1
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Timmins LR, Ortiz-Silva M, Joshi B, Li YL, Dickson FH, Wong TH, Vandevoorde KR, Nabi IR. Caveolin-1 promotes mitochondrial health and limits mitochondrial ROS through ROCK/AMPK regulation of basal mitophagic flux. FASEB J 2024; 38:e23343. [PMID: 38071602 DOI: 10.1096/fj.202201872rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 11/09/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023]
Abstract
Caveolin-1 (CAV1), the main structural component of caveolae, is phosphorylated at tyrosine-14 (pCAV1), regulates signal transduction, mechanotransduction, and mitochondrial function, and plays contrasting roles in cancer progression. We report that CRISPR/Cas9 knockout (KO) of CAV1 increases mitochondrial oxidative phosphorylation, increases mitochondrial potential, and reduces ROS in MDA-MB-231 triple-negative breast cancer cells. Supporting a role for pCAV1, these effects are reversed upon expression of CAV1 phosphomimetic CAV1 Y14D but not non-phosphorylatable CAV1 Y14F. pCAV1 is a known effector of Rho-associated kinase (ROCK) signaling and ROCK1/2 signaling mediates CAV1 promotion of increased mitochondrial potential and decreased ROS production in MDA-MB-231 cells. CAV1/ROCK control of mitochondrial potential and ROS is caveolae-independent as similar results were observed in PC3 prostate cancer cells lacking caveolae. Increased mitochondrial health and reduced ROS in CAV1 KO MDA-MB-231 cells were reversed by knockdown of the autophagy protein ATG5, mitophagy regulator PINK1 or the mitochondrial fission protein Drp1 and therefore due to mitophagy. Use of the mitoKeima mitophagy probe confirmed that CAV1 signaling through ROCK inhibited basal mitophagic flux. Activation of AMPK, a major mitochondrial homeostasis protein inhibited by ROCK, is inhibited by CAV1-ROCK signaling and mediates the increased mitochondrial potential, decreased ROS, and decreased basal mitophagy flux observed in wild-type MDA-MB-231 cells. CAV1 regulation of mitochondrial health and ROS in cancer cells therefore occurs via ROCK-dependent inhibition of AMPK. This study therefore links pCAV1 signaling activity at the plasma membrane with its regulation of mitochondrial activity and cancer cell metabolism through control of mitophagy.
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Affiliation(s)
- Logan R Timmins
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Milene Ortiz-Silva
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Bharat Joshi
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Y Lydia Li
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Fiona H Dickson
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Timothy H Wong
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kurt R Vandevoorde
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ivan R Nabi
- Department of Cellular & Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
- School of Biomedical Engineering, University of British Columbia, Vancouver, British Columbia, Canada
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2
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Mutch NJ, Medcalf RL. The fibrinolysis renaissance. J Thromb Haemost 2023; 21:3304-3316. [PMID: 38000850 DOI: 10.1016/j.jtha.2023.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/13/2023] [Accepted: 09/13/2023] [Indexed: 11/26/2023]
Abstract
Fibrinolysis is the system primarily responsible for removal of fibrin deposits and blood clots in the vasculature. The terminal enzyme in the pathway, plasmin, is formed from its circulating precursor, plasminogen. Fibrin is by far the most legendary substrate, but plasmin is notoriously prolific and is known to cleave many other proteins and participate in the activation of other proteolytic systems. Fibrinolysis is often overshadowed by the coagulation system and viewed as a simplistic poorer relation. However, the primordial plasminogen activators evolved alongside the complement system, approximately 70 million years before coagulation saw the light of day. It is highly likely that the plasminogen activation system evolved with its roots in primordial immunity. Almost all immune cells harbor at least one of a dozen plasminogen receptors that allow plasmin formation on the cell surface that in turn modulates immune cell behavior. Similarly, numerous pathogens express their own plasminogen activators or contain surface proteins that provide binding sites for host plasminogen. The fibrinolytic system has been harnessed for clinical medicine for many decades with the development of thrombolytic drugs and antifibrinolytic agents. Our refined understanding and appreciation of the fibrinolytic system and its alliance with infection and immunity and beyond are paving the way for new developments and interest in novel therapeutics and applications. One must ponder as to whether the nomenclature of the system hampered our understanding, by focusing on fibrin, rather than the complex myriad of interactions and substrates of the plasminogen activation system.
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Affiliation(s)
- Nicola J Mutch
- Aberdeen Cardiovascular & Diabetes Centre, Institute of Medical Sciences, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Foresterhill, Aberdeen, UK.
| | - Robert L Medcalf
- Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, Victoria, Australia
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3
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Park SC, Lee YS, Cho KA, Kim SY, Lee YI, Lee SR, Lim IK. What matters in aging is signaling for responsiveness. Pharmacol Ther 2023; 252:108560. [PMID: 37952903 DOI: 10.1016/j.pharmthera.2023.108560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 10/03/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
Biological responsiveness refers to the capacity of living organisms to adapt to changes in both their internal and external environments through physiological and behavioral mechanisms. One of the prominent aspects of aging is the decline in this responsiveness, which can lead to a deterioration in the processes required for maintenance, survival, and growth. The vital link between physiological responsiveness and the essential life processes lies within the signaling systems. To devise effective strategies for controlling the aging process, a comprehensive reevaluation of this connecting loop is imperative. This review aims to explore the impact of aging on signaling systems responsible for responsiveness and introduce a novel perspective on intervening in the aging process by restoring the compromised responsiveness. These innovative mechanistic approaches for modulating altered responsiveness hold the potential to illuminate the development of action plans aimed at controlling the aging process and treating age-related disorders.
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Affiliation(s)
- Sang Chul Park
- The Future Life & Society Research Center, Advanced Institute of Aging Science, Chonnam National University, Gwangju 61469, Republic of Korea.
| | - Young-Sam Lee
- Department of New Biology, DGIST, Daegu 42988, Republic of Korea; Well Aging Research Center, Division of Biotechnology, DGIST, Daegu 42988, Republic of Korea.
| | - Kyung A Cho
- Department of Biochemistry, Chonnam National University Medical School, Jeollanam-do 58128, Republic of Korea
| | - Sung Young Kim
- Department of Biochemistry, Konkuk University School of Medicine, Seoul 05029, Republic of Korea
| | - Yun-Il Lee
- Well Aging Research Center, Division of Biotechnology, DGIST, Daegu 42988, Republic of Korea; Interdisciplinary Engineering Major, Department of Interdisciplinary Studies, DGIST, Daegu 42988, Republic of Korea
| | - Seung-Rock Lee
- Department of Biochemistry, Chonnam National University Medical School, Jeollanam-do 58128, Republic of Korea; Department of Biomedical Sciences, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - In Kyoung Lim
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
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4
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Park H, Shin JA, Lim J, Lee S, Ahn JH, Kang JL, Choi YH. Increased Caveolin-2 Expression in Brain Endothelial Cells Promotes Age-Related Neuroinflammation. Mol Cells 2022; 45:950-962. [PMID: 36572563 PMCID: PMC9794556 DOI: 10.14348/molcells.2022.0045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 08/30/2022] [Accepted: 10/12/2022] [Indexed: 12/28/2022] Open
Abstract
Aging is a major risk factor for common neurodegenerative diseases. Although multiple molecular, cellular, structural, and functional changes occur in the brain during aging, the involvement of caveolin-2 (Cav-2) in brain ageing remains unknown. We investigated Cav-2 expression in brains of aged mice and its effects on endothelial cells. The human umbilical vein endothelial cells (HUVECs) showed decreased THP-1 adhesion and infiltration when treated with Cav-2 siRNA compared to control siRNA. In contrast, Cav-2 overexpression increased THP-1 adhesion and infiltration in HUVECs. Increased expression of Cav-2 and iba-1 was observed in brains of old mice. Moreover, there were fewer iba-1-positive cells in the brains of aged Cav-2 knockout (KO) mice than of wild-type aged mice. The levels of several chemokines were higher in brains of aged wild-type mice than in young wild-type mice; moreover, chemokine levels were significantly lower in brains of young mice as well as aged Cav-2 KO mice than in their wild-type counterparts. Expression of PECAM1 and VE-cadherin proteins increased in brains of old wild-type mice but was barely detected in brains of young wild-type and Cav-2 KO mice. Collectively, our results suggest that Cav-2 expression increases in the endothelial cells of aged brain, and promotes leukocyte infiltration and age-associated neuroinflammation.
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Affiliation(s)
- Hyunju Park
- Department of Physiology, Inflammation-Cancer Microenvironment Research Center, Seoul 07804, Korea
| | - Jung A Shin
- Department of Anatomy, Ewha Womans University College of Medicine, Seoul 07804, Korea
| | - Jiwoo Lim
- Department of Physiology, Inflammation-Cancer Microenvironment Research Center, Seoul 07804, Korea
| | - Seulgi Lee
- Department of Physiology, Inflammation-Cancer Microenvironment Research Center, Seoul 07804, Korea
| | - Jung-Hyuck Ahn
- Department of Biochemistry, Ewha Womans University College of Medicine, Seoul 07804, Korea
| | - Jihee Lee Kang
- Department of Physiology, Inflammation-Cancer Microenvironment Research Center, Seoul 07804, Korea
| | - Youn-Hee Choi
- Department of Physiology, Inflammation-Cancer Microenvironment Research Center, Seoul 07804, Korea
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Nakagawa K, Nagano T, Katasho R, Iwasaki T, Kamada S. Integrin β1 transduces the signal for LY6D-induced macropinocytosis and mediates senescence-inducing stress-evoked vacuole formation via FAK. FEBS Lett 2022; 596:2768-2780. [PMID: 35999651 DOI: 10.1002/1873-3468.14477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 07/12/2022] [Accepted: 07/18/2022] [Indexed: 11/07/2022]
Abstract
Cellular senescence is a highly stable cell cycle arrest induced by DNA damage and various cellular stresses. Recently, we have revealed that lymphocyte antigen 6 complex, locus D (LY6D) is responsible for senescence-inducing stress-evoked vacuole formation through induction of Src family kinase (SFK)-mediated macropinocytosis. However, the signaling molecule(s) transducing the macropinocytosis signal from extracellular LY6D to the cytoplasmic SFK are unknown. In this study, we identified integrin β1, a transmembrane signaling protein, as an interactor of LY6D by proteomic analysis and co-immunoprecipitation assays. Inhibition of integrin β1 impaired LY6D-induced macropinocytosis, and integrin β1 activated SFK through focal adhesion kinase to mediate macropinocytosis. These results indicate that integrin β1 is a crucial mediator of the LY6D-induced vacuole formation in senescent cells.
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Affiliation(s)
- Keitaro Nakagawa
- Department of Biology, Graduate School of Science, Kobe University, Japan
| | - Taiki Nagano
- Biosignal Research Center, Kobe University, Japan
| | - Ryoko Katasho
- Department of Biology, Graduate School of Science, Kobe University, Japan
| | - Tetsushi Iwasaki
- Department of Biology, Graduate School of Science, Kobe University, Japan
- Biosignal Research Center, Kobe University, Japan
| | - Shinji Kamada
- Department of Biology, Graduate School of Science, Kobe University, Japan
- Biosignal Research Center, Kobe University, Japan
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6
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Shin EY, Soung NK, Schwartz MA, Kim EG. Altered endocytosis in cellular senescence. Ageing Res Rev 2021; 68:101332. [PMID: 33753287 PMCID: PMC8131247 DOI: 10.1016/j.arr.2021.101332] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/02/2021] [Accepted: 03/15/2021] [Indexed: 01/10/2023]
Abstract
Cellular senescence occurs in response to diverse stresses (e.g., telomere shortening, DNA damage, oxidative stress, oncogene activation). A growing body of evidence indicates that alterations in multiple components of endocytic pathways contribute to cellular senescence. Clathrin-mediated endocytosis (CME) and caveolae-mediated endocytosis (CavME) represent major types of endocytosis that are implicated in senescence. More recent research has also identified a chromatin modifier and tumor suppressor that contributes to the induction of senescence via altered endocytosis. Here, molecular regulators of aberrant endocytosis-induced senescence are reviewed and discussed in the context of their capacity to serve as senescence-inducing stressors or modifiers.
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Affiliation(s)
- Eun-Young Shin
- Department of Biochemistry, Chungbuk National University College of Medicine, Cheongju, 28644, South Korea
| | - Nak-Kyun Soung
- World Class Institute, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Ochang-eup, Cheongju, 28116, South Korea
| | - Martin Alexander Schwartz
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, And Department of Cell Biology, Yale University School of Medicine, New Haven, CT, 06511, USA; Wellcome Trust Centre for Cell-matrix Research, University of Manchester, Manchester, UK.
| | - Eung-Gook Kim
- Department of Biochemistry, Chungbuk National University College of Medicine, Cheongju, 28644, South Korea.
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7
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Huang SS, Liao WY, Hsu CC, Chan TS, Liao TY, Yang PM, Chen LT, Sung SY, Tsai KK. A Novel Invadopodia-Specific Marker for Invasive and Pro-Metastatic Cancer Stem Cells. Front Oncol 2021; 11:638311. [PMID: 34136381 PMCID: PMC8200852 DOI: 10.3389/fonc.2021.638311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 05/03/2021] [Indexed: 12/30/2022] Open
Abstract
Introduction Stem-like cancer cells or cancer stem cells (CSCs) may comprise a phenotypically and functionally heterogeneous subset of cells, whereas the molecular markers reflecting this CSC hierarchy remain elusive. The glycolytic enzyme alpha-enolase (ENO1) present on the surface of malignant tumor cells has been identified as a metastasis-promoting factor through its function of activating plasminogen. The expression pattern of surface ENO1 (sENO1) concerning cell-to-cell or CSC heterogeneity and its functional roles await further investigation. Methods The cell-to-cell expression heterogeneity of sENO1 was profiled in malignant cells from different types of cancers using flow cytometry. The subcellular localization of sENO1 and its functional roles in the invadopodia formation and cancer cell invasiveness were investigated using a series of imaging, molecular, and in vitro and in vivo functional studies. Results We showed here that ENO1 is specifically localized to the invadopodial surface of a significant subset (11.1%-63.9%) of CSCs in human gastric and prostate adenocarcinomas. sENO1+ CSCs have stronger mesenchymal properties than their sENO1- counterparts. The subsequent functional studies confirmed the remarkable pro-invasive and pro-metastatic capacities of sENO1+ CSCs. Mechanistically, inhibiting the surface localization of ENO1 by downregulating caveolin-1 expression compromised invadopodia biogenesis, proteolysis, and CSC invasiveness. Conclusions Our study identified the specific expression of ENO1 on the invadopodial surface of a subset of highly invasive and pro-metastatic CSCs. sENO1 may provide a diagnostically and/or therapeutically exploitable target to improve the outcome of patients with aggressive and metastatic cancers.
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Affiliation(s)
- Shenq-Shyang Huang
- Graduate Program of Biotechnology in Medicine, Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan.,Laboratory of Advanced Molecular Therapeutics, Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan
| | - Wen-Ying Liao
- Laboratory of Advanced Molecular Therapeutics, Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan
| | - Chung-Chi Hsu
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung City, Taiwan
| | - Tze-Sian Chan
- Laboratory of Advanced Molecular Therapeutics, Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan.,Division of Gastroenterology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei City, Taiwan.,Integrated Therapy Center for Gastroenterological Cancers, Wan Fang Hospital, Taipei Medical University, Taipei City, Taiwan
| | - Tai-Yan Liao
- Laboratory of Advanced Molecular Therapeutics, Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan
| | - Pei-Ming Yang
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Li-Tzong Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan City, Taiwan.,Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - Shian-Ying Sung
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei City, Taiwan
| | - Kelvin K Tsai
- Laboratory of Advanced Molecular Therapeutics, Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan.,Division of Gastroenterology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei City, Taiwan.,Integrated Therapy Center for Gastroenterological Cancers, Wan Fang Hospital, Taipei Medical University, Taipei City, Taiwan.,National Institute of Cancer Research, National Health Research Institutes, Tainan City, Taiwan.,Clinical Research Center, Wan Fang Hospital, Taipei Medical University, Taipei City, Taiwan.,Taipei Medical University (TMU) and Affiliated Hospitals Pancreatic Cancer Groups, Taipei Medical University, Taipei City, Taiwan
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8
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Napolitano F, Montuori N. The Role of the Plasminogen Activation System in Angioedema: Novel Insights on the Pathogenesis. J Clin Med 2021; 10:518. [PMID: 33535668 PMCID: PMC7867209 DOI: 10.3390/jcm10030518] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/22/2021] [Accepted: 01/28/2021] [Indexed: 12/21/2022] Open
Abstract
The main physiological functions of plasmin, the active form of its proenzyme plasminogen, are blood clot fibrinolysis and restoration of normal blood flow. The plasminogen activation (PA) system includes urokinase-type plasminogen activator (uPA), tissue-type PA (tPA), and two types of plasminogen activator inhibitors (PAI-1 and PAI-2). In addition to the regulation of fibrinolysis, the PA system plays an important role in other biological processes, which include degradation of extracellular matrix such as embryogenesis, cell migration, tissue remodeling, wound healing, angiogenesis, inflammation, and immune response. Recently, the link between PA system and angioedema has been a subject of scientific debate. Angioedema is defined as localized and self-limiting edema of subcutaneous and submucosal tissues, mediated by bradykinin and mast cell mediators. Different forms of angioedema are linked to uncontrolled activation of coagulation and fibrinolysis systems. Moreover, plasmin itself can induce a potentiation of bradykinin production with consequent swelling episodes. The number of studies investigating the PA system involvement in angioedema has grown in recent years, highlighting its relevance in etiopathogenesis. In this review, we present the components and diverse functions of the PA system in physiology and its importance in angioedema pathogenesis.
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Affiliation(s)
| | - Nunzia Montuori
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, 80135 Naples, Italy;
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9
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Membrane dynamics in cell migration. Essays Biochem 2020; 63:469-482. [PMID: 31350382 DOI: 10.1042/ebc20190014] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/27/2019] [Accepted: 07/11/2019] [Indexed: 12/20/2022]
Abstract
Migration of cells is required in multiple tissue-level processes, such as in inflammation or cancer metastasis. Endocytosis is an extremely regulated cellular process by which cells uptake extracellular molecules or internalise cell surface receptors. While the role of endocytosis of focal adhesions (FA) and plasma membrane (PM) turnover at the leading edge of migratory cells is wide known, the contribution of endocytic proteins per se in migration has been frequently disregarded. In this review, we describe the novel functions of the most well-known endocytic proteins in cancer cell migration, focusing on clathrin, caveolin, flotillins and GRAF1. In addition, we highlight the relevance of the macropinocytic pathway in amoeboid-like cell migration.
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10
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Egger AN, Rajabi‐Estarabadi A, Williams NM, Resnik SR, Fox JD, Wong LL, Jozic I. The importance of caveolins and caveolae to dermatology: Lessons from the caves and beyond. Exp Dermatol 2020; 29:136-148. [PMID: 31845391 PMCID: PMC7028117 DOI: 10.1111/exd.14068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 12/15/2022]
Abstract
Caveolae are flask-shaped invaginations of the cell membrane rich in cholesterol and sphingomyelin, with caveolin proteins acting as their primary structural components that allow compartmentalization and orchestration of various signalling molecules. In this review, we discuss how pleiotropic functions of caveolin-1 (Cav1) and its intricate roles in numerous cellular functions including lipid trafficking, signalling, cell migration and proliferation, as well as cellular senescence, infection and inflammation, are integral for normal development and functioning of skin and its appendages. We then examine how disruption of the homeostatic levels of Cav1 can lead to development of various cutaneous pathophysiologies including skin cancers, cutaneous fibroses, psoriasis, alopecia, age-related changes in skin and aberrant wound healing and propose how levels of Cav1 may have theragnostic value in skin physiology/pathophysiology.
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Affiliation(s)
- Andjela N. Egger
- Wound Healing and Regenerative Medicine Research ProgramDr. Phillip Frost Department of Dermatology and Cutaneous SurgeryUniversity of Miami Miller School of MedicineMiamiFLUSA
| | - Ali Rajabi‐Estarabadi
- Wound Healing and Regenerative Medicine Research ProgramDr. Phillip Frost Department of Dermatology and Cutaneous SurgeryUniversity of Miami Miller School of MedicineMiamiFLUSA
| | - Natalie M. Williams
- Wound Healing and Regenerative Medicine Research ProgramDr. Phillip Frost Department of Dermatology and Cutaneous SurgeryUniversity of Miami Miller School of MedicineMiamiFLUSA
| | - Sydney R. Resnik
- Wound Healing and Regenerative Medicine Research ProgramDr. Phillip Frost Department of Dermatology and Cutaneous SurgeryUniversity of Miami Miller School of MedicineMiamiFLUSA
| | - Joshua D. Fox
- Wound Healing and Regenerative Medicine Research ProgramDr. Phillip Frost Department of Dermatology and Cutaneous SurgeryUniversity of Miami Miller School of MedicineMiamiFLUSA
| | - Lulu L. Wong
- Wound Healing and Regenerative Medicine Research ProgramDr. Phillip Frost Department of Dermatology and Cutaneous SurgeryUniversity of Miami Miller School of MedicineMiamiFLUSA
| | - Ivan Jozic
- Wound Healing and Regenerative Medicine Research ProgramDr. Phillip Frost Department of Dermatology and Cutaneous SurgeryUniversity of Miami Miller School of MedicineMiamiFLUSA
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11
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Cell Intrinsic and Extrinsic Mechanisms of Caveolin-1-Enhanced Metastasis. Biomolecules 2019; 9:biom9080314. [PMID: 31362353 PMCID: PMC6723107 DOI: 10.3390/biom9080314] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/17/2019] [Accepted: 07/25/2019] [Indexed: 12/19/2022] Open
Abstract
Caveolin-1 (CAV1) is a scaffolding protein with a controversial role in cancer. This review will initially discuss earlier studies focused on the role as a tumor suppressor before elaborating subsequently on those relating to function of the protein as a promoter of metastasis. Different mechanisms are summarized illustrating how CAV1 promotes such traits upon expression in cancer cells (intrinsic mechanisms). More recently, it has become apparent that CAV1 is also a secreted protein that can be included into exosomes where it plays a significant role in determining cargo composition. Thus, we will also discuss how CAV1 containing exosomes from metastatic cells promote malignant traits in more benign recipient cells (extrinsic mechanisms). This ability appears, at least in part, attributable to the transfer of specific cargos present due to CAV1 rather than the transfer of CAV1 itself. The evolution of how our perception of CAV1 function has changed since its discovery is summarized graphically in a time line figure.
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12
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Kim T, Lei L, Seong J, Suh J, Jang Y, Jung SH, Sun J, Kim D, Wang Y. Matrix Rigidity-Dependent Regulation of Ca 2+ at Plasma Membrane Microdomains by FAK Visualized by Fluorescence Resonance Energy Transfer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801290. [PMID: 30828523 PMCID: PMC6382294 DOI: 10.1002/advs.201801290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/20/2018] [Indexed: 05/13/2023]
Abstract
The dynamic regulation of signal transduction at plasma membrane microdomains remains poorly understood due to limitations in current experimental approaches. Genetically encoded biosensors based on fluorescent resonance energy transfer (FRET) can provide high spatiotemporal resolution for imaging cell signaling networks. Here, distinctive regulation of focal adhesion kinase (FAK) and Ca2+ signals are visualized at different membrane microdomains by FRET using membrane-targeting biosensors. It is shown that rigidity-dependent FAK and Ca2+ signals in human mesenchymal stem cells (hMSCs) are selectively activated at detergent-resistant membrane (DRM or rafts) microdomains during the cell-matrix adhesion process, with minimal activities at non-DRM domains. The rigidity-dependent Ca2+ signal at the DRM microdomains is downregulated by either FAK inhibition or lipid raft disruption, suggesting that FAK and lipid raft integrity mediate the in situ Ca2+ activation. It is further revealed that transient receptor potential subfamily M7 (TRPM7) participates in the mobilization of Ca2+ signals within DRM regions. Thus, the findings provide insights into the underlying mechanisms that regulate Ca2+ and FAK signals in hMSCs under different mechanical microenvironments.
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Affiliation(s)
- Tae‐Jin Kim
- Neuroscience Program and the Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
- Department of Bioengineering and Institute of Stem Cell and Regenerative MedicineUniversity of WashingtonSeattleWA98195USA
- Department of Biological SciencesIntegrated Biological Scienceand Institute of Systems BiologyPusan National UniversityPusan46241Republic of Korea
| | - Lei Lei
- Department of BioengineeringInstitute of Engineering in MedicineUniversity of California at San DiegoLa JollaCA92093USA
| | - Jihye Seong
- Neuroscience Program and the Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
- Convergence Research Center for Diagnosis Treatment Care of DementiaKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Jung‐Soo Suh
- Department of Integrated Biological SciencePusan National UniversityPusan46241Republic of Korea
| | - Yoon‐Kwan Jang
- Department of Integrated Biological SciencePusan National UniversityPusan46241Republic of Korea
| | - Sang Hoon Jung
- Natural Products Research CenterKorea Institute of Science and Technology (KIST)Gangneung25451Republic of Korea
| | - Jie Sun
- Department of Cell Biology and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhou310058China
- Institute of HematologyZhejiang University and Zhejiang Engineering Laboratory for Stem Cell and ImmunotherapyHangzhou310058China
| | - Deok‐Ho Kim
- Department of Bioengineering and Institute of Stem Cell and Regenerative MedicineUniversity of WashingtonSeattleWA98195USA
| | - Yingxiao Wang
- Neuroscience Program and the Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
- Department of BioengineeringInstitute of Engineering in MedicineUniversity of California at San DiegoLa JollaCA92093USA
- Department of BioengineeringUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
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13
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Bauer J, Cohly HHP, Sahana J, Grimm D. Preparative enrichment of human tissue cells capable to change a site of growth in vitro or in vivo - Recent developments. Prep Biochem Biotechnol 2018; 48:954-960. [PMID: 30395783 DOI: 10.1080/10826068.2018.1525567] [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: 12/30/2022]
Abstract
Human cells are heterogeneous in regard to their biochemical features and functions. Detailed knowledge about each single cell type is important to understand the whole organism. In order to get a deeper insight in the concert of life, it has to be considered that cell populations such as thyroid cells, epithelial breast cells, endothelial cells, or chondrocytes are heterogeneous in regard to function, RNA expression patterns and protein content. This is true for normal cells and even more relevant for cancer cells. A number of sophisticated methods were developed to enrich cohorts of cells generally belonging to a defined type but outstanding by distinct characteristics, which can be detected by microscopic, proteomic or genomic methods. There is a great interest to investigate human cells, which are able to change their site of growth within the human body leaving an original site, migrating through vessels and reentering another site. In this review experiments are summarized showing that the application of microgravity-exposure of human cells and cell electrophoresis enable a characterization of cells, which leave a site of growth to enter another one. Biochemical features of separated subpopulations are described and their usefulness for deeper investigation is highlighted.
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Affiliation(s)
| | - Hari H P Cohly
- b Department of Biology, Jackson State University , Jackson , MI , USA
| | - Jayashree Sahana
- c Department of Biomedicine , Aarhus University , Aarhus , Denmark
| | - Daniela Grimm
- c Department of Biomedicine , Aarhus University , Aarhus , Denmark
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ITGB1-dependent upregulation of Caveolin-1 switches TGFβ signalling from tumour-suppressive to oncogenic in prostate cancer. Sci Rep 2018; 8:2338. [PMID: 29402961 PMCID: PMC5799174 DOI: 10.1038/s41598-018-20161-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 01/15/2018] [Indexed: 01/10/2023] Open
Abstract
Caveolin-1 (CAV1) is over-expressed in prostate cancer (PCa) and is associated with adverse prognosis, but the molecular mechanisms linking CAV1 expression to disease progression are poorly understood. Extensive gene expression correlation analysis, quantitative multiplex imaging of clinical samples, and analysis of the CAV1-dependent transcriptome, supported that CAV1 re-programmes TGFβ signalling from tumour suppressive to oncogenic (i.e. induction of SLUG, PAI-1 and suppression of CDH1, DSP, CDKN1A). Supporting such a role, CAV1 knockdown led to growth arrest and inhibition of cell invasion in prostate cancer cell lines. Rationalized RNAi screening and high-content microscopy in search for CAV1 upstream regulators revealed integrin beta1 (ITGB1) and integrin associated proteins as CAV1 regulators. Our work suggests TGFβ signalling and beta1 integrins as potential therapeutic targets in PCa over-expressing CAV1, and contributes to better understand the paradoxical dual role of TGFβ in tumour biology.
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15
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Mechanotransduction of matrix stiffness in regulation of focal adhesion size and number: reciprocal regulation of caveolin-1 and β1 integrin. Sci Rep 2017; 7:15008. [PMID: 29118431 PMCID: PMC5678369 DOI: 10.1038/s41598-017-14932-6] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 10/18/2017] [Indexed: 01/06/2023] Open
Abstract
Focal adhesion (FA) assembly, mediated by integrin activation, responds to matrix stiffness; however, the underlying mechanisms are unclear. Here, we showed that β1 integrin and caveolin-1 (Cav1) levels were decreased with declining matrix stiffness. Soft matrix selectively downregulated β1 integrin by endocytosis and subsequent lysosomal degradation. Disruption of lipid rafts with methyl-β-cyclodextrin or nystatin, or knockdown of Cav1 by siRNA decreased cell spreading, FA assembly, and β1 integrin protein levels in cells cultured on stiff matrix. Overexpression of Cav1, particularly the phospho-mimetic mutant Cav1-Y14D, averted soft matrix-induced decreases in β1 integrin protein levels, cell spreading, and FA assembly in NMuMG cells. Interestingly, overexpression of an auto-clustering β1 integrin hindered soft matrix-induced reduction of Cav1 and cell spreading, which suggests a reciprocal regulation between β1 integrin and Cav1. Finally, co-expression of this auto-clustering β1 integrin and Cav1-Y14D synergistically enhanced cell spreading, and FA assembly in HEK293T cells cultured on either stiff ( > G Pa) or soft (0.2 kPa) matrices. Collectively, these results suggest that matrix stiffness governs the expression of β1 integrin and Cav1, which reciprocally control each other, and subsequently determine FA assembly and turnover.
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16
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Pekow J, Hutchison AL, Meckel K, Harrington K, Deng Z, Talasila N, Rubin DT, Hanauer SB, Hurst R, Umanskiy K, Fichera A, Hart J, Dinner AR, Bissonnette M. miR-4728-3p Functions as a Tumor Suppressor in Ulcerative Colitis-associated Colorectal Neoplasia Through Regulation of Focal Adhesion Signaling. Inflamm Bowel Dis 2017; 23:1328-1337. [PMID: 28594651 PMCID: PMC5535754 DOI: 10.1097/mib.0000000000001104] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND As mechanisms of neoplasia in patients with ulcerative colitis (UC) remain poorly understood, we sought to identify pathways of carcinogenesis in this high-risk population. METHODS MicroRNA (miRNA) and mRNA expression was examined in nondysplastic rectosigmoid mucosa from UC patients with (n = 19) or without remote colon neoplasia (n = 23). We developed a method to identify miRNA-regulated pathways based on differentially expressed miRNAs and their putative mRNAs targets in the same samples. One key pathway identified in the analysis, miR-4728-3p regulation of focal adhesion signaling was further evaluated in vitro and through examination of expression in UC-cancers. RESULTS There were 101 significantly up-regulated and 98 down-regulated miRNAs (adjusted P < 0.05) in the rectal mucosa of UC patients harboring proximal neoplasia. Bioinformatic analysis identified miR-4728-3p as a regulator of 3 proteins involved in focal adhesion signaling, CAV1, THBS2, and COL1A2. Real-time PCR validated down-regulation of miR-4728-3p in nondysplastic tissue remote from UC-neoplasia and in UC-associated colon cancers. miR-4728-3p transfection into colon cancer cells down-regulated expression levels and decreased luciferase activities in cells expressing a wild type 3' untranslated region compared with a mutant 3' untranslated region for all 3 genes. Exogenous transfected miR-4728-3p also delayed wound healing and decreased formation of focal adhesion complexes. CONCLUSIONS Patients with long-standing UC who harbor neoplasia can be identified based on miRNA and mRNA profiles in nondysplastic tissue. Using a method to analyze miRNA and mRNA expression from the same tissues, we identified that miR-4728-3p is likely an important tumor suppressor in UC-associated colon carcinogenesis.
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Affiliation(s)
- Joel Pekow
- University of Chicago, Section of Gastroenterology, Hepatology, and Nutrition, Chicago, IL, USA
| | | | - Katherine Meckel
- University of Chicago, Section of Gastroenterology, Hepatology, and Nutrition, Chicago, IL, USA
| | - Kymberly Harrington
- University of Chicago, Section of Gastroenterology, Hepatology, and Nutrition, Chicago, IL, USA
| | - Zifeng Deng
- University of Chicago, Section of Gastroenterology, Hepatology, and Nutrition, Chicago, IL, USA
| | - Nitya Talasila
- University of Chicago, Section of Gastroenterology, Hepatology, and Nutrition, Chicago, IL, USA
| | - David T. Rubin
- University of Chicago, Section of Gastroenterology, Hepatology, and Nutrition, Chicago, IL, USA
| | | | - Roger Hurst
- University of Chicago, Department of Surgery
| | | | | | - John Hart
- University of Chicago Department of Pathology
| | - Aaron R. Dinner
- University of Chicago, Department of Chemistry, Chicago, IL USA
| | - Marc Bissonnette
- University of Chicago, Section of Gastroenterology, Hepatology, and Nutrition, Chicago, IL, USA
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17
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Borger JG, Morrison VL, Filby A, Garcia C, Uotila LM, Simbari F, Fagerholm SC, Zamoyska R. Caveolin-1 Influences LFA-1 Redistribution upon TCR Stimulation in CD8 T Cells. THE JOURNAL OF IMMUNOLOGY 2017. [PMID: 28637901 PMCID: PMC5523581 DOI: 10.4049/jimmunol.1700431] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
TCR stimulation by peptide-MHC complexes on APCs requires precise reorganization of molecules into the area of cellular contact to form an immunological synapse from where T cell signaling is initiated. Caveolin (Cav)1, a widely expressed transmembrane protein, is involved in the regulation of membrane composition, cellular polarity and trafficking, and the organization of signal transduction pathways. The presence of Cav1 protein in T cells was identified only recently, and its function in this context is not well understood. We show that Cav1-knockout CD8 T cells have a reduction in membrane cholesterol and sphingomyelin, and upon TCR triggering they exhibit altered morphology and polarity, with reduced effector function compared with Cav1 wild-type CD8 T cells. In particular, redistribution of the β2 integrin LFA-1 to the immunological synapse is compromised in Cav1-knockout T cells, as is the ability of LFA-1 to form high-avidity interactions with ICAM-1. Our results identify a role for Cav1 in membrane organization and β2 integrin function in primary CD8 T cells.
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Affiliation(s)
- Jessica G Borger
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh EH9 3FL, United Kingdom
| | | | - Andrew Filby
- Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom; and
| | - Celine Garcia
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh EH9 3FL, United Kingdom
| | - Liisa M Uotila
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
| | - Fabio Simbari
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh EH9 3FL, United Kingdom
| | | | - Rose Zamoyska
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh EH9 3FL, United Kingdom;
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18
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Survive or thrive: tradeoff strategy for cellular senescence. Exp Mol Med 2017; 49:e342. [PMID: 28572574 PMCID: PMC5519021 DOI: 10.1038/emm.2017.94] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 02/06/2017] [Accepted: 02/16/2017] [Indexed: 12/12/2022] Open
Abstract
Aging-dependent cellular behaviors toward extrinsic stress are characterized by the confined localization of certain molecules to either nuclear or perinuclear regions. Although most growth factors can activate downstream signaling in aging cells, they do not in fact have any impact on the cells because the signals cannot reach their genetic targets in the nucleus. For the same reason, varying apoptotic stress factors cannot stimulate the apoptotic pathway in senescent cells. Thus, the operation of a functional nuclear barrier in an aging-dependent manner has been investigated. To elucidate the mechanism for this process, the housekeeping transcription factor Sp1 was identified as a general regulator of nucleocytoplasmic trafficking (NCT) genes, including various nucleoporins, importins, exportins and Ran GTPase cycle-related genes. Interestingly, the posttranslational modification of Sp1 is readily influenced by extrinsic stress, including oxidative and metabolic stress. The decrease in SP1 O-GlcNAcylation under oxidative stress or during replicative senescence makes it susceptible to proteosomal degradation, resulting in defective NCT functions and leading to nuclear barrier formation. The operation of the nuclear barrier in aging provides a fundamental mechanism for cellular protection against stress and promotes survival at the expense of growth via stress-sensitive transcriptional control.
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19
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20
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Wang Z, Wang N, Liu P, Peng F, Tang H, Chen Q, Xu R, Dai Y, Lin Y, Xie X, Peng C, Situ H. Caveolin-1, a stress-related oncotarget, in drug resistance. Oncotarget 2016; 6:37135-50. [PMID: 26431273 PMCID: PMC4741920 DOI: 10.18632/oncotarget.5789] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 09/08/2015] [Indexed: 12/28/2022] Open
Abstract
Caveolin-1 (Cav-1) is both a tumor suppressor and an oncoprotein. Cav-1 overexpression was frequently confirmed in advanced cancer stages and positively associated with ABC transporters, cancer stem cell populations, aerobic glycolysis activity and autophagy. Cav-1 was tied to various stresses including radiotherapy, fluid shear and oxidative stresses and ultraviolet exposure, and interacted with stress signals such as AMP-activated protein kinase. Finally, a Cav-1 fluctuation model during cancer development is provided and Cav-1 is suggested to be a stress signal and cytoprotective. Loss of Cav-1 may increase susceptibility to oncogenic events. However, research to explore the underlying molecular network between Cav-1 and stress signals is warranted.
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Affiliation(s)
- Zhiyu Wang
- Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Neng Wang
- Department of Breast Oncology, Sun Yat-sen Univeristy Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, China
| | - Pengxi Liu
- Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Fu Peng
- Pharmacy College, State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Guangzhou, China
| | - Hailin Tang
- Department of Breast Oncology, Sun Yat-sen Univeristy Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, China
| | - Qianjun Chen
- Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Rui Xu
- Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yan Dai
- Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yi Lin
- Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaoming Xie
- Department of Breast Oncology, Sun Yat-sen Univeristy Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, China
| | - Cheng Peng
- Pharmacy College, State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Guangzhou, China
| | - Honglin Situ
- Department of Mammary Disease, Guangdong Provincial Hospital of Chinese Medicine, The Second Clinical Collage of Guangzhou University of Chinese Medicine, Guangzhou, China
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21
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Hwang IH, Kwon YK, Cho CK, Lee YW, Sung JS, Joo JC, Lee KB, Yoo HS, Jang IS. Modified Panax ginseng Extract Inhibits uPAR-Mediated α5β1-Integrin Signaling by Modulating Caveolin-1 to Induce Early Apoptosis in Lung Cancer Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2016; 44:1081-97. [PMID: 27430913 DOI: 10.1142/s0192415x16500609] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Urokinase receptor (uPAR) is enhanced in many human cancer cells and is frequently an indicator of poor prognosis. Activation of [Formula: see text]1-integrin requires caveolin-1 and is regulated by uPAR. However, the underlying molecular mechanism responsible for the interaction between uPAR and [Formula: see text]1-integrin remains obscure. We found that modified regular Panax ginseng extract (MRGX) had a negative modulating effect on the uPAR/[Formula: see text]1-integrin interaction, disrupted the uPAR/integrin interaction by modulating caveoline-1, and caused early apoptosis in cancer cells. Additionally, we found that siRNA-mediated caveoline-1 downregulation inhibited uPAR-mediated [Formula: see text]1-integrin signaling, whereas caveoline-1 up-regulation stimulated the signaling, which suppressed p53 expression, thereby indicating negative crosstalk exists between the integrin [Formula: see text]1 and the p53 pathways. Thus, these findings identify a novel mechanism whereby the inhibition of [Formula: see text]1 integrin and the activation of p53 modulate the expression of the anti-apoptotic proteins that are crucially involved in inducing apoptosis in A549 lung cancer cells. Furthermore, MRGX causes changes in the expressions of members of the Bcl-2 family (Bax and Bcl-2) in a pro-apoptotic manner. In addition, MGRX-mediated inhibition of [Formula: see text]1 integrin attenuates ERK phosphorylation (p-ERK), which up-regulates caspase-8 and Bax. Therefore, ERK may affect mitochondria through a negative regulation of caspase-8 and Bax. Taken together, these findings reveal that MRGX is involved in uPAR-[Formula: see text]1-integrin signaling by modulating caveolin-1 signaling to induce early apoptosis in A549 lung-cancer cells and strongly indicate that MRGX might be useful as a herbal medicine and may lead to the development of new herbal medicine that would suppress the growth of lung-cancer cells.
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Affiliation(s)
- In-Hu Hwang
- Department of Physiology, Korea University College of Medicine, Seoul 136-705, Republic of Korea
| | - Yong-Kyun Kwon
- East-West Cancer Center, Daejeon University, Daejeon 302-120, Republic of Korea
| | - Chong-Kwan Cho
- East-West Cancer Center, Daejeon University, Daejeon 302-120, Republic of Korea
| | - Yeon-Weol Lee
- East-West Cancer Center, Daejeon University, Daejeon 302-120, Republic of Korea
| | - Jung-Suk Sung
- Department of Life Science, Dongguk University, Goyang, Gyeonggi-do 10326, Republic of Korea
| | - Jong-Cheon Joo
- Department of Sasang Constitutional Medicine, Wonkwang University Oriental Medical Hospital, Jeonju 54887, Republic of Korea
| | - Kyung-Bok Lee
- Division of Bioconvergence, Korea Basic Science Institute, Daejeon 305-333, Korea
| | - Hwa-Seung Yoo
- East-West Cancer Center, Daejeon University, Daejeon 302-120, Republic of Korea
| | - Ik-Soon Jang
- Division of Bioconvergence, Korea Basic Science Institute, Daejeon 305-333, Korea
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22
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Mrkonjic S, Destaing O, Albiges-Rizo C. Mechanotransduction pulls the strings of matrix degradation at invadosome. Matrix Biol 2016; 57-58:190-203. [PMID: 27392543 DOI: 10.1016/j.matbio.2016.06.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/16/2016] [Accepted: 06/28/2016] [Indexed: 02/07/2023]
Abstract
Degradation of the extracellular matrix is a critical step of tumor cell invasion. Both protease-dependent and -independent mechanisms have been described as alternate processes in cancer cell motility. Interestingly, some effectors of protease-dependent degradation are focalized at invadosomes and are directly coupled with contractile and adhesive machineries composed of multiple mechanosensitive proteins. This review presents recent findings in protease-dependent mechanisms elucidating the ways the force affects extracellular matrix degradation by targeting protease expression and activity at invadosome. The aim is to highlight mechanosensing and mechanotransduction processes to direct the degradative activity at invadosomes, with the focus on membrane tension, proteases and mechanosensitive ion channels.
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Affiliation(s)
- Sanela Mrkonjic
- INSERM U1209, Grenoble F-38042, France; Université Grenoble Alpes, Institut Albert Bonniot, F-38042 Grenoble, France; CNRS UMR 5309, F-38042 Grenoble, France
| | - Olivier Destaing
- INSERM U1209, Grenoble F-38042, France; Université Grenoble Alpes, Institut Albert Bonniot, F-38042 Grenoble, France; CNRS UMR 5309, F-38042 Grenoble, France.
| | - Corinne Albiges-Rizo
- INSERM U1209, Grenoble F-38042, France; Université Grenoble Alpes, Institut Albert Bonniot, F-38042 Grenoble, France; CNRS UMR 5309, F-38042 Grenoble, France.
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23
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Ortiz R, Díaz J, Díaz N, Lobos-Gonzalez L, Cárdenas A, Contreras P, Díaz MI, Otte E, Cooper-White J, Torres V, Leyton L, Quest AF. Extracellular matrix-specific Caveolin-1 phosphorylation on tyrosine 14 is linked to augmented melanoma metastasis but not tumorigenesis. Oncotarget 2016; 7:40571-40593. [PMID: 27259249 PMCID: PMC5130029 DOI: 10.18632/oncotarget.9738] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 05/16/2016] [Indexed: 12/15/2022] Open
Abstract
Caveolin-1 (CAV1) is a scaffolding protein that plays a dual role in cancer. In advanced stages of this disease, CAV1 expression in tumor cells is associated with enhanced metastatic potential, while, at earlier stages, CAV1 functions as a tumor suppressor. We recently implicated CAV1 phosphorylation on tyrosine 14 (Y14) in CAV1-enhanced cell migration. However, the contribution of this modification to the dual role of CAV1 in cancer remained unexplored. Here, we used in vitro [2D and transendothelial cell migration (TEM), invasion] and in vivo (metastasis) assays, as well as genetic and biochemical approaches to address this question in B16F10 murine melanoma cells. CAV1 promoted directional migration on fibronectin or laminin, two abundant lung extracellular matrix (ECM) components, which correlated with enhanced Y14 phosphorylation during spreading. Moreover, CAV1-driven migration, invasion, TEM and metastasis were ablated by expression of the phosphorylation null CAV1(Y14F), but not the phosphorylation mimicking CAV1(Y14E) mutation. Finally, CAV1-enhanced focal adhesion dynamics and surface expression of beta1 integrin were required for CAV1-driven TEM. Importantly, CAV1 function as a tumor suppressor in tumor formation assays was not altered by the Y14F mutation. In conclusion, our results provide critical insight to the mechanisms of CAV1 action during cancer development. Specific ECM-integrin interactions and Y14 phosphorylation are required for CAV1-enhanced melanoma cell migration, invasion and metastasis to the lung. Because Y14F mutation diminishes metastasis without inhibiting the tumor suppressor function of CAV1, Y14 phosphorylation emerges as an attractive therapeutic target to prevent metastasis without altering beneficial traits of CAV1.
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Affiliation(s)
- Rina Ortiz
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Universidad Bernardo O Higgins, Facultad de Salud, Departamento de Ciencias Químicas y Biológicas, Santiago, Chile
- Biomedical Neuroscience Institute (BNI) Santiago, Chile
| | - Jorge Díaz
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Natalia Díaz
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Biomedical Neuroscience Institute (BNI) Santiago, Chile
| | - Lorena Lobos-Gonzalez
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Andes Biotechnologies SA, Ñuñoa, Santiago, Chile
- Fundación Ciencia & Vida, Ñuñoa, Santiago, Chile
| | - Areli Cárdenas
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Biomedical Neuroscience Institute (BNI) Santiago, Chile
| | - Pamela Contreras
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - María Inés Díaz
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Ellen Otte
- Australian Institute for Bioengineering & Nanotechnology, The University of Queensland, St. Lucia, Queensland, Australia
| | - Justin Cooper-White
- Australian Institute for Bioengineering & Nanotechnology, The University of Queensland, St. Lucia, Queensland, Australia
| | - Vicente Torres
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Lisette Leyton
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Biomedical Neuroscience Institute (BNI) Santiago, Chile
| | - Andrew F.G. Quest
- Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Laboratory of Cellular Communication, Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
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24
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Sohn J, Brick RM, Tuan RS. From embryonic development to human diseases: The functional role of caveolae/caveolin. ACTA ACUST UNITED AC 2016; 108:45-64. [PMID: 26991990 DOI: 10.1002/bdrc.21121] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 02/22/2016] [Indexed: 02/06/2023]
Abstract
Caveolae, an almost ubiquitous, structural component of the plasma membrane, play a critical role in many functions essential for proper cell function, including membrane trafficking, signal transduction, extracellular matrix remodeling, and tissue regeneration. Three main types of caveolin proteins have been identified from caveolae since the discovery of caveolin-1 in the early 1990s. All three (Cav-1, Cav-2, and Cav-3) play crucial roles in mammalian physiology, and can effect pathogenesis in a wide range of human diseases. While many biological activities of caveolins have been uncovered since its discovery, their role and regulation in embryonic develop remain largely poorly understood, although there is increasing evidence that caveolins may be linked to lung and brain birth defects. Further investigations are clearly needed to decipher how caveolae/caveolins mediate cellular functions and activities of normal embryogenesis and how their perturbations contribute to developmental disorders.
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Affiliation(s)
- Jihee Sohn
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Rachel M Brick
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Rocky S Tuan
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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Carpinteiro A, Becker KA, Japtok L, Hessler G, Keitsch S, Požgajovà M, Schmid KW, Adams C, Müller S, Kleuser B, Edwards MJ, Grassmé H, Helfrich I, Gulbins E. Regulation of hematogenous tumor metastasis by acid sphingomyelinase. EMBO Mol Med 2016; 7:714-34. [PMID: 25851537 PMCID: PMC4459814 DOI: 10.15252/emmm.201404571] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Metastatic dissemination of cancer cells is the ultimate hallmark of malignancy and accounts for approximately 90% of human cancer deaths. We investigated the role of acid sphingomyelinase (Asm) in the hematogenous metastasis of melanoma cells. Intravenous injection of B16F10 melanoma cells into wild-type mice resulted in multiple lung metastases, while Asm-deficient mice (Smpd1−/− mice) were protected from pulmonary tumor spread. Transplanting wild-type platelets into Asm-deficient mice reinstated tumor metastasis. Likewise, Asm-deficient mice were protected from hematogenous MT/ret melanoma metastasis to the spleen in a mouse model of spontaneous tumor metastasis. Human and mouse melanoma cells triggered activation and release of platelet secretory Asm, in turn leading to ceramide formation, clustering, and activation of α5β1 integrins on melanoma cells finally leading to adhesion of the tumor cells. Clustering of integrins by applying purified Asm or C16 ceramide to B16F10 melanoma cells before intravenous injection restored trapping of tumor cells in the lung in Asm-deficient mice. This effect was revertable by arginine-glycine-aspartic acid peptides, which are known inhibitors of integrins, and by antibodies neutralizing β1 integrins. These findings indicate that melanoma cells employ platelet-derived Asm for adhesion and metastasis.
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Affiliation(s)
- Alexander Carpinteiro
- Department of Molecular Biology, University of Duisburg-Essen, Essen, Germany Department of Hematology, University of Duisburg-Essen, Essen, Germany
| | - Katrin Anne Becker
- Department of Molecular Biology, University of Duisburg-Essen, Essen, Germany
| | - Lukasz Japtok
- Institute for Nutritional Science University of Potsdam, Nuthetal, Germany
| | - Gabriele Hessler
- Department of Molecular Biology, University of Duisburg-Essen, Essen, Germany
| | - Simone Keitsch
- Department of Molecular Biology, University of Duisburg-Essen, Essen, Germany
| | - Miroslava Požgajovà
- Department of Genetics and Breeding Biology, Slovak University of Agriculture, Nitra, Slovakia
| | - Kurt W Schmid
- Department of Pathology and Neuropathology, University of Duisburg-Essen, Essen, Germany
| | - Constantin Adams
- Department of Molecular Biology, University of Duisburg-Essen, Essen, Germany
| | - Stefan Müller
- Department of Nuclear Medicine, University of Duisburg-Essen, Essen, Germany
| | - Burkhard Kleuser
- Institute for Nutritional Science University of Potsdam, Nuthetal, Germany
| | - Michael J Edwards
- Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
| | - Heike Grassmé
- Department of Molecular Biology, University of Duisburg-Essen, Essen, Germany
| | - Iris Helfrich
- Department of Dermatology, University of Duisburg-Essen, Essen, Germany
| | - Erich Gulbins
- Department of Molecular Biology, University of Duisburg-Essen, Essen, Germany Department of Surgery, University of Cincinnati, Cincinnati, OH, USA
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Kalamgi RC, Larsson L. Mechanical Signaling in the Pathophysiology of Critical Illness Myopathy. Front Physiol 2016; 7:23. [PMID: 26869939 PMCID: PMC4740381 DOI: 10.3389/fphys.2016.00023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 01/18/2016] [Indexed: 12/14/2022] Open
Abstract
The complete loss of mechanical stimuli of skeletal muscles, i.e., the loss of external strain, related to weight bearing, and internal strain, related to the contraction of muscle cells, is uniquely observed in pharmacologically paralyzed or deeply sedated mechanically ventilated intensive care unit (ICU) patients. The preferential loss of myosin and myosin associated proteins in limb and trunk muscles is a significant characteristic of critical illness myopathy (CIM) which separates CIM from other types of acquired muscle weaknesses in ICU patients. Mechanical silencing is an important factor triggering CIM. Microgravity or ground based microgravity models form the basis of research on the effect of muscle unloading-reloading, but the mechanisms and effects may differ from the ICU conditions. In order to understand how mechanical tension regulates muscle mass, it is critical to know how muscles sense mechanical information and convert stimulus to intracellular biochemical actions and changes in gene expression, a process called cellular mechanotransduction. In adult skeletal muscles and muscle fibers, this process may differ, the same stimulus can cause divergent response and the same fiber type may undergo opposite changes in different muscles. Skeletal muscle contains multiple types of mechano-sensors and numerous structures that can be affected differently and hence respond differently in distinct muscles.
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Affiliation(s)
- Rebeca C Kalamgi
- Basic and Clinical Muscle Biology, Department of Physiology and Pharmacology, Karolinska Institutet Stockholm, Sweden
| | - Lars Larsson
- Basic and Clinical Muscle Biology, Department of Physiology and Pharmacology, Karolinska InstitutetStockholm, Sweden; Department of Clinical Neuroscience, Clinical Neurophysiology, Karolinska InstitutetStockholm, Sweden
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Abstract
Spatial organization of the plasma membrane is an essential feature of the cellular response to external stimuli. Receptor organization at the cell surface mediates transmission of extracellular stimuli to intracellular signalling molecules and effectors that impact various cellular processes including cell differentiation, metabolism, growth, migration and apoptosis. Membrane domains include morphologically distinct plasma membrane invaginations such as clathrin-coated pits and caveolae, but also less well-defined domains such as lipid rafts and the galectin lattice. In the present chapter, we will discuss interaction between caveolae, lipid rafts and the galectin lattice in the control of cancer cell signalling.
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28
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Shen J, Wang Q, Wang J, Su GH, Wang J, Guo SH, Liu YA, Wu Z, Liu RF, Li X, Guo XJ, Cao J, Zhang YH, Wang ZY. Analysis of soluble urokinase plasminogen activator receptor in multiple myeloma for predicting prognosis. Oncol Lett 2015; 10:2403-2409. [PMID: 26622860 DOI: 10.3892/ol.2015.3613] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 05/29/2015] [Indexed: 01/27/2023] Open
Abstract
Multiple myeloma is a type of malignancy, which affects the plasma cells of the bone marrow. Recent studies have found that malignant plasma cells may express urokinase plasminogen activator (uPA) and uPA receptor (uPAR), and that initiation of proteolytic events by this system contributes to the process of invasion and destruction of the bone marrow. Studies have also suggested that the level of the soluble form of uPAR (suPAR) may act as a marker for prognosis in patients with multiple myeloma, and that there is an association between uPAR/suPAR expression, and clinical characteristics, efficacy of treatment in disease control and patient survival. In order to investigate this, the present study used flow cytometry to detect the monoclonal antibodies associated with multiple myeloma, specifically, uPAR (CD87), CD56 and CD38. Patients with multiple myeloma were divided into the following groups: The effective groups (remission and stable disease) and the ineffective group (progressive disease). suPAR expression in the effective groups was 257.6±32.47 pg/ml and 331.0±99.80 pg/ml respectively, which was not significantly different from that of the normal control group (P>0.05). By contrast, the suPAR level in the invalid group was 562.2±291.0 pg/ml, which was significantly different from the levels in the normal control group (P<0.01) and the effective groups (P<0.05). suPAR levels were positively correlated with disease stage (P<0.01), renal function (P<0.05), C-reactive protein (P<0.005), β2-microglobulin (P<0.001), extramedullary involvement (P<0.001), chromosome 13 deletion (P<0.01) and survival >2 years (P<0.01). They were was negatively correlated with hemoglobin concentration. No correlation was observed between uPAR expression and suPAR levels. The present study also indicated that the stage of disease and suPAR expression were independent factors, which predicted survival of <2 years. In conclusion, high suPAR expression appears to predict disease progression, a shortened survival period and early extramedullary infiltration.
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Affiliation(s)
- Jie Shen
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China ; Department of Hematology, Centre Hospital of Cangzhou, Cangzhou, Hebei 061001, P.R. China
| | - Qing Wang
- Department of Hematology, Centre Hospital of Cangzhou, Cangzhou, Hebei 061001, P.R. China
| | - Juan Wang
- Department of Hematology, Centre Hospital of Cangzhou, Cangzhou, Hebei 061001, P.R. China
| | - Guo-Hong Su
- Department of Hematology, Centre Hospital of Cangzhou, Cangzhou, Hebei 061001, P.R. China
| | - Juan Wang
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Sheng-Hu Guo
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Y A Liu
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Zheng Wu
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Rong-Feng Liu
- Department of Oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Xing Li
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Xiao-Jin Guo
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Jing Cao
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Yue-Hua Zhang
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Zhi-Yu Wang
- Department of Immunology and Immunotherapy, Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
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Wang S, Kaartinen MT. Cellular Factor XIIIA Transglutaminase Localizes in Caveolae and Regulates Caveolin-1 Phosphorylation, Homo-oligomerization and c-Src Signaling in Osteoblasts. J Histochem Cytochem 2015; 63:829-41. [PMID: 26231113 DOI: 10.1369/0022155415597964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 07/05/2015] [Indexed: 11/22/2022] Open
Abstract
Transglutaminases (TGs) are a family of widely distributed enzymes that catalyze protein crosslinking by forming a covalent isopeptide bond between the substrate proteins. We have shown that MC3T3-E1 osteoblasts express Factor XIII-A (FXIII-A), and that the extracellular crosslinking activity of FXIII-A is involved in regulating matrix secretion and deposition. In this study, we have investigated the localization and potential role of intracellular FXIII-A. Conventional immunofluorescence microscopy and TIRF microscopy analyses showed that FXIII-A co-localizes with caveolin-1 in specialized membrane structures, caveolae, in differentiating osteoblasts. The caveolae-disrupting agent methyl-β-cyclodextrin abolished FXIII-A staining and co-localization with caveolin-1 from the osteoblast plasma membrane. The presence of FXIII-A in caveolae was confirmed by preparing caveolae-enriched cellular fractions using sucrose density gradient ultracentrifugation followed by western blotting. Despite this association of FXIII-A with caveolae, there was no detectable transglutaminase activity in caveolae, as measured by monodansylcadaverine incorporation. TG inhibitor NC9--which can alter TG enzyme conformation--localized to caveolae and displaced FXIII-A from these structures when added to the osteoblast cultures. The decreased FXIII-A levels in caveolae after NC9 treatment increased c-Src activation, which resulted in caveolin-1 phosphorylation, homo-oligomerization and Akt phosphorylation, suggesting cellular FXIII-A has a role in regulating c-Src signaling in osteoblasts.
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Affiliation(s)
- Shuai Wang
- Division of Biomedical Sciences, Faculty of Dentistry, McGill University, Montreal, QC, Canada. (SW, MTK)
| | - Mari T Kaartinen
- Division of Experimental Medicine, Department of Medicine, Faculty of Medicine, McGill University, Montreal, QC, Canada (MTK),Division of Biomedical Sciences, Faculty of Dentistry, McGill University, Montreal, QC, Canada. (SW, MTK)
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Abstract
Metastases are responsible for most cancer-related deaths. One of the hallmarks of metastatic cells is increased motility and migration through extracellular matrixes. These processes rely on specific small GTPases, in particular those of the Rho family. Deleted in liver cancer-1 (DLC1) is a tumor suppressor that bears a RhoGAP activity. This protein is lost in most cancers, allowing malignant cells to proliferate and disseminate in a Rho-dependent manner. However, DLC1 is also a scaffold protein involved in alternative pathways leading to tumor and metastasis suppressor activities. Recently, substantial information has been gathered on these mechanisms and this review is aiming at describing the potential and known alternative GAP-independent mechanisms allowing DLC1 to impair migration, invasion, and metastasis formation.
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Galectin-3 Overrides PTRF/Cavin-1 Reduction of PC3 Prostate Cancer Cell Migration. PLoS One 2015; 10:e0126056. [PMID: 25942420 PMCID: PMC4420459 DOI: 10.1371/journal.pone.0126056] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 03/28/2015] [Indexed: 12/31/2022] Open
Abstract
Expression of Caveolin-1 (Cav1), a key component of cell surface caveolae, is elevated in prostate cancer (PCa) and associated with PCa metastasis and a poor prognosis for PCa patients. Polymerase I and Transcript Release Factor (PTRF)/cavin-1 is a cytoplasmic protein required for Cav1-dependent formation of caveolae. Expression of PTRF reduces the motility of PC3 cells, a metastatic prostate cancer cell line that endogenously expresses abundant Cav1 but no PTRF and no caveolae, suggesting a role for non-caveolar Cav1 domains, or Cav1 scaffolds, in PCa cell migration. Tyrosine phosphorylated Cav1 (pCav1) functions in concert with Galectin-3 (Gal3) and the galectin lattice to stabilize focal adhesion kinase (FAK) within focal adhesions (FAs) and promote cancer cell motility. However, whether PTRF regulation of Cav1 function in PCa cell migration is related to Gal3 expression and functionality has yet to be determined. Here we show that PTRF expression in PC3 cells reduces FAK stabilization in focal adhesions and reduces cell motility without affecting pCav1 levels. Exogenous Gal3 stabilized FAK in focal adhesions of PTRF-expressing cells and restored cell motility of PTRF-expressing PC3 cells to levels of PC3 cells in a dose-dependent manner, with an optimal concentration of 2 µg/ml. Exogenous Gal3 stabilized FAK in focal adhesions of Gal3 knockdown PC3 cells but not in Cav1 knockdown PC3 cells. Cav1 knockdown also prevented Gal3 rescue of FA-associated FAK stabilization in PTRF-expressing PC3 cells. Our data support a role for PTRF/cavin-1, through caveolae formation, as an attenuator of the non-caveolar functionality of Cav1 in Gal3-Cav1 signalling and regulation of focal adhesion dynamics and cancer cell migration.
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Liu X, Lan Y, Zhang D, Wang K, Wang Y, Hua ZC. SPRY1 promotes the degradation of uPAR and inhibits uPAR-mediated cell adhesion and proliferation. Am J Cancer Res 2014; 4:683-97. [PMID: 25520860 PMCID: PMC4266704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 10/18/2014] [Indexed: 06/04/2023] Open
Abstract
Urokinase plasminogen activator receptor (uPAR) is a GPI anchored cell surface protein that is closely associated with invasion, migration, and metastasis of cancer cells. Many functional extracellular proteins and transmembrane receptors interact with uPAR. However, few studies have examined the association of uPAR with cytoplasm proteins. We previously used yeast two-hybrid screening to isolate several novel uPAR-interacting cytoplasmic proteins, including Sprouty1 (SPRY1), an inhibitor of the (Ras-mitogen-activated protein kinase) MAPK pathway. In this study, we show that SPRY1 interacts with uPAR and directs it toward lysosomal-mediated degradation. Overexpression of SPRY1 decreased the cell surface and cytoplasmic uPAR protein level. Moreover, SPRY1 overexpression augmented uPAR-induced cell adhesion to vitronectin as well as proliferation of cancer cells. Our results also further support the critical role of SPRY1 contribution to tumor growth. In a subcutaneous tumor model, overexpression of SPRY1 in HCT116 or A549 xenograft in athymic nude mice led to great suppression of tumor growth. These results show that SPRY1 may affect tumor cell function through direct interaction with uPAR and promote its lysosomal degradation.
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Affiliation(s)
- Xiufeng Liu
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Science, Nanjing University22 Han Kou Road, Nanjing 210093, P. R. China
| | - Yan Lan
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Science, Nanjing University22 Han Kou Road, Nanjing 210093, P. R. China
| | - Di Zhang
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Science, Nanjing University22 Han Kou Road, Nanjing 210093, P. R. China
| | - Kai Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Science, Nanjing University22 Han Kou Road, Nanjing 210093, P. R. China
| | - Yao Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Science, Nanjing University22 Han Kou Road, Nanjing 210093, P. R. China
- Division of Critical Care and Surgery, St. George Hospital, University of New South WalesSydney, NSW2217, Australia
| | - Zi-Chun Hua
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Science, Nanjing University22 Han Kou Road, Nanjing 210093, P. R. China
- Changzhou High-Tech Research Institute of Nanjing University and Jiangsu TargetPharma Laboratories Inc.Changzhou 213164, P. R. China
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Hwang JH, Sung JS, Kim JM, Chung YH, Park JS, Lee SH, Jang IS. Caveolin-1-dependent and -independent uPAR signaling pathways contribute to ganglioside GT1b induced early apoptosis in A549 lung cancer cells. Am J Cancer Res 2014; 4:801-810. [PMID: 25520869 PMCID: PMC4266713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 09/28/2014] [Indexed: 06/04/2023] Open
Abstract
Urokinase receptor interacts with α5β1-integrin and enhances cancer cell proliferation and metastasis. Activation of α5β1-integrin requires caveolin-1 and is regulated by uPAR, which upregulates persistently the activated ERK necessary for tumor growth. In this study, we show that the ganglioside GT1b induces proapoptotic signaling through two uPAR-ERK signaling pathways in A549 lung cancer cells. GT1b downregulated the expression of α5β1 integrin, caveolin-1, fibronectin, FAK, and ERK, whereas GT1b upregulated the expression of p53 and uPAR, suggesting GT1b mediated depletion of caveolin-1 in uPAR-expressing A549 cells also disrupts uPAR/integrin complexes, resulting in downregulation of fibronectin-α5β1-integrin-ERK signaling. Following p53 siRNA treatment, FAK and ERK expression was recovered, meaning the presence of reentry uPAR-FAK-ERK signaling pathway. These findings reveal that GT1b is involved in both caveolin-1-dependent uPAR-α5β1-integrin-ERK signaling and caveolin-1-independent uPAR-FAK-ERK signaling. These results suggest a novel function of GT1b as a dual regulator of ERK by modulating caveolin-1 and p53.
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Affiliation(s)
- Jung-Hoo Hwang
- Division of Life Science, Korea Basic Science InstituteDaejeon 305-333, Korea
- Hyundai Senior High SchoolSeoul 127, Korea
| | - Jung-Suk Sung
- Department of Life Science, Dongguk UniversitySeoul 100-715, Korea
| | - Jung Min Kim
- NAR Center, Daejeon UniversityDaejeon 301-724, Korea
| | - Young-Ho Chung
- Division of Life Science, Korea Basic Science InstituteDaejeon 305-333, Korea
| | - Jun Soo Park
- Division of Biological Science and Technology, Yonsei UniversityWonju 220-100, Korea
| | - Seung-Hoon Lee
- Division of Life Science, Yongin UniversityYongin 449-714, Korea
| | - Ik-Soon Jang
- Division of Life Science, Korea Basic Science InstituteDaejeon 305-333, Korea
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Israeli-Rosenberg S, Chen C, Li R, Deussen DN, Niesman IR, Okada H, Patel HH, Roth DM, Ross RS. Caveolin modulates integrin function and mechanical activation in the cardiomyocyte. FASEB J 2014; 29:374-84. [PMID: 25366344 DOI: 10.1096/fj.13-243139] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
β1 integrins (β1) transduce mechanical signals in many cells, including cardiac myocytes (CM). Given their close localization, as well as their role in mechanotransduction and signaling, we hypothesized that caveolin (Cav) proteins might regulate integrins in the CM. β1 localization, complex formation, activation state, and signaling were analyzed using wild-type, Cav3 knockout, and Cav3 CM-specific transgenic heart and myocyte samples. Studies were performed under basal and mechanically loaded conditions. We found that: (1) β1 and Cav3 colocalize in CM and coimmunoprecipitate from CM protein lysates; (2) β1 is detected in a subset of caveolae; (3) loss of Cav3 caused reduction of β1D integrin isoform and active β1 integrin from the buoyant domains in the heart; (4) increased expression of myocyte Cav3 correlates with increased active β1 integrin in adult CM; (5) in vivo pressure overload of the wild-type heart results in increased activated integrin in buoyant membrane domains along with increased association between active integrin and Cav3; and (6) Cav3-deficient myocytes have perturbed basal and stretch mediated signaling responses. Thus, Cav3 protein can modify integrin function and mechanotransduction in the CM and intact heart.
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Affiliation(s)
- Sharon Israeli-Rosenberg
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - Chao Chen
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - Ruixia Li
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - Daniel N Deussen
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - Ingrid R Niesman
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - Hideshi Okada
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - Hemal H Patel
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - David M Roth
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
| | - Robert S Ross
- *Department of Medicine and Department of Anesthesiology, University of California at San Diego, School of Medicine, San Diego, California, USA; U.S. Veterans Administration, San Diego Healthcare System, San Diego, California, USA; and Maastricht University, Maastricht, The Netherlands
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Gupta R, Toufaily C, Annabi B. Caveolin and cavin family members: dual roles in cancer. Biochimie 2014; 107 Pt B:188-202. [PMID: 25241255 DOI: 10.1016/j.biochi.2014.09.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 09/04/2014] [Indexed: 12/16/2022]
Abstract
Caveolae are specialized plasma membrane subdomains with distinct lipid and protein compositions, which play an essential role in cell physiology through regulation of trafficking and signaling functions. The structure and functions of caveolae have been shown to require the proteins caveolins. Recently, members of the cavin protein family were found to be required, in concert with caveolins, for the formation and function of caveolae. Caveolins have a paradoxical role in the development of cancer formation. They have been involved in both tumor suppression and oncogenesis, depending on tumor type and progress stage. High expression of caveolins and cavins leads to inhibition of cancer-related pathways, such as growth factor signaling pathways. However, certain cancer cells that express caveolins and cavins have been shown to be more aggressive and metastatic because of their increased potential for anchorage-independent growth. Here, we will survey the functional roles of caveolins and of different cavin family members in cancer regulation.
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Affiliation(s)
- Reshu Gupta
- Laboratoire d'Oncologie Moléculaire, Centre de Recherche BioMed, Département de Chimie, Université du Québec à Montréal, Québec H3C 3P8, Canada.
| | - Chirine Toufaily
- Laboratoire d'Oncologie Moléculaire, Centre de Recherche BioMed, Département de Chimie, Université du Québec à Montréal, Québec H3C 3P8, Canada
| | - Borhane Annabi
- Laboratoire d'Oncologie Moléculaire, Centre de Recherche BioMed, Département de Chimie, Université du Québec à Montréal, Québec H3C 3P8, Canada
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36
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Kulkarni YM, Liu C, Qi Q, Zhu Y, Klinke DJ, Liu J. Differential proteomic analysis of caveolin-1 KO cells reveals Sh2b3 and Clec12b as novel interaction partners of caveolin-1 and Capns1 as a potential mediator of caveolin-1-induced apoptosis. Analyst 2014; 138:6986-96. [PMID: 24091439 DOI: 10.1039/c3an36819j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Caveolin-1 (Cav1) is a small scaffolding protein involved in a variety of cellular functions, including cell signaling, lipid transport and membrane traffic. The objective of this study was to use comparative proteomics to identify differentially expressed proteins in Cav1 knockout (KO) mouse embryonic fibroblasts. These deregulated proteins were then analyzed using systems biology tools to gain insight into the local network properties and to identify the interaction partners of Cav1. We identified five proteins that were up-regulated and ten proteins that were down-regulated in Cav1 KO cells, suggesting that the local network behaves as a complex system. Protein interaction network analysis revealed two proteins, Sh2b3 and Clec12b, as novel interaction partners of Cav1. Functional annotation showed apoptosis signaling as the most significant pathway. To validate this functional annotation, Cav1 KO cells showed more than 1.5-fold increase in caspase-3 activity over wild type cells upon apoptotic stimulation. We also found that calpain small subunit 1 is up-regulated in Cav1 KO cells and directly influences the cell response to apoptotic stimuli. Moreover, Capns1 was reduced in Cav1 KO cells following re-expression of Cav1, and suppression of Capns1 expression in Cav1 KO cells significantly inhibited the cells to apoptotic stimuli, as measured by caspase 3 activity. In conclusion, our results suggest that Sh2b3 and Clec12b functionally interact with Cav1 and that calpain small subunit 1 may mediate Cav1-induced apoptosis.
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Affiliation(s)
- Yogesh M Kulkarni
- Department of Chemical Engineering, College of Engineering and Mineral Resources, West Virginia University, Morgantown, West Virginia 26506, USA
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Caveolin-1 is required for kinase suppressor of Ras 1 (KSR1)-mediated extracellular signal-regulated kinase 1/2 activation, H-RasV12-induced senescence, and transformation. Mol Cell Biol 2014; 34:3461-72. [PMID: 25002533 DOI: 10.1128/mcb.01633-13] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The molecular scaffold kinase suppressor of Ras 1 (KSR1) regulates the activation of the Raf/MEK/extracellular signal-regulated kinase (ERK) signal transduction pathway. KSR1 disruption in mouse embryo fibroblasts (MEFs) abrogates growth factor-induced ERK activation, H-Ras(V12)-induced replicative senescence, and H-Ras(V12)-induced transformation. Caveolin-1 has been primarily described as a major component of the coating structure of caveolae, which can serve as a lipid binding adaptor protein and coordinates the assembly of Ras, Raf, MEK, and ERK. In this study, we show that KSR1 interacts with caveolin-1 and is responsible for MEK and ERK redistribution to caveolin-1-rich fractions. The interaction between KSR1 and caveolin-1 is essential for optimal activation of ERK as a KSR1 mutant unable to interact with caveolin-1 does not efficiently mediate growth factor-induced ERK activation at the early stages of pathway activation. Furthermore, abolishing the KSR1-caveolin-1 interaction increases growth factor demands to promote H-Ras(V12)-induced proliferation and has adverse effects on H-Ras(V12)-induced cellular senescence and transformation. These data show that caveolin-1 is necessary for optimal KSR1-dependent ERK activation by growth factors and oncogenic Ras.
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The interaction of enolase-1 with caveolae-associated proteins regulates its subcellular localization. Biochem J 2014; 460:295-307. [PMID: 24628430 DOI: 10.1042/bj20130945] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cell-surface-associated proteolysis plays a crucial role in embryonic development, monocyte/macrophage recruitment and tumour cell invasion. The glycolytic enzyme ENO-1 (enolase-1) is translocated from the cytoplasm to the cell surface, where it binds PLG (plasminogen) to enhance pericellular plasmin production and cell motility. In the present study, ENO-1 was found to localize to a specialized subset of lipid rafts called caveolae as demonstrated by fluorescence confocal microscopy and sucrose gradient ultracentrifugation. Co-immunoprecipitation studies revealed that ENO-1 interacts with Cav-1 (caveolin-1), but not with Cav-2, via the CSD (Cav-scaffolding domain). Moreover, an evolutionarily conserved CBM (Cav-binding motif) F296DQDDWGAW304 was identified within ENO-1. The point mutation W301A within the ENO-1 CBM was, however, not sufficient to disrupt ENO-1-Cav-1 interaction, whereas the mutations F296A and W304A markedly affected ENO-1 protein expression. Furthermore, ENO-1 was found associated with Annx2 (annexin 2), representing another caveolar protein, and this interaction was dependent on Cav-1 expression. Knockdown of Cav-1 and Annx2 markedly decreased cell surface expression of ENO-1. ENO-1 overexpression increased cell migration and invasion in a Cav-1-dependent manner. Thus the differential association of ENO-1 with caveolar proteins regulates ENO-1 subcellular localization and, consequently, ENO-1-dependent cell migration and invasion.
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Grove LM, Southern BD, Jin TH, White KE, Paruchuri S, Harel E, Wei Y, Rahaman SO, Gladson CL, Ding Q, Craik CS, Chapman HA, Olman MA. Urokinase-type plasminogen activator receptor (uPAR) ligation induces a raft-localized integrin signaling switch that mediates the hypermotile phenotype of fibrotic fibroblasts. J Biol Chem 2014; 289:12791-804. [PMID: 24644284 DOI: 10.1074/jbc.m113.498576] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The urokinase-type plasminogen activator receptor (uPAR) is a glycosylphosphatidylinositol-linked membrane protein with no cytosolic domain that localizes to lipid raft microdomains. Our laboratory and others have documented that lung fibroblasts from patients with idiopathic pulmonary fibrosis (IPF) exhibit a hypermotile phenotype. This study was undertaken to elucidate the molecular mechanism whereby uPAR ligation with its cognate ligand, urokinase, induces a motile phenotype in human lung fibroblasts. We found that uPAR ligation with the urokinase receptor binding domain (amino-terminal fragment) leads to enhanced migration of fibroblasts on fibronectin in a protease-independent, lipid raft-dependent manner. Ligation of uPAR with the amino-terminal fragment recruited α5β1 integrin and the acylated form of the Src family kinase, Fyn, to lipid rafts. The biological consequences of this translocation were an increase in fibroblast motility and a switch of the integrin-initiated signal pathway for migration away from the lipid raft-independent focal adhesion kinase pathway and toward a lipid raft-dependent caveolin-Fyn-Shc pathway. Furthermore, an integrin homologous peptide as well as an antibody that competes with β1 for uPAR binding have the ability to block this effect. In addition, its relative insensitivity to cholesterol depletion suggests that the interactions of α5β1 integrin and uPAR drive the translocation of α5β1 integrin-acylated Fyn signaling complexes into lipid rafts upon uPAR ligation through protein-protein interactions. This signal switch is a novel pathway leading to the hypermotile phenotype of IPF patient-derived fibroblasts, seen with uPAR ligation. This uPAR dependent, fibrotic matrix-selective, and profibrotic fibroblast phenotype may be amenable to targeted therapeutics designed to ameliorate IPF.
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Mekkawy AH, Pourgholami MH, Morris DL. Involvement of urokinase-type plasminogen activator system in cancer: an overview. Med Res Rev 2014; 34:918-56. [PMID: 24549574 DOI: 10.1002/med.21308] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Currently, there are several studies supporting the role of urokinase-type plasminogen activator (uPA) system in cancer. The association of uPA to its receptor triggers the conversion of plasminogen into plasmin. This process is regulated by the uPA inhibitors (PAI-1 and PAI-2). Plasmin promotes degradation of basement membrane and extracellular matrix (ECM) components as well as activation of ECM latent matrix metalloproteases. Degradation and remodeling of the surrounding tissues is crucial in the early steps of tumor progression by facilitating expansion of the tumor mass, release of tumor growth factors, activation of cytokines as well as induction of tumor cell proliferation, migration, and invasion. Hence, many tumors showed a correlation between uPA system component levels and tumor aggressiveness and survival. Therefore, this review summarizes the structure of the uPA system, its contribution to cancer progression, and the clinical relevance of uPA family members in cancer diagnosis. In addition, the review evaluates the significance of uPA system in the development of cancer-targeted therapies.
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Affiliation(s)
- Ahmed H Mekkawy
- Department of Surgery, Cancer Research Laboratories, St. George Hospital, University of New South Wales, Sydney, NSW 2217, Australia
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Aoyama D, Hashimoto N, Sakamoto K, Kohnoh T, Kusunose M, Kimura M, Ogata R, Imaizumi K, Kawabe T, Hasegawa Y. Involvement of TGFβ-induced phosphorylation of the PTEN C-terminus on TGFβ-induced acquisition of malignant phenotypes in lung cancer cells. PLoS One 2013; 8:e81133. [PMID: 24278390 PMCID: PMC3838341 DOI: 10.1371/journal.pone.0081133] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 10/18/2013] [Indexed: 01/09/2023] Open
Abstract
Transforming growth factor β (TGFβ) derived from the tumor microenvironment induces malignant phenotypes such as epithelial-mesenchymal transition (EMT) and aberrant cell motility in lung cancers. TGFβ-induced translocation of β-catenin from E-cadherin complexes into the cytoplasm is involved in the transcription of EMT target genes. PTEN (phosphatase and tensin homologue deleted from chromosome 10) is known to exert phosphatase activity by binding to E-cadherin complexes via β-catenin, and recent studies suggest that phosphorylation of the PTEN C-terminus tail might cause loss of this PTEN phosphatase activity. However, whether TGFβ can modulate both β-catenin translocation and PTEN phosphatase activity via phosphorylation of the PTEN C-terminus remains elusive. Furthermore, the role of phosphorylation of the PTEN C-terminus in TGFβ-induced malignant phenotypes has not been evaluated. To investigate whether modulation of phosphorylation of the PTEN C-terminus can regulate malignant phenotypes, here we established lung cancer cells expressing PTEN protein with mutation of phosphorylation sites in the PTEN C-terminus (PTEN4A). We found that TGFβ stimulation yielded a two-fold increase in the phosphorylated -PTEN/PTEN ratio. Expression of PTEN4A repressed TGFβ-induced EMT and cell motility even after snail expression. Our data showed that PTEN4A might repress EMT through complete blockade of β-catenin translocation into the cytoplasm, besides the inhibitory effect of PTEN4A on TGFβ-induced activation of smad-independent signaling pathways. In a xenograft model, the tumor growth ratio was repressed in cells expressing PTEN4A. Taken together, these data suggest that phosphorylation sites in the PTEN C-terminus might be a therapeutic target for TGFβ-induced malignant phenotypes in lung cancer cells.
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Affiliation(s)
- Daisuke Aoyama
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naozumi Hashimoto
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
- * E-mail:
| | - Koji Sakamoto
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takashi Kohnoh
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masaaki Kusunose
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Motohiro Kimura
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ryo Ogata
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine and Allergy, Fujita Health University, Toyoake, Japan
| | - Tsutomu Kawabe
- Department of Medical Technology, Nagoya University Graduate School of Health Science, Nagoya, Japan
| | - Yoshinori Hasegawa
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Stock C, Ludwig FT, Hanley PJ, Schwab A. Roles of ion transport in control of cell motility. Compr Physiol 2013; 3:59-119. [PMID: 23720281 DOI: 10.1002/cphy.c110056] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cell motility is an essential feature of life. It is essential for reproduction, propagation, embryonic development, and healing processes such as wound closure and a successful immune defense. If out of control, cell motility can become life-threatening as, for example, in metastasis or autoimmune diseases. Regardless of whether ciliary/flagellar or amoeboid movement, controlled motility always requires a concerted action of ion channels and transporters, cytoskeletal elements, and signaling cascades. Ion transport across the plasma membrane contributes to cell motility by affecting the membrane potential and voltage-sensitive ion channels, by inducing local volume changes with the help of aquaporins and by modulating cytosolic Ca(2+) and H(+) concentrations. Voltage-sensitive ion channels serve as voltage detectors in electric fields thus enabling galvanotaxis; local swelling facilitates the outgrowth of protrusions at the leading edge while local shrinkage accompanies the retraction of the cell rear; the cytosolic Ca(2+) concentration exerts its main effect on cytoskeletal dynamics via motor proteins such as myosin or dynein; and both, the intracellular and the extracellular H(+) concentration modulate cell migration and adhesion by tuning the activity of enzymes and signaling molecules in the cytosol as well as the activation state of adhesion molecules at the cell surface. In addition to the actual process of ion transport, both, channels and transporters contribute to cell migration by being part of focal adhesion complexes and/or physically interacting with components of the cytoskeleton. The present article provides an overview of how the numerous ion-transport mechanisms contribute to the various modes of cell motility.
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Affiliation(s)
- Christian Stock
- Institute of Physiology II, University of Münster, Münster, Germany.
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Trimarchi H. Primary focal and segmental glomerulosclerosis and soluble factor urokinase-type plasminogen activator receptor. World J Nephrol 2013; 2:103-110. [PMID: 24255893 PMCID: PMC3832866 DOI: 10.5527/wjn.v2.i4.103] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 09/24/2013] [Accepted: 10/20/2013] [Indexed: 02/06/2023] Open
Abstract
Primary focal and segmental glomerulosclerosis (FSGS) may be due to genetic or acquired etiologies and is a common cause of nephrotic syndrome with high morbidity that often leads to end-stage renal failure. The different available therapeutic approaches are unsuccessful, in part due to partially deciphered heterogeneous and complex pathophysiological mechanisms. Moreover, the term FSGS, even in its primary form, comprises a histological description shared by a number of different causes with completely different molecular pathways of disease. This review focuses on the latest developments regarding the pathophysiology of primary acquired FSGS caused by soluble factor urokinase type plasminogen activator receptor, a circulating permeability factor involved in proteinuria and edema formation, and describes recent advances with potential success in therapy.
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Human sprouty1 suppresses urokinase receptor-stimulated cell migration and invasion. ISRN BIOCHEMISTRY 2013; 2013:598251. [PMID: 25937961 PMCID: PMC4393002 DOI: 10.1155/2013/598251] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 08/13/2013] [Indexed: 11/28/2022]
Abstract
The urokinase-type plasminogen activator receptor (uPAR) has been implicated in several processes in tumor progression including cell migration and invasion in addition to initiation of signal transduction. Since uPAR lacks a transmembrane domain, it uses the interaction with other proteins to modulate intracellular signal transduction. We have previously identified hSpry1 as a partner protein of uPAR, suggesting a physiological role for hSpry1 in the regulation of uPAR signal transduction. In this study, hSpry1 was found to colocalize with uPAR upon stimulation with epidermal growth factor (EGF), urokinase (uPA), or its amino terminal fragment (uPA-ATF), implicating a physiological role of hSpry1 in regulation of uPAR signalling pathway. Moreover, hSpry1 was able to inhibit uPAR-stimulated cell migration in HEK293/uPAR, breast carcinoma, and colorectal carcinoma cells. In addition, hSpry1 was found to inhibit uPAR-stimulated cell invasion in breast carcinoma and osteosarcoma cell lines. Increasing our understanding of how hSpry1 negatively regulates uPAR-stimulated cellular functions may determine a distinctive role for hSpry1 in tumour suppression.
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Zemljič Jokhadar Š, Majhenc J, Svetina S, Batista U. Positioning of integrin β1, caveolin-1 and focal adhesion kinase on the adhered membrane of spreading cells. Cell Biol Int 2013; 37:1276-84. [DOI: 10.1002/cbin.10155] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 07/08/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Špela Zemljič Jokhadar
- Institute of Biophysics; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
| | - Janja Majhenc
- Institute of Biophysics; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
| | - Saša Svetina
- Institute of Biophysics; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
- Jožef Stefan Institute; Ljubljana Slovenia
| | - Urška Batista
- Institute of Biophysics; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
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Noh H, Hong S, Huang S. Role of urokinase receptor in tumor progression and development. Am J Cancer Res 2013; 3:487-95. [PMID: 23843896 PMCID: PMC3706692 DOI: 10.7150/thno.4218] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 08/15/2012] [Indexed: 12/21/2022] Open
Abstract
Elevated level of urokinase receptor (uPAR) is detected in various aggressive cancer types and is closely associated with poor prognosis of cancers. Binding of uPA to uPAR triggers the conversion of plasminogen to plasmin and the subsequent activation of metalloproteinases. These events confer tumor cells with the capability to degrade the components of the surrounding extracellular matrix, thus contributing to tumor cell invasion and metastasis. uPA-uPAR interaction also elicits signals that stimulate cell proliferation/survival and the expression of tumor-promoting genes, thus assisting tumor development. In addition to its interaction with uPA, uPAR also interacts with vitronectin and this interaction promotes cancer metastasis by activating Rac and stimulating cell migration. Although underlying mechanisms are yet to be fully elucidated, uPAR has been shown to facilitate epithelial-mesenchymal transition (EMT) and induce cancer stem cell-like properties in breast cancer cells. The fact that uPAR lacks intracellular domain suggests that its signaling must be mediated through its co-receptors. Indeed, uPAR interacts with diverse transmembrane proteins including integrins, ENDO180, G protein-coupled receptors and growth factor receptors in cancer cells and these interactions are proven to be critical for the role of uPAR in tumorigenesis. Inhibitory peptide that prevents uPA-uPAR interaction has shown the promise to prolong patients' survival in the early stage of clinical trial. The importance of uPAR's co-receptor in uPAR's tumor-promoting effects implicate that anti-cancer therapeutic agents may also be developed by disrupting the interactions between uPAR and its functional partners.
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Rao JS, Gujrati M, Chetty C. Tumor-associated soluble uPAR-directed endothelial cell motility and tumor angiogenesis. Oncogenesis 2013; 2:e53. [PMID: 23797476 PMCID: PMC3740303 DOI: 10.1038/oncsis.2013.19] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The expression of urokinase-type plasminogen activator (uPA) receptor (uPAR) correlates with the malignant phenotype of various cancers. The soluble form of uPAR (s-uPAR) is present in the circulation of cancer patients, but the role of s-uPAR in endothelial cell migration is poorly understood. Therefore, we examined the role of tumor-associated s-uPAR on endothelial cell motility and angiogenesis. Here, we present evidence that tumor-associated s-uPAR augments the migration of human umbilical vein endothelial cells (HUVECs). When grown on tumor-conditioned medium, the membrane fraction of HUVECs had increased localization of s-uPAR onto its cell membrane. Colocalization studies for GM1 ganglioside receptor and uPAR further demonstrated s-uPAR recruitment onto lipid rafts of HUVECs. Immunoblot analysis for uPAR in lipid raft fractions confirmed s-uPAR recruiting onto HUVECs' membrane. Further, s-uPAR induced Rac1-mediated cell migration while either function-blocking uPAR antibodies or dominant-negative mutant Rac1 expression in HUVECs-mitigated s-uPAR-enhanced cell migration. In addition, orthotopic implantation of uPAR-overexpressing cells resulted in a significant increase in circulating s-uPAR in blood serum and invasive nature of tumor and tumor vasculature in mice. Collectively, this data provide insight into tumor-associated s-uPAR-directed migration of endothelial cells and its subsequent influence on tumor angiogenesis.
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Affiliation(s)
- J S Rao
- 1] Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, USA [2] Department of Neurosurgery, University of Illinois College of Medicine at Peoria, Peoria, IL, USA
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Immunocytochemical and biochemical detection of the urokinase-type plasminogen activator receptor (uPAR) in the rat tooth germ and in lipid rafts of PMA-stimulated dental epithelial cells. Histochem Cell Biol 2013; 140:649-58. [DOI: 10.1007/s00418-013-1109-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2013] [Indexed: 11/25/2022]
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49
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Senetta R, Stella G, Pozzi E, Sturli N, Massi D, Cassoni P. Caveolin-1 as a promoter of tumour spreading: when, how, where and why. J Cell Mol Med 2013; 17:325-36. [PMID: 23521716 PMCID: PMC3823014 DOI: 10.1111/jcmm.12030] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/15/2013] [Indexed: 11/29/2022] Open
Abstract
Caveolae are non-clathrin invaginations of the plasma membrane in most cell types; they are involved in signalling functions and molecule trafficking, thus modulating several biological functions, including cell growth, apoptosis and angiogenesis. The major structural protein in caveolae is caveolin-1, which is known to act as a key regulator in cancer onset and progression through its role as a tumour suppressor. Caveolin-1 can also promote cell proliferation, survival and metastasis as well as chemo- and radioresistance. Here, we discuss recent findings and novel concepts that support a role for caveolin-1 in cancer development and its distant spreading. We also address the potential application of caveolin-1 in tumour therapy and diagnosis.
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Affiliation(s)
- Rebecca Senetta
- Department of Medical Sciences, University of Turin, Turin, Italy
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50
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Gortazar AR, Martin-Millan M, Bravo B, Plotkin LI, Bellido T. Crosstalk between caveolin-1/extracellular signal-regulated kinase (ERK) and β-catenin survival pathways in osteocyte mechanotransduction. J Biol Chem 2013; 288:8168-8175. [PMID: 23362257 PMCID: PMC3605635 DOI: 10.1074/jbc.m112.437921] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 12/19/2012] [Indexed: 01/29/2023] Open
Abstract
Osteocyte viability is a critical determinant of bone strength and is promoted by both mechanical stimulation and activation of the Wnt signaling pathway. Earlier studies demonstrated that both stimuli promote survival of osteocytes by activating the ERKs. Here, we show that there is interaction between the caveolin-1/ERK and Wnt/β-catenin signaling pathways in the transduction of mechanical cues into osteocyte survival. Thus, ERK nuclear translocation and anti-apoptosis induced by mechanical stimulation are abolished by the Wnt antagonist Dkk1 and the β-catenin degradation stimulator Axin2. Conversely, GSK3β phosphorylation and β-catenin accumulation induced by mechanical stimulation are abolished by either pharmacologic inhibition of ERKs or silencing caveolin-1. In contrast, the canonical Wnt signaling inhibitor dominant-negative T cell factor does not alter ERK nuclear translocation or survival induced by mechanical stimulation. These findings demonstrate that β-catenin accumulation is an essential component of the mechanotransduction machinery in osteocytes, albeit β-catenin/T cell factor-mediated transcription is not required. The simultaneous requirement of β-catenin for ERK activation and of ERK activation for β-catenin accumulation suggests a bidirectional crosstalk between the caveolin-1/ERK and Wnt/β-catenin pathways in mechanotransduction leading to osteocyte survival.
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Affiliation(s)
- Arancha R Gortazar
- Institute of Applied Molecular Medicine (IMMA), San Pablo-CEU University School of Medicine, 28003 Madrid, Spain
| | - Marta Martin-Millan
- Instituto de Formación e Investigación Marqués Valdecilla (IFIVAV), 39011 Santander, Spain
| | - Beatriz Bravo
- Institute of Applied Molecular Medicine (IMMA), San Pablo-CEU University School of Medicine, 28003 Madrid, Spain
| | - Lilian I Plotkin
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202
| | - Teresita Bellido
- Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202; Division of Endocrinology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202.
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