1
|
CYBA encoding p22(phox), the cytochrome b558 alpha polypeptide: gene structure, expression, role and physiopathology. Gene 2016; 586:27-35. [PMID: 27048830 DOI: 10.1016/j.gene.2016.03.050] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 03/07/2016] [Accepted: 03/22/2016] [Indexed: 12/31/2022]
Abstract
P22(phox) is a ubiquitous protein encoded by the CYBA gene located on the long arm of chromosome 16 at position 24, containing six exons and spanning 8.5 kb. P22(phox) is a critical component of the superoxide-generating nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs). It is associated with NOX2 to form cytochrome b558 expressed mainly in phagocytes and responsible for the killing of microorganisms when bacterial and fungal infections occur. CYBA mutations lead to one of the autosomal recessive forms of chronic granulomatous disease (AR22(0)CGD) clinically characterized by recurrent and severe infections in early childhood. However, p22(phox) is also the partner of NOX1, NOX3 and NOX4, but not NOX5, which are analogs of NOX2, the first identified member of the NOX family. P22(phox)-NOX complexes have emerged as one of the most relevant sources of reactive oxygen species (ROS) in tissues and cells, and are associated with several diseases such as cardiovascular and cerebrovascular diseases. The p22(phox)-deficient mouse strain nmf333 has made it possible to highlight the role of p22(phox) in the control of inner ear balance in association with NOX3. However, the relevance of p22(phox) for NOX3 function remains uncertain because AR22(0)CGD patients do not suffer from vestibular dysfunction. Finally, a large number of genetic variations of CYBA have been reported, among them the C242T polymorphism, which has been extensively studied in association with coronary artery and heart diseases, but conflicting results continue to be reported.
Collapse
|
2
|
Abstract
The mechanism by which reactive oxygen species (ROS) are produced by tumour cells remained incompletely understood until the discovery over the last 15 years of the family of NADPH oxidases (NOXs 1–5 and dual oxidases DUOX1/2) which are structural homologues of gp91phox, the major membrane-bound component of the respiratory burst oxidase of leucocytes. Knowledge of the roles of the NOX isoforms in cancer is rapidly expanding. Recent evidence suggests that both NOX1 and DUOX2 species produce ROS in the gastrointestinal tract as a result of chronic inflammatory stress; cytokine induction (by interferon-γ, tumour necrosis factor α, and interleukins IL-4 and IL-13) of NOX1 and DUOX2 may contribute to the development of colorectal and pancreatic carcinomas in patients with inflammatory bowel disease and chronic pancreatitis, respectively. NOX4 expression is increased in pre-malignant fibrotic states which may lead to carcinomas of the lung and liver. NOX5 is highly expressed in malignant melanomas, prostate cancer and Barrett's oesophagus-associated adenocarcinomas, and in the last it is related to chronic gastro-oesophageal reflux and inflammation. Over-expression of functional NOX proteins in many tissues helps to explain tissue injury and DNA damage from ROS that accompany pre-malignant conditions, as well as elucidating the potential mechanisms of NOX-related damage that contribute to both the initiation and the progression of a wide range of solid and haematopoietic malignancies.
Collapse
|
3
|
Vlahos R, Selemidis S. NADPH Oxidases as Novel Pharmacologic Targets against Influenza A Virus Infection. Mol Pharmacol 2014; 86:747-59. [DOI: 10.1124/mol.114.095216] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
|
4
|
Matsumoto M, Katsuyama M, Iwata K, Ibi M, Zhang J, Zhu K, Nauseef WM, Yabe-Nishimura C. Characterization of N-glycosylation sites on the extracellular domain of NOX1/NADPH oxidase. Free Radic Biol Med 2014; 68:196-204. [PMID: 24361341 DOI: 10.1016/j.freeradbiomed.2013.12.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 11/27/2013] [Accepted: 12/12/2013] [Indexed: 01/12/2023]
Abstract
Extensive evidence demonstrates the pathophysiological importance of NOX1, the catalytic subunit of superoxide-generating enzyme NADPH oxidase, as a source of reactive oxygen species in nonphagocytic cells. However, the biochemical properties of NOX1 have not been extensively characterized due to a lack of specific immunological tools. We used a newly raised NOX1 polyclonal antibody to investigate posttranslational modifications of NOX1 overexpressed in cultured cells and in the colon, where endogenous NOX1 is highly expressed. Immunoblots of lysates from cells expressing NOX1 revealed a doublet of 56 and 60kDa accompanied by a broad band of 60-90kDa. Based on differential sensitivity to glycosidases, the doublet was identified as two high-mannose-type glycoforms of NOX1, whereas the broad band represented NOX1 with complex-type N-linked oligosaccharides. Deglycosylated NOX1 migrated at ~53kDa and N-glycosylation was demonstrated in NOX1 derived from both rat and human. Site-directed mutagenesis identified N-glycosylation sites at Asn(161) and Asn(241) on the extracellular loop of mouse NOX1. Elimination of N-glycosylation on NOX1 did not affect its electron transferase activity, protein stability, targeting to the cell surface, or localization in F-actin-positive membrane protrusions. Taken together, these data identify the two specific sites of N-linked glycosylation of murine NOX1 and demonstrate that they are not required for normal enzyme activity, protein stability, and membrane trafficking. As is true for NOX2, the contribution of glycosylation in NOX1 to its biologic function(s) merits further study.
Collapse
Affiliation(s)
- Misaki Matsumoto
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
| | - Masato Katsuyama
- Radioisotope Center, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Kazumi Iwata
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Masakazu Ibi
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Jia Zhang
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Kai Zhu
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - William M Nauseef
- Inflammation Program and Department of Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Coralville, IA 52241, USA; Veterans Administration Medical Center, Iowa City, IA 52240, USA
| | - Chihiro Yabe-Nishimura
- Department of Pharmacology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| |
Collapse
|
5
|
Miyano K, Sumimoto H. N-linked glycosylation of the superoxide-producing NADPH oxidase Nox1. Biochem Biophys Res Commun 2014; 443:1060-5. [DOI: 10.1016/j.bbrc.2013.12.086] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 12/17/2013] [Indexed: 10/25/2022]
|
6
|
McLeish KR, Merchant ML, Klein JB, Ward RA. Technical note: proteomic approaches to fundamental questions about neutrophil biology. J Leukoc Biol 2013; 94:683-92. [PMID: 23470899 DOI: 10.1189/jlb.1112591] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Proteomics is one of a group of technologies that generates high-throughput, large-scale datasets that can be used to understand cell or organ functions at a systems level. This review will focus on the application of proteomics to the understanding of neutrophil biology. The strengths and weaknesses of common proteomic methods and their application to neutrophils are reviewed, with the goal of evaluating whether the technology is ready to advance our understanding of neutrophil biology.
Collapse
Affiliation(s)
- Kenneth R McLeish
- 1.Baxter I Research Bldg., Rm. 102 South, 570 South Preston St., Louisville, KY 40202, USA.
| | | | | | | |
Collapse
|
7
|
Lectin-induced activation of plasma membrane NADPH oxidase in cholesterol-depleted human neutrophils. Arch Biochem Biophys 2011; 516:173-81. [PMID: 22056482 DOI: 10.1016/j.abb.2011.10.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Revised: 10/21/2011] [Accepted: 10/21/2011] [Indexed: 12/11/2022]
Abstract
The gp91phox subunit of flavocytochrome b(558) is the catalytic core of the phagocyte plasma membrane NADPH oxidase. Its activation occurs within lipid rafts and requires translocation of four subunits to flavocytochrome b(558). gp91phox is the only glycosylated subunit of NADPH oxidase and no data exist about the structure or function of its glycans. Glycans, however, bind to lectins and this can stimulate NADPH oxidase activity. Given this information, we hypothesized that lectin-gp91phox interactions would facilitate the assembly of a functionally active NADPH oxidase in the absence of lipid rafts. To test this, we used lectins with different carbohydrate-binding specificity to examine the effects on H(2)O(2) generation by human neutrophils treated with the lipid raft disrupting agent methyl-β-cyclodextrin (MβCD). MβCD treatment removed membrane cholesterol, caused changes in cell morphology, inhibited lectin-induced cell aggregation, and delayed lectin-induced assembly of the NADPH oxidase complex. More importantly, MβCD treatment either stimulated or inhibited H(2)O(2) production in a lectin-dependent manner. Together, these results show selectivity in lectin binding to gp91phox, and provide evidence for the biochemical structures of the gp91phox glycans. Furthermore, the data also indicate that in the absence of lipid rafts, neutrophil NADPH oxidase activity can be altered by these select lectins.
Collapse
|
8
|
Hayee B, Antonopoulos A, Murphy EJ, Rahman FZ, Sewell G, Smith BN, McCartney S, Furman M, Hall G, Bloom SL, Haslam SM, Morris HR, Boztug K, Klein C, Winchester B, Pick E, Linch DC, Gale RE, Smith AM, Dell A, Segal AW. G6PC3 mutations are associated with a major defect of glycosylation: a novel mechanism for neutrophil dysfunction. Glycobiology 2011; 21:914-24. [PMID: 21385794 PMCID: PMC3110488 DOI: 10.1093/glycob/cwr023] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Revised: 02/03/2011] [Accepted: 03/02/2011] [Indexed: 01/18/2023] Open
Abstract
Glucose-6-phosphatase, an enzyme localized in the endoplasmic reticulum (ER), catalyzes the hydrolysis of glucose-6-phosphate (G6P) to glucose and inorganic phosphate. In humans, there are three differentially expressed glucose-6-phosphatase catabolic genes (G6PC1-3). Recently, it has been shown that mutations in the G6PC3 gene result in a syndrome associating congenital neutropenia and various organ malformations. The enzymatic function of G6PC3 is dependent on G6P transport into the ER, mediated by G6P translocase (G6PT). Mutations in the gene encoding G6PT result in glycogen storage disease type-1b (GSD-1b). Interestingly, GSD-1b patients exhibit a similar neutrophil dysfunction to that observed in G6PC3-deficient patients. To better understand the causes of neutrophil dysfunction in both diseases, we have studied the neutrophil nicotinamide adenine dinucleotide phosphate (NADPH) oxidase of patients with G6PC3 and G6PT syndromes. Unexpectedly, sodium dodecyl sulfate-polyacrylamide gel electrophoresis experiments indicated hypo-glycosylation of gp91(phox), the electron-transporting component of the NADPH oxidase, in all of these patients. Rigorous mass spectrometric glycomic profiling showed that most of the complex-type antennae which characterize the neutrophil N-glycome of healthy individuals were severely truncated in the patients' neutrophils. A comparable truncation of the core 2 antenna of the O-glycans was also observed. This aberrant neutrophil glycosylation is predicted to have profound effects on the neutrophil function and merit designation of both syndromes as a new class of congenital disorders of glycosylation.
Collapse
Affiliation(s)
- Bu'Hussain Hayee
- Department of Molecular Medicine, and
- Research Department of Haematology, University College London, London WC1E 6BT, UK
| | | | | | | | | | - Bradley N Smith
- Department of Gastroenterology, UCLH NHS Foundation Trust, London NW1 2BU, UK
| | - Sara McCartney
- Research Department of Haematology, University College London, London WC1E 6BT, UK
| | - Mark Furman
- Department of Paediatric Gastroenterology, Royal Free Hampstead NHS Trust, London WC1N 3JH, UK
| | - Georgina Hall
- Paediatric Haematology/Oncology Unit, Oxford Children's Hospital, John Radcliffe Hospital, Oxford, UK
| | - Stuart L Bloom
- Research Department of Haematology, University College London, London WC1E 6BT, UK
| | - Stuart M Haslam
- Division of Molecular Biosciences, Imperial College London, London SW7 2AZ, UK
| | - Howard R Morris
- Division of Molecular Biosciences, Imperial College London, London SW7 2AZ, UK
| | - Kaan Boztug
- Department of Pediatric Hematology/Oncology, Hannover Medical School, Hannover, Germany
- Center for Molecular Medicine (CeMM) of the Austrian Academy of Sciences, A-1080 Vienna, Austria
| | - Christoph Klein
- Department of Pediatric Hematology/Oncology, Hannover Medical School, Hannover, Germany
| | - Bryan Winchester
- Biochemistry Research Group, UCL Institute of Child Health, London WC1N 1EH, UK
| | - Edgar Pick
- Julius Friedrich Cohnheim Laboratory of Phagocyte Research, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - David C Linch
- Department of Gastroenterology, UCLH NHS Foundation Trust, London NW1 2BU, UK
| | - Rosemary E Gale
- Department of Gastroenterology, UCLH NHS Foundation Trust, London NW1 2BU, UK
| | | | - Anne Dell
- Division of Molecular Biosciences, Imperial College London, London SW7 2AZ, UK
| | | |
Collapse
|
9
|
Taylor RM, Dratz EA, Jesaitis AJ. Invariant local conformation in p22phox p.Y72H polymorphisms suggested by mass spectral analysis of crosslinked human neutrophil flavocytochrome b. Biochimie 2011; 93:1502-9. [PMID: 21640156 DOI: 10.1016/j.biochi.2011.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Accepted: 05/06/2011] [Indexed: 01/06/2023]
Abstract
The NADPH oxidase of phagocytic leukocytes generates superoxide that plays a critical role in innate immunity and inflammatory responses. The integral membrane protein flavocytochrome b (Cyt b, a.k.a. cytochrome b(558/559)) is the catalytic core of the complex and serves as a prototype for homologs important in regulating signaling networks in a wide variety of animal and plant cells. Our analysis identifies a naturally-occurring Tyr72/His72 polymorphism (p.Y72H) in the p22(phox) subunit of Cyt b at the protein level that has been recognized at the nucleotide level (c.214T > C, formerly C242T) and implicated in cardiovascular disease. In the present study, Cyt b was isolated from human neutrophils and reacted with chemical crosslinkers for subsequent structure analysis by MALDI mass spectrometry. Following mild chemical modification of Cyt b with two pairs of isotopically-differentiated lysine crosslinkers: BS(2)G-d(0)/d(4) and BS(3)-d(0)/d(4), the reaction mixtures were digested with trypsin and purified on C(18)ZipTips to generate samples for mass analysis. MALDI analysis of tryptic digests from each of the above reactions revealed a series of masses that could be assigned to p22(phox) residues 68-85, assuming an intra-molecular crosslink between Lys71 and Lys78. In addition to the 30 ppm mass accuracy obtained with internal mass calibration, increased confidence in the assignment of the crosslinks was provided by the presence of the diagnostic mass patterns resulting from the isotopically-differentiated crosslinking reagent pairs and the Tyr72/His72 p22(phox) polymorphisms in the crosslinked peptides. This work identifies a novel, low-resolution distance constraint in p22(phox) and suggests that the medically-relevant p.Y72H polymorphism has an invariant structural motif in this region. Because position 72 in p22(phox) lies outside regions identified as interactive with other oxidase components, the structural invariance also provides additional support for maturational differences as the source of the wide variation in observed reactive oxygen species production by cells expressing p.Y72H.
Collapse
Affiliation(s)
- Ross M Taylor
- Department of Microbiology, 109 Lewis Hall, Montana State University, Bozeman, MT 59717-3520, USA
| | | | | |
Collapse
|
10
|
Ostuni MA, Lamanuzzi LB, Bizouarn T, Dagher MC, Baciou L. Expression of functional mammal flavocytochrome b558 in yeast: Comparison with improved insect cell system. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2010; 1798:1179-88. [DOI: 10.1016/j.bbamem.2010.02.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 01/22/2010] [Accepted: 02/12/2010] [Indexed: 11/29/2022]
|
11
|
Application of proteomics to neutrophil biology. J Proteomics 2009; 73:552-61. [PMID: 19580889 DOI: 10.1016/j.jprot.2009.06.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Revised: 06/23/2009] [Accepted: 06/28/2009] [Indexed: 01/13/2023]
Abstract
Polymorphonuclear leukocytes or neutrophils are a primary effector cell of the innate immune system and contribute to the development of adaptive immunity. Neutrophils participate in both the initiation and resolution of inflammatory responses through a series of highly coordinated molecular and phenotypic changes. To accomplish these changes, neutrophils express numerous receptors and use multiple overlapping and redundant signal transduction pathways. Dysregulation of the activation or resolution pathways plays a role in a number of human diseases. A comprehensive understanding of the regulation of neutrophil responses can be provided by high throughput proteomic technologies and sophisticated computational analysis. The first steps in the application of proteomics to understanding neutrophil biology have been taken. Here we review the application of expression, structural, and functional proteomic studies to neutrophils. Although defining the complex molecular events associated with neutrophil activation is in the early stages, the data generated to date suggest that proteomic technologies will dramatically enhance our understanding of neutrophil biology.
Collapse
|
12
|
Selemidis S, Sobey CG, Wingler K, Schmidt HH, Drummond GR. NADPH oxidases in the vasculature: Molecular features, roles in disease and pharmacological inhibition. Pharmacol Ther 2008; 120:254-91. [DOI: 10.1016/j.pharmthera.2008.08.005] [Citation(s) in RCA: 175] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Accepted: 08/06/2008] [Indexed: 02/07/2023]
|
13
|
Nauseef WM. Nox enzymes in immune cells. Semin Immunopathol 2008; 30:195-208. [DOI: 10.1007/s00281-008-0117-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Accepted: 04/02/2008] [Indexed: 01/08/2023]
|
14
|
Affiliation(s)
- William M Nauseef
- Inflammation Program, Department of Medicine, University of Iowa and the Veterans Affairs Medical Center, Iowa City, Iowa 52241, USA.
| |
Collapse
|
15
|
Lord CI, Riesselman MH, Gripentrog JM, Burritt JB, Jesaitis AJ, Taylor RM. Single-step immunoaffinity purification and functional reconstitution of human phagocyte flavocytochrome b. J Immunol Methods 2007; 329:201-7. [PMID: 17996248 DOI: 10.1016/j.jim.2007.10.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Accepted: 10/10/2007] [Indexed: 11/30/2022]
Abstract
Human neutrophil flavocytochrome b (Cyt b) is a heterodimeric, integral membrane protein that generates high levels of superoxide in the multisubunit NADPH oxidase complex. Since Cyt b is currently isolated in limited quantities, improved methods for purification from low levels of starting membranes (from both neutrophils and other expressing cell types) are important for the analysis of structure and catalytic mechanism. In the present study, the epitope-mapped monoclonal antibody CS9 was coupled to Sepharose beads and used as an affinity matrix for single-step immunoaffinity purification of Cyt b. Following solubilization of both human neutrophil and PLB-985 membrane fractions in the nonionic detergent octylglucoside, Cyt b was absorbed on the CS9-Sepharose affinity matrix and purified protein was eluted under non-denaturing conditions with an epitope-mimicking peptide. The high efficiency of this isolation procedure allowed Cyt b to be reproducibly purified from readily obtainable levels of starting membrane fractions (9x10(8) cell equivalents of neutrophil membranes and 2x10(9) cell equivalents of PLB-985 membranes). Since Cyt b could be affinity-purified in the detergent octylglucoside, high-level functional reconstitution was carried out directly on elution fractions by simple addition of solubilized phospholipid and subsequent dialysis for detergent removal. To our knowledge, this study describes the most efficient method for generating purified, functionally-reconstituted Cyt b and should facilitate analyses that require a highly-defined NADPH oxidase system.
Collapse
Affiliation(s)
- Connie I Lord
- Department of Microbiology, 109 Lewis Hall, Montana State University, Bozeman, MT 59717, USA
| | | | | | | | | | | |
Collapse
|
16
|
Marques B, Liguori L, Paclet MH, Villegas-Mendéz A, Rothe R, Morel F, Lenormand JL. Liposome-mediated cellular delivery of active gp91(phox). PLoS One 2007; 2:e856. [PMID: 17848987 PMCID: PMC1955831 DOI: 10.1371/journal.pone.0000856] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Accepted: 08/16/2007] [Indexed: 11/26/2022] Open
Abstract
Background Gp91phox is a transmembrane protein and the catalytic core of the NADPH oxidase complex of neutrophils. Lack of this protein causes chronic granulomatous disease (CGD), a rare genetic disorder characterized by severe and recurrent infections due to the incapacity of phagocytes to kill microorganisms. Methodology Here we optimize a prokaryotic cell-free expression system to produce integral mammalian membrane proteins. Conclusions Using this system, we over-express truncated forms of the gp91phox protein under soluble form in the presence of detergents or lipids resulting in active proteins with a “native-like” conformation. All the proteins exhibit diaphorase activity in the presence of cytosolic factors (p67phox, p47phox, p40phox and Rac) and arachidonic acid. We also produce proteoliposomes containing gp91phox protein and demonstrate that these proteins exhibit activities similar to their cellular counterpart. The proteoliposomes induce rapid cellular delivery and relocation of recombinant gp91phox proteins to the plasma membrane. Our data support the concept of cell-free expression technology for producing recombinant proteoliposomes and their use for functional and structural studies or protein therapy by complementing deficient cells in gp91phox protein.
Collapse
Affiliation(s)
- Bruno Marques
- HumProTher, UMR-CNRS 5525, Université Joseph Fourier, Centre Hospitalier Universitaire, Laboratoire d'Enzymologie/DBPC/BP 217, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | - Lavinia Liguori
- HumProTher, UMR-CNRS 5525, Université Joseph Fourier, Centre Hospitalier Universitaire, Laboratoire d'Enzymologie/DBPC/BP 217, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | - Marie-Hélène Paclet
- GREPI, TIMC-Imag, UMR-CNRS 5525, Université Joseph Fourier, Centre Hospitalier Universitaire, Laboratoire d'Enzymologie/DBPC/BP 217, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | - Ana Villegas-Mendéz
- HumProTher, UMR-CNRS 5525, Université Joseph Fourier, Centre Hospitalier Universitaire, Laboratoire d'Enzymologie/DBPC/BP 217, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | - Romy Rothe
- HumProTher, UMR-CNRS 5525, Université Joseph Fourier, Centre Hospitalier Universitaire, Laboratoire d'Enzymologie/DBPC/BP 217, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | - Françoise Morel
- GREPI, TIMC-Imag, UMR-CNRS 5525, Université Joseph Fourier, Centre Hospitalier Universitaire, Laboratoire d'Enzymologie/DBPC/BP 217, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | - Jean-Luc Lenormand
- HumProTher, UMR-CNRS 5525, Université Joseph Fourier, Centre Hospitalier Universitaire, Laboratoire d'Enzymologie/DBPC/BP 217, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
- * To whom correspondence should be addressed. E-mail:
| |
Collapse
|
17
|
Riesselman M, Miettinen HM, Gripentrog JM, Lord CI, Mumey B, Dratz EA, Stie J, Taylor RM, Jesaitis AJ. C-Terminal Tail Phosphorylation of N-Formyl Peptide Receptor: Differential Recognition of Two Neutrophil Chemoattractant Receptors by Monoclonal Antibodies NFPR1 and NFPR2. THE JOURNAL OF IMMUNOLOGY 2007; 179:2520-31. [PMID: 17675514 DOI: 10.4049/jimmunol.179.4.2520] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The N-formyl peptide receptor (FPR), a G protein-coupled receptor that binds proinflammatory chemoattractant peptides, serves as a model receptor for leukocyte chemotaxis. Recombinant histidine-tagged FPR (rHis-FPR) was purified in lysophosphatidyl glycerol (LPG) by Ni(2+)-NTA agarose chromatography to >95% purity with high yield. MALDI-TOF mass analysis (>36% sequence coverage) and immunoblotting confirmed the identity as FPR. The rHis-FPR served as an immunogen for the production of 2 mAbs, NFPR1 and NFPR2, that epitope map to the FPR C-terminal tail sequences, 305-GQDFRERLI-313 and 337-NSTLPSAEVE-346, respectively. Both mAbs specifically immunoblotted rHis-FPR and recombinant FPR (rFPR) expressed in Chinese hamster ovary cells. NFPR1 also recognized recombinant FPRL1, specifically expressed in mouse L fibroblasts. In human neutrophil membranes, both Abs labeled a 45-75 kDa species (peak M(r) approximately 60 kDa) localized primarily in the plasma membrane with a minor component in the lactoferrin-enriched intracellular fractions, consistent with FPR size and localization. NFPR1 also recognized a band of M(r) approximately 40 kDa localized, in equal proportions to the plasma membrane and lactoferrin-enriched fractions, consistent with FPRL1 size and localization. Only NFPR2 was capable of immunoprecipitation of rFPR in detergent extracts. The recognition of rFPR by NFPR2 is lost after exposure of cellular rFPR to f-Met-Leu-Phe (fMLF) and regained after alkaline phosphatase treatment of rFPR-bearing membranes. In neutrophils, NFPR2 immunofluorescence was lost upon fMLF stimulation. Immunoblotting approximately 60 kDa species, after phosphatase treatment of fMLF-stimulated neutrophil membranes, was also enhanced. We conclude that the region 337-346 of FPR becomes phosphorylated after fMLF activation of rFPR-expressing Chinese hamster ovary cells and neutrophils.
Collapse
MESH Headings
- Animals
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/immunology
- CHO Cells
- Cell Membrane/chemistry
- Cell Membrane/genetics
- Cell Membrane/immunology
- Cell Membrane/metabolism
- Chemotaxis/drug effects
- Chemotaxis/genetics
- Chemotaxis/immunology
- Chromatography, Affinity
- Cricetinae
- Cricetulus
- Epitope Mapping
- Epitopes/chemistry
- Epitopes/genetics
- Epitopes/immunology
- Fibroblasts/immunology
- Fibroblasts/metabolism
- Gene Expression
- Humans
- Lactoferrin/chemistry
- Lactoferrin/genetics
- Lactoferrin/immunology
- Lactoferrin/metabolism
- Lysophospholipids/chemistry
- Mice
- Models, Immunological
- N-Formylmethionine Leucyl-Phenylalanine/analogs & derivatives
- N-Formylmethionine Leucyl-Phenylalanine/chemistry
- N-Formylmethionine Leucyl-Phenylalanine/immunology
- N-Formylmethionine Leucyl-Phenylalanine/metabolism
- N-Formylmethionine Leucyl-Phenylalanine/pharmacology
- Neutrophils/chemistry
- Neutrophils/immunology
- Neutrophils/metabolism
- Phosphorylation/drug effects
- Protein Processing, Post-Translational/drug effects
- Protein Processing, Post-Translational/genetics
- Protein Processing, Post-Translational/immunology
- Protein Structure, Tertiary/genetics
- Receptors, Formyl Peptide/chemistry
- Receptors, Formyl Peptide/genetics
- Receptors, Formyl Peptide/immunology
- Receptors, Formyl Peptide/isolation & purification
- Receptors, Formyl Peptide/metabolism
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- Recombinant Fusion Proteins/metabolism
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
- Spodoptera
Collapse
Affiliation(s)
- Marcia Riesselman
- Department of Microbiology, Montana State University, Bozeman, Montana 59717, USA
| | | | | | | | | | | | | | | | | |
Collapse
|