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Manori B, Vaknin A, Vaňková P, Nitzan A, Zaidel-Bar R, Man P, Giladi M, Haitin Y. Chloride intracellular channel (CLIC) proteins function as fusogens. Nat Commun 2024; 15:2085. [PMID: 38453905 PMCID: PMC10920813 DOI: 10.1038/s41467-024-46301-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 02/19/2024] [Indexed: 03/09/2024] Open
Abstract
Chloride Intracellular Channel (CLIC) family members uniquely transition between soluble and membrane-associated conformations. Despite decades of extensive functional and structural studies, CLICs' function as ion channels remains debated, rendering our understanding of their physiological role incomplete. Here, we expose the function of CLIC5 as a fusogen. We demonstrate that purified CLIC5 directly interacts with the membrane and induces fusion, as reflected by increased liposomal diameter and lipid and content mixing between liposomes. Moreover, we show that this activity is facilitated by acidic pH, a known trigger for CLICs' transition to a membrane-associated conformation, and that increased exposure of the hydrophobic inter-domain interface is crucial for this process. Finally, mutation of a conserved hydrophobic interfacial residue diminishes the fusogenic activity of CLIC5 in vitro and impairs excretory canal extension in C. elegans in vivo. Together, our results unravel the long-sought physiological role of these enigmatic proteins.
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Grants
- 1721/16 Israel Science Foundation (ISF)
- 1653/21 Israel Science Foundation (ISF)
- 3308/20 Israel Science Foundation (ISF)
- 01214 Israel Cancer Research Fund (Israel Cancer Research Fund, Inc.)
- 19202 Israel Cancer Research Fund (Israel Cancer Research Fund, Inc.)
- 20230029 Israel Cancer Association (ICA)
- CZ.1.05/1.1.00/02.0109 Ministerstvo školstva, vedy, výskumu a športu Slovenskej republiky (Ministry of Education, Science, Research and Sport of the Slovak Republic)
- 731077 EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020)
- The Claire and Amedee Maratier Institute for the Study of Blindness and Visual Disorders, Faculty of Medicine, Tel-Aviv University.
- The Czech Infrastructure for Integrative Structural Biology (CIISB) grant (LM2023042).
- The Kahn Foundation's Orion project, Tel Aviv Sourasky Medical Center, Israel. The Claire and Amedee Maratier Institute for the Study of Blindness and Visual Disorders, Faculty of Medicine, Tel-Aviv University.
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Affiliation(s)
- Bar Manori
- Department of Physiology and Pharmacology, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 6997801, Israel
| | - Alisa Vaknin
- School of Chemistry, Raymond & Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Pavla Vaňková
- Institute of Biotechnology of the Czech Academy of Sciences, Division BioCeV, Prumyslova 595, 252 50, Vestec, Czech Republic
| | - Anat Nitzan
- Department of Cell and Developmental Biology, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 6997801, Israel
| | - Ronen Zaidel-Bar
- Department of Cell and Developmental Biology, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 6997801, Israel
| | - Petr Man
- Institute of Microbiology of the Czech Academy of Sciences, Division BioCeV, Prumyslova 595, 252 50, Vestec, Czech Republic
| | - Moshe Giladi
- Department of Physiology and Pharmacology, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 6997801, Israel.
- Tel Aviv Sourasky Medical Center, Tel Aviv, 6423906, Israel.
| | - Yoni Haitin
- Department of Physiology and Pharmacology, Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 6997801, Israel.
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, 6997801, Israel.
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2
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Zhang X, Yang Q, Zhang R, Zhang Y, Zeng W, Yu Q, Zeng M, Gan J, Li H, Yang L, Gao Q, Jiang X. Sodium Danshensu ameliorates cerebral ischemia/reperfusion injury by inhibiting CLIC4/NLRP3 inflammasome-mediated endothelial cell pyroptosis. Biofactors 2024; 50:74-88. [PMID: 37458329 DOI: 10.1002/biof.1991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 07/03/2023] [Indexed: 02/20/2024]
Abstract
Endothelial pyroptosis promotes cerebral ischemia/reperfusion injury (CIRI). Sodium Danshensu (SDSS) has been shown to attenuate CIRI and have anti-inflammatory properties in endothelial cells. However, the mechanism and effect of SDSS on alleviating endothelial pyroptosis after CIRI remains poorly understood. Thus, we aimed to investigate the efficacy and mechanism of SDSS in reducing endothelial pyroptosis. It has been shown that SDSS administration inhibited NLRP3 inflammasome-mediated pyroptosis. As demonstrated by protein microarrays, molecular docking, CETSA and ITDRFCETSA , SDSS bound strongly to CLIC4. Furthermore, SDSS can decrease its expression and inhibit its translocation. Its effectiveness was lowered by CLIC4 overexpression but not by knockdown. Overall The beneficial effect of SDSS against CIRI in this study can be ascribed to blocking endothelial pyroptosis by binding to CLIC4 and then inhibiting chloride efflux-dependent NLRP3 inflammasome activation.
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Affiliation(s)
- Xiaolu Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Qiuyue Yang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Ruifeng Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Yilin Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Wenyun Zeng
- Oncology Department, Ganzhou People's Hospital, Ganzhou, People's Republic of China
| | - Qun Yu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Miao Zeng
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Jiali Gan
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Huhu Li
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Lin Yang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Qing Gao
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
| | - Xijuan Jiang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China
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3
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Reitzner SM, Emanuelsson EB, Arif M, Kaczkowski B, Kwon AT, Mardinoglu A, Arner E, Chapman MA, Sundberg CJ. Molecular profiling of high-level athlete skeletal muscle after acute endurance or resistance exercise - A systems biology approach. Mol Metab 2024; 79:101857. [PMID: 38141850 PMCID: PMC10805945 DOI: 10.1016/j.molmet.2023.101857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023] Open
Abstract
OBJECTIVE Long-term high-level exercise training leads to improvements in physical performance and multi-tissue adaptation following changes in molecular pathways. While skeletal muscle baseline differences between exercise-trained and untrained individuals have been previously investigated, it remains unclear how training history influences human multi-omics responses to acute exercise. METHODS We recruited and extensively characterized 24 individuals categorized as endurance athletes with >15 years of training history, strength athletes or control subjects. Timeseries skeletal muscle biopsies were taken from M. vastus lateralis at three time-points after endurance or resistance exercise was performed and multi-omics molecular analysis performed. RESULTS Our analyses revealed distinct activation differences of molecular processes such as fatty- and amino acid metabolism and transcription factors such as HIF1A and the MYF-family. We show that endurance athletes have an increased abundance of carnitine-derivates while strength athletes increase specific phospholipid metabolites compared to control subjects. Additionally, for the first time, we show the metabolite sorbitol to be substantially increased with acute exercise. On transcriptional level, we show that acute resistance exercise stimulates more gene expression than acute endurance exercise. This follows a specific pattern, with endurance athletes uniquely down-regulating pathways related to mitochondria, translation and ribosomes. Finally, both forms of exercise training specialize in diverging transcriptional directions, differentiating themselves from the transcriptome of the untrained control group. CONCLUSIONS We identify a "transcriptional specialization effect" by transcriptional narrowing and intensification, and molecular specialization effects on metabolomic level Additionally, we performed multi-omics network and cluster analysis, providing a novel resource of skeletal muscle transcriptomic and metabolomic profiling in highly trained and untrained individuals.
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Affiliation(s)
- Stefan M Reitzner
- Department Physiology & Pharmacology, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden; Department Women's and Children's Health, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden.
| | - Eric B Emanuelsson
- Department Physiology & Pharmacology, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden
| | - Muhammad Arif
- Science for Life Laboratory, KTH - Royal Institute of Technology, Tomtebodavägen 23, 171 65 Stockholm, Sweden
| | - Bogumil Kaczkowski
- Center for Integrative Medical Sciences, RIKEN Yokohama, 1 Chome-7-22 Suehirocho, Tsurumi Ward, Yokohama, Kanagawa 230-0045, Japan
| | - Andrew Tj Kwon
- Center for Integrative Medical Sciences, RIKEN Yokohama, 1 Chome-7-22 Suehirocho, Tsurumi Ward, Yokohama, Kanagawa 230-0045, Japan
| | - Adil Mardinoglu
- Science for Life Laboratory, KTH - Royal Institute of Technology, Tomtebodavägen 23, 171 65 Stockholm, Sweden; Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, Guy's Hospital, Great Maze Pond, London, SE1 1UL, United Kingdom
| | - Erik Arner
- Center for Integrative Medical Sciences, RIKEN Yokohama, 1 Chome-7-22 Suehirocho, Tsurumi Ward, Yokohama, Kanagawa 230-0045, Japan; Graduate School of Integrated Sciences for Life, Hiroshima University, 1 Chome-3-3-2 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Mark A Chapman
- Department Physiology & Pharmacology, Department Women's and Children's Health, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden; Department of Integrated Engineering, University of San Diego, 5998 Alcalà Park, San Diego, CA 92110, USA
| | - Carl Johan Sundberg
- Department Physiology & Pharmacology, Department Women's and Children's Health, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden; Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Tomtebodavägen 18A, 171 65 Solna, Sweden; Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé 8, 141 52 Huddinge, Sweden
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Loyo-Celis V, Patel D, Sanghvi S, Kaur K, Ponnalagu D, Zheng Y, Bindra S, Bhachu HR, Deschenes I, Gururaja Rao S, Singh H. Biophysical characterization of chloride intracellular channel 6 (CLIC6). J Biol Chem 2023; 299:105349. [PMID: 37838179 PMCID: PMC10641671 DOI: 10.1016/j.jbc.2023.105349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 09/27/2023] [Accepted: 09/30/2023] [Indexed: 10/16/2023] Open
Abstract
Chloride intracellular channels (CLICs) are a family of proteins that exist in soluble and transmembrane forms. The newest discovered member of the family CLIC6 is implicated in breast, ovarian, lung gastric, and pancreatic cancers and is also known to interact with dopamine-(D(2)-like) receptors. The soluble structure of the channel has been resolved, but the exact physiological role of CLIC6, biophysical characterization, and the membrane structure remain unknown. Here, we aimed to characterize the biophysical properties of this channel using a patch-clamp approach. To determine the biophysical properties of CLIC6, we expressed CLIC6 in HEK-293 cells. On ectopic expression, CLIC6 localizes to the plasma membrane of HEK-293 cells. We established the biophysical properties of CLIC6 by using electrophysiological approaches. Using various anions and potassium (K+) solutions, we determined that CLIC6 is more permeable to chloride-(Cl-) as compared to bromide-(Br-), fluoride-(F-), and K+ ions. In the whole-cell configuration, the CLIC6 currents were inhibited after the addition of 10 μM of IAA-94 (CLIC-specific blocker). CLIC6 was also found to be regulated by pH and redox potential. We demonstrate that the histidine residue at 648 (H648) in the C terminus and cysteine residue in the N terminus (C487) are directly involved in the pH-induced conformational change and redox regulation of CLIC6, respectively. Using qRT-PCR, we identified that CLIC6 is most abundant in the lung and brain, and we recorded the CLIC6 current in mouse lung epithelial cells. Overall, we have determined the biophysical properties of CLIC6 and established it as a Cl- channel.
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Affiliation(s)
- Veronica Loyo-Celis
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Devendra Patel
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Shridhar Sanghvi
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA; Department of Molecular Cellular and Developmental Biology, The Ohio State University, Columbus, Ohio, USA
| | - Kamalpreet Kaur
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Devasena Ponnalagu
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA; Department of Pharmacology, The University of Washington, Seattle, Washington, USA
| | - Yang Zheng
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Sahej Bindra
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Harmeet Rireika Bhachu
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Isabelle Deschenes
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | | | - Harpreet Singh
- Department of Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, Ohio, USA; Department of Molecular Cellular and Developmental Biology, The Ohio State University, Columbus, Ohio, USA.
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5
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Zhang L, Chen X, Yao S, Zheng L, Yang X, Wang Y, Li X, Wu E, Tuo B. Intracellular chloride channel 1 and tumor. Am J Cancer Res 2023; 13:3300-3314. [PMID: 37693147 PMCID: PMC10492100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 07/08/2023] [Indexed: 09/12/2023] Open
Abstract
As the major intracellular anion, chloride plays an important role in maintaining intracellular and extracellular ion homeostasis, osmotic pressure, and cell volume. Intracellular chloride channel 1, which has the physiological role of forming membrane proteins in the lipid bilayer and playing ion channels, is a hot research topic in recent years. It has been found that CLIC1 does not only act as an ion channel but also participates in cell cycle regulation, apoptosis, and intracellular oxidation; thus, it participates in the proliferation, invasion, and migration of various tumor cells in various systems throughout the body. At the same time, CLIC1 is highly expressed in tumor cells and is associated with malignancy and a poor prognosis. This paper reviews the pathological mechanisms of CLIC1 in systemic diseases, which is important for the early diagnosis, treatment, and prognosis of systemic diseases associated with CLIC1 expression.
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Affiliation(s)
- Li Zhang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Xingyue Chen
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Shun Yao
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Liming Zheng
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Xingyue Yang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Yongfeng Wang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Xin Li
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Enqin Wu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
| | - Biguang Tuo
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical UniversityZunyi, Guizhou, China
- The Collaborative Innovation Center of Tissue Damage Repair and Regenerative Medicine of Zunyi Medical UniversityZunyi, Guizhou, China
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Kleinjan ML, Mao DY, Naiche LA, Joshi JC, Gupta A, Jesse JJ, Shaye DD, Mehta D, Kitajewski J. CLIC4 Regulates Endothelial Barrier Control by Mediating PAR1 Signaling via RhoA. Arterioscler Thromb Vasc Biol 2023; 43:1441-1454. [PMID: 37317855 PMCID: PMC10527476 DOI: 10.1161/atvbaha.123.319206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 05/30/2023] [Indexed: 06/16/2023]
Abstract
BACKGROUND Endothelial CLICs (chloride intracellular channel proteins) CLIC1 and CLIC4 are required for the GPCRs (G-protein-coupled receptors) S1PR1 (sphingosine-1-phosphate receptor 1) and S1PR3 to activate the small GTPases Rac1 (Ras-related C3 botulinum toxin substrate 1) and RhoA (Ras homolog family member A). To determine whether CLIC1 and CLIC4 function in additional endothelial GPCR pathways, we evaluated CLIC function in thrombin signaling via the thrombin-regulated PAR1 (protease-activated receptor 1) and downstream effector RhoA. METHODS We assessed the ability of CLIC1 and CLIC4 to relocalize to cell membranes in response to thrombin in human umbilical vein endothelial cells (HUVEC). We examined CLIC1 and CLIC4 function in HUVEC by knocking down expression of each CLIC protein and compared thrombin-mediated RhoA or Rac1 activation, ERM (ezrin/radixin/moesin) phosphorylation, and endothelial barrier modulation in control and CLIC knockdown HUVEC. We generated a conditional murine allele of Clic4 and examined PAR1-mediated lung microvascular permeability and retinal angiogenesis in mice with endothelial-specific loss of Clic4. RESULTS Thrombin promoted relocalization of CLIC4, but not CLIC1, to HUVEC membranes. Knockdown of CLIC4 in HUVEC reduced thrombin-mediated RhoA activation, ERM phosphorylation, and endothelial barrier disruption. Knockdown of CLIC1 did not reduce thrombin-mediated RhoA activity but prolonged the RhoA and endothelial barrier response to thrombin. Endothelial-specific deletion of Clic4 in mice reduced lung edema and microvascular permeability induced by PAR1 activating peptide. CONCLUSIONS CLIC4 is a critical effector of endothelial PAR1 signaling and is required to regulate RhoA-mediated endothelial barrier disruption in cultured endothelial cells and murine lung endothelium. CLIC1 was not critical for thrombin-mediated barrier disruption but contributed to the barrier recovery phase after thrombin treatment.
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Affiliation(s)
- Matthew L. Kleinjan
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - De Yu Mao
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - L. A. Naiche
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Jagdish C. Joshi
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA
| | - Ahana Gupta
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Jordan J. Jesse
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Daniel D. Shaye
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Dolly Mehta
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA
| | - Jan Kitajewski
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
- University of Illinois Cancer Center, Chicago, IL, USA
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Alzaydi MM, Abdul-Salam VB, Whitwell HJ, Russomanno G, Glynos A, Capece D, Szabadkai G, Wilkins MR, Wojciak-Stothard B. Intracellular Chloride Channels Regulate Endothelial Metabolic Reprogramming in Pulmonary Arterial Hypertension. Am J Respir Cell Mol Biol 2023; 68:103-115. [PMID: 36264759 PMCID: PMC9817916 DOI: 10.1165/rcmb.2022-0111oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Mitochondrial fission and a metabolic switch from oxidative phosphorylation to glycolysis are key features of vascular pathology in pulmonary arterial hypertension (PAH) and are associated with exuberant endothelial proliferation and apoptosis. The underlying mechanisms are poorly understood. We describe the contribution of two intracellular chloride channel proteins, CLIC1 and CLIC4, both highly expressed in PAH and cancer, to mitochondrial dysfunction and energy metabolism in PAH endothelium. Pathological overexpression of CLIC proteins induces mitochondrial fragmentation, inhibits mitochondrial cristae formation, and induces metabolic shift toward glycolysis in human pulmonary artery endothelial cells, consistent with changes observed in patient-derived cells. Interactions of CLIC proteins with structural components of the inner mitochondrial membrane offer mechanistic insights. Endothelial CLIC4 excision and mitofusin 2 supplementation have protective effects in human PAH cells and preclinical PAH. This study is the first to demonstrate the key role of endothelial intracellular chloride channels in the regulation of mitochondrial structure, biogenesis, and metabolic reprogramming in expression of the PAH phenotype.
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Affiliation(s)
- Mai M. Alzaydi
- National Heart and Lung Institute,,National Center for Biotechnology, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia
| | - Vahitha B. Abdul-Salam
- National Heart and Lung Institute,,Centre for Cardiovascular Medicine and Device Innovation, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Harry J. Whitwell
- National Phenome Centre and Imperial Clinical Phenotyping Centre, and,Section of Bioanalytical Chemistry, Division of Systems Medicine, Department of Metabolism, Digestion, and Reproduction, and
| | - Giusy Russomanno
- National Heart and Lung Institute,,Medical Research Council (MRC) Centre for Drug Safety Science, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular, and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Angelos Glynos
- Mitochondrial Biology Unit, Medical Research Council, University of Cambridge, Cambridge, United Kingdom; and
| | - Daria Capece
- Centre for Cell Signalling and Inflammation, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Gyorgy Szabadkai
- Cell and Developmental Biology, University College London, London, United Kingdom
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8
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Bousseau S, Lahm T. Hungry for Chloride: Reprogramming Endothelial Cell Metabolism in Pulmonary Arterial Hypertension. Am J Respir Cell Mol Biol 2023; 68:11-12. [PMID: 36269721 PMCID: PMC9817906 DOI: 10.1165/rcmb.2022-0386ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Simon Bousseau
- Division of Pulmonary, Sleep, and Critical Care Medicine National Jewish Health Denver, Colorado
| | - Tim Lahm
- Division of Pulmonary, Sleep, and Critical Care Medicine National Jewish Health Denver, Colorado
- Division of Pulmonary Sciences and Critical Care Medicine University of Colorado Anschutz Medical Campus Aurora, Colorado
- Rocky Mountain Regional Veteran Affairs Medical Center Aurora, Colorado
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9
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Gezdirici A, Kalaycik Şengül Ö, Doğan M, Özgüven BY, Akbulut E. Biallelic Novel USP53 Splicing Variant Disrupting the Gene Function that Causes Cholestasis Phenotype and Review of the Literature. Mol Syndromol 2023; 13:471-484. [PMID: 36660033 PMCID: PMC9843568 DOI: 10.1159/000523937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 03/02/2022] [Indexed: 01/22/2023] Open
Abstract
Introduction Hereditary cholestasis is a heterogeneous group of liver diseases that mostly show autosomal recessive inheritance. The phenotype of cholestasis is highly variable. Molecular genetic testing offers an useful approach to differentiate different types of cholestasis because some symptoms and findings overlap. Biallelic variants in USP53 have recently been reported in cholestasis phenotype. Methods In this study, we aimed to characterize clinical findings and biological insights on a novel USP53 splice variant causing cholestasis phenotype and provided a review of the literature. We performed whole-exome sequencing and then confirmed it with Sanger sequencing. In addition, as a result of in silico analyses and cDNA analysis, we showed that the USP53 protein in our patient was shortened. Results We report a novel splice variant (NM_019050.2:c.238-1G>C) in the USP53 gene via whole-exome sequencing in a patient with cholestasis phenotype. This variant was confirmed by Sanger sequencing and was a result of family segregation analysis; it was found to be in a heterozygous state in the parents and the other healthy elder brother of our patient. According to in silico analyses, the change in the splice region resulted in an increase in the length of exon 2, whereas the stop codon after the additional 3 amino acids (VTF) caused the protein to terminate prematurely. Thus, the mature USP53 protein, consisting of 1,073 amino acids, has been reduced to a small protein of 82 amino acids. Conclusion We propose a model for the tertiary structure of USP53 for the first time, and together with all these data, we support the association of biallelic variants of the USP53 gene with cholestasis phenotype. We also present a comparison of previously reported patients with USP53-associated cholestasis phenotype to contribute to the literature.
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Affiliation(s)
- Alper Gezdirici
- Department of Medical Genetics, Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey,*Alper Gezdirici,
| | - Özlem Kalaycik Şengül
- Department of Pediatric Gastroenterology, Hepatology and Nutrition, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Mustafa Doğan
- Department of Medical Genetics, Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey
| | - Banu Y. Özgüven
- Department of Pathology, Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey
| | - Ekrem Akbulut
- Department of Bioengineering, Malatya Turgut Ozal University, Malatya, Turkey
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10
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Structure-based discovery and in vitro validation of inhibitors of chloride intracellular channel 4 protein. Comput Struct Biotechnol J 2022; 21:688-701. [PMID: 36659928 PMCID: PMC9826898 DOI: 10.1016/j.csbj.2022.12.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 12/25/2022] Open
Abstract
The use of computer-aided methods have continued to propel accelerated drug discovery across various disease models, interestingly allowing the specific inhibition of pathogenic targets. Chloride Intracellular Channel Protein 4 (CLIC4) is a novel class of intracellular ion channel highly implicated in tumor and vascular biology. It regulates cell proliferation, apoptosis and angiogenesis; and is involved in multiple pathologic signaling pathways. Absence of specific inhibitors however impedes its advancement to translational research. Here, we integrate structural bioinformatics and experimental research approaches for the discovery and validation of small-molecule inhibitors of CLIC4. High-affinity allosteric binders were identified from a library of 1615 Food and Drug Administration (FDA)-approved drugs via a high-performance computing-powered blind-docking approach, resulting in the selection of amphotericin B and rapamycin. NMR assays confirmed the binding and conformational disruptive effects of both drugs while they also reversed stress-induced membrane translocation of CLIC4 and inhibited endothelial cell migration. Structural and dynamics simulation studies further revealed that the inhibitory mechanisms of these compounds were hinged on the allosteric modulation of the catalytic glutathione (GSH)-like site loop and the extended catalytic β loop which may elicit interference with the catalytic activities of CLIC4. Structure-based insights from this study provide the basis for the selective targeting of CLIC4 to treat the associated pathologies.
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Key Words
- A9C, 9-Anthracenecarboxylic acid
- AMPhB, Amphotericin B
- Ad, Adenovirus
- Allosteric inhibition
- Bad, BCL2 associated agonist of cell death
- Bcl-2, B-cell lymphoma 2
- Bcl-xL, B-cell lymphoma-extra large
- CDK, Cyclin-dependent kinases
- CLIC, Chloride intracellular channel protein
- Chloride intracellular channel protein 4
- Computational high-throughput screening
- DAPI, 4′,6-diamidino-2-phenylindole
- DIDS, 4,4′-Diisothiocyano-2,2′-stilbenedisulfonic acid
- DMSO, Dimethyl sulfoxide
- DOPE, Discrete optimized protein energy
- GPU, Graphics Processing Unit
- GSH-like catalytic site
- GST, glutathione S-transferases
- GUI, Graphical User Interface
- HEPES, (4-(2-hydroxyethyl)− 1-piperazineethanesulfonic acid;
- HIF, Hypoxia-inducible factor
- HSQC, Heteronuclear single quantum coherence spectroscopy
- HUVEC, Human umbilical vein endothelial cells
- IKKβ, Inhibitor of nuclear kappa-B-kinase subunit beta
- JNK, c-Jun N-terminal kinase
- MKK6, Mitogen-activated protein kinase kinase-6
- MOI, Multiplicity of infection
- NF-κB, Nuclear factor kappa-light-chain-enhancer of activated B cells
- NMR, Nuclear magnetic resonance
- NPT, The constant-temperature, constant-pressure ensemble
- NaCL, Sodium chloride
- Nuclear magnetic resonance
- PAH, Pulmonary arterial hypertension
- RAPA, Rapamycin
- SASA, Solvent accessible surface area
- SEK1, Dual specificity mitogen-activated protein kinase kinase 4
- Smad, Suppressor of Mothers against Decapentaplegic
- Structure-based drug discovery
- TEV, Tobacco etch virus
- TIP3P, Transferable intermolecular potential 3 P
- TROSY, Transverse relaxation optimized spectroscopy
- UCSF, University of California, San Francisco
- VEGF, Vascular endothelial growth factor
- p38, Mitogen activated protein kinases
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11
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Arena AF, Escudero J, Shaye DD. A metazoan-specific C-terminal motif in EXC-4 and Gα-Rho/Rac signaling regulate cell outgrowth during tubulogenesis in C. elegans. Development 2022; 149:285944. [PMID: 36398726 PMCID: PMC10108608 DOI: 10.1242/dev.200748] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 11/07/2022] [Indexed: 11/19/2022]
Abstract
Chloride intracellular channels (CLICs) are conserved proteins for which the cellular and molecular functions remain mysterious. An important insight into CLIC function came from the discovery that Caenorhabditis elegans EXC-4/CLIC regulates morphogenesis of the excretory canal (ExCa) cell, a single-cell tube. Subsequent work showed that mammalian CLICs regulate vascular development and angiogenesis, and human CLIC1 can rescue exc-4 mutants, suggesting conserved function in biological tube formation (tubulogenesis) and maintenance. However, the cell behaviors and signaling pathways regulated by EXC-4/CLICs during tubulogenesis in vivo remain largely unknown. We report a new exc-4 mutation, affecting a C-terminal residue conserved in virtually all metazoan CLICs, that reveals a specific role for EXC-4 in ExCa outgrowth. Cell culture studies suggest a function for CLICs in heterotrimeric G protein (Gα/β/γ)-Rho/Rac signaling, and Rho-family GTPases are common regulators of cell outgrowth. Using our new exc-4 mutant, we describe a previously unknown function for Gα-encoding genes (gpa-12/Gα12/13, gpa-7/Gαi, egl-30/Gαq and gsa-1/Gαs), ced-10/Rac and mig-2/RhoG in EXC-4-mediated ExCa outgrowth. Our results demonstrate that EXC-4/CLICs are primordial players in Gα-Rho/Rac-signaling, a pathway that is crucial for tubulogenesis in C. elegans and in vascular development.
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Affiliation(s)
- Anthony F Arena
- Department of Physiology and Biophysics, University of Illinois at Chicago - College of Medicine, Chicago, IL 60612, USA.,Graduate Education in Biomedical Sciences program, University of Illinois at Chicago - College of Medicine, Chicago, IL 60612, USA
| | - Julianna Escudero
- Department of Physiology and Biophysics, University of Illinois at Chicago - College of Medicine, Chicago, IL 60612, USA
| | - Daniel D Shaye
- Department of Physiology and Biophysics, University of Illinois at Chicago - College of Medicine, Chicago, IL 60612, USA.,Center for Cardiovascular Research, University of Illinois at Chicago - College of Medicine, Chicago, IL 60612, USA
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12
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Ozaki S, Mikami K, Kunieda T, Tanaka J. Chloride Intracellular Channel Proteins (CLICs) and Malignant Tumor Progression: A Focus on the Preventive Role of CLIC2 in Invasion and Metastasis. Cancers (Basel) 2022; 14:cancers14194890. [PMID: 36230813 PMCID: PMC9562003 DOI: 10.3390/cancers14194890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/03/2022] [Accepted: 10/03/2022] [Indexed: 11/27/2022] Open
Abstract
Simple Summary Although chloride intracellular channel proteins (CLICs) have been identified as ion channel proteins, their true functions are still elusive. Recent in silico analyses show that CLICs may be prognostic markers in cancer. This review focuses on CLIC2 that plays preventive roles in malignant cell invasion and metastasis. CLIC2 is secreted extracellularly and binds to matrix metalloproteinase 14 (MMP14), while inhibiting its activity. As a result, CLIC2 may contribute to the development/maintenance of junctions between blood vessel endothelial cells and the inhibition of invasion and metastasis of tumor cells. CLIC2 may be a novel therapeutic target for malignancies. Abstract CLICs are the dimorphic protein present in both soluble and membrane fractions. As an integral membrane protein, CLICs potentially possess ion channel activity. However, it is not fully clarified what kinds of roles CLICs play in physiological and pathological conditions. In vertebrates, CLICs are classified into six classes: CLIC1, 2, 3, 4, 5, and 6. Recently, in silico analyses have revealed that the expression level of CLICs may have prognostic significance in cancer. In this review, we focus on CLIC2, which has received less attention than other CLICs, and discuss its role in the metastasis and invasion of malignant tumor cells. CLIC2 is expressed at higher levels in benign tumors than in malignant ones, most likely preventing tumor cell invasion into surrounding tissues. CLIC2 is also expressed in the vascular endothelial cells of normal tissues and maintains their intercellular adhesive junctions, presumably suppressing the hematogenous metastasis of malignant tumor cells. Surprisingly, CLIC2 is localized in secretory granules and secreted into the extracellular milieu. Secreted CLIC2 binds to MMP14 and inhibits its activity, leading to suppressed MMP2 activity. CLIC4, on the other hand, promotes MMP14 activity. These findings challenge the assumption that CLICs are ion channels, implying that they could be potential new targets for the treatment of malignant tumors.
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Affiliation(s)
- Saya Ozaki
- Department of Neurosurgery, Graduate School of Medicine, Ehime University, Toon 791-0295, Japan
- Department of Neurosurgery, National Cerebral and Cardiovascular Center Hospital, Suita 564-8565, Japan
- Correspondence: (S.O.); (J.T.)
| | - Kanta Mikami
- Department of Molecular and Cellular Physiology, Graduate School of Medicine, Ehime University, Toon 791-0295, Japan
| | - Takeharu Kunieda
- Department of Neurosurgery, Graduate School of Medicine, Ehime University, Toon 791-0295, Japan
| | - Junya Tanaka
- Department of Molecular and Cellular Physiology, Graduate School of Medicine, Ehime University, Toon 791-0295, Japan
- Correspondence: (S.O.); (J.T.)
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13
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Al Khamici H, Sanchez VC, Yan H, Cataisson C, Michalowski AM, Yang HH, Li L, Lee MP, Huang J, Yuspa SH. The oxidoreductase CLIC4 is required to maintain mitochondrial function and resistance to exogenous oxidants in breast cancer cells. J Biol Chem 2022; 298:102275. [PMID: 35863434 PMCID: PMC9418444 DOI: 10.1016/j.jbc.2022.102275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 02/07/2023] Open
Abstract
The chloride intracellular channel-4 (CLIC4) is one of the six highly conserved proteins in the CLIC family that share high structural homology with GST-omega in the GST superfamily. While CLIC4 is a multifunctional protein that resides in multiple cellular compartments, the discovery of its enzymatic glutaredoxin-like activity in vitro suggested that it could function as an antioxidant. Here, we found that deleting CLIC4 from murine 6DT1 breast tumor cells using CRISPR enhanced the accumulation of reactive oxygen species (ROS) and sensitized cells to apoptosis in response to H2O2 as a ROS-inducing agent. In intact cells, H2O2 increased the expression of both CLIC4 mRNA and protein. In addition, increased superoxide production in 6DT1 cells lacking CLIC4 was associated with mitochondrial hyperactivity including increased mitochondrial membrane potential and mitochondrial organelle enlargement. In the absence of CLIC4, however, H2O2-induced apoptosis was associated with low expression and degradation of the antiapoptotic mitochondrial protein Bcl2 and the negative regulator of mitochondrial ROS, UCP2. Furthermore, transcriptomic profiling of H2O2-treated control and CLIC4-null cells revealed upregulation of genes associated with ROS-induced apoptosis and downregulation of genes that sustain mitochondrial functions. Accordingly, tumors that formed from transplantation of CLIC4-deficient 6DT1 cells were highly necrotic. These results highlight a critical role for CLIC4 in maintaining redox-homeostasis and mitochondrial functions in 6DT1 cells. Our findings also raise the possibility of targeting CLIC4 to increase cancer cell sensitivity to chemotherapeutic drugs that are based on elevating ROS in cancer cells.
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Affiliation(s)
- Heba Al Khamici
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Vanesa C Sanchez
- Office of Science, Division of Nonclinical Science, Center for Tobacco Products, U.S. Food and Drug Administration, Silver Spring, Maryland, USA
| | - Hualong Yan
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Christophe Cataisson
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Aleksandra M Michalowski
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Howard H Yang
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Luowei Li
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Maxwell P Lee
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Jing Huang
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA
| | - Stuart H Yuspa
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health. Bethesda, Maryland, USA.
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14
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Sanchez VC, Yang HH, Craig-Lucas A, Dubois W, Carofino BL, Lack J, Dwyer JE, Simpson RM, Cataisson C, Lee MP, Luo J, Hunter KW, Yuspa SH. Host CLIC4 expression in the tumor microenvironment is essential for breast cancer metastatic competence. PLoS Genet 2022; 18:e1010271. [PMID: 35727842 PMCID: PMC9249210 DOI: 10.1371/journal.pgen.1010271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 07/01/2022] [Accepted: 05/22/2022] [Indexed: 11/18/2022] Open
Abstract
The TGF-β-regulated Chloride Intracellular Channel 4 (CLIC4) is an essential participant in the formation of breast cancer stroma. Here, we used data available from the TCGA and METABRIC datasets to show that CLIC4 expression was higher in breast cancers from younger women and those with early-stage metastatic disease. Elevated CLIC4 predicted poor outcome in breast cancer patients and was linked to the TGF-β pathway. However, these associations did not reveal the underlying biological contribution of CLIC4 to breast cancer progression. Constitutive ablation of host Clic4 in two murine metastatic breast cancer models nearly eliminated lung metastases without reducing primary tumor weight, while tumor cells ablated of Clic4 retained metastatic capability in wildtype hosts. Thus, CLIC4 was required for host metastatic competence. Pre- and post-metastatic proteomic analysis identified circulating pro-metastatic soluble factors that differed in tumor-bearing CLIC4-deficient and wildtype hosts. Vascular abnormalities and necrosis increased in primary tumors from CLIC4-deficient hosts. Transcriptional profiles of both primary tumors and pre-metastatic lungs of tumor-bearing CLIC4-deficient hosts were consistent with a microenvironment where inflammatory pathways were elevated. Altogether, CLIC4 expression in human breast cancers may serve as a prognostic biomarker; therapeutic targeting of CLIC4 could reduce primary tumor viability and host metastatic competence.
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Affiliation(s)
- Vanesa C. Sanchez
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Howard H. Yang
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Alayna Craig-Lucas
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Wendy Dubois
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Brandi L. Carofino
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Justin Lack
- NIAID Collaborative Bioinformatics Resource (NCBR), National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland, United States of America
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, Maryland, United States of America
| | - Jennifer E. Dwyer
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - R. Mark Simpson
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Christophe Cataisson
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Max P. Lee
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Ji Luo
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Kent W. Hunter
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Stuart H. Yuspa
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Center, National Institutes of Health, Bethesda, Maryland, United States of America
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15
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Zhou W, Menkhorst E, Dimitriadis E. Characterization of chloride intracellular channel 4 in the regulation of human trophoblast function. Placenta 2022; 119:24-30. [DOI: 10.1016/j.placenta.2022.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/20/2021] [Accepted: 01/17/2022] [Indexed: 11/27/2022]
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16
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Muley A, Kim Uh M, Salazar-De Simone G, Swaminathan B, James JM, Murtomaki A, Youn SW, McCarron JD, Kitajewski C, Gnarra Buethe M, Riitano G, Mukouyama YS, Kitajewski J, Shawber CJ. Unique functions for Notch4 in murine embryonic lymphangiogenesis. Angiogenesis 2021; 25:205-224. [PMID: 34665379 PMCID: PMC9054879 DOI: 10.1007/s10456-021-09822-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 10/08/2021] [Indexed: 11/08/2022]
Abstract
In mice, embryonic dermal lymphatic development is well understood and used to study gene functions in lymphangiogenesis. Notch signaling is an evolutionarily conserved pathway that modulates cell fate decisions, which has been shown to both inhibit and promote dermal lymphangiogenesis. Here, we demonstrate distinct roles for Notch4 signaling versus canonical Notch signaling in embryonic dermal lymphangiogenesis. Actively growing embryonic dermal lymphatics expressed NOTCH1, NOTCH4, and DLL4 which correlated with Notch activity. In lymphatic endothelial cells (LECs), DLL4 activation of Notch induced a subset of Notch effectors and lymphatic genes, which were distinctly regulated by Notch1 and Notch4 activation. Treatment of LECs with VEGF-A or VEGF-C upregulated Dll4 transcripts and differentially and temporally regulated the expression of Notch1 and Hes/Hey genes. Mice nullizygous for Notch4 had an increase in the closure of the lymphangiogenic fronts which correlated with reduced vessel caliber in the maturing lymphatic plexus at E14.5 and reduced branching at E16.5. Activation of Notch4 suppressed LEC migration in a wounding assay significantly more than Notch1, suggesting a dominant role for Notch4 in regulating LEC migration. Unlike Notch4 nulls, inhibition of canonical Notch signaling by expressing a dominant negative form of MAML1 (DNMAML) in Prox1+ LECs led to increased lymphatic density consistent with an increase in LEC proliferation, described for the loss of LEC Notch1. Moreover, loss of Notch4 did not affect LEC canonical Notch signaling. Thus, we propose that Notch4 signaling and canonical Notch signaling have distinct functions in the coordination of embryonic dermal lymphangiogenesis.
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Affiliation(s)
- Ajit Muley
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Minji Kim Uh
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA.,Department of Pharmacology, Columbia University Medical Center, New York, NY, 10032, USA
| | | | - Bhairavi Swaminathan
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Jennifer M James
- Laboratory of Stem Cell and Neuro-Vascular Biology, Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Aino Murtomaki
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA.,Wihuri Research Institute, Biomedicum Helsinki, Haartmaninkatu, 8, 00290, Helsinki, Finland.,Translational Cancer Medicine Program, Faculty of Medicine, Helsinki Institute of Life Science, University of Helsinki, FI-00014, Helsinki, Finland
| | - Seock Won Youn
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Joseph D McCarron
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Chris Kitajewski
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Maria Gnarra Buethe
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Gloria Riitano
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA.,Departments of Molecular Medicine and Experimental Medicine, Sapienza University, 00185, Rome, Italy
| | - Yoh-Suke Mukouyama
- Laboratory of Stem Cell and Neuro-Vascular Biology, Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Jan Kitajewski
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Carrie J Shawber
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, 10032, USA. .,Department of Surgery, Columbia University Medical Center, New York, NY, 10032, USA.
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17
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Wang H, An J, He S, Liao C, Wang J, Tuo B. Chloride intracellular channels as novel biomarkers for digestive system tumors (Review). Mol Med Rep 2021; 24:630. [PMID: 34278487 DOI: 10.3892/mmr.2021.12269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 05/19/2021] [Indexed: 11/06/2022] Open
Abstract
Digestive system malignant tumors are common tumors, and the traditional treatment methods for these tumors include surgical resection, radiotherapy, chemotherapy, and molecularly targeted drugs. However, diagnosis remains challenging, and the early detection of postoperative recurrence is complicated. Therefore, it is necessary to explore novel biomarkers to facilitate clinical diagnosis and treatment. Accumulating evidence supports the crucial role of chloride channels in the development of multiple types of cancers. Given that chloride channels are widely expressed and involved in cell proliferation, apoptosis and cell cycle, among other processes, they may serve as a promising diagnostic and therapeutic target. Chloride intracellular channels (CLICs) are a class of chloride channels that are upregulated or downregulated in certain types of cancer. Furthermore, in certain cases, during cell cycle progression, the localization and function of the cytosolic form of the transmembrane proteins of CLICs are also altered, which may provide a key target for cancer therapy. The aim of the present review was to focus on CLICs as biomarkers for digestive system tumors.
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Affiliation(s)
- Hui Wang
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Jiaxing An
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Suyu He
- The Fourth Department of the Digestive Disease Center, Suining Central Hospital, Suining, Sichuan 629000, P.R. China
| | - Chengcheng Liao
- Special Key Laboratory of Oral Disease Research, Higher Education Institution in Guizhou Province, School of Stomatology, Zunyi Medical University, Zunyi, Guizhou 563006, P.R. China
| | - Juan Wang
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
| | - Biguang Tuo
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563003, P.R. China
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18
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Mao DY, Kleinjan ML, Jilishitz I, Swaminathan B, Obinata H, Komarova YA, Bayless KJ, Hla T, Kitajewski JK. CLIC1 and CLIC4 mediate endothelial S1P receptor signaling to facilitate Rac1 and RhoA activity and function. Sci Signal 2021; 14:14/679/eabc0425. [PMID: 33879602 DOI: 10.1126/scisignal.abc0425] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Chloride intracellular channels 1 (CLIC1) and 4 (CLIC4) are expressed in endothelial cells and regulate angiogenic behaviors in vitro, and the expression of Clic4 is important for vascular development and function in mice. Here, we found that CLIC1 and CLIC4 in endothelial cells regulate critical G protein-coupled receptor (GPCR) pathways associated with vascular development and disease. In cultured endothelial cells, we found that CLIC1 and CLIC4 transiently translocated to the plasma membrane in response to sphingosine 1-phosphate (S1P). Both CLIC1 and CLIC4 were essential for mediating S1P-induced activation of the small guanosine triphosphatase (GTPase) Rac1 downstream of S1P receptor 1 (S1PR1). In contrast, only CLIC1 was essential for S1P-induced activation of the small GTPase RhoA downstream of S1PR2 and S1PR3. Neither were required for other S1P-S1PR signaling outputs. Rescue experiments revealed that CLIC1 and CLIC4 were not functionally interchangeable, suggesting distinct and specific functions for CLICs in transducing GPCR signaling. These CLIC-mediated mechanisms were critical for S1P-induced stimulation of the barrier function in endothelial cell monolayers. Our results define CLICs as previously unknown players in the pathways linking GPCRs to small GTPases and vascular endothelial function.
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Affiliation(s)
- De Yu Mao
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Matthew L Kleinjan
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Bhairavi Swaminathan
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Hideru Obinata
- Education and Research Support Center, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yulia A Komarova
- Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, USA
| | - Kayla J Bayless
- Department of Molecular & Cellular Medicine, Texas A&M System Health Science Center, Bryan, TX, USA
| | - Timothy Hla
- Vascular Biology Program, Boston Children's Hospital, Department of Surgery, Harvard Medical School, Boston, MA, USA
| | - Jan K Kitajewski
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA.
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19
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Tiwari A, Iida M, Kosnopfel C, Abbariki M, Menegakis A, Fehrenbacher B, Maier J, Schaller M, Brucker SY, Wheeler DL, Harari PM, Rothbauer U, Schittek B, Zips D, Toulany M. Blocking Y-Box Binding Protein-1 through Simultaneous Targeting of PI3K and MAPK in Triple Negative Breast Cancers. Cancers (Basel) 2020; 12:cancers12102795. [PMID: 33003386 PMCID: PMC7601769 DOI: 10.3390/cancers12102795] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 09/25/2020] [Indexed: 12/22/2022] Open
Abstract
Simple Summary Triple-negative breast cancer (TNBC) is associated with the high rates of relapse and metastasis and poor survival. YB-1 is overexpressed in TNBC tumor tissues. In the present study, we demonstrated that S102 phosphorylation of YB-1 in TNBC cell lines depend on the mutation status of the components of the MAPK/ERK and PI3K/Akt pathways. Simultaneous targeting of MEK and PI3K was found to be the most effective approach to block YB-1 phosphorylation and to inhibit YB-1 dependent cell proliferation. YBX1 knockout was sufficient to block TNBC tumor growth. Abstract The multifunctional protein Y-box binding protein-1 (YB-1) regulates all the so far described cancer hallmarks including cell proliferation and survival. The MAPK/ERK and PI3K/Akt pathways are also the major pathways involved in cell growth, proliferation, and survival, and are the frequently hyperactivated pathways in human cancers. A gain of function mutation in KRAS mainly leads to the constitutive activation of the MAPK pathway, while the activation of the PI3K/Akt pathway occurs either through the loss of PTEN or a gain of function mutation of the catalytic subunit alpha of PI3K (PIK3CA). In this study, we investigated the underlying signaling pathway involved in YB-1 phosphorylation at serine 102 (S102) in KRAS(G13D)-mutated triple-negative breast cancer (TNBC) MDA-MB-231 cells versus PIK3CA(H1047R)/PTEN(E307K) mutated TNBC MDA-MB-453 cells. Our data demonstrate that S102 phosphorylation of YB-1 in KRAS-mutated cells is mainly dependent on the MAPK/ERK pathway, while in PIK3CA/PTEN-mutated cells, YB-1 S102 phosphorylation is entirely dependent on the PI3K/Akt pathway. Independent of the individual dominant pathway regulating YB-1 phosphorylation, dual targeting of MEK and PI3K efficiently inhibited YB-1 phosphorylation and blocked cell proliferation. This represents functional crosstalk between the two pathways. Our data obtained from the experiments, applying pharmacological inhibitors and genetic approaches, shows that YB-1 is a key player in cell proliferation, clonogenic activity, and tumor growth of TNBC cells through the MAPK and PI3K pathways. Therefore, dual inhibition of these two pathways or single targeting of YB-1 may be an effective strategy to treat TNBC.
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Affiliation(s)
- Aadhya Tiwari
- Division of Radiobiology and Molecular Environmental Research, Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany; (A.T.); (D.Z.)
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Mari Iida
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Corinna Kosnopfel
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Mahyar Abbariki
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Apostolos Menegakis
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Birgit Fehrenbacher
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Julia Maier
- Natural and Medical Sciences Institute, University of Tuebingen, 72770 Reutlingen, Germany; (J.M.); (U.R.)
- Pharmaceutical Biotechnology, University of Tuebingen, 72076 Tuebingen, Germany
| | - Martin Schaller
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Sara Y. Brucker
- Department of Women’s Health, University of Tuebingen, 72076 Tuebingen, Germany;
| | - Deric L. Wheeler
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Paul M. Harari
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Ulrich Rothbauer
- Natural and Medical Sciences Institute, University of Tuebingen, 72770 Reutlingen, Germany; (J.M.); (U.R.)
- Pharmaceutical Biotechnology, University of Tuebingen, 72076 Tuebingen, Germany
| | - Birgit Schittek
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Daniel Zips
- Division of Radiobiology and Molecular Environmental Research, Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany; (A.T.); (D.Z.)
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Mahmoud Toulany
- Division of Radiobiology and Molecular Environmental Research, Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany; (A.T.); (D.Z.)
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
- Correspondence: ; Tel.: +49-7071-29-85832
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Changes in Proteome of Fibroblasts Isolated from Psoriatic Skin Lesions. Int J Mol Sci 2020; 21:ijms21155363. [PMID: 32731552 PMCID: PMC7432102 DOI: 10.3390/ijms21155363] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 11/16/2022] Open
Abstract
The dermal fibroblasts are in constant contact with the cells of the immune system and skin epidermis. Therefore, they are essential for the development of lesions in psoriasis. The aim of this study was to assess the changes in the proteomic profile of fibroblasts in the dermis of psoriasis patients, and to discuss the most significant changes and their potential consequences. The proteomic results indicate that fibroblast dysfunction arises from the upregulation of proinflammatory factors and antioxidant proteins, as well as those involved in signal transduction and participating in proteolytic processes. Moreover, downregulated proteins in psoriatic fibroblasts are mainly responsible for the transcription/translation processes, glycolysis/ adenosine triphosphate synthesis and structural molecules. These changes can directly affect intercellular signaling and promote the hyperproliferation of epidermal cells. A better understanding of the metabolic effects of the proteomic changes observed could guide the development of new pharmacotherapies for psoriasis.
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21
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Wagner N, Wagner KD. PPAR Beta/Delta and the Hallmarks of Cancer. Cells 2020; 9:cells9051133. [PMID: 32375405 PMCID: PMC7291220 DOI: 10.3390/cells9051133] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 04/30/2020] [Accepted: 05/01/2020] [Indexed: 12/17/2022] Open
Abstract
Peroxisome proliferator-activated receptors (PPARs) belong to the nuclear hormone receptor family. Three different isoforms, PPAR alpha, PPAR beta/delta and PPAR gamma have been identified. They all form heterodimers with retinoic X receptors to activate or repress downstream target genes dependent on the presence/absence of ligands and coactivators or corepressors. PPARs differ in their tissue expression profile, ligands and specific agonists and antagonists. PPARs attract attention as potential therapeutic targets for a variety of diseases. PPAR alpha and gamma agonists are in clinical use for the treatment of dyslipidemias and diabetes. For both receptors, several clinical trials as potential therapeutic targets for cancer are ongoing. In contrast, PPAR beta/delta has been suggested as a therapeutic target for metabolic syndrome. However, potential risks in the settings of cancer are less clear. A variety of studies have investigated PPAR beta/delta expression or activation/inhibition in different cancer cell models in vitro, but the relevance for cancer growth in vivo is less well documented and controversial. In this review, we summarize critically the knowledge of PPAR beta/delta functions for the different hallmarks of cancer biological capabilities, which interplay to determine cancer growth.
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22
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Zhang X, Wang Z, Li W, Huang R, Zheng D, Bi G. MicroRNA-217-5p ameliorates endothelial cell apoptosis induced by ox-LDL by targeting CLIC4. Nutr Metab Cardiovasc Dis 2020; 30:523-533. [PMID: 31744714 DOI: 10.1016/j.numecd.2019.09.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 09/24/2019] [Accepted: 09/24/2019] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND AIMS Endothelial cell apoptosis plays an essential role in the pathogenesis of atherosclerosis. MicroRNAs and chloride intracellular channels (CLICs) have been verified to participate in the endothelial cell apoptosis process, however, the underlying molecular mechanisms are still unclear. The main aim of this study was to investigate the biological effects of microRNA-217-5p (miR-217-5p) and CLIC4 on endothelial cell apoptosis in atherosclerosis. METHODS AND RESULTS An atherosclerotic mouse model (n = 18) was constructed by feeding apolipo protein E knockout ApoE(-/-) mice with high-fat diet for 12 weeks. An atherosclerotic cell model was established by treating human aortic endothelial cells with oxidized low-density lipoprotein (ox-LDL; 50 μg/mL) for 24 h. Quantitative real-time polymerase chain reaction and immunofluorescent staining confirmed the downregulation of miR-217-5p and upregulation of CLIC4 in atherosclerotic endothelial cells. Combined with western blot, flow cytometry assay and Hoechst staining, we demonstrated that miR-217-5p upregulation or CLIC4 knockdown regulated the apoptosis-related genes, ameliorated mitochondrial membrane permeability and therefore inhibited the apoptosis of aortic endothelial cells induced by ox-LDL. We further confirmed that miR-217-5p inhibited apoptosis of endothelial cells through targeting CLIC4 using luciferase report assay and rescue experiments. CONCLUSION We revealed for the first time that miR-217-5p inhibited apoptosis of endothelial cells in atherosclerosis and identified CLIC4 as a novel target of miR-217-5p. Our work provides a potential therapeutic approach for the treatment of atherosclerosis.
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Affiliation(s)
- Xiaotian Zhang
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Zhimin Wang
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Weishuai Li
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Rui Huang
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Dongming Zheng
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Guorong Bi
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China.
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Gururaja Rao S, Patel NJ, Singh H. Intracellular Chloride Channels: Novel Biomarkers in Diseases. Front Physiol 2020; 11:96. [PMID: 32116799 PMCID: PMC7034325 DOI: 10.3389/fphys.2020.00096] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/27/2020] [Indexed: 12/27/2022] Open
Abstract
Ion channels are integral membrane proteins present on the plasma membrane as well as intracellular membranes. In the human genome, there are more than 400 known genes encoding ion channel proteins. Ion channels are known to regulate several cellular, organellar, and physiological processes. Any mutation or disruption in their function can result in pathological disorders, both common or rare. Ion channels present on the plasma membrane are widely acknowledged for their role in various biological processes, but in recent years, several studies have pointed out the importance of ion channels located in intracellular organelles. However, ion channels located in intracellular organelles are not well-understood in the context of physiological conditions, such as the generation of cellular excitability and ionic homeostasis. Due to the lack of information regarding their molecular identity and technical limitations of studying them, intracellular organelle ion channels have thus far been overlooked as potential therapeutic targets. In this review, we focus on a novel class of intracellular organelle ion channels, Chloride Intracellular Ion Channels (CLICs), mainly documented for their role in cardiovascular, neurophysiology, and tumor biology. CLICs have a single transmembrane domain, and in cells, they exist in cytosolic as well as membranous forms. They are predominantly present in intracellular organelles and have recently been shown to be localized to cardiomyocyte mitochondria as well as exosomes. In fact, a member of this family, CLIC5, is the first mitochondrial chloride channel to be identified on the molecular level in the inner mitochondrial membrane, while another member, CLIC4, is located predominantly in the outer mitochondrial membrane. In this review, we discuss this unique class of intracellular chloride channels, their role in pathologies, such as cardiovascular, cancer, and neurodegenerative diseases, and the recent developments concerning their usage as theraputic targets.
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Affiliation(s)
- Shubha Gururaja Rao
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Neel J Patel
- Department of Cardiology, Hospital of the University of Pennsylvania, Philadelphia, PA, United States
| | - Harpreet Singh
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
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24
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Carofino BL, Dinshaw KM, Ho PY, Cataisson C, Michalowski AM, Ryscavage A, Alkhas A, Wong NW, Koparde V, Yuspa SH. Head and neck squamous cancer progression is marked by CLIC4 attenuation in tumor epithelium and reciprocal stromal upregulation of miR-142-3p, a novel post-transcriptional regulator of CLIC4. Oncotarget 2019; 10:7251-7275. [PMID: 31921386 PMCID: PMC6944452 DOI: 10.18632/oncotarget.27387] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/02/2019] [Indexed: 02/06/2023] Open
Abstract
Chloride intracellular channel 4 (CLIC4) is a tumor suppressor implicated in processes including growth arrest, differentiation, and apoptosis. CLIC4 protein expression is diminished in the tumor parenchyma during progression in squamous cell carcinoma (SCC) and other neoplasms, but the underlying mechanisms have not been identified. Data from The Cancer Genome Atlas suggest this is not driven by genomic alterations. However, screening and functional assays identified miR-142-3p as a regulator of CLIC4. CLIC4 and miR-142-3p expression are inversely correlated in head and neck (HN) SCC and cervical SCC, particularly in advanced stage cancers. In situ localization revealed that stromal immune cells, not tumor cells, are the predominant source of miR-142-3p in HNSCC. Furthermore, HNSCC single-cell expression data demonstrated that CLIC4 is lower in tumor epithelial cells than in stromal fibroblasts and endothelial cells. Tumor-specific downregulation of CLIC4 was confirmed in an SCC xenograft model concurrent with immune cell infiltration and miR-142-3p upregulation. These findings provide the first evidence of CLIC4 regulation by miRNA. Furthermore, the distinct localization of CLIC4 and miR-142-3p within the HNSCC tumor milieu highlight the limitations of bulk tumor analysis and provide critical considerations for both future mechanistic studies and use of miR-142-3p as a HNSCC biomarker.
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Affiliation(s)
- Brandi L. Carofino
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Kayla M. Dinshaw
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- Department of Molecular and Cellular Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Pui Yan Ho
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- Department of Pediatrics, Division of Stem Cell Transplantation and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Christophe Cataisson
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Aleksandra M. Michalowski
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Andrew Ryscavage
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | | | - Nathan W. Wong
- CCR Collaborative Bioinformatics Resource (CCBR), Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Vishal Koparde
- CCR Collaborative Bioinformatics Resource (CCBR), Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Stuart H. Yuspa
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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25
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Depletion of endogenous miRNA-378-3p increases peak cell density of CHO DP12 cells and is correlated with elevated levels of ubiquitin carboxyl-terminal hydrolase 14. J Biotechnol 2018; 288:30-40. [DOI: 10.1016/j.jbiotec.2018.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/27/2018] [Accepted: 10/28/2018] [Indexed: 01/01/2023]
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26
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Gururaja Rao S, Ponnalagu D, Patel NJ, Singh H. Three Decades of Chloride Intracellular Channel Proteins: From Organelle to Organ Physiology. CURRENT PROTOCOLS IN PHARMACOLOGY 2018; 80:11.21.1-11.21.17. [PMID: 30040212 PMCID: PMC6060641 DOI: 10.1002/cpph.36] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Intracellular organelles are membranous structures central for maintaining cellular physiology and the overall health of the cell. To maintain cellular function, intracellular organelles are required to tightly regulate their ionic homeostasis. Any imbalance in ionic concentrations can disrupt energy production (mitochondria), protein degradation (lysosomes), DNA replication (nucleus), or cellular signaling (endoplasmic reticulum). Ionic homeostasis is also important for volume regulation of intracellular organelles and is maintained by cation and anion channels as well as transporters. One of the major classes of ion channels predominantly localized to intracellular membranes is chloride intracellular channel proteins (CLICs). They are non-canonical ion channels with six homologs in mammals, existing as either soluble or integral membrane protein forms, with dual functions as enzymes and channels. Provided in this overview is a brief introduction to CLICs, and a summary of recent information on their localization, biophysical properties, and physiological roles. © 2018 by John Wiley & Sons, Inc.
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Affiliation(s)
- Shubha Gururaja Rao
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Devasena Ponnalagu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Neel J Patel
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Harpreet Singh
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
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Duran CL, Howell DW, Dave JM, Smith RL, Torrie ME, Essner JJ, Bayless KJ. Molecular Regulation of Sprouting Angiogenesis. Compr Physiol 2017; 8:153-235. [PMID: 29357127 DOI: 10.1002/cphy.c160048] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The term angiogenesis arose in the 18th century. Several studies over the next 100 years laid the groundwork for initial studies performed by the Folkman laboratory, which were at first met with some opposition. Once overcome, the angiogenesis field has flourished due to studies on tumor angiogenesis and various developmental models that can be genetically manipulated, including mice and zebrafish. In addition, new discoveries have been aided by the ability to isolate primary endothelial cells, which has allowed dissection of various steps within angiogenesis. This review will summarize the molecular events that control angiogenesis downstream of biochemical factors such as growth factors, cytokines, chemokines, hypoxia-inducible factors (HIFs), and lipids. These and other stimuli have been linked to regulation of junctional molecules and cell surface receptors. In addition, the contribution of cytoskeletal elements and regulatory proteins has revealed an intricate role for mobilization of actin, microtubules, and intermediate filaments in response to cues that activate the endothelium. Activating stimuli also affect various focal adhesion proteins, scaffold proteins, intracellular kinases, and second messengers. Finally, metalloproteinases, which facilitate matrix degradation and the formation of new blood vessels, are discussed, along with our knowledge of crosstalk between the various subclasses of these molecules throughout the text. Compr Physiol 8:153-235, 2018.
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Affiliation(s)
- Camille L Duran
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - David W Howell
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Jui M Dave
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Rebecca L Smith
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
| | - Melanie E Torrie
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Jeffrey J Essner
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Kayla J Bayless
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, Texas, USA
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28
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Edwards AK, Glithero K, Grzesik P, Kitajewski AA, Munabi NC, Hardy K, Tan QK, Schonning M, Kangsamaksin T, Kitajewski JK, Shawber CJ, Wu JK. NOTCH3 regulates stem-to-mural cell differentiation in infantile hemangioma. JCI Insight 2017; 2:93764. [PMID: 29093274 PMCID: PMC5752265 DOI: 10.1172/jci.insight.93764] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 09/25/2017] [Indexed: 12/27/2022] Open
Abstract
Infantile hemangioma (IH) is a vascular tumor that begins with rapid vascular proliferation shortly after birth, followed by vascular involution in early childhood. We have found that NOTCH3, a critical regulator of mural cell differentiation and maturation, is expressed in hemangioma stem cells (HemSCs), suggesting that NOTCH3 may function in HemSC-to-mural cell differentiation and pathological vessel stabilization. Here, we demonstrate that NOTCH3 is expressed in NG2+PDGFRβ+ perivascular HemSCs and CD31+GLUT1+ hemangioma endothelial cells (HemECs) in proliferating IHs and becomes mostly restricted to the αSMA+NG2loPDGFRβlo mural cells in involuting IHs. NOTCH3 knockdown in HemSCs inhibited in vitro mural cell differentiation and perturbed αSMA expression. In a mouse model of IH, NOTCH3 knockdown or systemic expression of the NOTCH3 inhibitor, NOTCH3 Decoy, significantly decreased IH blood flow, vessel caliber, and αSMA+ perivascular cell coverage. Thus, NOTCH3 is necessary for HemSC-to-mural cell differentiation, and adequate perivascular cell coverage of IH vessels is required for IH vessel stability.
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Affiliation(s)
- Andrew K. Edwards
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
| | - Kyle Glithero
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
- Department of Surgery, Maimonides Medical Center, Brooklyn, New York, USA
| | - Peter Grzesik
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
- Department of Anesthesia, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Alison A. Kitajewski
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Naikhoba C.O. Munabi
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
- Department of Surgery, University of Southern California, Los Angeles, California, USA
| | - Krista Hardy
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Qian Kun Tan
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
| | - Michael Schonning
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
| | - Thaned Kangsamaksin
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Jan K. Kitajewski
- Department of Ob/Gyn, Columbia University College of Physicians and Surgeons, New York, New York, USA
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Carrie J. Shawber
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
- Department of Ob/Gyn, Columbia University College of Physicians and Surgeons, New York, New York, USA
| | - June K. Wu
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA
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Argenzio E, Moolenaar WH. Emerging biological roles of Cl- intracellular channel proteins. J Cell Sci 2017; 129:4165-4174. [PMID: 27852828 DOI: 10.1242/jcs.189795] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Cl- intracellular channels (CLICs) are a family of six evolutionary conserved cytosolic proteins that exist in both soluble and membrane-associated forms; however, their functions have long been elusive. Soluble CLICs adopt a glutathione S-transferase (GST)-fold, can induce ion currents in artificial membranes and show oxidoreductase activity in vitro, but there is no convincing evidence of CLICs having such activities in vivo. Recent studies have revealed a role for CLIC proteins in Rho-regulated cortical actin dynamics as well as vesicular trafficking and integrin recycling, the latter of which are under the control of Rab GTPases. In this Commentary, we discuss the emerging roles of CLIC proteins in these processes and the lessons learned from gene-targeting studies. We also highlight outstanding questions regarding the molecular function(s) of these important but still poorly understood proteins.
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Affiliation(s)
- Elisabetta Argenzio
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam 1066CX, The Netherlands
| | - Wouter H Moolenaar
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam 1066CX, The Netherlands
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30
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Cong Z, Wu H, Guo Z, Qin T, Xu Y, Jing H, Wang Y, Shen Y. High expression of C-X-C chemokine receptor 4 and Notch1 is predictive of lymphovascular invasion and poor prognosis in lung adenocarcinoma. Tumour Biol 2017; 39:1010428317708698. [PMID: 28618922 DOI: 10.1177/1010428317708698] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Zhuangzhuang Cong
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Haiwei Wu
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Zhong Guo
- Department of Cardiothoracic Surgery, Jinling Hospital, School of Medicine, Southern Medical University, Guangzhou, China
| | - Tao Qin
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yang Xu
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Hua Jing
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yanqing Wang
- Department of Cardiology, The 81st Hospital of PLA, Nanjing, China
| | - Yi Shen
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
- Department of Cardiothoracic Surgery, Jinling Hospital, School of Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, China
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Abstract
Mitochondria are the "power house" of a cell continuously generating ATP to ensure its proper functioning. The constant production of ATP via oxidative phosphorylation demands a large electrochemical force that drives protons across the highly selective and low-permeable mitochondrial inner membrane. Besides the conventional role of generating ATP, mitochondria also play an active role in calcium signaling, generation of reactive oxygen species (ROS), stress responses, and regulation of cell-death pathways. Deficiencies in these functions result in several pathological disorders like aging, cancer, diabetes, neurodegenerative and cardiovascular diseases. A plethora of ion channels and transporters are present in the mitochondrial inner and outer membranes which work in concert to preserve the ionic equilibrium of a cell for the maintenance of cell integrity, in physiological as well as pathophysiological conditions. For, e.g., mitochondrial cation channels KATP and BKCa play a significant role in cardioprotection from ischemia-reperfusion injury. In addition to the cation channels, mitochondrial anion channels are equally essential, as they aid in maintaining electro-neutrality by regulating the cell volume and pH. This chapter focusses on the information on molecular identity, structure, function, and physiological relevance of mitochondrial chloride channels such as voltage dependent anion channels (VDACs), uncharacterized mitochondrial inner membrane anion channels (IMACs), chloride intracellular channels (CLIC) and the aspects of forthcoming chloride channels.
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Affiliation(s)
- Devasena Ponnalagu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, 245 N. 15th Street, Room 8154, Mail Stop 488, Philadelphia, PA, 19102-1192, USA
| | - Harpreet Singh
- Department of Pharmacology and Physiology, Drexel University College of Medicine, 245 N. 15th Street, Room 8154, Mail Stop 488, Philadelphia, PA, 19102-1192, USA.
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Tavasoli M, Al-Momany A, Wang X, Li L, Edwards JC, Ballermann BJ. Both CLIC4 and CLIC5A activate ERM proteins in glomerular endothelium. Am J Physiol Renal Physiol 2016; 311:F945-F957. [PMID: 27582103 DOI: 10.1152/ajprenal.00353.2016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 08/25/2016] [Indexed: 01/17/2023] Open
Abstract
The chloride intracellular channel (CLIC) 5A is expressed at very high levels in renal glomeruli, in both endothelial cells (EC) and podocytes. CLIC5A stimulates Rac1- and phosphatidylinositol (4,5)-bisphosphate-dependent ERM (ezrin, radixin, moesin) activation. ERM proteins, in turn, function in lumen formation and in the development of actin-based cellular projections. In mice lacking CLIC5A, ERM phosphorylation is profoundly reduced in podocytes, but preserved in glomerular EC. Since glomerular EC also express CLIC4, we reasoned that, if CLIC4 activates ERM proteins like CLIC5A, then CLIC4 could compensate for the CLIC5A loss in glomerular EC. In glomeruli of CLIC5-deficient mice, CLIC4 expression was upregulated and colocalized with moesin and ezrin in glomerular EC, but not in podocytes. In cultured glomerular EC, CLIC4 silencing reduced ERM phosphorylation and cytoskeletal association, and expression of exogenous CLIC4 or CLIC5A rescued ERM de-phosphorylation due to CLIC4 silencing. In mice lacking either CLIC4 or CLIC5, ERM phosphorylation was retained in glomerular EC, but, in mice lacking both CLIC4 and CLIC5, glomerular EC ERM phosphorylation was profoundly reduced. Although glomerular EC fenestrae developed normally in dual CLIC4/CLIC5-deficient mice, the density of fenestrae declined substantially by 8 mo of age, along with the deposition of subendothelial electron-lucent material. The dual CLIC4/CLIC5-deficient mice developed spontaneous proteinuria, glomerular cell proliferation, and matrix deposition. Thus CLIC4 stimulates ERM activation and can compensate for CLIC5A in glomerular EC. The findings indicate that CLIC4/CLIC5A-mediated ERM activation is required for maintenance of the glomerular capillary architecture.
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Affiliation(s)
- Mahtab Tavasoli
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Abass Al-Momany
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada; and
| | - Xin Wang
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Laiji Li
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - John C Edwards
- Department of Internal Medicine, St. Louis University, St. Louis, Missouri
| | - Barbara J Ballermann
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada; .,Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada; and
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Tattersall IW, Du J, Cong Z, Cho BS, Klein AM, Dieck CL, Chaudhri RA, Cuervo H, Herts JH, Kitajewski J. In vitro modeling of endothelial interaction with macrophages and pericytes demonstrates Notch signaling function in the vascular microenvironment. Angiogenesis 2016; 19:201-15. [PMID: 26965898 DOI: 10.1007/s10456-016-9501-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 02/17/2016] [Indexed: 01/10/2023]
Abstract
Angiogenesis is regulated by complex interactions between endothelial cells and support cells of the vascular microenvironment, such as tissue myeloid cells and vascular mural cells. Multicellular interactions during angiogenesis are difficult to study in animals and challenging in a reductive setting. We incorporated stromal cells into an established bead-based capillary sprouting assay to develop assays that faithfully reproduce major steps of vessel sprouting and maturation. We observed that macrophages enhance angiogenesis, increasing the number and length of endothelial sprouts, a property we have dubbed "angiotrophism." We found that polarizing macrophages toward a pro-inflammatory profile further increased their angiotrophic stimulation of vessel sprouting, and this increase was dependent on macrophage Notch signaling. To study endothelial/pericyte interactions, we added vascular pericytes directly to the bead-bound endothelial monolayer. These pericytes formed close associations with the endothelial sprouts, causing increased sprout number and vessel caliber. We found that Jagged1 expression and Notch signaling are essential for the growth of both endothelial cells and pericytes and may function in their interaction. We observed that combining endothelial cells with both macrophages and pericytes in the same sprouting assay has multiplicative effects on sprouting. These results significantly improve bead-capillary sprouting assays and provide an enhanced method for modeling interactions between the endothelium and the vascular microenvironment. Achieving this in a reductive in vitro setting represents a significant step toward a better understanding of the cellular elements that contribute to the formation of mature vasculature.
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Affiliation(s)
| | - Jing Du
- Obstetrics/Gynecology, Columbia University, New York, NY, USA
- Pathology and Cell Biology, Columbia University, New York, NY, USA
| | | | - Bennet S Cho
- Obstetrics/Gynecology, Columbia University, New York, NY, USA
| | - Alyssa M Klein
- Obstetrics/Gynecology, Columbia University, New York, NY, USA
| | - Chelsea L Dieck
- Obstetrics/Gynecology, Columbia University, New York, NY, USA
| | | | - Henar Cuervo
- Obstetrics/Gynecology, Columbia University, New York, NY, USA
| | - James H Herts
- Obstetrics/Gynecology, Columbia University, New York, NY, USA
| | - Jan Kitajewski
- Obstetrics/Gynecology, Columbia University, New York, NY, USA.
- Pathology and Cell Biology, Columbia University, New York, NY, USA.
- Physiology and Biophysics, University of Illinois Chicago, College of Medicine, Chicago, IL, USA.
- Columbia University Medical Center, 1130 St. Nicholas Avenue, ICRC 926, New York, NY, 10032, USA.
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Martial S. Involvement of ion channels and transporters in carcinoma angiogenesis and metastasis. Am J Physiol Cell Physiol 2016; 310:C710-27. [PMID: 26791487 DOI: 10.1152/ajpcell.00218.2015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Angiogenesis is a finely tuned process, which is the result of the equilibrium between pro- and antiangiogenic factors. In solid tumor angiogenesis, the balance is highly in favor of the production of new, but poorly functional blood vessels, initially intended to provide growing tumors with nutrients and oxygen. Among the numerous proteins involved in tumor development, several types of ion channels are overexpressed in tumor cells, as well as in stromal and endothelial cells. Ion channels thus actively participate in the different hallmarks of cancer, especially in tumor angiogenesis and metastasis. Indeed, from their strategic localization in the plasma membrane, ion channels are key operators of cell signaling, as they sense and respond to environmental changes. This review aims to decipher how ion channels of different families are intricately involved in the fundamental angiogenesis and metastasis hallmarks, which lead from a nascent tumor to systemic dissemination. An overview of the possible use of ion channels as therapeutic targets will also be given, showing that ion channel inhibitors or specific antibodies may provide effective tools, in the near future, in the treatment of carcinomas.
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Affiliation(s)
- Sonia Martial
- Institut de Recherche sur le Cancer et le Vieillissement, CNRS UMR 7284, Inserm U1081, Université Nice-Sophia Antipolis, Nice, France
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35
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Ponnalagu D, Gururaja Rao S, Farber J, Xin W, Hussain AT, Shah K, Tanda S, Berryman M, Edwards JC, Singh H. Molecular identity of cardiac mitochondrial chloride intracellular channel proteins. Mitochondrion 2016; 27:6-14. [PMID: 26777142 DOI: 10.1016/j.mito.2016.01.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 12/08/2015] [Accepted: 01/07/2016] [Indexed: 01/08/2023]
Abstract
Emerging evidences demonstrate significance of chloride channels in cardiac function and cardioprotection from ischemia-reperfusion (IR) injury. Unlike mitochondrial potassium channels sensitive to calcium (BKCa) and ATP (KATP), molecular identity of majority of cardiac mitochondrial chloride channels located at the inner membrane is not known. In this study, we report the presence of unique dimorphic chloride intracellular channel (CLIC) proteins namely CLIC1, CLIC4 and CLIC5 as abundant CLICs in the rodent heart. Further, CLIC4, CLIC5, and an ortholog present in Drosophila (DmCLIC) localize to adult cardiac mitochondria. We found that CLIC4 is enriched in the outer mitochondrial membrane, whereas CLIC5 is present in the inner mitochondrial membrane. Also, CLIC5 plays a direct role in regulating mitochondrial reactive oxygen species (ROS) generation. Our study highlights that CLIC5 is localized to the cardiac mitochondria and directly modulates mitochondrial function.
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Affiliation(s)
- Devasena Ponnalagu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19102, United States
| | - Shubha Gururaja Rao
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19102, United States
| | - Jason Farber
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19102, United States
| | - Wenyu Xin
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19102, United States
| | - Ahmed Tafsirul Hussain
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19102, United States
| | - Kajol Shah
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19102, United States
| | - Soichi Tanda
- Department of Biological Sciences, Ohio University, Athens, OH 45701, United States
| | - Mark Berryman
- Department of Biomedical Sciences, Ohio University, Athens, OH 45701, United States
| | - John C Edwards
- Division of Nephrology, St. Louis University, St. Louis, MO 63110, United States
| | - Harpreet Singh
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19102, United States.
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36
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Lucitti JL, Tarte NJ, Faber JE. Chloride intracellular channel 4 is required for maturation of the cerebral collateral circulation. Am J Physiol Heart Circ Physiol 2015; 309:H1141-50. [PMID: 26276819 DOI: 10.1152/ajpheart.00451.2015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 08/13/2015] [Indexed: 12/20/2022]
Abstract
The number and diameter of native collaterals in tissues of healthy mice vary widely, resulting in large differences in tissue injury in occlusive diseases. Recent studies suggest similar variation may exist in humans. Collateral variation in mice is determined by genetic background-dependent differences in embryonic collateral formation, by variation in maturation of the nascent collaterals, and by environmental factors such as aging that cause collateral rarefaction in the adult. Recently, formation of the collateral circulation in the brain was found to involve a unique VEGF-A-dependent "arteriolar" angiogenic sprouting-like mechanism. Elsewhere, chloride intracellular protein 4 (CLIC4) was implicated but not investigated directly, prompting the present study. Deletion of Clic4 had no effect on embryonic collaterogenesis. However, during collateral maturation from embryonic day 18.5 to postnatal day 7, reduced mural cell investment was observed and excessive pruning of collaterals occurred. Growth in collateral diameter was reduced. This resulted in 50% fewer collaterals of smaller diameter in the adult and thus larger infarct volume after middle cerebral artery occlusion. During collateral maturation, CLIC4 deficiency resulted in reduced expression of Vegfr2, Vegfr1, Vegfc, and mural cell markers, but not notch-pathway genes. Overexpression of VEGF-A in Clic4(-/-) mice had no effect on collaterogenesis, but rescued the above defects in collateral maturation by preventing mural cell loss and collateral pruning, thus restoring collateral number and diameter and reducing stroke severity in the adult. CLIC4 is not required for collaterogenesis but is essential for perinatal maturation of nascent collaterals through a mechanism that supports VEGF signaling.
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Affiliation(s)
- Jennifer L Lucitti
- Department of Cell Biology and Physiology and the McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Natalie J Tarte
- Department of Cell Biology and Physiology and the McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - James E Faber
- Department of Cell Biology and Physiology and the McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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37
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Calderón-González KG, Valero Rustarazo ML, Labra-Barrios ML, Bazán-Méndez CI, Tavera-Tapia A, Herrera-Aguirre ME, Sánchez del Pino MM, Gallegos-Pérez JL, González-Márquez H, Hernández-Hernández JM, León-Ávila G, Rodríguez-Cuevas S, Guisa-Hohenstein F, Luna-Arias JP. Determination of the protein expression profiles of breast cancer cell lines by quantitative proteomics using iTRAQ labelling and tandem mass spectrometry. J Proteomics 2015; 124:50-78. [PMID: 25918110 DOI: 10.1016/j.jprot.2015.04.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/11/2015] [Accepted: 04/13/2015] [Indexed: 02/06/2023]
Abstract
UNLABELLED Breast cancer is the principal cancer in women worldwide. Although there are serum tumor markers such as CEA and HER2, they are detected in advanced stages of the disease and used as progression and recurrence markers. Therefore, there is a necessity for the identification of new markers that might lead to an early detection and also provide evidence of an effective treatment. The aim of this work was to determine the differential protein expression profiles of four breast cancer cell lines in comparison to a normal control cell line by iTRAQ labelling and tandem mass spectrometry, in order to identify putative biomarkers of the disease. We identified 1,020 iTRAQ-labelled polypeptides with at least one peptide identified with more than 95% in confidence. Overexpressed polypeptides in all cancer cell lines were 78, whilst the subexpressed were 128. We categorised them with PANTHER program into biological processes, being the metabolic pathways the most affected. We detected six groups of proteins with the STRING program involved in DNA topology, glycolysis, translation initiation, splicing, pentose pathway, and proteasome degradation. The main subexpressed protein network included mitochondrial proteins involved in oxidative phosphorylation. We propose BAG6, DDX39, ANXA8 and COX4 as putative biomarkers in breast cancer. BIOLOGICAL SIGNIFICANCE We report a set of differentially expressed proteins in the MCF7 and T47D (Luminal A), MDA-MB-231 (Claudin low) and SK-BR-3 (HER2(+)) breast cancer cell lines that have not been previously reported in breast cancer disease. From these proteins, we propose BAG6, DDX39, ANXA8 and COX4 as putative biomarkers in breast cancer. On the other hand, we propose sets of unique polypeptides in each breast cancer cell line that can be useful in the classification of different subtypes of breast cancer.
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Affiliation(s)
- Karla Grisel Calderón-González
- Doctorado en Ciencias Biológicas, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco No. 186, Col. Vicentina, Iztapalapa, C.P. 09340, México, D. F., México.
| | - Ma Luz Valero Rustarazo
- Unidad de Proteómica, Centro de Investigación Príncipe Felipe, C/Rambla del Saler 16, 46012 Valencia, España.
| | - Maria Luisa Labra-Barrios
- Departmento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, Gustavo A. Madero, C.P. 07360, México, D. F., México.
| | - César Isaac Bazán-Méndez
- Departmento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, Gustavo A. Madero, C.P. 07360, México, D. F., México.
| | - Alejandra Tavera-Tapia
- Departmento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, Gustavo A. Madero, C.P. 07360, México, D. F., México.
| | - Maria Esther Herrera-Aguirre
- Departmento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, Gustavo A. Madero, C.P. 07360, México, D. F., México.
| | - Manuel M Sánchez del Pino
- Unidad de Proteómica, Centro de Investigación Príncipe Felipe, C/Rambla del Saler 16, 46012 Valencia, España.
| | | | - Humberto González-Márquez
- Doctorado en Ciencias Biológicas, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco No. 186, Col. Vicentina, Iztapalapa, C.P. 09340, México, D. F., México.
| | - Jose Manuel Hernández-Hernández
- Departmento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, Gustavo A. Madero, C.P. 07360, México, D. F., México.
| | - Gloria León-Ávila
- Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Col. Santo Tomás, Miguel Hidalgo, C.P. 11340, México, D. F., México.
| | - Sergio Rodríguez-Cuevas
- Instituto de Enfermedades de la Mama, Fundación del Cáncer de Mama (FUCAM A.C.), Av. Bordo No. 100, Col. Viejo Ejido de Santa Ursula Coapa, Coyoacán, C.P. 04980, México, D. F., México.
| | - Fernando Guisa-Hohenstein
- Instituto de Enfermedades de la Mama, Fundación del Cáncer de Mama (FUCAM A.C.), Av. Bordo No. 100, Col. Viejo Ejido de Santa Ursula Coapa, Coyoacán, C.P. 04980, México, D. F., México.
| | - Juan Pedro Luna-Arias
- Departmento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, Gustavo A. Madero, C.P. 07360, México, D. F., México.
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38
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Shaye DD, Greenwald I. The disease-associated formin INF2/EXC-6 organizes lumen and cell outgrowth during tubulogenesis by regulating F-actin and microtubule cytoskeletons. Dev Cell 2015; 32:743-55. [PMID: 25771894 DOI: 10.1016/j.devcel.2015.01.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 12/02/2014] [Accepted: 01/13/2015] [Indexed: 10/23/2022]
Abstract
We investigate how outgrowth at the basolateral cell membrane is coordinated with apical lumen formation in the development of a biological tube by characterizing exc-6, a gene required for C. elegans excretory cell (EC) tubulogenesis. We show that EXC-6 is orthologous to the human formin INF2, which polymerizes filamentous actin (F-actin) and binds microtubules (MTs) in vitro. Dominant INF2 mutations cause focal segmental glomerulosclerosis (FSGS), a kidney disease, and FSGS+Charcot-Marie-Tooth neuropathy. We show that activated INF2 can substitute for EXC-6 in C. elegans and that disease-associated mutations cause constitutive activity. Using genetic analysis and live imaging, we show that exc-6 regulates MT and F-actin accumulation at EC tips and dynamics of basolateral-localized MTs, indicating that EXC-6 organizes F-actin and MT cytoskeletons during tubulogenesis. The pathology associated with INF2 mutations is believed to reflect misregulation of F-actin, but our results suggest alternative or additional mechanisms via effects on MT dynamics.
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Affiliation(s)
- Daniel D Shaye
- Howard Hughes Medical Institute, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA.
| | - Iva Greenwald
- Howard Hughes Medical Institute, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA; Department of Biochemistry and Molecular Biophysics, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA; Department of Genetics and Development, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA.
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39
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Li PT, Ke ES, Chiang PC, Tsai T. ALA- or Ce6-PDT induced phenotypic change and suppressed migration in surviving cancer cells. J Dent Sci 2015. [DOI: 10.1016/j.jds.2013.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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40
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Patel D, Ythier D, Brozzi F, Eizirik DL, Thorens B. Clic4, a novel protein that sensitizes β-cells to apoptosis. Mol Metab 2015; 4:253-64. [PMID: 25830089 PMCID: PMC4354924 DOI: 10.1016/j.molmet.2015.01.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 01/06/2015] [Accepted: 01/09/2015] [Indexed: 01/09/2023] Open
Abstract
Objectives Chloride intracellular channel protein 4 (Clic4) is a ubiquitously expressed protein involved in multiple cellular processes including cell-cycle control, cell differentiation, and apoptosis. Here, we investigated the role of Clic4 in pancreatic β-cell apoptosis. Methods We used βTC-tet cells and islets from β-cell specific Clic4 knockout mice (βClic4KO) and assessed cytokine-induced apoptosis, Bcl2 family protein expression and stability, and identified Clic4-interacting proteins by co-immunoprecipitation and mass spectrometry analysis. Results We show that cytokines increased Clic4 expression in βTC-tet cells and in mouse islets and siRNA-mediated silencing of Clic4 expression in βTC-tet cells or its genetic inactivation in islets β-cells, reduced cytokine-induced apoptosis. This was associated with increased expression of Bcl-2 and increased expression and phosphorylation of Bad. Measurement of Bcl-2 and Bad half-lives in βTC-tet cells showed that Clic4 silencing increased the stability of these proteins. In primary islets β-cells, absence of Clic4 expression increased Bcl-2 and Bcl-xL expression as well as expression and phosphorylation of Bad. Mass-spectrometry analysis of proteins co-immunoprecipitated with Clic4 from βTC-tet cells showed no association of Clic4 with Bcl-2 family proteins. However, Clic4 co-purified with proteins from the proteasome suggesting a possible role for Clic4 in regulating protein degradation. Conclusions Collectively, our data show that Clic4 is a cytokine-induced gene that sensitizes β-cells to apoptosis by reducing the steady state levels of Bcl-2, Bad and phosphorylated Bad.
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Affiliation(s)
- Dhaval Patel
- Center for Integrative Genomics, University of Lausanne, Genopode Building, CH-1015 Lausanne, Switzerland
| | - Damien Ythier
- Center for Integrative Genomics, University of Lausanne, Genopode Building, CH-1015 Lausanne, Switzerland
| | - Flora Brozzi
- ULB Center for Diabetes Research, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Decio L Eizirik
- ULB Center for Diabetes Research, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Bernard Thorens
- Center for Integrative Genomics, University of Lausanne, Genopode Building, CH-1015 Lausanne, Switzerland
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Abstract
Chronic progressive renal fibrosis leads to end-stage renal failure many patients with chronic kidney disease (CKD). Loss of the rich peritubular capillary network is a prominent feature, and seems independent of the specific underlying disease. The mechanisms that contribute to peritubular capillary regression include the loss of glomerular perfusion, as flow-dependent shear forces are required to provide the survival signal for endothelial cells. Also, reduced endothelial cell survival signals from sclerotic glomeruli and atrophic or injured tubule epithelial cells contribute to peritubular capillary regression. In response to direct tubular epithelial cell injury, and the inflammatory reaction that ensues, capillary pericytes dissociate from their blood vessels, also reducing endothelial cell survival. In addition, direct inflammatory injury of capillary endothelial cells, for instance in chronic allograft nephropathy, also contributes to capillary dropout. Chronic tissue hypoxia, which ensues from the rarefaction of the peritubular capillary network, can generate both an angiogenic and a fibrogenic response. However, in CKD, the balance is strongly tipped toward fibrogenesis. Understanding the underlying mechanisms for failed angiogenesis in CKD and harnessing endothelial-specific survival and pro-angiogenic mechanisms for therapy should be our goal if we are to reduce the disease burden from CKD.
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Affiliation(s)
| | - Marya Obeidat
- Department of Medicine, University of Alberta , Edmonton, Alberta, Canada
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42
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Heroux MS, Chesnik MA, Halligan BD, Al-Gizawiy M, Connelly JM, Mueller WM, Rand SD, Cochran EJ, LaViolette PS, Malkin MG, Schmainda KM, Mirza SP. Comprehensive characterization of glioblastoma tumor tissues for biomarker identification using mass spectrometry-based label-free quantitative proteomics. Physiol Genomics 2014; 46:467-81. [PMID: 24803679 PMCID: PMC4587597 DOI: 10.1152/physiolgenomics.00034.2014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 05/05/2014] [Indexed: 01/21/2023] Open
Abstract
Cancer is a complex disease; glioblastoma (GBM) is no exception. Short survival, poor prognosis, and very limited treatment options make it imperative to unravel the disease pathophysiology. The critically important identification of proteins that mediate various cellular events during disease is made possible with advancements in mass spectrometry (MS)-based proteomics. The objective of our study is to identify and characterize proteins that are differentially expressed in GBM to better understand their interactions and functions that lead to the disease condition. Further identification of upstream regulators will provide new potential therapeutic targets. We analyzed GBM tumors by SDS-PAGE fractionation with internal DNA markers followed by liquid chromatography-tandem mass spectrometry (MS). Brain tissue specimens obtained for clinical purposes during epilepsy surgeries were used as controls, and the quantification of MS data was performed by label-free spectral counting. The differentially expressed proteins were further characterized by Ingenuity Pathway Analysis (IPA) to identify protein interactions, functions, and upstream regulators. Our study identified several important proteins that are involved in GBM progression. The IPA revealed glioma activation with z score 2.236 during unbiased core analysis. Upstream regulators STAT3 and SP1 were activated and CTNNα was inhibited. We verified overexpression of several proteins by immunoblot to complement the MS data. This work represents an important step towards the identification of GBM biomarkers, which could open avenues to identify therapeutic targets for better treatment of GBM patients. The workflow developed represents a powerful and efficient method to identify biomarkers in GBM.
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Affiliation(s)
- Maxime S Heroux
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Marla A Chesnik
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Brian D Halligan
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Mona Al-Gizawiy
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | | | - Wade M Mueller
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Scott D Rand
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Elizabeth J Cochran
- Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Peter S LaViolette
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Mark G Malkin
- Department of Neurology, Virginia Commonwealth University, Richmond, Virginia
| | - Kathleen M Schmainda
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Shama P Mirza
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin;
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Murtomaki A, Uh MK, Kitajewski C, Zhao J, Nagasaki T, Shawber CJ, Kitajewski J. Notch signaling functions in lymphatic valve formation. Development 2014; 141:2446-51. [PMID: 24917500 PMCID: PMC4050693 DOI: 10.1242/dev.101188] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 04/24/2014] [Indexed: 01/08/2023]
Abstract
Collecting lymphatic ducts contain intraluminal valves that prevent backflow. In mice, lymphatic valve morphogenesis begins at embryonic day 15.5 (E15.5). In the mesentery, Prox1 expression is high in valve-forming lymphatic endothelial cells, whereas cells of the lymphatic ducts express lower levels of Prox1. Integrin α9, fibronectin EIIIA, Foxc2, calcineurin and the gap junction protein Cx37 are required for lymphatic valve formation. We show that Notch1 is expressed throughout the developing mesenteric lymphatic vessels at E16.5, and that, by E18.5, Notch1 expression becomes highly enriched in the lymphatic valve endothelial cells. Using a Notch reporter mouse, Notch activity was detected in lymphatic valves at E17.5 and E18.5. The role of Notch in lymphatic valve morphogenesis was studied using a conditional lymphatic endothelial cell driver either to delete Notch1 or to express a dominant-negative Mastermind-like (DNMAML) transgene. Deletion of Notch1 led to an expansion of Prox1(high) cells, a defect in Prox1(high) cell reorientation and a decrease in integrin α9 expression at sites of valve formation. Expression of DNMAML, which blocks all Notch signaling, resulted in a more severe phenotype characterized by a decrease in valves, failure of Prox1(high) cells to cluster, and rounding of the nuclei and decreased fibronectin-EIIIA expression in the Prox1(high) cells found at valve sites. In human dermal lymphatic endothelial cells, activation of Notch1 or Notch4 induced integrin α9, fibronectin EIIIA and Cx37 expression. We conclude that Notch signaling is required for proper lymphatic valve formation and regulates integrin α9 and fibronectin EIIIA expression during valve morphogenesis.
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Affiliation(s)
- Aino Murtomaki
- Department of OB/GYN, Columbia University Medical Center, New York, NY 10032, USA Division of Genetics, Department of Biosciences, Viikki Biocenter, University of Helsinki, POB 56, Helsinki FIN-00014, Finland
| | - Minji K Uh
- Department of OB/GYN, Columbia University Medical Center, New York, NY 10032, USA Department of Pharmacology, Columbia University Medical Center, New York, NY 10032, USA
| | - Chris Kitajewski
- Department of OB/GYN, Columbia University Medical Center, New York, NY 10032, USA
| | - Jin Zhao
- Department of Ophthalmology, Columbia University Medical Center, New York, NY 10032, USA
| | - Takayuki Nagasaki
- Department of Ophthalmology, Columbia University Medical Center, New York, NY 10032, USA
| | - Carrie J Shawber
- Department of OB/GYN, Columbia University Medical Center, New York, NY 10032, USA
| | - Jan Kitajewski
- Department of OB/GYN, Columbia University Medical Center, New York, NY 10032, USA Department of Pathology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
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Ma D, Cui L, Gao J, Yan W, Liu Y, Xu S, Wu B. Proteomic analysis of mesenchymal stem cells from normal and deep carious dental pulp. PLoS One 2014; 9:e97026. [PMID: 24809979 PMCID: PMC4014579 DOI: 10.1371/journal.pone.0097026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 04/14/2014] [Indexed: 12/19/2022] Open
Abstract
Dental pulp stem cells (DPSCs), precursor cells of odontoblasts, are ideal seed cells for tooth tissue engineering and regeneration. Our previous study has demonstrated that stem cells exist in dental pulp with deep caries and are called carious dental pulp stem cells (CDPSCs). The results indicated that CDPSCs had a higher proliferative and stronger osteogenic differentiation potential than DPSCs. However, the molecular mechanisms responsible for the biological differences between DPSCs and CDPSCs are poorly understood. The aim of this study was to define the molecular features of DPSCs and CDPSCs by comparing the proteomic profiles using two-dimensional fluorescence difference gel electrophoresis (2-D DIGE) in combination with matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Our results revealed that there were 18 protein spots differentially expressed between DPSCs and CDPSCs in a narrow pH range of 4 to 7. These differently expressed proteins are mostly involved in the regulation of cell proliferation, differentiation, cell cytoskeleton and motility. In addition, our results suggested that CDPSCs had a higher expression of antioxidative proteins that might protect CDPSCs from oxidative stress. This study explores some potential proteins responsible for the biological differences between DPSCs and CDPSCs and expands our understanding on the molecular mechanisms of mineralization of DPSCs in the formation of the dentin-pulp complex.
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Affiliation(s)
- Dandan Ma
- Department of Stomatology, Nanfang Hospital, Guangzhou, P.R. China
- College of Stomatology, Southern Medical University, Guangzhou, P.R. China
| | - Li Cui
- Department of Stomatology, Nanfang Hospital, Guangzhou, P.R. China
- College of Stomatology, Southern Medical University, Guangzhou, P.R. China
| | - Jie Gao
- Department of Stomatology, Nanfang Hospital, Guangzhou, P.R. China
- College of Stomatology, Southern Medical University, Guangzhou, P.R. China
| | - Wenjuan Yan
- Department of Stomatology, Nanfang Hospital, Guangzhou, P.R. China
- College of Stomatology, Southern Medical University, Guangzhou, P.R. China
| | - Ying Liu
- Department of Stomatology, Nanfang Hospital, Guangzhou, P.R. China
- College of Stomatology, Southern Medical University, Guangzhou, P.R. China
| | - Shuaimei Xu
- Department of Stomatology, Nanfang Hospital, Guangzhou, P.R. China
- College of Stomatology, Southern Medical University, Guangzhou, P.R. China
| | - Buling Wu
- Department of Stomatology, Nanfang Hospital, Guangzhou, P.R. China
- College of Stomatology, Southern Medical University, Guangzhou, P.R. China
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45
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Edwards JC, Bruno J, Key P, Cheng YW. Absence of chloride intracellular channel 4 (CLIC4) predisposes to acute kidney injury but has minimal impact on recovery. BMC Nephrol 2014; 15:54. [PMID: 24708746 PMCID: PMC4234247 DOI: 10.1186/1471-2369-15-54] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 03/28/2014] [Indexed: 12/02/2022] Open
Abstract
Background CLIC4, a member of the CLIC family of proteins, was recently demonstrated to translocate to the nucleus in differentiating keratinocytes where it potentiates TGFβ-driven gene regulation. Since TGFβ signaling is known to play important roles in the fibrotic response to acute kidney injury, and since CLIC4 is abundantly expressed in kidney, we hypothesized that CLIC4 may play a role in the response to acute kidney injury. Methods Previously described Clic4 null mice were analyzed for the effect of absence of CLIC4 on growth, development and response to kidney injury. Kidney size, glomerular counts and density of peritubular capillaries of matched WT and Clic4 null mice were determined. Cohorts of WT and Clic4 null mice were subjected to the folic acid model of acute kidney injury. Extent of acute injury and long term functional recovery were assessed by plasma blood urea nitrogen (BUN); long term fibrosis/scarring was determined by histochemical assessment of kidney sections and by residual renal mass. Activation of the TGFβ signaling pathway was assessed by semi-quantitative western blots of phosphorylated SMADs 2 and 3. Results CLIC4 is abundantly expressed in the apical pole of renal proximal tubule cells, and in endothelial cells of glomerular and peritubular capillaries. CLIC4 null mice are small, have smaller kidneys with fewer glomeruli and less dense peritubular capillary networks, and have increased proteinuria. The Clic4 null mice show increased susceptibility to folic acid-induced acute kidney injury but no difference in recovery from acute injury, no nuclear redistribution of CLIC4 following injury, and no significant difference in activation of the TGFβ-signaling pathway as reflected in the level of phosphorylation of SMADs 2 and 3. Conclusions Absence of CLIC4 results in morphologic changes consistent with its known role in angiogenesis. These changes may be at least partially responsible for the increased susceptibility to acute kidney injury. However, the absence of CLIC4 has no significant impact on the extent of functional recovery or fibrosis following acute injury, indicating that CLIC4 does not play a major non-redundant role in the TGFβ signaling involved in response to acute kidney injury.
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Affiliation(s)
- John C Edwards
- Kidney Center and the Department of Internal Medicine, University of North Carolina, Chapel Hill NC, USA.
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46
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Wojciak-Stothard B, Abdul-Salam VB, Lao KH, Tsang H, Irwin DC, Lisk C, Loomis Z, Stenmark KR, Edwards JC, Yuspa SH, Howard LS, Edwards RJ, Rhodes CJ, Gibbs JSR, Wharton J, Zhao L, Wilkins MR. Aberrant chloride intracellular channel 4 expression contributes to endothelial dysfunction in pulmonary arterial hypertension. Circulation 2014; 129:1770-80. [PMID: 24503951 DOI: 10.1161/circulationaha.113.006797] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Chloride intracellular channel 4 (CLIC4) is highly expressed in the endothelium of remodeled pulmonary vessels and plexiform lesions of patients with pulmonary arterial hypertension. CLIC4 regulates vasculogenesis through endothelial tube formation. Aberrant CLIC4 expression may contribute to the vascular pathology of pulmonary arterial hypertension. METHODS AND RESULTS CLIC4 protein expression was increased in plasma and blood-derived endothelial cells from patients with idiopathic pulmonary arterial hypertension and in the pulmonary vascular endothelium of 3 rat models of pulmonary hypertension. CLIC4 gene deletion markedly attenuated the development of chronic hypoxia-induced pulmonary hypertension in mice. Adenoviral overexpression of CLIC4 in cultured human pulmonary artery endothelial cells compromised pulmonary endothelial barrier function and enhanced their survival and angiogenic capacity, whereas CLIC4 shRNA had an inhibitory effect. Similarly, inhibition of CLIC4 expression in blood-derived endothelial cells from patients with idiopathic pulmonary arterial hypertension attenuated the abnormal angiogenic behavior that characterizes these cells. The mechanism of CLIC4 effects involves p65-mediated activation of nuclear factor-κB, followed by stabilization of hypoxia-inducible factor-1α and increased downstream production of vascular endothelial growth factor and endothelin-1. CONCLUSION Increased CLIC4 expression is an early manifestation and mediator of endothelial dysfunction in pulmonary hypertension.
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Affiliation(s)
- Beata Wojciak-Stothard
- Centre for Pharmacology and Therapeutics, Department of Medicine, Imperial College London, London, UK (B.W.-S., V.B.A.-S., K.H.L., H.T., R.J.E., C.J.R., J.W., L.Z., M.R.W.); Cardiovascular Pulmonary Research Group, University of Colorado Denver Health Sciences Center, Aurora (D.C.I., C.L., Z.L., K.R.S.); Division of Nephrology, Department of Internal Medicine, St. Louis University, St. Louis MO (J.C.E.); Laboratory of Cancer Biology & Genetics, Centre for Cancer Research, Bethesda, MD (S.H.Y.); and National Pulmonary Hypertension Service and National Heart & Lung Institute, Imperial College Healthcare NHS Trust, London, UK (L.S.H., J.S.R.G.)
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Vink JY, Charles-Horvath PC, Kitajewski JK, Reeves CV. Anthrax toxin receptor 2 promotes human uterine smooth muscle cell viability, migration and contractility. Am J Obstet Gynecol 2014; 210:154.e1-8. [PMID: 24060446 DOI: 10.1016/j.ajog.2013.09.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 08/21/2013] [Accepted: 09/19/2013] [Indexed: 01/26/2023]
Abstract
OBJECTIVE Previously we demonstrated anthrax toxin receptor 2 knockout (Antxr2(-/-)) mice are fertile but fail to deliver their pups at term. This parturition defect is associated with overaccumulation of extracellular matrix proteins and decreased myometrial cell content in the uterus. Myometrial cell loss in Antxr2(-/-) uterine tissue prompted us to evaluate if ANTXR2 is essential for human uterine smooth muscle cell viability and function. STUDY DESIGN We subjected human uterine smooth muscle cell to lentiviral-mediated knock down or retroviral-mediated overexpression of ANTXR2. Flow cytometry confirmed lentiviral-mediated knock down or retroviral-mediated overexpression in cell lines vs control. Cell behavior and function in control, lentiviral-mediated knock down and retroviral-mediated overexpression cells were evaluated for apoptosis via TUNEL assay, migration via Boyden chamber assay and with oxytocin-mediated collagen contraction assays. Matrix metalloproteinase activity was evaluated using gelatin zymography. Cell lines and samples were run in duplicate. Student t test was used for statistical analysis. RESULTS ANTXR2 is expressed by human uterine smooth muscle cell. Human uterine smooth muscle cell-lentiviral-mediated knock down cells exhibited increased apoptosis (P < .05) and decreased migration (P < .05), although human uterine smooth muscle cell-retroviral-mediated overexpression cells exhibited no change in apoptosis (P = .91) and increased migration (P = .05) vs control. Human uterine smooth muscle cell-lentiviral-mediated knock down cells contracted significantly less than control, although human uterine smooth muscle cell-retroviral-mediated overexpression cells showed no difference in contractility vs control. Matrix metalloproteinase activity 2 activity appeared slightly decreased in human uterine smooth muscle cell-lentiviral-mediated knock down cells and increased in human uterine smooth muscle cell-retroviral-mediated overexpression cells vs control. CONCLUSION ANTXR2 is expressed by human uterine smooth muscle cell and appears important for normal human uterine smooth muscle cell viability, migration and contractility. Further studies are needed to delineate if ANTXR2 is important for normal and abnormal labor patterns.
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Tung JJ, Tattersall IW, Kitajewski J. Tips, stalks, tubes: notch-mediated cell fate determination and mechanisms of tubulogenesis during angiogenesis. Cold Spring Harb Perspect Med 2013; 2:a006601. [PMID: 22355796 DOI: 10.1101/cshperspect.a006601] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Angiogenesis is the process of developing vascular sprouts from existing blood vessels. Luminal endothelial cells convert into "tip" cells that contribute to the development of a multicellular stalk, which then undergoes lumen formation. In this review, we consider a variety of cellular and molecular pathways that mediate these transitions. We focus first on Notch signaling in cell fate determination as a mechanism to define tip and stalk cells. We next discuss the current models of lumen formation and describe new players in this process, such as chloride intracellular channel proteins. Finally, we consider the possible medical therapeutic benefits of understanding these processes and acknowledge potential obstacles in drug development.
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Affiliation(s)
- Jennifer J Tung
- Department of Obstetrics/Gynecology and Pathology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, New York 10032, USA
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Murtomaki A, Uh MK, Choi YK, Kitajewski C, Borisenko V, Kitajewski J, Shawber CJ. Notch1 functions as a negative regulator of lymphatic endothelial cell differentiation in the venous endothelium. Development 2013; 140:2365-76. [PMID: 23615281 DOI: 10.1242/dev.083865] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In development, lymphatic endothelial cells originate within veins and differentiate via a process requiring Prox1. Notch signaling regulates cell-fate decisions, and expression studies suggested that Jag1/Notch1 signaling functions in veins during lymphatic endothelial specification. Using an inducible lymphatic endothelial Prox1CreER(T2) driver, Notch signaling was suppressed by deleting Notch1 or expressing dominant-negative Mastermind-like in Prox1+ endothelial cells. Either loss of Notch1 or reduced Notch signaling increased Prox1+ lymphatic endothelial progenitor cell numbers in the veins, leading to incomplete separation of venous and lymphatic vessels. Notch loss of function resulted in excessive Prox1+ lymphatic cells emerging from the cardinal vein and significant lymphatic overgrowth. Moreover, loss of one allele of Notch1 in Prox1 heterozygous mice rescued embryonic lethality due to Prox1 haploinsufficiency and significantly increased Prox1+ lymphatic endothelial progenitor cell numbers. Expression of a constitutively active Notch1 protein in Prox1+ cells suppressed endothelial Prox1 from E9.75 to E13.5, resulting in misspecified lymphatic endothelial cells based upon reduced expression of podoplanin, LYVE1 and VEGFR3. Notch activation resulted in the appearance of blood endothelial cells in peripheral lymphatic vessels. Activation of Notch signaling in the venous endothelium at E10.5 did not arterialize the cardinal vein, suggesting that Notch can no longer promote arterialization in the cardinal vein during this developmental stage. We report a novel role for Notch1 in limiting the number of lymphatic endothelial cells that differentiate from the veins to assure proper lymphatic specification.
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Affiliation(s)
- Aino Murtomaki
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY 10032, USA
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Deracinois B, Pottiez G, Chafey P, Teerlink T, Camoin L, Davids M, Broussard C, Couraud PO, Dehouck MP, Cecchelli R, Karamanos Y, Flahaut C. Glial-cell-mediated re-induction of the blood-brain barrier phenotype in brain capillary endothelial cells: A differential gel electrophoresis study. Proteomics 2013; 13:1185-99. [DOI: 10.1002/pmic.201200166] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 11/30/2012] [Accepted: 01/11/2013] [Indexed: 12/21/2022]
Affiliation(s)
| | | | | | - Tom Teerlink
- Metabolic Unit, Department of Clinical Chemistry; VU University Medical Center; Amsterdam; The Netherlands
| | | | - Mariska Davids
- Metabolic Unit, Department of Clinical Chemistry; VU University Medical Center; Amsterdam; The Netherlands
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