1
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Berg Luecke L, Mesidor R, Littrell J, Carpenter M, Wojtkiewicz M, Gundry RL. Veneer Is a Webtool for Rapid, Standardized, and Transparent Interpretation, Annotation, and Reporting of Mammalian Cell Surface N-Glycocapture Data. J Proteome Res 2024; 23:3235-3248. [PMID: 38412263 PMCID: PMC11301670 DOI: 10.1021/acs.jproteome.3c00800] [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: 11/17/2023] [Revised: 01/23/2024] [Accepted: 02/12/2024] [Indexed: 02/29/2024]
Abstract
Currently, no consensus exists regarding criteria required to designate a protein within a proteomic data set as a cell surface protein. Most published proteomic studies rely on varied ontology annotations or computational predictions instead of experimental evidence when attributing protein localization. Consequently, standardized approaches for analyzing and reporting cell surface proteome data sets would increase confidence in localization claims and promote data use by other researchers. Recently, we developed Veneer, a web-based bioinformatic tool that analyzes results from cell surface N-glycocapture workflows─the most popular cell surface proteomics method used to date that generates experimental evidence of subcellular location. Veneer assigns protein localization based on defined experimental and bioinformatic evidence. In this study, we updated the criteria and process for assigning protein localization and added new functionality to Veneer. Results of Veneer analysis of 587 cell surface N-glycocapture data sets from 32 published studies demonstrate the importance of applying defined criteria when analyzing cell surface proteomics data sets and exemplify how Veneer can be used to assess experimental quality and facilitate data extraction for informing future biological studies and annotating public repositories.
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Affiliation(s)
- Linda Berg Luecke
- CardiOmics
Program, Center for Heart and Vascular Research and Department of
Cellular and Integrative Physiology, University
of Nebraska Medical Center, Omaha, Nebraska 68198, United States
- Department
of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, United States
| | - Roneldine Mesidor
- CardiOmics
Program, Center for Heart and Vascular Research and Department of
Cellular and Integrative Physiology, University
of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Jack Littrell
- CardiOmics
Program, Center for Heart and Vascular Research and Department of
Cellular and Integrative Physiology, University
of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Morgan Carpenter
- CardiOmics
Program, Center for Heart and Vascular Research and Department of
Cellular and Integrative Physiology, University
of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Melinda Wojtkiewicz
- CardiOmics
Program, Center for Heart and Vascular Research and Department of
Cellular and Integrative Physiology, University
of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Rebekah L. Gundry
- CardiOmics
Program, Center for Heart and Vascular Research and Department of
Cellular and Integrative Physiology, University
of Nebraska Medical Center, Omaha, Nebraska 68198, United States
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2
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Bai D, Liang Y, Liu W, Liu Y, Wang Z. A case report of anterior mediastinal angiomyolipoma that invaded the left thoracic cavity. Medicine (Baltimore) 2023; 102:e35786. [PMID: 37904415 PMCID: PMC10615488 DOI: 10.1097/md.0000000000035786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/04/2023] [Indexed: 11/01/2023] Open
Abstract
RATIONALE Angiomyolipoma is a mesenchymal tumor composed of blood vessels, smooth muscle, and mature adipose tissue. It is most commonly found in the kidney, and is rare outside the kidney, especially in the mediastinum. Only about 12 cases have been reported worldwide so far. PATIENT CONCERNS We report a young female patient who had been found with a left thoracic mass for 19 years. In the past 19 years, the patient had no chest pain, dyspnea and other symptoms, but this time she visited the doctor because of cough, and there were no other clinical signs. DIAGNOSES The patient underwent computed tomography plain scan and enhanced scan after admission with imaging manifestations of a mixed density mass in the left chest cavity, calcification and fat density in the inside, and tortuous blood vessels after enhancement. Combined with imaging, the diagnosis was teratoma, not excluding hamartoma. INTERVENTIONS The patient underwent a central open thoracic giant mass resection. OUTCOMES The postoperative pathology confirmed that it was angiomyolipoma originating from anterior mediastinum invasion of the left chest cavity, and no clear recurrence was seen after 1 year of postoperative follow-up. LESSONS Angiomyolipomas in the mediastinum are rare, especially those that invade the thorax. This article describes the clinical, imaging and pathological features of the patient in detail, which improves the understanding of the disease of clinical and imaging doctors, and provides a basis for the differential diagnosis of mediastinal lesions.
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Affiliation(s)
- Dong Bai
- Department of Radiology, Aerospace Center Hospital, Beijing, China
| | - Yuanzi Liang
- Department of Radiology, Aerospace Center Hospital, Beijing, China
| | - Wenting Liu
- Department of Pathology, Aerospace Center Hospital, Beijing, China
| | - Yanhan Liu
- Department of Radiology, Aerospace Center Hospital, Beijing, China
| | - Zhiqun Wang
- Department of Radiology, Aerospace Center Hospital, Beijing, China
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3
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Poolsri W, Noitem R, Jutabha P, Raveesunthornkiat M, Danova A, Chavasiri W, Muanprasat C. Discovery of a chalcone derivative as an anti-fibrotic agent targeting transforming growth factor-β1 signaling: Potential therapy of renal fibrosis. Biomed Pharmacother 2023; 165:115098. [PMID: 37437378 DOI: 10.1016/j.biopha.2023.115098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/25/2023] [Accepted: 06/27/2023] [Indexed: 07/14/2023] Open
Abstract
As a final common pathway of renal injuries, renal fibrosis leads to chronic kidney disease (CKD). Currently, there is no safe and effective therapy to prevent the progression of renal fibrosis to CKD. Inhibition of transforming growth factor-β1 (TGF-β1) pathway is proposed as one of the most promising approaches for anti-renal fibrosis therapies. This study aimed to identify novel anti-fibrotic agents using the TGF-β1-induced fibrosis in renal proximal tubule epithelial cells (RPTEC) and characterize their mechanism of action as well as in vivo efficacy. By screening 362 natural product-based compounds for their ability to reduce collagen accumulation assessed by picro-sirius red (PSR) staining in RPTEC cells, a chalcone derivative AD-021 was identified as an anti-fibrotic agent with IC50 of 14.93 μM. AD-021 suppressed TGF-β1-induced collagen production, expression of pro-fibrotic proteins (fibronectin and α-smooth muscle actin (αSMA)), and Smad-dependent and Smad-independent signaling pathways via suppression of TGF-β receptor II (TGFβRII) phosphorylation in RPTEC cells. Furthermore, TGF-β1-induced mitochondrial fission in RPTEC cells was ameliorated by AD-021 via mechanisms involving inhibition of Drp1 phosphorylation. In a mouse model of unilateral ureteral obstruction (UUO)-induced renal fibrosis, AD-021 reduced plasma TGF-β1, ameliorated renal fibrosis and improved renal function. Collectively, AD-021 represents a novel class of natural product-based anti-fibrotic agent that has therapeutic potential in the prevention of fibrosis-associated renal disorders including CKD.
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Affiliation(s)
- Wanangkan Poolsri
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Ratchathewi, Bangkok, Thailand; Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bang Phli, Samut Prakarn, Thailand
| | - Rattikarn Noitem
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Ratchathewi, Bangkok, Thailand; Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bang Phli, Samut Prakarn, Thailand
| | - Promsuk Jutabha
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bang Phli, Samut Prakarn, Thailand
| | | | - Ade Danova
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand; Organic Chemistry Division, Department of Chemistry, Faculty of Mathematics and Natural, 16 Sciences, Institut Teknologi Bandung, Ganesa No.10, West Java, Indonesia
| | - Warinthorn Chavasiri
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Chatchai Muanprasat
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bang Phli, Samut Prakarn, Thailand.
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4
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An Overview of Epithelial-to-Mesenchymal Transition and Mesenchymal-to-Epithelial Transition in Canine Tumors: How Far Have We Come? Vet Sci 2022; 10:vetsci10010019. [PMID: 36669020 PMCID: PMC9865109 DOI: 10.3390/vetsci10010019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/23/2022] [Accepted: 12/24/2022] [Indexed: 12/31/2022] Open
Abstract
Historically, pre-clinical and clinical studies in human medicine have provided new insights, pushing forward the contemporary knowledge. The new results represented a motivation for investigators in specific fields of veterinary medicine, who addressed the same research topics from different perspectives in studies based on experimental and spontaneous animal disease models. The study of different pheno-genotypic contexts contributes to the confirmation of translational models of pathologic mechanisms. This review provides an overview of EMT and MET processes in both human and canine species. While human medicine rapidly advances, having a large amount of information available, veterinary medicine is not at the same level. This situation should provide motivation for the veterinary medicine research field, to apply the knowledge on humans to research in pets. By merging the knowledge of these two disciplines, better and faster results can be achieved, thus improving human and canine health.
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5
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Bahcecioglu G, Yue X, Howe E, Guldner I, Stack MS, Nakshatri H, Zhang S, Zorlutuna P. Aged Breast Extracellular Matrix Drives Mammary Epithelial Cells to an Invasive and Cancer-Like Phenotype. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100128. [PMID: 34617419 PMCID: PMC8596116 DOI: 10.1002/advs.202100128] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 07/26/2021] [Indexed: 05/04/2023]
Abstract
Age is a major risk factor for cancer. While the importance of age related genetic alterations in cells on cancer progression is well documented, the effect of aging extracellular matrix (ECM) has been overlooked. This study shows that the aging breast ECM alone is sufficient to drive normal human mammary epithelial cells (KTB21) to a more invasive and cancer-like phenotype, while promoting motility and invasiveness in MDA-MB-231 cells. Decellularized breast matrix from aged mice leads to loss of E-cadherin membrane localization in KTB21 cells, increased cell motility and invasion, and increased production of inflammatory cytokines and cancer-related proteins. The aged matrix upregulates cancer-related genes in KTB21 cells and enriches a cell subpopulation highly expressing epithelial-mesenchymal transition-related genes. Lysyl oxidase knockdown reverts the aged matrix-induced changes to the young levels; it relocalizes E-cadherin to cell membrane, and reduces cell motility, invasion, and cytokine production. These results show for the first time that the aging ECM harbors key biochemical, physical, and mechanical cues contributing to invasive and cancer-like behavior in healthy and cancer mammary cells. Differential response of cells to young and aged ECMs can lead to identification of new targets for cancer treatment and prevention.
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Affiliation(s)
- Gokhan Bahcecioglu
- Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameIN46556USA
| | - Xiaoshan Yue
- Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameIN46556USA
| | - Erin Howe
- Harper Cancer Research InstituteUniversity of Notre DameNotre DameIN46556USA
- Department of Biological SciencesUniversity of Notre DameNotre DameIN46556USA
| | - Ian Guldner
- Harper Cancer Research InstituteUniversity of Notre DameNotre DameIN46556USA
- Department of Biological SciencesUniversity of Notre DameNotre DameIN46556USA
| | - M. Sharon Stack
- Harper Cancer Research InstituteUniversity of Notre DameNotre DameIN46556USA
- Department of Chemistry and BiochemistryUniversity of Notre DameNotre DameIN46556USA
| | - Harikrishna Nakshatri
- Department of SurgerySchool of MedicineIndiana UniversityIndianapolisIN46202USA
- Department of Biochemistry and Molecular BiologySchool of MedicineIndiana UniversityIndianapolisIN46202USA
| | - Siyuan Zhang
- Harper Cancer Research InstituteUniversity of Notre DameNotre DameIN46556USA
- Department of Biological SciencesUniversity of Notre DameNotre DameIN46556USA
| | - Pinar Zorlutuna
- Department of Aerospace and Mechanical EngineeringUniversity of Notre DameNotre DameIN46556USA
- Harper Cancer Research InstituteUniversity of Notre DameNotre DameIN46556USA
- Bioengineering Graduate ProgramUniversity of Notre DameNotre DameIN46556USA
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6
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Liang S, Yadav M, Vogel KS, Habib SL. A novel role of snail in regulating tuberin/AMPK pathways to promote renal fibrosis in the new mouse model of type II diabetes. FASEB Bioadv 2021; 3:730-743. [PMID: 34485841 PMCID: PMC8409551 DOI: 10.1096/fba.2020-00134] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/25/2021] [Accepted: 04/14/2021] [Indexed: 01/01/2023] Open
Abstract
Epithelial-mesenchymal transition (EMT) plays an important role in tissue fibrosis following chronic exposure to hyperglycemia. This study investigates the role of chronic diabetes in regulating tuberin/snail/AMPK to enhance EMT and increase renal fibrosis. A new mouse model of db/db/TSC2 +/- was generated by backcrossing db/db mice and TSC2 +/- mice. Wild type (WT), db/db, TSC2 +/- and dbdb/TSC2 +/- mice were sacrificed at ages 6 and 8 months old. Tuberin protein level was significantly decreased in kidneys from diabetic compared to WT mice at both ages. In addition, tuberin and E-cadherin protein levels were significantly decreased in dbdb/TSC2 +/- compared to TSC2 +/- and db/db mice. In contrast, p-PS6K, NFkB, snail, vimentin, fibronectin, and α-SMA protein levels were significantly increased in dbdb/TSC2 +/- compared to db/db and TSC2 +/- mice at ages 6 and 8 months. Both downregulation of AMPK by DN-AMPK and downregulation of tuberin by siRNA resulted in increased NFkB, snail, and fibronectin protein expression and decreased E-cadherin protein expression in mouse primary renal proximal tubular cells. Interestingly, downregulation of snail by siRNA increased tuberin expression via feedback through activation of AMPK and reversed the expression of epithelial proteins such as E-cadherin as well as mesenchymal proteins such as fibronectin, NF-KB, vimentin, and α-SMA in mouse primary renal proximal tubular cells isolated from kidneys of four mice genotypes. The data show that chronic diabetes significantly decreases tuberin expression and that provides strong evidence that tuberin is a major key protein involved in regulating EMT. These data also demonstrated a novel role for snail in regulating of AMPK/tuberin to enhance EMT and renal cell fibrosis in diabetes.
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Affiliation(s)
- Sitai Liang
- Department of Cell Systems and Anatomy The University of Texas Health Science Center San Antonio Texas USA
| | - Mukesh Yadav
- Department of Cell Systems and Anatomy The University of Texas Health Science Center San Antonio Texas USA
| | - Kristine S Vogel
- Department of Cell Systems and Anatomy The University of Texas Health Science Center San Antonio Texas USA
| | - Samy L Habib
- Department of Cell Systems and Anatomy The University of Texas Health Science Center San Antonio Texas USA.,South Texas, Veterans Healthcare System San Antonio Texas USA
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7
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Cai X, Fan Q, Kang GS, Grolig K, Shen X, Billings EM, Pacheco-Rodriguez G, Darling TN, Moss J. Long-Term Effects of Sirolimus on Human Skin TSC2-Null Fibroblast‒Like Cells. J Invest Dermatol 2021; 141:2291-2299.e2. [PMID: 33773987 PMCID: PMC9942268 DOI: 10.1016/j.jid.2021.02.754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 02/05/2021] [Accepted: 02/23/2021] [Indexed: 11/26/2022]
Abstract
Tuberous sclerosis complex (TSC) is an autosomal-dominant disorder characterized by hamartomatous tumors of the skin, kidneys, brain, and lungs. TSC is caused by mutations in the TSC1 and TSC2 genes, which result in hyperactivation of the mTOR, leading to dysregulated cell growth and autophagy. Rapamycin (sirolimus) shrinks TSC tumors, but the clinical benefits of sirolimus are not sustained after its withdrawal. In this study, we studied the cellular processes critical for tumor formation and growth, including cell proliferation and cell size. TSC2-/- and TSC2+/- cells were isolated from TSC skin tumors and normal-appearing skin, respectively. Cells were incubated with sirolimus for 72 hours. Withdrawal of sirolimus from TSC2-/- cells resulted in a highly proliferative phenotype and caused cells to enter the S phase of the cell cycle, with persistent phosphorylation of mTOR, p70 S6 kinase, ribosomal protein S6, and 4EB-P1; decreased cyclin D kinase inhibitors; and transient hyperactivation of protein kinase B. Sirolimus modulated the estrogen- and autophagy-dependent volume of TSC2-/- cells. These results suggest that sirolimus may decrease the size of TSC tumors by reducing TSC2-/- cell volume, altering the cell cycle, and reprogramming TSC2-null cells.
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Affiliation(s)
- Xiong Cai
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA,Hunan University of Chinese Medicine, Changsha, China
| | - Qingyuan Fan
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA,Department of Neurosciences, Cleveland Clinic, Cleveland, Ohio, USA
| | - Gi Soo Kang
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA,BNH Investment, Seoul, Republic of Korea
| | - Kelsey Grolig
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Xiaoyan Shen
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA,School of Pharmacy, Fudan University, Shanghai, China,Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Eric M. Billings
- Bioinformatics Core Facility, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Gustavo Pacheco-Rodriguez
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Thomas N. Darling
- Department of Dermatology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Joel Moss
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA.
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8
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Bonucci M, Kuperwasser N, Barbe S, Koka V, de Villeneuve D, Zhang C, Srivastava N, Jia X, Stokes MP, Bienaimé F, Verkarre V, Lopez JB, Jaulin F, Pontoglio M, Terzi F, Delaval B, Piel M, Pende M. mTOR and S6K1 drive polycystic kidney by the control of Afadin-dependent oriented cell division. Nat Commun 2020; 11:3200. [PMID: 32581239 PMCID: PMC7314806 DOI: 10.1038/s41467-020-16978-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 06/01/2020] [Indexed: 02/08/2023] Open
Abstract
mTOR activation is essential and sufficient to cause polycystic kidneys in Tuberous Sclerosis Complex (TSC) and other genetic disorders. In disease models, a sharp increase of proliferation and cyst formation correlates with a dramatic loss of oriented cell division (OCD). We find that OCD distortion is intrinsically due to S6 kinase 1 (S6K1) activation. The concomitant loss of S6K1 in Tsc1-mutant mice restores OCD but does not decrease hyperproliferation, leading to non-cystic harmonious hyper growth of kidneys. Mass spectrometry-based phosphoproteomics for S6K1 substrates revealed Afadin, a known component of cell-cell junctions required to couple intercellular adhesions and cortical cues to spindle orientation. Afadin is directly phosphorylated by S6K1 and abnormally decorates the apical surface of Tsc1-mutant cells with E-cadherin and α-catenin. Our data reveal that S6K1 hyperactivity alters centrosome positioning in mitotic cells, affecting oriented cell division and promoting kidney cysts in conditions of mTOR hyperactivity.
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Affiliation(s)
- Martina Bonucci
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Nicolas Kuperwasser
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Serena Barbe
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Vonda Koka
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Delphine de Villeneuve
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Chi Zhang
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Nishit Srivastava
- Institut Curie, PSL Research University, CNRS, UMR 144, F-75005, Paris, France
| | - Xiaoying Jia
- Cell Signaling Technology INC, 3 Trask Lane, Danvers, MA, 01923, USA
| | - Matthew P Stokes
- Cell Signaling Technology INC, 3 Trask Lane, Danvers, MA, 01923, USA
| | - Frank Bienaimé
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Virginie Verkarre
- Université de Paris, PARCC, INSERM, Equipe Labellisée par la Ligue contre le Cancer, F-75015, Paris, France.,Assistance Publique-Hôpitaux de Paris (AP-HP centre), Hôpital Européen Georges Pompidou, Département d'anatomo-pathologie, F-75015, Paris, France
| | | | | | - Marco Pontoglio
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Fabiola Terzi
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France.,Inserm, U1151, Paris, F-75014, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Benedicte Delaval
- CRBM, CNRS, Univ. Montpellier, Centrosome, cilia and pathologies Lab, 1919 Route de Mende, 34293, Montpellier, France
| | - Matthieu Piel
- Institut Curie, PSL Research University, CNRS, UMR 144, F-75005, Paris, France
| | - Mario Pende
- Institut Necker-Enfants Malades, 14 rue Maria Helena Vieira Da Silva, CS, 61431, Paris, France. .,Inserm, U1151, Paris, F-75014, France. .,Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
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9
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Inactivation of TSC1 promotes epithelial-mesenchymal transition of renal tubular epithelial cells in mouse diabetic nephropathy. Acta Pharmacol Sin 2019; 40:1555-1567. [PMID: 31235817 PMCID: PMC7468253 DOI: 10.1038/s41401-019-0244-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 04/25/2019] [Indexed: 02/06/2023] Open
Abstract
Epithelial–mesenchymal transition (EMT) of renal tubular epithelial cells is one of the potential mechanisms of renal fibrosis, which promotes the development of diabetic nephropathy (DN). However, the molecular mechanisms of EMT remain largely unknown. Tuberous sclerosis proteins TSC1 and TSC2 are key integrators of growth factor signaling, and the loss of TSC1 or TSC2 function leads to a spectrum of diseases that underlie abnormalities in cell growth, proliferation, differentiation, and migration. In this study, we investigated the effects of TSC1 on high glucose (HG)-induced EMT of human proximal tubular epithelial HK-2 cells in vitro and renal fibrosis in TSC1−/− and db/db mice. We found that the exposure of HK-2 cells to HG (30 mM) time-dependently decreased TSC1 expression, increased the phosphorylation of mTORC1, P70S6K, and 4E-BP-1, and promoted cell migration, resulting in EMT. Transfection of the cells with TSC1 mimic significantly ameliorated HG-induced EMT of HK-2 cells. The tubules-specific TSC1 knockout mice (TSC1−/−) displayed a significant decline in renal function. TSC1−/− mice, similar to db/db mice, showed greatly activated mTORC1 signaling and EMT process in the renal cortex and exacerbated renal fibrosis. Overexpression of TSC1 through LV-TSC1 transfection significantly alleviated the progression of EMT and renal fibrosis in the renal cortex of db/db mice. Taken together, our results suggest that TSC1 plays a key role in mediating HG-induced EMT, and inhibition of TSC1-regulated mTORC1 signaling may be a potential approach to prevent renal fibrosis in DN.
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10
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Allosteric and ATP-Competitive Inhibitors of mTOR Effectively Suppress Tumor Progression-Associated Epithelial-Mesenchymal Transition in the Kidneys of Tsc2 +/- Mice. Neoplasia 2019; 21:731-739. [PMID: 31207499 PMCID: PMC6580094 DOI: 10.1016/j.neo.2019.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 12/17/2022] Open
Abstract
In tuberous sclerosis (TSC)–associated tumors, mutations in the TSC genes lead to aberrant activation of the mechanistic target of rapamycin complex 1 (mTORC1) signaling pathway. mTORC1 signaling impacts many biological processes including the epithelial-mesenchymal transition (EMT), which is suggested to promote tumor progression and metastasis in various types of cancer. In this study, we report hybrid cells with epithelial and mesenchymal features in angiomyolipomas and partial EMT in carcinomas from TSC patients and describe a new model of EMT activation during tumor progression from cyst to papillary adenoma to solid carcinoma in the kidneys of Tsc2+/− mice. Features of EMT occurred infrequently in TSC-associated cysts but increased as the lesions progressed through papillary adenoma to solid carcinoma where epithelial-mesenchymal hybrid cells were abundant, indicating partial EMT. We also compared the effects of the novel ATP-competitive mTOR inhibitor AZD2014 with the allosteric mTOR inhibitor rapamycin on EMT and tumor burden. Both AZD2014 and rapamycin potently suppressed EMT of renal tumors and effectively blocked tumor progression in Tsc2+/− mice. These results suggest that partial EMT is a shared feature of TSC-associated renal tumors in humans and mice and occurs during TSC-associated tumor progression. EMT-related signaling pathways may represent therapeutic targets for tumors associated with mutations in the TSC genes.
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11
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Valianou M, Filippidou N, Johnson DL, Vogel P, Zhang EY, Liu X, Lu Y, Yu JJ, Bissler JJ, Astrinidis A. Rapalog resistance is associated with mesenchymal-type changes in Tsc2-null cells. Sci Rep 2019; 9:3015. [PMID: 30816188 PMCID: PMC6395747 DOI: 10.1038/s41598-019-39418-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/24/2019] [Indexed: 01/26/2023] Open
Abstract
Tuberous Sclerosis Complex (TSC) and Lymphangioleiomyomatosis (LAM) are caused by inactivating mutations in TSC1 or TSC2, leading to mTORC1 hyperactivation. The mTORC1 inhibitors rapamycin and analogs (rapalogs) are approved for treating of TSC and LAM. Due to their cytostatic and not cytocidal action, discontinuation of treatment leads to tumor regrowth and decline in pulmonary function. Therefore, life-long rapalog treatment is proposed for the control of TSC and LAM lesions, which increases the chances for the development of acquired drug resistance. Understanding the signaling perturbations leading to rapalog resistance is critical for the development of better therapeutic strategies. We developed the first Tsc2-null rapamycin-resistant cell line, ELT3-245, which is highly tumorigenic in mice, and refractory to rapamycin treatment. In vitro ELT3-245 cells exhibit enhanced anchorage-independent cell survival, resistance to anoikis, and loss of epithelial markers. A key alteration in ELT3-245 is increased β-catenin signaling. We propose that a subset of cells in TSC and LAM lesions have additional signaling aberrations, thus possess the potential to become resistant to rapalogs. Alternatively, when challenged with rapalogs TSC-null cells are reprogrammed to express mesenchymal-like markers. These signaling changes could be further exploited to induce clinically-relevant long-term remissions.
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Affiliation(s)
- Matthildi Valianou
- Division of Pediatric Nephrology, Department of Pediatrics, College of Medicine, University of Tennessee Health Sciences Center, Memphis, TN, 38103, USA.,Tuberous Sclerosis Complex Center of Excellence, Le Bonheur Children's Hospital, Memphis, TN, 38103, USA
| | - Natalia Filippidou
- Division of Pediatric Nephrology, Department of Pediatrics, College of Medicine, University of Tennessee Health Sciences Center, Memphis, TN, 38103, USA.,Tuberous Sclerosis Complex Center of Excellence, Le Bonheur Children's Hospital, Memphis, TN, 38103, USA
| | - Daniel L Johnson
- Office of Research Molecular Bioinformatics Core, University of Tennessee Health Sciences Center, Memphis, TN, 38103, USA
| | - Peter Vogel
- Department of Pathology, St Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Erik Y Zhang
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Xiaolei Liu
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Yiyang Lu
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Jane J Yu
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - John J Bissler
- Division of Pediatric Nephrology, Department of Pediatrics, College of Medicine, University of Tennessee Health Sciences Center, Memphis, TN, 38103, USA.,Tuberous Sclerosis Complex Center of Excellence, Le Bonheur Children's Hospital, Memphis, TN, 38103, USA.,Department of Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Aristotelis Astrinidis
- Division of Pediatric Nephrology, Department of Pediatrics, College of Medicine, University of Tennessee Health Sciences Center, Memphis, TN, 38103, USA. .,Tuberous Sclerosis Complex Center of Excellence, Le Bonheur Children's Hospital, Memphis, TN, 38103, USA. .,Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, USA.
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12
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Zou Y, Li S, Li Z, Song D, Zhang S, Yao Q. MiR-146a attenuates liver fibrosis by inhibiting transforming growth factor-β1 mediated epithelial-mesenchymal transition in hepatocytes. Cell Signal 2019; 58:1-8. [PMID: 30711634 DOI: 10.1016/j.cellsig.2019.01.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 01/05/2019] [Accepted: 01/31/2019] [Indexed: 12/21/2022]
Abstract
Epithelial-mesenchymal transition (EMT) has emerged as a vital process in embryogenesis, carcinogenesis, and tissue fibrosis. Transforming growth factor-beta 1 (TGF-β1)-mediated signaling pathways play important roles in the EMT process. MicroRNA-146a (miR-146a) has been suggested as a significant regulatory molecule in fibrogenesis. Therefore, the present study aimed to evaluate the effect of miR-146a on the EMT of hepatocytes and to investigate the role of overexpressing miR-146a on rat hepatic fibrosis. The results showed that the miR-146a level decreased during the EMT process of L02 hepatocytes induced by TGF-β1 in vitro. Moreover, miR-146a overexpression led to significant reduction of EMT-related markers expression in hepatocytes. Subsequent experiments revealed that miR-146a attenuated the EMT process in hepatocytes by targeting small mothers against decapentaplegic (SMAD) 4. Meanwhile, restoration of SMAD4 expression rescued the inhibitory effect of miRNA-146a on EMT. Further in vivo studies revealed that intravenous injection of miR-146a-expressing adenovirus (Ad-miR-146a) successfully restored the miR-146a levels and mitigated fibrogenesis in the livers of CCl4-treated rats. More importantly, after Ad-miR-146a treatment, inhibition of both EMT traits and SMAD4 expression was observed. The results of the present study showed that miR-146a/SMAD4 is a key signaling cascade that inhibits hepatocyte EMT, and the introduction of miR-146a might present a promising therapeutic option for liver fibrosis.
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Affiliation(s)
- Yanting Zou
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, PR China; Shanghai Institute of Liver disease, Shanghai, PR China
| | - Shuyu Li
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, PR China; Shanghai Institute of Liver disease, Shanghai, PR China
| | - Zhengliang Li
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, PR China; Shanghai Institute of Liver disease, Shanghai, PR China
| | - Dongqiang Song
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, PR China
| | - Shuncai Zhang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, PR China; Shanghai Institute of Liver disease, Shanghai, PR China.
| | - Qunyan Yao
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, PR China; Shanghai Institute of Liver disease, Shanghai, PR China.
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13
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Liu Y, Guo Z, Zhao C, Li X, Liu H, Chen J. Lymphangioleiomyomatosis: a case report and review of diagnosis and treatment. Onco Targets Ther 2018; 11:5339-5347. [PMID: 30214240 PMCID: PMC6126514 DOI: 10.2147/ott.s161360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Lymphangioleiomyomatosis (LAM) is a rare disease that generally affects young women and involves the abnormal proliferation of smooth muscle-like cells (LAM cells) in the lungs (pulmonary LAM) and extrapulmonary sites (extrapulmonary LAM). This disease is rare in males. It is hard to distinguish between lung cancer and pulmonary LAM, especially during early stages. Herein, we present a case of a 66-year-old man with a small nodule in the right upper lobe that was first diagnosed as a lung malignancy using a chest CT scan. After a wedge dissection, a pathologist performed a histologic and immunohistochemical examination, and a diagnosis of pulmonary LAM was made. We further performed a 518-gene panel analysis using next-generation sequencing, and only three genes, BARD1, BLM, and BRCA2, were found to have mutations. We also provide a summary of the diagnosis and treatment of this disease.
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Affiliation(s)
- Yi Liu
- Department of Lung Cancer Surgery, Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China,
| | - Zhibin Guo
- Department of Lung Cancer Surgery, Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China,
| | - Chenlong Zhao
- Department of Lung Cancer Surgery, Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China,
| | - Xin Li
- Department of Lung Cancer Surgery, Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China,
| | - Hongyu Liu
- Department of Lung Cancer Surgery, Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China,
| | - Jun Chen
- Department of Lung Cancer Surgery, Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China,
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14
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Goldberg AA, Joung KB, Mansuri A, Kang Y, Echavarria R, Nikolajev L, Sun Y, Yu JJ, Laporte SA, Schwertani A, Kristof AS. Oncogenic effects of urotensin-II in cells lacking tuberous sclerosis complex-2. Oncotarget 2018; 7:61152-61165. [PMID: 27458154 PMCID: PMC5308642 DOI: 10.18632/oncotarget.10748] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/01/2016] [Indexed: 01/16/2023] Open
Abstract
Lymphangioleiomyomatosis (LAM) is a destructive lung disease that can arise sporadically or in adults suffering from the tumor syndrome tuberous sclerosis complex (TSC). Microscopic tumors ('LAM nodules') in the lung interstitium arise from lymphatic invasion and metastasis. These consist of smooth muscle-like cells (LAM cells) that exhibit markers of neural crest differentiation and loss of the tumor suppressor protein 'tuberous sclerosis complex-2' (TSC2). Consistent with a neural phenotype, expression of the neuropeptide urotensin-II and its receptor was detected in LAM nodules. We hypothesized that loss of TSC2 sensitizes cells to the oncogenic effects of urotensin-II. TSC2-deficient Eker rat uterine leiomyoma ELT3 cells were stably transfected with empty vector or plasmid for the expression of TSC2. Urotensin-II increased cell viability and proliferation in TSC2-deficient cells, but not in TSC2-reconstituted cells. When exposed to urotensin-II, TSC2-deficient cells exhibited greater migration, anchorage-independent cell growth, and matrix invasion. The effects of urotensin-II on TSC2-deficient cells were blocked by the urotensin receptor antagonist SB657510, and accompanied by activation of Erk mitogen-activated protein kinase and focal adhesion kinase. Urotensin-II-induced proliferation and migration were reproduced in TSC2-deficient human angiomyolipoma cells, but not in those stably expressing TSC2. In a mouse xenograft model, SB657510 blocked the growth of established ELT3 tumors, reduced the number of circulating tumor cells, and attenuated the production of VEGF-D, a clinical biomarker of LAM. Urotensin receptor antagonists may be selective therapeutic agents for the treatment of LAM or other neural crest-derived neoplasms featuring loss of TSC2 or increased expression of the urotensin receptor.
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Affiliation(s)
- Alexander A Goldberg
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Montreal, Quebec, Canada.,Department of Critical Care Medicine, McGill University Health Centre Research Institute, Montreal, Quebec, Canada
| | - Kwang-Bo Joung
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Montreal, Quebec, Canada.,Department of Critical Care Medicine, McGill University Health Centre Research Institute, Montreal, Quebec, Canada
| | - Asma Mansuri
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Montreal, Quebec, Canada.,Department of Critical Care Medicine, McGill University Health Centre Research Institute, Montreal, Quebec, Canada
| | - Yujin Kang
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Montreal, Quebec, Canada.,Department of Critical Care Medicine, McGill University Health Centre Research Institute, Montreal, Quebec, Canada
| | - Raquel Echavarria
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Montreal, Quebec, Canada.,Department of Critical Care Medicine, McGill University Health Centre Research Institute, Montreal, Quebec, Canada
| | - Ljiljana Nikolajev
- Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Yang Sun
- College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Jane J Yu
- College of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Stephane A Laporte
- Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Adel Schwertani
- Division of Cardiology, Montreal General Hospital, Montreal, Quebec, Canada
| | - Arnold S Kristof
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Montreal, Quebec, Canada.,Department of Critical Care Medicine, McGill University Health Centre Research Institute, Montreal, Quebec, Canada
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15
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Dybdal-Hargreaves NF, Risinger AL, Mooberry SL. Regulation of E-cadherin localization by microtubule targeting agents: rapid promotion of cortical E-cadherin through p130Cas/Src inhibition by eribulin. Oncotarget 2017; 9:5545-5561. [PMID: 29464017 PMCID: PMC5814157 DOI: 10.18632/oncotarget.23798] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 12/21/2017] [Indexed: 12/22/2022] Open
Abstract
Microtubule targeting agents (MTAs) are some of the most effective anticancer drugs used to treat a wide variety of adult and pediatric cancers. Building evidence suggests that these drugs inhibit interphase signaling events and that this contributes to their anticancer actions. The effects of diverse MTAs were evaluated following a 2 hour incubation with clinically relevant concentrations to test the hypothesis that these drugs rapidly and differentially disrupt epithelial-to-mesenchymal transition (EMT)-related signaling. The MTAs rapidly promoted the cortical localization of internal pools of E-cadherin in HCC1937 breast cancer cells, with the most robust effects observed with the microtubule destabilizers eribulin and vinorelbine. Cortical E-cadherin localization was also promoted by the Src kinase inhibitor dasatinib or by siRNA-mediated depletion of the p130Cas scaffold. Mechanistic studies demonstrate that eribulin disrupts the interaction between p130Cas and Src, leading to decreased cortical Src phosphorylation that precedes the accumulation of cortical E-cadherin. These results suggest that microtubules can be actively co-opted by cancer cells to inhibit cortical E-cadherin localization, a hallmark of EMT, and provide a direct link between the initial disruption of the microtubule network and reversal of EMT phenotypes demonstrated by eribulin in long-term studies.
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Affiliation(s)
| | - April L Risinger
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA.,UT Health Cancer Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Susan L Mooberry
- Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA.,UT Health Cancer Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
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16
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Bi XG, Guo L, Wang XL, Wei Q, Du Q, Jiang WH, Zheng GY, Zhang HT, Ma JH, Zheng S. Distinct subcellular localization of E-cadherin between epithelioid angiomyolipoma and triphasic angiomyolipoma: A preliminary case-control study. Oncol Lett 2017; 14:695-704. [PMID: 28693223 PMCID: PMC5494718 DOI: 10.3892/ol.2017.6272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 03/17/2017] [Indexed: 12/30/2022] Open
Abstract
Epithelioid angiomyolipoma (EAML) is a rare variant of angiomyolipoma (AML). Previous studies have demonstrated that epithelial (E-)cadherin is expressed in two subtypes of AML, EAML and triphasic AML; however, the expression pattern of E-cadherin remains unclear. In the present study, a preliminary case-control study was conducted to determine the expression pattern of E-cadherin between EAML and triphasic AML, the control, focusing on the subcellular localization and expression category of E-cadherin. No significant difference was identified in the age, sex, history of tuberous sclerosis, smoking and alcohol consumption between the two groups (P>0.05). In EAML, 9 patients were categorized as exhibiting a low risk of malignant behavior and the other two were categorized as exhibiting an intermediate or high risk of malignant behavior. The proportion of cases expressing E-cadherin, human melanoma black-45 (HMB45), melanoma antigen recognized by T cells 1 (Mart1/Melan A), smooth muscle actin and progesterone receptor were 95.5 (21/22), 95.5 (21/22), 86.4 (19/22), 77.3 (17/22) and 86.4% (19/22), respectively. E-cadherin was identified to be localized, using staining techniques, in the cell membrane and/or cytoplasm. The subcellular localization of E-cadherin was significantly different between EAML and triphasic AML; the majority of EAML cases revealed membranous and cytoplasmic staining, whereas triphasic AML cases demonstrated cytoplasmic staining (P=0.0093). The expression of E-cadherin may be positively associated with HMB45 (P=0.0044) and Mart1/Melan A (P=0.0049). The results of the present study identified that the subcellular localization of E-cadherin may be different between EAML and the control group of triphasic AML. Additionally, E-cadherin and melanocytic markers may be co-expressed in distinct subtypes of AML. A follow-up study with a large sample size to validate the results of the present study, followed by a mechanistic study based on cell lines to determine any significance, are warranted.
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Affiliation(s)
- Xin-Gang Bi
- Department of Urology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Lei Guo
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Xiao-Liang Wang
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Qian Wei
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China.,Department of Pathology, Tibet Autonomous Region People's Hospital, Lhasa, Tibet Autonomous Region 850000, P.R. China
| | - Qiang Du
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Wen-Hao Jiang
- Department of Oncology, Beijing Second Hospital, Beijing 100031, P.R. China
| | - Guang-Yuan Zheng
- Department of Oncology, Beijing Second Hospital, Beijing 100031, P.R. China
| | - Hong-Tu Zhang
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Jian-Hui Ma
- Department of Urology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Shan Zheng
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
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17
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Lohmann E, Gasser T, Grundmann K. Needs and Requirements of Modern Biobanks on the Example of Dystonia Syndromes. Front Neurol 2017; 8:9. [PMID: 28194131 PMCID: PMC5276852 DOI: 10.3389/fneur.2017.00009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 01/09/2017] [Indexed: 01/16/2023] Open
Abstract
Dystonia belongs to a group of rare diseases (RDs) characterized by etiologic heterogeneity, affection often in childhood, severe and variable clinical manifestation. The burden of this disease is aggravated by the lack of effective and specific treatment. In the field of dystonia as in other RDs the number of available biospecimens is, in general, limited. Here, we report a new approach to collect clinical and genetic data in biospecimens maintained collaboratively by researchers and their associated institutions in a decentralized system. Allowing researchers to have access to significant numbers of samples and corresponding clinical data, biobanking in dystonia might not only provide a powerful tool in the identification of disease genes but also the classification of variants detected in known genes with respect to their clinical relevance. Growing data in genetics due to the technical progress demand for well-annotated and well-managed biobanks, which in near future hold even the potential for biomarker research and generating medical treatment based on clinical and genetic data currently summarized as “personalized medicine.”
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Affiliation(s)
- Ebba Lohmann
- Department of Neurodegenerative Diseases, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany; DZNE, German Center for Neurodegenerative Diseases, Tübingen, Germany; Istanbul Faculty of Medicine, Department of Neurology, Behavioral Neurology and Movement Disorders Unit, Istanbul University, Istanbul, Turkey
| | - Thomas Gasser
- DZNE, German Center for Neurodegenerative Diseases, Tübingen, Germany; Istanbul Faculty of Medicine, Department of Neurology, Behavioral Neurology and Movement Disorders Unit, Istanbul University, Istanbul, Turkey
| | - Kathrin Grundmann
- Department of Medical Genetics and Applied Genomics, University of Tübingen , Tübingen , Germany
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18
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Nwabo Kamdje A, Vecchio L, Takam Kamga P, Seke Etet P, Muller J, Bassi G, Krampera M. Developmental Pathways. INTRODUCTION TO CANCER METASTASIS 2017:337-352. [DOI: 10.1016/b978-0-12-804003-4.00018-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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19
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Nwabo Kamdje AH, Takam Kamga P, Tagne Simo R, Vecchio L, Seke Etet PF, Muller JM, Bassi G, Lukong E, Kumar Goel R, Mbo Amvene J, Krampera M. Developmental pathways associated with cancer metastasis: Notch, Wnt, and Hedgehog. Cancer Biol Med 2017; 14:109-120. [PMID: 28607802 PMCID: PMC5444923 DOI: 10.20892/j.issn.2095-3941.2016.0032] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Master developmental pathways, such as Notch, Wnt, and Hedgehog, are signaling systems that control proliferation, cell death, motility, migration, and stemness. These systems are not only commonly activated in many solid tumors, where they drive or contribute to cancer initiation, but also in primary and metastatic tumor development. The reactivation of developmental pathways in cancer stroma favors the development of cancer stem cells and allows their maintenance, indicating these signaling pathways as particularly attractive targets for efficient anticancer therapies, especially in advanced primary tumors and metastatic cancers. Metastasis is the worst feature of cancer development. This feature results from a cascade of events emerging from the hijacking of epithelial-mesenchymal transition, angiogenesis, migration, and invasion by transforming cells and is associated with poor survival, drug resistance, and tumor relapse. In the present review, we summarize and discuss experimental data suggesting pivotal roles for developmental pathways in cancer development and metastasis, considering the therapeutic potential. Emerging targeted antimetastatic therapies based on Notch, Wnt, and Hedgehog pathways are also discussed.
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Affiliation(s)
| | - Paul Takam Kamga
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Richard Tagne Simo
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Lorella Vecchio
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | | | - Jean Marc Muller
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Giulio Bassi
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Erique Lukong
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Raghuveera Kumar Goel
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Jeremie Mbo Amvene
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
| | - Mauro Krampera
- Department of Biomedical Sciences, University of Ngaoundere, Ngaoundere 454, Cameroon
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20
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Li C, Li N, Liu X, Zhang EY, Sun Y, Masuda K, Li J, Sun J, Morrison T, Li X, Chen Y, Wang J, Karim NA, Zhang Y, Blenis J, Reginato MJ, Henske EP, Yu JJ. Proapoptotic protein Bim attenuates estrogen-enhanced survival in lymphangioleiomyomatosis. JCI Insight 2016; 1:e86629. [PMID: 27882343 PMCID: PMC5111508 DOI: 10.1172/jci.insight.86629] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 10/10/2016] [Indexed: 12/12/2022] Open
Abstract
Lymphangioleiomyomatosis (LAM) is a progressive lung disease that primarily affects young women. Genetic evidence suggests that LAM cells bearing TSC2 mutations migrate to the lungs, proliferate, and cause cystic remodeling. The female predominance indicates that estrogen plays a critical role in LAM pathogenesis, and we have proposed that estrogen promotes LAM cell metastasis by inhibition of anoikis. We report here that estrogen increased LAM patient-derived cells' resistance to anoikis in vitro, accompanied by decreased accumulation of the proapoptotic protein Bim, an activator of anoikis. The resistance to anoikis was reversed by the proteasome inhibitor, bortezomib. Treatment of LAM patient-derived cells with estrogen plus bortezomib promoted anoikis compared with estrogen alone. Depletion of Bim by siRNA in TSC2-deficient cells resulted in anoikis resistance. Treatment of mice with bortezomib reduced estrogen-promoted lung colonization of TSC2-deficient cells. Importantly, molecular depletion of Bim by siRNA in Tsc2-deficient cells increased lung colonization in a mouse model. Collectively, these data indicate that Bim plays a key role in estrogen-enhanced survival of LAM patient-derived cells under detached conditions that occur with dissemination. Thus, targeting Bim may be a plausible future treatment strategy in patients with LAM.
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Affiliation(s)
- Chenggang Li
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
| | - Na Li
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
- The First Affiliated Hospital of Zhengzhou University, Department of Oncology, Zhengzhou, Henan, China
| | - Xiaolei Liu
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
| | - Erik Y. Zhang
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
| | - Yang Sun
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
| | - Kouhei Masuda
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
| | - Jing Li
- Harvard Medical School, Department of Cell Biology, Boston, Massachusetts, USA
| | - Julia Sun
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
| | - Tasha Morrison
- Boston University School of Medicine, Department Molecular and Translational Medicine, Boston, Massachusetts, USA
| | - Xiangke Li
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
- The First Affiliated Hospital of Zhengzhou University, Department of Oncology, Zhengzhou, Henan, China
| | - Yuanguang Chen
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
- The First Affiliated Hospital of Guangzhou Medical University, Department of Gastrointestinal Surgery, Guangzhou, China
| | - Jiang Wang
- University of Cincinnati College of Medicine, Department of Pathology and Lab Medicine, Cincinnati, OH, USA
| | - Nagla A. Karim
- University of Cincinnati College of Medicine, Department of Internal Medicine, Division of Hematology and Oncology, Cincinnati, Ohio, USA
| | - Yi Zhang
- The First Affiliated Hospital of Zhengzhou University, Biotherapy Center and Department of Oncology, Zhengzhou, Henan, China
| | - John Blenis
- Harvard Medical School, Department of Cell Biology, Boston, Massachusetts, USA
- Weill Cornell Medicine Sandra and Edward Meyer Cancer Center, New York, New York, USA
| | - Mauricio J. Reginato
- Drexel University College of Medicine, Department of Biochemistry and Molecular Biology, Philadelphia, Pennsylvania, USA
| | - Elizabeth P. Henske
- Brigham and Women’s Hospital-Harvard Medical School, Boston, Massachusetts, USA
| | - Jane J. Yu
- University of Cincinnati College of Medicine, Department of Internal Medicine, Pulmonary, Critical Care and Sleep Medicine, Cincinnati, Ohio, USA
- The First Affiliated Hospital of Zhengzhou University, Department of Oncology, Zhengzhou, Henan, China
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21
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Zhu FQ, Chen MJ, Zhu M, Zhao RS, Qiu W, Xu X, Liu H, Zhao HW, Yu RJ, Wu XF, Zhang K, Huang H. Curcumin Suppresses Epithelial-Mesenchymal Transition of Renal Tubular Epithelial Cells through the Inhibition of Akt/mTOR Pathway. Biol Pharm Bull 2016; 40:17-24. [PMID: 27829579 DOI: 10.1248/bpb.b16-00364] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Curcumin has exhibited a protective effect against development of renal fibrosis in animal models, however, its underlying molecular mechanisms are largely unclear. Therefore, we investigated the anti-fibrosis effects of curcumin in transforming growth factor-β1 (TGF-β1)-induced epithelial-to-mesenchymal transition (EMT), and the mechanism by which it mediates the phosphatidylinositol 3-kinase (PI3K)/Akt pathway. Human kidney tubular epithelial cells (HKCs) were treated with TGF-β1 or curcumin alone, or TGF-β1 in combination with curcumin. The effect of curcumin on cell proliferation was measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Expression of E-cadherin, cytokeratin, vimentin, alpha smooth muscle actin (α-SMA), fibroblast-specific protein 1 (FSP1) and key proteins of Akt/mammalian target of rapamycin (mTOR) pathway were analyzed by immunocytochemistry, real-time PCR and Western blot. Low dose curcumin (3.125 and 25 µmol/L) effectively promoted HKC proliferation. When HKCs were co-incubated with TGF-β1 and curcumin for 72 h, curcumin maintained the epithelial morphology in a dose-dependent manner, decreased expression of vimentin, α-SMA and FSP1 normally induced by TGF-β1, and increased expression of E-cadherin, cytokeratin. Importantly, we found that curcumin reduced Akt, mTOR and P70S6K phosphorylation, effectively suppressing the activity of the Akt/mTOR pathway in HKCs. Curcumin also promoted HKC proliferation, and antagonized TGF-β1-driven EMT through the inhibition of Akt/mTOR pathway activity, which may suggest an alternative therapy for renal fibrosis.
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Affiliation(s)
- Fang-Qiang Zhu
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University
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22
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Rokutan H, Hosoda F, Hama N, Nakamura H, Totoki Y, Furukawa E, Arakawa E, Ohashi S, Urushidate T, Satoh H, Shimizu H, Igarashi K, Yachida S, Katai H, Taniguchi H, Fukayama M, Shibata T. Comprehensive mutation profiling of mucinous gastric carcinoma. J Pathol 2016; 240:137-48. [DOI: 10.1002/path.4761] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 05/16/2016] [Accepted: 06/07/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Hirofumi Rokutan
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
- Department of Pathology, Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - Fumie Hosoda
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Natsuko Hama
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Hiromi Nakamura
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Yasushi Totoki
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Eisaku Furukawa
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Erika Arakawa
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Shoko Ohashi
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Tomoko Urushidate
- Laboratory of Molecular Medicine, Human Genome Center, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
| | - Hironori Satoh
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Hiroko Shimizu
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Keiko Igarashi
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Shinichi Yachida
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
| | - Hitoshi Katai
- Gastric Surgery Division; National Cancer Center Hospital; Tokyo Japan
| | | | - Masashi Fukayama
- Department of Pathology, Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - Tatsuhiro Shibata
- Division of Cancer Genomics; National Cancer Center Research Institute; Tokyo Japan
- Laboratory of Molecular Medicine, Human Genome Center, The Institute of Medical Science; The University of Tokyo; Tokyo Japan
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23
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Park JH, Lee C, Suh JH, Kim G, Song B, Moon KC. Renal epithelioid angiomyolipoma: Histopathologic review, immunohistochemical evaluation and prognostic significance. Pathol Int 2016; 66:571-577. [PMID: 27595761 DOI: 10.1111/pin.12458] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 07/21/2016] [Accepted: 08/17/2016] [Indexed: 11/30/2022]
Abstract
Epithelioid angiomyolipoma (EAML) is considered to be a potentially malignant tumor and requires a differential diagnosis from renal cell carcinoma. In this study, we assessed the clinicopathologic features of renal EAML and evaluated the prognostic significance. Among 78 angiomyolipoma (AML) patients, a total of 5 EAMLs were identified, accounting for 6.4% of the total AML cases. The mean age was 41.4 years, and the average tumor size was 12.7 cm in diameter. Association of tuberous sclerosis complex was identified in two cases. One EAML case showed malignant behavior with local recurrence and distant metastasis. The malignant EAML had a larger tumor size, a higher percentage of epithelioid component and atypical epithelioid cells, ≥2 mitoses per 10 high power fields with atypical mitosis, necrosis, extrarenal extension, and carcinoma-like growth pattern. Furthermore, the malignant case revealed p53 immunoreactivity and decreased membranous E-cadherin expression. Pathologic evaluation of adverse prognostic factors will be helpful for risk stratification and prognosis estimation of EAML patients.
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Affiliation(s)
- Jeong Hwan Park
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Cheol Lee
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Ja Hee Suh
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Gilhyang Kim
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Boram Song
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung Chul Moon
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea. .,Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.
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24
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Bonsib SM, Boils C, Gokden N, Grignon D, Gu X, Higgins JPT, Leroy X, McKenney JK, Nasr SH, Phillips C, Sangoi AR, Wilson J, Zhang PL. Tuberous sclerosis complex: Hamartin and tuberin expression in renal cysts and its discordant expression in renal neoplasms. Pathol Res Pract 2016; 212:972-979. [PMID: 27640314 DOI: 10.1016/j.prp.2016.04.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/03/2016] [Accepted: 04/20/2016] [Indexed: 10/21/2022]
Abstract
Tuberous sclerosis complex (TSC) results from mutation of TSC1 or TSC2 that encode for hamartin and tuberin. It affects the kidneys often in advance of extra-renal stigmata. We studied 14 TSC cases, and 4 possible TSC cases with multiple angiomyolipomas (AMLs) for hamartin and tuberin protein expression to determine if the staining profile could predict mutation status or likelihood of TSC with renal-limited disease. The 18 cases included 15 nephrectomies and 1 section of 6 TSC-associated renal cell carcinomas (RCC). Controls included the non-neoplastic kidney in 5 tumor nephrectomies, 4 sporadic cases of AML and 6 clear cell RCCs. In the 14 TSC cases, 9 had AMLs, 9 had RCCs, 5 had polycystic kidney disease and 8 had eosinophilic cysts (EC) lined by large eosinophilic cells. The controls and study cases showed luminal staining of proximal tubules (PT) and peripheral membrane staining in distal tubules/collecting ducts for hamartin and cytoplasmic staining for tuberin. Eosinophilic cysts had a luminal PT-like stain with hamartin and a cytoplasmic reaction for tuberin. Hamartin stained myoid cells in all AMLs. Tuberin was negative in all but 1AML, an epithelioid AML. All but 1 RCC were positive for tuberin; 13 RCCs (7 TSC/6 non-TSC) were negative for hamartin and 4 showed a weak reaction. We conclude that the ECs of TSC are proximal tubule-derived. The hamartin and tuberin staining profiles of AMLs and most RCCs are reciprocal precluding prediction of the mutation in TSC, and fail to predict if a patient with multifocal AML has TSC.
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Affiliation(s)
- Stephen M Bonsib
- Nephropath, 10810 Executive Center Drive, Suite 100, Little Rock, AR, 72211, United States.
| | - Christie Boils
- Nephropath, 10810 Executive Center Drive, Suite 100, Little Rock, AR, 72211, United States.
| | - Neriman Gokden
- University of Arkansas, 4301 West Markham, Little Rock, AR, 72205, United States.
| | - David Grignon
- Indiana University, 350 West 11th Street (Room 6014 Grignon, and Room 4090 phillips) Indianapolis, IN, 46202-4108, United States.
| | - Xin Gu
- Louisiana State University, 1501 Kings Hwy, Shreveport, LA, 71103, United States.
| | - John P T Higgins
- Stanford University, 300 Pasteur Dr, H2110 MC 5324, Stanford, CA, 94305, United States.
| | - Xavier Leroy
- Lille University Hospitals, Department of Pathology, CHRU, Parc Eurasante, Nord, Lille, 59037, France.
| | - Jesse K McKenney
- Cleveland Clinic, 9500 Euclid Ave., LL2-1, Cleveland, OH, 44106, United States.
| | - Samih H Nasr
- Mayo Clinic, 200 1st Street South West, Rochester, MN, 55905, United States.
| | - Carrie Phillips
- Indiana University, 350 West 11th Street (Room 6014 Grignon, and Room 4090 phillips) Indianapolis, IN, 46202-4108, United States.
| | - Ankur R Sangoi
- El Camino Hospital, 2500 Grant Rd., St. GC33, Mountain View, CA, 94040, United States.
| | - Jon Wilson
- Nephropath, 10810 Executive Center Drive, Suite 100, Little Rock, AR, 72211, United States.
| | - Ping L Zhang
- William Beaumont Hospital, 3601 West 13 Mile Road Royal Oak, MI, 48073, United States.
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Abstract
INTRODUCTION Lymphangioleiomyomatosis (LAM) is a disease of women characterized by cystic lung destruction, lymphatic involvement, and renal angiomyolipomas. AREAS COVERED LAM is caused by proliferation of abnormal smooth muscle-like LAM cells containing mutations and perhaps epigenetic modifications of the TSC1 or TSC2 genes, which encode, respectively, hamartin and tuberin, two proteins controlling the mechanistic target of rapamycin (mTOR) signaling pathway. LAM occurs sporadically or in association with tuberous sclerosis complex. LAM may present with dyspnea, recurrent pneumothorax or chylothorax. Pulmonary function tests show reduced flow rates and lung diffusion capacity. Exercise testing may reveal hypoxemia and ventilatory limitation. The severity and progression of disease may be assessed by computer tomography, and pulmonary function and exercise testing. mTOR inhibitors, (e.g., sirolimus) are effective in stabilizing lung function, and reducing the size of chylous effusions, lymphangioleiomyomas, and angiomyolipomas. EXPERT OPINION Different clinical phenotypes including variable rates of disease progression and variable responses to therapy are seen in LAM patients. No one test is available that predicts the course of disease at the time of diagnosis. Further research regarding the molecular biology of LAM clinical phenotypes is warranted. Recent advances in the characterization of the pathogenesis of LAM are leading to the development of new therapies.
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Affiliation(s)
- Angelo M. Taveira-DaSilva
- Cardiovascular and Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 6D03, MSC 1590, Bethesda, Maryland 20892-1590, USA
| | - Joel Moss
- Cardiovascular and Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 10, Room 6D03, MSC 1590, Bethesda, Maryland 20892-1590, USA
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26
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Xu F, Liu C, Zhou D, Zhang L. TGF-β/SMAD Pathway and Its Regulation in Hepatic Fibrosis. J Histochem Cytochem 2016; 64:157-67. [PMID: 26747705 DOI: 10.1369/0022155415627681] [Citation(s) in RCA: 503] [Impact Index Per Article: 62.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 12/23/2015] [Indexed: 02/06/2023] Open
Abstract
Transforming growth factor-beta1 (TGF-β1), a key member in the TGF-β superfamily, plays a critical role in the development of hepatic fibrosis. Its expression is consistently elevated in affected organs, which correlates with increased extracellular matrix deposition. SMAD proteins have been studied extensively as pivotal intracellular effectors of TGF-β1, acting as transcription factors. In the context of hepatic fibrosis, SMAD3 and SMAD4 are pro-fibrotic, whereas SMAD2 and SMAD7 are protective. Deletion of SMAD3 inhibits type I collagen expression and blocks epithelial-myofibroblast transition. In contrast, disruption of SMAD2 upregulates type I collagen expression. SMAD4 plays an essential role in fibrosis disease by enhancing SMAD3 responsive promoter activity, whereas SMAD7 negatively mediates SMAD3-induced fibrogenesis. Accumulating evidence suggests that divergent miRNAs participate in the liver fibrotic process, which partially regulates members of the TGF-β/SMAD signaling pathway. In this review, we focus on the TGF-β/SMAD and other relative signaling pathways, and discussed the role and molecular mechanisms of TGF-β/SMAD in the pathogenesis of hepatic fibrosis. Moreover, we address the possibility of novel therapeutic approaches to hepatic fibrosis by targeting to TGF-β/SMAD signaling.
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Affiliation(s)
- Fengyun Xu
- School of Pharmacy (FX, DZ, LZ),Anhui Medical University, Hefei 230022, ChinaInstitute for Liver Diseases (FX, DZ, LZ)
| | - Changwei Liu
- Anhui Medical University, Hefei 230022, ChinaDepartment of Pharmacy, The First Affiliated Hospital of Anhui Medical University (CL)
| | - Dandan Zhou
- School of Pharmacy (FX, DZ, LZ),Anhui Medical University, Hefei 230022, ChinaInstitute for Liver Diseases (FX, DZ, LZ)
| | - Lei Zhang
- School of Pharmacy (FX, DZ, LZ),Anhui Medical University, Hefei 230022, ChinaInstitute for Liver Diseases (FX, DZ, LZ)
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27
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Kawano H, Ito Y, Kanai F, Nakamura E, Tada N, Takai S, Horie S, Kobayashi T, Hino O. Aberrant differentiation of Tsc2-deficient teratomas associated with activation of the mTORC1-TFE3 pathway. Oncol Rep 2015; 34:2251-8. [PMID: 26352760 PMCID: PMC4583534 DOI: 10.3892/or.2015.4254] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 07/21/2015] [Indexed: 12/17/2022] Open
Abstract
The model animal of renal cell carcinoma (RCC), the Eker rat, has a germline mutation in the tuberous sclerosis 2 (Tsc2) gene. Heterozygous mutants develop RCCs by second hit in the wild-type Tsc2 allele, whereas homozygous mutants are embryonic lethal. In the present study, a new cell differentiation model was developed to study the mechanism of Tsc2 mutation-associated pathogenesis by generating Tsc2-deficient embryonic stem cells (ESCs) from Eker rats. Tsc2+/+, Tsc2+/− and Tsc2−/− ESCs were all capable of generating three germ layers: mesoderm, ectoderm, and endoderm. Interestingly, epithelial tumor-like abnormal ductal structures were reproducibly observed in Tsc2−/− teratomas from different ESC lines. Immunohistochemical analysis revealed that mammalian target of rapamycin complex 1 (mTORC1) signaling was activated in abnormal ducts of Tsc2−/− teratomas, on the basis of positive staining for p-S6 and p-4EBP1. In these abnormal ducts, expression levels of epithelial markers (i.e., megalin and cubilin) and the cytoplasmic localization of E-cadherin and β-catenin were similar to those in Eker rat RCCs. Moreover, a transcription factor regulated by mTORC1, named TFE3, was located in the nuclei of abnormal ducts and Eker rat RCCs. As a negative regulator of ESC differentiation, TFE3 may result in tissue-specific differentiation defects related to tumorigenesis in Eker rats and Tsc2−/− teratomas. The present study suggests that ESCs derived from Eker rats constitute a novel experimental tool with which to analyze differentiation defects and cell-type specific pathogenesis associated with Tsc2 deficiency.
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Affiliation(s)
- Haruna Kawano
- Department of Urology, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Yoshitaka Ito
- Department of Molecular Pathogenesis, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Fumio Kanai
- Laboratory of Genome Research, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Eri Nakamura
- Laboratory of Genome Research, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Norihiro Tada
- Laboratory of Genome Research, Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Setsuo Takai
- Department of Clinical Radiology, Faculty of Health Sciences, Hiroshima International University, Hiroshima 724-0695, Japan
| | - Shigeo Horie
- Department of Urology, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Toshiyuki Kobayashi
- Department of Molecular Pathogenesis, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Okio Hino
- Department of Molecular Pathogenesis, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
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28
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Tuberin-deficiency downregulates N-cadherin and upregulates vimentin in kidney tumor of TSC patients. Oncotarget 2015; 5:6936-46. [PMID: 25149531 PMCID: PMC4196174 DOI: 10.18632/oncotarget.2206] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Angiomyolipomas (AMLs) are associated with cell fibrosis in kidney of Tuberous Sclerosis Complex patients. The mechanism by which the fibrotic proteins accumulated in AMLs has not been explored. In the present study, we investigated the role of Akt/tuberin/mTOR pathway in the regulation cell fibrosis proteins. AML cells that expressed low levels of tuberin showed less expression of N-cadherin and higher of vimentin proteins compared to HEK293 cells. AML cells infected with Ad-tuberin showed a significant decrease in vimentin and an increase in N-cadherin protein expression. In addition, cells treated with rapamycin showed a significant increase in p-Akt and a decrease in p-p70S6K that was associated with a decrease expression of vimentin and a slight increase expression in N-cadherin. On the other hand, cells treated with Akt inhibitor revealed a significant decrease in p-Akt and p-p70S6K that was associated with a significant decrease in vimentin and an increase in N-cadherin expression. In addition, cells transfected with DN-Akt or DN-S6K show significant increase expression in N-cadherin and a decrease in vimentin. Moreover, cells transfected with siRNA against rictor or siRNA against raptor resulted in a decrease in vimentin and an increase N-cadherin expression. Kidney tumors from TSC patients showed significant decrease in N-cadherin and significant increased in vimentin protein expression compared to control kidney tissues. These data comprise the first report to provide the role of Akt/tuberin/mTORC1/2 in the regulation of N-cadherin and vimentin that are involved in the progression of fibrosis in kidney tumor of TSC patients.
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29
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Martignoni G, Pea M, Zampini C, Brunelli M, Segala D, Zamboni G, Bonetti F. PEComas of the kidney and of the genitourinary tract. Semin Diagn Pathol 2015; 32:140-59. [DOI: 10.1053/j.semdp.2015.02.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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30
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Anti-EGFR antibody reduces lung nodules by inhibition of EGFR-pathway in a model of lymphangioleiomyomatosis. BIOMED RESEARCH INTERNATIONAL 2015; 2015:315240. [PMID: 25699271 PMCID: PMC4324894 DOI: 10.1155/2015/315240] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 11/26/2014] [Indexed: 11/17/2022]
Abstract
EGFR belongs to the HER/ErbB family of tyrosine kinase receptors and its activation in cancer cells has been linked with increased proliferation, angiogenesis, and metastasis. Lymphangioleiomyomatosis (LAM) is a rare, low-grade neoplasm that occurs sporadically or in association with tuberous sclerosis complex (TSC), a genetic, multisystem disorder characterized by hamartomas in several organs. From chylous of a LAM/TSC patient, we previously isolated smooth muscle-like LAM/TSC cells whose proliferation depends on EGF and monoclonal anti-EGFR antibodies reduced proliferation and caused cell death. We demonstrated that the dependency from EGF was caused by the absence of tuberin. To study the role of EGFR pathway in vivo, we developed a mouse model by administration of LAM/TSC cells to female nude mice. LAM/TSC cells caused pulmonary airspace enlargement and, after 30 weeks, nodule formation which express EGFR. Anti-EGFR antibody decreased the number and dimension of lung nodules likely for the inhibition of Erk and S6 signaling, reversed the pulmonary alterations, and reduced lymphatic and blood vessels. Moreover, in pulmonary nodules anti-EGFR antibody reduced the positivity to estrogen and progesterone receptors which enhance survival of LAM cells and Snail expression. These results suggest that the inhibition of EGFR signalling has a potential in treatment of LAM/TSC lung alterations.
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31
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Konosu-Fukaya S, Nakamura Y, Fujishima F, Kasajima A, McNamara KM, Takahashi Y, Joh K, Saito H, Ioritani N, Ikeda Y, Arai Y, Watanabe M, Sasano H. Renal epithelioid angiomyolipoma with malignant features: Histological evaluation and novel immunohistochemical findings. Pathol Int 2014; 64:133-41. [PMID: 24698423 DOI: 10.1111/pin.12142] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 01/27/2014] [Indexed: 01/30/2023]
Abstract
Renal epithelioid angiomyolipoma (EAML) is a potentially malignant tumor type whose characteristics and biomarkers predictive of malignant behavior have not been elucidated. Here, we report three cases of renal EAML with malignant features but without histories of tuberous sclerosis complex. Case 1 involved a 29-year-old man with a 12-cm solid mass in the right kidney who underwent radical right nephrectomy. Case 2 involved a 22-year-old woman with a retroperitoneal mass who underwent radical right nephrectomy and retroperitoneal tumorectomy. Local recurrence was detected 7 years post-surgery. Case 3 involved a 23-year-old man with a 14-cm solid mass in the left kidney who underwent radical left nephrectomy. Microscopically, the tumors in all cases demonstrated proliferation of epithelioid cells with atypia, mitotic activity, necrosis, hemorrhage, and vascular invasion. Epithelioid cells in all cases were immunohistochemically positive for melanocytic and myoid markers and weakly positive for E-cadherin and β-catenin. Immunohistochemistry revealed activation of the mammalian target of rapamycin pathway. Here, we report the morphological and immunohistochemical features of clinically or histologically malignant renal EAML.
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Affiliation(s)
- Sachiko Konosu-Fukaya
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
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32
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Delaney SP, Julian LM, Stanford WL. The neural crest lineage as a driver of disease heterogeneity in Tuberous Sclerosis Complex and Lymphangioleiomyomatosis. Front Cell Dev Biol 2014; 2:69. [PMID: 25505789 PMCID: PMC4243694 DOI: 10.3389/fcell.2014.00069] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 11/02/2014] [Indexed: 12/20/2022] Open
Abstract
Lymphangioleiomyomatosis (LAM) is a rare neoplastic disease, best characterized by the formation of proliferative nodules that express smooth muscle and melanocytic antigens within the lung parenchyma, leading to progressive destruction of lung tissue and function. The pathological basis of LAM is associated with Tuberous Sclerosis Complex (TSC), a multi-system disorder marked by low-grade tumors in the brain, kidneys, heart, eyes, lung and skin, arising from inherited or spontaneous germ-line mutations in either of the TSC1 or TSC2 genes. LAM can develop either in a patient with TSC (TSC-LAM) or spontaneously (S-LAM), and it is clear that the majority of LAM lesions of both forms are characterized by an inactivating mutation in either TSC1 or TSC2, as in TSC. Despite this genetic commonality, there is considerable heterogeneity in the tumor spectrum of TSC and LAM patients, the basis for which is currently unknown. There is extensive clinical evidence to suggest that the cell of origin for LAM, as well as many of the TSC-associated tumors, is a neural crest cell, a highly migratory cell type with extensive multi-lineage potential. Here we explore the hypothesis that the types of tumors that develop and the tissues that are affected in TSC and LAM are dictated by the developmental timing of TSC gene mutations, which determines the identities of the affected cell types and the size of downstream populations that acquire a mutation. We further discuss the evidence to support a neural crest origin for LAM and TSC tumors, and propose approaches for generating humanized models of TSC and LAM that will allow cell of origin theories to be experimentally tested. Identifying the cell of origin and developing appropriate humanized models is necessary to truly understand LAM and TSC pathology and to establish effective and long-lasting therapeutic approaches for these patients.
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Affiliation(s)
- Sean P Delaney
- Sprott Centre for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute Ottawa, ON, Canada ; Faculty of Graduate and Postdoctoral Studies, University of Ottawa Ottawa, ON, Canada ; Department of Cellular and Molecular Medicine, University of Ottawa Ottawa, ON, Canada
| | - Lisa M Julian
- Sprott Centre for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute Ottawa, ON, Canada ; Faculty of Graduate and Postdoctoral Studies, University of Ottawa Ottawa, ON, Canada
| | - William L Stanford
- Sprott Centre for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute Ottawa, ON, Canada ; Faculty of Graduate and Postdoctoral Studies, University of Ottawa Ottawa, ON, Canada ; Department of Cellular and Molecular Medicine, University of Ottawa Ottawa, ON, Canada ; Department of Biochemistry, Microbiology, and Immunology, University of Ottawa Ottawa, ON, Canada
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33
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Yue Z, Feng W, Xiangke L, Liuxing W, Qingxia F, Jianbo G. WAVE3 promotes epithelial-mesenchymal transition of gastric cancer through upregulation of Snail. Cancer Gene Ther 2014; 21:499-506. [PMID: 25378074 DOI: 10.1038/cgt.2014.52] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 09/14/2014] [Accepted: 09/15/2014] [Indexed: 12/28/2022]
Abstract
WAVE3, an actin cytoskeleton remodeling protein overexpressed in many kinds of cancers, has been associated with a lot of metastatic diseases. However, the role and mechanisms of the high expression of WAVE3 in human gastric cancer has not been fully elucidated. Here we demonstrated that WAVE3 was expressed in all six kinds of gastric-cancer cell lines: BGC-823, SGC-7901, AGS, MGC803, MKN28 and MKN45. Furthermore, a correlation was found between aggressiveness of these cell lines and expression of WAVE3. Next, we investigated the role of WAVE3 in SGC-7901 cells and found that upregulating WAVE3 could promote the migration, invasion and proliferation of SGC-7901 cells in vitro. It has been reported that WAVE3 could induce cancer invasion and metastasis by participating epithelial-mesenchymal transition (EMT). However, the mechanisms are not entirely clear. In this study we showed that elevated WAVE3 levels could induce EMT in SGC-7901 cells by dampening the expression of E-cadherin while increasing the expression of vimentin. Elevated WAVE3 levels could also improve the expression of transcription factor Snail. In addition, downregulating Snail could particularly reduce EMT and the metastasis, invasion and proliferation activity in SGC-7901 cells elevated by overexpression of WAVE3. Taken together, we demonstrated that WAVE3 promoted gastric-cancer-cells migration and invasion by taking part in EMT via upregulation of Snail. WAVE3 could be a useful target for gastric-cancer prevention and therapy.
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Affiliation(s)
- Z Yue
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - W Feng
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - L Xiangke
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - W Liuxing
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - F Qingxia
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
| | - G Jianbo
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, PRC
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Li C, Zhang E, Sun Y, Lee PS, Zhan Y, Guo Y, Osorio JC, Rosas IO, Xu KF, Kwiatkowski DJ, Yu JJ. Rapamycin-insensitive up-regulation of adipocyte phospholipase A2 in tuberous sclerosis and lymphangioleiomyomatosis. PLoS One 2014; 9:e104809. [PMID: 25347447 PMCID: PMC4210122 DOI: 10.1371/journal.pone.0104809] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 07/14/2014] [Indexed: 11/18/2022] Open
Abstract
Tuberous sclerosis syndrome (TSC) is an autosomal dominant tumor suppressor gene syndrome affecting multiple organs, including renal angiomyolipomas and pulmonary lymphangioleiomyomatosis (LAM). LAM is a female-predominant interstitial lung disease characterized by the progressive cyst formation and respiratory failure, which is also seen in sporadic patients without TSC. Mutations in TSC1 or TSC2 cause TSC, result in hyperactivation of mammalian target of rapamycin (mTOR), and are also seen in LAM cells in sporadic LAM. We recently reported that prostaglandin biosynthesis and cyclooxygenase-2 were deregulated in TSC and LAM. Phospholipase A2 (PLA2) is the rate-limiting enzyme that catalyzes the conversion of plasma membrane phospholipids into prostaglandins. In this study, we identified upregulation of adipocyte AdPLA2 (PLA2G16) in LAM nodule cells using publicly available expression data. We showed that the levels of AdPLA2 transcript and protein were higher in LAM lungs compared with control lungs. We then showed that TSC2 negatively regulates the expression of AdPLA2, and loss of TSC2 is associated with elevated production of prostaglandin E2 (PGE2) and prostacyclin (PGI2) in cell culture models. Mouse model studies also showed increased expression of AdPLA2 in xenograft tumors, estrogen-induced lung metastatic lesions of Tsc2 null leiomyoma-derived cells, and spontaneous renal cystadenomas from Tsc2+/- mice. Importantly, rapamycin treatment did not affect the expression of AdPLA2 and the production of PGE2 by TSC2-deficient mouse embryonic fibroblast (Tsc2-/-MEFs), rat uterine leiomyoma-derived ELT3 cells, and LAM patient-associated renal angiomyolipoma-derived "mesenchymal" cells. Furthermore, methyl arachidonyl fluorophosphate (MAFP), a potent irreversible PLA2 inhibitor, selectively suppressed the growth and induced apoptosis of TSC2-deficient LAM patient-derived cells relative to TSC2-addback cells. Our findings suggest that AdPLA2 plays an important role in promoting tumorigenesis and disease progression by modulating the production of prostaglandins and may serve as a potential therapeutic target in TSC and LAM.
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Affiliation(s)
- Chenggang Li
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Erik Zhang
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Yang Sun
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Po-Shun Lee
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | | | - Yanan Guo
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Juan C. Osorio
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ivan O. Rosas
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Kai-Feng Xu
- Peking Union Medical College, Beijing, China
| | - David J. Kwiatkowski
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Jane J. Yu
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
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Charli-Joseph Y, Saggini A, Vemula S, Weier J, Mirza S, LeBoit PE. Primary cutaneous perivascular epithelioid cell tumor: a clinicopathological and molecular reappraisal. J Am Acad Dermatol 2014; 71:1127-36. [PMID: 25267378 DOI: 10.1016/j.jaad.2014.08.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/02/2014] [Accepted: 08/10/2014] [Indexed: 01/20/2023]
Abstract
BACKGROUND Perivascular epithelioid cell tumor (PEComa) is a rare neoplasm of uncertain histogenesis with a mixed myomelanocytic immunophenotype, rarely arising in the skin (primary cutaneous PEComa [pcPEComa]). OBJECTIVE We analyzed the clinicopathological features of 8 pcPEComas, assayed for DNA copy number changes and for initiating mutations common in melanocytic neoplasms. METHODS pcPEComas were evaluated using immunohistochemistry, comparative genomic hybridization, and DNA sequencing. RESULTS pcPEComas were erythematous nodules, mostly in the lower extremities of women (5/8), composed of large pale-staining epithelioid cells. The patient's age range was 26 to 67 (mean 46) years. The percentages of tumors staining positively were as follows: micro-ophthalmia-associated transcription factor, NKI/C3, bcl-1, E-cadherin, and cathepsin K (100%); HMB-45, 4E-binding protein 1, and CD68 (88%); smooth muscle actin and muscle-specific actin (40%); S100 (38%); calponin (20%); desmin (13%); and melan-A, SOX10, and keratin (0%). No chromosomal copy number changes or initiating mutations were identified. LIMITATIONS Small sample size is a limitation. CONCLUSIONS pcPEComas have a different molecular signature than extracutaneous tumors and are unrelated to tuberous sclerosis. However, the common expression of 4E-binding protein 1 points to a role of the mTOR pathway in their pathogenesis. Because pcPEComas are diagnostically challenging, we propose that micro-ophthalmia-associated transcription factor, NKIC3, smooth muscle actin, desmin, bcl-1, cathepsin K, and 4E-binding protein 1 can be used when evaluating a possible pcPEComa.
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Affiliation(s)
- Yann Charli-Joseph
- Pathology, University of California San Francisco, San Francisco, California; Dermatology, University of California San Francisco, San Francisco, California
| | - Andrea Saggini
- Pathology, University of California San Francisco, San Francisco, California; Dermatology, University of California San Francisco, San Francisco, California
| | - Swapna Vemula
- Pathology, University of California San Francisco, San Francisco, California
| | - Jingly Weier
- Pathology, University of California San Francisco, San Francisco, California
| | - Sonia Mirza
- Pathology, University of California San Francisco, San Francisco, California
| | - Philip E LeBoit
- Pathology, University of California San Francisco, San Francisco, California; Dermatology, University of California San Francisco, San Francisco, California; Helen A. Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California.
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Tyryshkin A, Bhattacharya A, Eissa NT. SRC kinase is a novel therapeutic target in lymphangioleiomyomatosis. Cancer Res 2014; 74:1996-2005. [PMID: 24691995 DOI: 10.1158/0008-5472.can-13-1256] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Lymphangioleiomyomatosis (LAM) is a progressive cystic lung disease affecting some women with tuberous sclerosis complex (TSC). Sporadic LAM can develop in women without TSC, owing to somatic mutations in the TSC2 gene. Accumulating evidence supports the view of LAM as a low-grade, destructive, metastasizing neoplasm. The mechanisms underlying the metastatic capability of LAM cells remain poorly understood. The observed behavior of LAM cells with respect to their infiltrative growth pattern, metastatic potential, and altered cell differentiation bears similarity to cells undergoing epithelial-mesenchymal transition. Here, we report increased levels of active Src kinase in LAM lungs and in TSC2(-/-) cells, caused by a reduction of autophagy. Furthermore, increased Src kinase activation promoted migration, invasion, and inhibition of E-cadherin expression in TSC2(-/-) cells by upregulating the transcription factor Snail. Notably, Src kinase inhibitors reduced migration and invasion properties of TSC2(-/-) cells and attenuated lung colonization of intravenously injected TSC2(-/-) cells in vivo to a greater extent than control TSC2(+/+) cells. Our results reveal mechanistic basis for the pathogenicity of LAM cells and they rationalize Src kinase as a novel therapeutic target for treatment of LAM and TSC.
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Affiliation(s)
- Alexey Tyryshkin
- Authors' Affiliation: Department of Medicine, Baylor College of Medicine, Houston, Texas
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Goncharova EA, Goncharov DA, James ML, Atochina-Vasserman EN, Stepanova V, Hong SB, Li H, Gonzales L, Baba M, Linehan WM, Gow AJ, Margulies S, Guttentag S, Schmidt LS, Krymskaya VP. Folliculin controls lung alveolar enlargement and epithelial cell survival through E-cadherin, LKB1, and AMPK. Cell Rep 2014; 7:412-423. [PMID: 24726356 PMCID: PMC4034569 DOI: 10.1016/j.celrep.2014.03.025] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 01/30/2014] [Accepted: 03/10/2014] [Indexed: 12/21/2022] Open
Abstract
Spontaneous pneumothoraces due to lung cyst rupture afflict patients with the rare disease Birt-Hogg-Dubé (BHD) syndrome, which is caused by mutations of the tumor suppressor gene folliculin (FLCN). The underlying mechanism of the lung manifestations in BHD is unclear. We show that BHD lungs exhibit increased alveolar epithelial cell apoptosis and that Flcn deletion in mouse lung epithelium leads to cell apoptosis, alveolar enlargement, and an impairment of both epithelial barrier and overall lung function. We find that Flcn-null epithelial cell apoptosis is the result of impaired AMPK activation and increased cleaved caspase-3. AMPK activator LKB1 and E-cadherin are downregulated by Flcn loss and restored by its expression. Correspondingly, Flcn-null cell survival is rescued by the AMPK activator AICAR or constitutively active AMPK. AICAR also improves lung condition of Flcn(f/f):SP-C-Cre mice. Our data suggest that lung cysts in BHD may result from an underlying defect in alveolar epithelial cell survival, attributable to FLCN regulation of the E-cadherin-LKB1-AMPK axis.
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Affiliation(s)
- Elena A Goncharova
- Pulmonary, Allergy and Critical Care Division, Airways Biology Initiative, Department of Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA; Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Dmitry A Goncharov
- Pulmonary, Allergy and Critical Care Division, Airways Biology Initiative, Department of Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA; Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Melane L James
- Pulmonary, Allergy and Critical Care Division, Airways Biology Initiative, Department of Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Elena N Atochina-Vasserman
- Pulmonary, Allergy and Critical Care Division, Airways Biology Initiative, Department of Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Victoria Stepanova
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Seung-Beom Hong
- Pulmonary, Allergy and Critical Care Division, Airways Biology Initiative, Department of Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Hua Li
- Pulmonary, Allergy and Critical Care Division, Airways Biology Initiative, Department of Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Linda Gonzales
- Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Masaya Baba
- Urologic Oncology Branch, National Cancer Institute, Bethesda, MD 20892, USA
| | - W Marston Linehan
- Urologic Oncology Branch, National Cancer Institute, Bethesda, MD 20892, USA
| | - Andrew J Gow
- Department of Pharmacology & Toxicology, Rutgers University, Piscataway, NJ 08854, USA
| | - Susan Margulies
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Susan Guttentag
- Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Laura S Schmidt
- Urologic Oncology Branch, National Cancer Institute, Bethesda, MD 20892, USA; Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 20892, USA
| | - Vera P Krymskaya
- Pulmonary, Allergy and Critical Care Division, Airways Biology Initiative, Department of Medicine, Perelman School of Medicine, Philadelphia, PA 19104, USA.
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Lesma E, Ancona S, Sirchia SM, Orpianesi E, Grande V, Colapietro P, Chiaramonte E, Di Giulio AM, Gorio A. TSC2 epigenetic defect in primary LAM cells. Evidence of an anchorage-independent survival. J Cell Mol Med 2014; 18:766-79. [PMID: 24606538 PMCID: PMC4119383 DOI: 10.1111/jcmm.12237] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 12/18/2013] [Indexed: 01/02/2023] Open
Abstract
Tuberous sclerosis complex (TSC) is caused by mutations in TSC1 or TSC2 genes. Lymphangioleiomyomatosis (LAM) can be sporadic or associated with TSC and is characterized by widespread pulmonary proliferation of abnormal α-smooth muscle (ASM)-like cells. We investigated the features of ASM cells isolated from chylous thorax of a patient affected by LAM associated with TSC, named LAM/TSC cells, bearing a germline TSC2 mutation and an epigenetic defect causing the absence of tuberin. Proliferation of LAM/TSC cells is epidermal growth factor (EGF)-dependent and blockade of EGF receptor causes cell death as we previously showed in cells lacking tuberin. LAM/TSC cells spontaneously detach probably for the inactivation of the focal adhesion kinase (FAK)/Akt/mTOR pathway and display the ability to survive independently from adhesion. Non-adherent LAM/TSC cells show an extremely low proliferation rate consistent with tumour stem-cell characteristics. Moreover, LAM/TSC cells bear characteristics of stemness and secrete high amount of interleukin (IL)-6 and IL-8. Anti-EGF receptor antibodies and rapamycin affect proliferation and viability of non-adherent cells. In conclusion, the understanding of LAM/TSC cell features is important in the assessment of cell invasiveness in LAM and TSC and should provide a useful model to test therapeutic approaches aimed at controlling their migratory ability.
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Affiliation(s)
- Elena Lesma
- Laboratory of Pharmacology, Dept. of Health Sciences, Università degli Studi di Milano, Milano, Italy
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Zhao H, Thong A, Nolley R, Reese SW, Santos J, Ingels A, Peehl DM. Patient-derived tissue slice grafts accurately depict response of high-risk primary prostate cancer to androgen deprivation therapy. J Transl Med 2013; 11:199. [PMID: 23985008 PMCID: PMC3766103 DOI: 10.1186/1479-5876-11-199] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 08/16/2013] [Indexed: 12/18/2022] Open
Abstract
Background Effective eradication of high-risk primary prostate cancer (HRPCa) could significantly decrease mortality from prostate cancer. However, the discovery of curative therapies for HRPCa is hampered by the lack of authentic preclinical models. Methods We improved upon tumorgraft models that have been shown to predict drug response in other cancer types by implanting thin, precision-cut slices of HRPCa under the renal capsule of immunodeficient mice. Tissue slice grafts (TSGs) from 6 cases of HRPCa were established in mice. Following androgen deprivation by castration, TSGs were recovered and the presence and phenotype of cancer cells were evaluated. Results High-grade cancer in TSGs generated from HRPCa displayed characteristic Gleason patterns and biomarker expression. Response to androgen deprivation therapy (ADT) was as in humans, with some cases exhibiting complete pathologic regression and others showing resistance to castration. As in humans, ADT decreased cell proliferation and prostate-specific antigen expression in TSGs. Adverse pathological features of parent HRPCa were associated with lack of regression of cancer in corresponding TSGs after ADT. Castration-resistant cancer cells remaining in TSGs showed upregulated expression of androgen receptor target genes, as occurs in castration-resistant prostate cancer (CRPC) in humans. Finally, a rare subset of castration-resistant cancer cells in TSGs underwent epithelial-mesenchymal transition, a process also observed in CRPC in humans. Conclusions Our study demonstrates the feasibility of generating TSGs from multiple patients and of generating a relatively large number of TSGs from the same HRPCa specimen with similar cell composition and histology among control and experimental samples in an in vivo setting. The authentic response of TSGs to ADT, which has been extensively characterized in humans, suggests that TSGs can serve as a surrogate model for clinical trials to achieve rapid and less expensive screening of therapeutics for HRPCa and primary CRPC.
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Affiliation(s)
- Hongjuan Zhao
- Department of Urology, Stanford University School of Medicine, Stanford, California, USA.
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Jiang L, Xu L, Mao J, Li J, Fang L, Zhou Y, Liu W, He W, Zhao AZ, Yang J, Dai C. Rheb/mTORC1 signaling promotes kidney fibroblast activation and fibrosis. J Am Soc Nephrol 2013; 24:1114-26. [PMID: 23661807 DOI: 10.1681/asn.2012050476] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Ras homolog enriched in brain (Rheb) is a small GTPase that regulates cell growth, differentiation, and survival by upregulating mammalian target of rapamycin complex 1 (mTORC1) signaling. The role of Rheb/mTORC1 signaling in the activation of kidney fibroblasts and the development of kidney fibrosis remains largely unknown. In this study, we found that Rheb/mTORC1 signaling was activated in interstitial myofibroblasts from fibrotic kidneys. Treatment of rat kidney interstitial fibroblasts (NRK-49F cell line) with TGFβ1 also activated Rheb/mTORC1 signaling. Blocking Rheb/mTORC1 signaling with rapamycin or Rheb small interfering RNA abolished TGFβ1-induced fibroblast activation. In a transgenic mouse, ectopic expression of Rheb activated kidney fibroblasts. These Rheb transgenic mice exhibited increased activation of mTORC1 signaling in both kidney tubular and interstitial cells as well as progressive interstitial renal fibrosis; rapamycin inhibited these effects. Similarly, mice with fibroblast-specific deletion of Tsc1, a negative regulator of Rheb, exhibited activated mTORC1 signaling in kidney interstitial fibroblasts and increased renal fibrosis, both of which rapamycin abolished. Taken together, these results suggest that Rheb/mTORC1 signaling promotes the activation of kidney fibroblasts and contributes to the development of interstitial fibrosis, possibly providing a therapeutic target for progressive renal disease.
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Affiliation(s)
- Lei Jiang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
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Targeting carbonic anhydrase IX depletes breast cancer stem cells within the hypoxic niche. Oncogene 2012. [PMID: 23208505 DOI: 10.1038/onc.2012.550] [Citation(s) in RCA: 261] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The sub-population of tumor cells termed 'cancer stem cells' (CSCs) possess the capability to generate tumors, undergo epithelial-mesenchymal transition (EMT) and are implicated in metastasis, making treatments to specifically target CSCs an attractive therapeutic strategy. Tumor hypoxia plays a key role in regulating EMT and cancer stem cell function. Carbonic anhydrase IX (CAIX) is a hypoxia-inducible protein that regulates cellular pH to promote cancer cell survival and invasion in hypoxic microenvironments and is a biomarker of poor prognosis for breast cancer metastasis and survival. Here, we demonstrate that inhibition of CAIX expression or activity with novel small-molecule inhibitors in breast cancer cell lines, or in primary metastatic breast cancer cells, results in the inhibition of breast CSC expansion in hypoxia. We identify the mTORC1 axis as a critical pathway downstream of CAIX in the regulation of cancer stem cell function. CAIX is also required for expression of EMT markers and regulators, as well as drivers of 'stemness', such as Notch1 and Jagged1 in isolated CSCs. In addition, treatment of mice bearing orthotopic breast tumors with CAIX-specific small-molecule inhibitors results in significant depletion of CSCs within these tumors. Furthermore, combination treatment with paclitaxel results in enhanced tumor growth delay and eradication of lung metastases. These data demonstrate that CAIX is a critical mediator of the expansion of breast CSCs in hypoxic niches by sustaining the mesenchymal and 'stemness' phenotypes of these cells, making CAIX an important therapeutic target for selectively depleting breast CSCs.
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Wang Z, Gong Q, Fan Q. Expression of E-cadherin in angiomyolipoma. Hum Pathol 2012; 43:2348-53. [PMID: 22939576 DOI: 10.1016/j.humpath.2012.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Revised: 04/19/2012] [Accepted: 04/20/2012] [Indexed: 10/27/2022]
Abstract
Angiomyolipoma is the most common member of perivascular epithelioid cell tumors that characteristically express myogenic and melanocytic markers. E-cadherin is a calcium-dependent cell-cell adhesion molecule that is repressed in epithelial to mesenchymal transition occurring in carcinomas. E-cadherin has not, thus far, been systematically studied in angiomyolipoma. We analyzed a series of 42 angiomyolipomas with E-cadherin and discussed its clinicopathologic significance. Forty-two cases of angiomyolipomas (35 renal, 5 hepatic, and 2 retroperitoneal) were examined histologically. E-cadherin was investigated immunohistochemically and compared with other significant markers found in angiomyolipoma in all cases. The percentages of tumors staining positively were E-cadherin (98%), smooth muscle actin (98%), actin (93%), HMB-45 (93%), Melan-A (90%), S-100 (38%), and CD117 (60%). The intensity of E-cadherin staining was moderate to strong in 30 cases (71%). E-cadherin stained both the cytoplasm and cell membrane of tumor cells, but membrane staining was stronger in the epithelioid tumor cells than in the spindle-shaped tumor cells. E-cadherin may serve as an additional diagnostic marker for angiomyolipoma. Angiomyolipoma should be included in the differential diagnosis of E-cadherin-positive tumors. Stronger membrane immunoreactivity for E-cadherin in epithelioid tumor cells is possibly related to constitution of their epithelioid architecture, but the pathogenetic significance of E-cadherin in angiomyolipoma remains to be further studied.
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Affiliation(s)
- Zhen Wang
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Zhu XY, Liu N, Liu W, Song SW, Guo KJ. Silencing of the integrin-linked kinase gene suppresses the proliferation, migration and invasion of pancreatic cancer cells (Panc-1). Genet Mol Biol 2012; 35:538-44. [PMID: 22888305 PMCID: PMC3389544 DOI: 10.1590/s1415-47572012005000028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 03/16/2012] [Indexed: 01/07/2023] Open
Abstract
Integrin-linked kinase (ILK) is an ankyrin repeat-containing serine-threonine protein kinase that is involved in the regulation of integrin-mediated processes such as cancer cell proliferation, migration and invasion. In this study, we examined the effect of a lentivirus-mediated knockdown of ILK on the proliferation, migration and invasion of pancreatic cancer (Panc-1) cells. Immunohistochemical staining showed that ILK expression was enhanced in pancreatic cancer tissue. The silencing of ILK in human Panc-1 cells led to cell cycle arrest in the G0/G1 phase and delayed cell proliferation, in addition to down-regulating cell migration and invasion. The latter effects were mediated by up-regulating the expression of E-cadherin, a key protein in cell adhesion. These findings indicate that ILK may be a new diagnostic marker for pancreatic cancer and that silencing ILK could be a potentially useful therapeutic approach for treating pancreatic cancer.
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Affiliation(s)
- Xiang-Yu Zhu
- Department of Pancreatic and Gastrointestinal Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
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Guadamillas MC, Cerezo A, Del Pozo MA. Overcoming anoikis--pathways to anchorage-independent growth in cancer. J Cell Sci 2012; 124:3189-97. [PMID: 21940791 DOI: 10.1242/jcs.072165] [Citation(s) in RCA: 303] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Anoikis (or cell-detachment-induced apoptosis) is a self-defense strategy that organisms use to eliminate 'misplaced' cells, i.e. cells that are in an inappropriate location. Occasionally, detached or misplaced cells can overcome anoikis and survive for a certain period of time in the absence of the correct signals from the extracellular matrix (ECM). If cells are able to adapt to their new environment, then they have probably become anchorage-independent, which is one of the hallmarks of cancer cells. Anoikis resistance and anchorage-independency allow tumor cells to expand and invade adjacent tissues, and to disseminate through the body, giving rise to metastasis. Thus, overcoming anoikis is a crucial step in a series of changes that a tumor cell undergoes during malignant transformation. Tumor cells have developed a variety of strategies to bypass or overcome anoikis. Some strategies consist of adaptive cellular changes that allow the cells to behave as they would in the correct environment, so that induction of anoikis is aborted. Other strategies aim to counteract the negative effects of anoikis induction by hyperactivating survival and proliferative cascades. The recently discovered processes of autophagy and entosis also highlight the contribution of these mechanisms to rendering the cells in a dormant state until they receive a signal initiated at the ECM, thereby circumventing anoikis. In all situations, the final outcome is the ability of the tumor to grow and metastasize. A better understanding of the mechanisms underlying anoikis resistance could help to counteract tumor progression and prevent metastasis formation.
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Affiliation(s)
- Marta C Guadamillas
- Integrin Signaling Laboratory, Department of Vascular Biology and Inflammation, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro 3, 28029 Madrid, Spain
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Tonoike Y, Matsushita K, Tomonaga T, Katada K, Tanaka N, Shimada H, Nakatani Y, Okamoto Y, Nomura F. Adhesion molecule periplakin is involved in cellular movement and attachment in pharyngeal squamous cancer cells. BMC Cell Biol 2011; 12:41. [PMID: 21951621 PMCID: PMC3195110 DOI: 10.1186/1471-2121-12-41] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Accepted: 09/27/2011] [Indexed: 01/25/2023] Open
Abstract
Background We previously reported that periplakin (PPL) is downregulated in human esophageal cancer tissues compared to the adjacent non-cancer epithelium. Thus PPL could be a useful marker for detection of early esophageal cancer and evaluation of tumor progression, but largely remains unknown in this field. To investigate PPL involvement in carcinogenesis, tumor progression, cellular movement or attachment activity, siRNAs against PPL were transfected into pharyngeal squamous cancer cell lines and their effects on cellular behaviours were examined. Results PPL knockdown appeared to decrease tumor cell growth together with G2/M phase accumulation in cells attached to a culture dish. However, the extent of cell growth suppression, evaluated by the number of cells attached to the culture dish, was too distinctive to be explained only by cell cycle delay. Importantly, PPL knockdown suppressed cellular movement and attachment to the culture dish accompanied by decreased pAktSer473 phosphorylation. Additionally, LY294002, a PI3K inhibitor that dephosphorylates pAktSer473, significantly suppressed D562 cell migration. Thus PPL potentially engages in cellular movement al least partly via the PI3K/Akt axis. Conclusions PPL knockdown is related to reduced cellular movement and attachment activity in association with PI3K/Akt axis suppression, rather than malignant progression in pharyngeal cancer cells.
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Affiliation(s)
- Yurie Tonoike
- Department of Otorhinolaryngology, Chiba University Hospital, Chiba City, Japan
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Horstmann M, Geiger LM, Vogel U, Schmid H, Hennenlotter J, Kuehs U, Merseburger AS, Kruck S, Stenzl A, Bedke J. Kidney-specific cadherin correlates with the ontogenetic origin of renal cell carcinoma subtypes: an indicator of a malignant potential? World J Urol 2011; 30:525-31. [PMID: 21928123 DOI: 10.1007/s00345-011-0763-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 09/03/2011] [Indexed: 10/17/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES To evaluate retrospectively kidney-specific cadherin (Ksp-cad) expression in renal cell carcinoma (RCC) subtypes and oncocytoma in correlation with its ontogenetic origin of distal and proximal tubules and to correlate Ksp-cad expression with tumour characteristics. MATERIALS AND METHODS Membranous and cytoplasmic expression of Ksp-cad was determined in 40 clear cell (ccRCC), 25 papillary (pRCC), 19 chromophobe carcinomas (chRCC), 27 oncocytomas (oncocytomas) (n = 111) and 32 benign kidney parenchyma specimens separated in distal tubules (DT) and proximal tubules (PT) by immunohistochemistry using tissue microarray technique. Staining intensity was quantified as a score ranging from 0 to 12. Comparison of data and correlation with tumour characteristics were done by Wilcoxon/Kruskal-Wallis tests (post hoc Tukey-Kramer analysis). RESULTS In benign renal tissue, membranous and cytoplasmic expression of Ksp-cad in the DT was significantly higher than that in the PT (12.0 ± 0 vs. 5.2 ± 0.3 and 6.3 ± 0.5 vs. 0.0 ± 0.0, respectively; (P < 0.05)). Membranous KSP-cad expression was significantly higher in chRCC (5.2 ± 0.8) and oncocytomas (3.7 ± 0.4) than that in ccRCC (0.8 ± 0.2) and pRCC (1.4 ± 0.4; P < 0.05), while expression between oncocytomas and chRCC did not differ significantly. In RCC, Ksp-cad expression was significantly associated with higher T stage and the occurrence of synchronous metastasis (P < 0.05). Higher N stages and grading tended to correlate with a lower Ksp-cad expression. CONCLUSIONS In this cohort, the origin of tumour subtypes-chRCC and oncocytomas develop from DT and ccRCC and pRCC from PT cells-is mirrored by the respective Ksp-cad expression. This raises the question whether DT-derived tumours have a less malignant potential than PT-derived tumours.
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Affiliation(s)
- M Horstmann
- Department of Urology, Eberhard Karls University Tuebingen, Hoppe-Seyler-Strasse 3, Tuebingen, Germany.
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Whaley-Connell A, Habibi J, Panfili Z, Hayden MR, Bagree S, Nistala R, Hyder S, Krueger B, Demarco V, Pulakat L, Ferrario CM, Parrish A, Sowers JR. Angiotensin II activation of mTOR results in tubulointerstitial fibrosis through loss of N-cadherin. Am J Nephrol 2011; 34:115-25. [PMID: 21720156 DOI: 10.1159/000329327] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 05/10/2011] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIMS Angiotensin (Ang) II contributes to tubulointerstitial fibrosis. Recent data highlight mammalian target of rapamycin (mTOR)/S6 kinase 1 (S6K1) signaling in tubulointerstitial fibrosis; however, the mechanisms remain unclear. Thereby, we investigated the role of Ang II on mTOR/S6K1-dependent proximal tubule (PT) injury, remodeling, and fibrosis. METHODS We utilized young transgenic Ren2 rats (R2-T) and Sprague-Dawley rats (SD-T) treated with the Ang type 1 receptor (AT(1)R) blocker telmisartan (2 mg · kg(-1) · day(-1)) or vehicle (R2-C; SD-C) for 3 weeks to examine PT structure and function. RESULTS Ren2 rats displayed increased systolic blood pressure, proteinuria and increased PT oxidant stress and remodeling. There were parallel increases in kidney injury molecule-1 and reductions in neprilysin and megalin with associated ultrastructural findings of decreased clathrin-coated pits, endosomes, and vacuoles. Ren2 rats displayed increased Serine(2448) phosphorylation of mTOR and downstream S6K1, in concert with ultrastructural basement membrane thickening, tubulointerstitial fibrosis and loss of the adhesion molecule N-cadherin. Telmisartan treatment attenuated proteinuria as well as the biochemical and tubulointerstitial structural abnormalities seen in the Ren2 rats. CONCLUSIONS Our observations suggest that Ang II activation of the AT(1)R contributes to PT brush border injury and remodeling, in part, due to enhanced mTOR/S6K1 signaling which promotes tubulointerstitial fibrosis through loss of N-cadherin.
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Affiliation(s)
- Adam Whaley-Connell
- Harry S. Truman VA Medical Center, and the University of Missouri-Columbia School of Medicine, USA. whaleyconnella @ health.missouri.edu
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Xie L, Jessurun J, Manivel JC, Pambuccian SE. Hepatic epithelioid angiomyolipoma with trabecular growth pattern: a mimic of hepatocellular carcinoma on fine needle aspiration cytology. Diagn Cytopathol 2011; 40:639-50. [PMID: 21563318 DOI: 10.1002/dc.21703] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Accepted: 02/25/2011] [Indexed: 01/10/2023]
Abstract
Epithelioid angiomyolipomas (AMLs) of the liver are rare tumors with imaging and cytologic features overlapping with those of hepatocellular carcinomas. We report the fine needle aspiration and core biopsy findings of an epithelioid AML in the right hepatic lobe of a 32-year-old female with tuberous sclerosis. She had undergone renal transplantation 8 years previously after bilateral nephrectomy for renal AMLs and a 3-cm chromophobe renal cell carcinoma. Hepatocellular carcinoma was suspected during the initial cytologic and histologic examination based on the presence of numerous large polygonal cells with ample finely vacuolated or granular cytoplasm, low nucleocytoplasmic ratio, and mild nuclear pleomorphism in the smears, as well as a distinctive trabecular histologic pattern in the core biopsies. Immunoperoxidase stains showed that the neoplastic cells were negative for cytokeratins and positive for HMB45, Melan-A, and smooth muscle actin, establishing the diagnosis of epithelioid AML. To determine the distinguishing cytomorphologic features between epithelioid AML and HCC, we have compared the cytologic features of 15 cases of hepatic AML reported in the literature, including the present case, to the FNA cytologic findings of 38 consecutive cases of HCC diagnosed at out institution.
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Affiliation(s)
- Linjun Xie
- Department of Laboratory Medicine and Pathology, University of Minnesota Medical School, Minneapolis, Minnesota 55455, USA
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