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Lim JE, Bernatchez P, Nabi IR. Scaffolds and the scaffolding domain: an alternative paradigm for caveolin-1 signaling. Biochem Soc Trans 2024; 52:947-959. [PMID: 38526159 PMCID: PMC11088920 DOI: 10.1042/bst20231570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/10/2024] [Accepted: 03/11/2024] [Indexed: 03/26/2024]
Abstract
Caveolin-1 (Cav1) is a 22 kDa intracellular protein that is the main protein constituent of bulb-shaped membrane invaginations known as caveolae. Cav1 can be also found in functional non-caveolar structures at the plasma membrane called scaffolds. Scaffolds were originally described as SDS-resistant oligomers composed of 10-15 Cav1 monomers observable as 8S complexes by sucrose velocity gradient centrifugation. Recently, cryoelectron microscopy (cryoEM) and super-resolution microscopy have shown that 8S complexes are interlocking structures composed of 11 Cav1 monomers each, which further assemble modularly to form higher-order scaffolds and caveolae. In addition, Cav1 can act as a critical signaling regulator capable of direct interactions with multiple client proteins, in particular, the endothelial nitric oxide (NO) synthase (eNOS), a role believed by many to be attributable to the highly conserved and versatile scaffolding domain (CSD). However, as the CSD is a hydrophobic domain located by cryoEM to the periphery of the 8S complex, it is predicted to be enmeshed in membrane lipids. This has led some to challenge its ability to interact directly with client proteins and argue that it impacts signaling only indirectly via local alteration of membrane lipids. Here, based on recent advances in our understanding of higher-order Cav1 structure formation, we discuss how the Cav1 CSD may function through both lipid and protein interaction and propose an alternate view in which structural modifications to Cav1 oligomers may impact exposure of the CSD to cytoplasmic client proteins, such as eNOS.
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Affiliation(s)
- John E. Lim
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- Department of Anesthesiology, Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia (UBC), 2176 Health Sciences Mall, Room 217, Vancouver, BC V6T 1Z3, Canada
| | - Pascal Bernatchez
- Department of Anesthesiology, Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia (UBC), 2176 Health Sciences Mall, Room 217, Vancouver, BC V6T 1Z3, Canada
- Centre for Heart and Lung Innovation, St. Paul's Hospital, Vancouver, Canada
| | - Ivan R. Nabi
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- School of Biomedical Engineering, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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2
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Peruzzu D, Boussadia Z, Fratini F, Spadaro F, Bertuccini L, Sanchez M, Carollo M, Matarrese P, Falchi M, Iosi F, Raggi C, Parolini I, Carè A, Sargiacomo M, Gagliardi MC, Fecchi K. Inhibition of cholesterol transport impairs Cav-1 trafficking and small extracellular vesicles secretion, promoting amphisome formation in melanoma cells. Traffic 2023; 24:76-94. [PMID: 36519961 DOI: 10.1111/tra.12878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/22/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022]
Abstract
Caveolin-1 (Cav-1) is a fundamental constituent of caveolae, whose functionality and structure are strictly dependent on cholesterol. In this work the U18666A inhibitor was used to study the role of cholesterol transport in the endosomal degradative-secretory system in a metastatic human melanoma cell line (WM266-4). We found that U18666A induces a shift of Cav-1 from the plasma membrane to the endolysosomal compartment, which is involved, through Multi Vesicular Bodies (MVBs), in the formation and release of small extracellular vesicles (sEVs). Moreover, this inhibitor induces an increase in the production of sEVs with chemical-physical characteristics similar to control sEVs but with a different protein composition (lower expression of Cav-1 and increase of LC3II) and reduced transfer capacity on target cells. Furthermore, we determined that U18666A affects mitochondrial function and also cancer cell aggressive features, such as migration and invasion. Taken together, these results indicate that the blockage of cholesterol transport, determining the internalization of Cav-1, may modify sEVs secretory pathways through an increased fusion between autophagosomes and MVBs to form amphisome, which in turn fuses with the plasma membrane releasing a heterogeneous population of sEVs to maintain homeostasis and ensure correct cellular functionality.
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Affiliation(s)
- Daniela Peruzzu
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Zaira Boussadia
- National Center for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Federica Fratini
- Core Facilities Technical Scientific Service, Istituto Superiore di Sanità, Rome, Italy
| | - Francesca Spadaro
- Core Facilities Technical Scientific Service, Istituto Superiore di Sanità, Rome, Italy
| | - Lucia Bertuccini
- Core Facilities Technical Scientific Service, Istituto Superiore di Sanità, Rome, Italy
| | - Massimo Sanchez
- Core Facilities Technical Scientific Service, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Carollo
- Core Facilities Technical Scientific Service, Istituto Superiore di Sanità, Rome, Italy
| | - Paola Matarrese
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Mario Falchi
- National Center for HIV/AIDS Research, Istituto Superiore di Sanità, Rome
| | - Francesca Iosi
- Core Facilities Technical Scientific Service, Istituto Superiore di Sanità, Rome, Italy
| | - Carla Raggi
- National Center for the control and evaluation of Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Isabella Parolini
- Department Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Carè
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Massimo Sargiacomo
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | | | - Katia Fecchi
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
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Fortner A, Chera A, Tanca A, Bucur O. Apoptosis regulation by the tyrosine-protein kinase CSK. Front Cell Dev Biol 2022; 10:1078180. [PMID: 36578781 PMCID: PMC9792154 DOI: 10.3389/fcell.2022.1078180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/24/2022] [Indexed: 12/14/2022] Open
Abstract
C-terminal Src kinase (CSK) is a cytosolic tyrosine-protein kinase with an important role in regulating critical cellular decisions, such as cellular apoptosis, survival, proliferation, cytoskeletal organization and many others. Current knowledge on the CSK mechanisms of action, regulation and functions is still at an early stage, most of CSK's known actions and functions being mediated by the negative regulation of the SRC family of tyrosine kinases (SFKs) through phosphorylation. As SFKs play a vital role in apoptosis, cell proliferation and survival regulation, SFK inhibition by CSK has a pro-apoptotic effect, which is mediated by the inhibition of cellular signaling cascades controlled by SFKs, such as the MAPK/ERK, STAT3 and PI3K/AKT signaling pathways. Abnormal functioning of CSK and SFK activation can lead to diseases such as cancer, cardiovascular and neurological manifestations. This review describes apoptosis regulation by CSK, CSK inhibition of the SFKs and further explores the clinical relevance of CSK in important pathologies, such as cancer, autoimmune, autoinflammatory, neurologic diseases, hypertension and HIV/AIDS.
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Affiliation(s)
- Andra Fortner
- Victor Babes National Institute of Pathology, Bucharest, Romania,Medical School, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
| | - Alexandra Chera
- Victor Babes National Institute of Pathology, Bucharest, Romania,Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Antoanela Tanca
- Victor Babes National Institute of Pathology, Bucharest, Romania,Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania,*Correspondence: Octavian Bucur, ; Antoanela Tanca,
| | - Octavian Bucur
- Victor Babes National Institute of Pathology, Bucharest, Romania,Viron Molecular Medicine Institute, Boston, MA, United States,*Correspondence: Octavian Bucur, ; Antoanela Tanca,
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Bautista Saiz C, Mora Gómez MM, Polo JF, Gutiérrez Castañeda LD. La proteína 7 unida al receptor del factor de crecimiento (GRB7) en cáncer de mama. Repert Med Cir 2022. [DOI: 10.31260/repertmedcir.01217372.1119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
El cáncer de mama debe considerarse como un problema de salud pública ya que es la causa principal de muerte en mujeres en el mundo. Se conoce que es multifactorial y heterogéneo de manera que cada tumor tiene características genéticas y moleculares propias, lo cual se refleja en el comportamiento clínico, respuesta al tratamiento y pronóstico. La proteína 7 unida al receptor del factor de crecimiento (GRB7) hace parte de un grupo de proteínas GRB que median la interacción entre receptores tirosina cinasa y proteínas efectoras en algunas vías de señalización involucradas en transducción de señales, migración celular y angiogénesis. Esta proteína es codificada por el gen GRB7 localizado en el cromosoma 17 en el locus 17q11–21, cerca del gen ERBB2, lo que sugiere coamplificación y coexpresión de estos dos genes en el desarrollo del cáncer. Se ha visto que la proteína GRB7 por sí sola está presente en la biología molecular implícita del cáncer de mama, interviniendo en la proliferación y migración celular facilitando así la invasión y posibles metástasis. Se considera como un factor de mal pronóstico en esta enfermedad.
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Sawada A, Kawanishi K, Igarashi Y, Taneda S, Hattori M, Ishida H, Tanabe K, Koike J, Honda K, Nagashima Y, Nitta K. Overexpression of Plasmalemmal Vesicle-Associated Protein-1 Reflects Glomerular Endothelial Injury in Cases of Proliferative Glomerulonephritis with Monoclonal IgG Deposits. Kidney Int Rep 2022; 8:151-163. [PMID: 36644361 PMCID: PMC9831946 DOI: 10.1016/j.ekir.2022.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/30/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022] Open
Abstract
Introduction Proliferative glomerulonephritis with monoclonal IgG deposits (PGNMID) occasionally presents refractory nephrotic syndrome resulting in poor renal prognosis, but its etiology is not fully elucidated. Given that glomerular endothelial cell (GEC) stress or damage may lead to podocytopathy and subsequent proteinuria, as in thrombotic microangiopathy (TMA), diabetic kidney disease, and focal segmental glomerulosclerosis, we investigated the evidence of glomerular endothelial injury by evaluating the expression of plasmalemmal vesicle-associated protein-1 (PV-1), a component of caveolae in the cases of PGNMID. Methods We measured the immunofluorescent PV-1 intensities of 23 PGNMID cases and compared with those of primary membranoproliferative glomerulonephritis (MPGN) (n = 5) and IgA nephropathy (IgAN) (n = 54) cases. PV-1 localization was evaluated with Caveolin-1, and CD31 staining, and the ultrastructural analysis was performed using a low-vacuum scanning electron microscope (LVSEM). To check the association of podocyte injury, we also conducted 8-oxoguanine and Wilms tumor 1 (WT1) double stain. We then evaluated PV-1 expression in other glomerulitis and glomerulopathy such as lupus nephritis and minimal change disease. Results The intensity of glomerular PV-1 expression in PGNMID is significantly higher than that in the other glomerular diseases, although the intensity is not associated with clinical outcomes such as urinary protein levels or renal prognosis. Immunostaining and LVSEM analysis revealed that glomerular PV-1 expression is localized in GECs in PGNMID. 8-oxoguanine accumulation was detected in WT1-positive podocytes but not in PV-1-expressing GECs, suggesting GEC-derived podocyte injury in PGNMID. Conclusion PV-1 overexpression reflects glomerular endothelial injury, which could be associated with podocyte oxidative stress in PGNMID cases.
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Affiliation(s)
- Anri Sawada
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, Japan,Department of Surgical Pathology, Tokyo Women’s Medical University Hospital, Tokyo, Japan
| | - Kunio Kawanishi
- Department of Experimental Pathology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan,Correspondence: Kunio Kawanishi or Anri Sawada, Department of Experimental Pathology, Faculty of Medicine, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki Japan.
| | - Yuto Igarashi
- Department of Urology, Tokyo Women’s Medical University, Tokyo, Japan
| | - Sekiko Taneda
- Department of Surgical Pathology, Tokyo Women’s Medical University Hospital, Tokyo, Japan
| | - Motoshi Hattori
- Department of Pediatric Nephrology, Tokyo Women’s Medical University, Tokyo, Japan
| | - Hideki Ishida
- Department of Urology, Tokyo Women’s Medical University, Tokyo, Japan,Department of Organ Transplant Medicine, Tokyo Women’s Medical University, Tokyo, Japan
| | - Kazunari Tanabe
- Department of Urology, Tokyo Women’s Medical University, Tokyo, Japan
| | - Junki Koike
- Department of Pathology, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Kazuho Honda
- Department of Anatomy, Showa University School of Medicine, Tokyo, Japan
| | - Yoji Nagashima
- Department of Surgical Pathology, Tokyo Women’s Medical University Hospital, Tokyo, Japan
| | - Kosaku Nitta
- Department of Nephrology, Tokyo Women’s Medical University, Tokyo, Japan
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Meessen S, Najjar G, Azoitei A, Iben S, Bolenz C, Günes C. A Comparative Assessment of Replication Stress Markers in the Context of Telomerase. Cancers (Basel) 2022; 14:cancers14092205. [PMID: 35565334 PMCID: PMC9103842 DOI: 10.3390/cancers14092205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 04/26/2022] [Indexed: 02/05/2023] Open
Abstract
Simple Summary Genetic alterations such as oncogenic- or aneuploidy-inducing mutations can induce replication stress as a tumor protection mechansim. Previous data indicated that telomerase may ameliorate the cellular responses that induce replication stress. However, the mechanisms how this may occur are still unclear. In order to address this question, the accurate evaluation of replication stress in the presence and absence of telomerase is crucial. Therefore, we used telomerase negative normal human fibroblasts, as well as their telomerase positive counterparts to compare the suitability of three protein markers (pRPA2, γ-H2AX and 53BP1), which were previously reported to accumulate in response to harmful conditions leading to replication stress in cells. In summary, we find that pRPA2 is the most consistent and reliable marker for the detection of replication stress. Further, we demonstrated that the inhibition of the DNA-damage activated ATM and ATR kinases by specific small compounds impaired the accumulation of pRPA2 foci in the absence of telomerase. These data suggest that telomerase rescues the cells from replication stress upon supression of DNA damage induction by modulating the ATM and ATR signaling pathways, and may therefore support tumor formation of genetically unstable cells. Abstract Aberrant replication stress (RS) is a source of genome instability and has serious implications for cell survival and tumourigenesis. Therefore, the detection of RS and the identification of the underlying molecular mechanisms are crucial for the understanding of tumourigenesis. Currently, three protein markers—p33-phosphorylated replication protein A2 (pRPA2), γ-phosphorylated H2AX (γ-H2AX), and Tumor Protein P53 Binding Protein 1 (53BP1)—are frequently used to detect RS. However, to our knowledge, there is no report that compares their suitability for the detection of different sources of RS. Therefore, in this study, we evaluate the suitability of pRPA2, γ-H2AX, and 53BP1 for the detection of RS caused by different sources of RS. In addition, we examine their suitability as markers of the telomerase-mediated alleviation of RS. For these purposes, we use here telomerase-negative human fibroblasts (BJ) and their telomerase-immortalized counterparts (BJ-hTERT). Replication stress was induced by the ectopic expression of the oncogenic RAS mutant RASG12V (OI-RS), by the knockdown of ploidy-control genes ORP3 or MAD2 (AI-RS), and by treatment with hydrogen peroxide (ROS-induced RS). The level of RS was determined by immunofluorescence staining for pRPA2, γ-H2AX, and 53BP1. Evaluation of the staining results revealed that pRPA2- and γ-H2AX provide a significant and reliable assessment of OI-RS and AI-RS compared to 53BP1. On the other hand, 53BP1 and pRPA2 proved to be superior to γ-H2AX for the evaluation of ROS-induced RS. Moreover, the data showed that among the tested markers, pRPA2 is best suited to evaluate the telomerase-mediated suppression of all three types of RS. In summary, the data indicate that the choice of marker is important for the evaluation of RS activated through different conditions.
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Affiliation(s)
- Sabine Meessen
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (S.M.); (G.N.); (A.A.); (C.B.)
| | - Gregoire Najjar
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (S.M.); (G.N.); (A.A.); (C.B.)
| | - Anca Azoitei
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (S.M.); (G.N.); (A.A.); (C.B.)
| | - Sebastian Iben
- Department of Dermatology, Ulm University Hospital, 89081 Ulm, Germany;
| | - Christian Bolenz
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (S.M.); (G.N.); (A.A.); (C.B.)
| | - Cagatay Günes
- Department of Urology, Ulm University Hospital, 89081 Ulm, Germany; (S.M.); (G.N.); (A.A.); (C.B.)
- Correspondence: ; Tel.: +49-(0)731-500-58019; Fax: +49-(0)731-500-58093
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7
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Gubern-Mérida C, Comajoan P, Huguet G, García-Yebenes I, Lizasoain I, Moro MA, Puig-Parnau I, Sánchez JM, Serena J, Kádár E, Castellanos M. Cav-1 Protein Levels in Serum and Infarcted Brain Correlate with Hemorrhagic Volume in a Mouse Model of Thromboembolic Stroke, Independently of rt-PA Administration. Mol Neurobiol 2022; 59:1320-1332. [PMID: 34984586 DOI: 10.1007/s12035-021-02644-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 11/11/2021] [Indexed: 12/27/2022]
Abstract
Thrombolytic therapy with recombinant tissue plasminogen activator (rt-PA) is currently the only FDA-approved drug for acute ischemic stroke. However, its administration is still limited due to the associated increased risk of hemorrhagic transformation (HT). rt-PA may exacerbate blood-brain barrier (BBB) injury by several mechanisms that have not been fully elucidated. Caveolin-1 (Cav-1), a major structural protein of caveolae, has been linked to the endothelial barrier function. The effects of rt-PA on Cav-1 expression remain largely unknown. Here, Cav-1 protein expression after ischemic conditions, with or without rt-PA administration, was analyzed in a murine thromboembolic middle cerebral artery occlusion (MCAO) and in brain microvascular endothelial bEnd.3 cells subjected to oxygen/glucose deprivation (OGD). Our results show that Cav-1 is overexpressed in endothelial cells of infarcted area and in bEnd.3 cell line after ischemia but there is disagreement regarding rt-PA effects on Cav-1 expression between both experimental models. Delayed rt-PA administration significantly reduced Cav-1 total levels from 24 to 72 h after reoxygenation and increased pCav-1/Cav-1 at 72 h in the bEnd.3 cells while it did not modify Cav-1 immunoreactivity in the infarcted area at 24 h post-MCAO. Importantly, tissue Cav-1 positively correlated with Cav-1 serum levels at 24 h post-MCAO and negatively correlated with the volume of hemorrhage after infarction, the latter supporting a protective role of Cav-1 in cerebral ischemia. In addition, the negative association between baseline serum Cav-1 levels and hemorrhagic volume points to a potential usefulness of baseline serum Cav-1 levels to predict hemorrhagic volume, independently of rt-PA administration.
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Affiliation(s)
- Carme Gubern-Mérida
- Cerebrovascular Pathology Research Group, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Parc Hospitalari Martí i Julià, C/Dr. Castany s/n, M2 Building, 17190, Salt, Girona, Spain.,Cellular and Molecular Neurobiology Research Group, Department of Biology, University of Girona (UdG), Aulari Comú building, C/Maria Aurèlia Capmany 40, 17003, Girona, Spain
| | - Pau Comajoan
- Cerebrovascular Pathology Research Group, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Parc Hospitalari Martí i Julià, C/Dr. Castany s/n, M2 Building, 17190, Salt, Girona, Spain.,Cellular and Molecular Neurobiology Research Group, Department of Biology, University of Girona (UdG), Aulari Comú building, C/Maria Aurèlia Capmany 40, 17003, Girona, Spain
| | - Gemma Huguet
- Cerebrovascular Pathology Research Group, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Parc Hospitalari Martí i Julià, C/Dr. Castany s/n, M2 Building, 17190, Salt, Girona, Spain.,Cellular and Molecular Neurobiology Research Group, Department of Biology, University of Girona (UdG), Aulari Comú building, C/Maria Aurèlia Capmany 40, 17003, Girona, Spain
| | - Isaac García-Yebenes
- Neurovascular Research Unit, Department of Pharmacology and Toxicology and Instituto Universitario de Investigación en Neuroquímica (IUIN), Instituto de Investigación Hospital 12 de Octubre (i+12), Complutense University of Madrid (UCM), Pza. Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Ignacio Lizasoain
- Neurovascular Research Unit, Department of Pharmacology and Toxicology and Instituto Universitario de Investigación en Neuroquímica (IUIN), Instituto de Investigación Hospital 12 de Octubre (i+12), Complutense University of Madrid (UCM), Pza. Ramón y Cajal s/n, 28040, Madrid, Spain
| | - María Angeles Moro
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro 3, 28029, Madrid, Spain
| | - Irene Puig-Parnau
- Cellular and Molecular Neurobiology Research Group, Department of Biology, University of Girona (UdG), Aulari Comú building, C/Maria Aurèlia Capmany 40, 17003, Girona, Spain
| | - Juan Manuel Sánchez
- Cerebrovascular Pathology Research Group, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Parc Hospitalari Martí i Julià, C/Dr. Castany s/n, M2 Building, 17190, Salt, Girona, Spain.,Analytical and Environmental Chemistry Research Group, Department of Chemistry, University of Girona (UdG), C/Maria Aurèlia Capmany 69, 17003, Girona, Spain
| | - Joaquín Serena
- Cerebrovascular Pathology Research Group, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Parc Hospitalari Martí i Julià, C/Dr. Castany s/n, M2 Building, 17190, Salt, Girona, Spain.,Cellular and Molecular Neurobiology Research Group, Department of Biology, University of Girona (UdG), Aulari Comú building, C/Maria Aurèlia Capmany 40, 17003, Girona, Spain
| | - Elisabet Kádár
- Cerebrovascular Pathology Research Group, Department of Neurology, Girona Biomedical Research Institute (IDIBGI), Parc Hospitalari Martí i Julià, C/Dr. Castany s/n, M2 Building, 17190, Salt, Girona, Spain. .,Cellular and Molecular Neurobiology Research Group, Department of Biology, University of Girona (UdG), Aulari Comú building, C/Maria Aurèlia Capmany 40, 17003, Girona, Spain.
| | - Mar Castellanos
- Department of Neurology, A Coruña University Hospital/A Coruña Biomedical Research Institute, Xubias de Arriba 84, 15006A, Coruña, Spain.
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Gokani S, Bhatt LK. Caveolin-1: A promising therapeutic target for diverse diseases. Curr Mol Pharmacol 2021; 15:701-715. [PMID: 34847854 DOI: 10.2174/1874467214666211130155902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/26/2021] [Accepted: 05/24/2021] [Indexed: 11/22/2022]
Abstract
The plasma membrane of eukaryotic cells contains small flask-shaped invaginations known as caveolae that are involved in the regulation of cellular signaling. Caveolin-1 is a 21-24kDa protein localized in the caveolar membrane. Caveolin-1 (Cav-1) has been considered as a master regulator among the various signaling molecules. It has been emerging as a chief protein regulating cellular events associated with homeostasis, caveolae formation, and caveolae trafficking. In addition to the physiological role of cav-1, it has a complex role in the progression of various diseases. Caveolin-1 has been identified as a prognosticator in patients with cancer and has a dual role in tumorigenesis. The expression of Cav-1 in hippocampal neurons and synapses is related to neurodegeneration, cognitive decline, and aging. Despite the ubiquitous association of caveolin-1 in various pathological processes, the mechanisms associated with these events are still unclear. Caveolin-1 has a significant role in various events of the viral cycle, such as viral entry. This review will summarize the role of cav-1 in the development of cancer, neurodegeneration, glaucoma, cardiovascular diseases, and infectious diseases. The therapeutic perspectives involving clinical applications of Caveolin-1 have also been discussed. The understanding of the involvement of caveolin-1 in various diseased states provides insights into how it can be explored as a novel therapeutic target.
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Affiliation(s)
- Shivani Gokani
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Vile Parle (West), Mumbai. India
| | - Lokesh Kumar Bhatt
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Vile Parle (West), Mumbai. India
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9
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Malikova E, Kmecova Z, Doka G, Pivackova LB, Balis P, Trubacova S, Velasova E, Krenek P, Klimas J. Pioglitazone restores phosphorylation of downregulated caveolin-1 in right ventricle of monocrotaline-induced pulmonary hypertension. Clin Exp Hypertens 2021; 44:101-112. [PMID: 34747283 DOI: 10.1080/10641963.2021.1996589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Caveolin-1 (cav-1) plays a role in pulmonary arterial hypertension (PAH). Monocrotaline (MCT)-induced PAH is characterized by a loss of cav-1 in pulmonary arteries; however, less is known regarding its role in the hypertrophied right ventricle (RV). We aimed to characterize the role of cav-1 and Hsp90 in the RV of MCT-induced PAH and their impact on endothelial nitric oxide synthase (eNOS). Additionally, we focused on restoration of cav-1 expression with pioglitazone administration. METHODS Male 12-week-old Wistar rats were injected subcutaneously with monocrotaline (60 mg/kg). Selected proteins (cav-1, eNOS, pSer1177eNOS, Hsp90) and mRNAs (cav-1α, cav-1β, eNOS) were determined in the RV and left ventricle (LV) 4 weeks later. In a separate MCT-induced PAH study, pioglitazone (10 mg/kg/d, orally) administration started on day 14 after MCT. RESULTS MCT induced RV hypertrophy and lung enlargement. Cav-1 and pTyr14cav-1 were decreased in RV. Caveolin-1α (cav-1α) and caveolin-1β (cav-1β) mRNAs were decreased in both ventricles. Hsp90 protein was increased in RV. eNOS and pSer1177eNOS proteins were unchanged in the ventricles. eNOS mRNA was reduced in RV. Pioglitazone treatment increased oxygen saturation and pTyr14cav-1 vs. MCT group. CONCLUSIONS Restoration of pTyr14cav-1 did not lead to amelioration of the disease, nor did it prevent RV hypertrophy and fibrosis, which was indicated by an increase in Acta2, Nppb, Col3a1, and Tgfβ1 mRNA.
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Affiliation(s)
- Eva Malikova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Zuzana Kmecova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Gabriel Doka
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Lenka Bies Pivackova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Peter Balis
- Centre of Experimental Medicine, Slovak Academy of Sciences, Institute of Normal and Pathological Physiology, Bratislava, Slovakia
| | - Simona Trubacova
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Eva Velasova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Peter Krenek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
| | - Jan Klimas
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia
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10
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Kondo-Kawai A, Sakai T, Terao J, Mukai R. Suppressive effects of quercetin on hydrogen peroxide-induced caveolin-1 phosphorylation in endothelial cells. J Clin Biochem Nutr 2021; 69:28-36. [PMID: 34376911 PMCID: PMC8325769 DOI: 10.3164/jcbn.20-190] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 12/19/2020] [Indexed: 12/29/2022] Open
Abstract
Caveolin-1 is a major protein of the caveolae structure in vascular endothelial cell membrane. Phosphorylation of caveolin-1 is one of the initial events leading to exacerbation of vascular permeability caused by oxidative stress. Although quercetin is known to be an anti-atherosclerosis factor that acts as a dietary antioxidant, little is known about its role in the regulation of caveolin-1 phosphorylation. In this study, we investigated the inhibitory effect of quercetin on hydrogen peroxide-induced caveolin-1 phosphorylation in human umbilical vein endothelial cells. Quercetin inhibited caveolin-1 phosphorylation in cells pretreated with quercetin for 24 h and then exposed to hydrogen peroxide. However, quercetin 3-O-β-glucuronide, a conjugated metabolite of quercetin, did not exert this inhibitory effect. Exposure to hydrogen peroxide increased vascular permeability and reduced mRNA expression of the intercellular adhesion protein, vascular endothelial cadherin (VE-cadherin). By contrast, pretreatment with quercetin suppressed the increase in vascular permeability and decreased VE-cadherin expression. These results indicate that deconjugated quercetin can play a role in the prevention of altered vascular permeability under oxidative stress by suppressing caveolin-1 phosphorylation. Thus, dietary quercetin may be beneficial for the maintenance of endothelial cell function.
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Affiliation(s)
- Akari Kondo-Kawai
- Department of Food Science, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Tokushima 770-8513, Japan.,Department of Public Health and Applied Nutrition, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Tokushima 770-8503, Japan.,Laboratory of Nutritional Science, Shikoku Junior College, Tokushima, Tokushima 771-1192, Japan
| | - Tohru Sakai
- Department of Public Health and Applied Nutrition, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Tokushima 770-8503, Japan
| | - Junji Terao
- Department of Food Science, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Tokushima 770-8513, Japan.,Faculty of Clinical Nutrition and Dietetics, Konan Women's University, Kobe, Hyogo 658-0001, Japan
| | - Rie Mukai
- Department of Food Science, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Tokushima 770-8513, Japan.,Department of Food Science, Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Tokushima 770-8513, Japan
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11
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Yang C, He B, Dai W, Zhang H, Zheng Y, Wang X, Zhang Q. The role of caveolin-1 in the biofate and efficacy of anti-tumor drugs and their nano-drug delivery systems. Acta Pharm Sin B 2021; 11:961-977. [PMID: 33996409 PMCID: PMC8105775 DOI: 10.1016/j.apsb.2020.11.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/24/2020] [Accepted: 08/07/2020] [Indexed: 12/13/2022] Open
Abstract
As one of the most important components of caveolae, caveolin-1 is involved in caveolae-mediated endocytosis and transcytosis pathways, and also plays a role in regulating the cell membrane cholesterol homeostasis and mediating signal transduction. In recent years, the relationship between the expression level of caveolin-1 in the tumor microenvironment and the prognostic effect of tumor treatment and drug treatment resistance has also been widely explored. In addition, the interplay between caveolin-1 and nano-drugs is bidirectional. Caveolin-1 could determine the intracellular biofate of specific nano-drugs, preventing from lysosomal degradation, and facilitate them penetrate into deeper site of tumors by transcytosis; while some nanocarriers could also affect caveolin-1 levels in tumor cells, thereby changing certain biophysical function of cells. This article reviews the role of caveolin-1 in tumor prognosis, chemotherapeutic drug resistance, antibody drug sensitivity, and nano-drug delivery, providing a reference for the further application of caveolin-1 in nano-drug delivery systems.
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Key Words
- 5-FU, 5-fluorouracil
- ADC, antibody drug conjugates
- BBB, blood–brain barrier
- Biofate
- CAFs, cancer-associated fibroblasts
- CPT, camptothecin
- CSD, caveolin scaffolding domain
- CTB, cholera toxins B
- Cancer
- Caveolin-1
- Drug resistance
- ECM, extracellular matrix
- EGF, epidermal growth factor
- EGFR, epidermal growth factor receptor
- ER, endoplasmic reticulum
- ERK, extracellular regulated protein kinases
- FGF2, fibroblast growth factor 2
- GGT, γ-glutamyl transpeptidase
- GPI, glycosylphosphatidylinositol
- HER2, human epidermal growth factor receptor 2
- HMG-CoA, 3-hydroxy-3-methylglutaryl-coenzyme A
- HSA, human serum albumin
- IBC, infiltrating breast cancer
- IR, insulin receptor
- MAPK, mitogen-activated protein kinase
- MDR, multidrug resistance
- MSV, multistage nanovectors
- NPs, nanoparticles
- Nano-drug delivery systems
- PC, prostate cancer
- PDGF, platelet-derived growth factor
- PFS, progression free survival
- ROS, reactive oxygen species
- SCLC, small cell lung cancer
- SV40, simian virus 40
- Transcytosis
- cell SMA, styrene maleic acid
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12
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Kaya S, Wiesmann N, Goldschmitt J, Krüger M, Al-Nawas B, Heider J. Differences in the expression of caveolin-1 isoforms in cancer-associated and normal fibroblasts of patients with oral squamous cell carcinoma. Clin Oral Investig 2021; 25:5823-5831. [PMID: 33774714 PMCID: PMC8443514 DOI: 10.1007/s00784-021-03887-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/12/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVES For many years, tumor development has been viewed as a cell-autonomous process; however, today we know that the tumor microenvironment (TME) and especially cancer-associated fibroblasts (CAFs) significantly contribute to tumor progression. Caveolin-1 (Cav-1) is a scaffolding protein which is involved in several cancer-associated processes as important component of the caveolae. Our goal was to shed light on the expression of the two different isoforms of Cav-1 in normal fibroblasts (NFs) and CAFs of patients with oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS Fibroblasts from normal mucosa and CAFs were isolated and propagated in vitro. Gene expression of the different Cav-1 isoforms was assessed via quantitative real-time PCR (qPCR) and supplemented by protein expression analysis. RESULTS We could show that the Cav-1β isoform is more highly expressed in NFs and CAFs compared to Cav-1α. Furthermore, the different Cav-1 isoforms tended to be differently expressed in different tumor stages. However, this trend could not be seen consistently, which is in line with the ambiguous role of Cav-1 in tumor progression described in literature. Western blotting furthermore revealed that NFs and CAFs might differ in the oligomerization profile of the Cav-1 protein. CONCLUSION These differences in expression of Cav-1 between NFs and CAFs of patients with OSCC confirm that the protein might play a role in tumor progression and is of interest for further analyses. CLINICAL RELEVANCE Our findings support a possible role of the two isoforms of Cav-1 in the malignant transformation of OSCC.
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Affiliation(s)
- S Kaya
- Department of Oral and Maxillofacial Surgery Plastic Surgery, University Medical Center of the Johannes Gutenberg-University of Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Nadine Wiesmann
- Department of Oral and Maxillofacial Surgery Plastic Surgery, University Medical Center of the Johannes Gutenberg-University of Mainz, Augustusplatz 2, 55131, Mainz, Germany. .,Molecular Tumor Biology, Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center of the Johannes Gutenberg-University, Langenbeckstraße 1, 55131, Mainz, Germany.
| | - J Goldschmitt
- Department of Oral and Maxillofacial Surgery Plastic Surgery, University Medical Center of the Johannes Gutenberg-University of Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - M Krüger
- Department of Oral and Maxillofacial Surgery Plastic Surgery, University Medical Center of the Johannes Gutenberg-University of Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - B Al-Nawas
- Department of Oral and Maxillofacial Surgery Plastic Surgery, University Medical Center of the Johannes Gutenberg-University of Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - J Heider
- Department of Oral and Maxillofacial Surgery Plastic Surgery, University Medical Center of the Johannes Gutenberg-University of Mainz, Augustusplatz 2, 55131, Mainz, Germany
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13
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Yamakawa D, Katoh D, Kasahara K, Shiromizu T, Matsuyama M, Matsuda C, Maeno Y, Watanabe M, Nishimura Y, Inagaki M. Primary cilia-dependent lipid raft/caveolin dynamics regulate adipogenesis. Cell Rep 2021; 34:108817. [PMID: 33691104 DOI: 10.1016/j.celrep.2021.108817] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/28/2020] [Accepted: 02/11/2021] [Indexed: 12/14/2022] Open
Abstract
Primary cilia play a pivotal role in signal transduction and development and are known to serve as signaling hubs. Recent studies have shown that primary cilium dysfunction influences adipogenesis, but the mechanisms are unclear. Here, we show that mesenchymal progenitors C3H10T1/2 depleted of trichoplein, a key regulator of cilium formation, have significantly longer cilia than control cells and fail to differentiate into adipocytes. Mechanistically, the elongated cilia prevent caveolin-1- and/or GM3-positive lipid rafts from being assembled around the ciliary base where insulin receptor proteins accumulate, thereby inhibiting the insulin-Akt signaling. We further generate trichoplein knockout mice, in which adipogenic progenitors display elongated cilia and impair the lipid raft dynamics. The knockout mice on an extended high-fat diet exhibit reduced body fat and smaller adipocytes than wild-type (WT) mice. Overall, our results suggest a role for primary cilia in regulating adipogenic signal transduction via control of the lipid raft dynamics around cilia.
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Affiliation(s)
- Daishi Yamakawa
- Department of Physiology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Daisuke Katoh
- Department of Physiology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan; Department of Pathology and Matrix Biology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Kousuke Kasahara
- Department of Physiology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Takashi Shiromizu
- Department of Integrative Pharmacology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Makoto Matsuyama
- Division of Molecular Genetics, Shigei Medical Research Institute, 2117 Yamada, Minami-ku, Okayama 701-0202, Japan
| | - Chise Matsuda
- Department of Oncologic Pathology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Yumi Maeno
- Department of Physiology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Masatoshi Watanabe
- Department of Oncologic Pathology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Yuhei Nishimura
- Department of Integrative Pharmacology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan
| | - Masaki Inagaki
- Department of Physiology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
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14
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Buwa N, Kannan N, Kanade S, Balasubramanian N. Adhesion-dependent Caveolin-1 Tyrosine-14 phosphorylation is regulated by FAK in response to changing matrix stiffness. FEBS Lett 2021; 595:532-547. [PMID: 33314143 DOI: 10.1002/1873-3468.14025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/18/2020] [Accepted: 11/29/2020] [Indexed: 01/13/2023]
Abstract
Integrin-mediated adhesion regulates cellular responses to changes in the mechanical and biochemical properties of the extracellular matrix. Cell-matrix adhesion regulates caveolar endocytosis, dependent on caveolin 1 (Cav1) Tyr14 phosphorylation (pY14Cav1), to control anchorage-dependent signaling. We find that cell-matrix adhesion regulates pY14Cav1 levels in mouse fibroblasts. Biochemical fractionation reveals endogenous pY14Cav1 to be present in caveolae and focal adhesions (FA). Adhesion does not affect caveolar pY14Cav1, supporting its regulation at FA, in which PF-228-mediated inhibition of focal adhesion kinase (FAK) disrupts. Cell adhesion on 2D polyacrylamide matrices of increasing stiffness stimulates Cav1 phosphorylation, which is comparable to the phosphorylation of FAK. Inhibition of FAK across varying stiffnesses shows it regulates pY14Cav1 more prominently at higher stiffness. Taken together, these studies reveal the presence of FAK-pY14Cav1 crosstalk at FA, which is regulated by cell-matrix adhesion.
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Affiliation(s)
- Natasha Buwa
- Indian Institute of Science Education and Research, Pune, India
| | | | - Shaunak Kanade
- Indian Institute of Science Education and Research, Pune, India
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15
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Schianchi F, Glatz JFC, Navarro Gascon A, Nabben M, Neumann D, Luiken JJFP. Putative Role of Protein Palmitoylation in Cardiac Lipid-Induced Insulin Resistance. Int J Mol Sci 2020; 21:ijms21249438. [PMID: 33322406 PMCID: PMC7764417 DOI: 10.3390/ijms21249438] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 12/25/2022] Open
Abstract
In the heart, inhibition of the insulin cascade following lipid overload is strongly associated with contractile dysfunction. The translocation of fatty acid transporter CD36 (SR-B2) from intracellular stores to the cell surface is a hallmark event in the lipid-overloaded heart, feeding forward to intracellular lipid accumulation. Yet, the molecular mechanisms by which intracellularly arrived lipids induce insulin resistance is ill-understood. Bioactive lipid metabolites (diacyl-glycerols, ceramides) are contributing factors but fail to correlate with the degree of cardiac insulin resistance in diabetic humans. This leaves room for other lipid-induced mechanisms involved in lipid-induced insulin resistance, including protein palmitoylation. Protein palmitoylation encompasses the reversible covalent attachment of palmitate moieties to cysteine residues and is governed by protein acyl-transferases and thioesterases. The function of palmitoylation is to provide proteins with proper spatiotemporal localization, thereby securing the correct unwinding of signaling pathways. In this review, we provide examples of palmitoylations of individual signaling proteins to discuss the emerging role of protein palmitoylation as a modulator of the insulin signaling cascade. Second, we speculate how protein hyper-palmitoylations (including that of CD36), as they occur during lipid oversupply, may lead to insulin resistance. Finally, we conclude that the protein palmitoylation machinery may offer novel targets to fight lipid-induced cardiomyopathy.
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Affiliation(s)
- Francesco Schianchi
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
| | - Jan F. C. Glatz
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
- Department of Clinical Genetics, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands
| | - Artur Navarro Gascon
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
| | - Miranda Nabben
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
- Department of Clinical Genetics, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands
| | - Dietbert Neumann
- Department of Pathology, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands;
| | - Joost J. F. P. Luiken
- Department of Genetics & Cell Biology, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD Maastricht, The Netherlands; (F.S.); (J.F.C.G.); (A.N.G.); (M.N.)
- Department of Clinical Genetics, Maastricht University Medical Center+, 6202 AZ Maastricht, The Netherlands
- Correspondence: ; Tel.: +31-43-388-1998
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16
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de Trizio I, Errede M, d'Amati A, Girolamo F, Virgintino D. Expression of P-gp in Glioblastoma: What we can Learn from Brain Development. Curr Pharm Des 2020; 26:1428-1437. [PMID: 32186270 DOI: 10.2174/1381612826666200318130625] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 02/18/2020] [Indexed: 02/06/2023]
Abstract
P-Glycoprotein (P-gp) is a 170-kDa transmembrane glycoprotein that works as an efflux pump and confers multidrug resistance (MDR) in normal tissues and tumors, including nervous tissues and brain tumors. In the developing telencephalon, the endothelial expression of P-gp, and the subcellular localization of the transporter at the luminal endothelial cell (EC) plasma membrane are early hallmarks of blood-brain barrier (BBB) differentiation and suggest a functional BBB activity that may complement the placental barrier function and the expression of P-gp at the blood-placental interface. In early fetal ages, P-gp has also been immunolocalized on radial glia cells (RGCs), located in the proliferative ventricular zone (VZ) of the dorsal telencephalon and now considered to be neural progenitor cells (NPCs). RG-like NPCs have been found in many regions of the developing brain and have been suggested to give rise to neural stem cells (NSCs) of adult subventricular (SVZ) neurogenic niches. The P-gp immunosignal, associated with RG-like NPCs during cortical histogenesis, progressively decreases in parallel with the last waves of neuroblast migrations, while 'outer' RGCs and the deriving astrocytes do not stain for the efflux transporter. These data suggest that in human glioblastoma (GBM), P-gp expressed by ECs may be a negligible component of tumor MDR. Instead, tumor perivascular astrocytes may dedifferentiate and resume a progenitor-like P-gp activity, becoming MDR cells and contribute, together with perivascular P-gpexpressing glioma stem-like cells (GSCs), to the MDR profile of GBM vessels. In conclusion, the analysis of Pgp immunolocalization during brain development may contribute to identify the multiple cellular sources in the GBM vessels that may be involved in P-gp-mediated chemoresistance and can be responsible for GBM therapy failure and tumor recurrence.
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Affiliation(s)
- Ignazio de Trizio
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, Human Anatomy and Histology Unit, University of Bari, School of Medicine, Bari, Italy.,Department of Neurosurgery, Neurocenter of Southern Switzerland, Regional Hospital Lugano, Lugano, Switzerland
| | - Mariella Errede
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, Human Anatomy and Histology Unit, University of Bari, School of Medicine, Bari, Italy
| | - Antonio d'Amati
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, Human Anatomy and Histology Unit, University of Bari, School of Medicine, Bari, Italy
| | - Francesco Girolamo
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, Human Anatomy and Histology Unit, University of Bari, School of Medicine, Bari, Italy
| | - Daniela Virgintino
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, Human Anatomy and Histology Unit, University of Bari, School of Medicine, Bari, Italy
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17
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Buwa N, Mazumdar D, Balasubramanian N. Caveolin1 Tyrosine-14 Phosphorylation: Role in Cellular Responsiveness to Mechanical Cues. J Membr Biol 2020; 253:509-534. [PMID: 33089394 DOI: 10.1007/s00232-020-00143-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023]
Abstract
The plasma membrane is a dynamic lipid bilayer that engages with the extracellular microenvironment and intracellular cytoskeleton. Caveolae are distinct plasma membrane invaginations lined by integral membrane proteins Caveolin1, 2, and 3. Caveolae formation and stability is further supported by additional proteins including Cavin1, EHD2, Pacsin2 and ROR1. The lipid composition of caveolar membranes, rich in cholesterol and phosphatidylserine, actively contributes to caveolae formation and function. Post-translational modifications of Cav1, including its phosphorylation of the tyrosine-14 residue (pY14Cav1) are vital to its function in and out of caveolae. Cells that experience significant mechanical stress are seen to have abundant caveolae. They play a vital role in regulating cellular signaling and endocytosis, which could further affect the abundance and distribution of caveolae at the PM, contributing to sensing and/or buffering mechanical stress. Changes in membrane tension in cells responding to multiple mechanical stimuli affects the organization and function of caveolae. These mechanical cues regulate pY14Cav1 levels and function in caveolae and focal adhesions. This review, along with looking at the mechanosensitive nature of caveolae, focuses on the role of pY14Cav1 in regulating cellular mechanotransduction.
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Affiliation(s)
- Natasha Buwa
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| | - Debasmita Mazumdar
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| | - Nagaraj Balasubramanian
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
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18
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Rueda-Gensini L, Cifuentes J, Castellanos MC, Puentes PR, Serna JA, Muñoz-Camargo C, Cruz JC. Tailoring Iron Oxide Nanoparticles for Efficient Cellular Internalization and Endosomal Escape. Nanomaterials (Basel) 2020; 10:E1816. [PMID: 32932957 PMCID: PMC7559083 DOI: 10.3390/nano10091816] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/05/2020] [Accepted: 09/07/2020] [Indexed: 12/16/2022]
Abstract
Iron oxide nanoparticles (IONs) have been widely explored for biomedical applications due to their high biocompatibility, surface-coating versatility, and superparamagnetic properties. Upon exposure to an external magnetic field, IONs can be precisely directed to a region of interest and serve as exceptional delivery vehicles and cellular markers. However, the design of nanocarriers that achieve an efficient endocytic uptake, escape lysosomal degradation, and perform precise intracellular functions is still a challenge for their application in translational medicine. This review highlights several aspects that mediate the activation of the endosomal pathways, as well as the different properties that govern endosomal escape and nuclear transfection of magnetic IONs. In particular, we review a variety of ION surface modification alternatives that have emerged for facilitating their endocytic uptake and their timely escape from endosomes, with special emphasis on how these can be manipulated for the rational design of cell-penetrating vehicles. Moreover, additional modifications for enhancing nuclear transfection are also included in the design of therapeutic vehicles that must overcome this barrier. Understanding these mechanisms opens new perspectives in the strategic development of vehicles for cell tracking, cell imaging and the targeted intracellular delivery of drugs and gene therapy sequences and vectors.
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Affiliation(s)
- Laura Rueda-Gensini
- Department of Biomedical Engineering, School of Engineering, Universidad de Los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia; (L.R.-G.); (J.C.); (M.C.C.); (P.R.P.); (J.A.S.)
| | - Javier Cifuentes
- Department of Biomedical Engineering, School of Engineering, Universidad de Los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia; (L.R.-G.); (J.C.); (M.C.C.); (P.R.P.); (J.A.S.)
| | - Maria Claudia Castellanos
- Department of Biomedical Engineering, School of Engineering, Universidad de Los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia; (L.R.-G.); (J.C.); (M.C.C.); (P.R.P.); (J.A.S.)
| | - Paola Ruiz Puentes
- Department of Biomedical Engineering, School of Engineering, Universidad de Los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia; (L.R.-G.); (J.C.); (M.C.C.); (P.R.P.); (J.A.S.)
| | - Julian A. Serna
- Department of Biomedical Engineering, School of Engineering, Universidad de Los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia; (L.R.-G.); (J.C.); (M.C.C.); (P.R.P.); (J.A.S.)
| | - Carolina Muñoz-Camargo
- Department of Biomedical Engineering, School of Engineering, Universidad de Los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia; (L.R.-G.); (J.C.); (M.C.C.); (P.R.P.); (J.A.S.)
| | - Juan C. Cruz
- Department of Biomedical Engineering, School of Engineering, Universidad de Los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia; (L.R.-G.); (J.C.); (M.C.C.); (P.R.P.); (J.A.S.)
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide 5005, Australia
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19
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García-Palmero I, Shah N, Ali NA, Daly RJ, Wilce JA, Villalobo A. Partners of wild type Grb7 and a mutant lacking its calmodulin-binding domain. Arch Biochem Biophys 2020; 687:108386. [PMID: 32360748 DOI: 10.1016/j.abb.2020.108386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/01/2020] [Accepted: 04/18/2020] [Indexed: 11/28/2022]
Abstract
Growth factor receptor bound protein 7 (Grb7) is a mammalian adaptor protein participating in signaling pathways implicated in cell migration, metastatic invasion, cell proliferation and tumor-associated angiogenesis. We expressed tagged versions of wild type Grb7 and the mutant Grb7Δ, lacking its calmodulin-binding domain (CaM-BD), in human embryonic kidney (HEK) 293 cells and rat glioma C6 cells to identify novel binding partners using shot-gun proteomics. Among the new identified proteins, we validated the ubiquitin-ligase Nedd4 (neural precursor cell expressed developmentally down-regulated protein 4), the heat-shock protein Hsc70/HSPA8 (heat shock cognate protein 70) and the cell cycle regulatory protein caprin-1 (cytoplasmic activation/proliferation-associated protein 1) in rat glioma C6 cells. Our results suggest a role of Grb7 in pathways where these proteins are implicated. These include protein trafficking and degradation, stress-response, chaperone-mediated autophagy, apoptosis and cell proliferation.
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Affiliation(s)
- Irene García-Palmero
- Life Length, Parque Científico de Madrid, c/ Faraday 7, Campus de Cantoblanco, E-28049, Madrid, Spain
| | - Neelam Shah
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Victoria, 3800, Australia
| | - Naveid A Ali
- The Garvan Institute of Medical Research, Darlinghurst Sydney NSW, 2010, Australia
| | - Roger J Daly
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Victoria, 3800, Australia
| | - Jacqueline A Wilce
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Victoria, 3800, Australia.
| | - Antonio Villalobo
- Cancer and Human Molecular Genetics Area, Oto-Neurosurgery Research Group, University Hospital La Paz Research Institute (IdiPAZ), Paseo de la Castellana 261, E-28046, Madrid, Spain.
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20
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Abbasi M, Gupta VK, Chitranshi N, Gupta VB, Mirzaei M, Dheer Y, Garthwaite L, Zaw T, Parton RG, You Y, Graham SL. Caveolin-1 Ablation Imparts Partial Protection Against Inner Retinal Injury in Experimental Glaucoma and Reduces Apoptotic Activation. Mol Neurobiol 2020; 57:3759-3784. [PMID: 32578008 DOI: 10.1007/s12035-020-01948-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 05/13/2020] [Indexed: 12/16/2022]
Abstract
Retinal ganglion cell degeneration is a characteristic feature of glaucoma, and accordingly, protection of these cells constitutes a major therapeutic objective in the disease. Here, we demonstrate the key influence of caveolin (Cav) in regulating the inner retinal homeostasis in two models of experimentally elevated intraocular pressure (IOP). Two groups of Cav-1-/- and wild-type mice were used in the study. Animals were subjected to experimentally induced chronic and acutely elevated IOP and any changes in their retinal function were assessed by positive scotopic threshold response recordings. TUNEL and cleaved caspase-3 assays were performed to evaluate apoptotic changes in the retina while Brn3a immunostaining was used as a marker to assess and quantify ganglion cell layer (GCL) changes. H&E staining was carried out on retinal sections to evaluate histological differences in retinal laminar structure. Cav-1 ablation partially protected the inner retinal function in both chronic and acute models of elevated IOP. The protective effects of Cav-1 loss were also evident histologically by reduced loss of GCL density in both models. The phenotypic protection in Cav-1-/- glaucoma mice paralleled with increased TrkB phosphorylation and reduced endoplasmic reticulum stress markers and apoptotic activation in the inner retinas. This study corroborated previous findings of enhanced Shp2 phosphorylation in a chronic glaucoma model and established a novel role of Cav-1 in mediating activation of this phosphatase in the inner retina in vivo. Collectively, these findings highlight the critical involvement of Cav-1 regulatory mechanisms in ganglion cells in response to increased IOP, implicating Cav-1 as a potential therapeutic target in glaucoma.
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Affiliation(s)
- Mojdeh Abbasi
- Faculty of Medicine and Health Sciences, Macquarie University, F10A, 2 Technology Place, North Ryde, NSW, 2109, Australia
| | - Vivek K Gupta
- Faculty of Medicine and Health Sciences, Macquarie University, F10A, 2 Technology Place, North Ryde, NSW, 2109, Australia.
| | - Nitin Chitranshi
- Faculty of Medicine and Health Sciences, Macquarie University, F10A, 2 Technology Place, North Ryde, NSW, 2109, Australia.
| | - Veer B Gupta
- School of Medicine, Deakin University, Melbourne, VIC, Australia
| | - Mehdi Mirzaei
- Department of Molecular Science, Macquarie University, North Ryde, NSW, 2109, Australia.,Australian Proteome Analysis Facility, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Yogita Dheer
- Faculty of Medicine and Health Sciences, Macquarie University, F10A, 2 Technology Place, North Ryde, NSW, 2109, Australia
| | - Linda Garthwaite
- Faculty of Medicine and Health Sciences, Macquarie University, F10A, 2 Technology Place, North Ryde, NSW, 2109, Australia
| | - Thiri Zaw
- Department of Molecular Science, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Robert G Parton
- Institute for Molecular Bioscience and Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, Queensland, 4072, Australia.,Institute for Molecular Bioscience, The University of Queensland, QLD, Brisbane, Australia
| | - Yuyi You
- Faculty of Medicine and Health Sciences, Macquarie University, F10A, 2 Technology Place, North Ryde, NSW, 2109, Australia.,Save Sight Institute, Sydney University, Sydney, NSW, 2000, Australia
| | - Stuart L Graham
- Faculty of Medicine and Health Sciences, Macquarie University, F10A, 2 Technology Place, North Ryde, NSW, 2109, Australia.,Save Sight Institute, Sydney University, Sydney, NSW, 2000, Australia
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21
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Bai X, Jia X, Lu Y, Zhu L, Zhao Y, Cheng W, Shu M, Jin S. Salidroside-Mediated Autophagic Targeting of Active Src and Caveolin-1 Suppresses Low-Density Lipoprotein Transcytosis across Endothelial Cells. Oxid Med Cell Longev 2020; 2020:9595036. [PMID: 32685103 DOI: 10.1155/2020/9595036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 05/14/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022]
Abstract
Subendothelial retention of apolipoprotein B100-containing lipoprotein, such as low-density lipoprotein (LDL), is the initial step of atherogenesis. Activation of autophagy exhibits beneficial effects for the treatment of atherosclerosis. In our previous study, we demonstrated that hyperglycemia suppressed autophagic degradation of caveolin-1, which in turn resulted in acceleration of caveolae-mediated LDL transcytosis across endothelial cells and lipid retention. Therefore, targeting the crossed pathway in autophagy activation and LDL transcytosis interruption may be a promising antiatherosclerotic strategy. In metabolic diseases, including atherosclerosis, salidroside, a phenylpropanoid glycoside compound (3,5-dimethoxyphenyl) methyl-β-glucopyranoside), is the most important compound responsible for the therapeutic activities of Rhodiola. However, whether salidroside suppresses LDL transcytosis to alleviate atherosclerosis has not yet been elucidated. In the present study, we demonstrated that salidroside significantly decreased LDL transcytosis across endothelial cells. Salidroside-induced effects were dramatically blocked by AMPK (adenosine monophosphate-activated protein kinase) inhibitor (compound c, AMPKα siRNA) and by overexpression of exogenous tyrosine-phosphorylated caveolin-1 using transfected cells with phosphomimicking caveolin-1 on tyrosine 14 mutant plasmids (Y14D). Furthermore, we observed that salidroside promoted autophagosome formation via activating AMPK. Meanwhile, the interaction between caveolin-1 and LC3B-II, as well as the interaction between active Src (indicated by the phosphorylation of Src on tyrosine 416) and LC3B-II, was significantly increased, upon stimulation with salidroside. In addition, both bafilomycin A1 (a lysosome inhibitor) and an AMPK inhibitor (compound c) markedly prevented salidroside-induced autophagic degradation of p-Src and caveolin-1. Moreover, the phosphorylation of caveolin-1 on tyrosine 14 was disrupted due to the downregulation of p-Src and caveolin-1, thereby directly decreasing LDL transcytosis by attenuating the number of caveolae on the cell membrane and by preventing caveolae-mediated LDL endocytosis released from the cell membrane. In ApoE−/− mice, salidroside significantly delayed the formation of atherosclerotic lesions. Meanwhile, a significant increase in LC3B, accompanied by attenuated accumulation of the autophagy substrate SQSTM1, was observed in aortic endothelium of ApoE−/− mice. Taken together, our findings demonstrated that salidroside protected against atherosclerosis by inhibiting LDL transcytosis through enhancing the autophagic degradation of active Src and caveolin-1.
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22
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Ortiz R, Díaz J, Díaz-Valdivia N, Martínez S, Simón L, Contreras P, Lobos-González L, Guerrero S, Leyton L, Quest AFG. Src-family kinase inhibitors block early steps of caveolin-1-enhanced lung metastasis by melanoma cells. Biochem Pharmacol 2020; 177:113941. [PMID: 32240650 DOI: 10.1016/j.bcp.2020.113941] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/26/2020] [Indexed: 02/08/2023]
Abstract
In advanced stages of cancer disease, caveolin-1 (CAV1) expression increases and correlates with increased migratory and invasive capacity of the respective tumor cells. Previous findings from our laboratory revealed that specific ECM-integrin interactions and tyrosine-14 phosphorylation of CAV1 are required for CAV1-enhanced melanoma cell migration, invasion and metastasis in vivo. In this context, CAV1 phosphorylation on tyrosine-14 mediated by non-receptor Src-family tyrosine kinases seems to be important; however, the effect of Src-family kinase inhibitors on CAV1-enhanced metastasis in vivo has not been studied. Here, we evaluated the effect of CAV1 and c-Abl overexpression, as well as the use of the Src-family kinase inhibitors, PP2 and dasatinib (more specific for Src/Abl) in lung metastasis of B16F10 melanoma cells. Overexpression of CAV1 and c-Abl enhanced CAV1 phosphorylation and the metastatic potential of the B16F10 murine melanoma cells. Alternatively, treatment with PP2 or dasatinib for 2 h reduced CAV1 tyrosine-14 phosphorylation and levels recovered fully within 12 h of removing the inhibitors. Nonetheless, pre-treatment of cells with these inhibitors for 2 h sufficed to prevent migration, invasion and trans-endothelial migration in vitro. Importantly, the transient decrease in CAV1 phosphorylation by these kinase inhibitors prevented early steps of CAV1-enhanced lung metastasis by B16F10 melanoma cells injected into the tail vein of mice. In conclusion, this study underscores the relevance of CAV1 tyrosine-14 phosphorylation by Src-family kinases during the first steps of the metastatic sequence promoted by CAV1. These findings open up potential options for treatment of metastatic tumors in patients in which Src-family kinase activation and CAV1 overexpression favor dissemination of cancer cells to secondary sites.
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23
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Abstract
Transcytosis of macromolecules through lung endothelial cells is the primary route of transport from the vascular compartment into the interstitial space. Endothelial transcytosis is mostly a caveolae-dependent process that combines receptor-mediated endocytosis, vesicle trafficking via actin-cytoskeletal remodeling, and SNARE protein directed vesicle fusion and exocytosis. Herein, we review the current literature on caveolae-mediated endocytosis, the role of actin cytoskeleton in caveolae stabilization at the plasma membrane, actin remodeling during vesicle trafficking, and exocytosis of caveolar vesicles. Next, we provide a concise summary of experimental methods employed to assess transcytosis. Finally, we review evidence that transcytosis contributes to the pathogenesis of acute lung injury. © 2020 American Physiological Society. Compr Physiol 10:491-508, 2020.
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Affiliation(s)
- Joshua H. Jones
- Department of Pharmacology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Richard D. Minshall
- Department of Pharmacology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA,Department of Anesthesiology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA,Correspondence to
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24
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Díaz-Valdivia NI, Díaz J, Contreras P, Campos A, Rojas-Celis V, Burgos-Ravanal RA, Lobos-González L, Torres VA, Perez VI, Frei B, Leyton L, Quest AFG. The non-receptor tyrosine phosphatase type 14 blocks caveolin-1-enhanced cancer cell metastasis. Oncogene 2020; 39:3693-3709. [PMID: 32152405 PMCID: PMC7190567 DOI: 10.1038/s41388-020-1242-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 01/20/2020] [Accepted: 02/21/2020] [Indexed: 01/13/2023]
Abstract
Caveolin-1 (CAV1) enhanced migration, invasion, and metastasis of cancer cells is inhibited by co-expression of the glycoprotein E-cadherin. Although the two proteins form a multiprotein complex that includes β-catenin, it remained unclear how this would contribute to blocking the metastasis promoting function of CAV1. Here, we characterized by mass spectrometry the protein composition of CAV1 immunoprecipitates from B16F10 murine melanoma cells expressing or not E-cadherin. The novel protein tyrosine phosphatase PTPN14 was identified by mass spectrometry analysis exclusively in co-immunoprecipitates of CAV1 with E-cadherin. Interestingly, PTPN14 is implicated in controlling metastasis, but only few known PTPN14 substrates exist. We corroborated by western blotting experiments that PTPN14 and CAV1 co-inmunoprecipitated in the presence of E-cadherin in B16F10 melanoma and other cancer cells. Moreover, the CAV1(Y14F) mutant protein was shown to co-immunoprecipitate with PTPN14 even in the absence of E-cadherin, and overexpression of PTPN14 reduced CAV1 phosphorylation on tyrosine-14, as well as suppressed CAV1-enhanced cell migration, invasion and Rac-1 activation in B16F10, metastatic colon [HT29(US)] and breast cancer (MDA-MB-231) cell lines. Finally, PTPN14 overexpression in B16F10 cells reduced the ability of CAV1 to induce metastasis in vivo. In summary, we identify here CAV1 as a novel substrate for PTPN14 and show that overexpression of this phosphatase suffices to reduce CAV1-induced metastasis.
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Affiliation(s)
- Natalia I Díaz-Valdivia
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Jorge Díaz
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Institute for Research in Dental Science, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Pamela Contreras
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - América Campos
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Fundación Ciencia & Vida, Santiago, Chile
| | - Victoria Rojas-Celis
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Renato A Burgos-Ravanal
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Lorena Lobos-González
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Fundación Ciencia & Vida, Santiago, Chile
| | - Vicente A Torres
- Institute for Research in Dental Science, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Viviana I Perez
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, Corvallis, OR, USA
| | - Balz Frei
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, Corvallis, OR, USA
| | - Lisette Leyton
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile.
| | - Andrew F G Quest
- Cellular Communication Laboratory, Center for studies on Exercise, Metabolism and Cancer (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile.
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25
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Mohamed FEA, Khalil EZI, Toni NDM. Caveolin-1 Expression Together with VEGF can be a Predictor for Lung Metastasis and Poor Prognosis in Osteosarcoma. Pathol Oncol Res 2020; 26:1787-95. [PMID: 31676993 DOI: 10.1007/s12253-019-00755-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 09/22/2019] [Indexed: 12/25/2022]
Abstract
Caveolin-1, the major protein component of caveolae, plays vital functions in tumorigenesis and metastasis. Previous evidence demonstrated the positive role of Caveolin-1 in the regulation of endothelial cell differentiation and the involvement of Caveolin-1 in vascular endothelial growth factor (VEGF) mediated angiogenesis. The correlation of Caveolin-1 expression and angiogenesis is not yet elucidated in osteosarcoma. This study aimed to investigate the expression levels of Caveolin-1 and VEGF in osteosarcoma and their associations with clinicopathological data. This study included 66 formalin-fixed and paraffin embedded osteosarcoma tissue samples. The expression levels of Caveolin-1 and VEGF were assessed by immunohistochemistry. Then associations with clinicopathological variables and the correlation between both markers were evaluated statistically. We also investigated the expression of Caveolin-1 and VEGF values in gene microarrays of osteosarcoma patients and cell lines by using GEO data sets on https://www.ncbi.nlm.nih.gov. Caveolin-1 and VEGF were expressed in 19.6% and 77.3%, respectively. Caveolin-1 expression was associated positively with osteoblastic histological subtype (P < 0.0001). VEGF expression showed positive association with patient age, histological grade and clinical stage (P = 0.031, P = 0.024 and P < 0.001; respectively). An inverse correlation between Caveolin-1 and VEGF expressions in osteosarcoma was found (r = 0.2 P = 0.04). In silico analysis of Caveolin-1 and VEGF expression supported our results. Our results suggest that Caveolin-1 may act as a tumor suppressor in osteosarcoma. Down-regulation of Caveolin-1 can be used as an indicator for poor prognosis in osteosarcoma patients. Meanwhile, overexpression of VEGF is a predictor of pulmonary metastasis and poor prognosis.
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Hau AM, Gupta S, Leivo MZ, Nakashima K, Macias J, Zhou W, Hodge A, Wulfkuhle J, Conkright B, Bhuvaneshwar K, Rao S, Madhavan S, Petricoin EF 3rd, Hansel DE. Dynamic Regulation of Caveolin-1 Phosphorylation and Caveolae Formation by Mammalian Target of Rapamycin Complex 2 in Bladder Cancer Cells. Am J Pathol 2019; 189:1846-62. [PMID: 31199921 DOI: 10.1016/j.ajpath.2019.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 05/01/2019] [Accepted: 05/07/2019] [Indexed: 12/31/2022]
Abstract
The mammalian target of rapamycin (mTOR) and associated phosphatidylinositol 3-kinase/AKT/mTOR signaling pathway is commonly up-regulated in cancer, including bladder cancer. mTOR complex 2 (mTORC2) is a major regulator of bladder cancer cell migration and invasion, but the mechanisms by which mTORC2 regulates these processes are unclear. A discovery mass spectrometry and reverse-phase protein array-based proteomics dual approach was used to identify novel mTORC2 phosphoprotein targets in actively invading cancer cells. mTORC2 targets included focal adhesion kinase, proto-oncogene tyrosine-protein kinase Src, and caveolin-1 (Cav-1), among others. Functional testing shows that mTORC2 regulates Cav-1 localization and dynamic phosphorylation of Cav-1 on Y14. Regulation of Cav-1 activity by mTORC2 also alters the abundance of caveolae, which are specialized lipid raft invaginations of the plasma membrane associated with cell signaling and membrane compartmentalization. Our results demonstrate a unique role for mTORC2-mediated regulation of caveolae formation in actively migrating cancer cells.
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27
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Chu PY, Tai YL, Shen TL. Grb7, a Critical Mediator of EGFR/ErbB Signaling, in Cancer Development and as a Potential Therapeutic Target. Cells 2019; 8:cells8050435. [PMID: 31083325 PMCID: PMC6562560 DOI: 10.3390/cells8050435] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/02/2019] [Accepted: 05/09/2019] [Indexed: 12/20/2022] Open
Abstract
The partner of activated epidermal growth factor receptor (EGFR), growth factor receptor bound protein-7 (Grb7), a functionally multidomain adaptor protein, has been demonstrated to be a pivotal regulator for varied physiological and pathological processes by interacting with phospho-tyrosine-related signaling molecules to affect the transmission through a number of signaling pathways. In particular, critical roles of Grb7 in erythroblastic leukemia viral oncogene homolog (ERBB) family-mediated cancer development and malignancy have been intensively evaluated. The overexpression of Grb7 or the coamplification/cooverexpression of Grb7 and members of the ERBB family play essential roles in advanced human cancers and are associated with decreased survival and recurrence of cancers, emphasizing Grb7's value as a prognostic marker and a therapeutic target. Peptide inhibitors of Grb7 are being tested in preclinical trials for their possible therapeutic effects. Here, we review the molecular, functional, and clinical aspects of Grb7 in ERBB family-mediated cancer development and malignancy with the aim to reveal alternative and effective therapeutic strategies.
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Affiliation(s)
- Pei-Yu Chu
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 10617, Taiwan.
| | - Yu-Ling Tai
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 10617, Taiwan.
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| | - Tang-Long Shen
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 10617, Taiwan.
- Center for Biotechnology, National Taiwan University, Taipei 10617, Taiwan.
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28
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Yoon HJ, Kim DH, Kim SJ, Jang JH, Surh YJ. Src-mediated phosphorylation, ubiquitination and degradation of Caveolin-1 promotes breast cancer cell stemness. Cancer Lett 2019; 449:8-19. [DOI: 10.1016/j.canlet.2019.01.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/02/2019] [Accepted: 01/14/2019] [Indexed: 12/19/2022]
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29
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Wan LY, Yuan WF, Ai WB, Ai YW, Wang JJ, Chu LY, Zhang YQ, Wu JF. An exploration of aptamer internalization mechanisms and their applications in drug delivery. Expert Opin Drug Deliv 2019; 16:207-218. [PMID: 30691313 DOI: 10.1080/17425247.2019.1575808] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/25/2019] [Indexed: 12/21/2022]
Abstract
INTRODUCTION As 'chemical antibodies', aptamers have some advantages, such as lack of immunogenicity, rapid tissue penetration, cell internalization and so on. Consequently, more and more aptamers have been screened out by the systematic evolution of ligands through exponential enrichment for the desired cells or membrane receptors. On the basis of the result, researchers use aptamers to guide drug targeting to the desired cells and internalization in vivo. AREAS COVERED In this review, we explore the mechanisms of cargo- or aptamer-mediated internalization, and then briefly summarize five strategies for exploring the mechanism of aptamer internalization. Finally, we focus on four types of applications involving aptamer internalization: aptamers as drugs, aptamers as chemical drug-delivery systems, aptamer-based chimeras and aptamer-conjugated nanoparticles or block copolymer micelles. EXPERT OPINION Two aptamer-internalization mechanisms are known, namely receptor-mediated endocytosis and macropinocytosis. The latter mechanism, which is has only been verified in the internalization of nucleolin aptamer shuttles between the nucleus and cytoplasm, may be important for nuclear internalization and cargo molecule escape from the endosomal compartment. Thus, it is feasible to use some strategies to further explore the macropinocytosis internalization mechanism and then to screen for aptamers similar to the nucleolin aptamer for use with the desired cell types as a targeted delivery tool.
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Affiliation(s)
- Lin-Yan Wan
- a The People's Hospital , China Three Gorges University , Yichang , China
- b Institute of Organ Fibrosis and Targeted Drug Delivery , China Three Gorges University , Yichang , China
| | - Wen-Fang Yuan
- b Institute of Organ Fibrosis and Targeted Drug Delivery , China Three Gorges University , Yichang , China
- c Medical College , China Three Gorges University , Yichang , China
| | - Wen-Bing Ai
- d The Yiling Hospital of Yichang , Yichang , Hubei , China
| | - Yao-Wei Ai
- a The People's Hospital , China Three Gorges University , Yichang , China
- b Institute of Organ Fibrosis and Targeted Drug Delivery , China Three Gorges University , Yichang , China
| | - Jiao-Jiao Wang
- c Medical College , China Three Gorges University , Yichang , China
| | - Liang-Yin Chu
- e School of Chemical Engineering , Sichuan University , Chengdu , China
| | - Yan-Qiong Zhang
- b Institute of Organ Fibrosis and Targeted Drug Delivery , China Three Gorges University , Yichang , China
- c Medical College , China Three Gorges University , Yichang , China
| | - Jiang-Feng Wu
- a The People's Hospital , China Three Gorges University , Yichang , China
- b Institute of Organ Fibrosis and Targeted Drug Delivery , China Three Gorges University , Yichang , China
- c Medical College , China Three Gorges University , Yichang , China
- d The Yiling Hospital of Yichang , Yichang , Hubei , China
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30
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Muriel O, Sánchez-Álvarez M, Strippoli R, Del Pozo MA. Role of the Endocytosis of Caveolae in Intracellular Signaling and Metabolism. Prog Mol Subcell Biol 2018; 57:203-34. [PMID: 30097777 DOI: 10.1007/978-3-319-96704-2_8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Caveolae are 60-80 nm invaginated plasma membrane (PM) nanodomains, with a specific lipid and protein composition, which assist and regulate multiple processes in the plasma membrane-ranging from the organization of signalling complexes to the mechanical adaptation to changes in PM tension. However, since their initial descriptions, these structures have additionally been found tightly linked to internalization processes, mechanoadaptation, to the regulation of signalling events and of endosomal trafficking. Here, we review caveolae biology from this perspective, and its implications for cell physiology and disease.
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Wang X, Liu Z, Yang Z. Expression and clinical significance of Caveolin-1 in prostate Cancer after transurethral surgery. BMC Urol 2018; 18:102. [PMID: 30424755 PMCID: PMC6234622 DOI: 10.1186/s12894-018-0418-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 10/30/2018] [Indexed: 12/19/2022] Open
Abstract
Background Prostate cancer is a common malignancy of the male genitourinary system that occurs worldwide. The current research aims to investigate caveolin-1 expression in prostate cancer tissue and its relationship with pathological grade, clinical pathologic staging, and preoperative prostate-specific antigen (PSA) levels. Methods From January 2012 to December 2014, samples from 47 patients with prostate cancer who had received transurethral prostatic resection (TURP) and 20 patients with benign prostatic hyperplasia were collected at the First Affiliated Hospital of Guangxi Medical University. Caveolin-1 was detected by streptavidin-perosidase (SP) immunohistochemical staining in pathological tissue slices. The results were statistically analyzed for pathological grade, clinical stage, and preoperative PSA level. Results The expression of caveolin-1 was significantly higher in prostate cancer samples than in benign prostatic hyperplasia samples (P < 0.05), and caveolin-1 expression was significantly different among the pathological grades of poorly, moderately and well-differentiated prostate cancer (P < 0.05). The difference in caveolin-1 expression was significant for different clinical stages (T1-T2 and T3-T4) of prostate cancer (P < 0.05). The difference in caveolin-1 expression was not significant among samples with different preoperative PSA levels (0–10, 10–100 and > 100 μg/L) (P > 0.05). Conclusions Caveolin-1 is closely related to the pathological grade and clinical stage of prostate cancer after transurethral surgery, and it may be a novel tumor marker for prostate cancer. The expression of caveolin-1 is not associated with preoperative serum PSA levels.
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Affiliation(s)
- Xiaoming Wang
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China. .,Department of Urology, The Second Affiliated Hospital of Guangxi Medical University, No 166 DaXueDong Road, Nanning, 530007, Guangxi, China.
| | - Zhigui Liu
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China
| | - Zhanbin Yang
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China
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Jung W, Sierecki E, Bastiani M, O'Carroll A, Alexandrov K, Rae J, Johnston W, Hunter DJB, Ferguson C, Gambin Y, Ariotti N, Parton RG. Cell-free formation and interactome analysis of caveolae. J Cell Biol 2018; 217:2141-2165. [PMID: 29716956 PMCID: PMC5987714 DOI: 10.1083/jcb.201707004] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 01/24/2018] [Accepted: 03/29/2018] [Indexed: 02/07/2023] Open
Abstract
Caveolae are linked to signaling protein regulation through interactions with caveolins. We describe a cell-free system for the biogenesis of caveolae and show phosphorylated-caveolins preferentially bind signaling proteins. Our validation in vivo shows that phosphorylated CAV1 recruits TRAF2 to the endosome to form a signaling platform. Caveolae have been linked to the regulation of signaling pathways in eukaryotic cells through direct interactions with caveolins. Here, we describe a cell-free system based on Leishmania tarentolae (Lt) extracts for the biogenesis of caveolae and show its use for single-molecule interaction studies. Insertion of expressed caveolin-1 (CAV1) into Lt membranes was analogous to that of caveolin in native membranes. Electron tomography showed that caveolins generate domains of precise size and curvature. Cell-free caveolae were used in quantitative assays to test the interaction of membrane-inserted caveolin with signaling proteins and to determine the stoichiometry of interactions. Binding of membrane-inserted CAV1 to several proposed binding partners, including endothelial nitric-oxide synthase, was negligible, but a small number of proteins, including TRAF2, interacted with CAV1 in a phosphorylation-(CAV1Y14)–stimulated manner. In cells subjected to oxidative stress, phosphorylated CAV1 recruited TRAF2 to the early endosome forming a novel signaling platform. These findings lead to a novel model for cellular stress signaling by CAV1.
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Affiliation(s)
- WooRam Jung
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Emma Sierecki
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Michele Bastiani
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Ailis O'Carroll
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Kirill Alexandrov
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - James Rae
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Wayne Johnston
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Dominic J B Hunter
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Charles Ferguson
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Yann Gambin
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Nicholas Ariotti
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia
| | - Robert G Parton
- The University of Queensland, The Institute for Molecular Bioscience, Brisbane, Queensland, Australia .,The University of Queensland, The Centre for Microscopy and Microanalysis, Brisbane, Queensland, Australia
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Park SY, Park JW, Lee GW, Li L, Chun YS. Inhibition of neddylation facilitates cell migration through enhanced phosphorylation of caveolin-1 in PC3 and U373MG cells. BMC Cancer 2018; 18:30. [PMID: 29301501 DOI: 10.1186/s12885-017-3942-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 12/19/2017] [Indexed: 11/26/2022] Open
Abstract
Background Protein neddylation is a post-translational modification by a covalent conjugation with the neural precursor cell expressed, developmentally downregulated 8 (NEDD8). Although this process has been reported to participate in diverse cellular signaling, little is known about its role in cancer cell migration. Given a recent proteomics report showing that NEDD8 is downregulated in prostate cancer tissues versus normal prostate tissues, we tested the possibility that neddylation plays a role in cancer evolution, and then tried to identify target proteins of the neddylation. Methods The neddylation process was inhibited by transfecting cancer cells with NEDD8-targeting siRNAs or by treating the cells with a NAE1 inhibitor MLN4924. Cell migration was evaluated by an in vitro wound-healing assay and a Transwell migration assay. His/NEDD8-conjugated proteins were pulled down with nickel-affinity beads under a denaturing condition, and identified by Western blotting. All data were processed using the Microsoft Excel program and analyzed statistically by two-sided, unpaired Student’s t-test. Results Caveolin-1, which plays a critical role in cell migration, was identified to be conjugated with NEDD8. When the neddylation was inhibited, the phosphorylation of caveolin-1 at Tyr14 was augmented in PC3 and U373MG cells, thereby leading to increased cell migration. Such consequences by neddylation inhibition were abolished in the presence of a Src family kinase inhibitor PP2. Conclusions NEDD8 seems to inhibit the Src-mediated phosphorylation of caveolin-1 by modifying the structure of caveolin-1 protein, which blocks the migration of cancer cells. Although the neddylation process is currently regarded as an emerging target for cancer therapy, our results suggest the possibility that the inhibition of neddylation could facilitate cancer invasion or metastasis at least in some types of cancers. Electronic supplementary material The online version of this article (doi: 10.1186/s12885-017-3942-9) contains supplementary material, which is available to authorized users.
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Díaz-Valdivia NI, Calderón CC, Díaz JE, Lobos-González L, Sepulveda H, Ortíz RJ, Martinez S, Silva V, Maldonado HJ, Silva P, Wehinger S, Burzio VA, Torres VA, Montecino M, Leyton L, Quest AFG. Anti-neoplastic drugs increase caveolin-1-dependent migration, invasion and metastasis of cancer cells. Oncotarget 2017; 8:111943-111965. [PMID: 29340103 PMCID: PMC5762371 DOI: 10.18632/oncotarget.22955] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 11/16/2017] [Indexed: 12/20/2022] Open
Abstract
Expression of the scaffolding protein Caveolin-1 (CAV1) enhances migration and invasion of metastatic cancer cells. Yet, CAV1 also functions as a tumor suppressor in early stages of cancer, where expression is suppressed by epigenetic mechanisms. Thus, we sought to identify stimuli/mechanisms that revert epigenetic CAV1 silencing in cancer cells and evaluate how this affects their metastatic potential. We reasoned that restricted tissue availability of anti-neoplastic drugs during chemotherapy might expose cancer cells to sub-therapeutic concentrations, which activate signaling pathways and the expression of CAV1 to favor the acquisition of more aggressive traits. Here, we used in vitro [2D, invasion] and in vivo (metastasis) assays, as well as genetic and biochemical approaches to address this question. Colon and breast cancer cells were identified where CAV1 levels were low due to epigenetic suppression and could be reverted by treatment with the methyltransferase inhibitor 5’-azacytidine. Exposure of these cells to anti-neoplastic drugs for short periods of time (24-48 h) increased CAV1 expression through ROS production and MEK/ERK activation. In colon cancer cells, increased CAV1 expression enhanced migration and invasion in vitro via pathways requiring Src-family kinases, as well as Rac-1 activity. Finally, elevated CAV1 expression in colon cancer cells following exposure in vitro to sub-cytotoxic drug concentrations increased their metastatic potential in vivo. Therefore exposure of cancer cells to anti-neoplastic drugs at non-lethal drug concentrations induces signaling events and changes in transcription that favor CAV1-dependent migration, invasion and metastasis. Importantly, this may occur in the absence of selection for drug-resistance.
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Affiliation(s)
- Natalia I Díaz-Valdivia
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Claudia C Calderón
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Jorge E Díaz
- Cellular Communication Laboratory, 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
| | - Lorena Lobos-González
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Fundación Ciencia & Vida, Santiago, Chile
| | - Hugo Sepulveda
- Gene Regulation Laboratory, Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andrés Bello, Santiago, Chile
| | - Rina J Ortíz
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Universidad Bernardo O Higgins, Facultad de Salud, Departamento de Ciencias Químicas y Biológicas, Santiago, Chile
| | - Samuel Martinez
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | | | - Horacio J Maldonado
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Patricio Silva
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Sergio Wehinger
- Faculty of Health Sciences, University of Talca, Interdisciplinary Excellence Research Program Healthy Ageing (PIEI-ES), Talca, Chile
| | - Verónica A Burzio
- Fundación Ciencia & Vida, Santiago, Chile.,Faculty of Biological Sciences, Universidad Andrés Bello, Santiago, Chile
| | - Vicente A Torres
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Martín Montecino
- Gene Regulation Laboratory, Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, Universidad Andrés Bello, Santiago, Chile
| | - Lisette Leyton
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Andrew F G Quest
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Faculty of Medicine, Universidad de Chile, Santiago, Chile
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Muramatsu M, Gao L, Peresie J, Balderman B, Akakura S, Gelman IH. SSeCKS/AKAP12 scaffolding functions suppress B16F10-induced peritoneal metastasis by attenuating CXCL9/10 secretion by resident fibroblasts. Oncotarget 2017; 8:70281-70298. [PMID: 29050279 PMCID: PMC5642554 DOI: 10.18632/oncotarget.20092] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 07/26/2017] [Indexed: 12/11/2022] Open
Abstract
SSeCKS/Gravin/AKAP12 (SSeCKS) is a kinase scaffolding protein known to suppress metastasis by attenuating tumor-intrinsic PKC- and Src-mediated signaling pathways [1]. In addition to downregulation in metastatic cells, in silico analyses identified SSeCKS downregulation in prostate or breast cancer-derived stroma, suggesting a microenvironmental cell role in controlling malignancy. Although orthotopic B16F10 and SM1WT1[BrafV600E] mouse melanoma tumors grew similarly in syngeneic WT or SSeCKS-null (KO) mice, KO hosts exhibited 5- to 10-fold higher levels of peritoneal metastasis, and this enhancement could be adoptively transferred by pre-injecting naïve WT mice with peritoneal fluid (PF), but not non-adherent peritoneal cells (PC), from naïve KO mice. B16F10 and SM1WT1 cells showed increased chemotaxis to KO-PF compared to WT-PF, corresponding to increased PF levels of multiple inflammatory mediators, including the Cxcr3 ligands, Cxcl9 and 10. Cxcr3 knockdown abrogated enhanced chemotaxis to KO-PF and peritoneal metastasis in KO hosts. Conditioned media from KO peritoneal membrane fibroblasts (PMF), but not from KO-PC, induced increased B16F10 chemotaxis over controls, which could be blocked with Cxcl10 neutralizing antibody. KO-PMF exhibited increased levels of the senescence markers, SA-β-galactosidase, p21waf1 and p16ink4a, and enhanced Cxcl10 secretion induced by inflammatory mediators, lipopolysaccharide, TNFα, IFNα and IFNγ. SSeCKS scaffolding-site mutants and small molecule kinase inhibitors were used to show that the loss of SSeCKS-regulated PKC, PKA and PI3K/Akt pathways are responsible for the enhanced Cxcl10 secretion. These data mark the first description of a role for stromal SSeCKS/AKAP12 in suppressing metastasis, specifically by attenuating signaling pathways that promote secretion of tumor chemoattractants in the peritoneum.
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Affiliation(s)
- Masashi Muramatsu
- Institute of Resource Development and Analysis, Kumamoto University, Kumamoto 860-0811, Japan
| | - Lingqiu Gao
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo 14263, NY, USA
| | - Jennifer Peresie
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo 14263, NY, USA
| | - Benjamin Balderman
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo 14263, NY, USA
| | - Shin Akakura
- Frontiers in Bioscience Research Institute in Aging and Cancer, Irvine 92618, CA, USA
| | - Irwin H Gelman
- Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo 14263, NY, USA
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Meng F, Saxena S, Liu Y, Joshi B, Wong TH, Shankar J, Foster LJ, Bernatchez P, Nabi IR. The phospho-caveolin-1 scaffolding domain dampens force fluctuations in focal adhesions and promotes cancer cell migration. Mol Biol Cell 2017; 28:2190-2201. [PMID: 28592633 PMCID: PMC5531735 DOI: 10.1091/mbc.e17-05-0278] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 06/02/2017] [Indexed: 12/15/2022] Open
Abstract
Caveolin-1 (Cav1), a major Src kinase substrate phosphorylated on tyrosine-14 (Y14), contains the highly conserved membrane-proximal caveolin scaffolding domain (CSD; amino acids 82-101). Here we show, using CSD mutants (F92A/V94A) and membrane-permeable CSD-competing peptides, that Src kinase-dependent pY14Cav1 regulation of focal adhesion protein stabilization, focal adhesion tension, and cancer cell migration is CSD dependent. Quantitative proteomic analysis of Cav1-GST (amino acids 1-101) pull downs showed sixfold-increased binding of vinculin and, to a lesser extent, α-actinin, talin, and filamin, to phosphomimetic Cav1Y14D relative to nonphosphorylatable Cav1Y14F. Consistently, pY14Cav1 enhanced CSD-dependent vinculin tension in focal adhesions, dampening force fluctuation and synchronously stabilizing cellular focal adhesions in a high-tension mode, paralleling effects of actin stabilization. This identifies pY14Cav1 as a molecular regulator of focal adhesion tension and suggests that functional interaction between Cav1 Y14 phosphorylation and the CSD promotes focal adhesion traction and, thereby, cancer cell motility.
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Affiliation(s)
- Fanrui Meng
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Sandeep Saxena
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Youtao Liu
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Bharat Joshi
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Timothy H Wong
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Jay Shankar
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Leonard J Foster
- Department of Biochemistry and Molecular Biology and Michael Smith Labs, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Pascal Bernatchez
- James Hogg Research Centre, Institute for Heart + Lung Health, St Paul's Hospital, Vancouver, BC V6Z 1Y6, Canada.,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Ivan R Nabi
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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Nah J, Yoo SM, Jung S, Jeong EI, Park M, Kaang BK, Jung YK. Phosphorylated CAV1 activates autophagy through an interaction with BECN1 under oxidative stress. Cell Death Dis 2017; 8:e2822. [PMID: 28542134 PMCID: PMC5520747 DOI: 10.1038/cddis.2017.71] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 01/26/2017] [Accepted: 01/30/2017] [Indexed: 12/19/2022]
Abstract
CAV1/Caveolin1, an integral membrane protein, is involved in caveolae function and cellular signaling pathways. Here, we report that CAV1 is a positive regulator of autophagy under oxidative stress and cerebral ischemic injury. Treatment with hydrogen peroxide enhanced autophagy flux and caused the localization of BECN1 to the mitochondria, whereas these changes were impaired in the absence of CAV1. Among many autophagy signals, only LC3 foci formation in response to hydrogen peroxide was abolished by CAV1 deficiency. Under oxidative stress, CAV1 interacted with a complex of BECN1/VPS34 through its scaffolding domain, and this interaction facilitated autophagosome formation. Interestingly, the phosphorylation of CAV1 at tyrosine-14 was essential for the interaction with BECN1 and their localization to the mitochondria, and the activation of autophagy in response to hydrogen peroxide. In addition, the expression of a phosphatase PTPN1 reduced the phosphorylation of CAV1 and inhibited autophagy. Further, compared to that in wild-type mice, autophagy was impaired and cerebral infarct damage was aggravated in the brain of Cav1 knockout mice. These results suggest that the phosphorylated CAV1 functions to activate autophagy through binding to the BECN1/VPS34 complex under oxidative stress and to protect against ischemic damage.
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Affiliation(s)
- Jihoon Nah
- Department of Biological Sciences, Seoul National University, 1 Gwanak-ro, Seoul, Gwanak-gu 151-747, Korea
| | - Seung-Min Yoo
- Department of Biological Sciences, Seoul National University, 1 Gwanak-ro, Seoul, Gwanak-gu 151-747, Korea
| | - Sunmin Jung
- Department of Biological Sciences, Seoul National University, 1 Gwanak-ro, Seoul, Gwanak-gu 151-747, Korea
| | - Eun Il Jeong
- Department of Biological Sciences, Seoul National University, 1 Gwanak-ro, Seoul, Gwanak-gu 151-747, Korea
| | - Moonju Park
- Department of Biological Sciences, Seoul National University, 1 Gwanak-ro, Seoul, Gwanak-gu 151-747, Korea
| | - Bong-Kiun Kaang
- Department of Biological Sciences, Seoul National University, 1 Gwanak-ro, Seoul, Gwanak-gu 151-747, Korea
| | - Yong-Keun Jung
- Department of Biological Sciences, Seoul National University, 1 Gwanak-ro, Seoul, Gwanak-gu 151-747, Korea
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Abstract
PURPOSE OF REVIEW Diabetic nephropathy, a major microvascular complication of diabetes and the most common cause of end-stage renal disease, is characterized by prominent accumulation of extracellular matrix. The membrane microdomains caveolae, and their integral protein caveolin-1, play critical roles in the regulation of signal transduction. In this review we discuss current knowledge of the contribution of caveolin-1/caveolae to profibrotic signaling and the pathogenesis of diabetic kidney disease, and assess its potential as a therapeutic target. RECENT FINDINGS Caveolin (cav)-1 is key to facilitating profibrotic signal transduction induced by several stimuli known to be pathogenic in diabetic nephropathy, including the most prominent factors hyperglycemia and angiotensin II. Phosphorylation of cav-1 on Y14 is an important regulator of these responses. In vivo studies support a pathogenic role for caveolae in the progression of diabetic nephropathy. Targeting caveolin-1/caveolae would enable inhibition of multiple profibrotic pathways, representing a novel and potentially potent therapeutic option for diabetic nephropathy.
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Affiliation(s)
- Richard Van Krieken
- Department of Medicine, Division of Nephrology, St. Joseph's Hospital, McMaster University, 50 Charlton Ave E, T3311, Hamilton, ON, L8N 4A6, Canada
| | - Joan C Krepinsky
- Department of Medicine, Division of Nephrology, St. Joseph's Hospital, McMaster University, 50 Charlton Ave E, T3311, Hamilton, ON, L8N 4A6, Canada.
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Busija AR, Patel HH, Insel PA. Caveolins and cavins in the trafficking, maturation, and degradation of caveolae: implications for cell physiology. Am J Physiol Cell Physiol 2017; 312:C459-C477. [PMID: 28122734 DOI: 10.1152/ajpcell.00355.2016] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/23/2017] [Accepted: 01/24/2017] [Indexed: 01/09/2023]
Abstract
Caveolins (Cavs) are ~20 kDa scaffolding proteins that assemble as oligomeric complexes in lipid raft domains to form caveolae, flask-shaped plasma membrane (PM) invaginations. Caveolae ("little caves") require lipid-lipid, protein-lipid, and protein-protein interactions that can modulate the localization, conformational stability, ligand affinity, effector specificity, and other functions of proteins that are partners of Cavs. Cavs are assembled into small oligomers in the endoplasmic reticulum (ER), transported to the Golgi for assembly with cholesterol and other oligomers, and then exported to the PM as an intact coat complex. At the PM, cavins, ~50 kDa adapter proteins, oligomerize into an outer coat complex that remodels the membrane into caveolae. The structure of caveolae protects their contents (i.e., lipids and proteins) from degradation. Cellular changes, including signal transduction effects, can destabilize caveolae and produce cavin dissociation, restructuring of Cav oligomers, ubiquitination, internalization, and degradation. In this review, we provide a perspective of the life cycle (biogenesis, degradation), composition, and physiologic roles of Cavs and caveolae and identify unanswered questions regarding the roles of Cavs and cavins in caveolae and in regulating cell physiology.1.
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Affiliation(s)
- Anna R Busija
- Department of Anesthesiology, University of California, San Diego, La Jolla, California.,Department of Pharmacology, University of California, San Diego, La Jolla, California
| | - Hemal H Patel
- Department of Anesthesiology, University of California, San Diego, La Jolla, California
| | - Paul A Insel
- Department of Medicine, University of California, San Diego, La Jolla, California; and .,Department of Pharmacology, University of California, San Diego, La Jolla, California
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Yin H, Liu T, Zhang Y, Yang B. Caveolin proteins: a molecular insight into disease. Front Med 2016; 10:397-404. [DOI: 10.1007/s11684-016-0483-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 08/17/2016] [Indexed: 12/31/2022]
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Gu X, Reagan AM, McClellan ME, Elliott MH. Caveolins and caveolae in ocular physiology and pathophysiology. Prog Retin Eye Res 2016; 56:84-106. [PMID: 27664379 DOI: 10.1016/j.preteyeres.2016.09.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 09/15/2016] [Accepted: 09/20/2016] [Indexed: 12/14/2022]
Abstract
Caveolae are specialized, invaginated plasma membrane domains that are defined morphologically and by the expression of signature proteins called, caveolins. Caveolae and caveolins are abundant in a variety of cell types including vascular endothelium, glia, and fibroblasts where they play critical roles in transcellular transport, endocytosis, mechanotransduction, cell proliferation, membrane lipid homeostasis, and signal transduction. Given these critical cellular functions, it is surprising that ablation of the caveolae organelle does not result in lethality suggesting instead that caveolae and caveolins play modulatory roles in cellular homeostasis. Caveolar components are also expressed in ocular cell types including retinal vascular cells, Müller glia, retinal pigment epithelium (RPE), conventional aqueous humor outflow cells, the corneal epithelium and endothelium, and the lens epithelium. In the eye, studies of caveolae and other membrane microdomains (i.e., "lipid rafts") have lagged behind what is a substantial body of literature outside vision science. However, interest in caveolae and their molecular components has increased with accumulating evidence of important roles in vision-related functions such as blood-retinal barrier homeostasis, ocular inflammatory signaling, pathogen entry at the ocular surface, and aqueous humor drainage. The recent association of CAV1/2 gene loci with primary open angle glaucoma and intraocular pressure has further enhanced the need to better understand caveolar functions in the context of ocular physiology and disease. Herein, we provide the first comprehensive review of literature on caveolae, caveolins, and other membrane domains in the context of visual system function. This review highlights the importance of caveolae domains and their components in ocular physiology and pathophysiology and emphasizes the need to better understand these important modulators of cellular function.
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Affiliation(s)
- Xiaowu Gu
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Alaina M Reagan
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Mark E McClellan
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Michael H Elliott
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
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Mahmood J, Zaveri SR, Murti SC, Alexander AA, Connors CQ, Shukla HD, Vujaskovic Z. Caveolin-1: a novel prognostic biomarker of radioresistance in cancer. Int J Radiat Biol 2016; 92:747-753. [PMID: 27623870 DOI: 10.1080/09553002.2016.1222096] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
PURPOSE Caveolin-1 is a membrane protein highly expressed in many tumors and plays an important role in tumor progression and metastasis. This review describes the structure of the Caveolin-1 protein and its pre-clinical and clinical significance, demonstrating that Caveolin-1 is a novel biomarker for radioresistance which has the promising potential to improve the clinical outcome of cancer patients undergoing radiation treatment. SUMMARY Targeted radiation therapy has shown immense benefits for cancer treatment. However, one of the major challenges for effective clinical outcome of radiation therapy for cancer patients is the development of radioresistance during radiation treatment. As a consequence, radiation therapy becomes a less effective modality for successful clinical outcome. Furthermore, a radioresistant tumor has the ability to repair its genome, and therefore becomes more aggressive and metastasizes. The plausible mechanisms for tumor radioresistance include the rapid DNA repair, somatic mutations in tumor oncogenes, aberrant activation of kinase pathways, and changes in the tumor microenvironment including tumor hypoxia, tumor vasculature, and cancer stem cells. Caveolin-1 is significantly upregulated in certain cancer cells and aberrantly mediates downstream signaling mechanisms. Notably, numerous recent research reports have shown the role of Caveolin-1 in tumor radioresistance and poor treatment outcome. Thus, Caveolin-1 could be a novel prognostic biomarker to monitor tumor radioresistance in cancer patients undergoing radiation therapy. CONCLUSIONS Caveolin-1 has the promising potential to become a novel prognostic biomarker to monitor tumor radioresistance and radiation response specifically in the prostate, pancreas, and lung cancer.
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Affiliation(s)
- Javed Mahmood
- a Division of Translational Radiation Sciences, Department of Radiation Oncology , School of Medicine, University of Maryland , Baltimore , MD , USA
| | - Sarthak R Zaveri
- a Division of Translational Radiation Sciences, Department of Radiation Oncology , School of Medicine, University of Maryland , Baltimore , MD , USA
| | - Stephanie C Murti
- a Division of Translational Radiation Sciences, Department of Radiation Oncology , School of Medicine, University of Maryland , Baltimore , MD , USA
| | - Allen A Alexander
- a Division of Translational Radiation Sciences, Department of Radiation Oncology , School of Medicine, University of Maryland , Baltimore , MD , USA
| | - Caroline Q Connors
- a Division of Translational Radiation Sciences, Department of Radiation Oncology , School of Medicine, University of Maryland , Baltimore , MD , USA
| | - Hem D Shukla
- b Department of Pharmaceutical Sciences , School of Pharmacy, University of Maryland , Baltimore , MD , USA
| | - Zeljko Vujaskovic
- a Division of Translational Radiation Sciences, Department of Radiation Oncology , School of Medicine, University of Maryland , Baltimore , MD , USA
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Lu Y, Tang L, Li Y, He Q. High glucose-induced fibronectin upregulation in cultured mesangial cells involves caveolin-1-dependent RhoA-GTP activation via Src kinase. Mol Med Rep 2016; 14:963-8. [PMID: 27220778 DOI: 10.3892/mmr.2016.5312] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 03/21/2016] [Indexed: 11/05/2022] Open
Abstract
Increasing evidence indicates that diabetes-mediated renal interstitial fibrosis through extracellular matrix (ECM) protein accumulation is an important event in the development of diabetic kidney disease (DKD), however, the underlying mechanism remains unclear. In the current study, it was observed that high levels of glucose (HG) time‑ and dose-dependently increased the production of the ECM protein, fibronectin (FN), in primary rat mesangial cells. Inhibition of the Rho pathway blocked HG‑induced FN upregulation. HG‑induced RhoA activation was prevented by inhibiting caveolae with filipin III or caveolin‑1 siRNA and rescued by exogenous caveolin‑1. HG also increased caveolin-1/Src association and activated Src kinase, whereas the inhibition of Src blocked RhoA activation and FN upregulation. Src-mediated phosphorylation of caveolin‑1 on Y14 has also been implicated in signaling responses. Overexpression of the nonphosphorylatable caveolin‑1 Y14A mutant prevented the HG‑induced RhoA activation and FN upregulation. In conclusion, HG‑induced FN upregulation requires caveolae and caveolin‑1 to interact with RhoA and Src kinases. Interference with Src/caveolin-1/RhoA signaling may provide novel mechanistic targets for the treatment of DKD.
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Hashimoto T, Tsuneki M, Foster TR, Santana JM, Bai H, Wang M, Hu H, Hanisch JJ, Dardik A. Membrane-mediated regulation of vascular identity. ACTA ACUST UNITED AC 2016; 108:65-84. [PMID: 26992081 DOI: 10.1002/bdrc.21123] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 02/22/2016] [Indexed: 02/06/2023]
Abstract
Vascular diseases span diverse pathology, but frequently arise from aberrant signaling attributed to specific membrane-associated molecules, particularly the Eph-ephrin family. Originally recognized as markers of embryonic vessel identity, Eph receptors and their membrane-associated ligands, ephrins, are now known to have a range of vital functions in vascular physiology. Interactions of Ephs with ephrins at cell-to-cell interfaces promote a variety of cellular responses such as repulsion, adhesion, attraction, and migration, and frequently occur during organ development, including vessel formation. Elaborate coordination of Eph- and ephrin-related signaling among different cell populations is required for proper formation of the embryonic vessel network. There is growing evidence supporting the idea that Eph and ephrin proteins also have postnatal interactions with a number of other membrane-associated signal transduction pathways, coordinating translation of environmental signals into cells. This article provides an overview of membrane-bound signaling mechanisms that define vascular identity in both the embryo and the adult, focusing on Eph- and ephrin-related signaling. We also discuss the role and clinical significance of this signaling system in normal organ development, neoplasms, and vascular pathologies.
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Affiliation(s)
- Takuya Hashimoto
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut.,Department of Surgery, VA Connecticut Healthcare Systems, West Haven, Connecticut.,Department of Vascular Surgery, The University of Tokyo, Tokyo, Japan
| | - Masayuki Tsuneki
- Division of Cancer Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Trenton R Foster
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut
| | - Jeans M Santana
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut
| | - Hualong Bai
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut.,Department of Vascular Surgery, The 1st Affiliated Hospital of Zhengzhou University, Henan, China
| | - Mo Wang
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut
| | - Haidi Hu
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut
| | - Jesse J Hanisch
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut
| | - Alan Dardik
- The Department of Surgery and the Vascular Biology and Therapeutics Program, Yale University, New Haven, Connecticut.,Department of Surgery, VA Connecticut Healthcare Systems, West Haven, Connecticut
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Lin Y, Wang P, Liu YH, Shang XL, Chen LY, Xue YX. DT(270-326) , a Truncated Diphtheria Toxin, Increases Blood-Tumor Barrier Permeability by Upregulating the Expression of Caveolin-1. CNS Neurosci Ther 2016; 22:477-87. [PMID: 26861687 DOI: 10.1111/cns.12519] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 01/07/2016] [Accepted: 01/07/2016] [Indexed: 01/13/2023] Open
Abstract
AIM The nontoxic mutant of diphtheria toxin (DT) has been demonstrated to act as a receptor-specific carrier protein to delivery drug into brain. Recent research showed that the truncated "receptorless" DT was still capable of being internalized into cells. This study investigated the effects and potential mechanisms of DT(270-326) , a truncated "receptorless" DT, on the permeability of the blood-tumor barrier (BTB). METHODS BTB and GECs were subjected to DT(270-326) treatment. HRP flux assays, immunofluorescent, co-immunoprecipitation, Western blot, CCK-8, and Flow cytometry analysis were used to evaluate the effects of DT(270-326) administration. RESULTS Our results revealed that 5 μM of DT(270-326) significantly increased the permeability of BTBin vitro, which reached its peak at 6 h. The permeability was reduced by pretreatment with filipinIII. DT(270-326) co-localized and interacted with caveolin-1 via its caveolin-binding motif. The mRNA and protein expression levels of caveolin-1 were identical with the changes of BTB permeability. The upregulated expression of caveolin-1 was associated with Src kinase-dependent tyrosine phosphorylation of caveolin-1, which subsequently induced phosphorylation and inactivation of the transcription factor Egr-1. The combination of DT(270-326) with doxorubicin significantly enhanced the loss of cell viability and apoptosis of U87 glioma cells in contrast to doxorubicin alone. CONCLUSIONS DT(270-326) might provide a novel strategy to increase the delivery of macromolecular therapeutic agents across the BTB.
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Affiliation(s)
- Yang Lin
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang, China
| | - Ping Wang
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang, China
| | - Yun-Hui Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiu-Li Shang
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Liang-Yu Chen
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Xue Xue
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang, China
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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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Asbagh LA, Vazquez I, Vecchione L, Budinska E, De Vriendt V, Baietti MF, Steklov M, Jacobs B, Hoe N, Singh S, Imjeti NS, Zimmermann P, Sablina A, Tejpar S. The tyrosine phosphatase PTPRO sensitizes colon cancer cells to anti-EGFR therapy through activation of SRC-mediated EGFR signaling. Oncotarget 2015; 5:10070-83. [PMID: 25301722 PMCID: PMC4259406 DOI: 10.18632/oncotarget.2458] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Inappropriate activation of epidermal growth factor receptor (EGFR) plays a causal role in many cancers including colon cancer. The activation of EGFR by phosphorylation is balanced by receptor kinase and protein tyrosine phosphatase activities. However, the mechanisms of negative EGFR regulation by tyrosine phosphatases remain largely unexplored. Our previous results indicate that protein tyrosine phosphatase receptor type O (PTPRO) is down-regulated in a subset of colorectal cancer (CRC) patients with a poor prognosis. Here we identified PTPRO as a phosphatase that negatively regulates SRC by directly dephosphorylating Y416 phosphorylation site. SRC activation triggered by PTPRO down-regulation induces phosphorylation of both EGFR at Y845 and the c-CBL ubiquitin ligase at Y731. Increased EGFR phosphorylation at Y845 promotes its receptor activity, whereas enhanced phosphorylation of c-CBL triggers its degradation promoting EGFR stability. Importantly, hyperactivation of SRC/EGFR signaling triggered by loss of PTPRO leads to high resistance of colon cancer to EGFR inhibitors. Our results not only highlight the PTPRO contribution in negative regulation of SRC/EGFR signaling but also suggest that tumors with low PTPRO expression may be therapeutically targetable by anti-SRC therapies.
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Affiliation(s)
- Layka Abbasi Asbagh
- Laboratory of Molecular Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium. Laboratory for Mechanisms of Cell Transformation, VIB Center for the Biology of Disease, VIB, Belgium. Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Iria Vazquez
- Laboratory for Mechanisms of Cell Transformation, VIB Center for the Biology of Disease, VIB, Belgium. Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Loredana Vecchione
- Laboratory of Molecular Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Eva Budinska
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Veerle De Vriendt
- Laboratory of Molecular Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Maria Francesca Baietti
- Laboratory for Mechanisms of Cell Transformation, VIB Center for the Biology of Disease, VIB, Belgium. Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Mikhail Steklov
- Laboratory for Mechanisms of Cell Transformation, VIB Center for the Biology of Disease, VIB, Belgium. Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Bart Jacobs
- Laboratory of Molecular Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
| | | | | | - Naga-Sailaja Imjeti
- Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068-CNRS UMR7258, Aix-Marseille Université, Institut Paoli-Calmettes, Marseille, France. Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Pascale Zimmermann
- Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068-CNRS UMR7258, Aix-Marseille Université, Institut Paoli-Calmettes, Marseille, France. Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Anna Sablina
- Laboratory for Mechanisms of Cell Transformation, VIB Center for the Biology of Disease, VIB, Belgium. Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Sabine Tejpar
- Laboratory of Molecular Digestive Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
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Wang H, Wang AX, Aylor K, Barrett EJ. Caveolin-1 phosphorylation regulates vascular endothelial insulin uptake and is impaired by insulin resistance in rats. Diabetologia 2015; 58:1344-53. [PMID: 25748795 PMCID: PMC4417063 DOI: 10.1007/s00125-015-3546-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 02/13/2015] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS As insulin entry into muscle interstitium is rate-limiting for its overall peripheral action, defining the route and regulation of its entry is critical. Caveolin-1 is required for caveola formation in vascular endothelial cells (ECs) and for EC insulin uptake. Whether this requirement reflects simply the need for caveola availability or involves a more active role for caveolae/caveolin-1 is not known. Here, we examined the role of insulin-stimulated tyrosine 14 (Tyr(14))-caveolin-1 phosphorylation in mediating EC insulin uptake and the role of cellular Src-kinase (cSrc), TNF-α/IL-6 and high fat diet (HFD) in regulating this process. METHODS Freshly isolated ECs from normal or HFD-fed rats and/or cultured ECs were treated with FITC-labelled or regular insulin with or without a Src or phosphotidylinositol-3-kinase inhibitor, TNF-α or IL-6, or transfecting FLAG-tagged wild-type (WT) or mutant (Y14F) caveolin-1. Tyr(14)-caveolin-1/Tyr(416) cSrc phosphorylation and FITC-insulin uptake were quantified by immunostaining and/or western blots. RESULTS Insulin stimulated Tyr(14)-caveolin-1 phosphorylation during EC insulin uptake. Inhibiting cSrc, but not phosphotidylinositol-3-kinase, reduced insulin-stimulated caveolin-1 phosphorylation. Furthermore, inhibiting cSrc reduced FITC-insulin uptake by ∼50%. Overexpression of caveolin-1Y14F inhibited, while overexpression of WT caveolin-1 increased, FITC-insulin uptake. Exposure of ECs to TNF-α or IL-6, or to 1-week HFD feeding eliminated insulin-stimulated caveolin-1 phosphorylation and inhibited FITC-insulin uptake to a similar extent. CONCLUSIONS/INTERPRETATION Insulin stimulation of its own uptake requires caveolin-1 phosphorylation and Src-kinase activity. HFD in vivo and proinflammatory cytokines in vitro both inhibit this process.
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Affiliation(s)
- Hong Wang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Virginia Health System, 450 Ray C. Hunt Drive, Box 801410, Charlottesville, VA, 22908, USA,
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Zou R, Wu Z, Cui S. Electroacupuncture pretreatment attenuates blood‑brain barrier disruption following cerebral ischemia/reperfusion. Mol Med Rep 2015; 12:2027-34. [PMID: 25936438 DOI: 10.3892/mmr.2015.3672] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 03/18/2015] [Indexed: 11/06/2022] Open
Abstract
Disruption of the blood-brain barrier (BBB) and subsequent brain edema are major contributors to the pathogenesis of ischemic stroke, however, current clinical therapeutic methods remains unsatisfactory. Electroacupuncture (EA) pretreatment has a protective effect against cerebral ischemia/reperfusion (I/R). However, the underlying mechanisms remain to be fully elucidated. In the present study, the effect of EA pretreatment on BBB disruption was investigated in a focal I/R rat model. Male Sprague-Dawley rats (280-320 g) were pretreated with EA at the acupoint 'Baihui' (GV20) 30 min/day, for five days consecutively prior to focal cerebral I/R, which was induced by middle cerebral artery occlusion (MCAO) for 2 h. The results demonstrated that the infarction volume, brain water content and neurological deficits increased in the MCAO model rats at 3 h and 24 h post-reperfusion, and were attenuated significantly by EA pretreatment. Furthermore, electron microscopy examination confirmed a reduction in brain edema reduction in the EA pretreated rats. Western blot analysis revealed that the tight junction proteins between endothelial cells, including claudin-5, occludin, were significantly degraded, while the protein expression of phosphorylated (p-)caveolin-1 and p-Akt increased following reperfusion, all of which were alleviated by EA pretreatment. However, no significant differences were observed in the expression of caveolin-1 or Akt. Overall, the results demonstrated that EA pretreatment significantly reduced BBB permeability and brain edema, which were correlated with alleviation of the degradation of tight junction proteins and inhibition of the expression of p-caveolin-1 in the endothelial cells.
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Affiliation(s)
- Rong Zou
- Department of Anesthesiology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Zhouquan Wu
- First Clinical College, Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Suyang Cui
- Department of Anesthesiology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
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