifiers. Kaplan-Meier survival analysis and log-rank test were performed to determine the statistical significance of overall survival. Results A total of 48 clinically proven molecules associated with ESCC progression were used to construct a molecular interaction network with 3 functional modules comprising 17 component molecules. The 131,071 prognostic classifiers using these 17 molecules were built for each machine learning algorithm. Using the occurrence frequencies in the prognostic classifiers with AUCs greater than the mean value of all 131,071 AUCs to rank importances of these 17 molecules, stratifin encoded by SFN was identified as the optimal prognostic biomarker for ESCC, whose performance was further validated in another 2 independent cohorts. Conclusion The occurrence frequencies across various feature selection approaches reflect the degree of clinical importance and stratifin is an optimal prognostic biomarker for ESCC.
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Affiliation(s)
- Meng-Xiang Li
- School of Information Engineering of Henan University of Science and Technology, 263 Kaiyuan Road, Luolong Qu, Luoyang, 471023, P. R. China.,Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - Xiao-Meng Sun
- Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China.,The Sixth People's Hospital of Luoyang, Oncology Department, 14 Xiyuan Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - Wei-Gang Cheng
- Department of Thyroid and Breast Cancer Surgery, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - Hao-Jie Ruan
- Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - Ke Liu
- School of Information Engineering of Henan University of Science and Technology, 263 Kaiyuan Road, Luolong Qu, Luoyang, 471023, P. R. China.,Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - Pan Chen
- Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - Hai-Jun Xu
- Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - She-Gan Gao
- Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China
| | - Xiao-Shan Feng
- School of Information Engineering of Henan University of Science and Technology, 263 Kaiyuan Road, Luolong Qu, Luoyang, 471023, P. R. China. .,Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China.
| | - Yi-Jun Qi
- Henan Key Laboratory of Microbiome and Esophageal Cancer Prevention and Treatment; Henan Key Laboratory of Cancer Epigenetics, Cancer Hospital, The First Affiliated Hospital, College of Clinical Medicine, Medical College of Henan University of Science and Technology, 24 Jinghua Road, Jianxi Qu, Luoyang, 471003, P. R. China.
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6
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Bui T, Rennhack J, Mok S, Ling C, Perez M, Roccamo J, Andrechek ER, Moraes C, Muller WJ. Functional Redundancy between β1 and β3 Integrin in Activating the IR/Akt/mTORC1 Signaling Axis to Promote ErbB2-Driven Breast Cancer. Cell Rep 2020; 29:589-602.e6. [PMID: 31618629 DOI: 10.1016/j.celrep.2019.09.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 07/22/2019] [Accepted: 08/30/2019] [Indexed: 01/20/2023] Open
Abstract
Integrin receptors coordinate cell adhesion to the extracellular matrix (ECM) to facilitate many cellular processes during malignant transformation. Despite their pro-tumorigenic roles, therapies targeting integrins remain limited. Here, we provide genetic evidence supporting a functional redundancy between β1 and β3 integrin during breast cancer progression. Although ablation of β1 or β3 integrin alone has limited effects on ErbB2-driven mammary tumorigenesis, deletion of both receptors resulted in a significant delay in tumor onset with a corresponding impairment in lung metastasis. Mechanistically, stiff ECM cooperates with integrin receptors to recruit insulin receptors (IRs) to focal adhesion through the formation of integrin/IR complexes, thereby preventing their lysosomal degradation. β1/β3 integrin-deficient tumors that eventually emerged exhibit impaired Akt/mTORC1 activity. Murine and human breast cancers exhibiting enhanced integrin-dependent activity also display elevated IR/Akt/mTORC1 signaling activity. Together, these observations argue that integrin/IR crosstalk transduces mechanical cues from the tumor microenvironment to promote ErbB2-dependent breast cancer progression.
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Affiliation(s)
- Tung Bui
- Goodman Cancer Center, McGill University, Montreal, QC, Canada; Biochemistry Department, McGill University, Montreal, QC, Canada
| | - Jonathan Rennhack
- Physiology Department, Michigan State University, East Lansing, MI, USA
| | - Stephanie Mok
- Department of Chemical Engineering, McGill University, Montreal, QC, Canada
| | - Chen Ling
- Canadian Memorial Chiropractic College, Toronto, ON, Canada
| | - Marco Perez
- Goodman Cancer Center, McGill University, Montreal, QC, Canada
| | - Joshua Roccamo
- Goodman Cancer Center, McGill University, Montreal, QC, Canada
| | - Eran R Andrechek
- Physiology Department, Michigan State University, East Lansing, MI, USA
| | - Christopher Moraes
- Department of Chemical Engineering, McGill University, Montreal, QC, Canada
| | - William J Muller
- Goodman Cancer Center, McGill University, Montreal, QC, Canada; Biochemistry Department, McGill University, Montreal, QC, Canada; Faculty of Medicine, McGill University, Montreal, QC, Canada.
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7
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Amaya E, Alarcón L, Martín-Tapia D, Cuellar-Pérez F, Cano-Cortina M, Ortega-Olvera JM, Cisneros B, Rodriguez AJ, Gamba G, González-Mariscal L. Activation of the Ca 2+ sensing receptor and the PKC/WNK4 downstream signaling cascade induces incorporation of ZO-2 to tight junctions and its separation from 14-3-3. Mol Biol Cell 2019; 30:2377-2398. [PMID: 31318316 PMCID: PMC6741067 DOI: 10.1091/mbc.e18-09-0591] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Zonula occludens-2 (ZO-2) is a tight junction (TJ) cytoplasmic protein, whose localization varies according to cell density and Ca2+ in the media. In cells cultured in low calcium (LC), ZO-2 displays a diffuse cytoplasmic distribution, but activation of the Ca2+ sensing receptor (CaSR) with Gd3+ triggers the appearance of ZO-2 at the cell borders. CaSR downstream signaling involves activation of protein kinase C, which phosphorylates and activates with no lysine kinase-4 that phosphorylates ZO-2 inducing its concentration at TJs. In LC, ZO-2 is protected from degradation by association to 14-3-3 proteins. When monolayers are transferred to normal calcium, the complexes ZO-2/14-3-3ζ and ZO-2/14-3-3σ move to the cell borders and dissociate. The 14-3-3 proteins are then degraded in proteosomes, whereas ZO-2 integrates to TJs. From the plasma membrane residual ZO-2 is endocyted and degradaded in lysosomes. The unique region 2 of ZO-2, and S261 located within a nuclear localization signal, are critical for the interaction with 14-3-3 ζ and σ and for the efficient nuclear importation of ZO-2. These results explain the molecular mechanism through which extracellular Ca2+ triggers the appearance of ZO-2 at TJs in epithelial cells and reveal the novel interaction between ZO-2 and 14-3-3 proteins, which is critical for ZO-2 protection and intracellular traffic.
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Affiliation(s)
- Elida Amaya
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, Mexico City 07360, Mexico
| | - Lourdes Alarcón
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, Mexico City 07360, Mexico
| | - Dolores Martín-Tapia
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, Mexico City 07360, Mexico
| | - Francisco Cuellar-Pérez
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, Mexico City 07360, Mexico
| | - Misael Cano-Cortina
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, Mexico City 07360, Mexico
| | - Jose Mario Ortega-Olvera
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, Mexico City 07360, Mexico
| | - Bulmaro Cisneros
- Department of Genetics and Molecular Biology, Mexico City 07360, Mexico
| | - Alexis J Rodriguez
- Department of Biological Science, Rutgers, The State University of New Jersey, Newark, NJ 07102
| | - Gerardo Gamba
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City 14080, México.,Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico.,Tecnológico de Monterrey, Escuela de Medicina y Ciencias de la Salud, 64710 Monterrey, Nuevo Leon, México
| | - Lorenza González-Mariscal
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, Mexico City 07360, Mexico
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8
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Di Cara G, Marabeti MR, Musso R, Riili I, Cancemi P, Pucci Minafra I. New Insights into the Occurrence of Matrix Metalloproteases -2 and -9 in a Cohort of Breast Cancer Patients and Proteomic Correlations. Cells 2018; 7:cells7080089. [PMID: 30060564 PMCID: PMC6115737 DOI: 10.3390/cells7080089] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/19/2018] [Accepted: 07/24/2018] [Indexed: 01/01/2023] Open
Abstract
Matrix metalloproteases (MMPs) are a family of well-known enzymes which operate prevalently in the extracellular domain, where they fulfil the function of remodeling the extracellular matrix (ECM). Within the 26 family members, encoded by 24 genes in humans, MMP-2 and MMP-9 have been regarded as primarily responsible for the basement membrane and peri-cellular ECM rearrangement. In cases of infiltrating carcinomas, which arise from the epithelial tissues of a gland or of an internal organ, a marked alteration of the expression and the activity levels of both MMPs is known to occur. The present investigation represents the continuation and upgrading of our previous studies, now focusing on the occurrence and intensity levels of MMP-2 and -9 and their proteomic correlations in a cohort of 80 breast cancer surgical tissues.
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Affiliation(s)
- Gianluca Di Cara
- Centro di Oncobiologia Sperimentale, Università di Palermo, 90146 Palermo, Italy.
| | - Maria Rita Marabeti
- Centro di Oncobiologia Sperimentale, Università di Palermo, 90146 Palermo, Italy.
| | - Rosa Musso
- Centro di Oncobiologia Sperimentale, Università di Palermo, 90146 Palermo, Italy.
| | | | - Patrizia Cancemi
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Università di Palermo, 90100 Palermo, Italy.
| | - Ida Pucci Minafra
- Centro di Oncobiologia Sperimentale, Università di Palermo, 90146 Palermo, Italy.
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9
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Ji ZM, Yang LL, Ni J, Xu SP, Yang C, Duan P, Lou LP, Ruan QR. Silencing Filamin A Inhibits the Invasion and Migration of Breast Cancer Cells by Up-regulating 14-3-3σ. Curr Med Sci 2018; 38:461-466. [PMID: 30074213 DOI: 10.1007/s11596-018-1901-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/13/2018] [Indexed: 12/14/2022]
Abstract
Filamin A and 14-3-3-σ are closely associated with the development of breast cancer. However, the exact relationship between them is still unknown. The present study aimed to examine the interaction of filamin A with 14-3-3-σ in the invasion and migration of breast cancer. RNA interference technology was employed to silence filamin A in MDA-MB-231 cells. Real-time PCR and Western blotting were used to detect the expression of filamin A and 14-3-3-σ at mRNA and protein levels, respectively. Double immunofluorescence was applied to show their colocalization morphologically. Wound healing assay and Trans-well assay were used to testify the migration and invasion of MDA-MB-231 cells in filamin A-silenced cells. The results showed that silencing filamin A significantly increased the mRNA and protein levels of 14-3-3σ. In addition, double immunofluorescence displayed that filamin A and 14-3-3σ were predominantly colocalized in the cytoplasm of MDA-MB-231 cells. Silencing filamin A led to the enhanced fluorescence of 14-3-3σ. Furthermore, cell functional experiments showed that silencing filamin A inhibited the migration and invasion of MDA-MB-231 cells in vitro. In conclusion, silencing filamin A may inhibit the invasion and migration of breast cancer cells by upregulating 14-3-3σ.
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Affiliation(s)
- Zhi-Min Ji
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,Puren Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, 430080, China
| | - Li-Li Yang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Juan Ni
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - San-Peng Xu
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Cheng Yang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Pei Duan
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Li-Ping Lou
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Qiu-Rong Ruan
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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10
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Khorrami A, Sharif Bagheri M, Tavallaei M, Gharechahi J. The functional significance of 14-3-3 proteins in cancer: focus on lung cancer. Horm Mol Biol Clin Investig 2017; 32:/j/hmbci.ahead-of-print/hmbci-2017-0032/hmbci-2017-0032.xml. [PMID: 28779564 DOI: 10.1515/hmbci-2017-0032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 07/03/2017] [Indexed: 02/07/2023]
Abstract
The 14-3-3 family proteins are phosphoserine/phosphothreonine binding proteins constituting a conserved class of proteins which are detected in all eukaryotic cells. In mammalians, 14-3-3 proteins have seven distinct isoforms (β, γ, ε, η, ζ, σ and τ/θ) which are involved in various cellular processes including signal transduction, cell cycle, cell proliferation, apoptosis, differentiation and survival. 14-3-3 proteins do not have a distinct catalytic activity and often regulate the activity, stability, subcellular localization and interactions of other proteins. The 14-3-3 family proteins function through interacting with their client proteins or facilitating the interaction of other proteins likely as adaptor proteins. The versatile functions of these proteins in the regulation of cell growth, cell division, cell death and cell migration make them candidate proteins for which an important role in cancer development could be envisioned. Indeed, analysis of cancer cell lines and tumor-derived tissues have indicated the differential abundance or post-translational modification of some 14-3-3 isoforms. In this review, we aimed to show how deregulation of 14-3-3 proteins contributes to initiation, establishment and progression of cancers with a particular emphasis on lung cancer. The role of these proteins in cancer-relevant processes including cell cycle, cell migration, cell-cell communication and programmed cell death will be discussed in detail.
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Affiliation(s)
- Afshin Khorrami
- Human Genetics Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mahyar Sharif Bagheri
- Human Genetics Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mahmood Tavallaei
- Human Genetics Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Javad Gharechahi
- Human Genetics Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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11
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Retrospective Proteomic Screening of 100 Breast Cancer Tissues. Proteomes 2017; 5:proteomes5030015. [PMID: 28686225 PMCID: PMC5620532 DOI: 10.3390/proteomes5030015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 06/20/2017] [Accepted: 07/04/2017] [Indexed: 12/18/2022] Open
Abstract
The present investigation has been conducted on one hundred tissue fragments of breast cancer, collected and immediately cryopreserved following the surgical resection. The specimens were selected from patients with invasive ductal carcinoma of the breast, the most frequent and potentially aggressive type of mammary cancer, with the objective to increase the knowledge of breast cancer molecular markers potentially useful for clinical applications. The proteomic screening; by 2D-IPG and mass spectrometry; allowed us to identify two main classes of protein clusters: proteins expressed ubiquitously at high levels in all patients; and proteins expressed sporadically among the same patients. Within the group of ubiquitous proteins, glycolytic enzymes and proteins with anti-apoptotic activity were predominant. Among the sporadic ones, proteins involved in cell motility, molecular chaperones and proteins involved in the detoxification appeared prevalent. The data of the present study indicates that the primary tumor growth is reasonably supported by concurrent events: the inhibition of apoptosis and stimulation of cellular proliferation, and the increased expression of glycolytic enzymes with multiple functions. The second phase of the evolution of the tumor can be prematurely scheduled by the occasional presence of proteins involved in cell motility and in the defenses of the oxidative stress. We suggest that this approach on large-scale 2D-IPG proteomics of breast cancer is currently a valid tool that offers the opportunity to evaluate on the same assay the presence and recurrence of individual proteins, their isoforms and short forms, to be proposed as prognostic indicators and susceptibility to metastasis in patients operated on for invasive ductal carcinoma of the breast.
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12
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β-Catenin haploinsufficiency promotes mammary tumorigenesis in an ErbB2-positive basal breast cancer model. Proc Natl Acad Sci U S A 2017; 114:E707-E716. [PMID: 28096336 DOI: 10.1073/pnas.1610383114] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Aberrant activation of β-catenin through its activity as a transcription factor has been observed in a large proportion of human malignancies. Despite the improved understanding of the β-catenin signaling pathway over the past three decades, attempts to develop therapies targeting β-catenin remain challenging, and none of these targeted therapies have advanced to the clinic. In this study, we show that part of the challenge in antagonizing β-catenin is caused by its dual functionality as a cell adhesion molecule and a signaling molecule. In a mouse model of basal ErbB2 receptor tyrosine kinase 2 (ErbB2)-positive breast cancer (ErbB2KI), which exhibits aberrant β-catenin nuclear signaling, β-catenin haploinsufficiency induced aggressive tumor formation and metastasis by promoting the disruption of adherens junctions, dedifferentiation, and an epithelial to mesenchymal transition (EMT) transcriptional program. In contrast to the accelerated tumor onset observed in the haploid-insufficient ErbB2 tumors, deletion of both β-catenin alleles in the ErbB2KI model had only a minor impact on tumor onset that further correlated with the retention of normal adherens junctions. We further showed that retention of adherens junctional integrity was caused by the up-regulation of the closely related family member plakoglobin (γ-catenin) that maintained both adherens junctions and the activation of Wnt target genes. In contrast to the ErbB2KI basal tumor model, modulation of β-catenin levels had no appreciable impact on tumor onset in an ErbB2-driven model of luminal breast cancer [murine mammary tumor virus promoter (MMTV-NIC)]. These observations argue that the balance of junctional and nuclear β-catenin activity has a profound impact on tumor progression in this basal model of ErbB2-positive breast cancer.
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13
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Deletion of 14-3-3σ sensitizes mice to DMBA/TPA-induced papillomatosis. Oncotarget 2016; 7:46862-46870. [PMID: 27409835 PMCID: PMC5216908 DOI: 10.18632/oncotarget.10478] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 06/25/2016] [Indexed: 11/25/2022] Open
Abstract
The p53-inducible cell cycle regulator 14-3-3σ exhibits tumor suppressive functions and is highly expressed in differentiating layers of the epidermis and hair follicles. 14-3-3σ/SFN/stratifin is frequently silenced in human epithelial cancers, and experimental down-regulation of 14-3-3σ expression immortalizes primary human keratinocytes. In the repeated-epilation (ER) mouse model, a heterozygous nonsense mutation of 14-3-3σ causes repeated hair-loss, hyper-proliferative epidermis, and spontaneous development of papillomas and squamous cell carcinomas in aging mice. Therefore, loss of 14-3-3σ function might contribute to epithelial tumor development. Here, we generated mice with loxP sites surrounding the single 14-3-3σ exon which allowed Cre-mediated deletion of the gene. 14-3-3σ-deficient mice are viable, but demonstrate a permanently disheveled fur. However, histological analyses of the skin did not reveal obvious defects in the hair follicles or the epidermis. Deletion of 14-3-3σ did not enhance spontaneous epidermal tumor development, whereas it increased the frequency and size of DMBA/TPA-induced papillomas. In conclusion, 14-3-3σ is dispensable for normal epidermal homeostasis but critical for suppression of chemically-induced skin carcinogenesis. In addition, these results suggest that the ER mutation of 14-3-3σ is not equivalent to loss of 14-3-3σ, but may represent a gain-of-function variant, which does not reflect the organismal function of wild-type 14-3-3σ.
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14
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Raychaudhuri K, Chaudhary N, Gurjar M, D'Souza R, Limzerwala J, Maddika S, Dalal SN. 14-3-3σ Gene Loss Leads to Activation of the Epithelial to Mesenchymal Transition Due to the Stabilization of c-Jun Protein. J Biol Chem 2016; 291:16068-81. [PMID: 27261462 DOI: 10.1074/jbc.m116.723767] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Indexed: 12/21/2022] Open
Abstract
Loss of 14-3-3σ has been observed in multiple tumor types; however, the mechanisms by which 14-3-3σ loss leads to tumor progression are not understood. The experiments in this report demonstrate that loss of 14-3-3σ leads to a decrease in the expression of epithelial markers and an increase in the expression of mesenchymal markers, which is indicative of an induction of the epithelial to mesenchymal transition (EMT). The EMT was accompanied by an increase in migration and invasion in the 14-3-3σ(-/-) cells. 14-3-3σ(-/-) cells show increased stabilization of c-Jun, resulting in an increase in the expression of the EMT transcription factor slug. 14-3-3σ induces the ubiquitination and degradation of c-Jun in an FBW7-dependent manner. c-Jun ubiquitination is dependent on the presence of an intact nuclear export pathway as c-Jun is stabilized and localized to the nucleus in the presence of a nuclear export inhibitor. Furthermore, the absence of 14-3-3σ leads to the nuclear accumulation and stabilization of c-Jun, suggesting that 14-3-3σ regulates the subcellular localization of c-Jun. Our results have identified a novel mechanism by which 14-3-3σ maintains the epithelial phenotype by inhibiting EMT and suggest that this property of 14-3-3σ might contribute to its function as a tumor suppressor gene.
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Affiliation(s)
- Kumarkrishna Raychaudhuri
- From the KS215, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai 410210, India
| | - Neelam Chaudhary
- Laboratory of Cell Death and Cell Survival, Centre for DNA Fingerprinting and Diagnostics (CDFD), Nampally, Hyderabad 500001, India, and Graduate Studies, Manipal University, Manipal, Karnataka 576104, India
| | - Mansa Gurjar
- From the KS215, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai 410210, India
| | - Roseline D'Souza
- From the KS215, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai 410210, India
| | - Jazeel Limzerwala
- From the KS215, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai 410210, India
| | - Subbareddy Maddika
- Laboratory of Cell Death and Cell Survival, Centre for DNA Fingerprinting and Diagnostics (CDFD), Nampally, Hyderabad 500001, India, and
| | - Sorab N Dalal
- From the KS215, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai 410210, India,
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15
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Zhang H, Zhou GL. CAP1 (Cyclase-Associated Protein 1) Exerts Distinct Functions in the Proliferation and Metastatic Potential of Breast Cancer Cells Mediated by ERK. Sci Rep 2016; 6:25933. [PMID: 27173014 PMCID: PMC4865817 DOI: 10.1038/srep25933] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 04/22/2016] [Indexed: 12/14/2022] Open
Abstract
The actin-regulating protein CAP1 is implicated in the invasiveness of human cancers. However, the exact role remains elusive and controversial given lines of conflicting evidence. Moreover, a potential role in the proliferative transformation has largely been overlooked. Further establishing the role and dissecting underlying mechanisms are imperative before targeting CAP1 can become a possibility for cancer treatment. Here we report our findings that CAP1 exerts cell type-dependent functions in the invasiveness of breast cancer cells. Depletion of CAP1 in the metastatic MDA-MB-231 and BT-549 cancer cells stimulated the metastatic potential while it actually inhibited it in the non-metastatic MCF-7 cancer cells or in normal cells. Moreover, we demonstrate functions for CAP1 in cancer cell proliferation and anchorage-independent growth, again in a cell context-dependent manner. Importantly, we identify pivotal roles for the ERK-centered signaling in mediating both CAP1 functions. Phosphor mutants of CAP1 at the S307/S309 regulatory site had compromised rescue effects for both the invasiveness and proliferation in CAP1-knockdown cells, suggesting that CAP1 likely mediates upstream cell signals to control both functions. These novel mechanistic insights may ultimately open up avenues for strategies targeting CAP1 in the treatment of breast cancer, tailored for specific types of the highly diverse disease.
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Affiliation(s)
- Haitao Zhang
- Department of Biological Sciences, Arkansas State University, State University, AR 72467, USA.,Molecular Biosciences Program, Arkansas State University, State University, AR 72467, USA
| | - Guo-Lei Zhou
- Department of Biological Sciences, Arkansas State University, State University, AR 72467, USA.,Molecular Biosciences Program, Arkansas State University, State University, AR 72467, USA
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16
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Boulay PL, Mitchell L, Turpin J, Huot-Marchand JÉ, Lavoie C, Sanguin-Gendreau V, Jones L, Mitra S, Livingstone JM, Campbell S, Hallett M, Mills GB, Park M, Chodosh L, Strathdee D, Norman JC, Muller WJ. Rab11-FIP1C Is a Critical Negative Regulator in ErbB2-Mediated Mammary Tumor Progression. Cancer Res 2016; 76:2662-74. [PMID: 26933086 PMCID: PMC5070470 DOI: 10.1158/0008-5472.can-15-2782] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 02/05/2016] [Indexed: 02/06/2023]
Abstract
Rab coupling protein (FIP1C), an effector of the Rab11 GTPases, including Rab25, is amplified and overexpressed in 10% to 25% of primary breast cancers and correlates with poor clinical outcome. Rab25 is also frequently silenced in triple-negative breast cancer, suggesting its ability to function as either an oncogene or a tumor suppressor, depending on the breast cancer subtype. However, the pathobiologic role of FIP family members, such as FIP1C, in a tumor-specific setting remains elusive. In this study, we used ErbB2 mouse models of human breast cancer to investigate FIP1C function in tumorigenesis. Doxycycline-induced expression of FIP1C in the MMTV-ErbB2 mouse model resulted in delayed mammary tumor progression. Conversely, targeted deletion of FIP1C in the mammary epithelium of an ErbB2 model coexpressing Cre recombinase led to accelerated tumor onset. Genetic and biochemical characterization of these FIP1C-proficient and -deficient tumor models revealed that FIP1C regulated E-cadherin (CDH1) trafficking and ZONAB (YBX3) function in Cdk4-mediated cell-cycle progression. Furthermore, we demonstrate that FIP1C promoted lysosomal degradation of ErbB2. Consistent with our findings in the mouse, the expression of FIP1C was inversely correlated with ErbB2 levels in breast cancer patients. Taken together, our findings indicate that FIP1C acts as a tumor suppressor in the context of ErbB2-positive breast cancer and may be therapeutically exploited as an alternative strategy for targeting aberrant ErbB2 expression. Cancer Res; 76(9); 2662-74. ©2016 AACR.
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Affiliation(s)
- Pierre-Luc Boulay
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Louise Mitchell
- Integrin Cell Biology Cancer Research UK Beaston Institute, Glasgow, United Kingdom
| | - Jason Turpin
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Julie-Émilie Huot-Marchand
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Cynthia Lavoie
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Virginie Sanguin-Gendreau
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Laura Jones
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Shreya Mitra
- Department of System Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Julie M Livingstone
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Shirley Campbell
- Department of Pharmacology, University of Montreal, Québec, Canada
| | - Michael Hallett
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Gordon B Mills
- Department of System Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Morag Park
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada
| | - Lewis Chodosh
- Cancer Biology Family Cancer Research Institute, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Douglas Strathdee
- Integrin Cell Biology Cancer Research UK Beaston Institute, Glasgow, United Kingdom
| | - Jim C Norman
- Integrin Cell Biology Cancer Research UK Beaston Institute, Glasgow, United Kingdom
| | - William J Muller
- Department of Biochemistry, McGill University, Rosalind and Morris Goodman Cancer Research Montreal, Québec, Canada.
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17
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Mruk DD, Cheng CY. The Mammalian Blood-Testis Barrier: Its Biology and Regulation. Endocr Rev 2015; 36:564-91. [PMID: 26357922 PMCID: PMC4591527 DOI: 10.1210/er.2014-1101] [Citation(s) in RCA: 398] [Impact Index Per Article: 44.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 09/03/2015] [Indexed: 12/31/2022]
Abstract
Spermatogenesis is the cellular process by which spermatogonia develop into mature spermatids within seminiferous tubules, the functional unit of the mammalian testis, under the structural and nutritional support of Sertoli cells and the precise regulation of endocrine factors. As germ cells develop, they traverse the seminiferous epithelium, a process that involves restructuring of Sertoli-germ cell junctions, as well as Sertoli-Sertoli cell junctions at the blood-testis barrier. The blood-testis barrier, one of the tightest tissue barriers in the mammalian body, divides the seminiferous epithelium into 2 compartments, basal and adluminal. The blood-testis barrier is different from most other tissue barriers in that it is not only comprised of tight junctions. Instead, tight junctions coexist and cofunction with ectoplasmic specializations, desmosomes, and gap junctions to create a unique microenvironment for the completion of meiosis and the subsequent development of spermatids into spermatozoa via spermiogenesis. Studies from the past decade or so have identified the key structural, scaffolding, and signaling proteins of the blood-testis barrier. More recent studies have defined the regulatory mechanisms that underlie blood-testis barrier function. We review here the biology and regulation of the mammalian blood-testis barrier and highlight research areas that should be expanded in future studies.
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Affiliation(s)
- Dolores D Mruk
- Center for Biomedical Research, Population Council, New York, New York 10065
| | - C Yan Cheng
- Center for Biomedical Research, Population Council, New York, New York 10065
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18
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Xu J, Acharya S, Sahin O, Zhang Q, Saito Y, Yao J, Wang H, Li P, Zhang L, Lowery FJ, Kuo WL, Xiao Y, Ensor J, Sahin AA, Zhang XHF, Hung MC, Zhang JD, Yu D. 14-3-3ζ turns TGF-β's function from tumor suppressor to metastasis promoter in breast cancer by contextual changes of Smad partners from p53 to Gli2. Cancer Cell 2015; 27:177-92. [PMID: 25670079 PMCID: PMC4325275 DOI: 10.1016/j.ccell.2014.11.025] [Citation(s) in RCA: 137] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 09/10/2014] [Accepted: 11/24/2014] [Indexed: 12/01/2022]
Abstract
Transforming growth factor β (TGF-β) functions as a tumor suppressor in premalignant cells but as a metastasis promoter in cancer cells. The dichotomous functions of TGF-β are proposed to be dictated by different partners of its downstream effector Smads. However, the mechanism for the contextual changes of Smad partners remained undefined. Here, we demonstrate that 14-3-3ζ destabilizes p53, a Smad partner in premalignant mammary epithelial cells, by downregulating 14-3-3σ, thus turning off TGF-β's tumor suppression function. Conversely, 14-3-3ζ stabilizes Gli2 in breast cancer cells, and Gli2 partners with Smads to activate PTHrP and promote TGF-β-induced bone metastasis. The 14-3-3ζ-driven contextual changes of Smad partners from p53 to Gli2 may serve as biomarkers and therapeutic targets of TGF-β-mediated cancer progression.
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Affiliation(s)
- Jia Xu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sunil Acharya
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Ozgur Sahin
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Qingling Zhang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yohei Saito
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jun Yao
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hai Wang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ping Li
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lin Zhang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Frank J Lowery
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Wen-Ling Kuo
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yi Xiao
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Joe Ensor
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Aysegul A Sahin
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xiang H-F Zhang
- Lester and Sue Smith Breast Center and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA; Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung 404, Taiwan
| | - Jitao David Zhang
- Pharmaceutical Research and Early Development, F. Hoffmann-La Roche, Ltd., 4070 Basel, Switzerland
| | - Dihua Yu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA.
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19
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Dowling P, Hughes DJ, Larkin AM, Meiller J, Henry M, Meleady P, Lynch V, Pardini B, Naccarati A, Levy M, Vodicka P, Neary P, Clynes M. Elevated levels of 14-3-3 proteins, serotonin, gamma enolase and pyruvate kinase identified in clinical samples from patients diagnosed with colorectal cancer. Clin Chim Acta 2014; 441:133-41. [PMID: 25540887 DOI: 10.1016/j.cca.2014.12.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/12/2014] [Accepted: 12/05/2014] [Indexed: 11/16/2022]
Abstract
BACKGROUND Colorectal cancer (CRC), a heterogeneous disease that is common in both men and women, continues to be one of the predominant cancers worldwide. Lifestyle, diet, environmental factors and gene defects all contribute towards CRC development risk. Therefore, the identification of novel biomarkers to aid in the management of CRC is crucial. The aim of the present study was to identify candidate biomarkers for CRC, and to develop a better understanding of their role in tumourogenesis. METHODS In this study, both plasma and tissue samples from patients diagnosed with CRC, together with non-malignant and normal controls were examined using mass spectrometry based proteomics and metabolomics approaches. RESULTS It was established that the level of several biomolecules, including serotonin, gamma enolase, pyruvate kinase and members of the 14-3-3 family of proteins, showed statistically significant changes when comparing malignant versus non-malignant patient samples, with a distinct pattern emerging mirroring cancer cell energy production. CONCLUSION The diagnosis and management of CRC could be enhanced by the discovery and validation of new candidate biomarkers, as found in this study, aimed at facilitating early detection and/or patient stratification together with providing information on the complex behaviour of cancer cells.
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Affiliation(s)
- Paul Dowling
- Department of Biology, National University of Ireland, Maynooth, Maynooth, Co. Kildare, Ireland; National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - David J Hughes
- Department of Physiology and Medical Physics and Centre for Systems Medicine, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Anne Marie Larkin
- National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Justine Meiller
- National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Michael Henry
- National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Paula Meleady
- National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Vincent Lynch
- National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | | | | | - Miroslav Levy
- 1st Medical Faculty of Charles University and Thomayer University Hospital, Prague, Czech Republic
| | - Pavel Vodicka
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic; Institute of Biology and Medical Genetics, 1st Medical Faculty, Charles University, Prage, Czech Republic
| | - Paul Neary
- Department of Colorectal Surgery, AMNCH Hospital, Dublin 24, Ireland
| | - Martin Clynes
- National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
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20
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Li Y, Xu J, Xiong H, Ma Z, Wang Z, Kipreos ET, Dalton S, Zhao S. Cancer driver candidate genes AVL9, DENND5A and NUPL1 contribute to MDCK cystogenesis. Oncoscience 2014; 1:854-865. [PMID: 25621300 PMCID: PMC4303893 DOI: 10.18632/oncoscience.107] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 12/14/2014] [Indexed: 12/12/2022] Open
Abstract
AVL9, DENND5A and NUPL1 are among the cancer driver candidate genes previously identified via dog-human comparison, and may function in epithelial cell polarity as indicated by bioinformatics analysis. To better understand their cellular functions and roles in cancer, we knocked down each gene in MDCKII cells through shRNA and performed three-dimensional culture. Compared to the control, the knockdown clones developed significantly more abnormal cysts, e.g., cysts with the lumen harboring dead and/or live cells, or cysts having multiple lumens. Further analysis revealed that abnormalities initiated at the first cell division and persisted throughout the entire cystogenesis process. For NUPL1-knockdown cells, abnormal cytogenesis largely arose from faulty cell divisions, notably monopolar spindles or spindles with poorly separated poles. For AVL9- or DENND5A-knockdown cells, abnormalities originated from both aberrant intracellular trafficking and defective mitosis. Moreover, while all knockdown clones displayed an accelerated rate of both cell proliferation and death, only AVL9- and DENND5A-knockdowns, but not NUPL1-knockdown, promoted cell migration. These observations indicate that NUPL1 contributes to bipolar spindle formation, whereas AVL9 and DENND5A participate in both intracellular trafficking and cell cycle progression. Our study shed lights on these genes' normal cellular functions and on how their alteration contributes to carcinogenesis.
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Affiliation(s)
- Yaping Li
- Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens
| | - Jianing Xu
- Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens.,Current Address: Human Oncology & Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York
| | - Huan Xiong
- Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens
| | - Zhongyao Ma
- Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens
| | - Zhenghe Wang
- Department of Genetics & Genome Sciences and Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio
| | | | - Stephen Dalton
- Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens
| | - Shaying Zhao
- Department of Biochemistry and Molecular Biology, Institute of Bioinformatics, University of Georgia, Athens
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21
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Ngok SP, Lin WH, Anastasiadis PZ. Establishment of epithelial polarity--GEF who's minding the GAP? J Cell Sci 2014; 127:3205-15. [PMID: 24994932 DOI: 10.1242/jcs.153197] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Cell polarization is a fundamental process that underlies epithelial morphogenesis, cell motility, cell division and organogenesis. Loss of polarity predisposes tissues to developmental disorders and contributes to cancer progression. The formation and establishment of epithelial cell polarity is mediated by the cooperation of polarity protein complexes, namely the Crumbs, partitioning defective (Par) and Scribble complexes, with Rho family GTPases, including RhoA, Rac1 and Cdc42. The activation of different GTPases triggers distinct downstream signaling pathways to modulate protein-protein interactions and cytoskeletal remodeling. The spatio-temporal activation and inactivation of these small GTPases is tightly controlled by a complex interconnected network of different regulatory proteins, including guanine-nucleotide-exchange factors (GEFs), GTPase-activating proteins (GAPs), and guanine-nucleotide-dissociation inhibitors (GDIs). In this Commentary, we focus on current understanding on how polarity complexes interact with GEFs and GAPs to control the precise location and activation of Rho GTPases (Crumbs for RhoA, Par for Rac1, and Scribble for Cdc42) to promote apical-basal polarization in mammalian epithelial cells. The mutual exclusion of GTPase activities, especially that of RhoA and Rac1, which is well established, provides a mechanism through which polarity complexes that act through distinct Rho GTPases function as cellular rheostats to fine-tune specific downstream pathways to differentiate and preserve the apical and basolateral domains. This article is part of a Minifocus on Establishing polarity.
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Affiliation(s)
- Siu P Ngok
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Griffin Cancer Research Building, Room 307, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Wan-Hsin Lin
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Griffin Cancer Research Building, Room 307, 4500 San Pablo Road, Jacksonville, FL 32224, USA
| | - Panos Z Anastasiadis
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Griffin Cancer Research Building, Room 307, 4500 San Pablo Road, Jacksonville, FL 32224, USA
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22
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Qi YJ, Wang M, Liu RM, Wei H, Chao WX, Zhang T, Lou Q, Li XM, Ma J, Zhu H, Yang ZH, Liu HQ, Ma YF. Downregulation of 14-3-3σ correlates with multistage carcinogenesis and poor prognosis of esophageal squamous cell carcinoma. PLoS One 2014; 9:e95386. [PMID: 24743601 PMCID: PMC3990633 DOI: 10.1371/journal.pone.0095386] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 03/25/2014] [Indexed: 12/30/2022] Open
Abstract
Aims The asymptomatic nature of early-stage esophageal squamous cell carcinoma (ESCC) results in late presentation and consequent dismal prognosis This study characterized 14-3-3σ protein expression in the multi-stage development of ESCC and determined its correlation with clinical features and prognosis. Materials and Methods Western blot was used to examine 14-3-3σ protein expression in normal esophageal epithelium (NEE), low grade intraepithelial neoplasia (LGIN), high grade intraepithelial neoplasia (HGIN), ESCC of TNM I to IV stage and various esophageal epithelial cell lines with different biological behavior. Immunohistochemistry was used to estimate 14-3-3σ protein in 110 biopsy samples of NEE, LGIN or HGIN and in 168 ESCC samples all of whom had follow-up data. Support vector machine (SVM) was used to develop a classifier for prognosis. Results 14-3-3σ decreased progressively from NEE to LGIN, to HGIN, and to ESCC. Chemoresistant sub-lines of EC9706/PTX and EC9706/CDDP showed high expression of 14-3-3σ protein compared with non-chemoresistant ESCC cell lines and immortalized NEC. Furthermore, the downregulation of 14-3-3σ correlated significantly with histological grade (P = 0.000) and worse prognosis (P = 0.004). Multivariate Cox regression analysis indicated that 14-3-3σ protein (P = 0.016) and T stage (P = 0.000) were independent prognostic factors for ESCC. The SVM ESCC classifier comprising sex, age, T stage, histological grade, lymph node metastasis, clinical stage and 14-3-3σ, distinguished significantly lower- and higher-risk ESCC patients (91.67% vs. 3.62%, P = 0.000). Conclusions Downregulation of 14-3-3σ arises early in the development of ESCC and predicts poor survival, suggesting that 14-3-3σ may be a biomarker for early detection of high-risk subjects and diagnosis of ESCC. Our seven-feature SVM classifier for ESCC prognosis may help to inform clinical decisions and tailor individual therapy.
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Affiliation(s)
- Yi-Jun Qi
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Ming Wang
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Rui-Min Liu
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Hua Wei
- Huaihe Hospital, Henan University, Kaifeng, Henan, P. R. China
| | - Wei-Xia Chao
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Tian Zhang
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Qiang Lou
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Xiu-Min Li
- Xinxiang Medical University, Xinxiang, Henan, China
| | - Jin Ma
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Han Zhu
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
| | - Zhen-Hua Yang
- Linzhou Cancer Hospital, Linzhou, Henan, P. R. China
| | - Hai-Qing Liu
- Linzhou Cancer Hospital, Linzhou, Henan, P. R. China
| | - Yuan-Fang Ma
- Key Laboratory of Cellular and Molecular Immunology, College of Medicine, Henan University, Kaifeng, Henan, P. R. China
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23
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Pathak A, Kumar S. Transforming potential and matrix stiffness co-regulate confinement sensitivity of tumor cell migration. Integr Biol (Camb) 2014; 5:1067-75. [PMID: 23832051 DOI: 10.1039/c3ib40017d] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It is now well established that tumor cell invasion through tissue is strongly regulated by the microstructural and mechanical properties of the extracellular matrix (ECM). However, it remains unclear how these physical microenvironmental inputs are jointly processed with oncogenic lesions to drive invasion. In this study, we address this open question by combining a microfabricated polyacrylamide channel (μPAC) platform that enables independent control of ECM stiffness and confinement with an isogenically-matched breast tumor progression series in which the oncogenes ErbB2 and 14-3-3ζ are overexpressed independently or in tandem. We find that increasing channel confinement and overexpressing ErbB2 both promote cell migration to a similar degree when other parameters are kept constant. In contrast, 14-3-3ζ overexpression slows migration speed, and does so in a fashion that dwarfs effects of ECM confinement and stiffness. We also find that ECM stiffness dramatically enhances cell motility when combined with ErbB2 overexpression, demonstrating that biophysical cues and cell-intrinsic parameters promote cell invasion in an integrative manner. Morphometric analysis of cells inside the μPAC platform reveals that the rapid cell migration induced by narrow channels and ErbB2 overexpression are both accompanied by increased cell polarization. Disruption of this polarization occurs by pharmacological inhibition of Rac GTPase phenocopies 14-3-3ζ overexpression by reducing cell polarization and slowing migration. By systematically measuring migration speed as a function of matrix stiffness and confinement, we also quantify for the first time the sensitivity of migration speed to microchannel properties and transforming potential. These results demonstrate that oncogenic lesions and ECM biophysical properties can synergistically interact to drive invasive migration, and that both inputs may act through common molecular mechanisms to enhance migration speed.
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Affiliation(s)
- Amit Pathak
- Department of Bioengineering, University of California, Berkeley, CA 94720-1762, USA
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24
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Chatterjee SJ, McCaffrey L. Emerging role of cell polarity proteins in breast cancer progression and metastasis. BREAST CANCER-TARGETS AND THERAPY 2014; 6:15-27. [PMID: 24648766 PMCID: PMC3929326 DOI: 10.2147/bctt.s43764] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Breast cancer is a heterogeneous group of diseases that frequently exhibits loss of growth control, and disrupted tissue organization and differentiation. Several recent studies indicate that apical–basal polarity provides a tumor-suppressive function, and that disrupting polarity proteins affects many stages of breast cancer progression from initiation through metastasis. In this review we highlight some of the recent advances in our understanding of the molecular mechanisms by which loss of apical–basal polarity deregulates apoptosis, proliferation, and promotes invasion and metastasis in breast cancer.
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Affiliation(s)
- Sudipa June Chatterjee
- Rosalind and Morris Goodman Cancer Centre, Department of Oncology, McGill University, Montreal, QC, Canada
| | - Luke McCaffrey
- Rosalind and Morris Goodman Cancer Centre, Department of Oncology, McGill University, Montreal, QC, Canada
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25
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14-3-3σ stabilizes a complex of soluble actin and intermediate filament to enable breast tumor invasion. Proc Natl Acad Sci U S A 2013; 110:E3937-44. [PMID: 24067649 DOI: 10.1073/pnas.1315022110] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The protein 14-3-3σ (stratifin) is frequently described as a tumor suppressor silenced in about 80% of breast tumors. Intriguingly, we show that 14-3-3σ expression, which in normal breast is localized to the myoepithelial cells, tracks with malignant phenotype in two models of basal-like breast cancer progression, and in patients, it is associated with basal-like subtype and poor clinical outcome. We characterized a mechanism by which 14-3-3σ guides breast tumor invasion by integrating cytoskeletal dynamics: it stabilizes a complex of solubilized actin and intermediate filaments to maintain a pool of "bioavailable" complexes for polarized assembly during migration. We show that formation of the actin/cytokeratin/14-3-3σ complex and cellular migration are regulated by PKCζ-dependent phosphorylation, a finding that could form the basis for intervention in aggressive breast carcinomas expressing 14-3-3σ. Our data suggest that the biology of this protein is important in cellular movement and is contingent on breast cancer subtype.
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26
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Arsenic-induced cutaneous hyperplastic lesions are associated with the dysregulation of Yap, a Hippo signaling-related protein. Biochem Biophys Res Commun 2013; 438:607-12. [DOI: 10.1016/j.bbrc.2013.08.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 08/02/2013] [Indexed: 11/19/2022]
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27
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Met synergizes with p53 loss to induce mammary tumors that possess features of claudin-low breast cancer. Proc Natl Acad Sci U S A 2013; 110:E1301-10. [PMID: 23509284 DOI: 10.1073/pnas.1210353110] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Triple-negative breast cancer (TNBC) accounts for ∼20% of cases and contributes to basal and claudin-low molecular subclasses of the disease. TNBCs have poor prognosis, display frequent mutations in tumor suppressor gene p53 (TP53), and lack targeted therapies. The MET receptor tyrosine kinase is elevated in TNBC and transgenic Met models (Met(mt)) develop basal-like tumors. To investigate collaborating events in the genesis of TNBC, we generated Met(mt) mice with conditional loss of murine p53 (Trp53) in mammary epithelia. Somatic Trp53 loss, in combination with Met(mt), significantly increased tumor penetrance over Met(mt) or Trp53 loss alone. Unlike Met(mt) tumors, which are histologically diverse and enriched in a basal-like molecular signature, the majority of Met(mt) tumors with Trp53 loss displayed a spindloid pathology with a distinct molecular signature that resembles the human claudin-low subtype of TNBC, including diminished claudins, an epithelial-to-mesenchymal transition signature, and decreased expression of the microRNA-200 family. Moreover, although mammary specific loss of Trp53 promotes tumors with diverse pathologies, those with spindloid pathology and claudin-low signature display genomic Met amplification. In both models, MET activity is required for maintenance of the claudin-low morphological phenotype, in which MET inhibitors restore cell-cell junctions, rescue claudin 1 expression, and abrogate growth and dissemination of cells in vivo. Among human breast cancers, elevated levels of MET and stabilized TP53, indicative of mutation, correlate with highly proliferative TNBCs of poor outcome. This work shows synergy between MET and TP53 loss for claudin-low breast cancer, identifies a restricted claudin-low gene signature, and provides a rationale for anti-MET therapies in TNBC.
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28
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Xue B, Krishnamurthy K, Allred DC, Muthuswamy SK. Loss of Par3 promotes breast cancer metastasis by compromising cell-cell cohesion. Nat Cell Biol 2013; 15:189-200. [PMID: 23263278 PMCID: PMC4577246 DOI: 10.1038/ncb2663] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 11/27/2012] [Indexed: 12/11/2022]
Abstract
The mechanisms by which tumour cells metastasize and the role that cell polarity proteins play in this process are not well understood. We report that partitioning defective protein 3 (Par3) is dysregulated in metastasis in human breast cancer, and is associated with a higher tumour grade and ErbB2-positive status. Downregulation of Par3 cooperated with ErbB2 to induce cell invasion and metastasis in vivo. Interestingly, the metastatic behaviour was not associated with an overt mesenchymal phenotype. However, loss of Par3 inhibited E-cadherin junction stability, disrupted membrane and actin dynamics at cell-cell junctions and decreased cell-cell cohesion in a manner dependent on the Tiam1/Rac-GTP pathway. Inhibition of this pathway restored E-cadherin junction stability and blocked invasive behaviour of cells lacking Par3, suggesting that loss of Par3 promotes metastatic behaviour of ErbB2-induced tumour epithelial cells by decreasing cell-cell cohesion.
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Affiliation(s)
- Bin Xue
- Cold Spring Harbor Laboratory, One Bungtown Road, Cold Spring Harbor, NY
- Department of Molecular and Cellular Biology, Stony Brook University, Stony Brook, NY
| | | | - D. Craig Allred
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| | - Senthil K. Muthuswamy
- Cold Spring Harbor Laboratory, One Bungtown Road, Cold Spring Harbor, NY
- Department of Molecular and Cellular Biology, Stony Brook University, Stony Brook, NY
- Ontario Cancer Institute, Campbell Family Institute for Breast Cancer Research, University of Toronto, Toronto, Canada
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29
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Ngok SP, Geyer R, Kourtidis A, Storz P, Anastasiadis PZ. Phosphorylation-mediated 14-3-3 protein binding regulates the function of the rho-specific guanine nucleotide exchange factor (RhoGEF) Syx. J Biol Chem 2013; 288:6640-50. [PMID: 23335514 DOI: 10.1074/jbc.m112.432682] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Syx is a Rho-specific guanine nucleotide exchange factor (GEF) that localizes at cell-cell junctions and promotes junction stability by activating RhoA and the downstream effector Diaphanous homolog 1 (Dia1). Previously, we identified several molecules, including 14-3-3 proteins, as Syx-interacting partners. In the present study, we show that 14-3-3 isoforms interact with Syx at both its N- and C-terminal regions in a phosphorylation-dependent manner. We identify the protein kinase D-mediated phosphorylation of serine 92 on Syx, and additional phosphorylation at serine 938, as critical sites for 14-3-3 association. Our data indicate that the binding of 14-3-3 proteins inhibits the GEF activity of Syx. Furthermore, we show that phosphorylation-deficient, 14-3-3-uncoupled Syx exhibits increased junctional targeting and increased GEF activity, resulting in the strengthening of the circumferential junctional actin ring in Madin-Darby canine kidney cells. These findings reveal a novel means of regulating junctional Syx localization and function by phosphorylation-induced 14-3-3 binding and further support the importance of Syx function in maintaining stable cell-cell contacts.
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Affiliation(s)
- Siu P Ngok
- Department of Cancer Biology, Mayo Clinic Comprehensive Cancer Center, Jacksonville, Florida 32224, USA
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30
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Hynes NE, Smirnova T. The 14-3-3σ tumor suppressor has multiple functions in ErbB2-induced breast cancer. Cancer Discov 2013; 2:19-22. [PMID: 22585164 DOI: 10.1158/2159-8290.cd-11-0317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ling and colleagues demonstrated that loss of the conditional 14-3-3σ allele results in accelerated HER2/ERBB2-driven mammary tumorigenesis and metastasis. This study underscores the role of 14-3-3σ as a potent tumor suppressor in ERBB2-driven tumor initiation and progression.
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Affiliation(s)
- Nancy E Hynes
- Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, CH-4058 Basel, Switzerland.
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31
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Cheng S, Zhang M, Li W, Wang Y, Liu Y, He Q. Proteomic analysis of porcine alveolar macrophages infected with porcine circovirus type 2. J Proteomics 2012; 75:3258-69. [DOI: 10.1016/j.jprot.2012.03.039] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 03/06/2012] [Accepted: 03/23/2012] [Indexed: 01/20/2023]
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32
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The ShcA SH2 domain engages a 14-3-3/PI3′K signaling complex and promotes breast cancer cell survival. Oncogene 2012; 31:5038-44. [DOI: 10.1038/onc.2012.4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Assadian S, El-Assaad W, Wang XQD, Gannon PO, Barrès V, Latour M, Mes-Masson AM, Saad F, Sado Y, Dostie J, Teodoro JG. p53 inhibits angiogenesis by inducing the production of Arresten. Cancer Res 2012; 72:1270-9. [PMID: 22253229 DOI: 10.1158/0008-5472.can-11-2348] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Several types of collagen contain cryptic antiangiogenic noncollagenous domains that are released upon proteolysis of extracellular matrix (ECM). Among those is Arresten, a collagen-derived antiangiogenic factor (CDAF) that is processed from α1 collagen IV. However, the conditions under which Arresten is released from collagen IV in vivo or whether the protein functions in tumor suppressor pathways remain unknown. Here, we show that p53 induces the expression of α1 collagen IV and release of Arresten-containing fragments from the ECM. Comparison of the transcriptional activation of COL4A1 with other CDAF-containing genes revealed that COL4A1 is a major antiangiogenic gene induced by p53 in human adenocarinoma cells. p53 directly activated transcription of the COL4A1 gene by binding to an enhancer region 26 kbp downstream of its 3' end. p53 also stabilized the expression of full-length α1 collagen IV by upregulation of α(II) prolyl-hydroxylase and increased the release of Arresten in the ECM through a matrix metalloproteinase (MMP)-dependent mechanism. The resulting upregulation of α1 collagen IV and production of Arresten by the tumor cells significantly inhibited angiogenesis and limited tumor growth in vivo. Furthermore, we show that immunostaining of Arresten correlated with p53 status in human prostate cancer specimens. Our findings, therefore, link the production of Arresten to the p53 tumor suppressor pathway and show a novel mechanism through which p53 can inhibit angiogenesis.
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Affiliation(s)
- Sarah Assadian
- Goodman Cancer Research Center, Department of Biochemistry, McGill University, Montréal, Québec, Canada
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34
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Zheng G, Xiong Y, Yi S, Zhang W, Peng B, Zhang Q, He Z. 14-3-3σ regulation by p53 mediates a chemotherapy response to 5-fluorouracil in MCF-7 breast cancer cells via Akt inactivation. FEBS Lett 2011; 586:163-8. [PMID: 22192357 DOI: 10.1016/j.febslet.2011.11.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Revised: 11/22/2011] [Accepted: 11/27/2011] [Indexed: 01/26/2023]
Abstract
We previously demonstrated that 14-3-3σ was downregulated in 5-fluorouracil (5-Fu)-resistant MCF-7 breast cancer cells (MCF-7/5-Fu). Here, we found that stably enhanced 14-3-3σ expression strengthened the effects of 5-Fu, Mitoxantrone and cDDP. 14-3-3σ stabilised the p53 protein and bound Akt to inhibit its activity and its downstream targets: survivin, Bcl-2 and NF-κB-p50. In addition, decreased p53 expression, but not promoter hypermethylation, was responsible for the downregulation of 14-3-3σ in MCF-7/5-Fu cells. Meanwhile, initial treatments with high concentrations of 5-Fu clearly induced 14-3-3σ and p53 expression in a time-dependent manner. 14-3-3σ-mediated molecular events that synergise with p53 may play important roles in the chemotherapy of breast cancer.
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Affiliation(s)
- Guopei Zheng
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, PR China
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35
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Ling C, Su VMT, Zuo D, Muller WJ. Loss of the 14-3-3σ tumor suppressor is a critical event in ErbB2-mediated tumor progression. Cancer Discov 2011; 2:68-81. [PMID: 22585169 DOI: 10.1158/2159-8290.cd-11-0189] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
UNLABELLED 14-3-3σ is a putative tumor suppressor involved in cell-cycle progression and epithelial polarity. We demonstrate that loss of one or both copies of the conditional 14-3-3σ allele results in accelerated mammary and salivary tumorigenesis in mice expressing an activated erbB2 oncogene under the endogenous erbB2 promoter. Significantly, the majority of tumors bearing a single conditional 14-3-3σ allele lose expression of the remaining 14-3-3σ allele, which is associated with epigenetic methylation of the 14-3-3σ locus. In addition to accelerated tumor onset, in a mouse mammary tumor virus-driven ErbB2 tumor model, loss of 14-3-3σ results in enhanced metastatic phenotype that is correlated with loss of cellular junctions. Taken together, these results provide compelling evidence that 14-3-3σ is a potent tumor suppressor involved in ErbB2-driven breast cancer initiation and metastasis. SIGNIFICANCE 14-3-3σ has been identified as a normal mammary epithelial cell marker frequently downregulated during neoplastic development. Consistent with its potential role as a tumor suppressor, we demonstrate that targeted disruption of 14-3-3σ in a number of epithelial tissues can profoundly impact both the initiation and metastatic phases of ErbB2-mediated tumor progression through modulation of a number of distinct signaling networks.
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Affiliation(s)
- Chen Ling
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
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36
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Freeman AK, Morrison DK. 14-3-3 Proteins: diverse functions in cell proliferation and cancer progression. Semin Cell Dev Biol 2011; 22:681-7. [PMID: 21884813 PMCID: PMC3221730 DOI: 10.1016/j.semcdb.2011.08.009] [Citation(s) in RCA: 190] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Accepted: 08/16/2011] [Indexed: 12/27/2022]
Abstract
The 14-3-3 proteins were the first phosphoserine/phosphothreonine-binding proteins to be discovered, a finding that provided the foundation for their prominent role in cell signaling. 14-3-3 family members interact with a wide spectrum of proteins including transcription factors, biosynthetic enzymes, cytoskeletal proteins, signaling molecules, apoptosis factors, and tumor suppressors. The interaction with 14-3-3 can have a profound effect on a target protein, altering its localization, stability, conformation, phosphorylation state, activity, and/or molecular interactions. Thus, by modulating the function of a diverse array of binding partners, 14-3-3 proteins have become key regulatory components in many vital cellular processes - processes that are crucial for normal growth and development and that often become dysregulated in human cancer. This review will examine the recent advances that further elucidate the role of 14-3-3 proteins in normal growth and cancer signaling with a particular emphasis on the signaling pathways that impact cell proliferation, cell migration, and epithelial-to-mesenchymal transition.
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Affiliation(s)
- Alyson K. Freeman
- Laboratory of Cell and Developmental Signaling, NCI-Frederick, Frederick, MD 21702
| | - Deborah K. Morrison
- Laboratory of Cell and Developmental Signaling, NCI-Frederick, Frederick, MD 21702
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Herr R, Wöhrle FU, Danke C, Berens C, Brummer T. A novel MCF-10A line allowing conditional oncogene expression in 3D culture. Cell Commun Signal 2011; 9:17. [PMID: 21752278 PMCID: PMC3163222 DOI: 10.1186/1478-811x-9-17] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Accepted: 07/13/2011] [Indexed: 11/18/2022] Open
Affiliation(s)
- Ricarda Herr
- Centre for Biological Systems Analysis (ZBSA), Albert-Ludwigs-University Freiburg, Habsburgerstraße 49, 79104 Freiburg, Germany.
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Nieto MA. The ins and outs of the epithelial to mesenchymal transition in health and disease. Annu Rev Cell Dev Biol 2011; 27:347-76. [PMID: 21740232 DOI: 10.1146/annurev-cellbio-092910-154036] [Citation(s) in RCA: 551] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The epithelial to mesenchymal transition (EMT) converts epithelial cells into migratory and invasive cells and is a fundamental event in morphogenesis. Although its relevance in the progression of cancer and organ fibrosis had been debated until recently, the EMT is now established as an important step in the metastatic cascade of epithelial tumors. The similarities between pathological and developmental EMTs validate the embryo as the best model to understand the molecular and cellular mechanisms involved in this process, identifying those that are hijacked during the progression of cancer and organ degeneration. Our ever-increasing understanding of how transcription factors regulate the EMT has revealed complex regulatory loops coupled to posttranscriptional and epigenetic regulatory programs. The EMT is now integrated into the systemic activities of whole organisms, establishing links with cell survival, stemness, inflammation, and immunity. In addition, the EMT now constitutes a promising target for the treatment of cancer and organ-degenerative diseases.
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Affiliation(s)
- M Angela Nieto
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas-Universidad Miguel Hernández, San Juan de Alicante 03550, Spain.
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