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Lin AT, Hammond-Kaarremaa L, Liu HL, Stantis C, McKechnie I, Pavel M, Pavel SSM, Wyss SSÁ, Sparrow DQ, Carr K, Aninta SG, Perri A, Hartt J, Bergström A, Carmagnini A, Charlton S, Dalén L, Feuerborn TR, France CAM, Gopalakrishnan S, Grimes V, Harris A, Kavich G, Sacks BN, Sinding MHS, Skoglund P, Stanton DWG, Ostrander EA, Larson G, Armstrong CG, Frantz LAF, Hawkins MTR, Kistler L. The history of Coast Salish "woolly dogs" revealed by ancient genomics and Indigenous Knowledge. Science 2023; 382:1303-1308. [PMID: 38096292 PMCID: PMC7615573 DOI: 10.1126/science.adi6549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 10/25/2023] [Indexed: 12/18/2023]
Abstract
Ancestral Coast Salish societies in the Pacific Northwest kept long-haired "woolly dogs" that were bred and cared for over millennia. However, the dog wool-weaving tradition declined during the 19th century, and the population was lost. In this study, we analyzed genomic and isotopic data from a preserved woolly dog pelt from "Mutton," collected in 1859. Mutton is the only known example of an Indigenous North American dog with dominant precolonial ancestry postdating the onset of settler colonialism. We identified candidate genetic variants potentially linked with their distinct woolly phenotype. We integrated these data with interviews from Coast Salish Elders, Knowledge Keepers, and weavers about shared traditional knowledge and memories surrounding woolly dogs, their importance within Coast Salish societies, and how colonial policies led directly to their disappearance.
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Affiliation(s)
- Audrey T Lin
- Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
- Richard Gilder Graduate School, American Museum of Natural History, New York, NY, USA
| | - Liz Hammond-Kaarremaa
- Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
- Vancouver Island University, Nanaimo, BC, Canada
| | - Hsiao-Lei Liu
- Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Chris Stantis
- Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
- Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, USA
| | - Iain McKechnie
- Department of Anthropology, University of Victoria, Victoria, BC, Canada
| | - Michael Pavel
- Twana/Skokomish Indian Tribe, Skokomish Nation, WA, USA
| | - Susan sa'hLa mitSa Pavel
- Twana/Skokomish Indian Tribe, Skokomish Nation, WA, USA
- Coast Salish Wool Weaving Center, Skokomish Nation, WA, USA
- The Evergreen State College, Olympia, WA, USA
| | | | | | | | - Sabhrina Gita Aninta
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
| | - Angela Perri
- Department of Anthropology, Texas A&M University, College Station, TX, USA
- Chronicle Heritage, Phoenix, AZ, USA
| | - Jonathan Hartt
- Department of Indigenous Studies, Simon Fraser University, Burnaby, BC, Canada
| | - Anders Bergström
- Ancient Genomics Laboratory, The Francis Crick Institute, London, UK
- School of Biological Sciences, University of East Anglia, Norwich, UK
| | - Alberto Carmagnini
- Palaeogenomics Group, Institute of Palaeoanatomy, Domestication Research and the History of Veterinary Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Sophy Charlton
- PalaeoBARN, School of Archaeology, University of Oxford, Oxford, UK
- BioArCh, Department of Archaeology, University of York, York, UK
| | - Love Dalén
- Centre for Palaeogenetics, Stockholm, Sweden
- Department of Zoology, Stockholm University, Stockholm, Sweden
- Department of Bioinformatics and Genetics, Swedish Museum of Natural History, Stockholm, Sweden
| | - Tatiana R Feuerborn
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Shyam Gopalakrishnan
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Vaughan Grimes
- Department of Archaeology, Memorial University of Newfoundland, St. Johns, NL, Canada
| | - Alex Harris
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Gwénaëlle Kavich
- Museum Conservation Institute, Smithsonian Institution, Suitland, MD, USA
| | - Benjamin N Sacks
- Mammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA
| | | | - Pontus Skoglund
- Ancient Genomics Laboratory, The Francis Crick Institute, London, UK
| | - David W G Stanton
- Palaeogenomics Group, Institute of Palaeoanatomy, Domestication Research and the History of Veterinary Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- Cardiff School of Biosciences, Cardiff University, Cardiff, UK
| | - Elaine A Ostrander
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Greger Larson
- PalaeoBARN, School of Archaeology, University of Oxford, Oxford, UK
| | - Chelsey G Armstrong
- Department of Indigenous Studies, Simon Fraser University, Burnaby, BC, Canada
| | - Laurent A F Frantz
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
- Palaeogenomics Group, Institute of Palaeoanatomy, Domestication Research and the History of Veterinary Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Melissa T R Hawkins
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Logan Kistler
- Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
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Kulik L, Renner B, Laskowski J, Thurman JM, Michael Holers V. Highly pathogenic natural monoclonal antibody B4-IgM recognizes a post-translational modification comprised of acetylated N-terminal methionine followed by aspartic or glutamic acid. Mol Immunol 2023; 157:112-128. [PMID: 37018938 DOI: 10.1016/j.molimm.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/20/2023] [Accepted: 03/02/2023] [Indexed: 04/05/2023]
Abstract
The natural monoclonal antibody B4-IgM recognizes murine annexin 4 (mAn4) and exacerbates ischemia-reperfusion injury in many mouse models. During apoptosis, the intracellular mAn4 protein translocates to the membrane surface, remaining attached to the outer membrane leaflet where it is recognized by the anti-mAn4 B4-IgM antibody. B4-IgM does not recognize human annexin 4 (hAn4). However, the B4-IgM antibody epitope was detected by Western blot of unknown human proteins and by flow cytometry on all studied human cell lines undergoing apoptosis and on a minor subset of healthy cells. The B4-IgM antibody also recognizes the epitope on necrotic cells in cytoplasmic proteins, apparently entering through pores large enough to allow natural antibodies to penetrate the cells and bind to the epitope expressed on self-proteins. Using proteomics and site-directed mutagenesis, we found that B4-IgM binds to an epitope with post-translationally modified acetylated N-terminal methionine, followed by either glutamic or aspartic acid. The epitope is not induced by apoptosis or injury because this modification can also occur during protein translation. This finding reveals an additional novel mechanism whereby injured cells are detected by natural antibodies that initiate pathogenic complement activation through the recognition of epitopes that are shared across multiple proteins found in variable cell lines.
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Li N, Xi Y, Du H, Zhou H, Xu Z. Annexin A4 Is Dispensable for Hair Cell Development and Function. Front Cell Dev Biol 2021; 9:680155. [PMID: 34150775 PMCID: PMC8209329 DOI: 10.3389/fcell.2021.680155] [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: 03/13/2021] [Accepted: 05/06/2021] [Indexed: 01/11/2023] Open
Abstract
Annexin A4 (ANXA4) is a Ca2+-dependent phospholipid-binding protein that is specifically expressed in the cochlear and vestibular hair cells, but its function in the hair cells remains unknown. In the present study, we show that besides localizing on the plasma membrane, ANXA4 immunoreactivity is also localized at the tips of stereocilia in the hair cells. In order to investigate the role of ANXA4 in the hair cells, we established Anxa4 knockout mice using CRISPR/Cas9 technique. Unexpectedly, the development of both cochlear and vestibular hair cells is normal in Anxa4 knockout mice. Moreover, stereocilia morphology of Anxa4 knockout mice is normal, so is the mechano-electrical transduction (MET) function. Consistently, the auditory and vestibular functions are normal in the knockout mice. In conclusion, we show here that ANXA4 is dispensable for the development and function of hair cells, which might result from functional redundancy between ANXA4 and other annexin(s) in the hair cells.
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Affiliation(s)
- Nana Li
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
| | - Yuehui Xi
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
| | - Haibo Du
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
| | - Hao Zhou
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
| | - Zhigang Xu
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China.,Shandong Provincial Collaborative Innovation Center of Cell Biology, Shandong Normal University, Jinan, China
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Grewal T, Rentero C, Enrich C, Wahba M, Raabe CA, Rescher U. Annexin Animal Models-From Fundamental Principles to Translational Research. Int J Mol Sci 2021; 22:ijms22073439. [PMID: 33810523 PMCID: PMC8037771 DOI: 10.3390/ijms22073439] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 02/07/2023] Open
Abstract
Routine manipulation of the mouse genome has become a landmark in biomedical research. Traits that are only associated with advanced developmental stages can now be investigated within a living organism, and the in vivo analysis of corresponding phenotypes and functions advances the translation into the clinical setting. The annexins, a family of closely related calcium (Ca2+)- and lipid-binding proteins, are found at various intra- and extracellular locations, and interact with a broad range of membrane lipids and proteins. Their impacts on cellular functions has been extensively assessed in vitro, yet annexin-deficient mouse models generally develop normally and do not display obvious phenotypes. Only in recent years, studies examining genetically modified annexin mouse models which were exposed to stress conditions mimicking human disease often revealed striking phenotypes. This review is the first comprehensive overview of annexin-related research using animal models and their exciting future use for relevant issues in biology and experimental medicine.
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Affiliation(s)
- Thomas Grewal
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia;
- Correspondence: (T.G.); (U.R.); Tel.: +61-(0)2-9351-8496 (T.G.); +49-(0)251-83-52121 (U.R.)
| | - Carles Rentero
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, 08036 Barcelona, Spain; (C.R.); (C.E.)
- Centre de Recerca Biomèdica CELLEX, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Carlos Enrich
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, 08036 Barcelona, Spain; (C.R.); (C.E.)
- Centre de Recerca Biomèdica CELLEX, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Mohamed Wahba
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia;
| | - Carsten A. Raabe
- Research Group Regulatory Mechanisms of Inflammation, Center for Molecular Biology of Inflammation (ZMBE) and Cells in Motion Interfaculty Center (CiM), Institute of Medical Biochemistry, University of Muenster, 48149 Muenster, Germany;
| | - Ursula Rescher
- Research Group Regulatory Mechanisms of Inflammation, Center for Molecular Biology of Inflammation (ZMBE) and Cells in Motion Interfaculty Center (CiM), Institute of Medical Biochemistry, University of Muenster, 48149 Muenster, Germany;
- Correspondence: (T.G.); (U.R.); Tel.: +61-(0)2-9351-8496 (T.G.); +49-(0)251-83-52121 (U.R.)
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Zhang Y, Sa G, Zhang Y, Hou S, Wu X, Zhao N, Zhang Y, Deng S, Deng C, Deng J, Zhang H, Yao J, Zhang Y, Zhao R, Chen S. Populus euphratica annexin1 facilitates cadmium enrichment in transgenic Arabidopsis. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124063. [PMID: 33092878 DOI: 10.1016/j.jhazmat.2020.124063] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/02/2020] [Accepted: 09/19/2020] [Indexed: 06/11/2023]
Abstract
Phytoremediation offers a great potential for affordable remediation of heavy metal (HM)-polluted soil and water. Screening and identifying candidate genes related to HM uptake and transport is prerequisite for improvement of phytoremediation by genetic engineering. Using the cadmium (Cd)-hypersensitive Populus euphratica, an annexin encoding gene facilitating Cd enrichment was identified in this study. With a 12 h exposure to CdCl2 (50-100 μM), P. euphratica cells down-regulated transcripts of annexin1 (PeANN1). PeANN1 was homologue to Arabidopsis annexin1 (AtANN1) and localized mainly to the plasma membrane (PM) and cytosol. Compared with wild type and Atann1 mutant, PeANN1 overexpression in Arabidopsis resulted in a more pronounced decline in survival rate and root length after a long-term Cd stress (10 d, 50 μM), due to a higher cadmium accumulation in roots. PeANN1-transgenic roots exhibited enhanced influx conductance of Cd2+ under cadmium shock (30 min, 50 μM) and short-term stress (12 h, 50 μM). Noteworthy, the PeANN1-facilitated Cd2+ influx was significantly inhibited by a calcium-permeable channel (CaPC) inhibitor (GdCl3) but was promoted by 1 mM H2O2, indicating that Cd2+ entered root cells via radical-activated CaPCs in the PM. Therefore, PeANN1 can serve as a candidate gene for improvement of phytoremediation by genetic engineering.
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Affiliation(s)
- Yinan Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China; Forestry Institute of New Technology, Chinese Academy of Forestry, Beijing 100091, China
| | - Gang Sa
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Ying Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Siyuan Hou
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Xia Wu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Nan Zhao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Yuhong Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China; State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Shurong Deng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China; State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Chen Deng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Jiayin Deng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Huilong Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Jun Yao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Yanli Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Rui Zhao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China
| | - Shaoliang Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology (Box 162), Beijing Forestry University, Beijing 100083, China.
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Raouf R, Lolignier S, Sexton JE, Millet Q, Santana-Varela S, Biller A, Fuller AM, Pereira V, Choudhary JS, Collins MO, Moss SE, Lewis R, Tordo J, Henckaerts E, Linden M, Wood JN. Inhibition of somatosensory mechanotransduction by annexin A6. Sci Signal 2018; 11:11/535/eaao2060. [PMID: 29921656 DOI: 10.1126/scisignal.aao2060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Mechanically activated, slowly adapting currents in sensory neurons have been linked to noxious mechanosensation. The conotoxin NMB-1 (noxious mechanosensation blocker-1) blocks such currents and inhibits mechanical pain. Using a biotinylated form of NMB-1 in mass spectrometry analysis, we identified 67 binding proteins in sensory neurons and a sensory neuron-derived cell line, of which the top candidate was annexin A6, a membrane-associated calcium-binding protein. Annexin A6-deficient mice showed increased sensitivity to mechanical stimuli. Sensory neurons from these mice showed increased activity of the cation channel Piezo2, which mediates a rapidly adapting mechano-gated current linked to proprioception and touch, and a decrease in mechanically activated, slowly adapting currents. Conversely, overexpression of annexin A6 in sensory neurons inhibited rapidly adapting currents that were partially mediated by Piezo2. Furthermore, overexpression of annexin A6 in sensory neurons attenuated mechanical pain in a mouse model of osteoarthritis, a disease in which mechanically evoked pain is particularly problematic. These data suggest that annexin A6 can be exploited to inhibit chronic mechanical pain.
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Affiliation(s)
- Ramin Raouf
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | - Stéphane Lolignier
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | - Jane E Sexton
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | - Queensta Millet
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | - Sonia Santana-Varela
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | - Anna Biller
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | - Alice M Fuller
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | - Vanessa Pereira
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK
| | | | - Mark O Collins
- Department of Biomedical Science, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Stephen E Moss
- Institute of Ophthalmology, UCL, 11-43 Bath Street, London EC1V 9EL, UK
| | - Richard Lewis
- Institute for Molecular Bioscience, University of Queensland, Brisbane, St. Lucia, Queensland 4072, Australia
| | - Julie Tordo
- Department of Infectious Diseases, King's College London School of Medicine, London SE1 9RT, UK
| | - Els Henckaerts
- Department of Infectious Diseases, King's College London School of Medicine, London SE1 9RT, UK
| | - Michael Linden
- Department of Infectious Diseases, King's College London School of Medicine, London SE1 9RT, UK
| | - John N Wood
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London (UCL), Gower Street, London WC1E 6BT, UK.
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Grewal T, Wason SJ, Enrich C, Rentero C. Annexins - insights from knockout mice. Biol Chem 2017; 397:1031-53. [PMID: 27318360 DOI: 10.1515/hsz-2016-0168] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 06/14/2016] [Indexed: 12/23/2022]
Abstract
Annexins are a highly conserved protein family that bind to phospholipids in a calcium (Ca2+) - dependent manner. Studies with purified annexins, as well as overexpression and knockdown approaches identified multiple functions predominantly linked to their dynamic and reversible membrane binding behavior. However, most annexins are found at multiple locations and interact with numerous proteins. Furthermore, similar membrane binding characteristics, overlapping localizations and shared interaction partners have complicated identification of their precise functions. To gain insight into annexin function in vivo, mouse models deficient of annexin A1 (AnxA1), A2, A4, A5, A6 and A7 have been generated. Interestingly, with the exception of one study, all mice strains lacking one or even two annexins are viable and develop normally. This suggested redundancy within annexins, but examining these knockout (KO) strains under stress conditions revealed striking phenotypes, identifying underlying mechanisms specific for individual annexins, often supporting Ca2+ homeostasis and membrane transport as central for annexin biology. Conversely, mice lacking AnxA1 or A2 show extracellular functions relevant in health and disease that appear independent of membrane trafficking or Ca2+ signaling. This review will summarize the mechanistic insights gained from studies utilizing mouse models lacking members of the annexin family.
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8
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Katano M, Kurokawa MS, Matsuo K, Masuko K, Suematsu N, Okamoto K, Kamada T, Nakamura H, Kato T. Phosphoproteome analysis of synoviocytes from patients with rheumatoid arthritis. Int J Rheum Dis 2017; 20:708-721. [DOI: 10.1111/1756-185x.12997] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Masayoshi Katano
- Research and Development, Clinical Department; LSI Medience Corporation; Tokyo Japan
- Clinical Proteomics and Molecular Medicine; St. Marianna University Graduate School of Medicine; Kawasaki Japan
| | - Manae S. Kurokawa
- Disease Biomarker Analysis and Molecular Regulation; St. Marianna University Graduate School of Medicine; Kawasaki Japan
| | - Kosuke Matsuo
- Department of Orthopaedic Surgery; Yokohama City University School of Medicine; Yokohama Japan
| | - Kayo Masuko
- Preventive Medical Center; Sanno Hospital Medical Center; Tokyo Japan
| | - Naoya Suematsu
- Clinical Proteomics and Molecular Medicine; St. Marianna University Graduate School of Medicine; Kawasaki Japan
| | - Kazuki Okamoto
- Clinical Proteomics and Molecular Medicine; St. Marianna University Graduate School of Medicine; Kawasaki Japan
| | | | - Hiroshi Nakamura
- Department of Orthopedic Surgery; International University of Health and Welfare; Tokyo Japan
| | - Tomohiro Kato
- Clinical Proteomics and Molecular Medicine; St. Marianna University Graduate School of Medicine; Kawasaki Japan
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Ciaramella MA, Nair MN, Suman SP, Allen PJ, Schilling MW. Differential abundance of muscle proteome in cultured channel catfish (Ictalurus punctatus) subjected to ante-mortem stressors and its impact on fillet quality. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2016; 20:10-18. [PMID: 27484844 DOI: 10.1016/j.cbd.2016.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 06/10/2016] [Accepted: 06/23/2016] [Indexed: 11/19/2022]
Abstract
The effects of environmental and handling stress during catfish (Ictalurus punctatus) aquaculture were evaluated to identify the biochemical alterations they induce in the muscle proteome and their impacts on fillet quality. Temperature (25°C and 33°C) and oxygen (~2.5mg/L [L] and >5mg/L [H]) were manipulated followed by sequential socking (S) and transport (T) stress to evaluate changes in quality when fish were subjected to handling (25-H-ST; temperature-oxygen-handling), oxygen stress (25-L-ST), temperature stress (33-H-ST) and severe stress (33-L-ST). Instrumental color and texture of fillets were evaluated, and muscle proteome profile was analyzed. Fillet redness, yellowness and chroma decreased, and hue angle increased in all treatments except temperature stress (33-H-ST). Alterations in texture compared to controls were observed when oxygen levels were held high. In general, changes in the abundance of structural proteins and those involved in protein regulation and energy metabolism were identified. Rearing under hypoxic conditions demonstrated a shift in metabolism to ketogenic pathways and a suppression of the stress-induced changes as the severity of the stress increased. Increased proteolytic activity observed through the down-regulation of various structural proteins could be responsible for the alterations in color and texture.
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Affiliation(s)
- Michael A Ciaramella
- Mississippi State University, Department of Food Science, Nutrition and Health Promotion, Herzer Building, 945 Stone Blvd, Box 9805, Mississippi State, MS 39762, United States; Mississippi State University, Department Wildlife, Fisheries and Aquaculture, Box 9690, Mississippi State, MS 39762, United States.
| | - Mahesh N Nair
- University of Kentucky, Department of Animal and Food Sciences, Lexington, KY 40546, United States
| | - Surendranath P Suman
- University of Kentucky, Department of Animal and Food Sciences, Lexington, KY 40546, United States.
| | - Peter J Allen
- Mississippi State University, Department Wildlife, Fisheries and Aquaculture, Box 9690, Mississippi State, MS 39762, United States.
| | - M Wes Schilling
- Mississippi State University, Department of Food Science, Nutrition and Health Promotion, Herzer Building, 945 Stone Blvd, Box 9805, Mississippi State, MS 39762, United States.
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10
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A Characeae Cells Plasma Membrane as a Model for Selection of Bioactive Compounds and Drugs: Interaction of HAMLET-Like Complexes with Ion Channels of Chara corallina Cells Plasmalemma. J Membr Biol 2016; 249:801-811. [DOI: 10.1007/s00232-016-9930-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 09/07/2016] [Indexed: 01/10/2023]
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11
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Choi CH, Chung JY, Chung EJ, Sears JD, Lee JW, Bae DS, Hewitt SM. Prognostic significance of annexin A2 and annexin A4 expression in patients with cervical cancer. BMC Cancer 2016; 16:448. [PMID: 27402115 PMCID: PMC4940752 DOI: 10.1186/s12885-016-2459-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 06/23/2016] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND The annexins (ANXs) have diverse roles in tumor development and progression, however, their clinical significance in cervical cancer has not been elucidated. The present study was to investigate the clinical significance of annexin A2 (ANXA2) and annexin A4 (ANXA4) expression in cervical cancer. METHODS ANXA2 and ANXA4 immunohistochemical staining were performed on a cervical cancer tissue microarray consisting of 46 normal cervical epithelium samples and 336 cervical cancer cases and compared the data with clinicopathological variables, including the survival of cervical cancer patients. RESULTS ANXA2 expression was lower in cancer tissue (p = 0.002), whereas ANXA4 staining increased significantly in cancer tissues (p < 0.001). ANXA2 expression was more prominent in squamous cell carcinoma (p < 0.001), whereas ANXA4 was more highly expressed in adeno/adenosquamous carcinoma (p < 0.001). ANXA2 overexpression was positively correlated with advanced cancer phenotypes, whereas ANXA4 expression was associated with resistance to radiation with or without chemotherapy (p = 0.029). Notably, high ANXA2 and ANXA4 expression was significantly associated with shorter disease-free survival (p = 0.004 and p = 0.033, respectively). Multivariate analysis indicated that ANXA2+ (HR = 2.72, p = 0.003) and ANXA2+/ANXA4+ (HR = 2.69, p = 0.039) are independent prognostic factors of disease-free survival in cervical cancer. Furthermore, a random survival forest model using combined ANXA2, ANXA4, and clinical variables resulted in improved predictive power (mean C-index, 0.76) compared to that of clinical-variable-only models (mean C-index, 0.70) (p = 0.006). CONCLUSIONS These findings indicate that detecting ANXA2 and ANXA4 expression may aid the evaluation of cervical carcinoma prognosis.
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Affiliation(s)
- Chel Hun Choi
- Experimental Pathology Laboratory, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, MSC 1500, Bethesda, MD, 20892, USA.,Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Joon-Yong Chung
- Experimental Pathology Laboratory, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, MSC 1500, Bethesda, MD, 20892, USA
| | - Eun Joo Chung
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institute of Health, Bethesda, MD, 20892, USA
| | - John D Sears
- Experimental Pathology Laboratory, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, MSC 1500, Bethesda, MD, 20892, USA
| | - Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul, 135-710, Republic of Korea
| | - Duk-Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul, 135-710, Republic of Korea.
| | - Stephen M Hewitt
- Experimental Pathology Laboratory, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, MSC 1500, Bethesda, MD, 20892, USA.
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12
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Wei B, Guo C, Liu S, Sun MZ. Annexin A4 and cancer. Clin Chim Acta 2015; 447:72-8. [PMID: 26048190 DOI: 10.1016/j.cca.2015.05.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 01/30/2023]
Abstract
Annexin A4 (Anxa4) is one of the Ca(2+)-regulated and phospholipid-binding annexin superfamily proteins. Anxa4 has a potential role in diagnosis, prognosis, and treatment of certain cancers. Studies indicate that Anxa4 up-regulation promotes the progression of tumor and chemoresistance of colorectal cancer (CRC), esophageal squamous cell carcinoma (ESCC), endometrial carcinoma (EC), gastric cancer (GC), chemoresistant lung cancer (LC), malignant mesothelioma (MM), renal cell carcinoma (RCC), ovarian clear cell carcinoma (OCCC), cholangiocarcinoma, hepatocellular carcinoma (HCC), breast cancer (BC), and laryngeal cancer. Interestingly, Anxa4 also might specifically function as a tumor suppressor for prostate cancer (PCa) and have a paradoxical role for pancreatic cancer (PCC). Differential expression of Anxa4 may distinguish major salivary gland tumor (MSGT) from thyroid cancer. In addition, its differential expression was linked to Sirt1-induced cisplatin resistance of oral squamous cell carcinoma (OSCC) and miR-7-induced migration and invasion inhibition of glioma. This current review summarizes and discusses the clinical significance of Anxa4 in cancer as well as its potential mechanisms of action. It may provide new integrative understanding for future studies on the exact role of Anxa4 in cancer.
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Affiliation(s)
- Bin Wei
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
| | - Chunmei Guo
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China
| | - Shuqing Liu
- Department of Biochemistry, Dalian Medical University, Dalian 116044, China
| | - Ming-Zhong Sun
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China.
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13
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Heinick A, Husser X, Himmler K, Kirchhefer U, Nunes F, Schulte JS, Seidl MD, Rolfes C, Dedman JR, Kaetzel MA, Gerke V, Schmitz W, Müller FU. Annexin A4 is a novel direct regulator of adenylyl cyclase type 5. FASEB J 2015; 29:3773-87. [PMID: 26023182 DOI: 10.1096/fj.14-269837] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 05/12/2015] [Indexed: 12/14/2022]
Abstract
Annexin A4 (AnxA4), a Ca(2+)- and phospholipid-binding protein, is up-regulated in the human failing heart. In this study, we examined the impact of AnxA4 on β-adrenoceptor (β-AR)/cAMP-dependent signal transduction. Expression of murine AnxA4 in human embryonic kidney (HEK)293 cells dose-dependently inhibited cAMP levels after direct stimulation of adenylyl cyclases (ACs) with forskolin (FSK), as determined with an exchange protein activated by cAMP-Förster resonance energy transfer (EPAC-FRET) sensor and an ELISA (control vs. +AnxA4: 1956 ± 162 vs. 1304 ± 185 fmol/µg protein; n = 8). Disruption of the anxA4 gene led to a consistent increase in intracellular cAMP levels in isolated adult mouse cardiomyocytes, with heart-directed expression of the EPAC-FRET sensor, stimulated with FSK, and as determined by ELISA, also in mouse cardiomyocytes stimulated with the β-AR agonist isoproterenol (ISO) (anxA4a(+/+) vs. anxA4a(-/-): 5.1 ± 0.3 vs. 6.7 ± 0.6 fmol/µg protein) or FSK (anxA4a(+/+) vs. anxA4a(-/-): 1891 ± 238 vs. 2796 ± 343 fmol/µg protein; n = 9-10). Coimmunoprecipitation experiments in HEK293 cells revealed a direct interaction of murine AnxA4 with human membrane-bound AC type 5 (AC5). As a functional consequence of AnxA4-mediated AC inhibition, AnxA4 inhibited the FSK-induced transcriptional activation mediated by the cAMP response element (CRE) in reporter gene studies (10-fold vs. control; n = 4 transfections) and reduced the FSK-induced phosphorylation of the CRE-binding protein (CREB) measured on Western blots (control vs. +AnxA4: 150 ± 17% vs. 105 ± 10%; n = 6) and by the use of the indicator of CREB activation caused by phosphorylation (ICAP)-FRET sensor, indicating CREB phosphorylation. Inactivation of AnxA4 in anxA4a(-/-) mice was associated with an increased cardiac response to β-AR stimulation. Together, these results suggest that AnxA4 is a novel direct negative regulator of AC5, adding a new facet to the functions of annexins.
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Affiliation(s)
- Alexander Heinick
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Xenia Husser
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Kirsten Himmler
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Uwe Kirchhefer
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Frank Nunes
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Jan S Schulte
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Matthias D Seidl
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Christina Rolfes
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - John R Dedman
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Marcia A Kaetzel
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Volker Gerke
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Wilhelm Schmitz
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
| | - Frank U Müller
- *Institute of Pharmacology and Toxicology, Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation, and Interdisciplinary Clinical Research Center, University of Münster, Münster, Germany; and Department of Genome Science, University of Cincinnati Genome Research Institute, Cincinnati, Ohio, USA
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14
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Arii Y, Butsusihta K, Fukuoka SI. Role of calcium-binding sites in calcium-dependent membrane association of annexin A4. Biosci Biotechnol Biochem 2015; 79:978-85. [PMID: 25649809 DOI: 10.1080/09168451.2014.1003131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Annexin A4 (Anx4) is a cytosolic calcium-binding protein with four repeat domains, each containing one calcium-binding site (CBS). The protein interacts with the phospholipid membrane through the CBS-coordinated calcium ion, although the role of each CBS in the calcium-dependent association is unclear. To determine the role of each CBS, 15 CBS-abolished variants were produced in various combinations by substitution of a calcium-liganding residue on each CBS by Ala. Various mutant combinations produced different influences on calcium-dependent membrane-binding behavior and on the sodium-dependent dissociation of membrane-bound Anx4. Our data suggest the interaction of Anx4 with the lipid membrane consists of strong and weak interactions. CBSs I and IV mediate formation of strong interactions, while CBSs II and III are important for weak interactions. We also suggest Anx4 binds the lipid membrane through CBSs I and IV in the cytoplasmic fluids.
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Affiliation(s)
- Yasuhiro Arii
- a Department of Food Science and Nutrition , School of Human Environmental Sciences, Mukogawa Women's University , Nishinomiya , Japan
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15
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Al-Gubory KH, Arianmanesh M, Garrel C, Bhattacharya S, Cash P, Fowler PA. Proteomic analysis of the sheep caruncular and intercaruncular endometrium reveals changes in functional proteins crucial for the establishment of pregnancy. Reproduction 2014; 147:599-614. [DOI: 10.1530/rep-13-0600] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The expression and regulation of endometrial proteins are crucial for conceptus implantation and development. However, little is known about site-specific proteome profiles of the mammalian endometrium during the peri-implantation period. We utilised a two-dimensional gel electrophoresis/mass spectrometry-based proteomics approach to compare and identify differentially expressed proteins in sheep endometrium. Caruncular and intercaruncular endometrium were collected on days 12 (C12) and 16 (C16) of the oestrous cycle and at three stages of pregnancy corresponding to conceptus pre-attachment (P12), implantation (P16) and post-implantation (P20). Abundance and localisation changes in differentially expressed proteins were determined by western blot and immunohistochemistry. In caruncular endometrium, 45 protein spots (5% of total spots) altered between day 12 of pregnancy (P12) and P16 while 85 protein spots (10% of total spots) were differentially expressed between P16 and C16. In intercaruncular endometrium, 31 protein spots (2% of total spots) were different between P12 and P16 while 44 protein spots (4% of total spots) showed differential expression between C12 and C16. The pattern of protein changes between caruncle and intercaruncle sites was markedly different. Among the protein spots with implantation-related changes in volume, 11 proteins in the caruncular endometrium and six proteins in the intercaruncular endometrium, with different functions such as protein synthesis and degradation, antioxidant defence, cell structural integrity, adhesion and signal transduction, were identified. Our findings highlight the different but important roles of the caruncular and intercaruncular proteins during early pregnancy.
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16
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Matsuzaki S, Serada S, Morimoto A, Ueda Y, Yoshino K, Kimura T, Naka T. Annexin A4 is a promising therapeutic target for the treatment of platinum-resistant cancers. Expert Opin Ther Targets 2014; 18:403-14. [PMID: 24479491 DOI: 10.1517/14728222.2014.882323] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Platinum drugs are widely used for the treatment of testicular, bladder, ovarian, colorectal, lung and prostate cancers. With regard to ovarian cancer in particular, the prognosis is poor for tumours that are (or have become) platinum-resistant. Determining the mechanism underlying platinum resistance may aid in the identification of therapeutic targets for the treatment of platinum-resistant tumours. AREAS COVERED This review gives an overview of the characteristics and functions of Annexin (Anx) A4, the mechanism of Anx A4-induced platinum resistance, the association between platinum resistance and platinum transporters, recent reports that Anx A4 overexpression promotes the efflux of platinum drugs via platinum transporters and the association between other Anxs and chemoresistance. The reader will gain an understanding of recent studies on the mechanism of Anx A4-induced chemoresistance. Anx A4 represents a therapeutic target for the treatment of Anx A4-overexpressing platinum-resistant tumours. EXPERT OPINION Anx A4 is overexpressed in ovarian clear cell carcinoma (CCC), and enhanced Anx A4 expression induces platinum resistance. Recent studies showed that Anx A4 is also associated with platinum resistance in cancers other than ovarian CCC. Furthermore, other Anxs are reportedly associated with chemoresistance, suggesting a relationship between the Anx family and chemoresistance.
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Affiliation(s)
- Shinya Matsuzaki
- Osaka University Graduate School of Medicine, Department of Obstetrics and Gynecology , 2-2 Yamadaoka Suita, Osaka 565-0871 , Japan
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17
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Crosby KC, Postma M, Hink MA, Zeelenberg CHC, Adjobo-Hermans MJW, Gadella TWJ. Quantitative analysis of self-association and mobility of annexin A4 at the plasma membrane. Biophys J 2013; 104:1875-85. [PMID: 23663830 DOI: 10.1016/j.bpj.2013.02.057] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 02/19/2013] [Accepted: 02/27/2013] [Indexed: 11/19/2022] Open
Abstract
Annexins, found in most eukaryotic species, are cytosolic proteins that are able to bind negatively-charged phospholipids in a calcium-dependent manner. Annexin A4 (AnxA4) has been implicated in diverse cellular processes, including the regulation of exocytosis and ion-transport; however, its precise mechanistic role is not fully understood. AnxA4 has been shown to aggregate on lipid layers upon Ca(2+) binding in vitro, a characteristic that may be critical for its function. We have utilized advanced fluorescence microscopy to discern details on the mobility and self-assembly of AnxA4 after Ca(2+) influx at the plasma membrane in living cells. Total internal reflection microscopy in combination with Förster resonance energy transfer reveals that there is a delay between initial plasma membrane binding and the beginning of self-assembly and this process continues after the cytoplasmic pool has completely relocated. Number-and-brightness analysis suggests that the predominant membrane bound mobile form of the protein is trimeric. There also exists a pool of AnxA4 that forms highly immobile aggregates at the membrane. Fluorescence recovery after photobleaching suggests that the relative proportion of these two forms varies and is correlated with membrane morphology.
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Affiliation(s)
- Kevin C Crosby
- Section of Molecular Cytology, van Leeuwenhoek Centre for Advanced Microscopy, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
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18
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Tian Y, Schreiber R, Wanitchakool P, Kongsuphol P, Sousa M, Uliyakina I, Palma M, Faria D, Traynor-Kaplan AE, Fragata JI, Amaral MD, Kunzelmann K. Control of TMEM16A by INO-4995 and other inositolphosphates. Br J Pharmacol 2013; 168:253-65. [PMID: 22946960 PMCID: PMC3570019 DOI: 10.1111/j.1476-5381.2012.02193.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 07/06/2012] [Accepted: 07/31/2012] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE Ca(2+)-dependent Cl(-) secretion (CaCC) in airways and other tissues is due to activation of the Cl(-) channel TMEM16A (anoctamin 1). Earlier studies suggested that Ca(2+) -activated Cl(-) channels are regulated by membrane lipid inositol phosphates, and that 1-O-octyl-2-O-butyryl-myo-inositol 3,4,5,6-tetrakisphosphate octakis(propionoxymethyl) ester (INO-4995) augments CaCC. Here we examined whether TMEM16A is the target for INO-4995 and if the channel is regulated by inositol phosphates. EXPERIMENTAL APPROACH The effects of INO-4995 on CaCC were examined in overexpressing HEK293, colonic and primary airway epithelial cells as well as Xenopus oocytes. We used patch clamping, double electrode voltage clamp and Ussing chamber techniques. KEY RESULTS We found that INO-4995 directly activates a TMEM16A whole cell conductance of 6.1 ± 0.9 nS pF(-1) in overexpressing cells. The tetrakisphosphates Ins(3,4,5,6)P(4) or Ins(1,3,4,5)P(4) and enzymes controlling levels of InsP(4) or PIP(2) and PIP(3) had no effects on the magnitude or kinetics of TMEM16A currents. In contrast in Xenopus oocytes, human airways and colonic cells, which all express TMEM16A endogenously, Cl(-) currents were not acutely activated by INO-4995. However incubation with INO-4995 augmented 1.6- to 4-fold TMEM16A-dependent Cl(-) currents activated by ionomycin or ATP, while intracellular Ca(2+) signals were not affected. The potentiating effect of INO-4995 on transient ATP-activated TMEM16A-currents in cystic fibrosis (CF) airways was twice of that observed in non-CF airways. CONCLUSIONS AND IMPLICATIONS These data indicate that TMEM16A is the target for INO-4995, although the mode of action appears different for overexpressed and endogenous channels. INO-4995 may be useful for the treatment of CF lung disease.
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Key Words
- ino-4995
- ino4913
- anoctamin 1
- tmem16a
- inositol phosphates
- ins(3,4,5,6)p4
- inositol 3,4,5,6-tetrakisphosphate
- ins(1,3,4,5)p4
- inositol 1,3,4,5-tetrakisphosphate
- ca2+-activated cl− channels
- cacc
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Affiliation(s)
- Yuemin Tian
- Institut für Physiologie, Universität RegensburgRegensburg, Germany
| | - Rainer Schreiber
- Institut für Physiologie, Universität RegensburgRegensburg, Germany
| | | | | | - Marisa Sousa
- Faculty of Sciences, BioFIG – Centre for Biodiversity, Functional and Integrative Genomics, University of LisboaLisboa, Portugal
- Department of Genetics, National Institute of HealthLisboa, Portugal
| | - Inna Uliyakina
- Faculty of Sciences, BioFIG – Centre for Biodiversity, Functional and Integrative Genomics, University of LisboaLisboa, Portugal
- Department of Genetics, National Institute of HealthLisboa, Portugal
| | - Marta Palma
- Faculty of Sciences, BioFIG – Centre for Biodiversity, Functional and Integrative Genomics, University of LisboaLisboa, Portugal
| | - Diana Faria
- Institut für Physiologie, Universität RegensburgRegensburg, Germany
| | - Alexis E Traynor-Kaplan
- ISM TherapeuticsSeattle, WA, USA
- Division of Gastroenterology, Department of Medicine, University of WashingtonSeattle, WA, USA
| | - José I Fragata
- Department Cardio-Thoracic Surgery, Hospital de Santa MartaLisboa, Portugal
| | - Margarida D Amaral
- Faculty of Sciences, BioFIG – Centre for Biodiversity, Functional and Integrative Genomics, University of LisboaLisboa, Portugal
- Department of Genetics, National Institute of HealthLisboa, Portugal
| | - Karl Kunzelmann
- Institut für Physiologie, Universität RegensburgRegensburg, Germany
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Clark GB, Morgan RO, Fernandez MP, Roux SJ. Evolutionary adaptation of plant annexins has diversified their molecular structures, interactions and functional roles. THE NEW PHYTOLOGIST 2012; 196:695-712. [PMID: 22994944 DOI: 10.1111/j.1469-8137.2012.04308.x] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Accepted: 07/29/2012] [Indexed: 05/04/2023]
Abstract
Annexins are an homologous, structurally related superfamily of proteins known to associate with membrane lipid and cytoskeletal components. Their involvement in membrane organization, vesicle trafficking and signaling is fundamental to cellular processes such as growth, differentiation, secretion and repair. Annexins exist in some prokaryotes and all eukaryotic phyla within which plant annexins represent a monophyletic clade of homologs descended from green algae. Genomic, proteomic and transcriptomic approaches have provided data on the diversity, cellular localization and expression patterns of different plant annexins. The availability of 35 complete plant genomes has enabled systematic comparative analysis to determine phylogenetic relationships, characterize structures and observe functional specificity between and within individual subfamilies. Short amino termini and selective erosion of the canonical type 2 calcium coordinating sites in domains 2 and 3 are typical of plant annexins. The convergent evolution of alternate functional motifs such as 'KGD', redox-sensitive Cys and hydrophobic Trp/Phe residues argues for their functional relevance and contribution to mechanistic diversity in plant annexins. This review examines recent findings and advances in plant annexin research with special focus on their structural diversity, cellular and molecular interactions and their potential integrated functions in the broader context of physiological responses.
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Affiliation(s)
- Greg B Clark
- Section of Molecular Cell and Developmental Biology, University of Texas, Austin, TX, 78713, USA
| | - Reginald O Morgan
- Department of Biochemistry and Molecular Biology, Faculty of Medicine and University Institute of Biotechnology of Asturias, University of Oviedo, E-33006, Oviedo, Spain
| | - Maria-Pilar Fernandez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine and University Institute of Biotechnology of Asturias, University of Oviedo, E-33006, Oviedo, Spain
| | - Stanley J Roux
- Section of Molecular Cell and Developmental Biology, University of Texas, Austin, TX, 78713, USA
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Massé KL, Collins RJ, Bhamra S, Seville RA, Jones EA. Anxa4 Genes are Expressed in Distinct Organ Systems in Xenopus laevis and tropicalis But are Functionally Conserved. Organogenesis 2012; 3:83-92. [PMID: 19279706 DOI: 10.4161/org.3.2.4945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2007] [Accepted: 11/12/2007] [Indexed: 11/19/2022] Open
Abstract
Anxa4 belongs to the multigenic annexin family of proteins which are characterized by their ability to interact with membranes in a calcium-dependent manner. Defined as a marker for polarized epithelial cells, Anxa4 is believed to be involved in many cellular processes but its functions in vivo are still poorly understood. Previously, we cloned Xanx4 in Xenopus laevis (now referred to as anxa4a) and demonstrated its role during organogenesis of the pronephros, providing the first evidence of a specific function for this protein during the development of a vertebrate. Here, we describe the strict conservation of protein sequence and functional domains of anxa4 during vertebrate evolution. We also identify the paralog of anxa4a, anxa4b and show its specific temporal and spatial expression pattern is different from anxa4a. We show that anxa4 orthologs in X. laevis and tropicalis display expression domains in different organ systems. Whilst the anxa4a gene is mainly expressed in the kidney, Xt anxa4 is expressed in the liver. Finally, we demonstrate Xt anxa4 and anxa4a can display conserved function during kidney organogenesis, despite the fact that Xt anxa4 transcripts are not expressed in this domain. This study highlights the divergence of expression of homologous genes during Xenopus evolution and raises the potential problems of using X. tropicalis promoters in X. laevis.
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Affiliation(s)
- Karine L Massé
- Molecular Physiology Group; Department of Biological Sciences; University of Warwick; Coventry, UK
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21
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Yamashita T, Nagano K, Kanasaki SI, Maeda Y, Furuya T, Inoue M, Nabeshi H, Yoshikawa T, Yoshioka Y, Itoh N, Abe Y, Kamada H, Tsutsumi Y, Tsunoda SI. Annexin A4 is a possible biomarker for cisplatin susceptibility of malignant mesothelioma cells. Biochem Biophys Res Commun 2012; 421:140-4. [PMID: 22497892 DOI: 10.1016/j.bbrc.2012.03.144] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 03/28/2012] [Indexed: 10/28/2022]
Abstract
Mesothelioma is a highly malignant tumor with a poor prognosis and limited treatment options. Although cisplatin (CDDP) is an effective anticancer drug, its response rate is only 20%. Therefore, discovery of biomarkers is desirable to distinguish the CDDP-susceptible versus resistant cases. To this end, differential proteome analysis was performed to distinguish between mesothelioma cells of different CDDP susceptibilities, and this revealed that expression of annexin A4 (ANXA4) protein was higher in CDDP-resistant cells than in CDDP-susceptible cells. Furthermore, ANXA4 expression levels were higher in human clinical malignant mesothelioma tissues than in benign mesothelioma and normal mesothelial tissues. Finally, increased susceptibility was observed following gene knockdown of ANXA4 in mesothelioma cells, whereas the opposite effect was observed following transfection of an ANXA4 plasmid. These results suggest that ANXA4 has a regulatory function related to the cisplatin susceptibility of mesothelioma cells and that it could be a biomarker for CDDP susceptibility in pathological diagnoses.
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Affiliation(s)
- Takuya Yamashita
- Laboratory of Biopharmaceutical Research, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
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Kim A, Serada S, Enomoto T, Naka T. Targeting annexin A4 to counteract chemoresistance in clear cell carcinoma of the ovary. Expert Opin Ther Targets 2010; 14:963-71. [PMID: 20673185 DOI: 10.1517/14728222.2010.511180] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
IMPORTANCE OF THE FIELD Epithelial ovarian cancer (EOC) is the leading cause of death from gynecological malignancies in Western countries. Among the four major histological subtypes of EOC, clear cell carcinoma (CCC) of the ovary is highly resistant to platinum-based chemotherapy and is consequently associated with poor patient prognosis in advanced stages. AREAS COVERED IN THIS REVIEW An overview of the clinical characteristics of ovarian CCC; the role of annexin family proteins in tumor development and progression; the role of annexin A4 in enhancing cellular drug resistance; recent studies linking annexin A4 overexpression to chemoresistance in tumors of ovarian CCC. WHAT THE READER WILL GAIN Insight into the emerging role for annexin A4 in enhancing chemoresistance in ovarian CCC. TAKE HOME MESSAGE Annexin A4 enhances cancer cell chemoresistance and is overexpressed in tumors of patients with ovarian CCC. Targeting of annexin A4 may represent a future strategy to counteract resistance to chemotherapy in ovarian CCC.
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Affiliation(s)
- Ayako Kim
- National Institute of Biomedical Innovation, Ibaraki, Osaka, Japan.
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23
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Astanina K, Delebinski CI, Delacour D, Jacob R. Annexin XIIIb guides raft-dependent and -independent apical traffic in MDCK cells. Eur J Cell Biol 2010; 89:799-806. [DOI: 10.1016/j.ejcb.2010.06.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 06/29/2010] [Accepted: 06/30/2010] [Indexed: 11/25/2022] Open
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24
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Identification, phylogenetic relationships, characterization and gene expression patterns of six different annexins of channel catfish (Ictalurus punctatus Rafinesque, 1818). Vet Immunol Immunopathol 2010; 136:176-83. [DOI: 10.1016/j.vetimm.2010.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 02/05/2010] [Accepted: 02/17/2010] [Indexed: 11/21/2022]
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25
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Kim A, Enomoto T, Serada S, Ueda Y, Takahashi T, Ripley B, Miyatake T, Fujita M, Lee CM, Morimoto K, Fujimoto M, Kimura T, Naka T. Enhanced expression of Annexin A4 in clear cell carcinoma of the ovary and its association with chemoresistance to carboplatin. Int J Cancer 2009; 125:2316-22. [DOI: 10.1002/ijc.24587] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Monastyrskaya K, Babiychuk EB, Draeger A. The annexins: spatial and temporal coordination of signaling events during cellular stress. Cell Mol Life Sci 2009; 66:2623-42. [PMID: 19381436 PMCID: PMC11115530 DOI: 10.1007/s00018-009-0027-1] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Revised: 02/09/2009] [Accepted: 03/27/2009] [Indexed: 12/15/2022]
Abstract
Annexins are a family of structurally related, Ca2+-sensitive proteins that bind to negatively charged phospholipids and establish specific interactions with other lipids and lipid microdomains. They are present in all eukaryotic cells and share a common folding motif, the "annexin core", which incorporates Ca2+- and membrane-binding sites. Annexins participate in a variety of intracellular processes, ranging from the regulation of membrane dynamics to cell migration, proliferation, and apoptosis. Here we focus on the role of annexins in cellular signaling during stress. A chronic stress response triggers the activation of different intracellular pathways, resulting in profound changes in Ca2+ and pH homeostasis and the production of lipid second messengers. We review the latest data on how these changes are sensed by the annexins, which have the ability to simultaneously interact with specific lipid and protein moieties at the plasma membrane, contributing to stress adaptation via regulation of various signaling pathways.
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Affiliation(s)
- Katia Monastyrskaya
- Department of Cell Biology, Institute of Anatomy, University of Bern, 3000 Bern 9, Switzerland.
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27
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Zherelova OM, Kataev AA, Grishchenko VM, Knyazeva EL, Permyakov SE, Permyakov EA. Interaction of antitumor α-lactalbumin—oleic acid complexes with artificial and natural membranes. J Bioenerg Biomembr 2009; 41:229-37. [DOI: 10.1007/s10863-009-9222-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Accepted: 06/03/2009] [Indexed: 10/20/2022]
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28
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Monastyrskaya K, Babiychuk EB, Hostettler A, Wood P, Grewal T, Draeger A. Plasma membrane-associated annexin A6 reduces Ca2+ entry by stabilizing the cortical actin cytoskeleton. J Biol Chem 2009; 284:17227-17242. [PMID: 19386597 DOI: 10.1074/jbc.m109.004457] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The annexins are a family of Ca(2+)- and phospholipid-binding proteins, which interact with membranes upon increase of [Ca(2+)](i) or during cytoplasmic acidification. The transient nature of the membrane binding of annexins complicates the study of their influence on intracellular processes. To address the function of annexins at the plasma membrane (PM), we fused fluorescent protein-tagged annexins A6, A1, and A2 with H- and K-Ras membrane anchors. Stable PM localization of membrane-anchored annexin A6 significantly decreased the store-operated Ca(2+) entry (SOCE), but did not influence the rates of Ca(2+) extrusion. This attenuation was specific for annexin A6 because PM-anchored annexins A1 and A2 did not alter SOCE. Membrane association of annexin A6 was necessary for a measurable decrease of SOCE, because cytoplasmic annexin A6 had no effect on Ca(2+) entry as long as [Ca(2+)](i) was below the threshold of annexin A6-membrane translocation. However, when [Ca(2+)](i) reached the levels necessary for the Ca(2+)-dependent PM association of ectopically expressed wild-type annexin A6, SOCE was also inhibited. Conversely, knockdown of the endogenous annexin A6 in HEK293 cells resulted in an elevated Ca(2+) entry. Constitutive PM localization of annexin A6 caused a rearrangement and accumulation of F-actin at the PM, indicating a stabilized cortical cytoskeleton. Consistent with these findings, disruption of the actin cytoskeleton using latrunculin A abolished the inhibitory effect of PM-anchored annexin A6 on SOCE. In agreement with the inhibitory effect of annexin A6 on SOCE, constitutive PM localization of annexin A6 inhibited cell proliferation. Taken together, our results implicate annexin A6 in the actin-dependent regulation of Ca(2+) entry, with consequences for the rates of cell proliferation.
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Affiliation(s)
- Katia Monastyrskaya
- From the Department of Cell Biology, Institute of Anatomy, University of Bern, 3000 Bern 9, Switzerland.
| | - Eduard B Babiychuk
- From the Department of Cell Biology, Institute of Anatomy, University of Bern, 3000 Bern 9, Switzerland
| | - Andrea Hostettler
- From the Department of Cell Biology, Institute of Anatomy, University of Bern, 3000 Bern 9, Switzerland
| | - Peta Wood
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Thomas Grewal
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Annette Draeger
- From the Department of Cell Biology, Institute of Anatomy, University of Bern, 3000 Bern 9, Switzerland
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29
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Hill WG, Meyers S, von Bodungen M, Apodaca G, Dedman JR, Kaetzel MA, Zeidel ML. Studies on localization and function of annexin A4a within urinary bladder epithelium using a mouse knockout model. Am J Physiol Renal Physiol 2008; 294:F919-27. [PMID: 18256316 DOI: 10.1152/ajprenal.00265.2007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Annexin A4 (anxA4) is a member of the Ca(2+)-dependent membrane-binding family of proteins implicated in the regulation of ion conductances, Ca(2+) homeostasis, and membrane trafficking. We demonstrate, in mice, that annexins 1-6 are present in whole bladder and exhibit differential expression in the urothelium. An anxA4a-knockout (anxA4a(-/-)) mouse model shows no protein in the urothelium by immunofluorescence and immunoblotting. In wild-type bladders, anxA4a in umbrella cells showed uniform cytoplasmic staining and some association with the nuclear membrane. Application of a hydrostatic pressure to bladders mounted in Ussing chambers resulted in redistribution of anxA4a from cytoplasm to cellular boundaries in the basal and intermediate cells but not in superficial umbrella cells. We hypothesized that anxA4a might be important for barrier function or for stretch-activated membrane trafficking. To test these hypotheses, we conducted a series of functional and morphological analyses on bladders from control and anxA4a(-/-) animals. The transepithelial resistances, water permeabilities, and urea permeabilities of anxA4a(-/-) bladders were not different from controls, indicating that barrier function was intact. Membrane trafficking in response to hydrostatic pressure as measured by capacitance increases was also normal for anxA4a(-/-) bladders. Cystometrograms performed on live animals showed that voiding frequency and intrabladder pressures were also not different. There were no differences in bladder surface morphology or cellular architecture examined by scanning and transmission electron microscopy, respectively. We conclude that loss of anxA4 from the urothelium does not affect barrier function, membrane trafficking, or normal bladder-voiding behavior.
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Affiliation(s)
- Warren G Hill
- Division of Matrix Biology, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA
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30
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Piljić A, Schultz C. Annexin A4 self-association modulates general membrane protein mobility in living cells. Mol Biol Cell 2006; 17:3318-28. [PMID: 16687573 PMCID: PMC1483058 DOI: 10.1091/mbc.e06-01-0041] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Annexins are Ca2+-regulated phospholipid-binding proteins whose function is only partially understood. Annexin A4 is a member of this family that is believed to be involved in exocytosis and regulation of epithelial Cl- secretion. In this work, fluorescent protein fusions of annexin A4 were used to investigate Ca2+-induced annexin A4 translocation and self-association on membrane surfaces in living cells. We designed a novel, genetically encoded, FRET sensor (CYNEX4) that allowed for easy quantification of translocation and self-association. Mobility of annexin A4 on membrane surfaces was investigated by FRAP. The experiments revealed the immobile nature of annexin A4 aggregates on membrane surfaces, which in turn strongly reduced the mobility of transmembrane and plasma membrane associated proteins. Our work provides mechanistic insight into how annexin A4 may regulate plasma membrane protein function.
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Affiliation(s)
- Alen Piljić
- Gene Expression Programme, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Carsten Schultz
- Gene Expression Programme, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
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Abstract
This review article summarizes current knowledge about the locations and possible functions of annexin family members in the kidney. Beginning with an introduction on common structural and biochemical features as well as general functional characteristics of annexins, the paper focuses on individual members with documented and/or proposed physiological relevance for renal development, structure, and functions. Three main aspects of annexin function in kidney epithelia emerge from the available experimental data. First, annexins are required for membrane organization and membrane transport events required for the establishment/maintenance of epithelial polarity. Second, there is accumulating evidence of an association of annexins with ion channels, as membrane-guiding auxiliary proteins or modulators of channel activity. Last but not least, some annexins seem to work as extracellular autocrine modulators of receptor function under different physiological conditions.
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Affiliation(s)
- Arseni Markoff
- Institute of Medical Biochemistry, Centre for Molecular Biology of Inflammation, University of Muenster, 48149 Muenster, Germany.
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32
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Abstract
Calcium-activated chloride channels (CaCCs) play important roles in cellular physiology, including epithelial secretion of electrolytes and water, sensory transduction, regulation of neuronal and cardiac excitability, and regulation of vascular tone. This review discusses the physiological roles of these channels, their mechanisms of regulation and activation, and the mechanisms of anion selectivity and conduction. Despite the fact that CaCCs are so broadly expressed in cells and play such important functions, understanding these channels has been limited by the absence of specific blockers and the fact that the molecular identities of CaCCs remains in question. Recent status of the pharmacology and molecular identification of CaCCs is evaluated.
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Affiliation(s)
- Criss Hartzell
- Department of Cell Biology, Emory University School of Medicine, Atlanta, Georgia 30322, USA.
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33
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Probst-Cousin S, Berghoff C, Neundörfer B, Heuss D. Annexin expression in inflammatory myopathies. Muscle Nerve 2004; 30:102-10. [PMID: 15221885 DOI: 10.1002/mus.20077] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The pathogenesis of the inflammatory myopathies is still unclear, making their treatment largely empirical. Improved understanding of the molecular mechanisms of inflammatory muscle injury may, however, lead to the development of more specific immunotherapies. To elucidate a possible pathogenic contribution of calcium-binding proteins such as the annexins, we immunohistochemically investigated muscle biopsy specimens from patients with dermatomyositis (10 cases), polymyositis (9 cases), and inclusion-body myositis (4 cases), compared to control cases comprising sarcoid myopathy (3 cases), Duchenne muscular dystrophy (DMD; 4 cases), and normal muscle (3 cases). We found expression of annexins A1, A2, A4, and A6 in the vascular endothelium of all cases. Myofibers expressed annexins A5, A6, and A7 diffusely and weakly in the cytosol, whereas annexins A5 and A7 were also particularly localized to the sarcolemma. In the inflammatory myopathies, in areas of myonecrosis in DMD, and in granulomatous lesions of sarcoid myopathy, reactivity of annexins A1, A2, A4, A5, and A6 was observed in macrophages and T-lymphocytes. Whereas the latter annexins appear to be nonspecific indicators of activation, annexin A1 upregulation may represent endogenous anti-inflammatory mechanisms that merit further investigation.
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Affiliation(s)
- Stefan Probst-Cousin
- Center of Neuromuscular Disorders, Department of Neurology, Friedrich-Alexander-University Erlangen-Nuremberg, Schwabachanlage 6, D-91054 Erlangen, Germany.
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34
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Zimmermann U, Balabanov S, Giebel J, Teller S, Junker H, Schmoll D, Protzel C, Scharf C, Kleist B, Walther R. Increased expression and altered location of annexin IV in renal clear cell carcinoma: a possible role in tumour dissemination. Cancer Lett 2004; 209:111-8. [PMID: 15145526 DOI: 10.1016/j.canlet.2003.12.002] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2003] [Revised: 11/29/2003] [Accepted: 12/01/2003] [Indexed: 10/26/2022]
Abstract
The proteome of renal cell carcinoma and non-neoplastic kidney tissue was analysed from 12 patients by two-dimensional polyacrylamide gel electrophoresis to search for differentially expressed proteins in the tumour. Annexin IV was identified to be up-regulated in tumour cells. These patients and further 11 were characterized by RT-PCR. We found an increased amount of annexin IV mRNA. Immunohistochemical analysis revealed an altered localization of annexin IV in tumour cells. Additionally we demonstrate that over-expressed annexin IV promotes cell migration in a carcinoma model system. From these results above it seems possible that annexin IV plays an important role in the morphological diversification and dissemination of the clear cell renal cell carcinoma.
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Affiliation(s)
- Uwe Zimmermann
- Department of Urology, University of Greifswald, D-17487 Greifswald, Germany
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35
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Willshaw A, Grant K, Yan J, Rockliffe N, Ambavarapu S, Burdyga G, Varro A, Fukuoka SI, Gawler D. Identification of a novel protein complex containing annexin A4, rabphilin and synaptotagmin. FEBS Lett 2004; 559:13-21. [PMID: 14960300 DOI: 10.1016/s0014-5793(03)01513-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2003] [Revised: 11/14/2003] [Accepted: 11/24/2003] [Indexed: 11/17/2022]
Abstract
Rabphilin is a synaptic vesicle-associated protein proposed to play a role in regulating neurotransmitter release. Here we report the isolation and identification of a novel protein complex containing rabphilin, annexin A4 and synaptotagmin 1. We show that the rabphilin C2B domain interacts directly with the N-terminus of annexin A4 and mediates the co-complexing of these two proteins in PC12 cells. Analyzing the cellular localisation of these co-complexing proteins we find that annexin A4 is located on synaptic membranes and co-localises with rabphilin at the plasma membrane in PC12 cells. Given that rabphilin and synaptotagmin are synaptic vesicle proteins involved in neurotransmitter release, the identification of this complex suggests that annexin A4 may play a role in synaptic exocytosis.
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Affiliation(s)
- Angela Willshaw
- The Physiological Laboratory, University of Liverpool, Crown Street, Liverpool L69 3BX, UK
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36
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Robinson NC, Huang P, Kaetzel MA, Lamb FS, Nelson DJ. Identification of an N-terminal amino acid of the CLC-3 chloride channel critical in phosphorylation-dependent activation of a CaMKII-activated chloride current. J Physiol 2004; 556:353-68. [PMID: 14754994 PMCID: PMC1664934 DOI: 10.1113/jphysiol.2003.058032] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
CLC-3, a member of the CLC family of chloride channels, mediates function in many cell types in the body. The multifunctional calcium-calmodulin-dependent protein kinase II (CaMKII) has been shown to activate recombinant CLC-3 stably expressed in tsA cells, a human embryonic kidney cell line derivative, and natively expressed channel protein in a human colonic tumour cell line T84. We examined the CaMKII-dependent regulation of CLC-3 in a smooth muscle cell model as well as in the human colonic tumour cell line, HT29, using whole-cell voltage clamp. In CLC-3-expressing cells, we observed the activation of a Cl(-) conductance following intracellular introduction of the isolated autonomous CaMKII into the voltage-clamped cell via the patch pipette. The CaMKII-dependent Cl(-) conductance was not observed following exposure of the cells to 1 microm autocamtide inhibitory peptide (AIP), a selective inhibitor of CaMKII. Arterial smooth muscle cells express a robust CaMKII-activated Cl(-) conductance; however, CLC-3(-/-) cells did not. The N-terminus of CLC-3, which contains a CaMKII consensus sequence, was phosphorylated by CaMKII in vitro, and mutation of the serine at position 109 (S109A) abolished the CaMKII-dependent Cl(-) conductance, indicating that this residue is important in the gating of CLC-3 at the plasma membrane.
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Affiliation(s)
- N C Robinson
- Department of Neurobiology, Pharmacology, and Physiology, The University of Chicago, 947 East 58(th) Street, AB-500 MC-0926, Chicago, IL 60637, USA
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Li B, Dedman JR, Kaetzel MA. Intron disruption of the annexin IV gene reveals novel transcripts. J Biol Chem 2003; 278:43276-83. [PMID: 12912993 DOI: 10.1074/jbc.m306361200] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Annexin IV (AIV), a Ca2+-dependent membrane-binding protein, is expressed in many epithelia. Annexin IV modifies membrane bilayers by increasing rigidity, reducing water and H+ permeability, promoting vesicle aggregation, and regulating ion conductances, all in a Ca2+-dependent manner. We have characterized a mouse in which a gene trap has been inserted into the first intron of annexin IV. Processing of the primary transcript is disrupted. Northern blot and immunoblot data indicated that annexin IV expression was eliminated in many but not all tissues. Immunohistochemical analysis, however, demonstrated that annexin IV expression was eliminated in some cell types, but was unaltered in others. 5'-Rapid amplification of cDNA ends analysis of intestinal and kidney RNA revealed three transcripts, AIVa, AIVb, and AIVc. AIVa is widely distributed. AIVb is expressed only in the digestive tract. AIVc expression is very restricted. A selected number of epithelial cells of unique morphology demonstrate high concentrations. All three transcripts produce an identical annexin IV protein. The different tissue and cell-specific expression profiles of the three transcripts suggest that regulation of both the annexin IV gene expression and the cellular role of the protein are complex. The AIVa-/- mouse may become a valuable model to further study transcription and the physiological role of annexin IV.
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Affiliation(s)
- Bailing Li
- Departments of Genome Science and Molecular and Cellular Physiology, University of Cincinnati, College of Medicine, Cincinnati, Ohio 45237-0505, USA
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Utleg AG, Yi EC, Xie T, Shannon P, White JT, Goodlett DR, Hood L, Lin B. Proteomic analysis of human prostasomes. Prostate 2003; 56:150-61. [PMID: 12746840 DOI: 10.1002/pros.10255] [Citation(s) in RCA: 190] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Prostasomes are secretory particles in human seminal fluid. Other than a microscopic description of these secretory particles and an incomplete two-dimensional gel electrophoresis (2DE) study, little is known about the composition of proteins in prostasomes. METHODS We employed a direct iterative approach using Gas phase fractionation and microcapillary HPLC-tandem mass spectrometry (microLC-MS/MS) to catalogue the prostasome proteome. RESULTS We identified 139 proteins that can be divided into the following categories: (1). enzymes (33.8% of total), (2). transport/structural (19.4% of total), (3). GTP proteins (14.4% of total), (4). chaperone proteins (5.8% of total), (5). signal transduction proteins (17.3% of total), and (6). unannotated proteins (9.4% of total). A total of 128 of the 139 proteins have not previously been described as prostasomal. CONCLUSIONS The proteins identified can be used as reference dataset in future work comparing prostasome proteins between normal and pathological states such as prostate cancer, benign prostatic hyperplasia, prostatitis, and infertility.
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Abstract
The Annexins (ANXs) are a family of calcium- and phospholipid-binding proteins that have been implicated in many cellular processes, including channel formation, membrane fusion, vesicle transport, and regulation of phospholipase A2 activity. As a first step toward understanding in vivo function, we have cloned 11 zebrafish anx genes. Four genes (anx1a, anx2a, anx5,and anx11a) were identified by screening a zebrafish cDNA library with a Xenopus anx2 fragment. For these genes, full-length cDNA sequences were used to cluster 212 EST sequences generated by the Zebrafish Genome Resources Project. The EST analysis revealed seven additional anx genes that were subsequently cloned. The genetic map positions of all 11 genes were determined by using a zebrafish radiation hybrid panel. Sequence and syntenic relationships between zebrafish and human genes indicate that the 11 genes represent orthologs of human anx1,2,4,5,6,11,13,and suggest that several zebrafish anx genes resulted from duplications that arose after divergence of the zebrafish and mammalian genomes. Zebrafish anx genes are expressed in a wide range of tissues during embryonic and larval stages. Analysis of the expression patterns of duplicated genes revealed both redundancy and divergence, with the most similar genes having almost identical tissue-specific patterns of expression and with less similar duplicates showing no overlap. The differences in gene expression of recently duplicated anx genes could explain why highly related paralogs were maintained in the genome and did not rapidly become pseudogenes.
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Affiliation(s)
- Steven A Farber
- Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland 21210, USA.
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40
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Hill WG, Kaetzel MA, Kishore BK, Dedman JR, Zeidel ML. Annexin A4 reduces water and proton permeability of model membranes but does not alter aquaporin 2-mediated water transport in isolated endosomes. J Gen Physiol 2003; 121:413-25. [PMID: 12695484 PMCID: PMC2217383 DOI: 10.1085/jgp.200308803] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2003] [Revised: 03/14/2003] [Accepted: 03/17/2003] [Indexed: 01/06/2023] Open
Abstract
Annexin A4 (Anx4) belongs to a ubiquitous family of Ca2+-dependent membrane-binding proteins thought to be involved in membrane trafficking and membrane organization within cells. Anx4 localizes to the apical region in epithelia; however, its physiological role is unclear. We show that Anx4 exhibited binding to liposomes (phosphatidylcholine:phosphatidylserine, 1:1) in the presence of Ca2+ and binding was reversible with EDTA. Anx4 binding resulted in liposome aggregation and a reduction in membrane water permeability of 29% (P < 0.001) at 25 degrees C. These effects were not seen in the presence of Ca2+ or Anx4 alone and were reversible with EDTA. Measurements of membrane fluidity made by monitoring fluorescence anisotropy of 2-(12-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino)dodecanoyl-1-hexadecanoyl-sn-glycero-3-phosphocholine (NBD-HPC) demonstrated that Anx4 binding rigidified the outer leaflet of the bilayer (P < 0.001), thus providing a molecular explanation for the inhibition of water flux. To determine whether Anx4 would produce similar effects on physiological membranes we constructed liposomes which recapitulated the lipid composition of the inner leaflet of the MDCK apical membrane. These membranes exhibited reductions to water permeability upon Anx4 binding (19.5% at 25 degrees C, 31% at 37 degrees C; P < 0.01 and P < 0.001, respectively) and to proton permeability (15% at 25 degrees C, 19.5% at 37 degrees C; P < 0.05). Since our in vitro experiments indicated an effect on membrane permeability, we examined localization of Anx4 in the kidney collecting duct, a region of the nephron responsible for concentrating urine through water reabsorbtion. Anx4 was shown to colocalize apically with aquaporin 2 (AQP2) in collecting duct epithelia. To test for the existence of a functional interaction between Anx4 and AQP2 we isolated AQP2-containing endosomes and exposed them to Anx4/Ca2+. Water flux rates were unchanged, indicating Anx4 does not directly regulate AQP2. We conclude that Anx4 can alter the physical properties of membranes by associating with them and regulate passive membrane permeability to water and protons. These properties represent important new functions for Anx4.
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Affiliation(s)
- Warren G Hill
- Laboratory of Epithelial Cell Biology, Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA.
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42
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Abstract
Annexins are Ca2+ and phospholipid binding proteins forming an evolutionary conserved multigene family with members of the family being expressed throughout animal and plant kingdoms. Structurally, annexins are characterized by a highly alpha-helical and tightly packed protein core domain considered to represent a Ca2+-regulated membrane binding module. Many of the annexin cores have been crystallized, and their molecular structures reveal interesting features that include the architecture of the annexin-type Ca2+ binding sites and a central hydrophilic pore proposed to function as a Ca2+ channel. In addition to the conserved core, all annexins contain a second principal domain. This domain, which NH2-terminally precedes the core, is unique for a given member of the family and most likely specifies individual annexin properties in vivo. Cellular and animal knock-out models as well as dominant-negative mutants have recently been established for a number of annexins, and the effects of such manipulations are strikingly different for different members of the family. At least for some annexins, it appears that they participate in the regulation of membrane organization and membrane traffic and the regulation of ion (Ca2+) currents across membranes or Ca2+ concentrations within cells. Although annexins lack signal sequences for secretion, some members of the family have also been identified extracellularly where they can act as receptors for serum proteases on the endothelium as well as inhibitors of neutrophil migration and blood coagulation. Finally, deregulations in annexin expression and activity have been correlated with human diseases, e.g., in acute promyelocytic leukemia and the antiphospholipid antibody syndrome, and the term annexinopathies has been coined.
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Affiliation(s)
- Volker Gerke
- Institute for Medical Biochemistry, Center for Molecular Biology of Inflammation, University of Münster, Münster, Germany
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Ho MW, Shears SB. Regulation of calcium-activated chloride channels by inositol 3,4,5,6 tetrakisphosphate. CURRENT TOPICS IN MEMBRANES 2002. [DOI: 10.1016/s1063-5823(02)53041-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Huang P, Liu J, Di A, Robinson NC, Musch MW, Kaetzel MA, Nelson DJ. Regulation of human CLC-3 channels by multifunctional Ca2+/calmodulin-dependent protein kinase. J Biol Chem 2001; 276:20093-100. [PMID: 11274166 DOI: 10.1074/jbc.m009376200] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The multifunctional calcium/calmodulin-dependent protein kinase II, CaMKII, has been shown to regulate chloride movement and cellular function in both excitable and non-excitable cells. We show that the plasma membrane expression of a member of the ClC family of Cl(-) channels, human CLC-3 (hCLC-3), a 90-kDa protein, is regulated by CaMKII. We cloned the full-length hCLC-3 gene from the human colonic tumor cell line T84, previously shown to express a CaMKII-activated Cl(-) conductance (I(Cl,CaMKII)), and transfected this gene into the mammalian epithelial cell line tsA, which lacks endogenous expression of I(Cl,CaMKII). Biotinylation experiments demonstrated plasma membrane expression of hCLC-3 in the stably transfected cells. In whole cell patch clamp experiments, autonomously active CaMKII was introduced into tsA cells stably transfected with hCLC-3 via the patch pipette. Cells transfected with the hCLC-3 gene showed a 22-fold increase in current density over cells expressing the vector alone. Kinase-dependent current expression was abolished in the presence of the autocamtide-2-related inhibitory peptide, a specific inhibitor of CaMKII. A mutation of glycine 280 to glutamic acid in the conserved motif in the putative pore region of the channel changed anion selectivity from I(-) > Cl(-) to Cl(-) > I(-). These results indicate that hCLC-3 encodes a Cl(-) channel that is regulated by CaMKII-dependent phosphorylation.
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Affiliation(s)
- P Huang
- Department of Neurobiology, Pharmacology and Physiology, IBD Research Center and Department of Medicine, The University of Chicago, Chicago, Illinois 60637, USA
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Kaetzel MA, Mo YD, Mealy TR, Campos B, Bergsma-Schutter W, Brisson A, Dedman JR, Seaton BA. Phosphorylation mutants elucidate the mechanism of annexin IV-mediated membrane aggregation. Biochemistry 2001; 40:4192-9. [PMID: 11300800 DOI: 10.1021/bi002507s] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Site-directed mutagenesis, electron microscopy, and X-ray crystallography were used to probe the structural basis of annexin IV-induced membrane aggregation and the inhibition of this property by protein kinase C phosphorylation. Site-directed mutants that either mimic (Thr6Asp, T6D) or prevent (Thr6Ala, T6A) phosphorylation of threonine 6 were produced for these studies and compared with wild-type annexin IV. In vitro assays showed that unmodified wild-type annexin IV and the T6A mutant, but not PKC-phosphorylated wild-type or the T6D mutant, promote vesicle aggregation. Electron crystallographic data of wild-type and T6D annexin IV revealed that, similar to annexin V, the annexin IV proteins form 2D trimer-based ordered arrays on phospholipid monolayers. Cryo-electron microscopic images of junctions formed between lipid vesicles in the presence of wild-type annexin IV indicated a separation distance corresponding to the thickness of two layers of membrane-bound annexin IV. In this orientation, a single layer of WT annexin IV, attached to the outer leaflet of one vesicle, would undergo face-to-face self-association with the annexin layer of a second vesicle. The 2.0-A resolution crystal structure of the T6D mutant showed that the mutation causes release of the N-terminal tail from the protein core. This change would preclude the face-to-face annexin self-association required to aggregate vesicles. The data suggest that reversible complex formation through phosphorylation and dephosphorylation could occur in vivo and play a role in the regulation of vesicle trafficking following changes in physiological states.
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Affiliation(s)
- M A Kaetzel
- Departments of Molecular and Cellular Physiology and of Obstetrics and Gynecology, University of Cincinnati, College of Medicine, Ohio 45220, USA
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Muimo R, Hornickova Z, Riemen CE, Gerke V, Matthews H, Mehta A. Histidine phosphorylation of annexin I in airway epithelia. J Biol Chem 2000; 275:36632-6. [PMID: 10956639 DOI: 10.1074/jbc.m000829200] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Although [Cl(-)](i) regulates many cellular functions including cell secretion, the mechanisms governing these actions are not known. We have previously shown that the apical membrane of airway epithelium contains a 37-kDa phosphoprotein (p37) whose phosphorylation is regulated by chloride concentration. Using metal affinity (chelating Fe(3+)-Sepharose) and anion exchange (POROS HQ 20) chromatography, we have purified p37 from ovine tracheal epithelia to electrophoretic homogeneity. Sequence analysis and immunoprecipitation using monoclonal and specific polyclonal antibodies identified p37 as annexin I, a member of a family of Ca(2+)-dependent phospholipid-binding proteins. Phosphate on [(32)P]annexin I, phosphorylated using both [gamma-(32)P]ATP and [gamma-(32)P]GTP, was labile under acidic but not alkaline conditions. Phosphoamino acid analysis showed the presence of phosphohistidine. The site of phosphorylation was localized to a carboxyl-terminal fragment of annexin I. Our data suggest that cAMP and AMP (but not cGMP) may regulate annexin I histidine phosphorylation. We propose a role for annexin I in an intracellular signaling system involving histidine phosphorylation.
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Affiliation(s)
- R Muimo
- Tayside Institute of Child Health, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, United Kingdom.
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Lecat S, Verkade P, Thiele C, Fiedler K, Simons K, Lafont F. Different properties of two isoforms of annexin XIII in MDCK cells. J Cell Sci 2000; 113 ( Pt 14):2607-18. [PMID: 10862718 DOI: 10.1242/jcs.113.14.2607] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Annexins form a family of proteins that are widely expressed and known to bind membranes in the presence of calcium. Two isoforms of the annexin XIII subfamily are expressed in epithelia. We previously reported that annexin XIIIb is apically localized in MDCK cells and that it is involved in raft-mediated delivery of apical proteins. We have now analyzed the properties of annexin XIIIa, which differs from annexin XIIIb by a deletion of 41 amino acids in the amino-terminal domain, and is distributed both apically and basolaterally. Annexin XIIIa binding to membranes is independent of calcium but requires its myristoyl amino-terminal modification, as observed with annexin XIIIb. Our biochemical and functional data show that annexin XIIIa behaves differently in the apical and in the basolateral compartments. Whereas annexin XIIIa apically can associate with rafts independently of calcium, the basolateral pool requires calcium for this. Annexin XIIIa, like annexin XIIIb, stimulates apical transport of influenza virus hemagglutinin but, in contrast, only annexin XIIIa inhibits basolateral transport of vesicular stomatitis virus G protein. Our results suggest that annexin XIIIa and XIIIb have specific roles in epithelial cells, and because of their structural similarities, these isoforms offer interesting tools for unravelling the functions of annexins.
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Affiliation(s)
- S Lecat
- Cell Biology and Biophysics Programme, European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69117 Heidelberg, Germany
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Frings S, Reuter D, Kleene SJ. Neuronal Ca2+ -activated Cl- channels--homing in on an elusive channel species. Prog Neurobiol 2000; 60:247-89. [PMID: 10658643 DOI: 10.1016/s0301-0082(99)00027-1] [Citation(s) in RCA: 193] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Ca2+ -activated Cl- channels control electrical excitability in various peripheral and central populations of neurons. Ca2+ influx through voltage-gated or ligand-operated channels, as well as Ca2+ release from intracellular stores, have been shown to induce substantial Cl- conductances that determine the response to synaptic input, spike rate, and the receptor current of various kinds of neurons. In some neurons, Ca2+ -activated Cl- channels are localized in the dendritic membrane, and their contribution to signal processing depends on the local Cl- equilibrium potential which may differ considerably from those at the membranes of somata and axons. In olfactory sensory neurons, the channels are expressed in ciliary processes of dendritic endings where they serve to amplify the odor-induced receptor current. Recent biophysical studies of signal transduction in olfactory sensory neurons have yielded some insight into the functional properties of Ca2+ -activated Cl- channels expressed in the chemosensory membrane of these cells. Ion selectivity, channel conductance, and Ca2+ sensitivity have been investigated, and the role of the channels in the generation of receptor currents is well understood. However, further investigation of neuronal Ca2+ -activated Cl- channels will require information about the molecular structure of the channel protein, the regulation of channel activity by cellular signaling pathways, as well as the distribution of channels in different compartments of the neuron. To understand the physiological role of these channels it is also important to know the Cl- equilibrium potential in cells or in distinct cell compartments that express Ca2+ -activated Cl- channels. The state of knowledge about most of these aspects is considerably more advanced in non-neuronal cells, in particular in epithelia and smooth muscle. This review, therefore, collects results both from neuronal and from non-neuronal cells with the intent of facilitating research into Ca2+ -activated Cl- channels and their physiological functions in neurons.
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Affiliation(s)
- S Frings
- Institut für Biologische Informationsverarbeitung, Forschungszentrum Jülich, Germany.
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Kubista H, Hawkins TE, Patel DR, Haigler HT, Moss SE. Annexin 5 mediates a peroxide-induced Ca(2+) influx in B cells. Curr Biol 1999; 9:1403-6. [PMID: 10607568 DOI: 10.1016/s0960-9822(00)80085-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Annexin 5 is a Ca(2+)-binding protein, the function of which is poorly understood. Structural and electrophysiological studies have shown that annexin 5 can mediate Ca(2+) fluxes across phospholipid membranes in vitro [1]. There is, however, no direct evidence for the existence of annexin 5 Ca(2+) channels in living cells. Here, we show that annexin 5 inserts into phospholipid vesicle membranes at neutral pH in the presence of peroxide. We then used targeted gene disruption to explore the role of annexin 5 in peroxide-induced Ca(2+) signaling in DT40 pre-B cells. DT40 clones lacking annexin 5 exhibited normal Ca(2+) responses to both thapsigargin and B-cell receptor stimulation, but lacked the sustained phase of the response to peroxide. This late phase was due to Ca(2+) influx from the extracellular space, demonstrating that annexin 5 mediates a peroxide-induced Ca(2+) influx. Thus, peroxide induces annexin 5 membrane insertion in vitro, and peroxide-induced Ca(2+) entry in vivo in DT40 cells requires annexin 5. Our results are consistent with a role for annexin 5 either as a Ca(2+) channel, or as a signaling intermediate in the peroxide-induced Ca(2+)-influx pathway.
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Affiliation(s)
- H Kubista
- Department of Physiology, University College London, London, WC1E 6BT, UK
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Campos B, Wang S, Retzinger GS, Kaetzel MA, Seaton BA, Karin NJ, Johnson JD, Dedman JR. Mutation of highly conserved arginine residues disrupts the structure and function of annexin V. Arch Med Res 1999; 30:360-7. [PMID: 10596454 DOI: 10.1016/s0188-0128(99)00040-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Annexins are a family of structurally related proteins that bind to phospholipid membranes in a Ca(2+)-dependent manner. Annexins are characterized by highly conserved canonical domains of approximately 70 amino acids. Annexin V contains four such domains. Each of these domains has a highly conserved arginine (R). METHODS To evaluate the role of the conserved arginines in the molecular structure of annexin V, negatively charged amino acids were substituted for arginines at positions R43, R115, R199, and R274 using site-directed mutagenesis. RESULTS Mutants R199D and R274E were rapidly degraded when expressed in bacteria, and were not further characterized. R43E exhibited an electrophoretic mobility similar to the wild-type protein, while R115E migrated significantly in a slower fashion, suggesting a less compact conformation. R43E and R115E exhibited much greater susceptibility to proteolytic digestion than the wild type. While Ca(2+)-dependence for phospholipid binding was similar in both mutants (half-maximal 50-80 microM Ca2+), R43E and R115E exhibited a 6- and 2-fold decrease in phospholipid affinity, respectively. Consistent with the different phospholipid affinities of the annexins, a phospholipid-dependent clotting reaction, the activated partial thromboplastin time (aPTT), was significantly prolonged by the wild-type protein and mutants R115E and R115A. The aPTT was unaffected by R43E. CONCLUSIONS Our data suggest that mutation of these highly conserved arginine residues in each of the four canonical domains of annexin have differential effects on the phospholipid binding, tertiary structure, and proteolytic susceptibility of annexin V. The site I mutation, R43E, produced a large decrease in phospholipid affinity associated with an increase in proteolytic susceptibility. The site II mutation, R115E, produced a small change in phospholipid binding but a significant modification of electrophoretic mobility. Our data suggest that highly conserved arginine residues are required to stabilize the tertiary structure of annexin V by establishing hydrogen bonds and ionic bridges.
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Affiliation(s)
- B Campos
- Department of Molecular and Cellular Physiology, University of Cincinnati, College of Medicine, OH 45267-0576, USA
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