1
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Lindsay S, Bartolotti L, Li Y. Interactions and conformational changes of annexin A2/p11 heterotetramer models on a membrane: a molecular dynamics study. J Biomol Struct Dyn 2023:1-10. [PMID: 37705315 DOI: 10.1080/07391102.2023.2256877] [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: 06/09/2023] [Accepted: 09/04/2023] [Indexed: 09/15/2023]
Abstract
Ca2+-dependent membrane-binding by the Annexin A2/p11 heterotetramer (A2t) plays an important role in various biological processes including fibrinogen activation and exocytosis in neuroendocrine cells. Two models where A2t associates with a single membrane surface were generated and used to perform molecular dynamics simulations. The first model mimics initial A2t-membrane binding through both Annexin A2 (A2) subunits of A2t (TS model) while the second model mimics A2t-binding through a single A2 subunit (OS model). Conformational changes were summarized using principal component analysis (PCA), simulation snapshots, and distance plots from the simulations. The full TS model, including the p11 dimer, fully associates with the membrane adopting a stable structure with little conformational variation as evidence by PCA. The unassociated subunits of the OS model moved toward the membrane. The molecular mechanics/Generalized-Born surface area (MMGBSA) method was applied to investigate the energetics of the models. The MMGBSA results demonstrated that R63 of p11 was the primary contributor to the p11-membrane interaction. The TS model results were both consistent with those found in the literature and provide novel insights about the specific residues driving the A2t-membrane interaction. Additionally, it represents the most complete model of A2t on the membrane surface available.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Samuel Lindsay
- Department of Chemistry, East Carolina University, Greenville, North Carolina, USA
| | - Libero Bartolotti
- Department of Chemistry, East Carolina University, Greenville, North Carolina, USA
| | - Yumin Li
- Department of Chemistry, East Carolina University, Greenville, North Carolina, USA
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2
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Huang SW, Chen YC, Lin YH, Yeh CT. Clinical Limitations of Tissue Annexin A2 Level as a Predictor of Postoperative Overall Survival in Patients with Hepatocellular Carcinoma. J Clin Med 2021; 10:jcm10184158. [PMID: 34575275 PMCID: PMC8465313 DOI: 10.3390/jcm10184158] [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: 08/12/2021] [Revised: 09/07/2021] [Accepted: 09/13/2021] [Indexed: 11/20/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the second common cause of cancer-related death in Taiwan. Tumor recurrence is frequently observed in HCC patients receiving surgical resection, resulting in unsatisfactory overall survival (OS). Therefore, it is pivotal to identify effective prognostic makers, so that intensive surveillance or adjuvant treatments can be applied to predictively unfavorable patients. Previous studies indicated that Annexin A2 (ANXA2) was an effective prognostic marker in several cancers, including HCC. However, the prognostic value of ANXA2 in Taiwanese HCC patients remains unclear, where a great proportion of patients had chronic hepatitis B with liver cirrhosis. Here, ANXA2 was highly expressed in HCC tissues compared with para-neoplastic noncancerous tissues. Furthermore, high ANXA2 expression in HCC tissues independently predicted shorter OS. In subgroup analysis, however, ANXA2 expression could not effectively predict OS in the following subgroups: female, age > 65 years old, Child–Pugh classification B, hepatitis B virus surface antigen negative or anti-hepatitis C antibody positive, alcoholism, tumor number >1, presence of micro- or macrovascular invasion, absence of capsule, non-cirrhosis and high alpha-fetoprotein. In conclusion, ANXA2 expression in HCC tissues could predict postoperative OS. However, the predictive value was limited in patients with specific clinical conditions.
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Affiliation(s)
- Shu-Wei Huang
- Department of Gastroenterology and Hepatology, New Taipei Municipal Tucheng Hospital, New Taipei 236, Taiwan;
- Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
| | - Yen-Chin Chen
- Graduate Institute of Clinical Medicine, Chang Gung University, Taoyuan 333, Taiwan;
| | - Yang-Hsiang Lin
- Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
- Correspondence: (Y.-H.L.); (C.-T.Y.); Tel.: +886-3328-1200 (ext. 7785) (Y.-H.L.); +886-3328-1200 (ext. 8129) (C.-T.Y.); Fax: +886-3328-2824 (C.-T.Y.)
| | - Chau-Ting Yeh
- Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
- Correspondence: (Y.-H.L.); (C.-T.Y.); Tel.: +886-3328-1200 (ext. 7785) (Y.-H.L.); +886-3328-1200 (ext. 8129) (C.-T.Y.); Fax: +886-3328-2824 (C.-T.Y.)
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3
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Király N, Thalwieser Z, Fonódi M, Csortos C, Boratkó A. Dephosphorylation of annexin A2 by protein phosphatase 1 regulates endothelial cell barrier. IUBMB Life 2021; 73:1257-1268. [PMID: 34331392 DOI: 10.1002/iub.2538] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/19/2021] [Accepted: 07/26/2021] [Indexed: 11/08/2022]
Abstract
Annexin A2 (ANXA2) is a multifunctional protein expressed in nearly all human tissues and cell types, playing a role in various signaling pathways. It is subjected to phosphorylation, but no specific protein phosphatase has been identified in its posttranslational regulation yet. Using pull-down assay followed by liquid chromatography-mass spectrometry analysis we found that ANXA2 interacts with TIMAP (TGF-beta-inhibited membrane-associated protein) in pulmonary artery endothelial cells. TIMAP is highly expressed in endothelial cells, where it acts as a regulatory and targeting subunit of protein phosphatase 1 (PP1). TIMAP plays an important role in the regulation of the endothelial barrier maintenance through the dephosphorylation of its several substrate proteins. In the present work, phosphorylation of Ser25 side chain in ANXA2 by protein kinase C (PKC) was shown both in vivo and in vitro. Phosphorylation level of ANXA2 at Ser25 increased greatly by inhibition of PP1 and by depletion of its regulatory subunit, TIMAP, implying a role of this PP1 holoenzyme in the dephosphorylation of ANXA2. Immunofluorescence staining and subcellular fractionations revealed a diffuse subcellular localization for the endogenous ANXA2, but phospho-Ser25 ANXA2 was mainly detected in the membrane. ANXA2 depletion lowered the basal endothelial barrier and inhibited cell migration, but had no significant effect on cell proliferation or viability. ANXA2 depleted cells failed to respond to PMA treatment, indicating an intimately involvement of phospho-ANXA2 in PKC signaling. Moreover, phosphorylation of ANXA2 disrupted its interaction with S100A10 suggesting a phosphorylation dependent multiple regulatory role of ANXA2 in endothelial cells. Our results demonstrate the pivotal role of PKC-ANXA2-PP1 pathway in endothelial cell signaling, especially in barrier function and cell migration.
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Affiliation(s)
- Nikolett Király
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsófia Thalwieser
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Márton Fonódi
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Csilla Csortos
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Anita Boratkó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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4
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Cheng C, Wang X, Jiang Y, Li Y, Liao Z, Li W, Yu Z, Whalen MJ, Lok J, Dumont AS, Liu N, Wang X. Recombinant Annexin A2 Administration Improves Neurological Outcomes After Traumatic Brain Injury in Mice. Front Pharmacol 2021; 12:708469. [PMID: 34400908 PMCID: PMC8363504 DOI: 10.3389/fphar.2021.708469] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/28/2021] [Indexed: 12/14/2022] Open
Abstract
Microvascular failure is one of the key pathogenic factors in the dynamic pathological evolution after traumatic brain injury (TBI). Our laboratory and others previously reported that Annexin A2 functions in blood-brain barrier (BBB) development and cerebral angiogenesis, and recombinant human Annexin A2 (rA2) protected against hypoxia plus IL-1β-induced cerebral trans-endothelial permeability in vitro, and cerebral angiogenesis impairment of AXNA2 knock-out mice in vivo. We thereby hypothesized that ANXA2 might be a cerebrovascular therapy candidate that targets early BBB integrity disruption, and subacute/delayed cerebrovascular remodeling after TBI, ultimately improve neurological outcomes. In a controlled cortex impact (CCI) mice model, we found rA2 treatment (1 mg/kg) significantly reduced early BBB disruption at 24 h after TBI; and rA2 daily treatment for 7 days augmented TBI-induced mRNA levels of pro-angiogenic and endothelial-derived trophic factors in cerebral microvessels. In cultured human brain microvascular endothelial cells (HBMEC), through MAPKs array, we identified that rA2 significantly activated Akt, ERK, and CREB, and the activated CREB might be responsible for the rA2-induced VEGF and BDNF expression. Moreover, rA2 administration significantly increased cerebral angiogenesis examined at 14 days and vessel density at 28 days after TBI in mice. Consistently, our results validated that rA2 significantly induced angiogenesis in vitro, evidenced by tube formation and scratched migration assays in HBMEC. Lastly, we demonstrated that rA2 improved long-term sensorimotor and cognitive function, and reduced brain tissue loss at 28 days after TBI. Our findings suggest that rA2 might be a novel vascular targeting approach for treating TBI.
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Affiliation(s)
- Chongjie Cheng
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Neuroprotection Research Laboratory, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Xiaoshu Wang
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Neuroprotection Research Laboratory, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Yinghua Jiang
- Clinical Neuroscience Research Center, Department of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA, United States
| | - Yadan Li
- Clinical Neuroscience Research Center, Department of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA, United States
| | - Zhengbu Liao
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Neuroprotection Research Laboratory, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Wenlu Li
- Neuroprotection Research Laboratory, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Zhanyang Yu
- Neuroprotection Research Laboratory, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Michael J Whalen
- Department of Pediatrics, Pediatric Critical Care Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Josephine Lok
- Neuroprotection Research Laboratory, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States.,Department of Pediatrics, Pediatric Critical Care Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Aaron S Dumont
- Clinical Neuroscience Research Center, Department of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA, United States
| | - Ning Liu
- Clinical Neuroscience Research Center, Department of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA, United States
| | - Xiaoying Wang
- Clinical Neuroscience Research Center, Department of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA, United States
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5
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Shalhout SZ, Yang PY, Grzelak EM, Nutsch K, Shao S, Zambaldo C, Iaconelli J, Ibrahim L, Stanton C, Chadwick SR, Chen E, DeRan M, Li S, Hull M, Wu X, Chatterjee AK, Shen W, Camargo FD, Schultz PG, Bollong MJ. YAP-dependent proliferation by a small molecule targeting annexin A2. Nat Chem Biol 2021; 17:767-775. [PMID: 33723431 DOI: 10.1038/s41589-021-00755-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 01/27/2021] [Indexed: 12/21/2022]
Abstract
The transcriptional coactivator Yes-associated protein 1 (YAP) orchestrates a proproliferative transcriptional program that controls the fate of somatic stem cells and the regenerative responses of certain tissues. As such, agents that activate YAP may hold therapeutic potential in disease states exacerbated by insufficient proliferative repair. Here we report the discovery of a small molecule, termed PY-60, which robustly activates YAP transcriptional activity in vitro and promotes YAP-dependent expansion of epidermal keratinocytes in mouse following topical drug administration. Chemical proteomics revealed the relevant target of PY-60 to be annexin A2 (ANXA2), a protein that directly associates with YAP at the cell membrane in response to increased cell density. PY-60 treatment liberates ANXA2 from the membrane, ultimately promoting a phosphatase-bound, nonphosphorylated and transcriptionally active form of YAP. This work reveals ANXA2 as a previously undescribed, druggable component of the Hippo pathway and suggests a mechanistic rationale to promote regenerative repair in disease.
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Affiliation(s)
- Sophia Z Shalhout
- Stem Cell Program, Boston Children's Hospital, Boston, MA, USA.,Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA.,Harvard Stem Cell Institute, Boston, MA, USA
| | - Peng-Yu Yang
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA.,Calibr, a division of Scripps Research, La Jolla, CA, USA
| | - Edyta M Grzelak
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Kayla Nutsch
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Sida Shao
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Claudio Zambaldo
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Jonathan Iaconelli
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Lara Ibrahim
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Caroline Stanton
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Stormi R Chadwick
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Emily Chen
- Calibr, a division of Scripps Research, La Jolla, CA, USA
| | - Michael DeRan
- Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Sijia Li
- Calibr, a division of Scripps Research, La Jolla, CA, USA
| | - Mitchell Hull
- Calibr, a division of Scripps Research, La Jolla, CA, USA
| | - Xu Wu
- Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | | | - Weijun Shen
- Calibr, a division of Scripps Research, La Jolla, CA, USA.
| | - Fernando D Camargo
- Stem Cell Program, Boston Children's Hospital, Boston, MA, USA. .,Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA. .,Harvard Stem Cell Institute, Boston, MA, USA.
| | - Peter G Schultz
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA. .,Calibr, a division of Scripps Research, La Jolla, CA, USA.
| | - Michael J Bollong
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA.
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6
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Liu H, He J, Wu Y, Du Y, Jiang Y, Chen C, Yu Z, Zhong J, Wang Z, Cheng C, Sun X, Huang Z. Endothelial Regulation by Exogenous Annexin A1 in Inflammatory Response and BBB Integrity Following Traumatic Brain Injury. Front Neurosci 2021; 15:627110. [PMID: 33679307 PMCID: PMC7930239 DOI: 10.3389/fnins.2021.627110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 01/15/2021] [Indexed: 12/19/2022] Open
Abstract
Background and Target Following brain trauma, blood–brain barrier (BBB) disruption and inflammatory response are critical pathological steps contributing to secondary injury, leading to high mortality and morbidity. Both pathologies are closely associated with endothelial remodeling. In the present study, we concentrated on annexin A1 (ANXA1) as a novel regulator of endothelial function after traumatic brain injury. Methods After establishing controlled cortical impact (CCI) model in male mice, human recombinant ANXA1 (rANXA1) was administered intravenously, followed by assessments of BBB integrity, brain edema, inflammatory response, and neurological deficits. Result Animals treated with rANXA1 (1 μg/kg) at 1 h after CCI exhibited optimal BBB protection including alleviated BBB disruption and brain edema, as well as endothelial junction proteins loss. The infiltrated neutrophils and inflammatory cytokines were suppressed by rANXA1, consistent with decreased adhesive and transmigrating molecules from isolated microvessels. Moreover, rANXA1 attenuated the neurological deficits induced by CCI. We further found that the Ras homolog gene family member A (RhoA) inhibition has similar effect as rANXA1 in ameliorating brain injuries after CCI, whereas rANXA1 suppressed CCI-induced RhoA activation. Conclusion Our findings suggest that the endothelial remodeling by exogenous rANXA1 corrects BBB disruption and inflammatory response through RhoA inhibition, hence improving functional outcomes in CCI mice.
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Affiliation(s)
- Han Liu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Department of Neurosurgery, Qilu Hospital of Shandong University (Qingdao Campus), Qingdao, China
| | - Junchi He
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yue Wu
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Du
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Yinghua Jiang
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Zhanyang Yu
- Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jianjun Zhong
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhigang Wang
- Department of Neurosurgery, Qilu Hospital of Shandong University (Qingdao Campus), Qingdao, China
| | - Chongjie Cheng
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaochuan Sun
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhijian Huang
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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7
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Zhang C, Zhou T, Chen Z, Yan M, Li B, Lv H, Wang C, Xiang S, Shi L, Zhu Y, Ai D. Coupling of Integrin α5 to Annexin A2 by Flow Drives Endothelial Activation. Circ Res 2020; 127:1074-1090. [PMID: 32673515 DOI: 10.1161/circresaha.120.316857] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
RATIONALE Atherosclerosis preferentially occurs at specific sites of the vasculature where endothelial cells (ECs) are exposed to disturbed blood flow. Translocation of integrin α5 to lipid rafts promotes integrin activation and ligation, which is critical for oscillatory shear stress (OSS)-induced EC activation. However, the underlying mechanism of OSS promoted integrin α5 lipid raft translocation has remained largely unknown. OBJECTIVE The objective of this study was to specify the mechanotransduction mechanism of OSS-induced integrin α5 translocation and subsequent EC activation. METHODS AND RESULTS Mass spectrometry studies identified endothelial ANXA2 (annexin A2) as a potential carrier allowing integrin α5β1 to traffic in response to OSS. Interference by siRNA of AnxA2 in ECs greatly decreased OSS-induced integrin α5β1 translocation to lipid rafts, EC activation, and monocyte adhesion. Pharmacological and genetic inhibition of PTP1B (protein tyrosine phosphatase 1B) blunted OSS-induced integrin α5β1 activation, which is dependent on Piezo1-mediated calcium influx in ECs. Furthermore, ANXA2 was identified as a direct substrate of activated PTP1B by mass spectrometry. Using bioluminescence resonance energy transfer assay, PTP1B-dephosphorylated ANXA2 at Y24 was found to lead to conformational freedom of the C-terminal core domain from the N-terminal domain of ANXA2. Immunoprecipitation assays showed that this unmasked ANXA2-C-terminal core domain specifically binds to an integrin α5 nonconserved cytoplasmic domain but not β1. Importantly, ectopic lentiviral overexpression of an ANXA2Y24F mutant increased and shRNA against Ptp1B decreased integrin α5β1 ligation, inflammatory signaling, and progression of plaques at atheroprone sites in apolipoprotein E (ApoE)-/- mice. However, the antiatherosclerotic effect of Ptp1B shRNA was abolished in AnxA2-/-ApoE-/- mice. CONCLUSIONS Our data elucidate a novel endothelial mechanotransduction molecular mechanism linking atheroprone flow and activation of integrin α5β1, thereby identifying a class of potential therapeutic targets for atherosclerosis. Graphic Abstract: An graphic abstract is available for this article.
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Affiliation(s)
- Chenghu Zhang
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China
| | - Ting Zhou
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China
| | - Zhipeng Chen
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China
| | - Meng Yan
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China
| | - Bochuan Li
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China
| | - Huizhen Lv
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China.,National Clinical Research Center for Blood Diseases; Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China (H.L., L.S., D.A.)
| | - Chunjiong Wang
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China
| | - Song Xiang
- Department of Biochemistry and Molecular Biology (S.X., L.S.), Tianjin Medical University, China
| | - Lei Shi
- Department of Biochemistry and Molecular Biology (S.X., L.S.), Tianjin Medical University, China.,National Clinical Research Center for Blood Diseases; Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China (H.L., L.S., D.A.)
| | - Yi Zhu
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China
| | - Ding Ai
- State Key Laboratory of Experimental Hematology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education) and Department of Physiology and Pathophysiology, Tianjin Key Laboratory of Metabolic Diseases (C.Z., T.Z., Z.C., M.Y., B.L., H.L., C.W., Y.Z., D.A.), Tianjin Medical University, China.,National Clinical Research Center for Blood Diseases; Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China (H.L., L.S., D.A.)
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8
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Barruet E, Garcia SM, Striedinger K, Wu J, Lee S, Byrnes L, Wong A, Xuefeng S, Tamaki S, Brack AS, Pomerantz JH. Functionally heterogeneous human satellite cells identified by single cell RNA sequencing. eLife 2020; 9:51576. [PMID: 32234209 PMCID: PMC7164960 DOI: 10.7554/elife.51576] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 03/27/2020] [Indexed: 12/19/2022] Open
Abstract
Although heterogeneity is recognized within the murine satellite cell pool, a comprehensive understanding of distinct subpopulations and their functional relevance in human satellite cells is lacking. We used a combination of single cell RNA sequencing and flow cytometry to identify, distinguish, and physically separate novel subpopulations of human PAX7+ satellite cells (Hu-MuSCs) from normal muscles. We found that, although relatively homogeneous compared to activated satellite cells and committed progenitors, the Hu-MuSC pool contains clusters of transcriptionally distinct cells with consistency across human individuals. New surface marker combinations were enriched in transcriptional subclusters, including a subpopulation of Hu-MuSCs marked by CXCR4/CD29/CD56/CAV1 (CAV1+). In vitro, CAV1+ Hu-MuSCs are morphologically distinct, and characterized by resistance to activation compared to CAV1- Hu-MuSCs. In vivo, CAV1+ Hu-MuSCs demonstrated increased engraftment after transplantation. Our findings provide a comprehensive transcriptional view of normal Hu-MuSCs and describe new heterogeneity, enabling separation of functionally distinct human satellite cell subpopulations.
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Affiliation(s)
- Emilie Barruet
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Steven M Garcia
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Katharine Striedinger
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Jake Wu
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Solomon Lee
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Lauren Byrnes
- University of California San Francisco, San Francisco, United States
| | - Alvin Wong
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Sun Xuefeng
- Department of Orthopedic Surgery, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Stanley Tamaki
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Andrew S Brack
- Department of Orthopedic Surgery, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
| | - Jason H Pomerantz
- Departments of Surgery and Orofacial Sciences, Division of Plastic and Reconstructive Surgery, Program in Craniofacial Biology, Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, San Francisco, United States
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9
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Li W, Chen Z, Yuan J, Yu Z, Cheng C, Zhao Q, Huang L, Hajjar KA, Chen Z, Lo EH, Dai H, Wang X. Annexin A2 is a Robo4 ligand that modulates ARF6 activation-associated cerebral trans-endothelial permeability. J Cereb Blood Flow Metab 2019; 39:2048-2060. [PMID: 29786451 PMCID: PMC6775579 DOI: 10.1177/0271678x18777916] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Blood-brain barrier (BBB) disruption in neurological disorders remains an intractable problem with limited therapeutic options. Here, we investigate whether the endothelial cell membrane protein annexin A2 (ANXA2) may play a role in reducing trans-endothelial permeability and maintaining cerebrovascular integrity after injury. Compared with wild-type mice, the expression of cerebral endothelial junctional proteins was reduced in E15.5 and adult ANXA2 knockout mice, along with increased leakage of small molecule tracers. In human brain endothelial cells that were damaged by hypoxia plus IL-1β, treatment with recombinant ANXA2 (rA2) rescued the expression of junctional proteins and decreased trans-endothelial permeability. These protective effects were mediated in part by interactions with F-actin and VE-cadherin, and the ability of rA2 to modulate signaling via the roundabout guidance receptor 4 (Robo4)-paxillin-ADP-ribosylation factor 6 (ARF6) pathway. Taken together, these observations suggest that ANXA2 may be associated with the maintenance of endothelial tightness after cerebrovascular injury. ANXA2-mediated pathways should be further explored as potential therapeutic targets for protecting the BBB in neurological disorders.
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Affiliation(s)
- Wenlu Li
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.,Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Zhigang Chen
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jing Yuan
- Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Zhanyang Yu
- Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Chongjie Cheng
- Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Qiuchen Zhao
- Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Lena Huang
- Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Katherine A Hajjar
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY, USA
| | - Zhong Chen
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Eng H Lo
- Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Haibin Dai
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoying Wang
- Neuroprotection Research Laboratory, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
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10
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Zibouche M, Illien F, Ayala-Sanmartin J. Annexin A2 expression and partners during epithelial cell differentiation. Biochem Cell Biol 2019; 97:612-620. [DOI: 10.1139/bcb-2018-0393] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The members of the annexin family of calcium- and phospholipid-binding proteins participate in different cellular processes. Annexin A2 binds to S100A10, forming a functional heterotetrameric protein that has been involved in many cellular functions, such as exocytosis, endocytosis, cell junction formation, and actin cytoskeleton dynamics. Herein, we studied annexin A2 cellular movements and looked for its partners during epithelial cell differentiation. By using immunofluorescence, mass spectrometry (MS), and western blot analyses after S100A10 affinity column separation, we identified several annexin A2–S100A10 partner candidates. The association of putative annexin A2–S100A10 partner candidates obtained by MS after column affinity was validated by immunofluorescence and sucrose density gradient separation. The results show that three proteins are clearly associated with annexin A2: E-cadherin, actin, and caveolin 1. Overall, the data show that annexin A2 can associate with molecular complexes containing actin, caveolin 1, and flotillin 2 before epithelial differentiation and with complexes containing E-cadherin, actin, and caveolin 1, but not flotillin 2 after cell differentiation. The results indicate that actin, caveolin 1, and E-cadherin are the principal protein partners of annexin A2 in epithelial cells and that the serine phosphorylation of the N-terminal domain does not play an essential role during epithelial cell differentiation.
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Affiliation(s)
- Malik Zibouche
- CNRS, Université Sorbonne, École normale supérieure, Université PSL, Laboratoire des biomolécules, Paris 75005, France
- CNRS, Université Sorbonne, École normale supérieure, Université PSL, Laboratoire des biomolécules, Paris 75005, France
| | - Françoise Illien
- CNRS, Université Sorbonne, École normale supérieure, Université PSL, Laboratoire des biomolécules, Paris 75005, France
- CNRS, Université Sorbonne, École normale supérieure, Université PSL, Laboratoire des biomolécules, Paris 75005, France
| | - Jesus Ayala-Sanmartin
- CNRS, Université Sorbonne, École normale supérieure, Université PSL, Laboratoire des biomolécules, Paris 75005, France
- CNRS, Université Sorbonne, École normale supérieure, Université PSL, Laboratoire des biomolécules, Paris 75005, France
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11
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Sadigh AR, Mihanfar A, Fattahi A, Latifi Z, Akbarzadeh M, Hajipour H, Bahrami‐asl Z, Ghasemzadeh A, Hamdi K, Nejabati HR, Nouri M. S100 protein family and embryo implantation. J Cell Biochem 2019; 120:19229-19244. [DOI: 10.1002/jcb.29261] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 06/14/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Aydin Raei Sadigh
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine Tabriz University of Medical Science Tabriz Iran
- Stem Cell Research Center Tabriz University of Medical Sciences Tabriz Iran
| | - Aynaz Mihanfar
- Department of Biochemistry, Faculty of Medicine Urmia University of Medical Sciences Urmia Iran
| | - Amir Fattahi
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Zeinab Latifi
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine Tabriz University of Medical Science Tabriz Iran
- Stem Cell And Regenerative Medicine Institute Tabriz University of Medical Sciences Tabriz Iran
| | - Maryam Akbarzadeh
- Stem Cell And Regenerative Medicine Institute Tabriz University of Medical Sciences Tabriz Iran
- Department of Biochemistry Erasmus University Medical Center Rotterdam The Netherlands
| | - Hamed Hajipour
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Zahra Bahrami‐asl
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Aliyeh Ghasemzadeh
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Kobra Hamdi
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Hamid Reza Nejabati
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine Tabriz University of Medical Science Tabriz Iran
- Stem Cell Research Center Tabriz University of Medical Sciences Tabriz Iran
- Stem Cell And Regenerative Medicine Institute Tabriz University of Medical Sciences Tabriz Iran
- Student Research Committee Tabriz University of Medical Sciences Tabriz Iran
| | - Mohammad Nouri
- Stem Cell Research Center Tabriz University of Medical Sciences Tabriz Iran
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
- Stem Cell And Regenerative Medicine Institute Tabriz University of Medical Sciences Tabriz Iran
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12
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Lepczyński A, Herosimczyk A, Ożgo M, Barszcz M, Taciak M, Skomiał J. Modification of ileal proteome in growing pigs by dietary supplementation with inulin or dried chicory root. JOURNAL OF ANIMAL AND FEED SCIENCES 2019. [DOI: 10.22358/jafs/109518/2019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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ANXA2 Tyr23 and FLNA Ser2152 phosphorylation associate with poor prognosis in hepatic carcinoma revealed by quantitative phosphoproteomics analysis. J Proteomics 2019; 200:111-122. [PMID: 30951906 DOI: 10.1016/j.jprot.2019.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/15/2019] [Accepted: 03/31/2019] [Indexed: 02/06/2023]
Abstract
Hepatoma is one of the most common malignant tumors, and most patients have very poor prognosis. Early prediction and intervention of the hepatoma recurrence/metastasis are the most effective way to improve the patients' clinical outcomes. Here, we used isobaric tags for relative and absolute quantitation (iTRAQ) based quantitative phospho-proteomics approach to identify biomarkers associated with hepatoma recurrence/metastasis in hepatoma cell lines with increasing metastasis ability. In total, 75 phosphorylated peptides corresponding to 60 phosphoproteins were significantly dysregulated and the participated biological processes of these phosphoproteins were tightly associated with tumor metastasis. Further signaling pathway analysis revealed that key signaling pathways which play crucial roles in cancer metastasis have been significantly over activated in the highly metastatic cells. Furthermore, the phosphorylation of FLNASer2152 and ANXA2Tyr23 were validated to be significantly up regulated in the high-metastatic cells comparing with the low-metastatic cells. By further investigation the clinical significance of the phosphorylation of FLNASer2152 and ANXA2Tyr23 in large-scale clinical samples, revealed that the over phosphorylation of FLNASer2152 and ANXA2Tyr23 were associated with poor prognosis and might be potential prognostic biomarkers for the primary hepatoma. When FLNASer2152 combined with ANXA2Tyr23, it had a better prognostic value for both OS and TTR.
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14
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Abd El-Aleem SA, Dekker LV. Assessment of the cellular localisation of the annexin A2/S100A10 complex in human placenta. J Mol Histol 2018; 49:531-543. [PMID: 30143909 PMCID: PMC6182581 DOI: 10.1007/s10735-018-9791-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 07/30/2018] [Indexed: 01/07/2023]
Abstract
The AnxA2/S100A10 complex has been implicated in various placental functions but although the localisation of these proteins individually has been studied, there is no information about the localisation of their complex in situ at the cellular level. Using the proximity ligation technique, we have investigated the in situ localisation of AnxA2/S100A10 complex in the placenta and have compared this with the location patterns of the individual proteins. High levels of expression of AnxA2/S100A10 complexes were observed in the amniotic membrane and in blood vessel endothelial cells. Lower levels were detected in the brush border area of the syncytium and in the trophoblasts. Immunohistochemical analysis of AnxA2 and S100A10 individually revealed broadly similar patterns of localisation. The brush border staining pattern suggests that in this location at least some of the AnxA2 is not in complex with S100A10. The formal location of the AnxA2/S100A10 complex is compatible with a role in cell-cell interaction, intracellular transport and secretory processes and regulation of cell surface proteases, implying contributions to membrane integrity, nutrient exchange, placentation and vascular remodelling in different parts of the placenta. Future applications will allow specific assessment of the association of the complex with pathophysiological disorders.
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Affiliation(s)
- Seham A Abd El-Aleem
- School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, Nottingham, NG7 2RD, UK.,Department of Histology, Minia Faculty of Medicine, Minia, Egypt
| | - Lodewijk V Dekker
- School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, Nottingham, NG7 2RD, UK.
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15
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Chang XB, Yang YQ, Gao JC, Zhao K, Guo JC, Ye C, Jiang CG, Tian ZJ, Cai XH, Tong GZ, An TQ. Annexin A2 binds to vimentin and contributes to porcine reproductive and respiratory syndrome virus multiplication. Vet Res 2018; 49:75. [PMID: 30053894 PMCID: PMC6064111 DOI: 10.1186/s13567-018-0571-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 07/12/2018] [Indexed: 11/17/2022] Open
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is an important globally distributed and highly contagious pathogen that has restricted cell tropism in vivo and in vitro. In the present study, we found that annexin A2 (ANXA2) is upregulated expressed in porcine alveolar macrophages infected with PRRSV. Additionally, PRRSV replication was significantly suppressed after reducing ANXA2 expression in Marc-145 cells using siRNA. Bioinformatics analysis indicated that ANXA2 may be relevant to vimentin, a cellular cytoskeleton component that is thought to be involved in the infectivity and replication of PRRSV. Co-immunoprecipitation assays and confocal analysis confirmed that ANXA2 interacts with vimentin, with further experiments indicating that the B domain (109–174 aa) of ANXA2 contributes to this interaction. Importantly, neither ANXA2 nor vimentin alone could bind to PRRSV and only in the presence of ANXA2 could vimentin interact with the N protein of PRRSV. No binding to the GP2, GP3, GP5, nor M proteins of PRRSV was observed. In conclusion, ANXA2 can interact with vimentin and enhance PRRSV growth. This contributes to the regulation of PRRSV replication in infected cells and may have implications for the future antiviral strategies.
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Affiliation(s)
- Xiao-Bo Chang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Yong-Qian Yang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Jia-Cong Gao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Kuan Zhao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Jin-Chao Guo
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Chao Ye
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Cheng-Gang Jiang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Zhi-Jun Tian
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Xue-Hui Cai
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guang-Zhi Tong
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, China
| | - Tong-Qing An
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
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16
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Regulation of the Equilibrium between Closed and Open Conformations of Annexin A2 by N-Terminal Phosphorylation and S100A4-Binding. Structure 2017; 25:1195-1207.e5. [PMID: 28669632 DOI: 10.1016/j.str.2017.06.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/27/2017] [Accepted: 06/01/2017] [Indexed: 11/20/2022]
Abstract
Annexin A2 (ANXA2) has a versatile role in membrane-associated functions including membrane aggregation, endo- and exocytosis, and it is regulated by post-translational modifications and protein-protein interactions through the unstructured N-terminal domain (NTD). Our sequence analysis revealed a short motif responsible for clamping the NTD to the C-terminal core domain (CTD). Structural studies indicated that the flexibility of the NTD and CTD are interrelated and oppositely regulated by Tyr24 phosphorylation and Ser26Glu phosphomimicking mutation. The crystal structure of the ANXA2-S100A4 complex showed that asymmetric binding of S100A4 induces dislocation of the NTD from the CTD and, similar to the Ser26Glu mutation, unmasks the concave side of ANXA2. In contrast, pTyr24 anchors the NTD to the CTD and hampers the membrane-bridging function. This inhibition can be restored by S100A4 and S100A10 binding. Based on our results we provide a structural model for regulation of ANXA2-mediated membrane aggregation by NTD phosphorylation and S100 binding.
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17
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Fang W, Fa ZZ, Xie Q, Wang GZ, Yi J, Zhang C, Meng GX, Gu JL, Liao WQ. Complex Roles of Annexin A2 in Host Blood-Brain Barrier Invasion by Cryptococcus neoformans. CNS Neurosci Ther 2017; 23:291-300. [PMID: 28130864 DOI: 10.1111/cns.12673] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 12/15/2016] [Accepted: 12/19/2016] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Fungal transversal across the brain microvascular endothelial cells (BMECs) is the essential step for the development of cryptococcal meningoencephalitis. Annexin A2 (AnxA2) is an important signaling protein involved in several intracellular processes such as membrane trafficking, endocytosis, and exocytosis. AIM To investigate the roles and mechanism of AnxA2 during cryptococcal transversal of BMECs. RESULTS Cryptococcus neoformans infection initiated upregulation of AnxA2 in mouse BMECs. Blockade with anti-AnxA2 antibody led to a reduction in fungal transcytosis activity but no change in its adhesion efficiency. Intriguingly, AnxA2 depletion caused a significant increase in fungal association activity but had no effect on their transcytosis. AnxA2 suppression resulted in marked reduction in its partner protein S100A10, and S100A10 suppression in BMECs significantly reduced the cryptococcal transcytosis efficiency. Furthermore, AnxA2 dephosphorylation at Tyr23 and dephosphorylation of downstream cofilin were required for cryptococcal transversal of BMECs, both of which might be primarily involved in the association of C. neoformans with host cells. CONCLUSIONS Our work indicated that AnxA2 played complex roles in traversal of C. neoformans across host BMECs, which might be dependent on downstream cofilin to inhibit fungal adhesion but rely on its partner S100A10 to promote cryptococcal transcytosis.
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Affiliation(s)
- Wei Fang
- PLA Key Laboratory of Mycosis, Department of Dermatology and Venereology, Changzheng Hospital, Shanghai, China.,Shanghai Key Laboratory of Molecular Medical Mycology, Shanghai Institute of Medical Mycology, Second Military Medical University, Shanghai, China
| | - Zhen-Zong Fa
- Shanghai Key Laboratory of Molecular Medical Mycology, Shanghai Institute of Medical Mycology, Second Military Medical University, Shanghai, China
| | - Qun Xie
- Department of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Gui-Zhen Wang
- ICU Department, Urumuqi Army General Hospital, Urumqi, Xinjiang, China
| | - Jiu Yi
- Shanghai Key Laboratory of Molecular Medical Mycology, Shanghai Institute of Medical Mycology, Second Military Medical University, Shanghai, China
| | - Chao Zhang
- Shanghai Key Laboratory of Molecular Medical Mycology, Shanghai Institute of Medical Mycology, Second Military Medical University, Shanghai, China
| | - Guang-Xun Meng
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Ju-Lin Gu
- PLA Key Laboratory of Mycosis, Department of Dermatology and Venereology, Changzheng Hospital, Shanghai, China.,Department of Dermatology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Wan-Qing Liao
- Shanghai Key Laboratory of Molecular Medical Mycology, Shanghai Institute of Medical Mycology, Second Military Medical University, Shanghai, China
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18
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Liu J, Fu R, Liu R, Zhao G, Zheng M, Cui H, Li Q, Song J, Wang J, Wen J. Protein Profiles for Muscle Development and Intramuscular Fat Accumulation at Different Post-Hatching Ages in Chickens. PLoS One 2016; 11:e0159722. [PMID: 27508388 PMCID: PMC4980056 DOI: 10.1371/journal.pone.0159722] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 06/10/2016] [Indexed: 02/06/2023] Open
Abstract
Muscle development and growth influences the efficiency of poultry meat production, and is closely related to deposition of intramuscular fat (IMF), which is crucial in meat quality. To clarify the molecular mechanisms underlying muscle development and IMF deposition in chickens, protein expression profiles were examined in the breast muscle of Beijing-You chickens at ages 1, 56, 98 and 140 days, using isobaric tags for relative and absolute quantification (iTRAQ). Two hundred and four of 494 proteins were expressed differentially. The expression profile at day 1 differed greatly from those at day 56, 98 and 140. KEGG pathway analysis of differential protein expression from pair-wise comparisons (day 1 vs. 56; 56 vs. 98; 98 vs. 140), showed that the fatty acid degradation pathway was more active during the stage from day 1 to 56 than at other periods. This was consistent with the change in IMF content, which was highest at day 1 and declined dramatically thereafter. When muscle growth was most rapid (days 56-98), pathways involved in muscle development were dominant, including hypertrophic cardiomyopathy, dilated cardiomyopathy, cardiac muscle contraction, tight junctions and focal adhesion. In contrast with hatchlings, the fatty acid degradation pathway was downregulated from day 98 to 140, which was consistent with the period for IMF deposition following rapid muscle growth. Changes in some key specific proteins, including fast skeletal muscle troponin T isoform, aldehyde dehydrogenase 1A1 and apolipoprotein A1, were verified by Western blotting, and could be potential biomarkers for IMF deposition in chickens. Protein-protein interaction networks showed that ribosome-related functional modules were clustered in all three stages. However, the functional module involved in the metabolic pathway was only clustered in the first stage (day 1 vs. 56). This study improves our understanding of the molecular mechanisms underlying muscle development and IMF deposition in chickens.
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Affiliation(s)
- Jie Liu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Ruiqi Fu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Ranran Liu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Guiping Zhao
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Maiqing Zheng
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Huanxian Cui
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Qinghe Li
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Jiao Song
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Jie Wang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
| | - Jie Wen
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
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19
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Nusshold C, Üllen A, Kogelnik N, Bernhart E, Reicher H, Plastira I, Glasnov T, Zangger K, Rechberger G, Kollroser M, Fauler G, Wolinski H, Weksler BB, Romero IA, Kohlwein SD, Couraud PO, Malle E, Sattler W. Assessment of electrophile damage in a human brain endothelial cell line utilizing a clickable alkyne analog of 2-chlorohexadecanal. Free Radic Biol Med 2016; 90:59-74. [PMID: 26577177 PMCID: PMC6392177 DOI: 10.1016/j.freeradbiomed.2015.11.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/05/2015] [Accepted: 11/07/2015] [Indexed: 11/19/2022]
Abstract
Peripheral leukocytes aggravate brain damage by releasing cytotoxic mediators that compromise blood-brain barrier function. One of the oxidants released by activated leukocytes is hypochlorous acid (HOCl) that is formed via the myeloperoxidase-H2O2-chloride system. The reaction of HOCl with the endogenous plasmalogen pool of brain endothelial cells results in the generation of 2-chlorohexadecanal (2-ClHDA), a toxic, lipid-derived electrophile that induces blood-brain barrier dysfunction in vivo. Here, we synthesized an alkynyl-analog of 2-ClHDA, 2-chlorohexadec-15-yn-1-al (2-ClHDyA) to identify potential protein targets in the human brain endothelial cell line hCMEC/D3. Similar to 2-ClHDA, 2-ClHDyA administration reduced cell viability/metabolic activity, induced processing of pro-caspase-3 and PARP, and led to endothelial barrier dysfunction at low micromolar concentrations. Protein-2-ClHDyA adducts were fluorescently labeled with tetramethylrhodamine azide (N3-TAMRA) by 1,3-dipolar cycloaddition in situ, which unveiled a preferential accumulation of 2-ClHDyA adducts in mitochondria, the Golgi, endoplasmic reticulum, and endosomes. Thirty-three proteins that are subject to 2-ClHDyA-modification in hCMEC/D3 cells were identified by mass spectrometry. Identified proteins include cytoskeletal components that are central to tight junction patterning, metabolic enzymes, induction of the oxidative stress response, and electrophile damage to the caveolar/endosomal Rab machinery. A subset of the targets was validated by a combination of N3-TAMRA click chemistry and specific antibodies by fluorescence microscopy. This novel alkyne analog is a valuable chemical tool to identify cellular organelles and protein targets of 2-ClHDA-mediated damage in settings where myeloperoxidase-derived oxidants may play a disease-propagating role.
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Affiliation(s)
- Christoph Nusshold
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria; BioTechMed Graz, Austria
| | - Andreas Üllen
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Nora Kogelnik
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Eva Bernhart
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Helga Reicher
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Ioanna Plastira
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Toma Glasnov
- Christian Doppler Laboratory for Flow Chemistry, Institute of Chemistry, University of Graz, Austria
| | | | - Gerald Rechberger
- BioTechMed Graz, Austria; Institute of Molecular Biosciences, NAWI-Graz, University of Graz, Austria; OMICS-Center Graz, BioTechMed Graz, Austria
| | | | - Günter Fauler
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | - Heimo Wolinski
- BioTechMed Graz, Austria; Institute of Molecular Biosciences, NAWI-Graz, University of Graz, Austria
| | - Babette B Weksler
- Weill Medical College of Cornell University, New York, NY 10065, USA
| | - Ignacio A Romero
- Department of Biological Sciences, The Open University, Walton Hall, Milton Keynes MK7 6BJ, UK
| | - Sepp D Kohlwein
- BioTechMed Graz, Austria; Institute of Molecular Biosciences, NAWI-Graz, University of Graz, Austria
| | - Pierre-Olivier Couraud
- Institut Cochin, Inserm, U1016, CNRS UMR 8104, Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Ernst Malle
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria
| | - Wolfgang Sattler
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Austria; BioTechMed Graz, Austria.
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20
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Lee SJ, Jung YH, Ryu JM, Jang KK, Choi SH, Han HJ. VvpE mediates the intestinal colonization of Vibrio vulnificus by the disruption of tight junctions. Int J Med Microbiol 2016; 306:10-9. [DOI: 10.1016/j.ijmm.2015.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 09/17/2015] [Accepted: 10/26/2015] [Indexed: 01/01/2023] Open
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21
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Gehren AS, Rocha MR, de Souza WF, Morgado-Díaz JA. Alterations of the apical junctional complex and actin cytoskeleton and their role in colorectal cancer progression. Tissue Barriers 2015; 3:e1017688. [PMID: 26451338 DOI: 10.1080/21688370.2015.1017688] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/31/2015] [Accepted: 02/06/2015] [Indexed: 01/08/2023] Open
Abstract
Colorectal cancer represents the fourth highest mortality rate among cancer types worldwide. An understanding of the molecular mechanisms that regulate their progression can prevents or reduces mortality due to this disease. Epithelial cells present an apical junctional complex connected to the actin cytoskeleton, which maintains the dynamic properties of this complex, tissue architecture and cell homeostasis. Several studies have indicated that apical junctional complex alterations and actin cytoskeleton disorganization play a critical role in epithelial cancer progression. However, few studies have examined the existence of an interrelation between these 2 components, particularly in colorectal cancer. This review discusses the recent progress toward elucidating the role of alterations of apical junctional complex constituents and of modifications of actin cytoskeleton organization and discusses how these events are interlinked to modulate cellular responses related to colorectal cancer progression toward successful metastasis.
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Affiliation(s)
- Adriana Sartorio Gehren
- Program of Cellular Biology; Brazilian National Cancer Institute (INCA) ; Rio de Janeiro, Brazil
| | - Murilo Ramos Rocha
- Program of Cellular Biology; Brazilian National Cancer Institute (INCA) ; Rio de Janeiro, Brazil
| | | | - José Andrés Morgado-Díaz
- Program of Cellular Biology; Brazilian National Cancer Institute (INCA) ; Rio de Janeiro, Brazil
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22
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Yang Z, Shi Z, Guo H, Qu H, Zhang Y, Tu C. Annexin 2 is a host protein binding to classical swine fever virus E2 glycoprotein and promoting viral growth in PK-15 cells. Virus Res 2015; 201:16-23. [PMID: 25701745 DOI: 10.1016/j.virusres.2015.02.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 02/09/2015] [Accepted: 02/11/2015] [Indexed: 12/15/2022]
Abstract
Glycoprotein E2 of classical swine fever virus (CSFV) is a key determinant and major immunogen for viral entry and immunity, but little is known about its interaction with host proteins. In a previous study, we showed by proteomic analysis that cellular membrane protein annexin 2 (Anx2) was up-regulated in PK-15 cells following CSFV infection, but its function in CSFV replication remains unknown. In the present study we observed the interaction of Anx2 with CSFV E2 following infection of PK-15 cells by co-immunoprecipitation (Co-IP), mass spectrometry, Western blot and confocal laser scanning microscopy. The interaction between CSFV E2 and Anx2 was further confirmed in an E2-expressing PK-15 cell line, in which up-regulation of Anx2 was also observed, indicating that E2 alone can interact with, and increase, the expression of Anx2 protein. Further studies showed that siRNA-mediated knock-down and plasmid-mediated over-expression of Anx2 in PK-15 cells inhibited and increased CSFV replication and proliferation respectively. Remarkably, treatment of PK-15 cells with Anx2-specific polyclonal antibody prior to virus infection significantly inhibited CSFV multiplication, indicating that Anx2 is a cellular membrane protein likely associated with CSFV entry into cells. In conclusion, Anx2 is the novel host protein identified to interact with CSFV E2 and promote CSFV multiplication. These observations provide support for the potential use of Anx2 as a cellular target for the development of novel anti-CSFV therapies.
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Affiliation(s)
- Zhi Yang
- Veterinary College of Jilin University, Xi An Road 5333, Changchun 130062, China; Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Liuying West Road 666, Changchun 130122, China
| | - Zixue Shi
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Liuying West Road 666, Changchun 130122, China
| | - Huancheng Guo
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Liuying West Road 666, Changchun 130122, China
| | - Hui Qu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Liuying West Road 666, Changchun 130122, China
| | - Yan Zhang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Liuying West Road 666, Changchun 130122, China
| | - Changchun Tu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Liuying West Road 666, Changchun 130122, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China.
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23
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Tanaka M, Ichikawa-Tomikawa N, Shishito N, Nishiura K, Miura T, Hozumi A, Chiba H, Yoshida S, Ohtake T, Sugino T. Co-expression of S100A14 and S100A16 correlates with a poor prognosis in human breast cancer and promotes cancer cell invasion. BMC Cancer 2015; 15:53. [PMID: 25884418 PMCID: PMC4348405 DOI: 10.1186/s12885-015-1059-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 01/29/2015] [Indexed: 11/27/2022] Open
Abstract
Background S100 family proteins have recently been identified as biomarkers in various cancers. Of this protein family, S100A14 and S100A16 are also believed to play an important role in tumor progression. The aim of the present study was to clarify the clinical significance and functional role of these molecules in breast cancer. Methods In a clinical study, an immunohistochemical analysis of S100A14 and S100A16 expression in archival specimens of primary tumors of 167 breast cancer patients was performed. The relationship of S100A14 and S100A16 expression to patient survival and clinicopathological variables was statistically analyzed. In an experimental study, the subcellular localization and function of these molecules was examined by using the human breast cancer cell lines MCF7 and SK-BR-3, both of which highly express S100A14 and S100A16 proteins. Cells transfected with expression vectors and siRNA for these genes were characterized using in vitro assays for cancer invasion and metastasis. Results Immunohistochemical analysis of 167 breast cancer cases showed strong cell membrane staining of S100A14 (53% of cases) and S100A16 (31% of cases) with a significant number of cases with co-expression (p < 0.001). Higher expression levels of these proteins were significantly associated with a younger age (<60 years), ER-negative status, HER2-positive status and a poorer prognosis. Co-expression of the two proteins showed more aggressive features with poorer prognosis. In the human breast cancer cell lines MCF7 and SK-BR-3, both proteins were colocalized on the cell membrane mainly at cell-cell attachment sites. Immunoprecipitation and immunofluorescence analyses demonstrated that the 100A14 protein can bind to actin localized on the cell membrane in a calcium-independent manner. A Boyden chamber assay showed that S100A14 and S100A16 knockdown substantially suppressed the invasive activity of both cell lines. Cell motility was also inhibited by S100A14 knockdown in a modified dual color wound-healing assay. Conclusions To our knowledge, this is the first report showing the correlation of expression of S100A14, S100A16, and co-expression of these proteins with poor prognosis of breast cancer patients. In addition, our findings indicate that S100A14 and S100A16 can promote invasive activity of breast cancer cells via an interaction with cytoskeletal dynamics. S100A14 and S100A16 might be prognostic biomarkers and potential therapeutic targets for breast cancer. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1059-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mizuko Tanaka
- Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Naoki Ichikawa-Tomikawa
- Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Namiko Shishito
- Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Keisuke Nishiura
- Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Tomiko Miura
- Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Ayumi Hozumi
- Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Hideki Chiba
- Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Sayaka Yoshida
- Department of Organ Regulatory Surgery, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Tohru Ohtake
- Department of Organ Regulatory Surgery, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan.
| | - Takashi Sugino
- Division of Diagnostic Pathology, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-Gun, Shizuoka, 411-8777, Japan.
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Liu Y, Myrvang HK, Dekker LV. Annexin A2 complexes with S100 proteins: structure, function and pharmacological manipulation. Br J Pharmacol 2014; 172:1664-76. [PMID: 25303710 PMCID: PMC4376447 DOI: 10.1111/bph.12978] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 09/16/2014] [Accepted: 10/05/2014] [Indexed: 12/13/2022] Open
Abstract
Annexin A2 (AnxA2) was originally identified as a substrate of the pp60v-src oncoprotein in transformed chicken embryonic fibroblasts. It is an abundant protein that associates with biological membranes as well as the actin cytoskeleton, and has been implicated in intracellular vesicle fusion, the organization of membrane domains, lipid rafts and membrane-cytoskeleton contacts. In addition to an intracellular role, AnxA2 has been reported to participate in processes localized to the cell surface including extracellular protease regulation and cell-cell interactions. There are many reports showing that AnxA2 is differentially expressed between normal and malignant tissue and potentially involved in tumour progression. An important aspect of AnxA2 function relates to its interaction with small Ca2+-dependent adaptor proteins called S100 proteins, which is the topic of this review. The interaction between AnxA2 and S100A10 has been very well characterized historically; more recently, other S100 proteins have been shown to interact with AnxA2 as well. The biochemical evidence for the occurrence of these protein interactions will be discussed, as well as their function. Recent studies aiming to generate inhibitors of S100 protein interactions will be described and the potential of these inhibitors to further our understanding of AnxA2 S100 protein interactions will be discussed.
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Affiliation(s)
- Yidong Liu
- School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, Nottingham, UK
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25
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Annexin A2 mediates Mycoplasma pneumoniae community-acquired respiratory distress syndrome toxin binding to eukaryotic cells. mBio 2014; 5:mBio.01497-14. [PMID: 25139904 PMCID: PMC4147866 DOI: 10.1128/mbio.01497-14] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Mycoplasma pneumoniae synthesizes a novel human surfactant protein A (SP-A)-binding cytotoxin, designated community-acquired respiratory distress syndrome (CARDS) toxin, that exhibits ADP-ribosylating and vacuolating activities in mammalian cells and is directly linked to a range of acute and chronic airway diseases, including asthma. In our attempt to detect additional CARDS toxin-binding proteins, we subjected the membrane fraction of human A549 airway cells to affinity chromatography using recombinant CARDS toxin as bait. A 36-kDa A549 cell membrane protein bound to CARDS toxin and was identified by time of flight (TOF) mass spectroscopy as annexin A2 (AnxA2) and verified by immunoblotting with anti-AnxA2 monoclonal antibody. Dose-dependent binding of CARDS toxin to recombinant AnxA2 reinforced the specificity of the interaction, and further studies revealed that the carboxy terminus of CARDS toxin mediated binding to AnxA2. In addition, pretreatment of viable A549 cells with anti-AnxA2 monoclonal antibody or AnxA2 small interfering RNA (siRNA) reduced toxin binding and internalization. Immunofluorescence analysis of CARDS toxin-treated A549 cells demonstrated the colocalization of CARDS toxin with cell surface-associated AnxA2 upon initial binding and with intracellular AnxA2 following toxin internalization. HepG2 cells, which express low levels of AnxA2, were transfected with a plasmid expressing AnxA2 protein, resulting in enhanced binding of CARDS toxin and increased vacuolization. In addition, NCI-H441 cells, which express both AnxA2 and SP-A, upon AnxA2 siRNA transfection, showed decreased binding and subsequent vacuolization. These results indicate that CARDS toxin recognizes AnxA2 as a functional receptor, leading to CARDS toxin-induced changes in mammalian cells. Host cell susceptibility to bacterial toxins is usually determined by the presence and abundance of appropriate receptors, which provides a molecular basis for toxin target cell specificities. To perform its ADP-ribosylating and vacuolating activities, community-acquired respiratory distress syndrome (CARDS) toxin must bind to host cell surfaces via receptor-mediated events in order to be internalized and trafficked effectively. Earlier, we reported the binding of CARDS toxin to surfactant protein A (SP-A), and here we show how CARDS toxin uses an alternative receptor to execute its pathogenic properties. CARDS toxin binds selectively to annexin A2 (AnxA2), which exists both on the cell surface and intracellularly. Since AnxA2 regulates membrane dynamics at early stages of endocytosis and trafficking, it serves as a distinct receptor for CARDS toxin binding and internalization and enhances CARDS toxin-induced vacuolization in mammalian cells.
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26
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Dynamic reciprocity: the role of annexin A2 in tissue integrity. J Cell Commun Signal 2014; 8:125-33. [PMID: 24838661 DOI: 10.1007/s12079-014-0231-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 04/29/2014] [Indexed: 01/09/2023] Open
Abstract
Interactions between cells and the extracellular matrix are integral to tissue development, remodelling and pathogenesis. This is underlined by bi-directional flow of information signalling, referred to as dynamic reciprocity. Annexin A2 is a complex and multifunctional protein that belongs to a large family of Ca(2+)-dependent anionic phospholipid and membrane-binding proteins. It has been implicated in diverse cellular processes at the nuclear, cytoplasmic and extracellular compartments including Ca(2+)-dependent regulation of endocytosis and exocytosis, focal adhesion dynamics, transcription and translation, cell proliferation, oxidative stress and apoptosis. Most of these functions are mediated by the annexin A2-S100A10 heterotetramer (AIIt) via its ability to simultaneously interact with cytoskeletal, membrane and extracellular matrix components, thereby mediating regulatory effects of extracellular matrix adhesion on cell behaviour and vice versa. While Src kinase-mediated phosphorylation of filamentous actin-bound AIIt results in membrane-cytoskeletal remodelling events which control cell polarity, cell morphology and cell migration, AIIt at the cell surface can bind to a number of extracellular matrix proteins and catalyse the activation of serine and cysteine proteases which are important in facilitating tissue remodelling during tissue repair, neoangiogenesis and pathological situations. This review will focus on the role of annexin A2 in regulating tissue integrity through intercellular and cell-extracellular matrix interaction. Annexin A2 is differentially expressed in various tissue types as well as in many pathologies, particularly in several types of cancer. These together suggest that annexin A2 acts as a central player during dynamic reciprocity in tissue homeostasis.
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27
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Houston S, Russell S, Hof R, Roberts AK, Cullen P, Irvine K, Smith DS, Borchers CH, Tonkin ML, Boulanger MJ, Cameron CE. The multifunctional role of the pallilysin-associated Treponema pallidum protein, Tp0750, in promoting fibrinolysis and extracellular matrix component degradation. Mol Microbiol 2014; 91:618-34. [PMID: 24303899 PMCID: PMC3954913 DOI: 10.1111/mmi.12482] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2013] [Indexed: 12/25/2022]
Abstract
The mechanisms that facilitate dissemination of the highly invasive spirochaete, Treponema pallidum, are incompletely understood. Previous studies showed the treponemal metalloprotease pallilysin (Tp0751) possesses fibrin clot degradation capability, suggesting a role in treponemal dissemination. In the current study we report characterization of the functionally linked protein Tp0750. Structural modelling predicts Tp0750 contains a von Willebrand factor type A (vWFA) domain, a protein-protein interaction domain commonly observed in extracellular matrix (ECM)-binding proteins. We report Tp0750 is a serine protease that degrades the major clot components fibrinogen and fibronectin. We also demonstrate Tp0750 cleaves a matrix metalloprotease (MMP) peptide substrate that is targeted by several MMPs, enzymes central to ECM remodelling. Through proteomic analyses we show Tp0750 binds the endothelial fibrinolytic receptor, annexin A2, in a specific and dose-dependent manner. These results suggest Tp0750 constitutes a multifunctional protein that is able to (1) degrade infection-limiting clots by both inhibiting clot formation through degradation of host coagulation cascade proteins and promoting clot dissolution by complexing with host proteins involved in the fibrinolytic cascade and (2) facilitate ECM degradation via MMP-like proteolysis of host components. We propose that through these activities Tp0750 functions in concert with pallilysin to enable T. pallidum dissemination.
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Affiliation(s)
- Simon Houston
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Shannon Russell
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Rebecca Hof
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Alanna K. Roberts
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Paul Cullen
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Kyle Irvine
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Derek S. Smith
- University of Victoria-Genome BC Proteomics Centre, Victoria, British Columbia, Canada, V8Z 7X8
| | - Christoph H. Borchers
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
- University of Victoria-Genome BC Proteomics Centre, Victoria, British Columbia, Canada, V8Z 7X8
| | - Michelle L. Tonkin
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Martin J. Boulanger
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
| | - Caroline E. Cameron
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada V8W 3P6
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28
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Myrvang HK, Guo X, Li C, Dekker LV. Protein interactions between surface annexin A2 and S100A10 mediate adhesion of breast cancer cells to microvascular endothelial cells. FEBS Lett 2013; 587:3210-5. [PMID: 23994525 DOI: 10.1016/j.febslet.2013.08.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 07/16/2013] [Accepted: 08/11/2013] [Indexed: 01/25/2023]
Abstract
Annexin A2 (AnxA2) and S100A10 are known to form a molecular complex. Using fluorescence-based binding assays, we show that both proteins are localised on the cell surface, in a molecular form that allows mutual interaction. We hypothesized that binding between these proteins could facilitate cell-cell interactions. For cells that express surface S100A10 and surface annexin A2, cell-cell interactions can be blocked by competing with the interaction between these proteins. Thus an annexin A2-S100A10 molecular bridge participates in cell-cell interactions, revealing a hitherto unexplored function of this protein interaction.
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Affiliation(s)
- Helene K Myrvang
- School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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29
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Van Itallie CM, Aponte A, Tietgens AJ, Gucek M, Fredriksson K, Anderson JM. The N and C termini of ZO-1 are surrounded by distinct proteins and functional protein networks. J Biol Chem 2013; 288:13775-88. [PMID: 23553632 DOI: 10.1074/jbc.m113.466193] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Biotin ligase tagging with ZO-1 was applied to identify a more complete tight junction proteome. RESULTS Identical but also different proteins and functional networks were identified near the N and C ends of ZO-1. CONCLUSION The ends of ZO-1 are embedded in different functional subcompartments of the tight junction. SIGNIFICANCE Biotin tagging with ZO-1 expands the tight junction proteome and defines subcompartments of the junction. The proteins and functional protein networks of the tight junction remain incompletely defined. Among the currently known proteins are barrier-forming proteins like occludin and the claudin family; scaffolding proteins like ZO-1; and some cytoskeletal, signaling, and cell polarity proteins. To define a more complete list of proteins and infer their functional implications, we identified the proteins that are within molecular dimensions of ZO-1 by fusing biotin ligase to either its N or C terminus, expressing these fusion proteins in Madin-Darby canine kidney epithelial cells, and purifying and identifying the resulting biotinylated proteins by mass spectrometry. Of a predicted proteome of ∼9000, we identified more than 400 proteins tagged by biotin ligase fused to ZO-1, with both identical and distinct proteins near the N- and C-terminal ends. Those proximal to the N terminus were enriched in transmembrane tight junction proteins, and those proximal to the C terminus were enriched in cytoskeletal proteins. We also identified many unexpected but easily rationalized proteins and verified partial colocalization of three of these proteins with ZO-1 as examples. In addition, functional networks of interacting proteins were tagged, such as the basolateral but not apical polarity network. These results provide a rich inventory of proteins and potential novel insights into functions and protein networks that should catalyze further understanding of tight junction biology. Unexpectedly, the technique demonstrates high spatial resolution, which could be generally applied to defining other subcellular protein compartmentalization.
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Affiliation(s)
- Christina M Van Itallie
- Laboratory of Tight Junction Structure and Function, NHLBI, National Institutes of Health, Bethesda, MD 20892, USA.
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30
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Annexin A2 heterotetramer: structure and function. Int J Mol Sci 2013; 14:6259-305. [PMID: 23519104 PMCID: PMC3634455 DOI: 10.3390/ijms14036259] [Citation(s) in RCA: 218] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 03/02/2013] [Accepted: 03/05/2013] [Indexed: 12/12/2022] Open
Abstract
Annexin A2 is a pleiotropic calcium- and anionic phospholipid-binding protein that exists as a monomer and as a heterotetrameric complex with the plasminogen receptor protein, S100A10. Annexin A2 has been proposed to play a key role in many processes including exocytosis, endocytosis, membrane organization, ion channel conductance, and also to link F-actin cytoskeleton to the plasma membrane. Despite an impressive list of potential binding partners and regulatory activities, it was somewhat unexpected that the annexin A2-null mouse should show a relatively benign phenotype. Studies with the annexin A2-null mouse have suggested important functions for annexin A2 and the heterotetramer in fibrinolysis, in the regulation of the LDL receptor and in cellular redox regulation. However, the demonstration that depletion of annexin A2 causes the depletion of several other proteins including S100A10, fascin and affects the expression of at least sixty-one genes has confounded the reports of its function. In this review we will discuss the annexin A2 structure and function and its proposed physiological and pathological roles.
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31
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Grieve AG, Moss SE, Hayes MJ. Annexin A2 at the interface of actin and membrane dynamics: a focus on its roles in endocytosis and cell polarization. Int J Cell Biol 2012; 2012:852430. [PMID: 22505935 PMCID: PMC3296266 DOI: 10.1155/2012/852430] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 11/16/2011] [Accepted: 12/13/2011] [Indexed: 12/15/2022] Open
Abstract
Annexins are a family of calcium- and phospholipid-binding proteins found in nearly all eukaryotes. They are structurally highly conserved and have been implicated in a wide range of cellular activities. In this paper, we focus on Annexin A2 (AnxA2). Altered expression of this protein has been identified in a wide variety of cancers, has also been found on the HIV particle, and has been implicated in the maturation of the virus. Recently, it has also been shown to have an important role in the establishment of normal apical polarity in epithelial cells. We synthesize here the known biochemical properties of this protein and the extensive literature concerning its involvement in the endocytic pathway. We stress the importance of AnxA2 as a platform for actin remodeling in the vicinity of dynamic cellular membranes, in the hope that this may shed light on the normal functions of the protein and its contribution to disease.
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Affiliation(s)
- Adam G. Grieve
- Hubrecht Institute for Developmental Biology and Stem Cell Research, Uppsalalaan 8, 3584CT Utrecht, The Netherlands
| | - Stephen E. Moss
- Division of Cell Biology, UCL Institute of Ophthalmology, 11-43 Bath Street, EC1V 9EL London, UK
| | - Matthew J. Hayes
- Division of Cell Biology, UCL Institute of Ophthalmology, 11-43 Bath Street, EC1V 9EL London, UK
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32
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Liu L, Ivanov AV, Gable ME, Jolivel F, Morrill GA, Askari A. Comparative properties of caveolar and noncaveolar preparations of kidney Na+/K+-ATPase. Biochemistry 2011; 50:8664-73. [PMID: 21905705 PMCID: PMC3186040 DOI: 10.1021/bi2009008] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
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To evaluate previously proposed functions of renal caveolar
Na+/K+-ATPase, we modified the standard procedures
for the preparation of the purified membrane-bound kidney enzyme,
separated the caveolar and noncaveolar pools, and compared their properties.
While the subunits of Na+/K+-ATPase (α,β,γ)
constituted most of the protein content of the noncaveolar pool, the
caveolar pool also contained caveolins and major caveolar proteins
annexin-2 tetramer and E-cadherin. Ouabain-sensitive Na+/K+-ATPase activities of the two pools had similar properties
and equal molar activities, indicating that the caveolar enzyme retains
its ion transport function and does not contain nonpumping enzyme.
As minor constituents, both caveolar and noncaveolar pools also contained
Src, EGFR, PI3K, and several other proteins known to be involved in
stimulous-induced signaling by Na+/K+-ATPase,
indicating that signaling function is not limited to the caveolar
pool. Endogenous Src was active in both pools but was not further
activated by ouabain, calling into question direct interaction of
Src with native Na+/K+-ATPase. Chemical cross-linking,
co-immunoprecipitation, and immunodetection studies showed that in
the caveolar pool, caveolin-1 oligomers, annexin-2 tetramers, and
oligomers of the α,β,γ-protomers of Na+/K+-ATPase form a large multiprotein complex. In conjunction
with known roles of E-cadherin and the β-subunit of Na+/K+-ATPase in cell adhesion and noted intercellular β,β-contacts
within the structure of Na+/K+-ATPase, our findings
suggest that interacting caveolar Na+/K+-ATPases
located at renal adherens junctions maintain contact of two adjacent
cells, conduct essential ion pumping, and are capable of locus-specific
signaling in junctional cells.
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Affiliation(s)
- Lijun Liu
- Department of Biochemistry and Cancer Biology, University of Toledo Health Science Campus, Toledo, Ohio 43614, United States
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Identification of a conserved membrane localization domain within numerous large bacterial protein toxins. Proc Natl Acad Sci U S A 2010; 107:5581-6. [PMID: 20212166 DOI: 10.1073/pnas.0908700107] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Vibrio cholerae is the causative agent of the diarrheal disease cholera. Many virulence factors contribute to intestinal colonization and disease including the Multifunctional Autoprocessing RTX toxin (MARTX(Vc)). The Rho-inactivation domain (RID) of MARTX(Vc) is responsible for inactivating the Rho-family of small GTPases, which leads to depolymerization of the actin cytoskeleton. Based on a deletion analysis of RID to determine the minimal functional domain, we have identified a subdomain at the N terminus of RID that is homologous to the membrane targeting C1 domain of Pasteurella multocida toxin. A GFP fusion to this subdomain from RID colocalized with a plasma membrane marker when transiently expressed within HeLa cells and can be found in the membrane fraction following subcellular fractionation. This C1-like subdomain is present in multiple families of bacterial toxins, including all of the clostridial glucosyltransferase toxins and various MARTX toxins. GFP-fusions to these homologous domains are also membrane associated, indicating that this is a conserved membrane localization domain (MLD). We have identified three residues (Y23, S68, R70) as necessary for proper localization of one but not all MLDs. In addition, we found that substitution of the RID MLD with the MLDs from two different effector domains from the Vibrio vulnificus MARTX toxin restored RID activity, indicating that there is functional overlap between these MLDs. This study describes the initial recognition of a family of conserved plasma membrane-targeting domains found in multiple large bacterial toxins.
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Schneeberger EE. Morphological Studies of Claudins in the Tight Junction. CURRENT TOPICS IN MEMBRANES 2010. [DOI: 10.1016/s1063-5823(10)65002-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Schulz DM, Kalkhof S, Schmidt A, Ihling C, Stingl C, Mechtler K, Zschörnig O, Sinz A. Annexin A2/P11 interaction: new insights into annexin A2 tetramer structure by chemical crosslinking, high-resolution mass spectrometry, and computational modeling. Proteins 2009; 69:254-69. [PMID: 17607745 DOI: 10.1002/prot.21445] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
During the past few years, the structural analysis of proteins and protein complexes by chemical crosslinking and mass spectrometry has enjoyed increasing popularity. With this approach we have investigated the quaternary structure of the complex between annexin A2 and p11, which is involved in numerous cellular processes. Although high-resolution data are available for both interaction partners as well as for the complex between two p11 subunits and two annexin A2 N-terminal peptides, the structure of the complete annexin A2/p11 heterotetramer has not yet been solved at high resolution. Thus, the quaternary structure of the biologically relevant, membrane-bound annexin A2/p11 complex is still under discussion, while the existence of a heterotetramer or a heterooctamer is the prevailing opinion. We gained further insight into the spatial organization of the annexin A2/p11 heterotetramer by employing chemical crosslinking combined with high-resolution mass spectrometry. Furthermore, tandem mass spectrometry served as a tool for an exact localization of crosslinked amino acid residues and for a confirmation of crosslinked product assignment. On the basis of distance constraints from the crosslinking data we derived structural models of the annexin A2/p11 heterotetramer by computational docking with Rosetta. We propose an octameric model for the annexin A2/p11 complex, which exerts annexin A2 function. The proposed structure of the annexin A2/p11 octamer differs from so far suggested models and sheds new light into annexin A2/p11 interaction.
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Affiliation(s)
- Daniela M Schulz
- Biotechnological-Biomedical Center, Faculty of Chemistry and Mineralogy, University of Leipzig, D-04103 Leipzig, Germany
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Inokuchi J, Narula N, Yee DS, Skarecky DW, Lau A, Ornstein DK, Tyson DR. Annexin A2 positively contributes to the malignant phenotype and secretion of IL-6 in DU145 prostate cancer cells. Int J Cancer 2009; 124:68-74. [PMID: 18924133 DOI: 10.1002/ijc.23928] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Several groups, including ours, have reported that annexin A2 (ANXA2) expression is reduced in most prostate cancer (CaP). More recently, however, we reported that ANXA2 is expressed in some high-grade tumors, but the biologic consequence of this is currently unknown. To elucidate the function of ANXA2 in CaP, we reduced its expression in DU145 cells using shRNA and tested the impact on characteristics of malignancy. Reduction of ANXA2 suppressed anchorage-dependent and -independent cell growth without affecting invasiveness. Interestingly, interleukin-6 (IL-6) secretion was reduced concomitantly with the reduction of ANXA2 but independently of S100A10. IL-6 expression was restored when wild type but not mutant ANXA2 was reexpressed in these cells. In a retrospective study of radical prostatectomy specimens from patients with nonmetastatic CaP, 100% of patients with ANXA2-positive tumors (n = 4) had a biochemical relapse while only 50% of patients with ANXA2 negative tumors (n = 20) relapsed, suggesting that ANXA2 expression in prostate tumors may be predictive of biochemical relapse. Significant cytoplasmic staining of ANXA2 was detected in 3 of 4 ANXA2-positive tumors, whereas ANXA2 is localized to the plasma membrane in benign prostatic glands. These finding, taken together, suggests a possible mechanism whereby ANXA2 expression positively contributes to an aggressive phenotype in a subset of CaP and suggest that ANXA2 has markedly different functions depending on its cellular context. Finally, this is the first description of a role for ANXA2 in IL-6 expression, and ANXA2 represents a new therapeutic target for reducing IL-6 in high-grade prostate cancer.
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Affiliation(s)
- Junichi Inokuchi
- Department of Urology, University of California Irvine, Orange, CA, USA
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Lee DBN, Jamgotchian N, Allen SG, Abeles MB, Ward HJ. A lipid-protein hybrid model for tight junction. Am J Physiol Renal Physiol 2008; 295:F1601-12. [PMID: 18701633 PMCID: PMC2604825 DOI: 10.1152/ajprenal.00097.2008] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Accepted: 08/11/2008] [Indexed: 11/22/2022] Open
Abstract
The epithelial tight junction (TJ) was first described ultrastructurally as a fusion of the outer lipid leaflets of the adjoining cell membrane bilayers (hemifusion). The discovery of an increasing number of integral TJ and TJ-associated proteins has eclipsed the original lipid-based model with the wide acceptance of a protein-centric model for the TJ. In this review, we stress the importance of lipids in TJ structure and function. A lipid-protein hybrid model accommodates a large body of information supporting the lipidic characteristics of the TJ, harmonizes with the accumulating evidence supporting the TJ as an assembly of lipid rafts, and focuses on an important, but relatively unexplored, field of lipid-protein interactions in the morphology, physiology, and pathophysiology of the TJ.
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Affiliation(s)
- David B N Lee
- Dept. of Medicine (111 VA Medical Center, 16111 Plummer St., North Hills, CA 91343, USA.
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Functional involvement of Annexin-2 in cAMP induced AQP2 trafficking. Pflugers Arch 2008; 456:729-36. [PMID: 18389276 DOI: 10.1007/s00424-008-0453-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2007] [Revised: 01/09/2008] [Accepted: 01/11/2008] [Indexed: 10/22/2022]
Abstract
Annexin-2 is required for the apical transport in epithelial cells. In this study, we investigated the involvement of annexin-2 in cAMP-induced aquaporin-2 (AQP2) translocation to the apical membrane in renal cells. We found that the cAMP-elevating agent forskolin increased annexin-2 abundance in the plasma membrane enriched fraction with a parallel decrease in the soluble fraction. Interestingly, forskolin stimulation resulted in annexin-2 enrichment in lipid rafts, suggesting that hormonal stimulation might be responsible for a new configuration of membrane interacting proteins involved in the fusion of AQP2 vesicles to the apical plasma membrane. To investigate the functional involvement of annexin-2 in AQP2 exocytosis, the fusion process between purified AQP2 membrane vesicles and plasma membranes was reconstructed in vitro and monitored by a fluorescence assay. An N-terminal peptide that comprises 14 residues of annexin-2 and that includes the binding site for the calcium binding protein p11 strongly inhibited the fusion process. Preincubation of cells with this annexin-2 peptide also failed to increase the osmotic water permeability in the presence of forskolin in intact cells. Altogether, these data demonstrate that annexin-2 is required for cAMP-induced AQP2 exocytosis in renal cells.
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Carbó C, Arderiu G, Escolar G, Fusté B, Cases A, Carrascal M, Abián J, Díaz-Ricart M. Differential Expression of Proteins From Cultured Endothelial Cells Exposed to Uremic Versus Normal Serum. Am J Kidney Dis 2008; 51:603-12. [DOI: 10.1053/j.ajkd.2007.11.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Accepted: 11/28/2007] [Indexed: 02/07/2023]
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Rajasekaran SA, Beyenbach KW, Rajasekaran AK. Interactions of tight junctions with membrane channels and transporters. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2007; 1778:757-69. [PMID: 18086552 DOI: 10.1016/j.bbamem.2007.11.007] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Revised: 11/02/2007] [Accepted: 11/09/2007] [Indexed: 12/22/2022]
Abstract
Tight junctions are unique organelles in epithelial cells. They are localized to the apico-lateral region and essential for the epithelial cell transport functions. The paracellular transport process that occurs via tight junctions is extensively studied and is intricately regulated by various extracellular and intracellular signals. Fine regulation of this transport pathway is crucial for normal epithelial cell functions. Among factors that control tight junction permeability are ions and their transporters. However, this area of research is still in its infancy and much more needs to be learned about how these molecules regulate tight junction structure and functions. In this review we have attempted to compile literature on ion transporters and channels involved in the regulation of tight junctions.
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Affiliation(s)
- Sigrid A Rajasekaran
- The Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA 90095, USA
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Hayashi A, Nakashima K, Yamagishi K, Hoshi T, Suzuki A, Baba H. Localization of annexin II in the paranodal regions and Schmidt-Lanterman incisures in the peripheral nervous system. Glia 2007; 55:1044-52. [PMID: 17549680 DOI: 10.1002/glia.20529] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Annexin II (AX II) is a member of the family of calcium-dependent actin- and phospholipid-binding proteins implicated in numerous intracellular functions such as signal transduction, membrane trafficking, and mRNA transport, as well as in the regulation of membrane/cytoskeleton contacts and extracellular functions. AX II is expressed in the central nervous system (CNS) and is upregulated in some pathological conditions. However, expression and localization of this protein in the peripheral nervous system (PNS) is still uncertain. In the present study, we examined the expression and distribution of AX II in the PNS. By western blot analysis, we found that a higher level of AX II was present in sciatic nerve homogenates than in brain homogenates. RT-PCR of total RNA from rat sciatic nerves revealed that AX II was synthesized within the nerves. Immunohistological analysis showed the characteristic distribution of AX II in Schmidt-Lanterman incisures (SLI) as well as in the paranodal regions. Localization of AX II in the PNS was examined in two mutant mouse models, shiverer and cerebroside sulfotransferase knockout mice, both of which show increased numbers of SLI. The paranodal axo-glial junction is also disrupted in the latter. Interestingly, the staining intensities of AX II in these regions were increased markedly in both mutants, suggesting that not only the numbers but also AX II content in each incisure and paranodal loop were affected. From its characteristic distribution and molecular features, AX II may be important for myelin function in the PNS.
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Affiliation(s)
- Akiko Hayashi
- Department of Molecular Neurobiology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji 192-0392, Japan
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Malaeb SN, Sadowska GB, Stonestreet BS. Effects of maternal treatment with corticosteroids on tight junction protein expression in the cerebral cortex of the ovine fetus with and without exposure to in utero brain ischemia. Brain Res 2007; 1160:11-9. [PMID: 17583681 PMCID: PMC2030494 DOI: 10.1016/j.brainres.2007.05.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Revised: 05/18/2007] [Accepted: 05/23/2007] [Indexed: 11/29/2022]
Abstract
Maternal treatment with corticosteroids reduces blood-brain barrier permeability in premature ovine fetuses and the incidence of intraventricular hemorrhage in premature infants. We tested the hypothesis that maternally administered corticosteroids increase the expression of tight junction (TJ) proteins in the cerebral cortex of ovine fetuses with and without exposure to in utero brain ischemia. Fetuses at 80% of gestation were studied 18 h after the last of four 4-6 mg dexamethasone or placebo injections were given over 48 h to ewes. Groups were placebo/control, dexamethasone/control, placebo/ischemic, and dexamethasone/ischemic. Ischemia consisted of 30 min of fetal carotid artery occlusion and 72 h of reperfusion. Cerebral cortex was snap frozen. Western immunoblot was used to measure the protein expression of occludin, claudin-1, claudin-5, zonula occludens (ZO)-1, and ZO-2, and a TJ accessory protein annexin-ll. Occludin and annexin-ll protein expression were 48% and 58% higher (P<0.05) in the dexamethasone/ischemic than placebo/control group, respectively. Claudin-5 protein expression was 69% and 73% higher (P<0.05) in the placebo/ischemic and dexamethasone/ischemic than placebo/control group. Claudin-1 expression did not differ among groups. ZO-1 protein expression was 25%, 40%, and 55% lower in the dexamethasone/control, placebo/ischemic, and dexamethasone/ischemic than placebo/control group, respectively. ZO-2 expression was 45% and 70% lower (P<0.01) in the placebo/ischemic and dexamethasone/ischemic than placebo/control group. We conclude that maternal corticosteroid treatment differentially regulates the expression of component proteins of TJs in the cerebral cortex of fetuses exposed to brain ischemia. The functional significance of this differential regulation warrants further investigation.
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Affiliation(s)
- Shadi N Malaeb
- Department of Pediatrics, Brown University School of Medicine, Women and Infants' Hospital of Rhode Island, 101 Dudley Street, Providence, RI 02905-240, USA
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Konopka-Postupolska D. Annexins: putative linkers in dynamic membrane-cytoskeleton interactions in plant cells. PROTOPLASMA 2007; 230:203-15. [PMID: 17458635 DOI: 10.1007/s00709-006-0234-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2006] [Accepted: 03/14/2006] [Indexed: 05/08/2023]
Abstract
The plasma membrane, the most external cellular structure, is at the forefront between the plant cell and its environment. Hence, it is naturally adapted to function in detection of external signals, their transduction throughout the cell, and finally, in cell reactions. Membrane lipids and the cytoskeleton, once regarded as simple and static structures, have recently been recognized as significant players in signal transduction. Proteins involved in signal detection and transduction are organised in specific domains at the plasma membrane. Their aggregation allows to bring together and orient the downstream and upstream members of signalling pathways. The cortical cytoskeleton provides a structural framework for rapid signal transduction from the cell periphery into the nucleus. It leads to intracellular reorganisation and wide-scale modulation of cellular metabolism which results in accumulation of newly synthesised proteins and/or secondary metabolites which, in turn, have to be distributed to the appropriate cell compartments. And again, in plant cells, the secretory vesicles that govern polar cellular transport are delivered to their target membranes by interaction with actin microfilaments. In search for factors that could govern subsequent steps of the cell response delineated above we focused on an evolutionary conserved protein family, the annexins, that bind in a calcium-dependent manner to membrane phospholipids. Annexins were proposed to regulate dynamic changes in membrane architecture and to organise the interface between secretory vesicles and the membrane. Certain proteins from this family were also identified as actin binding, making them ideal mediators in cell membrane and cytoskeleton interactions.
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Affiliation(s)
- D Konopka-Postupolska
- Laboratory of Plant Pathogenesis, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
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Hayes MJ, Shao D, Bailly M, Moss SE. Regulation of actin dynamics by annexin 2. EMBO J 2006; 25:1816-26. [PMID: 16601677 PMCID: PMC1456940 DOI: 10.1038/sj.emboj.7601078] [Citation(s) in RCA: 153] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2005] [Accepted: 03/13/2006] [Indexed: 12/27/2022] Open
Abstract
Annexin 2 is a ubiquitous Ca(2+)-binding protein that is essential for actin-dependent vesicle transport. Here, we show that in spontaneously motile cells annexin 2 is concentrated in dynamic actin-rich protrusions, and that depletion of annexin 2 using siRNA leads to the accumulation of stress fibres and loss of protrusive and retractile activity. Cells co-expressing annexin 2-CFP and actin-YFP exhibit Ca(2+)-dependent fluorescense resonance energy transfer throughout the cytoplasm and in membrane ruffles and protrusions, suggesting that annexin 2 may directly interact with actin. This notion was supported by biochemical studies, in which we show that annexin 2 reduces the polymerisation rate of actin monomers in a dose-dependent manner. By measuring actin polymerisation rates in the presence of barbed-end and pointed-end cappers, we further demonstrate that annexin 2 specifically inhibits filament elongation at the barbed ends. These results show that annexin 2 has an essential role in maintaining the plasticity of the dynamic membrane-associated actin cytoskeleton, and that its activity in this context may be at least partly explained through direct interactions with polymerised and monomeric actin.
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Affiliation(s)
- Matthew J Hayes
- Division of Cell Biology, Institute of Ophthalmology, University College London, London, UK
| | - Dongmin Shao
- Division of Cell Biology, Institute of Ophthalmology, University College London, London, UK
| | - Maryse Bailly
- Division of Cell Biology, Institute of Ophthalmology, University College London, London, UK
| | - Stephen E Moss
- Division of Cell Biology, Institute of Ophthalmology, University College London, London, UK
- Division of Cell Biology, Institute of Ophthalmology, University College London, 11-43 Bath Street, London EC1V 9EL, UK. Tel.: +44 207 608 6973; Fax: +44 207 608 4034; E-mail:
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Lenaerts K, Mariman E, Bouwman F, Renes J. Differentiation stage-dependent preferred uptake of basolateral (systemic) glutamine into Caco-2 cells results in its accumulation in proteins with a role in cell-cell interaction. FEBS J 2005; 272:3350-64. [PMID: 15978041 DOI: 10.1111/j.1742-4658.2005.04750.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Glutamine is an essential amino acid for enterocytes, especially in states of critical illness and injury. In several studies it has been speculated that the beneficial effects of glutamine are dependent on the route of supply (luminal or systemic). The aim of this study was to investigate the relevance of both routes of glutamine delivery to in vitro intestinal cells and to explore the molecular basis for proposed beneficial glutamine effects: (a) by determining the relative uptake of radiolabelled glutamine in Caco-2 cells; (b) by assessing the effect of glutamine on the proteome of Caco-2 cells using a 2D gel electrophoresis approach; and (c) by examining glutamine incorporation into cellular proteins using a new mass spectrometry-based method with stable isotope labelled glutamine. Results of this study show that exogenous glutamine is taken up by Caco-2 cells from both the apical and the basolateral side. Basolateral uptake consistently exceeds apical uptake and this phenomenon is more pronounced in 5-day-differentiated cells than in 15-day-differentiated cells. No effect of exogenous glutamine supply on the proteome was detected. However, we demonstrated that exogenous glutamine is incorporated into newly synthesized proteins and this occurred at a faster rate from basolateral glutamine, which is in line with the uptake rates. Interestingly, a large number of rapidly labelled proteins is involved in establishing cell-cell interactions. In this respect, our data may point to a molecular basis for observed beneficial effects of glutamine on intestinal cells and support results from studies with critically ill patients where parenteral glutamine supplementation is preferred over luminal supplementation.
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Affiliation(s)
- Kaatje Lenaerts
- Maastricht Proteomics Center, Nutrition and Toxicology Research Institute Maastricht (NUTRIM), Department of Human Biology, Maastricht University, the Netherlands.
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Current World Literature. Curr Opin Nephrol Hypertens 2005. [DOI: 10.1097/01.mnh.0000172731.05865.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Roux KJ, Amici SA, Fletcher BS, Notterpek L. Modulation of epithelial morphology, monolayer permeability, and cell migration by growth arrest specific 3/peripheral myelin protein 22. Mol Biol Cell 2005; 16:1142-51. [PMID: 15635102 PMCID: PMC551480 DOI: 10.1091/mbc.e04-07-0551] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Peripheral myelin protein 22 (PMP22) is associated with a subset of hereditary peripheral neuropathies. Although predominantly recognized as a transmembrane constituent of peripheral nerve myelin, PMP22 is localized to epithelial and endothelial cell-cell junctions, where its function remains unknown. In this report, we investigated the role of PMP22 in epithelial biology. Expression of human PMP22 (hPMP22) slows cell growth and induces a flattened morphology in Madin-Darby canine kidney (MDCK) cells. The transepithelial electrical resistance (TER) and paracellular flux of MDCK monolayers are elevated by hPMP22 expression. After calcium switch, peptides corresponding to the second, but not the first, extracellular loop of PMP22 perturb the recovery of TER and paracellular flux. Finally, subsequent to wounding, epithelial monolayers expressing hPMP22 fail to migrate normally. These results indicate that PMP22 is capable of modulating several aspects of epithelial cell biology, including junctional permeability and wound closure.
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Affiliation(s)
- Kyle J Roux
- Departments of Neuroscience and Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL 32610, USA
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