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Shimizu K, Nishimura N, Wang T, Yamamoto T, Suzuki E, Hasumi K. Anti-angiogenic activity of a novel angiostatin-like plasminogen fragment produced by a bacterial metalloproteinase. Heliyon 2024; 10:e35232. [PMID: 39170245 PMCID: PMC11336434 DOI: 10.1016/j.heliyon.2024.e35232] [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: 05/03/2024] [Revised: 07/24/2024] [Accepted: 07/24/2024] [Indexed: 08/23/2024] Open
Abstract
Tumor growth depends on angiogenesis, a process by which new blood vessel are formed from pre-existing normal blood vessels. Proteolytic fragments of plasminogen, containing varying numbers of plasminogen kringle domains, collectively known as angiostatin, are a naturally occurring inhibitor of angiogenesis and inhibit tumor growth. We have developed an "affinity-capture reactor" that enables a single-step method for the production/purification of an angiostatin-like plasminogen fragment from human plasma using an immobilized bacterial metalloproteinase. The resulting fragment, named BL-angiostatin, contains one or two glycosyl chains and the N-terminal PAN module, which are not present in canonical angiostatins tested for cancer treatment. BL-angiostatin inhibited angiogenesis in vitro at 20 nM and the growth of both allograft and human xenograft tumors as well as lung metastasis of primary tumors mice at 0.3-10 mg kg-1. Derivatives of BL angiostatin lacking the PAN module or the terminal sialic acids in the glycosyl chains showed reduced anti-angiogenic activity in vivo, suggesting a role for these functions in activity, possibly via conferring a pharmacokinetic advantage to BL angiostatin compared to recombinant angiostatin lacking both features. These results highlight the potential of BL-angiostatin for therapeutic applications.
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Affiliation(s)
- Kosuke Shimizu
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo, 183-8509, Japan
- Division of Research and Development, TMS Co., Ltd., 1-9-11F Fuchucho, Fuchu, Tokyo, 183-0055, Japan
| | - Naoko Nishimura
- Division of Research and Development, TMS Co., Ltd., 1-9-11F Fuchucho, Fuchu, Tokyo, 183-0055, Japan
| | - Taolin Wang
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo, 183-8509, Japan
| | - Tetsuro Yamamoto
- Research Center, EPS Innovative Medicine, Kagurazaka AK Building, 1-8 Tsukudo-cho, Shinjuku-ku, Tokyo, 162-0821, Japan
| | - Eriko Suzuki
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo, 183-8509, Japan
| | - Keiji Hasumi
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo, 183-8509, Japan
- Division of Research and Development, TMS Co., Ltd., 1-9-11F Fuchucho, Fuchu, Tokyo, 183-0055, Japan
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Di Virgilio F, Vultaggio-Poma V, Tarantini M, Giuliani AL. Overview of the role of purinergic signaling and insights into its role in cancer therapy. Pharmacol Ther 2024; 262:108700. [PMID: 39111410 DOI: 10.1016/j.pharmthera.2024.108700] [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: 01/07/2024] [Revised: 07/05/2024] [Accepted: 07/31/2024] [Indexed: 08/30/2024]
Abstract
Innovation of cancer therapy has received a dramatic acceleration over the last fifteen years thanks to the introduction of the novel immune checkpoint inhibitors (ICI). On the other hand, the conspicuous scientific knowledge accumulated in purinergic signaling since the early seventies is finally being transferred to the clinic. Several Phase I/II clinical trials are currently underway to investigate the effect of drugs interfering with purinergic signaling as stand-alone or combination therapy in cancer. This is supporting the novel concept of "purinergic immune checkpoint" (PIC) in cancer therapy. In the present review we will address a) the basic pharmacology and cell biology of the purinergic system; b) principles of its pathophysiology in human diseases; c) implications for cell death, cell proliferation and cancer; d) novel molecular tools to investigate nucleotide homeostasis in the extracellular environment; e) recent developments in the pharmacology of P1, P2 receptors and related ecto-enzymes; f) P1 and P2 ligands as novel diagnostic tools; g) current issues in PIC-based anti-cancer therapy. This review will provide an appraisal of the current status of purinergic signaling in cancer and will help identify future avenues of development.
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Affiliation(s)
| | | | - Mario Tarantini
- Department of Medical Sciences, University of Ferrara, Italy
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Park BN, An YS, Kim SM, Lee SJ, Park YJ, Yoon JK. 177Lu Anti-Angiogenic Radioimmunotherapy Targeting ATP Synthase in Gastric Cancer Model. Antibodies (Basel) 2024; 13:51. [PMID: 39051327 PMCID: PMC11270205 DOI: 10.3390/antib13030051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/14/2024] [Accepted: 06/24/2024] [Indexed: 07/27/2024] Open
Abstract
This study investigated a novel radioimmunotherapy strategy for targeting tumor angiogenesis. We developed a radiopharmaceutical complex by labeling an anti-adenosine triphosphate synthase (ATPS) monoclonal antibody (mAb) with the radioisotope 177Lu using DOTA as a chelating agent. 177Lu-DOTA-ATPS mAb demonstrated high labeling efficiency (99.0%) and stability in serum. MKN-45 cancer cells exhibited the highest cellular uptake, which could be specifically blocked by unlabeled ATPS mAb. In mice, 177Lu-DOTA-ATPS mAb accumulated significantly in tumors, with a tumor uptake of 16.0 ± 1.5%ID/g on day 7. 177Lu-DOTA-ATPS mAb treatment significantly reduced the viability of MKN-45 cells in a dose-dependent manner. In a xenograft tumor model, this radioimmunotherapy strategy led to substantial tumor growth inhibition (82.8%). Furthermore, combining 177Lu-DOTA-ATPS mAb with sunitinib, an anti-angiogenic drug, enhanced the therapeutic efficacy of sunitinib in the mouse model. Our study successfully developed 177Lu-DOTA-ATPS mAb, a radioimmunotherapy agent targeting tumor blood vessels. This approach demonstrates significant promise for inhibiting tumor growth, both as a single therapy and in combination with other anti-cancer drugs.
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Affiliation(s)
| | | | | | | | | | - Joon-Kee Yoon
- Department of Nuclear Medicine & Molecular Imaging, Ajou University School of Medicine, Worldcup-ro 164, Suwon 16499, Republic of Korea; (B.-N.P.); (Y.-S.A.); (S.-M.K.); (S.-J.L.); (Y.-J.P.)
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Shaydakov ME, Diaz JA, Eklöf B, Lurie F. Venous valve hypoxia as a possible mechanism of deep vein thrombosis: a scoping review. INT ANGIOL 2024; 43:309-322. [PMID: 38864688 DOI: 10.23736/s0392-9590.24.05170-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
INTRODUCTION The pathogenesis of deep vein thrombosis (DVT) has been explained by an interplay between a changed blood composition, vein wall alteration, and blood flow abnormalities. A comprehensive investigation of these components of DVT pathogenesis has substantially promoted our understanding of thrombogenesis in the venous system. Meanwhile, the process of DVT initiation remains obscure. This systematic review aims to collect, analyze, and synthesize the published evidence to propose hypoxia as a possible trigger of DVT. EVIDENCE ACQUISITION An exhaustive literature search was conducted across multiple electronic databased including PubMed, EMBASE, Scopus, and Web of Science to identify studies pertinent to the research hypothesis. The search was aimed at exploring the connection between hypoxia, reoxygenation, and the initiation of deep vein thrombosis (DVT). The following key words were used: "deep vein thrombosis," "venous thrombosis," "venous thromboembolism," "hypoxia," "reoxygenation," "venous valve," and "venous endothelium." Reviews, case reports, editorials, and letters were excluded. EVIDENCE SYNTHESIS Based on the systematic search outcome, 156 original papers relevant to the issue were selected for detailed review. These studies encompassed a range of experimental and observational clinical research, focusing on various aspects of DVT, including the anatomical, physiological, and cellular bases of the disease. A number of studies suggested limitations in the traditional understanding of Virchow's triad as an acceptable explanation for DVT initiation. Emerging evidence points to more complex interactions and additional factors that may be critical in the early stages of thrombogenesis. The role of venous valves has been recognized but remains underappreciated, with several studies indicating that these sites may act as primary loci for thrombus formation. A collection of studies describes the effects of hypoxia on venous endothelial cells at the cellular and molecular levels. Hypoxia influences several pathways that regulate endothelial cell permeability, inflammatory response, and procoagulation activity, underpinning the endothelial dysfunction noted in DVT. CONCLUSIONS Hypoxia of the venous valve may serve as an independent hypothesis to outline the DVT triggering process. Further research projects in this field may discover new molecular pathways responsible for the disease and suggest new therapeutic targets.
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Affiliation(s)
- Maxim E Shaydakov
- Division of Vascular Surgery, University of Pittsburgh Medical Center, Pittsburg, PA, USA -
| | - Jose A Diaz
- Division of Surgical Research, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Fedor Lurie
- Jobst Vascular Institute, ProMedica Health System, Toledo, OH, USA
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Li Y, Zhang M, Li Y, Shen Y, Wang X, Li X, Wang Y, Yu T, Lv J, Qin Y. Flagellar hook protein FlgE promotes macrophage activation and atherosclerosis by targeting ATP5B. Atherosclerosis 2024; 390:117429. [PMID: 38278062 DOI: 10.1016/j.atherosclerosis.2023.117429] [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: 06/30/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 01/28/2024]
Abstract
BACKGROUND AND AIMS Pseudomonas aeruginosa (P. aeruginosa) infections are strongly linked to the development of cardiovascular disease and atherosclerosis; however, the underlying mechanisms remain unclear. We previously confirmed that the flagellar hook protein FlgE in P. aeruginosa has immunostimulatory effects. This study investigated the effects and mechanisms of action of FlgE on atherogenesis. METHODS ApoE-/- mice were intravenously challenged with FlgE or FlgEM recombinant proteins for eight weeks. A murine model of chronic lung colonization was established using beads containing either mutable- or wild-type bacteria. Aortic sinus sections were stained to assess atherosclerosis progression. THP-1 macrophages exposed to FlgE or FlgEM were evaluated for their effects on lipid uptake and inflammation in vitro. Western blotting and pull-down assays were used to identify the binding proteins and signaling pathways involved, and specific blocking experiments were performed to confirm these effects. RESULTS FlgE accelerated atherosclerosis progression by triggering lipid deposition and inflammatory responses in high-fat diet (HFD)-fed ApoE-/- mice. In comparison to infection with wild-type PAO1, infection with PAO1/flgEΔBmF resulted in reduced atherosclerosis. Mechanistic analysis indicated that FlgE exacerbated lipoprotein uptake and foam cell formation by upregulating SR-A1 expression. Moreover, FlgE activated NF-κB and MAPK signaling, which subsequently led to inflammatory responses in THP-1-derived macrophages. Pull-down assays revealed that FlgE directly interacted with ATP5B, whereas blocking ATP5B attenuated FlgE-induced responses in macrophages. CONCLUSIONS FlgE induces macrophage lipid uptake and pro-inflammatory responses mediated by ATP5B/NF-kB/AP-1 signaling, which eventually results in atherosclerosis. These findings support the development of therapeutic strategies for P. aeruginosa infection-induced atherosclerosis.
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Affiliation(s)
- Yuanyuan Li
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Min Zhang
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Yanmeng Li
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Ying Shen
- National Clinical Research Center for Hematologic Disease, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou Medical College, Suchow University, Suzhou, 215006, China
| | - Xiaoping Wang
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Xiaolu Li
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, 266000, China
| | - Yiqiang Wang
- Wisdom Lake Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, China
| | - Tao Yu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266000, China.
| | - Jie Lv
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China.
| | - Yan Qin
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China.
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Manandhar B, Pandzic E, Deshpande N, Chen SY, Wasinger VC, Kockx M, Glaros EN, Ong KL, Thomas SR, Wilkins MR, Whan RM, Cochran BJ, Rye KA. ApoA-I Protects Pancreatic β-Cells From Cholesterol-Induced Mitochondrial Damage and Restores Their Ability to Secrete Insulin. Arterioscler Thromb Vasc Biol 2024; 44:e20-e38. [PMID: 38095105 DOI: 10.1161/atvbaha.123.319378] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 11/13/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND High cholesterol levels in pancreatic β-cells cause oxidative stress and decrease insulin secretion. β-cells can internalize apo (apolipoprotein) A-I, which increases insulin secretion. This study asks whether internalization of apoA-I improves β-cell insulin secretion by reducing oxidative stress. METHODS Ins-1E cells were cholesterol-loaded by incubation with cholesterol-methyl-β-cyclodextrin. Insulin secretion in the presence of 2.8 or 25 mmol/L glucose was quantified by radioimmunoassay. Internalization of fluorescently labeled apoA-I by β-cells was monitored by flow cytometry. The effects of apoA-I internalization on β-cell gene expression were evaluated by RNA sequencing. ApoA-I-binding partners on the β-cell surface were identified by mass spectrometry. Mitochondrial oxidative stress was quantified in β-cells and isolated islets with MitoSOX and confocal microscopy. RESULTS An F1-ATPase β-subunit on the β-cell surface was identified as the main apoA-I-binding partner. β-cell internalization of apoA-I was time-, concentration-, temperature-, cholesterol-, and F1-ATPase β-subunit-dependent. β-cells with internalized apoA-I (apoA-I+ cells) had higher cholesterol and cell surface F1-ATPase β-subunit levels than β-cells without internalized apoA-I (apoA-I- cells). The internalized apoA-I colocalized with mitochondria and was associated with reduced oxidative stress and increased insulin secretion. The IF1 (ATPase inhibitory factor 1) attenuated apoA-I internalization and increased oxidative stress in Ins-1E β-cells and isolated mouse islets. Differentially expressed genes in apoA-I+ and apoA-I- Ins-1E cells were related to protein synthesis, the unfolded protein response, insulin secretion, and mitochondrial function. CONCLUSIONS These results establish that β-cells are functionally heterogeneous, and apoA-I restores insulin secretion in β-cells with elevated cholesterol levels by improving mitochondrial redox balance.
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Affiliation(s)
- Bikash Manandhar
- School of Biomedical Sciences, Faculty of Medicine (B.M., E.N.G., K.L.O., S.R.T., B.J.C., K.-A.R.), UNSW, Sydney, Australia
| | - Elvis Pandzic
- Katharina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre (E.P., R.M.W.), UNSW, Sydney, Australia
| | - Nandan Deshpande
- School of Biotechnology and Biomolecular Sciences (N.D., S.-Y.C., M.R.W.), UNSW, Sydney, Australia
| | - Sing-Young Chen
- School of Biotechnology and Biomolecular Sciences (N.D., S.-Y.C., M.R.W.), UNSW, Sydney, Australia
| | - Valerie C Wasinger
- Bioanalytical Mass Spectrometry Facility, Mark Wainwright Analytical Centre (V.C.W.), UNSW, Sydney, Australia
| | - Maaike Kockx
- ANZAC Research Institute, Concord, Sydney, Australia (M.K.)
| | - Elias N Glaros
- School of Biomedical Sciences, Faculty of Medicine (B.M., E.N.G., K.L.O., S.R.T., B.J.C., K.-A.R.), UNSW, Sydney, Australia
| | - Kwok Leung Ong
- School of Biomedical Sciences, Faculty of Medicine (B.M., E.N.G., K.L.O., S.R.T., B.J.C., K.-A.R.), UNSW, Sydney, Australia
| | - Shane R Thomas
- School of Biomedical Sciences, Faculty of Medicine (B.M., E.N.G., K.L.O., S.R.T., B.J.C., K.-A.R.), UNSW, Sydney, Australia
| | - Marc R Wilkins
- School of Biotechnology and Biomolecular Sciences (N.D., S.-Y.C., M.R.W.), UNSW, Sydney, Australia
| | - Renee M Whan
- Katharina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre (E.P., R.M.W.), UNSW, Sydney, Australia
| | - Blake J Cochran
- School of Biomedical Sciences, Faculty of Medicine (B.M., E.N.G., K.L.O., S.R.T., B.J.C., K.-A.R.), UNSW, Sydney, Australia
| | - Kerry-Anne Rye
- School of Biomedical Sciences, Faculty of Medicine (B.M., E.N.G., K.L.O., S.R.T., B.J.C., K.-A.R.), UNSW, Sydney, Australia
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Zhang D, Jiang Y, Dong Y, Fu L, Zhuang L, Wu K, Dou X, Xu B, Wang C, Gong J. siRNA targeting Atp5a1 gene encoding ATPase α, the ligand of Peg fimbriae, reduced Salmonella Enteritidis adhesion. Avian Pathol 2023; 52:412-419. [PMID: 37526573 DOI: 10.1080/03079457.2023.2243842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/20/2023] [Accepted: 07/31/2023] [Indexed: 08/02/2023]
Abstract
Salmonella enterica serovar Enteritidis (S. Enteritidis) is a zoonotic pathogen that can infect both humans and animals. Among the 13 types of fimbrial operons in S. Enteritidis, the highly conserved Peg fimbriae play a crucial role in the adhesion and invasion of S. Enteritidis into host cells but are not well studied. In this study, we identified the ATP synthase subunit alpha (ATPase α) as a ligand of Peg fimbriae using ligand blotting and mass spectrometry techniques. We confirmed the in vitro binding of ATPase α to the purified adhesion protein (PegD). Furthermore, we used siRNA to suppress the expression of ATPase α gene Atp5a1 in Leghorn male hepatoma (LMH) cells, which resulted in a significant reduction in the adhesion rate of S. Enteritidis to the cells (P < 0.05). The findings in this study provide insight into the mechanism of S. Enteritidis infection through Peg fimbriae and highlight the importance of ATPase α in the adhesion process.RESEARCH HIGHLIGHTS Ligand blotting was performed to screen the ligand of S. Enteritidis Peg fimbriae.Binding assay confirmed that ATPase α is the ligand of the Peg fimbriae.siRNA targeting ATPase α gene (Atp5a1) significantly reduced S. Enteritidis adhesion.
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Affiliation(s)
- Di Zhang
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, People's Republic of China
| | - Yi Jiang
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, People's Republic of China
| | - Yongyi Dong
- Jiangsu Animal Disease Prevention and Control Center, Nanjing, People's Republic of China
| | - Lixia Fu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People's Republic of China
| | - Linlin Zhuang
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, People's Republic of China
| | - Kun Wu
- Jiangsu Animal Disease Prevention and Control Center, Nanjing, People's Republic of China
| | - Xinhong Dou
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, People's Republic of China
| | - Bu Xu
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, People's Republic of China
| | - Chengming Wang
- Department of Pathobiology, Auburn University College of Veterinary Medicine, Auburn, AL, USA
| | - Jiansen Gong
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, People's Republic of China
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Chang YW, Tony Yang T, Chen MC, Liaw YG, Yin CF, Lin-Yan XQ, Huang TY, Hou JT, Hung YH, Hsu CL, Huang HC, Juan HF. Spatial and temporal dynamics of ATP synthase from mitochondria toward the cell surface. Commun Biol 2023; 6:427. [PMID: 37072500 PMCID: PMC10113393 DOI: 10.1038/s42003-023-04785-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 03/30/2023] [Indexed: 04/20/2023] Open
Abstract
Ectopic ATP synthase complex (eATP synthase), located on cancer cell surface, has been reported to possess catalytic activity that facilitates the generation of ATP in the extracellular environment to establish a suitable microenvironment and to be a potential target for cancer therapy. However, the mechanism of intracellular ATP synthase complex transport remains unclear. Using a combination of spatial proteomics, interaction proteomics, and transcriptomics analyses, we find ATP synthase complex is first assembled in the mitochondria and subsequently delivered to the cell surface along the microtubule via the interplay of dynamin-related protein 1 (DRP1) and kinesin family member 5B (KIF5B). We further demonstrate that the mitochondrial membrane fuses to the plasma membrane in turn to anchor ATP syntheses on the cell surface using super-resolution imaging and real-time fusion assay in live cells. Our results provide a blueprint of eATP synthase trafficking and contribute to the understanding of the dynamics of tumor progression.
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Grants
- 109-2221-E-010-012-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MOST 109-2221-E-010-011-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MOST 109-2327-B-006-004 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MOST 109-2320-B-002-017-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- MOST 109-2221-E-002-161-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- NTU-110L8808 Ministry of Education (Ministry of Education, Republic of China (Taiwan))
- NTU-CC-109L104702-2 Ministry of Education (Ministry of Education, Republic of China (Taiwan))
- NTU-110L7103 Ministry of Education (Ministry of Education, Republic of China (Taiwan))
- NTU-111L7107 Ministry of Education (Ministry of Education, Republic of China (Taiwan))
- NTU-CC-112L892102 Ministry of Education (Ministry of Education, Republic of China (Taiwan))
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Affiliation(s)
- Yi-Wen Chang
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - T Tony Yang
- Department of Electrical Engineering, National Taiwan University, Taipei, 106, Taiwan
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, 106, Taiwan
| | - Min-Chun Chen
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Y-Geh Liaw
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Chieh-Fan Yin
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Xiu-Qi Lin-Yan
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Ting-Yu Huang
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Jen-Tzu Hou
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Yi-Hsuan Hung
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Chia-Lang Hsu
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan
- Department of Medical Research, National Taiwan University Hospital, Taipei, 100, Taiwan
| | - Hsuan-Cheng Huang
- Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan.
| | - Hsueh-Fen Juan
- Department of Life Science, Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106, Taiwan.
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, 106, Taiwan.
- Center for Computational and Systems Biology, National Taiwan University, Taipei, 106, Taiwan.
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Ueda K, Suwanmanee Y. ATP5B Is an Essential Factor for Hepatitis B Virus Entry. Int J Mol Sci 2022; 23:ijms23179570. [PMID: 36076968 PMCID: PMC9455612 DOI: 10.3390/ijms23179570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
Elucidation of the factors responsible for hepatitis B virus (HBV) is extremely important in order to understand the viral life cycle and pathogenesis, and thereby explore potential anti-HBV drugs. The recent determination that sodium taurocholate co-transporting peptide (NTCP) is an essential molecule for the HBV entry into cells led to the development of an HBV infection system in vitro using a human hepatocellular carcinoma (HCC) cell line expressing NTCP; however, the precise mechanism of HBV entry is still largely unknown, and thus it may be necessary to elucidate all the molecules involved. Here, we identified ATP5B as another essential factor for HBV entry. ATP5B was expressed on the cell surface of the HCC cell lines and bound with myristoylated but not with non-myristoylated preS1 2-47, which supported the notion that ATP5B is involved in the HBV entry process. Knockdown of ATP5B in NTCP-expressing HepG2 cells, which allowed HBV infection, reduced HBV infectivity with less cccDNA formation. Taken together, these results strongly suggested that ATP5B is an essential factor for HBV entry into the cells.
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10
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King DR, Sedovy MW, Eaton X, Dunaway LS, Good ME, Isakson BE, Johnstone SR. Cell-To-Cell Communication in the Resistance Vasculature. Compr Physiol 2022; 12:3833-3867. [PMID: 35959755 DOI: 10.1002/cphy.c210040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The arterial vasculature can be divided into large conduit arteries, intermediate contractile arteries, resistance arteries, arterioles, and capillaries. Resistance arteries and arterioles primarily function to control systemic blood pressure. The resistance arteries are composed of a layer of endothelial cells oriented parallel to the direction of blood flow, which are separated by a matrix layer termed the internal elastic lamina from several layers of smooth muscle cells oriented perpendicular to the direction of blood flow. Cells within the vessel walls communicate in a homocellular and heterocellular fashion to govern luminal diameter, arterial resistance, and blood pressure. At rest, potassium currents govern the basal state of endothelial and smooth muscle cells. Multiple stimuli can elicit rises in intracellular calcium levels in either endothelial cells or smooth muscle cells, sourced from intracellular stores such as the endoplasmic reticulum or the extracellular space. In general, activation of endothelial cells results in the production of a vasodilatory signal, usually in the form of nitric oxide or endothelial-derived hyperpolarization. Conversely, activation of smooth muscle cells results in a vasoconstriction response through smooth muscle cell contraction. © 2022 American Physiological Society. Compr Physiol 12: 1-35, 2022.
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Affiliation(s)
- D Ryan King
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA
| | - Meghan W Sedovy
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA.,Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, Virginia, USA
| | - Xinyan Eaton
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA
| | - Luke S Dunaway
- Robert M. Berne Cardiovascular Research Centre, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Miranda E Good
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Centre, University of Virginia School of Medicine, Charlottesville, Virginia, USA.,Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Scott R Johnstone
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Center for Vascular and Heart Research, Virginia Tech, Roanoke, Virginia, USA.,Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, USA
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11
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Gore E, Duparc T, Genoux A, Perret B, Najib S, Martinez LO. The Multifaceted ATPase Inhibitory Factor 1 (IF1) in Energy Metabolism Reprogramming and Mitochondrial Dysfunction: A New Player in Age-Associated Disorders? Antioxid Redox Signal 2022; 37:370-393. [PMID: 34605675 PMCID: PMC9398489 DOI: 10.1089/ars.2021.0137] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance: The mitochondrial oxidative phosphorylation (OXPHOS) system, comprising the electron transport chain and ATP synthase, generates membrane potential, drives ATP synthesis, governs energy metabolism, and maintains redox balance. OXPHOS dysfunction is associated with a plethora of diseases ranging from rare inherited disorders to common conditions, including diabetes, cancer, neurodegenerative diseases, as well as aging. There has been great interest in studying regulators of OXPHOS. Among these, ATPase inhibitory factor 1 (IF1) is an endogenous inhibitor of ATP synthase that has long been thought to avoid the consumption of cellular ATP when ATP synthase acts as an ATP hydrolysis enzyme. Recent Advances: Recent data indicate that IF1 inhibits ATP synthesis and is involved in a multitude of mitochondrial-related functions, such as mitochondrial quality control, energy metabolism, redox balance, and cell fate. IF1 also inhibits the ATPase activity of cell-surface ATP synthase, and it is used as a cardiovascular disease biomarker. Critical Issues: Although recent data have led to a paradigm shift regarding IF1 functions, these have been poorly studied in entire organisms and in different organs. The understanding of the cellular biology of IF1 is, therefore, still limited. The aim of this review was to provide an overview of the current understanding of the role of IF1 in mitochondrial functions, health, and diseases. Future Directions: Further investigations of IF1 functions at the cell, organ, and whole-organism levels and in different pathophysiological conditions will help decipher the controversies surrounding its involvement in mitochondrial function and could unveil therapeutic strategies in human pathology. Antioxid. Redox Signal. 37, 370-393.
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Affiliation(s)
- Emilia Gore
- I2MC, University of Toulouse, INSERM, UPS, Toulouse, France
| | - Thibaut Duparc
- I2MC, University of Toulouse, INSERM, UPS, Toulouse, France
| | - Annelise Genoux
- I2MC, University of Toulouse, INSERM, UPS, Toulouse, France.,Service de Biochimie, Pôle de biologie, Hôpital de Purpan, CHU de Toulouse, Toulouse, France
| | - Bertrand Perret
- I2MC, University of Toulouse, INSERM, UPS, Toulouse, France.,Service de Biochimie, Pôle de biologie, Hôpital de Purpan, CHU de Toulouse, Toulouse, France
| | - Souad Najib
- I2MC, University of Toulouse, INSERM, UPS, Toulouse, France
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12
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Hong TU, Park SK. The Roles of Vascular Endothelial Growth Factor, Angiostatin, and Endostatin in Nasal Polyp Development. JOURNAL OF RHINOLOGY 2022. [DOI: 10.18787/jr.2021.00400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Background and Objectives: Microvascular remodeling and angiogenesis are elements of tissue remodeling characteristic of chronic inflammatory diseases, including nasal polyps (NPs). Angiogenesis reflects the balance between the actions of pro- and anti-angiogenic factors. Many pro-angiogenic factors are known, including vascular endothelial growth factor (VEGF). A number of anti-angiogenic factors (e.g., angiostatin and endostatin) also has been identified. Our objective was to assess the roles of VEGF, angiostatin, and endostatin in NP development.Methods: The expression levels of VEGF, angiostatin, and endostatin were measured in NPs harvested during endoscopic endonasal surgery and compared with those in inferior turbinate mucosa (control) samples acquired from patients with hypertrophic rhinitis without allergy. Western blotting and immunohistochemical staining were used to analyze all samples.Results: The levels of VEGF and angiostatin were significantly higher in the NP subjects than in the controls. Neither the VEGF/angiostatin ratio nor the endostatin level differed significantly between the two groups. However, the VEGF/endostatin ratio was significantly higher in the NP than in the control group. Both the NP and control tissues were diffusely immunoreactive for VEGF, angiostatin, and endostatin.Conclusion: NP-associated hypoxia can elevate angiostatin level; moreover, an imbalance in the VEGF/endostatin ratio can contribute to NP formation.
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13
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Quantitative phosphoproteomics reveals ectopic ATP synthase on mesenchymal stem cells to promote tumor progression via ERK/c-Fos pathway activation. Mol Cell Proteomics 2022; 21:100237. [PMID: 35439648 PMCID: PMC9117939 DOI: 10.1016/j.mcpro.2022.100237] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 04/01/2022] [Accepted: 04/13/2022] [Indexed: 11/22/2022] Open
Abstract
The tumor microenvironment (TME), which comprises cellular and noncellular components, is involved in the complex process of cancer development. Emerging evidence suggests that mesenchymal stem cells (MSCs), one of the vital regulators of the TME, foster tumor progression through paracrine secretion. However, the comprehensive phosphosignaling pathways that are mediated by MSC-secreting factors have not yet been fully established. In this study, we attempt to dissect the MSC-triggered mechanism in lung cancer using quantitative phosphoproteomics. A total of 1958 phosphorylation sites are identified in lung cancer cells stimulated with MSC-conditioned medium. Integrative analysis of the identified phosphoproteins and predicted kinases demonstrates that MSC-conditioned medium functionally promotes the proliferation and migration of lung cancer via the ERK/phospho-c-Fos-S374 pathway. Recent studies have reported that extracellular ATP accumulates in the TME and stimulates the P2X7R on the cancer cell membrane via purinergic signaling. We observe that ectopic ATP synthase is located on the surface of MSCs and excreted extracellular ATP into the lung cancer microenvironment to trigger the ERK/phospho-c-Fos-S374 pathway, which is consistent with these previous findings. Our results suggest that ectopic ATP synthase on the surface of MSCs releases extracellular ATP into the TME, which promotes cancer progression via activation of the ERK/phospho-c-Fos-S374 pathway. Mesenchymal stem cells (MSCs) enhance lung cancer development through extracellular factor secretion. Phosphoproteomics discover MSCs-regulated phosphosignaling in the lung cancer. Ectopic ATP synthase on MSCs surface produces ATP into the tumor microenvironment. MSC-secreted extracellular ATP mediates the phosphorylation of the ERK/c-Fos axis.
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14
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Sasaki S, Oba K, Kodera Y, Itakura M, Shichiri M. ANGT_HUMAN[448–462], an Anorexigenic Peptide Identified using Plasma Peptidomics. J Endocr Soc 2022; 6:bvac082. [PMID: 35702602 PMCID: PMC9184509 DOI: 10.1210/jendso/bvac082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Indexed: 11/19/2022] Open
Abstract
Abstract
The discovery of bioactive peptides is an important research target that enables the elucidation of the pathophysiology of human diseases and provides seeds for drug discovery. Using a large number of native peptides previously identified using plasma peptidomics technology, we sequentially synthesized selected sequences and subjected them to functional screening using human cultured cells. A 15-amino-acid residue proangiotensinogen-derived peptide, designated ANGT_HUMAN[448–462], elicited cellular responses and bound to cultured human cells. Synthetic fluorescent-labeled and biotinylated ANGT_HUMAN[448–462] peptides were rendered to bind to cell- and tissue-derived proteins and peptide-cell protein complexes were retrieved and analyzed using liquid chromatography-tandem mass spectrometry, revealing the β-subunit of ATP synthase as its cell-surface binding protein. Because ATP synthase mediates the effects of anorexigenic peptides, the ability of ANGT_HUMAN[448–462] to modulate eating behavior in mice was investigated. Both intraperitoneal and intracerebroventricular injections of low doses of ANGT_HUMAN[448–462] suppressed spontaneous food and water intake throughout the dark phase of the diurnal cycle without affecting locomotor activity. Immunoreactive ANGT_HUMAN[448–462], distributed throughout human tissues and in human-derived cells, is mostly co-localized with angiotensin II and is occasionally present separately from angiotensin II. In this study, an anorexigenic peptide, ANGT_HUMAN[448–462], was identified by exploring cell surface target proteins of the human native peptides identified using plasma peptidomics.
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Affiliation(s)
- Sayaka Sasaki
- Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine Kanagawa 252-0374, Japan
| | - Kazuhito Oba
- Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine Kanagawa 252-0374, Japan
| | - Yoshio Kodera
- Department of Physics, Kitasato University School of Science, Kanagawa 252-0373, Japan
- Center for Disease Proteomics, Kitasato University School of Science, Kanagawa 252-0373, Japan
| | - Makoto Itakura
- Department of Biochemistry, Kitasato University School of Medicine, Kanagawa 252-0374, Japan
| | - Masayoshi Shichiri
- Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine Kanagawa 252-0374, Japan
- Department of Diabetes, Endocrinology and Metabolism, Tokyo Kyosai Hospital, Tokyo 153-8934, Japan
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15
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Role of Anti-Angiogenic Factors in the Pathogenesis of Breast Cancer: A Review of Therapeutic Potential. Pathol Res Pract 2022; 236:153956. [DOI: 10.1016/j.prp.2022.153956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 05/06/2022] [Accepted: 05/25/2022] [Indexed: 11/23/2022]
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16
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Moesin: A novel receptor on NK lymphocytes binds to TOMM40 on K562 leukemia cells initiating cytolysis. Hum Immunol 2022; 83:418-427. [DOI: 10.1016/j.humimm.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/22/2022] [Accepted: 03/03/2022] [Indexed: 11/04/2022]
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17
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The Immunogenetics of Vasculitis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1367:299-334. [DOI: 10.1007/978-3-030-92616-8_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Wang T, Ma F, Qian HL. Defueling the cancer: ATP synthase as an emerging target in cancer therapy. MOLECULAR THERAPY-ONCOLYTICS 2021; 23:82-95. [PMID: 34703878 PMCID: PMC8517097 DOI: 10.1016/j.omto.2021.08.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Reprogramming of cellular metabolism is a hallmark of cancer. Mitochondrial ATP synthase (MAS) produces most of the ATP that drives the cell. High expression of the MAS-composing proteins is found during cancer and is linked to a poor prognosis in glioblastoma, ovarian cancer, prostate cancer, breast cancer, and clear cell renal cell carcinoma. Cell surface-expressed ATP synthase, translocated from mitochondrion to cell membrane, involves the angiogenesis, tumorigenesis, and metastasis of cancer. ATP synthase has therefore been considered a therapeutic target. We review recent various ATP synthase inhibitors that suppress tumor growth and are being tested for the clinic.
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Affiliation(s)
- Ting Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.,Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute, Beijing 100021, China
| | - Fei Ma
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Hai-Li Qian
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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19
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Li Y, Shen Y, Zheng Y, Ji S, Wang M, Wang B, Han Q, Tian Y, Wang Y. Flagellar Hook Protein FlgE Induces Microvascular Hyperpermeability via Ectopic ATP Synthase β on Endothelial Surface. Front Cell Infect Microbiol 2021; 11:724912. [PMID: 34796124 PMCID: PMC8593108 DOI: 10.3389/fcimb.2021.724912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/14/2021] [Indexed: 11/13/2022] Open
Abstract
We previously demonstrated the immunostimulatory efficacy of Pseudomonas aeruginosa flagellar hook protein FlgE on epithelial cells, presumably via ectopic ATP synthases or subunits ATP5B on cell membranes. Here, by using recombinant wild-type FlgE, mutant FlgE (FlgEM; bearing mutations on two postulated critical epitopes B and F), and a FlgE analog in pull-down assay, Western blotting, flow cytometry, and ELISA, actual bindings of FlgE proteins or epitope B/F peptides with ATP5B were all confirmed. Upon treatment with FlgE proteins, human umbilical vein endothelial cells (HUVECs) and SV40-immortalized murine vascular endothelial cells manifested decreased proliferation, migration, tube formation, and surface ATP production and increased apoptosis. FlgE proteins increased the permeability of HUVEC monolayers to soluble large molecules like dextran as well as to neutrophils. Immunofluorescence showed that FlgE induced clustering and conjugation of F-actin in HUVECs. In Balb/c-nude mice bearing transplanted solid tumors, FlgE proteins induced a microvascular hyperpermeability in pinna, lungs, tumor mass, and abdominal cavity. All effects observed in FlgE proteins were partially or completely impaired in FlgEM proteins or blocked by pretreatment with anti-ATP5B antibodies. Upon coculture of bacteria with HUVECs, FlgE was detectable in the membrane and cytosol of HUVECs. It was concluded that FlgE posed a pathogenic ligand of ectopic ATP5B that, upon FlgE-ATP5B coupling on endothelial cells, modulated properties and increased permeability of endothelial layers both in vitro and in vivo. The FlgE-ectopic ATP5B duo might contribute to the pathogenesis of disorders associated with bacterial infection or ectopic ATP5B-positive cells.
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Affiliation(s)
- Yuanyuan Li
- The MOH Key Lab of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, China.,Department of Laboratory Examination, People's Hospital of Rizhao City, Rizhao, China
| | - Ying Shen
- The MOH Key Lab of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, China
| | - Yudan Zheng
- The MOH Key Lab of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, China
| | - Shundong Ji
- The MOH Key Lab of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, China
| | - Mengru Wang
- The MOH Key Lab of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, China
| | - Beibei Wang
- Center for Informational Biology, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Qingzhen Han
- Department of Laboratory Examination, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, China
| | - Yufeng Tian
- Department of Laboratory Examination, People's Hospital of Rizhao City, Rizhao, China
| | - Yiqiang Wang
- The MOH Key Lab of Thrombosis and Hemostasis, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, China.,Central Lab, Xiang'an Hospital of Xiamen University, Xiamen University Medical Center, Xiamen University, Xiamen, China
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20
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Yin M, O'Neill LAJ. The role of the electron transport chain in immunity. FASEB J 2021; 35:e21974. [PMID: 34793601 DOI: 10.1096/fj.202101161r] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/17/2021] [Accepted: 09/21/2021] [Indexed: 12/27/2022]
Abstract
The electron transport chain (ETC) couples oxidative phosphorylation (OXPHOS) with ATP synthase to drive the generation of ATP. In immune cells, research surrounding the ETC has drifted away from bioenergetics since the discovery of cytochrome c (Cyt c) release as a signal for programmed cell death. Complex I has been shown to generate reactive oxygen species (ROS), with key roles identified in inflammatory macrophages and T helper 17 cells (TH 17) cells. Complex II is the site of reverse electron transport (RET) in inflammatory macrophages and is also responsible for regulating fumarate levels linking to epigenetic changes. Complex III also produces ROS which activate hypoxia-inducible factor 1-alpha (HIF-1α) and can participate in regulatory T cell (Treg ) function. Complex IV is required for T cell activation and differentiation and the proper development of Treg subsets. Complex V is required for TH 17 differentiation and can be expressed on the surface of tumor cells where it is recognized by anti-tumor T and NK cells. In this review, we summarize these findings and speculate on the therapeutic potential of targeting the ETC as an anti-inflammatory strategy.
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Affiliation(s)
- Maureen Yin
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Luke A J O'Neill
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
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21
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He J, Cui Z, Zhu Y. The role of caveolae in endothelial dysfunction. MEDICAL REVIEW (BERLIN, GERMANY) 2021; 1:78-91. [PMID: 37724072 PMCID: PMC10388784 DOI: 10.1515/mr-2021-0005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 08/03/2021] [Indexed: 09/20/2023]
Abstract
Caveolae, the specialized cell-surface plasma membrane invaginations which are abundant in endothelial cells, play critical roles in regulating various cellular processes, including cholesterol homeostasis, nitric oxide production, and signal transduction. Endothelial caveolae serve as a membrane platform for compartmentalization, modulation, and integration of signal events associated with endothelial nitric oxide synthase, ATP synthase β, and integrins, which are involved in the regulation of endothelial dysfunction and related cardiovascular diseases, such as atherosclerosis and hypertension. Furthermore, these dynamic microdomains on cell membrane are modulated by various extracellular stimuli, including cholesterol and flow shear stress. In this brief review, we summarize the critical roles of caveolae in the orchestration of endothelial function based on recent findings as well as our work over the past two decades.
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Affiliation(s)
- Jinlong He
- Tianjin Key Laboratory of Metabolic Diseases, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics and Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin300070, China
| | - Zhen Cui
- Tianjin Key Laboratory of Metabolic Diseases, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics and Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin300070, China
| | - Yi Zhu
- Tianjin Key Laboratory of Metabolic Diseases, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics and Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin300070, China
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22
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Song W, Shi X, Liu K, Li R, Niu L, Su L, Wu H. Detection of mitochondrial coupling factor 6 in placental tissues from preeclamptic pregnancies and its influence on biological behavior of trophoblast cells. Exp Ther Med 2021; 22:1185. [PMID: 34475975 PMCID: PMC8406808 DOI: 10.3892/etm.2021.10619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 03/15/2021] [Indexed: 12/21/2022] Open
Abstract
Increased levels of mitochondrial coupling factor 6 (CF6) are present in the peripheral blood of patients with preeclamptic pregnancies, and are particularly evident in cases of early-onset or severe preeclampsia. The present study examined the location and expression levels of CF6 in the placental tissue and its effect on the biological behavior of trophoblast cells. Placental tissue microarrays, including placental villous cytotrophoblast and extravillous cytotrophoblast microarrays, were used to detect the location and relative expression levels of CF6 in the placenta using immunohistochemistry. It was found that CF6 was expressed in both the normal and preeclamptic placenta, but its levels were higher in the preeclamptic tissues. In addition, the effects of the hypoxic environment on the biological behaviors of trophoblast cells were investigated in the JAR and JEG-3 cell lines. Following induction of hypoxia, the expression levels of CF6 were increased. Moreover, exogenous addition of human recombinant CF6 attenuated cell invasion, but exerted no effect on cell proliferation. At the molecular level, the expression levels of MMP-2 were decreased and were accompanied with a reduction in cell invasion following addition of exogenous CF6. In conclusion, the increased expression levels of CF6 and its effects in reducing the invasive abilities of trophoblast cells may be involved in the pathogenesis of severe preeclampsia.
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Affiliation(s)
- Wanyu Song
- Department of Gynecology and Obstetrics, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China
| | - Xufeng Shi
- Department of Gynecology and Obstetrics, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China
| | - Kan Liu
- Department of Gynecology and Obstetrics, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China
| | - Ranhong Li
- Department of Gynecology and Obstetrics, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China
| | - Leilei Niu
- Department of Gynecology and Obstetrics, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China
| | - Lijun Su
- Department of Gynecology and Obstetrics, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China
| | - Haiying Wu
- Department of Gynecology and Obstetrics, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China
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23
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Hutchings G, Kruszyna Ł, Nawrocki MJ, Strauss E, Bryl R, Spaczyńska J, Perek B, Jemielity M, Mozdziak P, Kempisty B, Nowicki M, Krasiński Z. Molecular Mechanisms Associated with ROS-Dependent Angiogenesis in Lower Extremity Artery Disease. Antioxidants (Basel) 2021; 10:735. [PMID: 34066926 PMCID: PMC8148529 DOI: 10.3390/antiox10050735] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/01/2021] [Accepted: 05/04/2021] [Indexed: 02/06/2023] Open
Abstract
Currently, atherosclerosis, which affects the vascular bed of all vital organs and tissues, is considered as a leading cause of death. Most commonly, atherosclerosis involves coronary and peripheral arteries, which results in acute (e.g., myocardial infarction, lower extremities ischemia) or chronic (persistent ischemia leading to severe heart failure) consequences. All of them have a marked unfavorable impact on the quality of life and are associated with increased mortality and morbidity in human populations. Lower extremity artery disease (LEAD, also defined as peripheral artery disease, PAD) refers to atherosclerotic occlusive disease of the lower extremities, where partial or complete obstruction of peripheral arteries is observed. Decreased perfusion can result in ischemic pain, non-healing wounds, and ischemic ulcers, and significantly reduce the quality of life. However, the progressive atherosclerotic changes cause stimulation of tissue response processes, like vessel wall remodeling and neovascularization. These mechanisms of adapting the vascular network to pathological conditions seem to play a key role in reducing the impact of the changes limiting the flow of blood. Neovascularization as a response to ischemia induces sprouting and expansion of the endothelium to repair and grow the vessels of the circulatory system. Neovascularization consists of three different biological processes: vasculogenesis, angiogenesis, and arteriogenesis. Both molecular and environmental factors that may affect the process of development and growth of blood vessels were analyzed. Particular attention was paid to the changes taking place during LEAD. It is important to consider the molecular mechanisms underpinning vessel growth. These mechanisms will also be examined in the context of diseases commonly affecting blood vessel function, or those treatable in part by manipulation of angiogenesis. Furthermore, it may be possible to induce the process of blood vessel development and growth to treat peripheral vascular disease and wound healing. Reactive oxygen species (ROS) play an important role in regulation of essential cellular signaling pathways such as cell differentiation, proliferation, migration and apoptosis. With regard to the repair processes taking place during diseases such as LEAD, prospective therapeutic methods have been described that could significantly improve the treatment of vessel diseases in the future. Summarizing, regenerative medicine holds the potential to transform the therapeutic methods in heart and vessel diseases treatment.
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Affiliation(s)
- Greg Hutchings
- The School of Medicine, Medical Sciences and Nutrition, Aberdeen University, Aberdeen AB25 2ZD, UK;
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (M.J.N.); (R.B.); (J.S.)
| | - Łukasz Kruszyna
- Department of Vascular and Endovascular Surgery, Angiology and Phlebology, Poznan University of Medical Sciences, 60-848 Poznan, Poland; (Ł.K.); (E.S.); (Z.K.)
| | - Mariusz J. Nawrocki
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (M.J.N.); (R.B.); (J.S.)
| | - Ewa Strauss
- Department of Vascular and Endovascular Surgery, Angiology and Phlebology, Poznan University of Medical Sciences, 60-848 Poznan, Poland; (Ł.K.); (E.S.); (Z.K.)
- Institute of Human Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland
| | - Rut Bryl
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (M.J.N.); (R.B.); (J.S.)
| | - Julia Spaczyńska
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (M.J.N.); (R.B.); (J.S.)
| | - Bartłomiej Perek
- Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, 61-848 Poznan, Poland; (B.P.); (M.J.)
| | - Marek Jemielity
- Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, 61-848 Poznan, Poland; (B.P.); (M.J.)
| | - Paul Mozdziak
- Physiology Graduate Program, North Carolina State University, Raleigh, NC 27695, USA;
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA;
| | - Bartosz Kempisty
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (M.J.N.); (R.B.); (J.S.)
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA;
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland
| | - Michał Nowicki
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA;
| | - Zbigniew Krasiński
- Department of Vascular and Endovascular Surgery, Angiology and Phlebology, Poznan University of Medical Sciences, 60-848 Poznan, Poland; (Ł.K.); (E.S.); (Z.K.)
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Liu WJ, Chang YS, Chen PY, Wu SP. F1 ATP synthase β subunit is a putative receptor involved in white spot syndrome virus infection in shrimp by binding with viral envelope proteins VP51B and VP150. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 114:103810. [PMID: 32750398 DOI: 10.1016/j.dci.2020.103810] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
White spot syndrome virus (WSSV) is highly virulent toward shrimp, and F1 ATP synthase β subunit (ATPsyn-β) has been suggested to be involved in WSSV infection. Therefore, in this study, interactions between Penaeus monodon ATPsyn-β (PmATPsyn-β) and WSSV structural proteins were characterized. Based on the results of yeast two-hybrid, co-immunoprecipitation, and protein pull-down assays, WSSV VP51B and VP150 were identified as being able to interact with PmATPsyn-β. Membrane topology assay results indicated that VP51B and VP150 are envelope proteins with large portions exposed outside the WSSV virion. Cellular localization assay results demonstrated that VP51B and VP150 co-localize with PmATPsyn-β on the membranes of transfected cells. Enzyme-linked immunosorbent assay (ELISA) and competitive ELISA results demonstrated that VP51B and VP150 bound to PmATPsyn-β in a dose-dependent manner, which could be competitively inhibited by the addition of WSSV virions. In vivo neutralization assay results further showed that both recombinant VP51B and VP150 could delay mortality in shrimp challenged with WSSV.
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Affiliation(s)
- Wang-Jing Liu
- Department of Earth and Life Science, University of Taipei, Taipei, Taiwan.
| | - Yun-Shiang Chang
- Department of Biomedical Sciences, Da-Yeh University, Changhua, Taiwan
| | - Pin-Yu Chen
- Department of Earth and Life Science, University of Taipei, Taipei, Taiwan
| | - Shu-Ping Wu
- Department of Earth and Life Science, University of Taipei, Taipei, Taiwan
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25
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Bar-Sela G, Cohen I, Avisar A, Loven D, Aharon A. Circulating blood extracellular vesicles as a tool to assess endothelial injury and chemotherapy toxicity in adjuvant cancer patients. PLoS One 2020; 15:e0240994. [PMID: 33108394 PMCID: PMC7591065 DOI: 10.1371/journal.pone.0240994] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 10/06/2020] [Indexed: 01/08/2023] Open
Abstract
Extracellular vesicles (EVs) are subcellular membrane blebs that include exosomes and microparticles, which represent a potential source for cancer biomarker discovery. We assess EVs characteristics as a tool to evaluate the endothelial and anti-tumor treatment injury during adjuvant chemotherapy in breast (BC) and colon cancer (CC) patients. Blood samples were taken from 29 BC and 25 CC patients before and after chemotherapy, as well as from healthy control donors (HC). Circulating blood EVs were isolated and characterized by size/concentration, membrane antigens for cell origin, thrombogenicity, and protein content. We observed higher EVs concentration and particle size in CC patients after chemotherapy compared with HC. Higher levels of endothelial EVs (CD144-positive) and vascular endothelial growth factor receptor 1 (VEGFR1), apparently as an indication of endothelial dysfunction, were found in all cancer patients, regardless of a given treatment, compared to HC. Levels of EVs labeled CD62E, CD34+41-, the lymphocyte markers CD11+ and CD-14+, Annexin-V, and the coagulation proteins TF and TFPI, however, sometimes demonstrate significant differences between patients, although HC did not show significant differences between patients pre- and post-chemotherapy. Most importantly, increasing levels of EVs encapsulated Angiostatin were found in patients with CC, while chemotherapy treatment leads to its notable rise in circulating blood EVs. Our results demonstrate the potential of EVs encapsulated Angiostatin as a tool to evaluate endothelial damage during adjuvant chemotherapy in BC and CC patients.
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Affiliation(s)
- Gil Bar-Sela
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Cancer Center, Emek Medical Center, Afula, Israel
| | - Idan Cohen
- Cancer Center, Emek Medical Center, Afula, Israel
| | | | - David Loven
- Cancer Center, Emek Medical Center, Afula, Israel
| | - Anat Aharon
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Hematology and Bone Marrow Transplantation, Sourasky Medical Center, Tel Aviv, Israel
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Cellular Mechanisms of Circulating Tumor Cells During Breast Cancer Metastasis. Int J Mol Sci 2020; 21:ijms21145040. [PMID: 32708855 PMCID: PMC7404335 DOI: 10.3390/ijms21145040] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 12/14/2022] Open
Abstract
Circulating tumor cells (CTCs) are cancer cells that detach from the primary site and travel in the blood stream. A higher number of CTCs increases the risk of breast cancer metastasis, and it is inversely associated with the survival rates of patients with breast cancer. Although the numbers of CTCs are generally low and the majority of CTCs die in circulation, the survival of a few CTCs can seed the development of a tumor at a secondary location. An increasing number of studies demonstrate that CTCs undergo modification in response to the dynamic biophysical environment in the blood due in part to fluid shear stress. Fluid shear stress generates reactive oxygen species (ROS), triggers redox-sensitive cell signaling, and alters the function of intracellular organelles. In particular, the mitochondrion is an important target organelle in determining the metastatic phenotype of CTCs. In healthy cells, mitochondria produce adenosine triphosphate (ATP) via oxidative phosphorylation in the electron transport chain, and during oxidative phosphorylation, they produce physiological levels of ROS. Mitochondria also govern death mechanisms such as apoptosis and mitochondrial permeability transition pore opening to, in order eliminate unwanted or damaged cells. However, in cancer cells, mitochondria are dysregulated, causing aberrant energy metabolism, redox homeostasis, and cell death pathways that may favor cancer invasiveness. In this review, we discuss the influence of fluid shear stress on CTCs with an emphasis on breast cancer pathology, then discuss alterations of cellular mechanisms that may increase the metastatic potentials of CTCs.
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Lin HC, Chu LJ, Huang PJ, Cheng WH, Zheng YH, Huang CY, Hong SW, Chen LC, Lin HA, Wang JY, Chen RM, Lin WN, Tang P, Huang KY. Proteomic signatures of metronidazole-resistant Trichomonas vaginalis reveal novel proteins associated with drug resistance. Parasit Vectors 2020; 13:274. [PMID: 32487244 PMCID: PMC7268490 DOI: 10.1186/s13071-020-04148-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/25/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Trichomoniasis is the most common non-viral sexually transmitted disease caused by the protozoan parasite Trichomonas vaginalis. Metronidazole (MTZ) is a widely used drug for the treatment of trichomoniasis; however, increased resistance of the parasite to MTZ has emerged as a highly problematic public health issue. METHODS We conducted iTRAQ-based analysis to profile the proteomes of MTZ-sensitive (MTZ-S) and MTZ-resistant (MTZ-R) parasites. STRING and gene set enrichment analysis (GESA) were utilized to explore the protein-protein interaction networks and enriched pathways of the differentially expressed proteins, respectively. Proteins potentially related to MTZ resistance were selected for functional validation. RESULTS A total of 3123 proteins were identified from the MTZ-S and MTZ-R proteomes in response to drug treatment. Among the identified proteins, 304 proteins were differentially expressed in the MTZ-R proteome, including 228 upregulated and 76 downregulated proteins. GSEA showed that the amino acid-related metabolism, including arginine, proline, alanine, aspartate, and glutamate are the most upregulated pathways in the MTZ-R proteome, whereas oxidative phosphorylation is the most downregulated pathway. Ten proteins categorized into the gene set of oxidative phosphorylation were ATP synthase subunit-related proteins. Drug resistance was further examined in MTZ-S parasites pretreated with the ATP synthase inhibitors oligomycin and bafilomycin A1, showing enhanced MTZ resistance and potential roles of ATP synthase in drug susceptibility. CONCLUSIONS We provide novel insights into previously unidentified proteins associated with MTZ resistance, paving the way for future development of new drugs against MTZ-refractory trichomoniasis.
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Affiliation(s)
- Hsin-Chung Lin
- Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Lichieh Julie Chu
- Molecular Medicine Research Center, Chang Gung University, Taoyuan City, 333, Taiwan.,Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan City, 333, Taiwan
| | - Po-Jung Huang
- Department of Biomedical Sciences, Chang Gung University, Taoyuan City, 333, Taiwan.,Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taoyuan City, 333, Taiwan
| | - Wei-Hung Cheng
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan City, 333, Taiwan
| | - Yu-Hsing Zheng
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Ching-Yun Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Shu-Wen Hong
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Lih-Chyang Chen
- Department of Medicine, Mackay Medical College, New Taipei City, 252, Taiwan
| | - Hsin-An Lin
- Division of Infection, Department of Medicine, Tri-Service General Hospital SongShan Branch, Taipei City, 105, Taiwan
| | - Jui-Yang Wang
- Division of Family Medicine, Tri-Service General Hospital Songshan Branch, Taipei City, 105, Taiwan
| | - Ruei-Min Chen
- Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei City, 114, Taiwan
| | - Wei-Ning Lin
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City, 242, Taiwan
| | - Petrus Tang
- Molecular Regulation and Bioinformatics Laboratory, Department of Parasitology, College of Medicine, Chang Gung University, Taoyuan City, 333, Taiwan
| | - Kuo-Yang Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei City, 114, Taiwan.
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Diosdado A, Simón F, Morchón R, González-Miguel J. Pro-fibrinolytic potential of the third larval stage of Ascaris suum as a possible mechanism facilitating its migration through the host tissues. Parasit Vectors 2020; 13:203. [PMID: 32312291 PMCID: PMC7169012 DOI: 10.1186/s13071-020-04067-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 04/09/2020] [Indexed: 12/24/2022] Open
Abstract
Background Ascaris roundworms are the parasitic nematodes responsible for causing human and porcine ascariasis. Whereas A. lumbricoides is the most common soil-transmitted helminth infecting humans in the world, A. suum causes important economic losses in the porcine industry. The latter has been proposed as a model for the study of A. lumbricoides since both species are closely related. The third larval stage of these parasites carries out an intriguing and complex hepatopulmonary route through the bloodstream of its hosts. This allows the interaction between larvae and the physiological mechanisms of the hosts circulatory system, such as the fibrinolytic system. Parasite migration has been widely linked to the activation of this system by pathogens that are able to bind plasminogen and enhance plasmin generation. Therefore, the aim of this study was to examine the interaction between the infective third larval stage of A. suum and the host fibrinolytic system as a model of the host-Ascaris spp. relationships. Methods Infective larvae were obtained after incubating and hatching fertile eggs of A. suum in order to extract their cuticle and excretory/secretory antigens. The ability of both extracts to bind and activate plasminogen, as well as promote plasmin generation were assayed by ELISA and western blot. The location of plasminogen binding on the larval surface was revealed by immunofluorescence. The plasminogen-binding proteins from both antigenic extracts were revealed by two-dimensional electrophoresis and plasminogen-ligand blotting, and identified by mass spectrometry. Results Cuticle and excretory/secretory antigens from infective larvae of A. suum were able to bind plasminogen and promote plasmin generation in the presence of plasminogen activators. Plasminogen binding was located on the larval surface. Twelve plasminogen-binding proteins were identified in both antigenic extracts. Conclusions To the best of our knowledge, the present results showed for the first time, the pro-fibrinolytic potential of infective larvae of Ascaris spp., which suggests a novel parasite survival mechanism by facilitating the migration through host tissues.![]()
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Affiliation(s)
- Alicia Diosdado
- Laboratory of Parasitology, Faculty of Pharmacy, University of Salamanca, C/Licenciado Méndez Nieto s/n, 37007, Salamanca, Spain
| | - Fernando Simón
- Laboratory of Parasitology, Faculty of Pharmacy, University of Salamanca, C/Licenciado Méndez Nieto s/n, 37007, Salamanca, Spain.
| | - Rodrigo Morchón
- Laboratory of Parasitology, Faculty of Pharmacy, University of Salamanca, C/Licenciado Méndez Nieto s/n, 37007, Salamanca, Spain
| | - Javier González-Miguel
- Laboratory of Parasitology, Institute of Natural Resources and Agrobiology of Salamanca (IRNASA-CSIC), C/Cordel de Merinas 40-52, 37008, Salamanca, Spain.,Martsinovsky Institute of Medical Parasitology, Tropical and Vector Borne Diseases, Sechenov University, Malaya Pirogovskaya St. 20-1, Moscow, 119435, Russia
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Zhu B, Feng Z, Guo Y, Zhang T, Mai A, Kang Z, Weijen T, Wang D, Yin D, Zhu D, Gao J. F0F1 ATP synthase regulates extracellular calcium influx in human neutrophils by interacting with Ca v2.3 and modulates neutrophil accumulation in the lipopolysaccharide-challenged lung. Cell Commun Signal 2020; 18:19. [PMID: 32019549 PMCID: PMC7001235 DOI: 10.1186/s12964-020-0515-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 01/17/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Neutrophils form the first line of innate host defense against invading microorganisms. We previously showed that F0F1 ATP synthase (F-ATPase), which is widely known as mitochondrial respiratory chain complex V, is expressed in the plasma membrane of human neutrophils and is involved in regulating cell migration. Whether F-ATPase performs cellular functions through other pathways remains unknown. METHODS Blue native polyacrylamide gel electrophoresis followed by nano-ESI-LC MS/MS identification and bioinformatic analysis were used to identify protein complexes containing F-ATPase. Then, the identified protein complexes containing F-ATPase were verified by immunoblotting, immunofluorescence colocalization, immunoprecipitation, real-time RT-PCR and agarose gel electrophoresis. Immunoblotting, flow cytometry and a LPS-induced mouse lung injury model were used to assess the effects of the F-ATPase-containing protein complex in vitro and in vivo. RESULTS We found that the voltage-gated calcium channel (VGCC) α2δ-1 subunit is a binding partner of cell surface F-ATPase in human neutrophils. Further investigation found that the physical connection between the two proteins may exist between the F1 part (α and β subunits) of F-ATPase and the α2 part of VGCC α2δ-1. Real-time RT-PCR and PCR analyses showed that Cav2.3 (R-type) is the primary type of VGCC expressed in human neutrophils. Research on the F-ATPase/Cav2.3 functional complex indicated that it can regulate extracellular Ca2+ influx, thereby modulating ERK1/2 phosphorylation and reactive oxygen species production, which are typical features of neutrophil activation. In addition, the inhibition of F-ATPase can reduce neutrophil accumulation in the lungs of mice that were intratracheally instilled with lipopolysaccharide, suggesting that the inhibition of F-ATPase may prevent neutrophilic inflammation-induced tissue damage. CONCLUSIONS In this study, we identified a mechanism by which neutrophil activity is modulated, with simultaneous regulation of neutrophil-mediated pulmonary damage. These results show that surface F-ATPase of neutrophils is a potential innate immune therapeutic target.
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Affiliation(s)
- Baoyi Zhu
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
| | - Zhengfu Feng
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
| | - Yan Guo
- Clinical Laboratory of Dongcheng People’s Hospital, Dong guan, 523007 Guangdong China
| | - Tian Zhang
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
| | - Ai Mai
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
| | - Zhanfang Kang
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
| | - Ting Weijen
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, 40402 Taiwan
| | - Dai Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics of Xiamen University, Xiamen, 361102 Fujian China
| | - Dazhong Yin
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
| | - Dongxing Zhu
- Key Laboratory of Cardiovascular Diseases, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436 Guangdong China
| | - Jun Gao
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, 511518 Guangdong China
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30
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Zr-89 Immuno-PET Targeting Ectopic ATP Synthase Enables In-Vivo Imaging of Tumor Angiogenesis. Int J Mol Sci 2019; 20:ijms20163928. [PMID: 31412537 PMCID: PMC6720485 DOI: 10.3390/ijms20163928] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/07/2019] [Accepted: 08/12/2019] [Indexed: 12/23/2022] Open
Abstract
In this study, we synthesized a Zr-89-labeled anti-adenosine triphosphate synthase monoclonal antibody (ATPS mAb) for applications in immuno-positron emission tomography (PET) and evaluated its feasibility for angiogenesis imaging. The cellular uptake of Zr-89 ATPS mAb was measured after treatment of cancer cell lines in vitro, and its biodistribution was evaluated at 4, 24 and 48 h in vivo in mice bearing xenografts. PET images were acquired at 4, 24, 48, and 96 h after Zr-89 ATPS mAb administration. Tumor angiogenesis was analyzed using anti-CD31 immunofluorescence staining. The cellular uptake of Zr-89 ATPS mAb increased over time in MDA-MB-231 breast cancer cells but did not increase in PC3 prostate cancer cells. The tumor uptake of Zr-89 ATPS mAb at 24 h was 9.4 ± 0.9% ID/g for MDA-Mb-231 cells and was 3.8 ± 0.6% ID/g for PC3 cells (p = 0.004). Zr-89 ATPS mAb uptake in MDA-MB-231 xenografts was inhibited by the administration of cold ATPS mAb (4.4 ± 0.5% ID/g, p = 0.011). Zr-89 ATPS mAb uptake could be visualized by PET for up to 96 h in MDA-MB-231 tumors. In contrast, there was no distinct tumor uptake detected by PET in the PC3 xenograft model. CD31-positive tumor vessels were abundant in MDA-MB-231 tumors, whereas they were scarcely detected in PC3 tumors. In conclusion, ATPS mAb was successfully labeled with Zr-89, which could be used for immuno-PET imaging targeting tumor angiogenesis.
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Cunningham BW, Seiber B, Riggleman JR, Van Horn MR, Bhat A. An investigational study of a dual-layer, chorion-free amnion patch as a protective barrier following lumbar laminectomy in a sheep model. J Tissue Eng Regen Med 2019; 13:1664-1671. [PMID: 31243876 DOI: 10.1002/term.2920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 05/17/2019] [Accepted: 05/20/2019] [Indexed: 01/15/2023]
Abstract
The inherent properties of the human amniotic membrane (HAM) suggest its potential for use as a physical barrier during surgery to protect neural elements and vessels from the surrounding environment. The objective of this study was to evaluate the effect of a dual-layer, chorion-free amnion patch (DLAM; ViaShield®, Globus Medical Inc., Audubon, PA, USA) processed from HAM as a protective barrier following lumbar laminectomy in a sheep model. A multiplex immunoassay was performed to quantify the inherent cytokines present in the amnion after processing. Twelve skeletally mature female crossbred Suffolk sheep were randomly divided into two equal post-operative periods (4 and 10 weeks). Each sheep underwent a laminectomy at L3 and L5, and one of the surgical sites randomly received the DLAM treatment. At each postsurgical time point, the extent of epidural fibrosis and neurohistopathological responses at the laminectomy sites was assessed based on epidural fibrosis-dura tenacity scores and decalcified histology, respectively. Immunoassay results showed that inflammatory mediators and immunomodulatory cytokines were present in the amnion after processing, but no proangiogenic cytokines were detected. At 10 weeks, tissue tenacity was significantly less in the DLAM treatment group when compared with the operative control (1.2 ± 0.4 vs. 2.8 ± 0.4, p < 0.05), demonstrating the ability of DLAM to act as a barrier and cover the dura. Gross observations showed fewer fibroblasts in the DLAM group in comparison with the control at both post-operative time points. Fibroblast infiltration analysis indicated that at both 4 and 10 weeks, there were significantly more infiltrated fibroblasts in the operative control sites than in the DLAM-treated sites, expressed as a percentage of the total number of fibroblasts present (4 weeks: 72.3 ± 10.2% vs. 10.8 ± 10.1%, p < .05; 10 weeks: 84.9 ± 15.8% vs. 43.1 ± 11.6%, p < .05). Additionally, fibroblasts travelled further into the dura in the operative control group compared with the DLAM-treated group at both time points. In conclusion, this study found that DLAM reduced fibroblast infiltration and tissue tenacity following lumbar laminectomy in a sheep animal model. These findings support the potential use of DLAM in clinical practice as a protective barrier for neural elements and anterior vessels.
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Affiliation(s)
- Bryan W Cunningham
- Musculoskeletal Research Center, Department of Orthopaedic Surgery, MedStar Union Memorial Hospital, Baltimore, MD, USA
| | - Breanna Seiber
- Product Development, Globus Medical Inc., Audubon, PA, USA
| | - Jessica R Riggleman
- Musculoskeletal Education and Research Center, Globus Medical Inc., Audubon, PA, USA
| | - Margaret R Van Horn
- Musculoskeletal Education and Research Center, Globus Medical Inc., Audubon, PA, USA
| | - Archana Bhat
- Product Development, Globus Medical Inc., Audubon, PA, USA
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Xue L, Shuyan T, Xiaoli L, Zilong L, Qiuling F, Lining W, Yanqiu L, Li Y. Glomerular Proteomic Profiles in the NZB/W F1 Hybrid Mouse Model of Lupus Nephritis. Med Sci Monit 2019; 25:2122-2131. [PMID: 30900683 PMCID: PMC6698093 DOI: 10.12659/msm.914365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background Lupus nephritis is one of the most serious complications of systemic lupus erythematosus (SLE) and is associated with patient mortality. This study aimed to investigate the proteomic profiles of the glomerulus in the NZB/W F1 hybrid mouse model of mild and severe lupus nephritis using two-dimensional fluorescence difference gel electrophoresis (2D-DIGE) combined with matrix-assisted laser desorption time-of-flight mass spectrometry (MALDI-TOF-MS). Material/Methods Female NZB/WF1 mice (n=60) at 28 weeks of age were divided into the mild proteinuria group (+1), the moderate proteinuria group (+2), and the severe proteinuria group (+3) using paper strip urine testing, and then later divided into a mild (≤1+) and severe (≥3+) proteinuria group to allow comparison of upregulation and down-regulation of proteins between the two groups. Renal glomeruli were isolated following renal perfusion with magnetic beads. Protein expression was determined by Western blot, immunohistochemistry, 2D-DIGE, and MALDI-TOF-MS. Results A total of 56 differentially expressed proteins were identified from 133 protein spots, of which 18 were upregulated and 23 were down-regulated between groups 1 and 2. Expression of the proteins Ras-related GTP-binding protein B (RRAGB), serine/threonine-protein kinase 1 (SMG1), angiopoietin 2 (ANGP2), methylmalonate semialdehyde (MMSA), and ATP beta chain (ATPB) were identified by Western blot and SMG1, ANGP2, and MMSA were identified by immunohistochemistry. Conclusions In a mouse model of lupus nephritis, expression of SMG1, MMSA, and ATPB were down-regulated, and RRAGB and ANGP2 were upregulated.
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Affiliation(s)
- Liu Xue
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Tian Shuyan
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Li Xiaoli
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Li Zilong
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Fan Qiuling
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Wang Lining
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Li Yanqiu
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
| | - Yao Li
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, Liaoning, China (mainland)
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Neupane P, Bhuju S, Thapa N, Bhattarai HK. ATP Synthase: Structure, Function and Inhibition. Biomol Concepts 2019; 10:1-10. [PMID: 30888962 DOI: 10.1515/bmc-2019-0001] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 12/20/2022] Open
Abstract
Oxidative phosphorylation is carried out by five complexes, which are the sites for electron transport and ATP synthesis. Among those, Complex V (also known as the F1F0 ATP Synthase or ATPase) is responsible for the generation of ATP through phosphorylation of ADP by using electrochemical energy generated by proton gradient across the inner membrane of mitochondria. A multi subunit structure that works like a pump functions along the proton gradient across the membranes which not only results in ATP synthesis and breakdown, but also facilitates electron transport. Since ATP is the major energy currency in all living cells, its synthesis and function have widely been studied over the last few decades uncovering several aspects of ATP synthase. This review intends to summarize the structure, function and inhibition of the ATP synthase.
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Affiliation(s)
| | - Sudina Bhuju
- Department of Biotechnology, Kathmandu University Dhulikhel, Nepal India
| | - Nita Thapa
- Department of Biotechnology, Kathmandu University Dhulikhel, Nepal India
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Shichiri M, Nonaka D, Lee LJ, Tanaka K. Identification of the salusin-β receptor using proteoliposomes embedded with endogenous membrane proteins. Sci Rep 2018; 8:17865. [PMID: 30552345 PMCID: PMC6294790 DOI: 10.1038/s41598-018-35740-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 10/31/2018] [Indexed: 01/02/2023] Open
Abstract
Although orphan G protein-coupled receptors (GPCRs) have been used as targets to discover unidentified natural ligands, increasing numbers of non-GPCRs have been found to mediate important biological functions. Bioinformatics of genome and cDNA resources predict putative bioactive peptides, demanding an alternative approach to efficiently unravel cell surface targets. In silico analysis of a full-length cDNA library previously allowed us to identify salusin-β, a parasympathomimetic/pro-atherosclerotic peptide with unique physicochemical properties. Here, we show that the β-chain of ATP synthase is a cell surface receptor for salusin-β by utilizing artificial liposomes embedded with endogenous membrane proteins directly transferred from animal tissues while retaining the ligand-binding capability. Conventional techniques using detergents identified a β-actin-profilin complex as membrane-associated salusin-β-binding proteins, but failed to identify the cell surface receptor. Since the α-chain of ATP synthase is a principal cell surface target for angiostatin, a potent endogenous angiogenesis inhibitor, we investigated whether salusin-β modulates angiogenesis. Salusin-β inhibited cell surface ATP synthase activity and prevented sarcoma cell-induced angiogenesis in an in vivo mouse air sac model. Therefore, salusin-β binds to membrane-bound ATP synthase and acts as an angiogenesis inhibitor. The current methodology allows the identification of novel cell surface targets, irrespective of the receptor structure.
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Affiliation(s)
- Masayoshi Shichiri
- Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0374, Japan.
| | - Daisuke Nonaka
- Protosera Inc., 4-3-22 Nishinakajima, Yodogawa-ku, Osaka, 532-0011, Japan
| | - Lyang-Ja Lee
- Protosera Inc., 4-3-22 Nishinakajima, Yodogawa-ku, Osaka, 532-0011, Japan
| | - Kenji Tanaka
- Protosera Inc., 4-3-22 Nishinakajima, Yodogawa-ku, Osaka, 532-0011, Japan
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Park BN, Lee SJ, Roh JH, Lee KH, An YS, Yoon JK. Radiolabeled Anti-Adenosine Triphosphate Synthase Monoclonal Antibody as a Theragnostic Agent Targeting Angiogenesis. Mol Imaging 2018; 16:1536012117737399. [PMID: 29239276 PMCID: PMC5734570 DOI: 10.1177/1536012117737399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION The potential of a radioiodine-labeled, anti-adenosine triphosphate synthase monoclonal antibody (ATPS mAb) as a theragnostic agent for simultaneous cancer imaging and treatment was evaluated. METHODS Adenosine triphosphate synthase monoclonal antibody was labeled with radioiodine, then radiotracer uptake was measured in 6 different cancer cell lines. In vivo biodistribution was evaluated 24 and 48 hours after intravenous injection of 125I-ATPS mAb into MKN-45 tumor-bearing mice (n = 3). For radioimmunotherapy, 18.5 MBq 131I-ATPS mAb (n = 7), isotype immunoglobulin G (IgG) (n = 6), and vehicle (n = 6) were injected into MKN-45 tumor-bearing mice for 4 weeks, and tumor volume and percentage of tumor growth inhibition (TGI) were compared each week. RESULTS MKN-45 cells showed the highest in vitro cellular binding after 4 hours (0.00324 ± 0.00013%/μg), which was significantly inhibited by unlabeled ATPS mAb at concentrations of greater than 0.4 μM. The in vitro retention rate of 125I-ATPS mAb in MKN-45 cells was 64.1% ± 1.0% at 60 minutes. The highest tumor uptake of 125I-ATPS mAb in MKN-45 tumor-bearing mice was achieved 24 hours after injection (6.26% ± 0.47% injected dose [ID]/g), whereas tumor to muscle and tumor to blood ratios peaked at 48 hours. The 24-hour tumor uptake decreased to 3.43% ± 0.85% ID/g by blocking with unlabeled ATPS mAb. After 4 weeks of treatment, mice receiving 131I-ATPS mAb had significantly smaller tumors (679.4 ± 232.3 mm3) compared with control (1687.6 ± 420.4 mm3, P = .0431) and IgG-treated mice (2870.2 ± 484.1 mm3, P = .0010). The percentage of TGI of 131I-ATPS mAb was greater than 50% during the entire study period (range: 53.7%-75.9%). CONCLUSION The specific binding and antitumor effects of radioiodinated ATPS mAb were confirmed in in vitro and in vivo models of stomach cancer.
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Affiliation(s)
- Bok-Nam Park
- 1 Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Suwon, South Korea
| | - Su Jin Lee
- 1 Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Suwon, South Korea
| | - Jung Hyun Roh
- 1 Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Suwon, South Korea
| | - Kyung-Han Lee
- 2 Department of Nuclear Medicine and Molecular Imaging, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Young-Sil An
- 1 Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Suwon, South Korea
| | - Joon-Kee Yoon
- 1 Department of Nuclear Medicine and Molecular Imaging, Ajou University School of Medicine, Suwon, South Korea
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Loso J, Lund N, Avanesov M, Muschol N, Lezius S, Cordts K, Schwedhelm E, Patten M. Serum Biomarkers of Endothelial Dysfunction in Fabry Associated Cardiomyopathy. Front Cardiovasc Med 2018; 5:108. [PMID: 30159316 PMCID: PMC6104487 DOI: 10.3389/fcvm.2018.00108] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 07/17/2018] [Indexed: 12/13/2022] Open
Abstract
Background: Fabry disease (FD) is characterized by early development of vasculopathy and endothelial dysfunction. However, it is unclear whether these findings also play a pivotal role in cardiac manifestation. As Fabry cardiomyopathy (FC) is the leading cause of death in FD, we aimed to gather a better insight in pathological mechanisms of the disease. Methods: Serum samples were obtained from 17 healthy controls, 15 FD patients with and 7 without FC. FC was defined by LV wall thickening of >12 mm in cardiac magnetic resonance imaging and serum level of proBNP, high sensitive Troponin T (hsT), and globotriaosylsphingosine (lyso-GB3) were obtained. A multiplex ELISA-Assay for 23 different angiogenesis markers was performed in pooled samples. Markers showing significant differences among groups were further analyzed in single samples using specific Elisa antibody assays. L-homoarginine (hArg), L-arginine, asymmetric (ADMA), and symmetric Dimethylarginine (SDMA) were quantified by liquid chromatography—mass spectrometry. Results: Angiostatin and matrix metalloproteinase 9 (MMP-9) were elevated in FD patients compared to controls independently of the presence of FC (angiostatin: 98 ± 25 vs. 75 ± 15 ng/mL; p = 0.001; MMP-9: 8.0 ± 3.4 vs. 5.0 ± 2.4 μg/mL; p = 0.002). SDMA concentrations were highest in patients with FC (0.90 ± 0.64 μmol/l) compared to patients without (0.57 ± 0.10 μmol/l; p = 0.027) and vs. controls (0.58 ± 0.12 μmol/l; p = 0.006) and was positively correlated with indexed LV-mass (r = 0.61; p = 0.003), hsT (r = 0.56, p = 0.008), and lyso-Gb3 (r = 0.53, p = 0.013). Accordingly, the ratio of L-homoarginine to SDMA (hArg/SDMA) was lowest in patients with FC (2.63 ± 1.78) compared to controls (4.16 ± 1.44; p = 0.005). For L-arginine, hArg and ADMA no significant differences among groups could be detected, although a trend toward higher ADMA and lower hArg levels could be observed in the FC group. Furthermore, a significant relationship between kidney and cardiac function could be revealed (p = 0.045). Conclusion: Elevated MMP-9 and angiostatin levels suggest an increased extracellular matrix turnover in FD patients. Furthermore, endothelial dysfunction may also be involved in FC, as SDMA and hArg/SDMA are altered in these patients.
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Affiliation(s)
- Jefferson Loso
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - Natalie Lund
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - Maxim Avanesov
- Department of Diagnostic and Interventional Radiology, University Medical Center Hamburg- Eppendorf, Hamburg, Germany
| | - Nicole Muschol
- Department of Pediatrics, University Medical Center Hamburg- Eppendorf, Hamburg, Germany
| | - Susanne Lezius
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg- Eppendorf, Hamburg, Germany
| | - Kathrin Cordts
- Department of Experimental Pharmacology and Toxicology, University Medical Center Hamburg- Eppendorf, Hamburg, Germany.,DZHK (German Center for Cardiovascular Research e.V.), Hamburg, Germany
| | - Edzard Schwedhelm
- Department of Experimental Pharmacology and Toxicology, University Medical Center Hamburg- Eppendorf, Hamburg, Germany.,DZHK (German Center for Cardiovascular Research e.V.), Hamburg, Germany
| | - Monica Patten
- Department of General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany.,DZHK (German Center for Cardiovascular Research e.V.), Hamburg, Germany
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Torrecilla J, Del Pozo-Rodríguez A, Vicente-Pascual M, Solinís MÁ, Rodríguez-Gascón A. Targeting corneal inflammation by gene therapy: Emerging strategies for keratitis. Exp Eye Res 2018; 176:130-140. [PMID: 29981344 DOI: 10.1016/j.exer.2018.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/14/2018] [Accepted: 07/03/2018] [Indexed: 02/07/2023]
Abstract
Inflammation is the underlying process of several diseases within the eye, specifically in the cornea. Current treatment options for corneal inflammation or keratitis, and related neovascularization, are restricted by limited efficacy, adverse effects, and short duration of action. Gene therapy has shown great potential for the treatment of diseases affecting the ocular surface, and major efforts are being targeted to inflammatory mediators and neovascularization, in order to develop potential treatments for corneal inflammation. Gene therapy to treat ocular disorders is still starting, and current therapies are primarily experimental, with most human clinical trials still in research state, although some of them have already shown encouraging results. In this review, we focus on the progress and challenges of gene therapy to treat corneal inflammation. After introducing the inflammation process, we present the main nucleic acid delivery systems, including viral and non-viral vectors, and the most studied strategies to address the therapy: control of neovascularization and regulation of pro- and anti-inflammatory cytokines.
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Affiliation(s)
- Josune Torrecilla
- Pharmacokinetic, Nanotechnology and Gene Therapy Group (PharmaNanoGene), Faculty of Pharmacy, Centro de investigación Lascaray ikergunea, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz, Spain
| | - Ana Del Pozo-Rodríguez
- Pharmacokinetic, Nanotechnology and Gene Therapy Group (PharmaNanoGene), Faculty of Pharmacy, Centro de investigación Lascaray ikergunea, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz, Spain
| | - Mónica Vicente-Pascual
- Pharmacokinetic, Nanotechnology and Gene Therapy Group (PharmaNanoGene), Faculty of Pharmacy, Centro de investigación Lascaray ikergunea, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz, Spain
| | - María Ángeles Solinís
- Pharmacokinetic, Nanotechnology and Gene Therapy Group (PharmaNanoGene), Faculty of Pharmacy, Centro de investigación Lascaray ikergunea, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz, Spain
| | - Alicia Rodríguez-Gascón
- Pharmacokinetic, Nanotechnology and Gene Therapy Group (PharmaNanoGene), Faculty of Pharmacy, Centro de investigación Lascaray ikergunea, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz, Spain.
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Osanai T, Tanaka M, Mikami K, Kitajima M, Magota K, Tomita H, Okumura K. Mitochondrial inhibitory factor protein 1 attenuates coupling factor 6-induced aging signal. J Cell Biochem 2018; 119:6194-6203. [PMID: 29575130 DOI: 10.1002/jcb.26828] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 02/28/2018] [Indexed: 12/16/2022]
Abstract
Coupling factor 6 (CF6) forces a counter-clockwise rotation of plasma membrane F1 Fo complex, resulting in proton import and accelerated aging. Inhibitory factor peptide 1 (IF1) suppresses a unidirectional counter-clockwise rotation of F1 Fo complex without affecting ATP synthesis. We tested the hypothesis that IF1 may attenuate CF6-induced aging signaling in CF6-overexpressing transgenic (TG) cells. In IF1-GFP overexpressing wild type (WT) cells, the diffuse peripheral staining of tubular mitochondria was observed with a dense widely distributed network around the nucleus. In TG cells, however, the only peri-nuclear network of fragmented mitochondria was observed at 24 h, but it was developed to a widely distributed mitochondrial network of tubular mitochondria at 72 h. TG cells displayed aging hallmarks of telomere attrition, epigenetic alterations, defective proteostasis, and genomic instability with a decrease in emerin and lamin and loss of heterochromatin. IF1 induction rescued TG cells from telomere attrition, expression of genomic instability with the increase in emerin and lamin, and that of epigenetic alterations with recovery of heterochromatin. In defective proteostasis, IF1 induction restored a potent peri-nuclear staining of autolysosomes compared with the baseline weak staining. The decrease in Atg7 was restored, whereas the increase in P62 was abolished. We conclude that genetic disruption of proton signals by IF1 induction suppressed CF6-induced expression of aging hallmarks such as telomere attrition, epigenetic alterations, defective proteostasis, and genomic instability. Given the widespread biological actions of CF6, the physiological and pathological actions of IF1 may be complex.
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Affiliation(s)
- Tomohiro Osanai
- Department of Nursing Science, Hirosaki University Graduate School of Health Science, Hirosaki, Japan
| | - Makoto Tanaka
- Department of Hypertension and Stroke Internal Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Kasumi Mikami
- Department of Nursing Science, Hirosaki University Graduate School of Health Science, Hirosaki, Japan
| | - Maiko Kitajima
- Department of Nursing Science, Hirosaki University Graduate School of Health Science, Hirosaki, Japan
| | - Koji Magota
- Daiichi Sankyo Co., Ltd., Biologics Technology Research Laboratories Group1, Pharmaceutical Technology Division, 2716-1, Kurakake, Akaiwa, Chiyoda-machi, Oura-gun, Gunma, Japan
| | - Hirofumi Tomita
- Department of Cardiology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Ken Okumura
- Division of Cardiology, Saiseikai Kumamoto Hospital, Kumamoto, Japan
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Extracellular anti-angiogenic proteins augment an endosomal protein trafficking pathway to reach mitochondria and execute apoptosis in HUVECs. Cell Death Differ 2018. [PMID: 29523874 PMCID: PMC6219483 DOI: 10.1038/s41418-018-0092-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Classic endocytosis destinations include the recycling endosome returning to the plasma membrane or the late endosome (LE) merging with lysosomes for cargo degradation. However, the anti-angiogenic proteins angiostatin and isthmin, are endocytosed and trafficked to mitochondria (Mito) to execute apoptosis of endothelial cells. How these extracellular proteins reach mitochondria remains a mystery. Through confocal and super-resolution fluorescent microscopy, we demonstrate that angiostatin and isthmin are trafficked to mitochondria through the interaction between LE and Mito. Using purified organelles, the LE–Mito interaction is confirmed through in vitro lipid-fusion assay, as well as single vesicle total internal reflection fluorescent microscopy. LE–Mito interaction enables the transfer of not only lipids but also proteins from LE to Mito. Angiostatin and isthmin augment this endosomal protein trafficking pathway and make use of it to reach mitochondria to execute apoptosis. Cell fractionation and biochemical analysis identified that the cytosolic scaffold protein Na+/H+ exchanger regulatory factor 1 (NHERF1) associated with LE and the t-SNARE protein synaptosome-associated protein 25 kDa (SNAP25) associated with Mito form an interaction complex to facilitate LE–Mito interaction. Proximity ligation assay coupled with fluorescent microscopy showed that both NHERF1 and SNAP25 are located at the contacting face between LE and Mito. RNAi knockdown of either NHERF1 or SNAP25 suppressed not only the mitochondrial trafficking of angiostatin and isthmin but also their anti-angiogenic and pro-apoptotic functions. Hence, this study reveals a previously unrealized endosomal protein trafficking pathway from LE to Mito that allows extracellular proteins to reach mitochondria and execute apoptosis.
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Taurino F, Gnoni A. Systematic review of plasma-membrane ecto-ATP synthase: A new player in health and disease. Exp Mol Pathol 2018; 104:59-70. [DOI: 10.1016/j.yexmp.2017.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/15/2017] [Accepted: 12/31/2017] [Indexed: 02/07/2023]
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Circulating angiostatin serum level in patients with systemic sclerosis. Postepy Dermatol Alergol 2017; 34:543-546. [PMID: 29422818 PMCID: PMC5799757 DOI: 10.5114/ada.2017.72459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 11/08/2016] [Indexed: 11/28/2022] Open
Abstract
Introduction Systemic sclerosis (SSc) is achronic connective tissue disease characterized by microangiopathy with inadequate angiogenesis. Angiostatin (AS) is a potent antiangiogenic factor specifically inhibiting proliferation and inducing apoptosis of vascular endothelial cells. Aim To evaluate the level of angiostatin in the serum of patients with SSc. Material and methods Serum levels of AS were measured in 20 SSc patients and 12 healthy controls. Results A statistically significant difference in the serum levels of AS in SSc patients was observed compared to the control group (636.51 vs. 869.20 ng/ml; p = 0.012). Significant correlations between limited and disseminated SSc (lSSc/dSSc) were not found, however, a difference between lSSc and the control group was demonstrated (620.00 vs. 869.20 ng/ml; p = 0.011). The serum level of AS was not associated positively with organ changes caused by SSc. However, a statistically significant lower serum level of AS was observed in patients with SSc and no esophageal (p = 0.008) or pulmonary changes (p = 0.007) compared to the control group. Conclusions Our results reveal significant differences in AS level in SSc patients compared to the healthy controls, and suggest that a low level of AS may occur as a result of impaired angiogenesis.
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Ahmad Z, Hassan SS, Azim S. A Therapeutic Connection between Dietary Phytochemicals and ATP Synthase. Curr Med Chem 2017; 24:3894-3906. [PMID: 28831918 PMCID: PMC5738703 DOI: 10.2174/0929867324666170823125330] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 01/01/1970] [Accepted: 08/18/2017] [Indexed: 12/25/2022]
Abstract
For centuries, phytochemicals have been used to prevent and cure multiple health ailments. Phytochemicals have been reported to have antioxidant, antidiabetic, antitussive, antiparasitic, anticancer, and antimicrobial properties. Generally, the therapeutic use of phy-tochemicals is based on tradition or word of mouth with few evidence-based studies. Moreo-ver, molecular level interactions or molecular targets for the majority of phytochemicals are unknown. In recent years, antibiotic resistance by microbes has become a major healthcare concern. As such, the use of phytochemicals with antimicrobial properties has become perti-nent. Natural compounds from plants, vegetables, herbs, and spices with strong antimicrobial properties present an excellent opportunity for preventing and combating antibiotic resistant microbial infections. ATP synthase is the fundamental means of cellular energy. Inhibition of ATP synthase may deprive cells of required energy leading to cell death, and a variety of die-tary phytochemicals are known to inhibit ATP synthase. Structural modifications of phyto-chemicals have been shown to increase the inhibitory potency and extent of inhibition. Site-directed mutagenic analysis has elucidated the binding site(s) for some phytochemicals on ATP synthase. Amino acid variations in and around the phytochemical binding sites can re-sult in selective binding and inhibition of microbial ATP synthase. In this review, the therapeu-tic connection between dietary phytochemicals and ATP synthase is summarized based on the inhibition of ATP synthase by dietary phytochemicals. Research suggests selective target-ing of ATP synthase is a valuable alternative molecular level approach to combat antibiotic resistant microbial infections.
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Affiliation(s)
- Zulfiqar Ahmad
- Department of Biochemistry, Kirksville College of Osteopathic Medicine, A.T. Still University, Kirksville, Missouri 63501, USA
| | - Sherif S Hassan
- Department of Medical Education, California University of Sciences and Medicine, School of Medicine (Cal Med-SOM), Colton, California 92324, USA
| | - Sofiya Azim
- Department of Biochemistry, Kirksville College of Osteopathic Medicine, A.T. Still University, Kirksville, Missouri 63501, USA
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Lee H, Kim BW, Lee JW, Hong J, Lee JW, Kim HL, Lee JS, Ko YG. Extracellular reactive oxygen species are generated by a plasma membrane oxidative phosphorylation system. Free Radic Biol Med 2017; 112:504-514. [PMID: 28842348 DOI: 10.1016/j.freeradbiomed.2017.08.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 08/17/2017] [Accepted: 08/20/2017] [Indexed: 12/31/2022]
Abstract
Although the oxidative phosphorylation (OXPHOS) system has been found in mitochondria and the plasma membrane of various mammalian cell lines, understanding the physiological functions of the plasma membrane OXPHOS system is challenging. Here, we demonstrated that OXPHOS I, II, III, IV and V subunits were expressed in the plasma membrane of HepG2 cells and primary mouse hepatocytes, as determined by non-permeabilized immunofluorescence, total internal reflection fluorescence (TIRF) microscopy, cell surface-biotin labeling and plasma membrane and lipid raft isolation. Next, we demonstrated that NADH administration generated extracellular superoxide and improved insulin signaling in HepG2 cells and primary mouse hepatocytes. The NADH-dependent generation of extracellular superoxide was prevented by knockdown of NDUFV-1, the first subunit of OXPHOS I receiving electrons from NADH and the NADH-improved insulin signaling was abolished by extracellular catalase. Thus, we conclude that the OXPHOS system in the plasma membrane may be required for the generation of extracellular ROS and the regulation of insulin signaling.
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Affiliation(s)
- Hyun Lee
- Division of Life Sciences, Korea University, Seoul, Republic of Korea; Tunneling Nanotube Research Center, Korea University, Seoul, Republic of Korea
| | - Bong-Woo Kim
- Division of Life Sciences, Korea University, Seoul, Republic of Korea; Tunneling Nanotube Research Center, Korea University, Seoul, Republic of Korea
| | - Jung-Woo Lee
- Division of Life Sciences, Korea University, Seoul, Republic of Korea; Tunneling Nanotube Research Center, Korea University, Seoul, Republic of Korea
| | - Jin Hong
- Division of Life Sciences, Korea University, Seoul, Republic of Korea; Tunneling Nanotube Research Center, Korea University, Seoul, Republic of Korea
| | - Jung-Wha Lee
- Department of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hong-Lim Kim
- Integrative Research Support Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jae-Seon Lee
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Young-Gyu Ko
- Division of Life Sciences, Korea University, Seoul, Republic of Korea; Tunneling Nanotube Research Center, Korea University, Seoul, Republic of Korea.
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Chatzileontiadou DSM, Samiotaki M, Alexopoulou AN, Cotsiki M, Panayotou G, Stamatiadi M, Balatsos NAA, Leonidas DD, Kontou M. Proteomic Analysis of Human Angiogenin Interactions Reveals Cytoplasmic PCNA as a Putative Binding Partner. J Proteome Res 2017; 16:3606-3622. [PMID: 28777577 DOI: 10.1021/acs.jproteome.7b00335] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Human Angiogenin (hAng) is a member of the ribonuclease A superfamily and a potent inducer of neovascularization. Protein interactions of hAng in the nucleus and cytoplasm of the human umbilical vein cell line EA.hy926 have been investigated by mass spectroscopy. Data are available via ProteomeXchange with identifiers PXD006583 and PXD006584. The first gel-free analysis of hAng immunoprecipitates revealed many statistically significant potential hAng-interacting proteins involved in crucial biological pathways. Surprisingly, proliferating cell nuclear antigen (PCNA), was found to be immunoprecipitated with hAng only in the cytoplasm. The hAng-PCNA interaction and colocalization in the specific cellular compartment was validated with immunoprecipitation, immunoblotting, and immunocytochemistry. The results revealed that PCNA is predominantly localized in the cytoplasm, while hAng is distributed both in the nucleus and in the cytoplasm. hAng and PCNA colocalize in the cytoplasm, suggesting that they may interact in this compartment.
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Affiliation(s)
| | - Martina Samiotaki
- Biomedical Sciences Research Center "Alexander Fleming" , Vari 16672, Greece
| | | | - Marina Cotsiki
- Biomedical Sciences Research Center "Alexander Fleming" , Vari 16672, Greece
| | - George Panayotou
- Biomedical Sciences Research Center "Alexander Fleming" , Vari 16672, Greece
| | - Melina Stamatiadi
- Department of Biochemistry and Biotechnology, University of Thessaly , Biopolis, 41500 Larissa, Greece
| | - Nikolaos A A Balatsos
- Department of Biochemistry and Biotechnology, University of Thessaly , Biopolis, 41500 Larissa, Greece
| | - Demetres D Leonidas
- Department of Biochemistry and Biotechnology, University of Thessaly , Biopolis, 41500 Larissa, Greece
| | - Maria Kontou
- Department of Biochemistry and Biotechnology, University of Thessaly , Biopolis, 41500 Larissa, Greece
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Abstract
Background There is extraordinary interest in developing angiosuppressive agents for cancer treatment. Several new agents appear promising for the treatment of a variety of human cancers. Current concepts and new agents in clinical trials are the focus of this article. In particular, the introduction of a new treatment for human brain tumors is presented in detail, using an antiangiogenic agent, penicillamine, and depletion of an obligatory cofactor of angiogenesis, copper. Methods The explosive increase in literature on antiangiogenesis is reviewed using computerized search, findings presented at the recent national cancer and angiogenesis meetings. A specific protocol, NABTT 97-04, “Penicillamine and Copper Reduction for Newly Diagnosed Glioblastoma,” is presented as an example of angiotherapeutic drug discovery. Results A number of promising molecular approaches are being introduced to suppress tumor angiogenesis. Major categories of angiogenesis antagonists include protease inhibitors, direct inhibitors of endothelial cell proliferation and migration, suppression of angiogenic growth factors, inhibition of endothelial-specific integrin/survival signaling, chelators of copper, and inhibitors with specific other mechanisms. The preliminary results of early trials offer a glimpse into how antiangiogenesis therapy will be integrated into future care of the patient with cancer. Conclusions Thirty-five antiangiogenesis therapies are currently being evaluated in clinical trials. As we learn more about the fundamental mechanisms of angiogenesis, eg, the role of copper in growth factor activation, effective methods of cancer control will be implemented.
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Affiliation(s)
- Steven Brem
- Departments of Neurosurgery and Pharmacology of the University of South Florida, and the Neurooncology Program of the H. Lee Moffitt Cancer Center & Research Center, Tampa, FL
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Gao J, Zhang T, Kang Z, Ting W, Xu L, Yin D. The F0F1 ATP synthase regulates human neutrophil migration through cytoplasmic proton extrusion coupled with ATP generation. Mol Immunol 2017; 90:219-226. [PMID: 28843171 DOI: 10.1016/j.molimm.2017.08.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/07/2017] [Accepted: 08/13/2017] [Indexed: 12/24/2022]
Abstract
Cytoplasmic alkalinization and extracellular adenosine triphosphate (ATP) signals are required for migration of chemokineactivated neutrophils, but the precise functions remain unclear. In this work, the effect of the plasma membrane-expressed F0F1-ATP synthase (FATPase) on human neutrophils was examined. We found F-ATPase to be involved in cytoplasm proton extrusion and extracellular ATP generation. Oligomycin A, an F-ATPase inhibitor that blocks proton transfer, inhibited cytoplasmic alkalinization, extracellular ATP generation, adhesion and chemotaxis in N-formyl-Met-Leu-Phe (fMLP)-stimulated neutrophils; however, adenosine diphosphate (ADP), a substrate and activator of F-ATPase, had the opposite effect. Further analysis revealed that cell surface F-ATPase can translocate to the leading edge of directional fMLP-stimulated neutrophils toward ADP hydrolyzed from pannexin 1 channel-released ATP, followed by F-ATPase-catalyzed ATP regeneration using ADP and protons transferred from the cytoplasm. Therefore, the membrane-expressed F-ATPase regulates human neutrophil migration via cytoplasm proton extrusion and extracellular ATP generation.
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Affiliation(s)
- Jun Gao
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, 511518, Guangdong, PR China.
| | - Tian Zhang
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, 511518, Guangdong, PR China
| | - Zhanfang Kang
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, 511518, Guangdong, PR China
| | - Weijen Ting
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, 511518, Guangdong, PR China; Graduate Institute of Basic Medical Science, China Medical University, Taichung 40402, Taiwan
| | - Lingqing Xu
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, 511518, Guangdong, PR China
| | - Dazhong Yin
- Department of Basic Medical Research, The Sixth Affiliated Hospital of Guangzhou Medical University, 511518, Guangdong, PR China; Key Laboratory of Protein Chemistry and Developmental Biology of Ministry of Education, College of Life Sciences, Hunan Normal University, Changsha 410081, Hunan, PR China.
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From Inflammation to Current and Alternative Therapies Involved in Wound Healing. Int J Inflam 2017; 2017:3406215. [PMID: 28811953 PMCID: PMC5547704 DOI: 10.1155/2017/3406215] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/01/2017] [Accepted: 06/06/2017] [Indexed: 02/08/2023] Open
Abstract
Wound healing is a complex event that develops in three overlapping phases: inflammatory, proliferative, and remodeling. These phases are distinct in function and histological characteristics. However, they depend on the interaction of cytokines, growth factors, chemokines, and chemical mediators from cells to perform regulatory events. In this article, we will review the pathway in the skin healing cascade, relating the major chemical inflammatory mediators, cellular and molecular, as well as demonstrating the local and systemic factors that interfere in healing and disorders associated with tissue repair deficiency. Finally, we will discuss the current therapeutic interventions in the wounds treatment, and the alternative therapies used as promising results in the development of new products with healing potential.
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Negative regulators of angiogenesis: important targets for treatment of exudative AMD. Clin Sci (Lond) 2017; 131:1763-1780. [PMID: 28679845 DOI: 10.1042/cs20170066] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 03/17/2017] [Accepted: 04/03/2017] [Indexed: 12/12/2022]
Abstract
Angiogenesis contributes to the pathogenesis of many diseases including exudative age-related macular degeneration (AMD). It is normally kept in check by a tightly balanced production of pro- and anti-angiogenic factors. The up-regulation of the pro-angiogenic factor, vascular endothelial growth factor (VEGF), is intimately linked to the pathogenesis of exudative AMD, and its antagonism has been effectively targeted for treatment. However, very little is known about potential changes in expression of anti-angiogenic factors and the role they play in choroidal vascular homeostasis and neovascularization associated with AMD. Here, we will discuss the important role of thrombospondins and pigment epithelium-derived factor, two major endogenous inhibitors of angiogenesis, in retinal and choroidal vascular homeostasis and their potential alterations during AMD and choroidal neovascularization (CNV). We will review the cell autonomous function of these proteins in retinal and choroidal vascular cells. We will also discuss the potential targeting of these molecules and use of their mimetic peptides for therapeutic development for exudative AMD.
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Li W, Li Y, Li G, Zhou Z, Chang X, Xia Y, Dong X, Liu Z, Ren B, Liu W, Li Y. Ectopic expression of the ATP synthase β subunit on the membrane of PC-3M cells supports its potential role in prostate cancer metastasis. Int J Oncol 2017; 50:1312-1320. [PMID: 28259978 DOI: 10.3892/ijo.2017.3878] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/20/2016] [Indexed: 11/05/2022] Open
Abstract
Metastatic prostate cancer is associated with high mortality rates. Identification of metastasis-related proteins may facilitate the development of novel therapies for the treatment of metastatic disease. In the present study, we aimed to identify prostate cancer metastasis-associated membrane proteins. We developed a phage-displayed 7-mer peptide library to screen the target peptides that were specifically bound to PC-3M cells with subtractive panning from normal prostate cells and PC-3 prostate cancer cells. A novel short peptide (B04) was found to have high affinity to highly metastatic PC-3M cells. ATP synthase β subunit (ATP5B) was then identified as a binding partner of B04 on the PC-3M cell surface. ATP5B was expressed on the PC-3M cell membrane and on highly malignant human prostate cancer specimens, as shown using multiple methodologies. Furthermore, ATP5B-positive gold particles were detected on the cellular and mitochondrial membranes by immunoelectromicroscopy. These results implied the possibility that ATP5B may translocate from the inner mitochondrial membrane to the outer surface of PC-3M cells. Additional analysis showed that incubation of B04 with PC-3M cells reduced the detection of ATP5B by western blotting and flow cytometry and significantly inhibited the proliferation, invasion and metastasis of PC-3M cells. In conclusion, ATP5B, as a binding partner of a metastasis-related short peptide (B04) on prostate cancer cells, is involved in promoting prostate cancer metastasis. In conclusion, ATP5B may be a promising biomarker and therapeutic target for highly metastatic malignancies.
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Affiliation(s)
- Wei Li
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yulin Li
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Gaiyun Li
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Zilong Zhou
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Xiaona Chang
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yang Xia
- Department of Pathology, the Second Clinical Hospital, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Xinjie Dong
- Department of Pathology, the First Clinical Hospital, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Zhijing Liu
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Bo Ren
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Wei Liu
- Department of Pathology, Longgang District Central Hospital of Shenzhen, Shenzhen, Guangdong 518116, P.R. China
| | - Yilei Li
- The Key Laboratory of Pathobiology, Ministry of Education, The College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
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