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Niimi A, Limsirichaikul S, Kano K, Mizutani Y, Takeuchi T, Sawangsri P, Tran DQ, Kawamoto Y, Suzuki M. LASP1, CERS6, and Actin Form a Ternary Complex That Promotes Cancer Cell Migration. Cancers (Basel) 2023; 15:2781. [PMID: 37345118 DOI: 10.3390/cancers15102781] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/11/2023] [Accepted: 05/11/2023] [Indexed: 06/23/2023] Open
Abstract
CERS6 is associated with metastasis and poor prognosis in non-small cell lung cancer (NSCLC) patients through d18:1/C16:0 ceramide (C16 ceramide)-mediated cell migration, though the detailed mechanism has not been elucidated. In the present study, examinations including co-immunoprecipitation, liquid chromatography, and tandem mass spectrometry analysis were performed to identify a novel binding partner of CERS6. Among the examined candidates, LASP1 was a top-ranked binding partner, with the LIM domain possibly required for direct interaction. In accord with those findings, CERS6 and LASP1 were found to co-localize on lamellipodia in several lung cancer cell lines. Furthermore, silencing of CERS6 and/or LASP1 significantly suppressed cell migration and lamellipodia formation, whereas ectopic addition of C16 ceramide partially rescued those phenotypes. Both LASP1 and CERS6 showed co-immunoprecipitation with actin, with those interactions markedly reduced when the LASP1-CERS6 complex was abolished. Based on these findings, it is proposed that LASP1-CERS6 interaction promotes cancer cell migration.
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Affiliation(s)
- Atsuko Niimi
- Department of Molecular Oncology, Fujita Health University, Toyoake 470-1192, Japan
| | - Siripan Limsirichaikul
- Department of Molecular Oncology, Fujita Health University, Toyoake 470-1192, Japan
- Department of Biopharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Keiko Kano
- Institute of Transformative Bio-Molecules (WPI-ItbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Yasuyoshi Mizutani
- Department of Molecular Oncology, Fujita Health University, Toyoake 470-1192, Japan
| | - Toshiyuki Takeuchi
- Department of Molecular Oncology, Fujita Health University, Toyoake 470-1192, Japan
| | - Patinya Sawangsri
- Department of Molecular Oncology, Fujita Health University, Toyoake 470-1192, Japan
| | - Dat Quoc Tran
- Department of Molecular Oncology, Fujita Health University, Toyoake 470-1192, Japan
| | - Yoshiyuki Kawamoto
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai 487-8501, Japan
| | - Motoshi Suzuki
- Department of Molecular Oncology, Fujita Health University, Toyoake 470-1192, Japan
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Guo H, Zhao J, Li X, Sun F, Qin Y, Yang X, Xiong X, Yin Q, Wang X, Gao L, Jiao M, Hu J, Han B. Identification of miR-1-3p, miR-143-3p and miR-145-5p association with bone metastasis of Gleason 3+4 prostate cancer and involvement of LASP1 regulation. Mol Cell Probes 2023; 68:101901. [PMID: 36791996 DOI: 10.1016/j.mcp.2023.101901] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 02/11/2023] [Accepted: 02/12/2023] [Indexed: 02/17/2023]
Abstract
Gleason Score (GS) 3 + 4 prostate cancer (PCa) is heterogeneous in clinical course and molecular features. Risk stratification of indolent and aggressive PCa with GS 3 + 4 is critical, especially those with bone metastasis (BM) potential. Microarray-based microRNA(miRNA) profiling with eight PCa cases with or without BM was used to screen the candidate miRNAs associated with BM. Transwell and MTS assays were used to characterize the function of miRNAs and target gene LASP1. RT-qPCR and immunohistochemistry assays were utilized to illustrate the clinical significance of miRNAs and target gene in a cohort of 309 Chinese PCa cases. In the current study, we identified that miR-1-3p, miR-143-3p and miR-145-5p are associated with BM of GS 3 + 4 PCa. Through functional experiments, we show that miR-1-3p/143-3p/145-5p promotes proliferation and migration of PCa in vitro. LASP1 was predicted as the common target of these three miRNAs which was further confirmed by a luciferase assay. Overexpression of LASP1 was correlated with higher GS, higher pathological stage, and the presence of metastasis by immunohistochemistry. siRNA knockdown of LASP1 significantly suppressed proliferation and migration, whereas overexpression of LASP1 promoted it. Bioinformatics analysis revealed the involvement of Wnt signaling pathway in LASP1 mediated function. LASP1 may activate Wnt signaling by interacting with β-catenin. In all, we suggest that miR-1-3p/143-3p/145-5p are associated with BM of Gleason 3 + 4 PCa. LASP1 is the common target of these miRNAs and may active Wnt signaling by interacting with β-catenin.
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Affiliation(s)
- Hongwei Guo
- The Key Laboratory of Experimental Teratology, Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, 250012, China; Department of Pathology, Linyi People's Hospital, Linyi, 276000, China
| | - Jinlong Zhao
- Department of Thoracic Surgery, Linyi People's Hospital, Linyi, 276000, China
| | - Xinjun Li
- Department of Pathology, Binzhou People's Hospital, Binzhou, 256610, China
| | - Feifei Sun
- The Key Laboratory of Experimental Teratology, Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, 250012, China
| | - Yiming Qin
- College of Chemical Engineering and Materials Science, Shandong Normal University, 250014, Jinan, China
| | - Xiaorong Yang
- Clinical Epidemiology Unit, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Xueting Xiong
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Qianshuo Yin
- School of Basic Medical Sciences, Shandong University, Jinan, 250012, China
| | - Xueli Wang
- Department of Pathology, Binzhou City Central Hospital, Binzhou, 256603, China
| | - Lin Gao
- The Key Laboratory of Experimental Teratology, Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, 250012, China
| | - Meng Jiao
- Department of Pathology, The Second Hospital of Shandong University, Jinan, 250033, China
| | - Jing Hu
- Department of Pathology, Qilu Hospital of Shandong University, Jinan, 250012, China.
| | - Bo Han
- The Key Laboratory of Experimental Teratology, Ministry of Education and Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, 250012, China; Department of Pathology, Qilu Hospital of Shandong University, Jinan, 250012, China.
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3
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Butt E, Howard CM, Raman D. LASP1 in Cellular Signaling and Gene Expression: More than Just a Cytoskeletal Regulator. Cells 2022; 11:cells11233817. [PMID: 36497077 PMCID: PMC9741313 DOI: 10.3390/cells11233817] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/24/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022] Open
Abstract
LIM and SH3 protein 1 was originally identified as a structural cytoskeletal protein with scaffolding function. However, recent data suggest additional roles in cell signaling and gene expression, especially in tumor cells. These novel functions are primarily regulated by the site-specific phosphorylation of LASP1. This review will focus on specific phosphorylation-dependent interaction between LASP1 and cellular proteins that orchestrate primary tumor progression and metastasis. More specifically, we will describe the role of LASP1 in chemokine receptor, and PI3K/AKT signaling. We outline the nuclear role for LASP1 in terms of epigenetics and transcriptional regulation and modulation of oncogenic mRNA translation. Finally, newly identified roles for the cytoskeletal function of LASP1 next to its known canonical F-actin binding properties are included.
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Affiliation(s)
- Elke Butt
- Institute of Experimental Biochemistry II, University Clinic Wuerzburg, 97080 Wuerzburg, Germany
- Correspondence: (E.B.); (D.R.); Tel.: +49-(0)931-201-48333 (E.B.); +1-419-383-4616 (D.R.)
| | - Cory M. Howard
- Department of Cell and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, MS 1010, Toledo, OH 43614, USA
| | - Dayanidhi Raman
- Department of Cell and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, MS 1010, Toledo, OH 43614, USA
- Correspondence: (E.B.); (D.R.); Tel.: +49-(0)931-201-48333 (E.B.); +1-419-383-4616 (D.R.)
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The CXCR4-Dependent LASP1-Ago2 Interaction in Triple-Negative Breast Cancer. Cancers (Basel) 2020; 12:cancers12092455. [PMID: 32872485 PMCID: PMC7564666 DOI: 10.3390/cancers12092455] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/20/2020] [Accepted: 08/26/2020] [Indexed: 12/28/2022] Open
Abstract
The CXCR4-LASP1 axis is an emerging target in the field of breast cancer metastasis. C-X-C chemokine receptor type 4 (CXCR4) mediates directed cell migration when activated by its cognate ligand CXCL12. LIM and SH3 Protein 1 (LASP1) is a critical node in the CXCR4 signaling pathway, as its deficiency blocks CXCR4-dependent Matrigel invasion. The mechanism by which LASP1 facilitates this invasive ability of tumor cells when CXCR4 is activated is unknown. Our previous proteomics work had revealed several components of the RNA interference (RNAi) machinery as being potential LASP1 interacting proteins. Here we report that argonaute 2 (Ago2), a protein with central involvement in RNAi, associates with LASP1 in triple-negative breast cancer (TNBC) cells. We demonstrate that LASP1 co-immunoprecipitates with Ago2 endogenously in a CXCL12-dependent manner, with further confirmation of this interaction by proximity ligation assay. Furthermore, this association is specific to CXCR4 as it can be abrogated by the CXCR4 antagonist, AMD3465. By GST-pulldown approach, we identify that LASP1 directly binds to Ago2 through its LIM and SH3 domains, and that this binding is dictated by the S146 and Y171 phosphorylation sites of LASP1. Additionally, the phosphorylation status of LASP1 affected tumor suppressor microRNA (miRNA) Let-7a-guided Ago2 activity. Levels of several endogenous targets of Let-7a were found to be altered including C-C chemokine receptor type 7 (CCR7), which is another critical chemokine receptor involved in metastasis to lymph nodes. Our results suggest a novel role for the LASP1-Ago2 module in shaping the RNAi landscape, functionally impacting the invasive ability of cancer cells.
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Role of the CXCR4-LASP1 Axis in the Stabilization of Snail1 in Triple-Negative Breast Cancer. Cancers (Basel) 2020; 12:cancers12092372. [PMID: 32825729 PMCID: PMC7563118 DOI: 10.3390/cancers12092372] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/08/2020] [Accepted: 08/14/2020] [Indexed: 12/13/2022] Open
Abstract
The CXCL12-CXCR4 axis plays a vital role in many steps of breast cancer metastasis, but the molecular mechanisms have not been fully elucidated. We previously reported that activation of CXCR4 by CXCL12 promotes the nuclear localization of LASP1 (LIM and SH3 protein 1). The nuclear LASP1 then interacts with Snail1 in triple-negative breast cancer (TNBC) cell lines. In this study, we report that the nuclear accumulation and retention of Snail1 was dependent on an increase in nuclear LASP1 levels driven by active CXCR4. The CXCR4-LASP1 axis may directly regulate the stabilization of nuclear Snail1, by upregulating nuclear levels of pS473-Akt, pS9-GSK-3β, A20, and LSD1. Furthermore, the activation of CXCR4 induced association of LASP1 with Snail1, A20, GSK-3β, and LSD1 endogenously. Thus, nuclear LASP1 may also regulate protein-protein interactions that facilitate the stability of Snail1. Genetic ablation of LASP1 resulted in the mislocalization of nuclear Snail1, loss of the ability of TNBC cells to invade Matrigel and a dysregulated expression of both epithelial and mesenchymal markers, including an increased expression of ALDH1A1, a marker for epithelial breast cancer stem-like cells. Our findings reveal a novel role for the CXCR4-LASP1 axis in facilitating the stability of nuclear localized Snail1.
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Ye T, Feng J, Wan X, Xie D, Liu J. Double Agent: SPDEF Gene with Both Oncogenic and Tumor-Suppressor Functions in Breast Cancer. Cancer Manag Res 2020; 12:3891-3902. [PMID: 32547225 PMCID: PMC7259446 DOI: 10.2147/cmar.s243748] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 04/25/2020] [Indexed: 12/16/2022] Open
Abstract
The dichotomy of cancer-regulatory genes into “oncogenes (OCGs)” and “tumor-suppressor genes (TSGs)” has greatly helped us in learning molecular details of tumor biology. SPDEF, known as the prostate-derived ETS factor, is reported to play a pivotal role in normal cell development and survival, which has also been endowed with dual characteristics in cancers. Breast cancer (BC) is a highly heterogeneous disease which becomes the leading reason for cancer-related fatality among women worldwide. The involvement of SPDEF in many aspects of BC has been postulated, whereas the mechanism governing the regulation of the pro- and anti-oncogenic activities of SPDEF in BC state remains poorly defined. In this review, we summarized SPDEF as the double agent involving in expression profiles, the regulatory mechanism in BC progression, as well as the role in diagnosis, treatment and prognosis of BC. The understanding of SPDEF duality has contributed to gain insight into the tumor biology and also add a new dimension to the new therapy targets for BC.
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Affiliation(s)
- Ting Ye
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Jia Feng
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Xue Wan
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Dan Xie
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
| | - Jinbo Liu
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Sichuan 646000, People's Republic of China
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Lepa C, Möller-Kerutt A, Stölting M, Picciotto C, Eddy ML, Butt E, Kerjaschki D, Korb-Pap A, Vollenbröker B, Weide T, George B, Kremerskothen J, Pavenstädt H. LIM and SH3 protein 1 (LASP-1): A novel link between the slit membrane and actin cytoskeleton dynamics in podocytes. FASEB J 2020; 34:5453-5464. [PMID: 32086849 DOI: 10.1096/fj.201901443r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 01/27/2020] [Accepted: 02/11/2020] [Indexed: 02/03/2023]
Abstract
The foot processes of podocytes exhibit a dynamic actin cytoskeleton, which maintains their complex cell structure and antagonizes the elastic forces of the glomerular capillary. Interdigitating secondary foot processes form a highly selective filter for proteins in the kidney, the slit membrane. Knockdown of slit membrane components such as Nephrin or Neph1 and cytoskeletal adaptor proteins such as CD2AP in mice leads to breakdown of the filtration barrier with foot process effacement, proteinuria, and early death of the mice. Less is known about the crosstalk between the slit membrane-associated proteins and cytoskeletal components inside the podocyte foot processes. Our study shows that LASP-1, an actin-binding protein, is highly expressed in podocytes. Electron microscopy studies demonstrate that LASP-1 is found at the slit membrane suggesting a role in anchoring slit membrane components to the actin cytoskeleton. Live cell imaging experiments with transfected podocytes reveal that LASP-1 is either part of a highly dynamic granular complex or a static, actin cytoskeleton-bound protein. We identify CD2AP as a novel LASP-1 binding partner that regulates its association with the actin cytoskeleton. Activation of the renin-angiotensin-aldosterone system, which is crucial for podocyte function, leads to phosphorylation and altered localization of LASP-1. In vivo studies using the Drosophila nephrocyte model indicate that Lasp is necessary for the slit membrane integrity and functional filtration.
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Affiliation(s)
- Carolin Lepa
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Annika Möller-Kerutt
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Miriam Stölting
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Cara Picciotto
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Mee-Ling Eddy
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Elke Butt
- Institutfür Experimentelle Biomedizin II, Klinikum der Julius-Maximilians-Universität Würzburg, Würzburg, Germany
| | - Dontscho Kerjaschki
- Klinisches Institut für Pathologie, Medizinische Universität Wien, Wien, Austria
| | - Adelheid Korb-Pap
- Institut für Experimentelle Muskuloskelettale Medizin, Universitätsklinikum Münster, Münster, Germany
| | - Beate Vollenbröker
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Thomas Weide
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Britta George
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Joachim Kremerskothen
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
| | - Hermann Pavenstädt
- Medizinische Klinik und Poliklinik D, Universitätsklinikum Münster, Münster, Germany
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Herrmann AB, Müller ML, Orth MF, Müller JP, Zernecke A, Hochhaus A, Ernst T, Butt E, Frietsch JJ. Knockout of LASP1 in CXCR4 expressing CML cells promotes cell persistence, proliferation and TKI resistance. J Cell Mol Med 2020; 24:2942-2955. [PMID: 31957290 PMCID: PMC7077607 DOI: 10.1111/jcmm.14910] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 11/30/2019] [Indexed: 12/11/2022] Open
Abstract
Chronic myeloid leukaemia (CML) is a clonal myeloproliferative stem cell disorder characterized by the constitutively active BCR-ABL tyrosine kinase. The LIM and SH3 domain protein 1 (LASP1) has recently been identified as a novel BCR-ABL substrate and is associated with proliferation, migration, tumorigenesis and chemoresistance in several cancers. Furthermore, LASP1 was shown to bind to the chemokine receptor 4 (CXCR4), thought to be involved in mechanisms of relapse. In order to identify potential LASP1-mediated pathways and related factors that may help to further eradicate minimal residual disease (MRD), the effect of LASP1 on processes involved in progression and maintenance of CML was investigated. The present data indicate that not only overexpression of CXCR4, but also knockout of LASP1 contributes to proliferation, reduced apoptosis and migration as well as increased adhesive potential of K562 CML cells. Furthermore, LASP1 depletion in K562 CML cells leads to decreased cytokine release and reduced NK cell-mediated cytotoxicity towards CML cells. Taken together, these results indicate that in CML, reduced levels of LASP1 alone and in combination with high CXCR4 expression may contribute to TKI resistance.
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Affiliation(s)
- Andreas B Herrmann
- Institut für Experimentelle Biomedizin II, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Martha-Lena Müller
- Rudolf-Virchow-Zentrum für Experimentelle Biomedizin I, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Martin F Orth
- Labor für Pädiatrische Sarkombiologie, Medizinische Fakultät, Pathologisches Institut, LMU München, München, Germany
| | - Jörg P Müller
- Center for Molecular Biomedicine, Institut für Molekulare Zellbiologie, Universitätsklinikum Jena, Jena, Germany
| | - Alma Zernecke
- Institut für Experimentelle Biomedizin II, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Andreas Hochhaus
- Abteilung für Hämatologie und internistische Onkologie, Klinik für Innere Medizin II, Universitätsklinikum Jena, Jena, Germany
| | - Thomas Ernst
- Abteilung für Hämatologie und internistische Onkologie, Klinik für Innere Medizin II, Universitätsklinikum Jena, Jena, Germany
| | - Elke Butt
- Institut für Experimentelle Biomedizin II, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Jochen J Frietsch
- Abteilung für Hämatologie und internistische Onkologie, Klinik für Innere Medizin II, Universitätsklinikum Jena, Jena, Germany
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Chen Q, Wu K, Qin X, Yu Y, Wang X, Wei K. LASP1 promotes proliferation, metastasis, invasion in head and neck squamous cell carcinoma and through direct interaction with HSPA1A. J Cell Mol Med 2019; 24:1626-1639. [PMID: 31793711 PMCID: PMC6991697 DOI: 10.1111/jcmm.14854] [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: 12/17/2018] [Revised: 10/30/2019] [Accepted: 11/08/2019] [Indexed: 01/02/2023] Open
Abstract
LIM and SH3 protein 1 (LASP1) is a specific focal adhesion protein that promotes metastasis in a variety of tumours. However, its role in head and neck squamous cell carcinoma (HNSCC) has not been fully validated. The purpose of this study was to analyse the interaction of LASP1 and its binding partner in HNSCC. The expression of LASP1 and HSPA1A in HNSCC was analysed by real-time PCR and Western blot. The effects of LASP1 on the biology behaviour of HNSCC cell lines were observed in vivo and in vitro. Co-immunoprecipitation analysis was performed to confirm the interaction between LASP1 and HSPA1A. LASP1 was highly expressed in HNSCC and associated with poor prognosis for patients. LASP1 also promoted cell proliferation, colony formation, invasion and cell cycle G2/M phase transition. Heat shock protein family A member 1A (HSPA1A) is identified as a chaperone protein of LASP1 and co-localized in the cytoplasm. HSPA1A positively regulates the interaction of LASP1 with P-AKT and enhances the malignant behaviour of HNSCC cells. LASP1 and HSPA1A are both up-regulated in HNSCC, and directly binds to each other. Double inhibition of LASP1 and HSPA1A expression may be an effective method for the treatment of HNSCC.
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Affiliation(s)
- Qi Chen
- Department of Stomatology Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Kun Wu
- Department of Oral and Maxillofacial-Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xing Qin
- Department of Oral and Maxillofacial-Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Youcheng Yu
- Department of Stomatology of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xu Wang
- Department of Oral and Maxillofacial-Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kuijie Wei
- Department of Stomatology Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai, China
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Nicholson L, Lindsay L, Murphy CR. Change in distribution of cytoskeleton-associated proteins, lasp-1 and palladin, during uterine receptivity in the rat endometrium. Reprod Fertil Dev 2019; 30:1482-1490. [PMID: 29739492 DOI: 10.1071/rd17530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 04/16/2018] [Indexed: 11/23/2022] Open
Abstract
The epithelium of the uterine lumen is the first point of contact with the blastocyst before implantation. To facilitate pregnancy, these uterine epithelial cells (UECs) undergo morphological changes specific to the receptive uterus. These changes include basal, lateral and apical alterations in the plasma membrane of UECs. This study looked at the cytoskeletal and focal adhesion-associated proteins, lasp-1 and palladin, in the uterus during early pregnancy in the rat. Two palladin isoforms, 140 kDa and 90 kDa, were analysed, with the migration-associated 140-kDa isoform increasing significantly at the time of implantation when compared with the time of fertilisation. Lasp-1 was similarly increased at this time, whilst also being located predominantly apically and laterally in the UECs, suggesting a role in the initial contact between the UECs and the blastocyst. This is the first study to investigate palladin and lasp-1 in the uterine luminal epithelium and suggests an importance for these cytoskeletal proteins in the morphological changes the UECs undergo for pregnancy to occur.
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Affiliation(s)
- Leigh Nicholson
- Cell and Reproductive Biology Laboratory, Discipline of Anatomy and Histology, School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia
| | - Laura Lindsay
- Cell and Reproductive Biology Laboratory, Discipline of Anatomy and Histology, School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia
| | - Christopher R Murphy
- Cell and Reproductive Biology Laboratory, Discipline of Anatomy and Histology, School of Medical Sciences, University of Sydney, Camperdown, NSW 2050, Australia
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Chen K, Quan J, Yang J, Chen Z. The potential markers of endocrine resistance among HR+ /HER2+ breast cancer patients. Clin Transl Oncol 2019; 22:576-584. [PMID: 31209793 DOI: 10.1007/s12094-019-02163-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/12/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE Breast cancer with positive hormone receptor (HR) and human epidermal growth factor receptor-2 (HER2) is a special subgroup with different clinical features and survival, especially the endocrine therapy resistance. The main purpose of the study is to find the potential markers to predict the survival and endocrine therapy resistance of patients with HR+ /HER2+ breast cancer. METHODS Surveillance, Epidemiology, and End Results (SEER) database was used to collect patients' clinical information and tumor features including age, tumor size, grade, stage and long-term survival; the BioPortal for Cancer Genomics (https://cbioportal.org) was used to download the gene data for specific patient group; cluster analyses of gene expression were conducted through the DAVID Bioinformatics Resources 6.8 software. RESULTS All of the included patients were diagnosed as HR positive breast cancer, but the PR positive rates were more common in HER2- group and also the ER+ /PR+ disease. Patients in HR+ /HER2+ group were more likely to present as stage III-IV and grade III disease. Among HR+ /HER2+ patients, 68.6% received chemotherapy, while only 28.9% in HR+ /HER2- group received chemotherapy (P < 0.0001). The survival of HR+ /HER2+ group was poorer. From TCGA database, series genes which were differed between HR+ /HER2+ and HR+ /HER2- were screened out that related to ERBB2 closely: IKZF3, LASP1, CDK12, MLLT6, and RARA. The first three candidate genes were associated with patients' survival, especially in patients who received hormone therapies. CONCLUSION This study analyzed the clinical characteristics and survival of patients with HR+/HER2+ breast cancer as a special subgroup. ERBB2, IKZF3, LASP1, and CDK12 were the potential markers of the resistance of endocrine therapy, and they will provide new strategies for clinicians.
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Affiliation(s)
- K Chen
- Department of Gastrointestinal and Pancreatic Surgery, Zhejiang Provincial People's Hospital, No. 158 Shangtang Road, Hangzhou, 310000, Zhejiang, People's Republic of China
| | - J Quan
- Department of Oncology, The Second Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, Shaanxi, People's Republic of China
| | - J Yang
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, No. 277 West Yanta Road of Xi'an, Xi'an, 710000, People's Republic of China
| | - Z Chen
- Department of Medical Oncology, Zhejiang Province People's Hospital, No. 158 Shangtang Road, Hangzhou, 310000, Zhejiang, People's Republic of China.
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12
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Liu Y, Gao Y, Li D, He L, IW L, Hao B, Chen X, Cao Y. LASP1 promotes glioma cell proliferation and migration and is negatively regulated by miR-377-3p. Biomed Pharmacother 2018; 108:845-851. [DOI: 10.1016/j.biopha.2018.09.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/11/2018] [Accepted: 09/11/2018] [Indexed: 10/28/2022] Open
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13
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Butt E, Raman D. New Frontiers for the Cytoskeletal Protein LASP1. Front Oncol 2018; 8:391. [PMID: 30298118 PMCID: PMC6160563 DOI: 10.3389/fonc.2018.00391] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 08/30/2018] [Indexed: 02/06/2023] Open
Abstract
In the recent two decades, LIM and SH3 protein 1 (LASP1) has been developed from a simple actin-binding structural protein to a tumor biomarker and subsequently to a complex, nuclear transcriptional regulator. Starting with a brief historical perspective, this review will mainly compare and contrast LASP1 and LASP2 from the angle of the newest data and importantly, examine their role in transcriptional regulation. We will summarize the current knowledge through pictorial models and tables including the roles of different microRNAs in the differential regulation of LASP1 levels and patient outcome rather than specify in detail all tumor entities. Finally, the novel functional roles of LASP1 in secretion of vesicles, expression of matrix metalloproteinases and transcriptional regulation as well as the activation of survival and proliferation pathways in different cancer types are described.
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Affiliation(s)
- Elke Butt
- Institute for Experimental Biomedicine II, University Clinic, Wuerzburg, Germany
| | - Dayanidhi Raman
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, OH, United States
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14
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Wang C, Xu J, Fu H, Zhang Y, Zhang X, Yang D, Zhu Z, Wei Z, Hu Z, Yan R, Cai Q. TRIM32 promotes cell proliferation and invasion by activating β-catenin signalling in gastric cancer. J Cell Mol Med 2018; 22:5020-5028. [PMID: 30079558 PMCID: PMC6156241 DOI: 10.1111/jcmm.13784] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/13/2018] [Accepted: 06/16/2018] [Indexed: 12/18/2022] Open
Abstract
The tripartite motif (TRIM) family comprises more than 70 members involved in the regulation of many cellular pathways. TRIM32 acts as an E3 ubiquitin ligase and has been reported to participate in many human cancers. Here, we aimed to investigate the role of TRIM32 in gastric cancer (GC) and the clinical implications. High expression of TRIM32 was observed in GC tissues and cell lines, and was significantly associated with poor prognosis. Knockdown TRIM32 expression remarkably suppressed the proliferation, migration, and invasion of GC cells in vitro and tumour growth in vivo, whereas overexpression of TRIM32 yielded the opposite results. Western blotting and quantitative reverse‐transcription PCR (qRT‐PCR) analyses revealed that up‐regulation of TRIM32 significantly enhanced expression of β‐catenin protein and of its downstream targets TCF1, cyclin D1, Axin2 and MMP7 mRNAs. Moreover, we found that the mechanism behind the TRIM32‐promoted GC progression was related to the β‐catenin signalling pathway. Collectively, these data suggest that TRIM32 promotes GC cell proliferation, migration, and invasion by activating the β‐catenin signalling pathway.
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Affiliation(s)
- Changming Wang
- General Surgery Department, Shanghai Baoshan Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201999, China
| | - Jiapeng Xu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Hongbing Fu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Yu Zhang
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Xin Zhang
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Dejun Yang
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Zhenxin Zhu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Ziran Wei
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Zunqi Hu
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Ronglin Yan
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Qingping Cai
- Department of Gastrointestinal Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
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15
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You H, Kong F, Zhou K, Wei X, Hu L, Hu W, Luo W, Kou Y, Liu X, Chen X, Zheng K, Tang R. HBX protein promotes LASP-1 expression through activation of c-Jun in human hepatoma cells. J Cell Physiol 2018; 233:7279-7291. [PMID: 29600594 DOI: 10.1002/jcp.26560] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Accepted: 02/21/2018] [Indexed: 12/15/2022]
Abstract
LIM and SH3 domain protein 1 (LASP-1) is known to participate in the progression of hepatocellular carcinoma (HCC). We previously showed that ectopic expression of hepatitis B virus (HBV) X protein (HBX) enhanced the expression of LASP-1, which promoted proliferation and migration of HCC cells. Here, we further demonstrated the molecular mechanism underlying upregulation of LASP-1, mediated by HBX, in HBV-infected HCC cells. Through a luciferase activity assay, we discovered that the LASP-1 promoter region regulated by HBX contained an AP-1 binding element in human hepatoma cells. Interestingly, c-Jun, one subunit of AP-1, was mainly responsible for activation, mediated by HBX, of the LASP-1 promoter. Furthermore, HBX was shown not only to interact with phosphorylated c-Jun in HCC cells but also to activate c-Jun by increasing the activation of PI3-K/JNK signaling. Chromatin immunoprecipitation (ChIP) assay demonstrated that HBX was capable of binding to the LASP-1 promoter with c-Jun. Further, the expression levels of HBX were shown to be significantly positively correlated with that of LASP-1 and phosphorylatedc-Jun in HBV-related HCC tissues by immunohistochemistry analysis. In addition, the N-terminus of HBX was found to be responsible for the activation of c-Jun, as well as the expression of LASP-1. Taken together, these results suggest that HBX contributes to LASP-1 expression via the activation of c-Jun to increase the promoter activity of LASP-1 in HBV-related HCC cells.
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Affiliation(s)
- Hongjuan You
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Fanyun Kong
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Kai Zhou
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xiao Wei
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Lei Hu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Wei Hu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Wenya Luo
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yanbo Kou
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xiaomei Liu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xi Chen
- Bio-pharmaceuticals (Collaboration Articulation Program), School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Kuiyang Zheng
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Renxian Tang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
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16
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Gao Q, Tang L, Wu L, Li K, Wang H, Li W, Wu J, Li M, Wang S, Zhao L. LASP1 promotes nasopharyngeal carcinoma progression through negatively regulation of the tumor suppressor PTEN. Cell Death Dis 2018. [PMID: 29531214 PMCID: PMC5847534 DOI: 10.1038/s41419-018-0443-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
LIM and SH3 protein 1 (LASP1) enhances tumor growth and metastasis in various cancers, but its role in nasopharyngeal carcinoma (NPC) remains unclear. Herein, we investigated the role of LASP1 in NPC and explored the underlying mechanisms in NPC. Clinically, overexpression of LASP1 is associated with tumor metastasis and poor prognosis of NPC patients. Gain-of-function and loss-of-function assays showed that LASP1 promoted NPC cell proliferation, metastasis, and invasion in vitro and in vivo. Mechanistically, we observed clear co-localization between LASP1 and PTEN in NPC cells. LASP1 interacted with PTEN and decreased the expression of PTEN in NPC. The ubiquitination assay indicated that LASP1 overexpression increased PTEN ubiquitination. PTEN was known as a tumor suppressor by negatively regulating phosphoinositide 3-kinase/AKT signaling pathway. Rescue experiments showed that PTEN weakened LASP1-mediated cell proliferation, migration, and invasive abilities and decreased the phosphorylation of AKT in NPC cells. Our findings suggest that LASP1 has a crucial role in NPC progression via LASP1/PTEN/AKT axis, highlighting LASP1 as a therapeutic target for NPC.
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Affiliation(s)
- Qingzu Gao
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Department of Pathology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Lihua Tang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Ling Wu
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Kaitao Li
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Hui Wang
- Department of Medical Oncology, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China
| | - Weidong Li
- Department of Medical Oncology, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China
| | - Juan Wu
- Department of Medical Oncology, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China
| | - Mingyi Li
- Radiotherapy Department, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shuang Wang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China. .,Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
| | - Liang Zhao
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China. .,Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
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17
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Endres M, Kneitz S, Orth MF, Perera RK, Zernecke A, Butt E. Regulation of matrix metalloproteinases (MMPs) expression and secretion in MDA-MB-231 breast cancer cells by LIM and SH3 protein 1 (LASP1). Oncotarget 2018; 7:64244-64259. [PMID: 27588391 PMCID: PMC5325439 DOI: 10.18632/oncotarget.11720] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 08/09/2016] [Indexed: 01/27/2023] Open
Abstract
The process of tumor invasion requires degradation of extracellular matrix by proteolytic enzymes. Cancer cells form protrusive invadopodia, which produce and release matrix metalloproteinases (MMPs) to degrade the basement membrane thereby enabling metastasis. We investigated the effect of LASP1, a newly identified protein in invadopodia, on expression, secretion and activation of MMPs in invasive breast tumor cell lines. By analyzing microarray data of in-house generated control and LASP1-depleted MDA-MB-231 breast cancer cells, we observed downregulation of MMP1, -3 and -9 upon LASP1 depletion. This was confirmed by Western blot analysis. Conversely, rescue experiments restored in part MMP expression and secretion. The regulatory effect of LASP1 on MMP expression was also observed in BT-20 breast cancer cells as well as in prostate and bladder cancer cell lines. In line with bioinformatic FunRich analysis of our data, which mapped a high regulation of transcription factors by LASP1, public microarray data analysis detected a correlation between high LASP1 expression and enhanced c-Fos levels, a protein that is part of the transcription factor AP-1 and known to regulate MMP expression. Compatibly, in luciferase reporter assays, AP-1 showed a decreased transcriptional activity after LASP1 knockdown. Zymography assays and Western blot analysis revealed an additional promotion of MMP secretion into the extracellular matrix by LASP1, thus, most likely, altering the microenvironment during cancer progression. The newly identified role of LASP1 in regulating matrix degradation by affecting MMP transcription and secretion elucidated the migratory potential of LASP1 overexpressing aggressive tumor cells in earlier studies.
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Affiliation(s)
- Marcel Endres
- Institute of Experimental Biomedicine II, University Medical Clinic of Wuerzburg, Wuerzburg, Germany
| | - Susanne Kneitz
- Physiological Chemistry, Biozentrum, University of Wuerzburg, Am Hubland, Wuerzburg, Germany
| | - Martin F Orth
- Institute of Experimental Biomedicine II, University Medical Clinic of Wuerzburg, Wuerzburg, Germany
| | - Ruwan K Perera
- Institute of Experimental Biomedicine II, University Medical Clinic of Wuerzburg, Wuerzburg, Germany
| | - Alma Zernecke
- Institute of Experimental Biomedicine II, University Medical Clinic of Wuerzburg, Wuerzburg, Germany
| | - Elke Butt
- Institute of Experimental Biomedicine II, University Medical Clinic of Wuerzburg, Wuerzburg, Germany
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18
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Sui Y, Zhang X, Yang H, Wei W, Wang M. MicroRNA-133a acts as a tumour suppressor in breast cancer through targeting LASP1. Oncol Rep 2017; 39:473-482. [PMID: 29207145 PMCID: PMC5783615 DOI: 10.3892/or.2017.6114] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022] Open
Abstract
Many microRNAs (miRs) have been demonstrated to play promoting or tumor suppressive roles in human cancers including breast cancer. However, the molecular mechanism of miR-133a underlying the malignant progression of breast cancer still remains obscure. In the present study we observed that the expression of miR-133a was significantly downregulated in breast cancer tissues and cell lines, when compared with adjacent non-tumor tissues and normal breast cell line, respectively. Reduced miR-133a levels were significantly associated with advanced clinical stage, lymph node metastasis, as well as shorter survival time of patients with breast cancer. Restoration of miR-133a expression led to significant decrease in the proliferation, migration, and invasion of SK-BR-3 and MDA-MB-231 cells in vitro, as well as in tumor xenograft growth in nude mice. Luciferase reporter gene assay data identified LASP1 as a target gene of miR-133a, and the expression of LASP1 was negatively regulated by miR-133a in breast cancer cells. LASP1 was significantly upregulated in breast cancer tissues and cell lines, and its upregulation was significantly associated with disease progression. siRNA-induced LASP1 downregulation caused a significant reduction in breast cancer cell proliferation, migration and invasion. Furthermore, overexpression of LASP1 impaired the suppressive effects of miR-133a upregulation on the proliferation, migration and invasion of SK-BR-3 and MDA-MB-231 cells. In summary, the present study demonstrates that miR-133a acts as a tumor suppressor in breast cancer partly at least via targeting LASP1, and thus suggests that the miR-133a/LASP1 axis may become a potential therapeutic target for breast cancer.
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Affiliation(s)
- Yanmin Sui
- Department of Oncology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China
| | - Xiaolei Zhang
- Department of Oncology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China
| | - Honglan Yang
- Department of Oncology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China
| | - Wei Wei
- Department of Oncology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China
| | - Minglin Wang
- Department of Oncology, Dongying People's Hospital, Dongying, Shandong 257091, P.R. China
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19
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Shi J, Guo J, Li X. Role of LASP-1, a novel SOX9 transcriptional target, in the progression of lung cancer. Int J Oncol 2017; 52:179-188. [PMID: 29138807 DOI: 10.3892/ijo.2017.4201] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 08/07/2017] [Indexed: 11/06/2022] Open
Abstract
Lung cancer accounts for most cancer-related deaths worldwide. However, the underlying mechanism by which it mediates the progression of lung cancer remains unclear. Expression of LASP-1 (LIM and SH3 protein 1) was evaluated in lung cancer tissues and tumor-adjacent normal tissues using immunohistochemistry and western blotting. Functional studies have shown that siRNA-mediated silencing of LASP-1 in human lung cancer cells and reduced cell proliferation, migration, and invasion. Flow cytometry and immunofluorescence staining also revealed that rate of cell apoptosis was increased after knockdown of expression of LASP-1, thereby suggesting that LASP-1 may function as an oncogene during lung cancer progression. SOX9 is an important transcription factor, which is involved in the development of several types of human cancer. Further analysis has showed the presence of a consensus-binding site of SOX9 in the promoter region of LASP-1. Mechanistic investigations showed that LASP-1 was transcriptionally activated by SOX9. Through luciferase reporter and ChIP assays, we demonstrated that LASP-1 was a direct target gene of sex determining region Y-box 9 (SOX9). Knockdown of SOX9 expression by RNA interference reduces cell proliferation and induces apoptosis of lung cancer cells, which was consistent with the results obtained from silencing the expression of LASP-1 in NCI‑H1650 cells. Together, these findings indicated that LASP-1, as a downstream target of SOX9, may act as a novel biomarker for lung cancer and plays an important role in cell proliferation, migration, and invasion.
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Affiliation(s)
- Jianguang Shi
- Department of Thoracic Surgery, Ningbo First Hospital, Haishu, Ningbo, Zhejiang 315010, P.R. China
| | - Jing Guo
- Department of Thoracic Surgery, Ningbo First Hospital, Haishu, Ningbo, Zhejiang 315010, P.R. China
| | - Xinjian Li
- Department of Thoracic Surgery, Ningbo First Hospital, Haishu, Ningbo, Zhejiang 315010, P.R. China
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20
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Zhang X, Liu Y, Fan C, Wang L, Li A, Zhou H, Cai L, Miao Y, Li Q, Qiu X, Wang E. Lasp1 promotes malignant phenotype of non-small-cell lung cancer via inducing phosphorylation of FAK-AKT pathway. Oncotarget 2017; 8:75102-75113. [PMID: 29088849 PMCID: PMC5650404 DOI: 10.18632/oncotarget.20527] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 07/28/2017] [Indexed: 12/12/2022] Open
Abstract
Lasp1 (LIM and SH3 domain protein 1) promotes tumor proliferation and invasion in multiple cancer entities including non-small cell lung cancer (NSCLC). However, the molecular mechanism is uncertain to date. In the present study, using immunohistochemistry, we found that Lasp1 expression was significantly correlated with tumor size (P=0.005), advanced TNM stage (P=0.042), positive regional lymph node metastasis (P=0.034) and poor overall survival (P<0.001). Similar results were seen in patients with squamous cell lung carcinoma (P=0.003 for larger tumor size, P=0.017 for advanced TNM stage, P=0.003 for positive lymph node metastasis and P<0.001 for poor overall survival) but not in patients with lung adenocarcinoma (P>0.05). Proliferation and invasion assay showed that Lasp1 dramatically promoted the ability of proliferation and invasion of NSCLC cells. Subsequent western blot results revealed that Lasp1 promoted the expression of Cyclin A2, CyclinB1, and Snail, and inhibited the expression of E-cadherin. Lasp1 directly interacted with FAK and facilitated the expression of phosphorylated FAK (Tyr397) and AKT (Ser473). Incorporation of both FAK inhibitor and AKT inhibitor counteracted the upregulating expression of Cyclin A2, CyclinB1, and Snail, and downregulating expression of E-cadherin expression induced by Lasp1 overexpression. Interestingly, inhibition of FAK signaling pathway attenuated the phosphorylation of AKT, but inhibition of AKT signaling pathway did not affect the phosphorylation of FAK. In conclusion, Lasp1 facilitated tumor proliferation and invasion of NSCLC through directly binding to FAK and enhancing the phosphorylation of FAK (Tyr397) and AKT (Ser473). Lasp1 may be a novel therapeutic target in the treatment of NSCLC patients.
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Affiliation(s)
- Xiupeng Zhang
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Yang Liu
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Chuifeng Fan
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Liang Wang
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Ailin Li
- Department of Radiotherapy, First Hospital of China Medical University, Shenyang, China
| | - Haijing Zhou
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Lin Cai
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Yuan Miao
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Qingchang Li
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Xueshan Qiu
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Enhua Wang
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
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21
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Zhang X, Cai L, Zhou H, Liu Y, Fan C, Wang L, Li A, Miao Y, Li Q, Qiu X, Wang E. Lasp2 enhances tumor invasion via facilitating phosphorylation of FAK and predicts poor overall survival of non-small cell lung cancer patients. Mol Carcinog 2017; 56:2558-2565. [PMID: 28667800 DOI: 10.1002/mc.22700] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 05/13/2017] [Accepted: 06/29/2017] [Indexed: 12/28/2022]
Abstract
Lasp2, as well as Lasp1, is a member of the LIM-protein subfamily of the nebulin group characterized by the combined presence of LIM and SH3 domains. Lasp1 and Lasp2 are highly conserved in their LIM, nebulin-like, and SH3 domains but differ significantly at their linker regions. Lasp1 had been described as an oncogenic protein that was highly expressed in diverse cancer types and facilitated tumor proliferation, invasion, and metastasis process. However, unlike Lasp1, little is known about the functions of Lasp2. In the present study, using immunohistochemistry, we found that Lasp2 expression was significantly correlated with histological type (P = 0.012), advanced TNM stage (P = 0.024), positive regional lymph node metastasis (P = 0.035), and poor overall survival (P = 0.001). Would healing assay and transwell assay results indicated that Lasp2 promoted tumor migration and invasion in NSCLC cells. Furthermore, Lasp2 facilitated Snail expression and inhibited Zo-1. The levels of phosphorylated FAK (Tyr397 and Tyr925) were obviously increased after overexpressing Lasp2 and were downregulated by transfecting Lasp2-siRNA. FAK inhibitor counteracted upregulating Snail expression and downregulating of Zo-1 expression induced by Lasp2 overexpression. Taken together, Lasp2 may facilitate tumor migration and invasion of NSCLCs through FAK-Snail/Zo-1 signaling pathway. Lasp2 may be a potential prognostic predictor of NSCLC patients.
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Affiliation(s)
- Xiupeng Zhang
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Lin Cai
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Haijing Zhou
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Yang Liu
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Chuifeng Fan
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Liang Wang
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Ailin Li
- Department of Radiotherapy, First Hospital of China Medical University, Shenyang, China
| | - Yuan Miao
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Qingchang Li
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Xueshan Qiu
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
| | - Enhua Wang
- Department of Pathology, Basic Medicine Science and First Hospital of China Medical University, Shenyang, China
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22
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Solomon O, Yousefi P, Huen K, Gunier RB, Escudero-Fung M, Barcellos LF, Eskenazi B, Holland N. Prenatal phthalate exposure and altered patterns of DNA methylation in cord blood. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2017; 58:398-410. [PMID: 28556291 PMCID: PMC6488305 DOI: 10.1002/em.22095] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 05/18/2023]
Abstract
Epigenetic changes such as DNA methylation may be a molecular mechanism through which environmental exposures affect health. Phthalates are known endocrine disruptors with ubiquitous exposures in the general population including pregnant women, and they have been linked with a number of adverse health outcomes. We examined the association between in utero phthalate exposure and altered patterns of cord blood DNA methylation in 336 Mexican-American newborns. Concentrations of 11 phthalate metabolites were analyzed in maternal urine samples collected at 13 and 26 weeks gestation as a measure of fetal exposure. DNA methylation was assessed using the Infinium HumanMethylation 450K BeadChip adjusting for cord blood cell composition. To identify differentially methylated regions (DMRs) that may be more informative than individual CpG sites, we used two different approaches, DMRcate and comb-p. Regional assessment by both methods identified 27 distinct DMRs, the majority of which were in relation to multiple phthalate metabolites. Most of the significant DMRs (67%) were observed for later pregnancy (26 weeks gestation). Further, 51% of the significant DMRs were associated with the di-(2-ethylhexyl) phthalate metabolites. Five individual CpG sites were associated with phthalate metabolite concentrations after multiple comparisons adjustment (FDR), all showing hypermethylation. Genes with DMRs were involved in inflammatory response (IRAK4 and ESM1), cancer (BRCA1 and LASP1), endocrine function (CNPY1), and male fertility (IFT140, TESC, and PRDM8). These results on differential DNA methylation in newborns with prenatal phthalate exposure provide new insights and targets to explore mechanism of adverse effects of phthalates on human health. Environ. Mol. Mutagen. 58:398-410, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Olivia Solomon
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
| | - Paul Yousefi
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
| | - Karen Huen
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
| | - Robert B. Gunier
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
| | - Maria Escudero-Fung
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
| | - Lisa F. Barcellos
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
| | - Brenda Eskenazi
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
| | - Nina Holland
- School of Public Health, Center for Environmental Research and Children’s Health (CERCH), University
of California, Berkeley, Berkeley, CA 94720, USA
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Christensen AG, Ehmsen S, Terp MG, Batra R, Alcaraz N, Baumbach J, Noer JB, Moreira J, Leth-Larsen R, Larsen MR, Ditzel HJ. Elucidation of Altered Pathways in Tumor-Initiating Cells of Triple-Negative Breast Cancer: A Useful Cell Model System for Drug Screening. Stem Cells 2017; 35:1898-1912. [DOI: 10.1002/stem.2654] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 05/31/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Anne G. Christensen
- Department of Cancer and Inflammation Research; Institute of Molecular Medicine, University of Southern Denmark; Odense Denmark
| | - Sidse Ehmsen
- Department of Cancer and Inflammation Research; Institute of Molecular Medicine, University of Southern Denmark; Odense Denmark
| | - Mikkel G. Terp
- Department of Cancer and Inflammation Research; Institute of Molecular Medicine, University of Southern Denmark; Odense Denmark
| | - Richa Batra
- Department of Mathematics and Computer Science; Faculty of Science, University of Southern Denmark; Odense Denmark
| | - Nicolas Alcaraz
- Department of Mathematics and Computer Science; Faculty of Science, University of Southern Denmark; Odense Denmark
| | - Jan Baumbach
- Department of Mathematics and Computer Science; Faculty of Science, University of Southern Denmark; Odense Denmark
| | - Julie B. Noer
- Section for Molecular Disease Biology, Department of Veterinary Disease Biology; Section for Molecular Disease Biology, University of Copenhagen; Frederiksberg C Denmark
| | - José Moreira
- Section for Molecular Disease Biology, Department of Veterinary Disease Biology; Section for Molecular Disease Biology, University of Copenhagen; Frederiksberg C Denmark
| | - Rikke Leth-Larsen
- Department of Cancer and Inflammation Research; Institute of Molecular Medicine, University of Southern Denmark; Odense Denmark
| | - Martin R. Larsen
- Department of Biochemistry and Molecular Biology; University of Southern Denmark; Odense Denmark
- Department of Clinical Biochemistry and Pharmacology; Centre for Clinical Proteomics, Odense University Hospital; Odense Denmark
| | - Henrik J. Ditzel
- Department of Cancer and Inflammation Research; Institute of Molecular Medicine, University of Southern Denmark; Odense Denmark
- Department of Oncology; Odense University Hospital; Odense Denmark
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Ruggieri V, Agriesti F, Tataranni T, Perris R, Mangieri D. Paving the path for invasion: The polyedric role of LASP1 in cancer. Tumour Biol 2017. [PMID: 28621232 DOI: 10.1177/1010428317705757] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Although usually referred to as a structural actin-binding protein, LIM and SH3 domain-containing protein may actually be dynamically involved in the control of a wide spectrum of cellular processes, by virtue of its interaction with several molecular partners. Alongside being ubiquitously expressed in physiological conditions, LIM and SH3 domain-containing protein is overexpressed in a growing number of human cancers, in which it may actively contribute to their aggressiveness by promoting cell proliferation and migration. In view of the recent findings, implicating the protein in cancer progression, we discuss here the most relevant discoveries highlighting the role of this versatile protein in various human tumors. The correlation between LIM and SH3 domain-containing protein expression levels in cancer and the poor outcome and metastatic behavior of tumors denotes the clinical significance of this protein and hints its potential value as a new cancer prognostic or even diagnostic biomarker. This may be decisive not only to optimize existing pharmacological regimes but also to delineate novel, more efficacious therapeutic and/or preventive approaches.
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Affiliation(s)
- Vitalba Ruggieri
- 1 Laboratory of Pre-Clinical and Translational Research, IRCCS-CROB, Referral Cancer Center of Basilicata, Rionero in Vulture (Pz), Italy
| | - Francesca Agriesti
- 1 Laboratory of Pre-Clinical and Translational Research, IRCCS-CROB, Referral Cancer Center of Basilicata, Rionero in Vulture (Pz), Italy
| | - Tiziana Tataranni
- 1 Laboratory of Pre-Clinical and Translational Research, IRCCS-CROB, Referral Cancer Center of Basilicata, Rionero in Vulture (Pz), Italy
| | - Roberto Perris
- 2 Center for Molecular and Translational Oncology, University of Parma, Parma, Italy
| | - Domenica Mangieri
- 3 Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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25
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Oh PS, Kim HS, Kim EM, Hwang H, Ryu HH, Lim S, Sohn MH, Jeong HJ. Inhibitory effect of blue light emitting diode on migration and invasion of cancer cells. J Cell Physiol 2017; 232:3444-3453. [PMID: 28098340 DOI: 10.1002/jcp.25805] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 01/14/2017] [Accepted: 01/17/2017] [Indexed: 12/20/2022]
Abstract
The aim of this study was to determine the effects and molecular mechanism of blue light emitting diode (LED) in tumor cells. A migration and invasion assay for the metastatic behavior of mouse colon cancer CT-26 and human fibrosarcoma HT-1080 cells was performed. Cancer cell migration-related proteins were identified by obtaining a 2-dimensional gel electrophoresis (2-DE) in total cellular protein profile of blue LED-irradiated cancer cells, followed by matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) analysis of proteins. Protein levels were examined by immunoblotting. Irradiation with blue LED inhibited CT-26 and HT-1080 cell migration and invasion. The anti-metastatic effects of blue LED irradiation were associated with inhibition of matrix metalloproteinase (MMP)-2 and MMP-9 expression. P38 MAPK phosphorylation was increased in blue LED-irradiated CT-26 and HT-1080 cells, but was inhibited after pretreatment with SB203580, a specific inhibitor of p38 MAPK. Inhibition of p38 MAPK phosphorylation by SB203580 treatment increased number of migratory cancer cells in CT-26 and HT-1080 cells, indicating that blue LED irradiation inhibited cancer cell migration via phosphorylation of p38 MAPK. Additionally blue LED irradiation of mice injected with CT-26 cells expressing luciferase decreased early stage lung metastasis compared to untreated control mice. These results indicate that blue LED irradiation inhibits cancer cell migration and invasion in vitro and in vivo.
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Affiliation(s)
- Phil-Sun Oh
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
| | - Hyun-Soo Kim
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
| | - Eun-Mi Kim
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
| | - Hyosook Hwang
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
| | - Hyang Hwa Ryu
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
| | - SeokTae Lim
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
| | - Myung-Hee Sohn
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
| | - Hwan-Jeong Jeong
- Molecular Imaging and Therapeutic Medicine Research Center, Cyclotron Research Center, Institute for Medical Sciences, Biomedical Research Institute, Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Republic of Korea
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26
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Butt E, Ebbing J, Bubendorf L, Ardelt P. Influence of hematuria and infection on diagnostic accuracy of urinary LASP1: a new biomarker for bladder carcinoma. Biomark Med 2017; 11:347-357. [PMID: 28290211 DOI: 10.2217/bmm-2016-0348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM To further promote the clinical use of urinary LASP1 as biomarker for urothelial carcinoma of the bladder regarding limitations and alternative testing systems. PATIENTS & METHODS Urine stabilization, alternative measurement systems and limitations by erythrocyte contamination and infection were investigated in 246 patients. RESULTS Thimerosal allowed sufficient stabilization. Fluorescence-activated cell sorting analysis was not influenced by presence of erythrocytes or leukocytes and reliably urothelial carcinoma of the bladder but cell counts in specimen were low. Cut-off values of <25 leukocytes and <200 erythrocytes/µl resulted in sensitivity, specificity, positive and negative predictive values of 0.59, 0.80, 0.80 and 0.59, respectively. CONCLUSION Hematuria up to 200 erythrocytes/µl but not presence of leukocytes may be tolerated for this promising marker.
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Affiliation(s)
- Elke Butt
- Institute for Experimental Biomedicine II, University Clinic of Wuerzburg, Germany
| | - Jan Ebbing
- Department of Urology, University Hospital Basel, Basel, Switzerland
| | - Lukas Bubendorf
- Department of Pathology, University Hospital Basel, Basel, Switzerland
| | - Peter Ardelt
- Department of Urology, University Hospital Basel, Basel, Switzerland
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27
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Kong FY, Zhu T, Li N, Cai YF, Zhou K, Wei X, Kou YB, You HJ, Zheng KY, Tang RX. Bioinformatics analysis of the proteins interacting with LASP-1 and their association with HBV-related hepatocellular carcinoma. Sci Rep 2017; 7:44017. [PMID: 28266596 PMCID: PMC5339786 DOI: 10.1038/srep44017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 02/02/2017] [Indexed: 12/11/2022] Open
Abstract
LIM and SH3 domain protein (LASP-1) is responsible for the development of several types of human cancers via the interaction with other proteins; however, the precise biological functions of proteins interacting with LASP-1 are not fully clarified. Although the role of LASP-1 in hepatocarcinogenesis has been reported, the implication of LASP-1 interactors in HBV-related hepatocellular carcinoma (HCC) is not clearly evaluated. We obtained information regarding LASP-1 interactors from public databases and published studies. Via bioinformatics analysis, we found that LASP-1 interactors were related to distinct molecular functions and associated with various biological processes. Through an integrated network analysis of the interaction and pathways of LASP-1 interactors, cross-talk between different proteins and associated pathways was found. In addition, LASP-1 and several its interactors are significantly altered in HBV-related HCC through microarray analysis and could form a complex co-expression network. In the disease, LASP-1 and its interactors were further predicted to be regulated by a complex interaction network composed of different transcription factors. Besides, numerous LASP-1 interactors were associated with various clinical factors and related to the survival and recurrence of HBV-related HCC. Taken together, these results could help enrich our understanding of LASP-1 interactors and their relationships with HBV-related HCC.
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Affiliation(s)
- Fan-Yun Kong
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Ting Zhu
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Nan Li
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yun-Fei Cai
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Kai Zhou
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xiao Wei
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yan-Bo Kou
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Hong-Juan You
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Kui-Yang Zheng
- Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Ren-Xian Tang
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu, China.,Department of Pathogenic Biology and Immunology, Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
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28
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He MQ, He MQ, Wang JF, Zhu BL, Sun N, Zhou XH, Yao RX. Vascular Endothelial Growth Factor and Cluster of Differentiation 34 for Assessment of Perioperative Bleeding Risk in Gastric Cancer Patients. Chin Med J (Engl) 2017; 129:1950-4. [PMID: 27503021 PMCID: PMC4989427 DOI: 10.4103/0366-6999.187842] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background: Angiogenesis is the formation of new blood vessels to supply nutrients to tumors. Vascular endothelial growth factor (VEGF) and cluster of differentiation 34 (CD34) are important signaling proteins involved in angiogenesis. Many studies have demonstrated that VEGF and CD34 are related to tumor progression. This study focused on the relationship between VEGF, CD34, and perioperative hemorrhage in patients with gastric cancer. Methods: To observe the relationship between VEGF and CD34, we tracked 112 patients with advanced gastric cancer for 5 years to assess factors related to hemorrhage, using immunohistochemistry. The results were subjected to statistical analysis using a 2 × 2 contingency table, logistic regression, and receiver operating characteristic (ROC) test. Results: The concentrations of VEGF and CD34 were critically correlated with perioperative hemorrhage and neural invasion in patients with gastric cancer (P < 0.05). Expression of VEGF and CD34 was related (P < 0.05, χ2 = 6.834). VEGF and CD34 co-expression strongly increased the risk of preoperative bleeding (area under the ROC curve >0.7, P < 0.05). Conclusions: Expression of VEGF and CD34 was critically correlated with perioperative hemorrhage in gastric cancer patients. Co-expression of VEGF and CD34 could be an effective indicator for evaluating the risk of perioperative bleeding in gastric cancer patients.
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Affiliation(s)
- Mu-Qing He
- Department of Hematology and Medical Oncology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Mu-Qun He
- Department of Medical Oncology, Fujian Provincial Tumor Hospital, Fuzhou, Fujian 350014, China
| | - Jian-Feng Wang
- Department of Medical Oncology, Fujian Provincial Tumor Hospital, Fuzhou, Fujian 350014, China
| | - Bao-Ling Zhu
- Department of Hematology and Medical Oncology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Ni Sun
- Department of Hematology and Medical Oncology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Xiao-Hai Zhou
- Department of Hematology and Medical Oncology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Rong-Xin Yao
- Department of Hematology and Medical Oncology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
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Li W, Li H, Zhang L, Hu M, Li F, Deng J, An M, Wu S, Ma R, Lu J, Zhou Y. Long non-coding RNA LINC00672 contributes to p53 protein-mediated gene suppression and promotes endometrial cancer chemosensitivity. J Biol Chem 2017; 292:5801-5813. [PMID: 28232485 DOI: 10.1074/jbc.m116.758508] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 02/19/2017] [Indexed: 01/01/2023] Open
Abstract
Thousands of long intergenic non-protein coding RNAs (lincRNAs) have been identified in mammals in genome-wide sequencing studies. Some of these RNAs have been consistently conserved during the evolution of species and could presumably function in important biologic processes. Therefore, we measured the levels of 26 highly conserved lincRNAs in a total of 176 pairs of endometrial carcinoma (EC) and surrounding non-tumor tissues of two distinct Chinese populations. Here, we report that a lincRNA, LINC00672, which possesses an ultra-conserved region, is aberrantly down-regulated during the development of EC. Nevertheless, LINC00672 is a p53-targeting lincRNA acting along with heterogeneous nuclear ribonucleoproteins as a suppressive cofactor, which locally reinforces p53-mediated suppression of LASP1, an evolutionarily conserved neighboring gene of LINC00672 and putatively associated with increased tumor aggressiveness, during anti-tumor processes. LINC00672 overexpression could lower the levels of LASP1 and slow the development of malignant phenotypes of EC both in vitro and in vivo Moreover, LINC00672 significantly increased the 50% inhibitory concentration of paclitaxel in EC cells and increased the sensitivity of xenograft mice to paclitaxel. These findings indicate that LINC00672 can influence LASP1 expression as a locus-restricted cofactor for p53-mediated gene suppression, thus impacting EC malignancies and chemosensitivity to paclitaxel.
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Affiliation(s)
- Wei Li
- From the Department of Genetics, Medical College of Soochow University, Suzhou 215123
| | - Hua Li
- the Department of Obstetrics and Gynecology, Third Hospital, Peking University, Beijing 100191
| | - Liyuan Zhang
- the Departments of Radiotherapy and Oncology and
| | - Min Hu
- Obstetrics and Gynecology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, and
| | - Fang Li
- From the Department of Genetics, Medical College of Soochow University, Suzhou 215123
| | - Jieqiong Deng
- From the Department of Genetics, Medical College of Soochow University, Suzhou 215123
| | - Mingxing An
- From the Department of Genetics, Medical College of Soochow University, Suzhou 215123
| | - Siqi Wu
- From the Department of Genetics, Medical College of Soochow University, Suzhou 215123
| | - Rui Ma
- From the Department of Genetics, Medical College of Soochow University, Suzhou 215123
| | - Jiachun Lu
- the Institute for Chemical Carcinogenesis, The State Key Lab of Respiratory Disease, Guangzhou Medical University, Guangzhou 510182, China
| | - Yifeng Zhou
- From the Department of Genetics, Medical College of Soochow University, Suzhou 215123,
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30
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Dejima T, Imada K, Takeuchi A, Shiota M, Leong J, Tombe T, Tam K, Fazli L, Naito S, Gleave ME, Ong CJ. Suppression of LIM and SH3 Domain Protein 1 (LASP1) Negatively Regulated by Androgen Receptor Delays Castration Resistant Prostate Cancer Progression. Prostate 2017; 77:309-320. [PMID: 27775154 DOI: 10.1002/pros.23269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 10/11/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND LIM and SH3 domain protein 1 (LASP1) has been implicated in several human malignancies and has been shown to predict PSA recurrence in prostate cancer. However, the anti-tumor effect of LASP1 knockdown and the association between LASP1 and the androgen receptor (AR) remains unclear. The aim of this study is to clarify the significance of LASP1 as a target for prostate cancer, and to test the effect of silencing LASP1 in vivo using antisense oligonucleotides (ASO). METHODS A tissue microarray (TMA) was performed to characterize the differences in LASP1 expression in prostate cancer treated after hormone deprivation therapy. Flow cytometry was used to analyze cell cycle. We designed LASP1 ASO for knockdown of LASP1 in vivo studies. RESULTS The expression of LASP1 in TMA was increased after androgen ablation and persisted in castration resistant prostate cancer (CRPC). Also in TMA, compared with LNCaP cell, LASP1 expression is elevated in CRPC cell lines (C4-2 and VehA cells). Interestingly, suppression of AR elevated LASP1 expression conversely, AR activation decreased LASP1 expression. Silencing of LASP1 reduced cell growth through G1 arrest which was accompanied by a decrease of cyclin D1. Forced overexpression of LASP1 promoted cell cycle and induced cell growth which was accompanied by an increase of cyclin D1. Systemic administration of LASP1 ASO with athymic mice significantly inhibited tumor growth in CRPC xenografts. CONCLUSIONS These results indicate that LASP1 is negatively regulated by AR at the transcriptional level and promotes tumor growth through induction of cell cycle, ultimately suggesting that LASP1 may be a potential target in prostate cancer treatment. Prostate 77:309-320, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Takashi Dejima
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenjiro Imada
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ario Takeuchi
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaki Shiota
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Jeffrey Leong
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Tabitha Tombe
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kevin Tam
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ladan Fazli
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Seiji Naito
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Martin E Gleave
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Christopher J Ong
- Vancouver Prostate Centre and Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
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31
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Mahajan N. Signatures of prostate-derived Ets factor (PDEF) in cancer. Tumour Biol 2016; 37:14335-14340. [DOI: 10.1007/s13277-016-5326-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 09/06/2016] [Indexed: 12/20/2022] Open
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32
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LASP-1, regulated by miR-203, promotes tumor proliferation and aggressiveness in human non-small cell lung cancer. Exp Mol Pathol 2016; 100:116-24. [DOI: 10.1016/j.yexmp.2015.11.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 11/28/2015] [Accepted: 11/30/2015] [Indexed: 12/14/2022]
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33
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Li Z, Chen Y, Wang X, Zhang H, Zhang Y, Gao Y, Weng M, Wang L, Liang H, Li M, Zhang F, Zhao S, Liu S, Cao Y, Shu Y, Bao R, Zhou J, Liu X, Yan Y, Zhen L, Dong Q, Liu Y. LASP-1 induces proliferation, metastasis and cell cycle arrest at the G2/M phase in gallbladder cancer by down-regulating S100P via the PI3K/AKT pathway. Cancer Lett 2016; 372:239-50. [PMID: 26797416 DOI: 10.1016/j.canlet.2016.01.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/26/2015] [Accepted: 01/06/2016] [Indexed: 12/21/2022]
Abstract
LASP-1 is an actin-binding protein that regulates cytoskeletal dynamics and cell migration. LASP-1 was previously identified in a cDNA library from metastatic breast cancer samples. This protein has since been detected in multiple human cancers, including liver cancer, gastric cancer and pancreatic cancer. S100P is a small calcium-binding protein in the S100 protein family that regulates cellular, physiological and pathological processes in various cancers. However, the clinical significance of LASP-1 and S100P expression in gallbladder cancer (GBC) is not yet clear. In our study, we focused on the clinical significance, biological function and mechanism of LASP-1 in gallbladder cancer and detected LASP-1 and S100P overexpression in GBC tissues. The expression of LASP-1 was significantly correlated with poor prognosis in GBC patients (P < 0.05). Furthermore, down-regulation of LASP-1 expression resulted in the obvious inhibition of proliferation and migration and caused cell cycle arrest by down-regulating S100P via the PI3K/AKT pathway; in mice, tumor volume was significantly decreased. In conclusion, LASP-1 may act as an oncogene to regulate the expression of S100P to influence cellular functions in GBC. LASP-1 could serve as a genetic treatment target in GBC patients.
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Affiliation(s)
- ZhiZhen Li
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - YuanYuan Chen
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - XuAn Wang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - HongChen Zhang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Yijian Zhang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - YaoHui Gao
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Mingzhe Weng
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Lei Wang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - HaiBin Liang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - MaoLan Li
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Fei Zhang
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Shuai Zhao
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Shibo Liu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Yang Cao
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Yijun Shu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Runfa Bao
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Jian Zhou
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Xiyong Liu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Yun Yan
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Lei Zhen
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China
| | - Qian Dong
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China.
| | - Yingbin Liu
- Department of General Surgery and Laboratory of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China; Institute of Biliary Tract Disease Research, Shanghai Jiao Tong University School of Medicine, No. 1665 Kongjiang Road, Shanghai 200092, China.
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Zhang H, Li Z, Chu B, Zhang F, Zhang Y, Ke F, Chen Y, Xu Y, Liu S, Zhao S, Liang H, Weng M, Wu X, Li M, Wu W, Quan Z, Liu Y, Zhang Y, Gong W. Upregulated LASP-1 correlates with a malignant phenotype and its potential therapeutic role in human cholangiocarcinoma. Tumour Biol 2016; 37:8305-15. [PMID: 26729195 DOI: 10.1007/s13277-015-4704-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 12/20/2015] [Indexed: 02/08/2023] Open
Abstract
LIM and SH3 protein 1 (LASP-1) is demonstrated to play a key role in occurrence and development of tumors. However, the expression and function of LASP-1 in cholangiocarcinoma (CCA) remain largely unexplored. This study aimed to investigate the effect of regulated LASP-1 expression on migration, invasion, proliferation, and apoptosis of CCA cells and on tumorigenesis in vivo, and to examine clinico-oncological correlates of LASP-1 expression. Expression of LASP-1 by immunohistochemistry was evaluated in CCA tissue samples. HCCC-9810 and RBE cells were transfected with the LASP-1 small interfering RNA (siRNA), and the effect of knocking down LASP-1 gene expression on cell migration, invasion, proliferation, and apoptosis were examined by wound healing, transwell assays, CCK-8 assays, colony formation, and flow cytometry assays, respectively. Xenograft tumor model was used to validate the effect of downregulated LASP-1 in vivo. Our results demonstrated that LASP-1 was over-expressed in CCA tissues, positively correlating with larger tumors, poor histological differentiation, lymph node metastasis, advanced TNM stage, and poor prognosis in CCA patients (P < 0.05). Downregulation of LASP-1 in HCCC-9810 and RBE cell lines significantly increased cell apoptosis and suppressed cell migration, invasion, and proliferation in vitro and tumorigenesis in vivo. Our results indicate that LASP-1 may essentially involve in the metastasis and growth of CCA and clinical significance of LASP-1 may reside in function as a biomarker to predict prognosis and as a promising therapeutic strategy for CCA patients by the inhibition of LASP-1 expression.
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Affiliation(s)
- Hongchen Zhang
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Zhizhen Li
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Bingfeng Chu
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Fei Zhang
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yijian Zhang
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Fayong Ke
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yuanyuan Chen
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yi Xu
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Shibo Liu
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Shuai Zhao
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Haibin Liang
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Mingzhe Weng
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xiangsong Wu
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Maolan Li
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Wenguang Wu
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Zhiwei Quan
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yingbin Liu
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yong Zhang
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Wei Gong
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China. .,The Institute of Biliary Disease Research, School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, China.
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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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The cytoskeletal protein LASP-1 differentially regulates migratory activities of choriocarcinoma cells. Arch Gynecol Obstet 2015; 293:407-14. [DOI: 10.1007/s00404-015-3830-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 07/27/2015] [Indexed: 01/06/2023]
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Alshalalfa M, Schliekelman M, Shin H, Erho N, Davicioni E. Evolving transcriptomic fingerprint based on genome-wide data as prognostic tools in prostate cancer. Biol Cell 2015; 107:232-44. [PMID: 25900404 PMCID: PMC4744779 DOI: 10.1111/boc.201400097] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 04/18/2015] [Indexed: 02/06/2023]
Abstract
Background Information Prostate cancer (PCa) is a common disease but only a small subset of patients are at risk of developing metastasis and lethal disease, and identifying which patients will progress is challenging because of the heterogeneity underlying tumour progression. Understanding this heterogeneity at the molecular level and the resulting clinical impact is a critical step necessary for risk stratification. Defining genomic fingerprint elucidates molecular variation and may improve PCa risk stratification, providing more accurate prognostic information of tumour aggressiveness (or lethality) for prognostic biomarker development. Therefore, we explored transcriptomic differences between patients with indolent disease outcome and patients who developed metastasis post‐radical prostatectomy using genome‐wide expression data in the post radical prostatectomy clinical space before metastatic spread. Results Based on differential expression analysis, patients with adverse pathological findings who are at higher risk of developing metastasis have a distinct transcriptomic fingerprint that can be detected on surgically removed prostate specimens several years before metastasis detection. Nearly half of the transcriptomic fingerprint features were non‐coding RNA highlighting their pivotal role in PCa progression. Protein‐coding RNA features in the fingerprint are involved in multiple pathways including cell cycle, chromosome structure maintenance and cytoskeleton organisation. The metastatic transcriptomic fingerprint was determined in independent cohorts verifying the association between the fingerprint and metastatic patients. Further, the fingerprint was confirmed in metastasis lesions demonstrating that the fingerprint represents early metastatic transcriptomic changes, suggesting its utility as a prognostic tool to predict metastasis and provide clinical value in the early radical prostatectomy setting. Conclusions Here, we show that transcriptomic patterns of metastatic PCa exist that can be detected early after radical prostatectomy. This metastatic fingerprint has potential prognostic ability that can impact PCa treatment management potentially circumventing the requirements for unnecessary therapies.
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Vaman V. S. A, Poppe H, Houben R, Grunewald TGP, Goebeler M, Butt E. LASP1, a Newly Identified Melanocytic Protein with a Possible Role in Melanin Release, but Not in Melanoma Progression. PLoS One 2015; 10:e0129219. [PMID: 26061439 PMCID: PMC4465371 DOI: 10.1371/journal.pone.0129219] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 05/06/2015] [Indexed: 12/25/2022] Open
Abstract
The LIM and SH3 protein 1 (LASP1) is a focal adhesion protein. Its expression is increased in many malignant tumors. However, little is known about the physiological role of the protein. In the present study, we investigated the expression and function of LASP1 in normal skin, melanocytic nevi and malignant melanoma. In normal skin, a distinct LASP1 expression is visible only in the basal epidermal layer while in nevi LASP1 protein is detected in all melanocytes. Melanoma exhibit no increase in LASP1 mRNA compared to normal skin. In melanocytes, the protein is bound to dynamin and mainly localized at late melanosomes along the edges and at the tips of the cell. Knockdown of LASP1 results in increased melanin concentration in the cells. Collectively, we identified LASP1 as a hitherto unknown protein in melanocytes and as novel partner of dynamin in the physiological process of membrane constriction and melanosome vesicle release.
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Affiliation(s)
- Anjana Vaman V. S.
- Institute of Clinical Biochemistry and Pathobiochemistry, University Hospital Würzburg, Würzburg, Germany
| | - Heiko Poppe
- Institute of Clinical Biochemistry and Pathobiochemistry, University Hospital Würzburg, Würzburg, Germany
- Department of Dermatology, University Hospital Würzburg, Würzburg, Germany
| | - Roland Houben
- Department of Dermatology, University Hospital Würzburg, Würzburg, Germany
| | - Thomas G. P. Grunewald
- Laboratory for Pediatric Sarcoma Biology, Institute of Pathology, Ludwig Maximilians University Munich, Munich, Germany
| | - Matthias Goebeler
- Department of Dermatology, University Hospital Würzburg, Würzburg, Germany
| | - Elke Butt
- Institute of Clinical Biochemistry and Pathobiochemistry, University Hospital Würzburg, Würzburg, Germany
- * E-mail:
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LASP1 is a novel BCR-ABL substrate and a phosphorylation-dependent binding partner of CRKL in chronic myeloid leukemia. Oncotarget 2015; 5:5257-71. [PMID: 24913448 PMCID: PMC4170624 DOI: 10.18632/oncotarget.2072] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Chronic myeloid leukemia (CML) is characterized by a genomic translocation generating a permanently active BCR-ABL oncogene with a complex pattern of atypically tyrosine-phosphorylated proteins that drive the malignant phenotype of CML. Recently, the LIM and SH3 domain protein 1 (LASP1) was identified as a component of a six gene signature that is strongly predictive for disease progression and relapse in CML patients. However, the underlying mechanisms why LASP1 expression correlates with dismal outcome remained unresolved. Here, we identified LASP1 as a novel and overexpressed direct substrate of BCR-ABL in CML. We demonstrate that LASP1 is specifically phosphorylated by BCR-ABL at tyrosine-171 in CML patients, which is abolished by tyrosine kinase inhibitor therapy. Further studies revealed that LASP1 phosphorylation results in an association with CRKL - another specific BCR-ABL substrate and bona fide biomarker for BCR-ABL activity. pLASP1-Y171 binds to non-phosphorylated CRKL at its SH2 domain. Accordingly, the BCR-ABL-mediated pathophysiological hyper-phosphorylation of LASP1 in CML disrupts normal regulation of CRKL and LASP1, which likely has implications on downstream BCR-ABL signaling. Collectively, our results suggest that LASP1 phosphorylation might serve as an additional candidate biomarker for assessment of BCR-ABL activity and provide a first step toward a molecular understanding of LASP1 function in CML.
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40
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LASP-1: a nuclear hub for the UHRF1-DNMT1-G9a-Snail1 complex. Oncogene 2015; 35:1122-33. [PMID: 25982273 PMCID: PMC4651668 DOI: 10.1038/onc.2015.166] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 04/09/2015] [Accepted: 04/12/2015] [Indexed: 12/30/2022]
Abstract
Nuclear LASP-1 has a direct correlation with overall survival of breast cancer patients. In this study, immunohistochemical analysis of a human breast TMA showed that LASP-1 is absent in normal human breast epithelium but the expression increases with malignancy and is highly nuclear in aggressive breast cancer. We investigated whether the chemokines and growth factors present in the tumor microenvironment could trigger nuclear translocation of LASP-1.Treatment of human breast cancer cells with CXCL12, EGF and Heregulin and HMEC-CXCR2 cells with CXCL8 facilitated nuclear shuttling of LASP-1. Data from the biochemical analysis of the nuclear and cytosolic fractions further confirmed the nuclear translocation of LASP-1 upon chemokine and growth factor treatment. CXCL12-dependent nuclear import of LASP-1 could be blocked by CXCR4 antagonist, AMD-3100. Knock down of LASP-1 resulted in alterations in gene expression leading to an increased level of cell junction and extracellular matrix proteins and an altered cytokine secretory profile. Three dimensional cultures of human breast cancer cells on Matrigel revealed an altered colony growth, morphology and arborization pattern in LASP-1 knock down cells. Functional analysis of the LASP-1 knock down cells revealed increased adhesion to collagen IV and decreased invasion through the Matrigel. Proteomics analysis of immunoprecipitates of LASP-1 and subsequent validation approaches revealed that LASP-1associated with the epigenetic machinery especially UHRF1, DNMT1, G9a and the transcription factor Snail1. Interestingly, LASP-1 associated with UHRF1, G9a, Snail1 and di- and tri-methylated histoneH3 in a CXCL12-dependent manner based on immunoprecipitation and proximity ligation assays. LASP-1 also directly bound to Snail1 which may stabilize Snail1. Thus, nuclear LASP-1 appears to functionally serve as a hub for the epigenetic machinery.
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Hailer A, Grunewald TGP, Orth M, Reiss C, Kneitz B, Spahn M, Butt E. Loss of tumor suppressor mir-203 mediates overexpression of LIM and SH3 Protein 1 (LASP1) in high-risk prostate cancer thereby increasing cell proliferation and migration. Oncotarget 2015; 5:4144-4153. [PMID: 24980827 PMCID: PMC4147312 DOI: 10.18632/oncotarget.1928] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Several studies have linked overexpression of the LIM and SH3 domain protein 1 (LASP1) to progression of breast, colon, liver, and bladder cancer. However, its expression pattern and role in human prostate cancer (PCa) remained largely undefined. Analysis of published microarray data revealed a significant overexpression of LASP1 in PCa metastases compared to parental primary tumors and normal prostate epithelial cells. Subsequent gene-set enrichment analysis comparing LASP1-high and -low PCa identified an association of LASP1 with genes involved in locomotory behavior and chemokine signaling. These bioinformatic predictions were confirmed in vitro as the inducible short hairpin RNA-mediated LASP1 knockdown impaired migration and proliferation in LNCaP prostate cancer cells. By immunohistochemical staining and semi-quantitative image analysis of whole tissue sections we found an enhanced expression of LASP1 in primary PCa and lymph node metastases over benign prostatic hyperplasia. Strong cytosolic and nuclear LASP1 immunoreactivity correlated with PSA progression. Conversely, qRT-PCR analyses for mir-203, which is a known translational suppressor of LASP1 in matched RNA samples revealed an inverse correlation of LASP1 protein and mir-203 expression. Collectively, our results suggest that loss of mir-203 expression and thus uncontrolled LASP1 overexpression might drive progression of PCa.
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Affiliation(s)
- Amelie Hailer
- Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Wuerzburg, Grombuehlstrasse 12, 97080 Wuerzburg, Germany. These authors contributed equally to this work
| | - Thomas G P Grunewald
- INSERM Unit 830, Genetics and Biology of Cancers, Institute Curie Research Center, 26 rue d'Ulm, 75248 Paris, France. These authors contributed equally to this work
| | - Martin Orth
- Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Wuerzburg, Grombuehlstrasse 12, 97080 Wuerzburg, Germany. These authors contributed equally to this work
| | - Cora Reiss
- Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Wuerzburg, Grombuehlstrasse 12, 97080 Wuerzburg, Germany. These authors contributed equally to this work
| | - Burkhard Kneitz
- Urology and Pediatric Urology, University Clinic of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany
| | - Martin Spahn
- Urology and Pediatric Urology, University Clinic of Wuerzburg, Oberduerrbacher Strasse 6, 97080 Wuerzburg, Germany
| | - Elke Butt
- Institute for Clinical Biochemistry and Pathobiochemistry, University Clinic of Wuerzburg, Grombuehlstrasse 12, 97080 Wuerzburg, Germany. These authors contributed equally to this work
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Salvi A, Bongarzone I, Ferrari L, Abeni E, Arici B, De Bortoli M, Scuri S, Bonini D, Grossi I, Benetti A, Baiocchi G, Portolani N, De Petro G. Molecular characterization of LASP-1 expression reveals vimentin as its new partner in human hepatocellular carcinoma cells. Int J Oncol 2015; 46:1901-12. [PMID: 25760690 PMCID: PMC4383023 DOI: 10.3892/ijo.2015.2923] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 02/03/2015] [Indexed: 12/12/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the third most common cause of cancer-related mortality worldwide. We have previously reported that LASP-1 is a downstream protein of the urokinase type plasminogen activator (uPA). Here we investigated the role of LASP-1 in HCC by a molecular and biological characterization of LASP-1 expression in human HCC specimens and in cultured HCC cells. We determined the LASP-1 mRNA expression levels in 55 HCC cases with different hepatic background disease. We identified 3 groups of patients with high, equal or low LASP-1 mRNA levels in HCC tissues compared to the peritumoral (PT) tissues. In particular we found that i) the HCCs displayed a higher LASP-1 mRNA level in HCC compared to PT tissues; ii) the expression levels of LASP-1 mRNA in female HCCs were significantly higher compared to male HCCs; iii) the cirrhotic HCCs displayed a higher LASP-1 mRNA. Further, the biological characterization of the ectopic LASP-1 overexpression in HCC cells, using MALDI-TOF mass spectrometer on the LASP-1 co-immunoprecipitated fractions, displayed vimentin as a novel putative partner of LASP-1. Our results suggest that LASP-1 mRNA overexpression may be mainly implicated in female HCCs and cirrhotic HCCs; and that LASP1 may play its role with vimentin in HCC cells.
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Affiliation(s)
- Alessandro Salvi
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Italia Bongarzone
- Department of Experimental Oncology and Molecular Medicine, Proteomics Laboratory, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Lia Ferrari
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Edoardo Abeni
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Bruna Arici
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Maida De Bortoli
- Department of Experimental Oncology and Molecular Medicine, Proteomics Laboratory, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Sabrina Scuri
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Daniela Bonini
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Ilaria Grossi
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
| | - Anna Benetti
- Department of Clinical and Experimental Sciences, Division of Morbid Anatomy, University of Brescia, Brescia, Italy
| | - Gianluca Baiocchi
- Department of Clinical and Experimental Sciences, Surgical Clinic, University of Brescia, Brescia, Italy
| | - Nazario Portolani
- Department of Clinical and Experimental Sciences, Surgical Clinic, University of Brescia, Brescia, Italy
| | - Giuseppina De Petro
- Department of Molecular and Translational Medicine, Division of Biology and Genetics, University of Brescia, Brescia, Italy
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Yang F, Zhou X, Du S, Zhao Y, Ren W, Deng Q, Wang F, Yuan J. LIM and SH3 domain protein 1 (LASP-1) overexpression was associated with aggressive phenotype and poor prognosis in clear cell renal cell cancer. PLoS One 2014; 9:e100557. [PMID: 24955835 PMCID: PMC4067378 DOI: 10.1371/journal.pone.0100557] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 05/23/2014] [Indexed: 12/26/2022] Open
Abstract
Background LIM and SH3 protein 1 (LASP-1) is a specific focal adhesion protein that is known to be involved in numerous biological and pathological processes. LASP-1 overexpression has been described in several types of cancers, but its expression and role in clear cell renal cell cancer (ccRCC) remains unknown. Methods Using immunohistochemistry, we analyzed LASP-1 protein expression in 216 clinicopathologically characterized ccRCC cases. We also examined LASP-1 expression in 20 paired ccRCC tissues and in 2 cell lines by real-time PCR and Western blot. Using RNA interference, we investigated the effects of LASP-1 depletion on tumor cell behavior in vitro. Statistical analyses were used to determine the associations between LASP-1 levels, tumor features and patient outcomes. Results LASP-1 overexpression was observed in ccRCC tissues (P<0.0001) compared to adjuvant nontumorous tissues, and its expression levels were closely correlated with overall survival and recurrence-free survival (P = 0.044 and 0.006, respectively) in patients with ccRCC. RNA interference-mediated silencing of the LASP-1 gene in 786–0 ccRCC cells significantly inhibited cell migration. Conclusions The results of the present study indicate that LASP-1 may serve as a prognostic biomarker for ccRCC patients and may be a promising target for the treatment of ccRCC.
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MESH Headings
- Adaptor Proteins, Signal Transducing/genetics
- Adaptor Proteins, Signal Transducing/metabolism
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Blotting, Western
- Carcinoma, Renal Cell/metabolism
- Carcinoma, Renal Cell/mortality
- Carcinoma, Renal Cell/pathology
- Cell Movement
- Cell Proliferation
- Cytoskeletal Proteins/genetics
- Cytoskeletal Proteins/metabolism
- Female
- Follow-Up Studies
- Humans
- Immunoenzyme Techniques
- Kidney Neoplasms/metabolism
- Kidney Neoplasms/mortality
- Kidney Neoplasms/pathology
- LIM Domain Proteins/genetics
- LIM Domain Proteins/metabolism
- Male
- Middle Aged
- Neoplasm Grading
- Neoplasm Recurrence, Local/metabolism
- Neoplasm Recurrence, Local/mortality
- Neoplasm Recurrence, Local/pathology
- Neoplasm Staging
- Prognosis
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Survival Rate
- Tumor Cells, Cultured
- Young Adult
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Affiliation(s)
- Fan Yang
- Department of Urology Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xingchun Zhou
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Shuangkuan Du
- Department of Urology Surgery, Peoples' Hospital of Shaanxi Province, Xi'an, Shaanxi, China
| | - Yongjun Zhao
- Department of Urology Surgery, Peoples' Hospital of Shaanxi Province, Xi'an, Shaanxi, China
| | - Wei Ren
- Department of Urology Surgery, Peoples' Hospital of Shaanxi Province, Xi'an, Shaanxi, China
| | - Qian Deng
- Department of Urology Surgery, Peoples' Hospital of Shaanxi Province, Xi'an, Shaanxi, China
| | - Fuli Wang
- Department of Urology Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- * E-mail: (FW); (JY)
| | - Jianlin Yuan
- Department of Urology Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- * E-mail: (FW); (JY)
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Shimizu F, Shiiba M, Ogawara K, Kimura R, Minakawa Y, Baba T, Yokota S, Nakashima D, Higo M, Kasamatsu A, Sakamoto Y, Tanzawa H, Uzawa K. Overexpression of LIM and SH3 Protein 1 leading to accelerated G2/M phase transition contributes to enhanced tumourigenesis in oral cancer. PLoS One 2013; 8:e83187. [PMID: 24386158 PMCID: PMC3873298 DOI: 10.1371/journal.pone.0083187] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 11/11/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND LIM and SH3 protein 1 (LASP-1) is a specific focal adhesion protein involved in several malignant tumors. However, its role in oral squamous cell carcinoma (OSCC) is unknown. The aim of this study was to characterize the role and molecular status/mechanism of LASP-1 in OSCC. METHODS We evaluated LASP-1 mRNA and protein expressions in OSCC-derived cell lines and primary OSCCs. Using an shRNA system, we analyzed the effect of LASP-1 on the biology and function of the OSCC cell lines, HSC-3 and Ca9-22. The cells also were subcutaneously injected to evaluate tumor growth in vivo. Data were analyzed by the Fisher's exact test or the Mann-Whitney U test. Bonferroni correction was used for multiple testing. RESULTS Significant up-regulation of LASP-1 was detected in OSCC-derived cell lines (n = 7, P<0.007) and primary OSCCs (n = 50, P<0.001) compared to normal controls. LASP-1 knockdown cells significantly inhibited cellular proliferation compared with shMock-transfected cells (P<0.025) by arresting cell-cycle progression at the G2 phase. We observed dramatic reduction in the growth of shLASP-1 OSCC xenografts compared with shMock xenografts in vivo. CONCLUSION Our results suggested that overexpression of LASP-1 is linked closely to oral tumourigenicity and further provide novel evidence that LASP-1 plays an essential role in tumor cellular growth by mediating G2/M transition.
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Affiliation(s)
- Fumie Shimizu
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masashi Shiiba
- Department of Clinical Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Katsunori Ogawara
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
- * E-mail: (KO); (KU)
| | - Ryota Kimura
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasuyuki Minakawa
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takao Baba
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Satoshi Yokota
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Dai Nakashima
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Morihiro Higo
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Atsushi Kasamatsu
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Yosuke Sakamoto
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Hideki Tanzawa
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
| | - Katsuhiro Uzawa
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, Chiba, Japan
- * E-mail: (KO); (KU)
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Wang H, Li W, Jin X, Cui S, Zhao L. LIM and SH3 protein 1, a promoter of cell proliferation and migration, is a novel independent prognostic indicator in hepatocellular carcinoma. Eur J Cancer 2012; 49:974-83. [PMID: 23084841 DOI: 10.1016/j.ejca.2012.09.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Accepted: 09/23/2012] [Indexed: 12/30/2022]
Abstract
LIM and SH3 protein 1 (LASP-1) plays a significant role in the formation of several malignant tumours. However, the biological and clinical significances of LASP-1 in hepatocellular carcinoma (HCC) remain largely unknown. Using immunohistochemistry, we analysed LASP-1 expression in 144 clinicopathologically characterised HCC cases. Using gene and transfection and RNA interference, we investigated the effects of LASP-1 overexpression and depletion on tumour cellular behaviour in vitro. LASP-1 expression was detected in not only cytoplasm and but also nucleus of HCC and liver cells. The positive rates of both cytosolic and nuclear LASP-1 expression in HCC were higher than adjacent non-tumourous tissues. Statistical analysis showed that heterogeneous LASP-1 expression is associated with hepatitis B surface antigen (HBsAg) and serum alpha-fetoprotein (AFP) level of HCC patients. A significant trend was identified between cytosolic LASP-1 overexpression in HCC and worsening clinical prognosis. Multivariate survival analysis showed that cytosolic LASP-1 expression was recognised as an independent prognostic factor of patient's survival. In vitro study showed LASP-1 promoted cell proliferation and migration, and resulted in aggressive phenotypes of cancer cells. LASP-1 is a valuable marker of HCC progression. High cytosolic LASP-1 expression is associated with poor overall survival in HCC patients.
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Affiliation(s)
- Hui Wang
- Department of Medical Oncology, Affiliated Tumor Hospital of Guangzhou Medical College, Guangzhou, China
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Tang R, Kong F, Hu L, You H, Zhang P, Du W, Zheng K. Role of hepatitis B virus X protein in regulating LIM and SH3 protein 1 (LASP-1) expression to mediate proliferation and migration of hepatoma cells. Virol J 2012; 9:163. [PMID: 22897902 PMCID: PMC3459728 DOI: 10.1186/1743-422x-9-163] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Accepted: 07/10/2012] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Hepatitis B virus X protein (HBx) has been shown to be responsible for the development of hepatocellular carcinoma (HCC) caused by Hepatitis B virus infection. However, its potential effect on the progression of hepatocellular carcinoma remains yet unclear. LIM and SH3 protein 1 (LASP-1), a focal adhesion protein, is expressed in an up-regulation manner in the HCC tissues. LASP-1 plays an important role in the regulation of proliferation and migration of HCC. In this study, we investigated the effect of LASP-1 involved in HBx-related tumor progression. METHODS LASP-1 levels in the HBx stable transfected HepG2 and Huh-7 cells were detected by RT-PCR and western blot analysis. The cellular localization of LASP-1 was assessed by immunofluorescence analysis. The activity of phosphatidylinositol 3-kinase (PI3-K) pathway was demonstrated by western blot assay. The HBx-expressing cells were transfected with specific small interference RNA (siRNA) against LASP-1. The proliferation and migration ability of cells were evaluated by cell viability assay and plate clone formation assay. The migration ability of cells was detected by transwell assay and wound healing assay. RESULTS RT-PCR and western blot analysis indicated the expression of LASP-1 was increased in the stable HBx-expressing cells compared with the control cells. Immunofluorescence study revealed that the distributions of LASP-1 in HepG2-HBX cells were mainly in pseudopods and the cytoplasm while they were mainly localized in the cytoplasm of HepG2-Mock cells. The cellular localizations of LASP-1 in Huh-7-HBX cells were in the perinuclear fractions while they were mainly localized in the cytoplasm of Huh-7-Mock cells. The upregulation of LASP-1 was inhibited after treatment with LY294002, PI3-K pathway inhibitor. Overexpression of LASP-1 in the stable HBx-expressing cells enhanced the proliferation and migration ability of hepatocellular cells. siRNA-mediated LASP-1 knowdown in the stable HBx-expressing cells significantly suppressed hepatocellular cells proliferation and migration. CONCLUSIONS These results demonstrated that HBx could upregulate LASP-1 through PI3-K pathway to promote the proliferation and migration of hepatoma cells.
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Affiliation(s)
- Renxian Tang
- Department of Pathogenic biology and Laboratory of Infection and Immunology, Xuzhou Medical College, 84 West Huaihai Road, Xuzhou 221002, Jiangsu Province, China
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Grunewald TGP, Ranft A, Esposito I, da Silva-Buttkus P, Aichler M, Baumhoer D, Schaefer KL, Ottaviano L, Poremba C, Jundt G, Jürgens H, Dirksen U, Richter GHS, Burdach S. High STEAP1 expression is associated with improved outcome of Ewing's sarcoma patients. Ann Oncol 2012; 23:2185-2190. [PMID: 22317770 DOI: 10.1093/annonc/mdr605] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Ewing's sarcoma (ES) is the second most common bone or soft-tissue sarcoma in childhood and adolescence and features a high propensity to metastasize. The six-transmembrane epithelial antigen of the prostate 1 (STEAP1) is a membrane-bound mesenchymal stem cell marker highly expressed in ES. Here, we investigated the role of STEAP1 as an immunohistological marker for outcome prediction in patients with ES. PATIENTS AND METHODS Membranous STEAP1 immunoreactivity was analyzed using immunohistochemistry in 114 primary pre-chemotherapy ES of patients diagnosed from 1983 to 2010 and compared with clinical parameters and patient outcome. Median follow-up was 3.85 years (range 0.43-17.51). RESULTS A total of 62.3% of the ES samples displayed detectable STEAP1 expression with predominant localization of the protein at the plasma membrane. High membranous STEAP1 immunoreactivity was found in 53.5%, which correlated with better overall survival (P=0.021). Accordingly, no or low membranous STEAP1 expression was identified as an independent risk factor in multivariate analysis (hazard ratio 2.65, P=0.036). CONCLUSION High membranous STEAP1 expression predicts improved outcome and may help to define a specific subgroup of ES patients, who might benefit from adapted therapy regimens.
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Affiliation(s)
- T G P Grunewald
- Children's Cancer Research and Roman Herzog Comprehensive Cancer Center, Laboratory of Functional Genomics and Transplantation Biology, Klinikum rechts der Isar, Technische Universität München, Munich; Medical Life Science and Technology Center, TUM Graduate School, Technische Universität München, Garching.
| | - A Ranft
- Department of Pediatric Hematology and Oncology, University Hospital Münster, Münster
| | - I Esposito
- Institute of Pathology, Klinikum rechts der Isar, Technische Universität München, Munich; Institute of Pathology, Helmholtz-Zentrum München, Neuherberg, Germany
| | | | - M Aichler
- Institute of Pathology, Helmholtz-Zentrum München, Neuherberg, Germany
| | - D Baumhoer
- Bone Tumor Reference Center at the Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - K L Schaefer
- Institute of Pathology, Heinrich-Heine-University, Düsseldorf
| | - L Ottaviano
- Institute of Pathology, Heinrich-Heine-University, Düsseldorf
| | - C Poremba
- Institute of Pathology, Heinrich-Heine-University, Düsseldorf; Center of Histopathology, Cytology, and Molecular Diagnostics (CHCMD), Trier, Germany
| | - G Jundt
- Bone Tumor Reference Center at the Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - H Jürgens
- Department of Pediatric Hematology and Oncology, University Hospital Münster, Münster
| | - U Dirksen
- Department of Pediatric Hematology and Oncology, University Hospital Münster, Münster
| | - G H S Richter
- Children's Cancer Research and Roman Herzog Comprehensive Cancer Center, Laboratory of Functional Genomics and Transplantation Biology, Klinikum rechts der Isar, Technische Universität München, Munich
| | - S Burdach
- Children's Cancer Research and Roman Herzog Comprehensive Cancer Center, Laboratory of Functional Genomics and Transplantation Biology, Klinikum rechts der Isar, Technische Universität München, Munich
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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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Ardelt P, Grünemay N, Strehl A, Jilg C, Miernik A, Kneitz B, Butt E. LASP-1, a novel urinary marker for detection of bladder cancer. Urol Oncol 2012; 31:1591-8. [PMID: 22481019 DOI: 10.1016/j.urolonc.2012.02.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2011] [Revised: 02/02/2012] [Accepted: 02/02/2012] [Indexed: 12/28/2022]
Abstract
OBJECTIVES The LIM and SH3 (LASP)-1 protein is a focal adhesion protein that has been linked to oncogenesis. The aim of this study was to evaluate the diagnostic use of the detection of LASP-1 in tumor specimens and in urine for noninvasive detection of transitional cell carcinoma (TCC). MATERIALS AND METHODS Immunohistochemical staining for LASP-1 was performed on 72 archived bladder tumor specimens, and LASP-1 content was measured in 132 spontaneous urine sample sediments by Western blot analysis. RESULTS In the histologic specimens, immunohistochemical staining for LASP-1 showed abundant expression throughout the urothelium of the bladder and ureter. However, modest overexpression of LASP-1 was observed in the TCC specimens. Measurement of the LASP-1 protein concentrations in urinary cell pellets from healthy donors and bladder cancer patients was highly sensitive for the presence of TCC. The cut-off value was determined by receiver operating characteristic (ROC) analysis. When a cut-off value of 1 ng LASP-1/500 μl of urine was used, the sensitivity, specificity, and positive and negative predictive values of the assay were 83.1%, 85.3%, 83.1%, and 80.6%, respectively.The increased urinary LASP-1 content in TCC patients was attributable in part to a specific increase in cell shedding presumably caused by changes in cell adhesion, as confirmed by LASP-1 knockdown. Contamination with erythrocytes above 250 cells/μl and urinary infection gave false positive results and are therefore sample exclusion criteria. CONCLUSIONS In the absence of urinary infection or gross hematuria, urinary LASP-1 level is a promising marker for transitional cell carcinoma.
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Affiliation(s)
- Peter Ardelt
- Department of Urology, Albert Ludwig University of Freiburg Medical School, Freiburg, Germany.
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Abstract
Integrating signals from the ECM (extracellular matrix) via the cell surface into the nucleus is an essential feature of multicellular life and often malfunctions in cancer. To date many signal transducers known as shuttle proteins have been identified that act as both: a cytoskeletal and a signalling protein. Here, we highlight the interesting member of the Zyxin family TRIP6 [thyroid receptor interactor protein 6; also designated ZRP-1 (zyxin-related protein 1)] and review current literature to define its role in cell physiology and cancer. TRIP6 is a versatile scaffolding protein at FAs (focal adhesions) involved in cytoskeletal organization, coordinated cell migration and tissue invasion. Via its LIM and TDC domains TRIP6 interacts with different components of the LPA (lysophosphatidic acid), NF-κB (nuclear factor κB), glucocorticoid and AMPK (AMP-activated protein kinase) signalling pathway and thereby modulates their activity. Within the nucleus TRIP6 acts as a transcriptional cofactor regulating the transcriptional responses of these pathways. Moreover, intranuclear TRIP6 associates with proteins ensuring telomere protection and hence may contribute to genome stability. Accordingly, TRIP6 is engaged in key cellular processes such as cell proliferation, differentiation and survival. These diverse functions of TRIP6 are found to be dysregulated in various cancers and may have pleiotropic roles in tumour initiation, tumour growth and metastasis, which turn TRIP6 into an attractive candidate for cancer diagnosis and targeted therapy.
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