1
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Patterson MR, Meijers AS, Ryder EL, Wootton LM, Scarth JA, Evans D, Turner AL, Wasson CW, Darell JE, Theobald DA, Cogan JA, James CD, Wang M, Ladbury JE, Morgan IM, Samson A, Morgan EL, Macdonald A. E7-mediated repression of miR-203 promotes LASP1-dependent proliferation in HPV-positive cervical cancer. Oncogene 2024; 43:2184-2198. [PMID: 38789663 PMCID: PMC11226402 DOI: 10.1038/s41388-024-03067-4] [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: 02/02/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024]
Abstract
Human papillomaviruses (HPV) are a major cause of malignancy, contributing to ~5% of all human cancers worldwide, including most cervical cancer cases and a growing number of anogenital and oral cancers. The major HPV viral oncogenes, E6 and E7, manipulate many host cellular pathways that promote cell proliferation and survival, predisposing infected cells to malignant transformation. Despite the availability of highly effective vaccines, there are still no specific anti-viral therapies targeting HPV or treatments for HPV-associated cancers. As such, a better understanding of viral-host interactions may allow the identification of novel therapeutic targets. Here, we demonstrate that the actin-binding protein LASP1 is upregulated in cervical cancer and significantly correlates with a poorer overall survival. In HPV positive cervical cancer, LASP1 depletion significantly inhibited the oncogenic phenotype in vitro, whilst having minimal effects in HPV negative cervical cancer cells. Furthermore, we demonstrate that the LASP1 SH3 domain is essential for LASP1-mediated oncogenicity in these cells. Mechanistically, we show that HPV E7 regulates LASP1 at the post-transcriptional level by repressing the expression of miR-203, which negatively regulates LASP1 mRNA levels by binding to its 3'UTR. Finally, we demonstrate that LASP1 expression is required for the growth of HPV positive cervical cancer cells in an in vivo tumourigenicity model. Together, these data demonstrate that HPV induces LASP1 expression to promote proliferation and survival in cervical cancer, thus identifying a potential therapeutic target in these cancers.
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Affiliation(s)
- Molly R Patterson
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Aniek S Meijers
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Emma L Ryder
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | | | - James A Scarth
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
- Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Debra Evans
- Leeds Institute of Medical Research, St James's University Hospital, University of Leeds, Leeds, UK
| | - Amy L Turner
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Christopher W Wasson
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, School of Medicine, University of Leeds, St-James University Teaching Hospital, Leeds, UK
| | - Janne E Darell
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Daisy A Theobald
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Joseph A Cogan
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Claire D James
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University (VCU), Richmond, VA, USA
| | - Miao Wang
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - John E Ladbury
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Iain M Morgan
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University (VCU), Richmond, VA, USA
- VCU Massey Cancer Center, VCU, Richmond, VA, USA
| | - Adel Samson
- Leeds Institute of Medical Research, St James's University Hospital, University of Leeds, Leeds, UK
| | - Ethan L Morgan
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK.
- School of Life Sciences, University of Sussex, Brighton, UK.
| | - Andrew Macdonald
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK.
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2
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Patterson MR, Meijers AS, Ryder EL, Scarth JA, Evans D, Turner AL, Wasson CW, Darell JE, Theobald D, Cogan J, James CD, Wang M, Ladbury JE, Morgan IM, Samson A, Morgan EL, Macdonald A. E7-mediated repression of miR-203 promotes LASP1-dependent proliferation in HPV-positive cervical cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.08.574687. [PMID: 38293147 PMCID: PMC10827106 DOI: 10.1101/2024.01.08.574687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Human papillomaviruses (HPV) are a major cause of malignancy, contributing to ∼5% of all human cancers worldwide, including most cervical cancer cases and a growing number of ano-genital and oral cancers. The major HPV viral oncogenes, E6 and E7, manipulate many host cellular pathways that promote cell proliferation and survival, predisposing infected cells to malignant transformation. Despite the availability of highly effective vaccines, there are still no specific anti-viral therapies targeting HPV or treatments for HPV-associated cancers. As such, a better understanding of viral-host interactions may allow the identification of novel therapeutic targets. Here, we demonstrate that the actin-binding protein LASP1 is upregulated in cervical cancer and significantly correlates with a poorer overall survival. In HPV positive cervical cancer, LASP1 depletion significantly inhibited proliferation in vitro , whilst having minimal effects in HPV negative cervical cancer cells. Furthermore, we show that the LASP1 SH3 domain is essential for LASP1-mediated proliferation in these cells. Mechanistically, we show that HPV E7 regulates LASP1 at the post-transcriptional level by repressing the expression of miR-203, which negatively regulated LASP1 mRNA levels by binding to its 3'UTR. Finally, we demonstrated that LASP1 expression is required for the growth of HPV positive cervical cancer cells in an in vivo tumourigenicity model. Together, these data demonstrate that HPV induces LASP1 expression to promote proliferation and survival role in cervical cancer, thus identifying a potential therapeutic target in these cancers.
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3
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Karimi N, Motovali-Bashi M, Ghaderi-Zefrehei M. Gene network reveals LASP1, TUBA1C, and S100A6 are likely playing regulatory roles in multiple sclerosis. Front Neurol 2023; 14:1090631. [PMID: 36970516 PMCID: PMC10035600 DOI: 10.3389/fneur.2023.1090631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 02/10/2023] [Indexed: 03/11/2023] Open
Abstract
IntroductionMultiple sclerosis (MS), a non-contagious and chronic disease of the central nervous system, is an unpredictable and indirectly inherited disease affecting different people in different ways. Using Omics platforms genomics, transcriptomics, proteomics, epigenomics, interactomics, and metabolomics database, it is now possible to construct sound systems biology models to extract full knowledge of the MS and recognize the pathway to uncover the personalized therapeutic tools.MethodsIn this study, we used several Bayesian Networks in order to find the transcriptional gene regulation networks that drive MS disease. We used a set of BN algorithms using the R add-on package bnlearn. The BN results underwent further downstream analysis and were validated using a wide range of Cytoscape algorithms, web based computational tools and qPCR amplification of blood samples from 56 MS patients and 44 healthy controls. The results were semantically integrated to improve understanding of the complex molecular architecture underlying MS, distinguishing distinct metabolic pathways and providing a valuable foundation for the discovery of involved genes and possibly new treatments.ResultsResults show that the LASP1, TUBA1C, and S100A6 genes were most likely playing a biological role in MS development. Results from qPCR showed a significant increase (P < 0.05) in LASP1 and S100A6 gene expression levels in MS patients compared to that in controls. However, a significant down regulation of TUBA1C gene was observed in the same comparison.ConclusionThis study provides potential diagnostic and therapeutic biomarkers for enhanced understanding of gene regulation underlying MS.
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Affiliation(s)
- Nafiseh Karimi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Majid Motovali-Bashi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
- *Correspondence: Majid Motovali-Bashi
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Lasp1 regulates adherens junction dynamics and fibroblast transformation in destructive arthritis. Nat Commun 2021; 12:3624. [PMID: 34131132 PMCID: PMC8206096 DOI: 10.1038/s41467-021-23706-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 05/11/2021] [Indexed: 02/05/2023] Open
Abstract
The LIM and SH3 domain protein 1 (Lasp1) was originally cloned from metastatic breast cancer and characterised as an adaptor molecule associated with tumourigenesis and cancer cell invasion. However, the regulation of Lasp1 and its function in the aggressive transformation of cells is unclear. Here we use integrative epigenomic profiling of invasive fibroblast-like synoviocytes (FLS) from patients with rheumatoid arthritis (RA) and from mouse models of the disease, to identify Lasp1 as an epigenomically co-modified region in chronic inflammatory arthritis and a functionally important binding partner of the Cadherin-11/β-Catenin complex in zipper-like cell-to-cell contacts. In vitro, loss or blocking of Lasp1 alters pathological tissue formation, migratory behaviour and platelet-derived growth factor response of arthritic FLS. In arthritic human TNF transgenic mice, deletion of Lasp1 reduces arthritic joint destruction. Therefore, we show a function of Lasp1 in cellular junction formation and inflammatory tissue remodelling and identify Lasp1 as a potential target for treating inflammatory joint disorders associated with aggressive cellular transformation.
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Leung CS, Yeung TL, Yip KP, Wong KK, Ho SY, Mangala LS, Sood AK, Lopez-Berestein G, Sheng J, Wong ST, Birrer MJ, Mok SC. Cancer-associated fibroblasts regulate endothelial adhesion protein LPP to promote ovarian cancer chemoresistance. J Clin Invest 2017; 128:589-606. [PMID: 29251630 DOI: 10.1172/jci95200] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 11/07/2017] [Indexed: 02/06/2023] Open
Abstract
The molecular mechanism by which cancer-associated fibroblasts (CAFs) confer chemoresistance in ovarian cancer is poorly understood. The purpose of the present study was to evaluate the roles of CAFs in modulating tumor vasculature, chemoresistance, and disease progression. Here, we found that CAFs upregulated the lipoma-preferred partner (LPP) gene in microvascular endothelial cells (MECs) and that LPP expression levels in intratumoral MECs correlated with survival and chemoresistance in patients with ovarian cancer. Mechanistically, LPP increased focal adhesion and stress fiber formation to promote endothelial cell motility and permeability. siRNA-mediated LPP silencing in ovarian tumor-bearing mice improved paclitaxel delivery to cancer cells by decreasing intratumoral microvessel leakiness. Further studies showed that CAFs regulate endothelial LPP via a calcium-dependent signaling pathway involving microfibrillar-associated protein 5 (MFAP5), focal adhesion kinase (FAK), ERK, and LPP. Thus, our findings suggest that targeting endothelial LPP enhances the efficacy of chemotherapy in ovarian cancer. Our data highlight the importance of CAF-endothelial cell crosstalk signaling in cancer chemoresistance and demonstrate the improved efficacy of using LPP-targeting siRNA in combination with cytotoxic drugs.
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Affiliation(s)
- Cecilia S Leung
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, USA
| | - Tsz-Lun Yeung
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kay-Pong Yip
- Department of Molecular Pharmacology and Physiology, University of South Florida, Tampa, Florida, USA
| | - Kwong-Kwok Wong
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, USA
| | - Samuel Y Ho
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Lingegowda S Mangala
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Cancer Biology.,The Center for RNA Interference and Non-Coding RNAs, and
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Cancer Biology.,The Center for RNA Interference and Non-Coding RNAs, and
| | - Gabriel Lopez-Berestein
- Department of Cancer Biology.,The Center for RNA Interference and Non-Coding RNAs, and.,Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jianting Sheng
- Department of Systems Medicine and Bioengineering, and.,NCI Center for Modeling Cancer Development, Houston Methodist Research Institute, Houston, Texas, USA
| | - Stephen Tc Wong
- Department of Systems Medicine and Bioengineering, and.,NCI Center for Modeling Cancer Development, Houston Methodist Research Institute, Houston, Texas, USA
| | - Michael J Birrer
- Comprehensive Cancer Center, Division of Hematology-Oncology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Samuel C Mok
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, USA
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6
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Ngan E, Kiepas A, Brown CM, Siegel PM. Emerging roles for LPP in metastatic cancer progression. J Cell Commun Signal 2017; 12:143-156. [PMID: 29027626 DOI: 10.1007/s12079-017-0415-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 10/03/2017] [Indexed: 01/21/2023] Open
Abstract
LIM domain containing proteins are important regulators of diverse cellular processes, and play pivotal roles in regulating the actin cytoskeleton. Lipoma Preferred Partner (LPP) is a member of the zyxin family of LIM proteins that has long been characterized as a promoter of mesenchymal/fibroblast cell migration. More recently, LPP has emerged as a critical inducer of tumor cell migration, invasion and metastasis. LPP is thought to contribute to these malignant phenotypes by virtue of its ability to shuttle into the nucleus, localize to adhesions and, most recently, to promote invadopodia formation. In this review, we will examine the mechanisms through which LPP regulates the functions of adhesions and invadopodia, and discuss potential roles of LPP in mediating cellular responses to mechanical cues within these mechanosensory structures.
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Affiliation(s)
- Elaine Ngan
- Goodman Cancer Research Centre, McGill University, 1160 Pine Avenue West, Room 508, Montréal, Québec, H3A 1A3, Canada.,Department of Medicine, McGill University, Montréal, Québec, Canada
| | - Alex Kiepas
- Department of Physiology, McGill University, Montréal, Québec, Canada
| | - Claire M Brown
- Department of Physiology, McGill University, Montréal, Québec, Canada
| | - Peter M Siegel
- Goodman Cancer Research Centre, McGill University, 1160 Pine Avenue West, Room 508, Montréal, Québec, H3A 1A3, Canada. .,Department of Medicine, McGill University, Montréal, Québec, Canada.
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7
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Clavier S, Illien F, Sagan S, Bolbach G, Sachon E. Proteomic comparison of the EWS-FLI1 expressing cells EF with NIH-3T3 and actin remodeling effect of (R/W) 9 cell-penetrating peptide. EUPA OPEN PROTEOMICS 2015; 10:1-8. [PMID: 29900093 PMCID: PMC5988571 DOI: 10.1016/j.euprot.2015.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/25/2015] [Accepted: 10/25/2015] [Indexed: 12/13/2022]
Abstract
Comparison of tumoral EF versus non-tumoral 3T3 fibroblasts (SILAC). Characterization of EWS-FLI1 fusion protein impact on protein expression levels. Down-regulation of actin binding proteins responsible for passive dissemination. Investigation of (R/W)9 cell-penetrating peptide actin remodeling activity. First proteomics study using a cell-penetrating peptide (R/W)9.
EWS-FLI1 expression in NIH-3T3 fibroblasts has a profound impact on the phenotype, resulting in the cytoskeleton and adhesive capacity disorganization (EF cells). Besides this, (R/W)9, a cell-penetrating peptide (CPP), has an intrinsic actin remodeling activity in EF cells. To evaluate the impact of the oncogenic protein EWS-FLI1 on proteins expression levels, a quantitative comparison of tumoral EF and non-tumoral 3T3 proteomes was performed. Then to see if we could link the EWS-FLI1 oncogenic transformation to the phenotype reversion induced by (R/W)9, (R/W)9 influence on EF cells proteome was assessed. To our knowledge no such CPPomic study has been performed before. Biological significance Up to now very few global quantitative proteomic studies have been published to help understand the oncogenic transformation induced by EWS-FLI1 fusion protein and leading to Ewing sarcoma development and dissemination. The comparison we did in this study between a model tumoral cell line EF and its non-tumoral counterpart (3T3) allowed us to highlight several features either common to most tumor types or specific to Ewing sarcoma. Particularly, lack of actin cytoskeleton organization could very likely be explained by the down-regulation of many important actin binding proteins. These results are in accordance with the hypothesis of a passive/stochastic mode of dissemination conferring Ewing sarcoma tumoral cell a high metastatic potential.
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Affiliation(s)
- Séverine Clavier
- Sorbonne Université, UPMC-Univ Paris 6, Ecole Normale Supérieure, PSL Research University, Département de Chimie, CNRS, UMR7203 Laboratoire des BioMolécules, 4 Place Jussieu, Paris Cedex 05, 75252 Paris, France.,Sorbonne Université, UPMCUniv Paris 6, Plateforme de Spectrométrie de Masse et Protéomique-IBPS, cc41, 7-9 Quai Saint Bernard, Paris Cedex 05, 75252 Paris, France
| | - Françoise Illien
- Sorbonne Université, UPMCUniv Paris 6, Plateforme de Spectrométrie de Masse et Protéomique-IBPS, cc41, 7-9 Quai Saint Bernard, Paris Cedex 05, 75252 Paris, France
| | - Sandrine Sagan
- Sorbonne Université, UPMCUniv Paris 6, Plateforme de Spectrométrie de Masse et Protéomique-IBPS, cc41, 7-9 Quai Saint Bernard, Paris Cedex 05, 75252 Paris, France
| | - Gérard Bolbach
- Sorbonne Université, UPMC-Univ Paris 6, Ecole Normale Supérieure, PSL Research University, Département de Chimie, CNRS, UMR7203 Laboratoire des BioMolécules, 4 Place Jussieu, Paris Cedex 05, 75252 Paris, France.,Sorbonne Université, UPMCUniv Paris 6, Plateforme de Spectrométrie de Masse et Protéomique-IBPS, cc41, 7-9 Quai Saint Bernard, Paris Cedex 05, 75252 Paris, France
| | - Emmanuelle Sachon
- Sorbonne Université, UPMC-Univ Paris 6, Ecole Normale Supérieure, PSL Research University, Département de Chimie, CNRS, UMR7203 Laboratoire des BioMolécules, 4 Place Jussieu, Paris Cedex 05, 75252 Paris, France.,Sorbonne Université, UPMCUniv Paris 6, Plateforme de Spectrométrie de Masse et Protéomique-IBPS, cc41, 7-9 Quai Saint Bernard, Paris Cedex 05, 75252 Paris, France
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8
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Orth MF, Cazes A, Butt E, Grunewald TGP. An update on the LIM and SH3 domain protein 1 (LASP1): a versatile structural, signaling, and biomarker protein. Oncotarget 2015; 6:26-42. [PMID: 25622104 PMCID: PMC4381576 DOI: 10.18632/oncotarget.3083] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 12/28/2014] [Indexed: 01/15/2023] Open
Abstract
The gene encoding the LIM and SH3 domain protein (LASP1) was cloned two decades ago from a cDNA library of breast cancer metastases. As the first protein of a class comprising one N-terminal LIM and one C-terminal SH3 domain, LASP1 founded a new LIM-protein subfamily of the nebulin group. Since its discovery LASP1 proved to be an extremely versatile protein because of its exceptional structure allowing interaction with various binding partners, its ubiquitous expression in normal tissues, albeit with distinct expression patterns, and its ability to transmit signals from the cytoplasm into the nucleus. As a result, LASP1 plays key roles in cell structure, physiological processes, and cell signaling. Furthermore, LASP1 overexpression contributes to cancer aggressiveness hinting to a potential value of LASP1 as a cancer biomarker. In this review we summarize published data on structure, regulation, function, and expression pattern of LASP1, with a focus on its role in human cancer and as a biomarker protein. In addition, we provide a comprehensive transcriptome analysis of published microarrays (n=2,780) that illustrates the expression profile of LASP1 in normal tissues and its overexpression in a broad range of human cancer entities.
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Affiliation(s)
- Martin F Orth
- Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Würzburg, Grombühlstrasse, Würzburg, Germany
| | - Alex Cazes
- Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Würzburg, Grombühlstrasse, Würzburg, Germany
| | - Elke Butt
- Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Würzburg, Grombühlstrasse, Würzburg, Germany
| | - Thomas G P Grunewald
- Laboratory for Pediatric Sarcoma Biology, Institute of Pathology of the LMU Munich, Thalkirchner Strasse, Munich, Germany
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9
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Hu JJ, Liu YW, He MY, Jin D, Zhao H, Yu B. Proteomic analysis on effectors involved in BMP-2-induced osteogenic differentiation of beagle bone marrow mesenchymal stem cells. Proteome Sci 2014; 12:13. [PMID: 24580839 PMCID: PMC3974028 DOI: 10.1186/1477-5956-12-13] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 02/17/2014] [Indexed: 12/27/2022] Open
Abstract
Objective To identify the protein regulation profile of recombinant human bone morphogenetic protein-2 (rhBMP-2)-induced osteogenic differentiation in beagle bone marrow stem cells (BMSCs). Methods Beagle BMSCs were isolated and cultured with or without rhBMP-2. Two-dimensional gel electrophoresis was used to determine the differences in protein expression in rhBMP-2-induced and non-induced BMSCs. Real-time PCR and western blotting analyses were used to verify the expression patterns of selected proteins. Results After the induction, the osteogenic differentiation of beagle BMSCs was activated successfully. Nine and 11 proteins were found to be down- and up-regulated by rhBMP-2, respectively. The increase in Lim and SH3 domain protein 1(LASP1) and the decrease in ferritin were verified by real-time PCR and western blotting analyses. Conclusions Among the 20 rhBMP-2-regulated factors, there is empirical evidence supporting the involvement of LASP1 and ferritin in osteogenic differentiation. LASP1 plays an important role in the regulation of the activity of the cytoskeleton, and ferritin is an important molecule in cellular iron homeostasis. Further studies focused on these 20 proteins will help elucidate the molecular mechanism(s) through which rhBMP-2 induces osteogenic differentiation of BMSCs.
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Affiliation(s)
- Ji-Jie Hu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Ya-Wei Liu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Min-Yi He
- Department of Organ Transplantation, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, China
| | - Dan Jin
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Hui Zhao
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Bin Yu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
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10
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Ngan E, Northey JJ, Brown CM, Ursini-Siegel J, Siegel PM. A complex containing LPP and α-actinin mediates TGFβ-induced migration and invasion of ErbB2-expressing breast cancer cells. J Cell Sci 2013; 126:1981-91. [PMID: 23447672 DOI: 10.1242/jcs.118315] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Transforming growth factor β (TGFβ) is a potent modifier of the malignant phenotype in ErbB2-expressing breast cancers. We demonstrate that epithelial-derived breast cancer cells, which undergo a TGFβ-induced epithelial-to-mesenchymal transition (EMT), engage signaling molecules that normally facilitate cellular migration and invasion of mesenchymal cells. We identify lipoma preferred partner (LPP) as an indispensable regulator of TGFβ-induced migration and invasion of ErbB2-expressing breast cancer cells. We show that LPP re-localizes to focal adhesion complexes upon TGFβ stimulation and is a critical determinant in TGFβ-mediated focal adhesion turnover. Finally, we have determined that the interaction between LPP and α-actinin, an actin cross-linking protein, is necessary for TGFβ-induced migration and invasion of ErbB2-expressing breast cancer cells. Thus, our data reveal that LPP, which is normally operative in cells of mesenchymal origin, can be co-opted by breast cancer cells during an EMT to promote their migration and invasion.
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Affiliation(s)
- Elaine Ngan
- Goodman Cancer Research Centre, McGill University, Montréal, QC H3A 1A3, Canada
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11
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Bliss KT, Chu M, Jones-Weinert CM, Gregorio CC. Investigating lasp-2 in cell adhesion: new binding partners and roles in motility. Mol Biol Cell 2013; 24:995-1006. [PMID: 23389630 PMCID: PMC3608507 DOI: 10.1091/mbc.e12-10-0723] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Focal adhesions are intricate protein complexes that facilitate cell attachment, migration, and cellular communication. Lasp-2 (LIM-nebulette), a member of the nebulin family of actin-binding proteins, is a newly identified component of these complexes. To gain further insights into the functional role of lasp-2, we identified two additional binding partners of lasp-2: the integral focal adhesion proteins vinculin and paxillin. Of interest, the interaction of lasp-2 with its binding partners vinculin and paxillin is significantly reduced in the presence of lasp-1, another nebulin family member. The presence of lasp-2 appears to enhance the interaction of vinculin and paxillin with each other; however, as with the interaction of lasp-2 with vinculin or paxillin, this effect is greatly diminished in the presence of excess lasp-1. This suggests that the interplay between lasp-2 and lasp-1 could be an adhesion regulatory mechanism. Lasp-2's potential role in metastasis is revealed, as overexpression of lasp-2 in either SW620 or PC-3B1 cells-metastatic cancer cell lines-increases cell migration but impedes cell invasion, suggesting that the enhanced interaction of vinculin and paxillin may functionally destabilize focal adhesion composition. Taken together, these data suggest that lasp-2 has an important role in coordinating and regulating the composition and dynamics of focal adhesions.
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Affiliation(s)
- Katherine T Bliss
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85724, USA
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12
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Nuclear import of LASP-1 is regulated by phosphorylation and dynamic protein-protein interactions. Oncogene 2012; 32:2107-13. [PMID: 22665060 DOI: 10.1038/onc.2012.216] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
LASP-1 is a multidomain protein predominantly localized at focal contacts, where it regulates cytoskeleton dynamics and cell migration. However, in different tumor entities, a nuclear LASP-1 accumulation is observed, thought to have an important role in cancer progression. Until now, the molecular mechanisms that control LASP-1 nuclear import were not elucidated. Here, we identified a novel LASP-1-binding partner, zona occludens protein 2 (ZO-2), and established its role in the signal transduction pathway of LASP-1 nucleo-cytoplasmatic shuttling. Phosphorylation of LASP-1 by PKA at serine 146 induces translocation of the LASP-1/ZO-2 complex from the cytoplasm to the nucleus. Interaction occurs within the carboxyterminal proline-rich motif of ZO-2 and the SH3 domain in LASP-1. In situ proximity ligation assay confirmed the direct binding between LASP-1 and ZO-2 and visualized the shuttling. Nuclear export is mediated by Crm-1 and a newly identified nuclear export signal in LASP-1. Finally, dephosphorylation of LASP-1 by phosphatase PP2B is suggested to relocalize the protein back to focal contacts. In summary, we define a new pathway for LASP-1 in tumor progression.
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The diversification of the LIM superclass at the base of the metazoa increased subcellular complexity and promoted multicellular specialization. PLoS One 2012; 7:e33261. [PMID: 22438907 PMCID: PMC3305314 DOI: 10.1371/journal.pone.0033261] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 02/07/2012] [Indexed: 01/15/2023] Open
Abstract
Background Throughout evolution, the LIM domain has been deployed in many different domain configurations, which has led to the formation of a large and distinct group of proteins. LIM proteins are involved in relaying stimuli received at the cell surface to the nucleus in order to regulate cell structure, motility, and division. Despite their fundamental roles in cellular processes and human disease, little is known about the evolution of the LIM superclass. Results We have identified and characterized all known LIM domain-containing proteins in six metazoans and three non-metazoans. In addition, we performed a phylogenetic analysis on all LIM domains and, in the process, have identified a number of novel non-LIM domains and motifs in each of these proteins. Based on these results, we have formalized a classification system for LIM proteins, provided reasonable timing for class and family origin events; and identified lineage-specific loss events. Our analysis is the first detailed description of the full set of LIM proteins from the non-bilaterian species examined in this study. Conclusion Six of the 14 LIM classes originated in the stem lineage of the Metazoa. The expansion of the LIM superclass at the base of the Metazoa undoubtedly contributed to the increase in subcellular complexity required for the transition from a unicellular to multicellular lifestyle and, as such, was a critically important event in the history of animal multicellularity.
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He W, Liu W, Chew CS, Baker SS, Baker RD, Forte JG, Zhu L. Acid secretion-associated translocation of KCNJ15 in gastric parietal cells. Am J Physiol Gastrointest Liver Physiol 2011; 301:G591-600. [PMID: 21719736 PMCID: PMC3191558 DOI: 10.1152/ajpgi.00460.2010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Potassium ions are required for gastric acid secretion. Several potassium channels have been implicated in providing K(+) at the apical membrane of parietal cells. In examining the mRNA expression levels between gastric mucosa and liver tissue, KCNJ15 stood out as the most highly specific K(+) channel in the gastric mucosa. Western blot analysis confirmed that KCNJ15 is abundant in the stomach. Immunofluorescence staining of isolated gastric glands indicated that KCNJ15 was expressed in parietal cells and chief cells, but not in mucous neck cells. In resting parietal cells, KCNJ15 was mainly found in puncta throughout the cytoplasm but was distinct from H(+)-K(+)-ATPase. Upon stimulation, KCNJ15 and H(+)-K(+)-ATPase become colocalized on the apical membranes, as suggested by immunofluorescence staining. Western blot analysis of the resting and the stimulated membrane fractions confirmed this observation. From nonsecreting preparations, KCNJ15-containing vesicles sedimented after a 4-h centrifugation at 100,000 g, but not after a 30-min spin, which did sediment most of the H(+)-K(+)-ATPase-containing tubulovesicles. Most of the KCNJ15 containing small vesicle population was depleted upon stimulation of parietal cells, as indicated by the fact that the KCNJ15 signal was shifted to a large membrane fraction that sedimented at 4,000 g. Our results demonstrate that, in nonsecreting parietal cells, KCNJ15 is stored in vesicles distinct from the H(+)-K(+)-ATPase-enriched tubulovesicles. Furthermore, upon stimulation, KCNJ15 and H(+)-K(+)-ATPase both translocate to the apical membrane for active acid secretion. Thus KCNJ15 can be added to the family of apical K(+) channels in gastric parietal cells.
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Affiliation(s)
- Wenjun He
- 1Digestive Diseases and Nutrition Center, Department of Pediatrics, State University of New York at Buffalo, Buffalo, New York;
| | - Wensheng Liu
- 1Digestive Diseases and Nutrition Center, Department of Pediatrics, State University of New York at Buffalo, Buffalo, New York;
| | - Catherine S. Chew
- 2Institute of Molecular Medicine and Genetics, Medical College of Georgia, Augusta, Georgia; and
| | - Susan S. Baker
- 1Digestive Diseases and Nutrition Center, Department of Pediatrics, State University of New York at Buffalo, Buffalo, New York;
| | - Robert D. Baker
- 1Digestive Diseases and Nutrition Center, Department of Pediatrics, State University of New York at Buffalo, Buffalo, New York;
| | - John G. Forte
- 3Department of Molecular and Cell Biology, University of California, Berkeley, California
| | - Lixin Zhu
- 1Digestive Diseases and Nutrition Center, Department of Pediatrics, State University of New York at Buffalo, Buffalo, New York;
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Pappas CT, Bliss KT, Zieseniss A, Gregorio CC. The Nebulin family: an actin support group. Trends Cell Biol 2010; 21:29-37. [PMID: 20951588 DOI: 10.1016/j.tcb.2010.09.005] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 09/08/2010] [Accepted: 09/09/2010] [Indexed: 11/25/2022]
Abstract
Nebulin, a giant, actin-binding protein, is the largest member of a family of proteins (including N-RAP, nebulette, lasp-1 and lasp-2) that are assembled in a variety of cytoskeletal structures, and expressed in different tissues. For decades, nebulin has been thought to act as a molecular ruler, specifying the precise length of actin filaments in skeletal muscle. However, emerging evidence suggests that nebulin should not be viewed as a ruler but as an actin filament stabilizer required for length maintenance. Nebulin has also been implicated recently in an array of regulatory functions independent of its role in actin filament length regulation. In this review, we discuss the current evolutionary, biochemical, and functional data for the nebulin family of proteins - a family whose members, both large and small, function as cytoskeletal scaffolds and stabilizers.
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Affiliation(s)
- Christopher T Pappas
- Department of Cell Biology, and Molecular Cardiovascular Research Program, The University of Arizona, Tucson, AZ, USA
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Zhang Y, Tong X. Expression of the actin-binding proteins indicates that cofilin and fascin are related to breast tumour size. J Int Med Res 2010; 38:1042-8. [PMID: 20819441 DOI: 10.1177/147323001003800331] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study was designed to investigate the expression of four actin-binding proteins, alpha-actinin-4, cofilin 1, fascin and elongation factor 1-alpha 2 (eEF1A2), in samples of breast cancer from 112 patients with different stages of breast cancer (stages T0 - T1, T2 and T3) compared with normal control tissues (n = 33). Levels of eEF1A2 and alpha-actinin-4 mRNA appeared to be unrelated to tumour size, except for a significant down-regulation of alpha-actinin-4 mRNA in T3 cases. Significant up-regulation of cofilin 1 mRNA was associated with stages T0 - T1 and T2; up-regulation seen at stage T3 was not significant compared with control tissue. Fascin mRNA levels were significantly reduced at all three tumour stages (T0 - T1, T2 and T3) compared with control tissue. In conclusion, some components of the actin cytoskeletal system might hold significant potential as targets in future cancer therapies.
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Affiliation(s)
- Y Zhang
- Department of Obstetrics and Gynaecology, Tongji Hospital of Tongji University, Shanghai, China
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Raman D, Sai J, Neel NF, Chew CS, Richmond A. LIM and SH3 protein-1 modulates CXCR2-mediated cell migration. PLoS One 2010; 5:e10050. [PMID: 20419088 PMCID: PMC2856662 DOI: 10.1371/journal.pone.0010050] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Accepted: 03/16/2010] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND The chemokine receptor CXCR2 plays a pivotal role in migration of neutrophils, macrophages and endothelial cells, modulating several biological responses such as angiogenesis, wound healing and acute inflammation. CXCR2 is also involved in pathogenesis of chronic inflammation, sepsis and atherosclerosis. The ability of CXCR2 to associate with a variety of proteins dynamically is responsible for its effects on directed cell migration or chemotaxis. The dynamic network of such CXCR2 binding proteins is termed as "CXCR2 chemosynapse". Proteomic analysis of proteins that co-immunoprecipitated with CXCR2 in neutrophil-like dHL-60 cells revealed a novel protein, LIM and SH3 protein 1 (LASP-1), binds CXCR2 under both basal and ligand activated conditions. LASP-1 is an actin binding cytoskeletal protein, involved in the cell migration. METHODOLOGY/PRINCIPAL FINDINGS We demonstrate that CXCR2 and LASP-1 co-immunoprecipitate and co-localize at the leading edge of migrating cells. The LIM domain of LASP-1 directly binds to the carboxy-terminal domain (CTD) of CXCR2. Moreover, LASP-1 also directly binds the CTD of CXCR1, CXCR3 and CXCR4. Using a site-directed and deletion mutagenesis approach, Iso323-Leu324 of the conserved LKIL motif on CXCR2-CTD was identified as the binding site for LASP-1. Interruption of the interaction between CXCR2-CTD and LIM domain of LASP-1 by dominant negative and knock down approaches inhibited CXCR2-mediated chemotaxis. Analysis for the mechanism for inhibition of CXCR2-mediated chemotaxis indicated that LASP-1/CXCR2 interaction is essential for cell motility and focal adhesion turnover involving activation of Src, paxillin, PAK1, p130CAS and ERK1/2. CONCLUSIONS/SIGNIFICANCE We demonstrate here for the first time that LASP-1 is a key component of the "CXCR2 chemosynapse" and LASP-1 interaction with CXCR2 is critical for CXCR2-mediated chemotaxis. Furthermore, LASP-1 also directly binds the CTD of CXCR1, CXCR3 and CXCR4, suggesting that LASP-1 is a general mediator of CXC chemokine mediated chemotaxis. Thus, LASP-1 may serve as a new link coordinating the flow of information between chemokine receptors and nascent focal adhesions, especially at the leading edge. Thus the association between the chemokine receptors and LASP-1 suggests to the presence of a CXC chemokine receptor-LASP-1 pro-migratory module in cells governing the cell migration.
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Affiliation(s)
- Dayanidhi Raman
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Jiqing Sai
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Nicole F. Neel
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Catherine S. Chew
- Institute of Molecular Medicine and Genetics, Medical College of Georgia, Augusta, Georgia, United States of America
| | - Ann Richmond
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Department of Veterans Affairs, Nashville, Tennessee, United States of America
- * E-mail:
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Abstract
The parietal cell is responsible for secreting concentrated hydrochloric acid into the gastric lumen. To fulfill this task, it is equipped with a broad variety of functionally coupled apical and basolateral ion transport proteins. The concerted scientific effort over the last years by a variety of researchers has provided us with the molecular identity of many of these transport mechanisms, thereby contributing to the clarification of persistent controversies in the field. This article will briefly review the current model of parietal cell physiology and ion transport in particular and will update the existing models of apical and basolateral transport in the parietal cell.
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Affiliation(s)
- Sascha Kopic
- Department of Surgery, Yale University, School of Medicine, New Haven, Connecticut
| | - Michael Murek
- Department of Surgery, Yale University, School of Medicine, New Haven, Connecticut
| | - John P. Geibel
- Department of Surgery, Yale University, School of Medicine, New Haven, Connecticut
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