Chapter 13 History Complement Components Complement Pathways
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C3b Catalog Number: A114 Sizes Available
Name: C3b Catalog Number: A114 Sizes Available: 250 µg/vial Concentration: 1.0 mg/mL (see Certificate of Analysis for actual concentration) Form: Liquid Purity: >90% by SDS-PAGE Buffer: 10 mM sodium phosphate, 145 mM NaCl, pH 7.3 Extinction Coeff. A280 nm = 1.03 at 1.0 mg/mL Molecular Weight: 176,000 Da (2 chains) Preservative: None, 0.22 µm filtered Storage: -70oC or below. Avoid freeze/thaw. Source: Normal human serum (shown by certified tests to be negative for HBsAg and for antibodies to HCV, HIV-1 and HIV-II). Precautions: Use normal precautions for handling human blood products. Origin: Manufactured in the USA. General Description C3b is derived from native C3 upon cleavage and release of C3a. It is prepared by cleavage with the alternative pathway C3 convertase. This is important because only a single bond in C3 is cleaved by the native convertase, while cleavage by other proteases, such as trypsin, results in multiple cleavages at many other sites in the protein. Native human C3b is a glycosylated (~2.8%) polypeptide containing two disulfide-linked chains. C3b is central to the function of all three pathways of complement (Law, S.K.A. and Reid, K.B.M. (1995)). Initiation of each pathway generates proteolytic enzyme complexes (C3 convertases) which are bound to the target surface. These enzymes cleave a peptide bond in C3 releasing the anaphylatoxin C3a and activating C3b. For a brief time (~60 µs) this nascent C3b is capable of reacting with and covalently coupling to hydroxyl groups on the target surface. -
The Membrane Complement Regulatory Protein CD59 and Its Association with Rheumatoid Arthritis and Systemic Lupus Erythematosus
Current Medicine Research and Practice 9 (2019) 182e188 Contents lists available at ScienceDirect Current Medicine Research and Practice journal homepage: www.elsevier.com/locate/cmrp Review Article The membrane complement regulatory protein CD59 and its association with rheumatoid arthritis and systemic lupus erythematosus * Nibhriti Das a, Devyani Anand a, Bintili Biswas b, Deepa Kumari c, Monika Gandhi c, a Department of Biochemistry, All India Institute of Medical Sciences, New Delhi 110029, India b Department of Zoology, Ramjas College, University of Delhi, India c University School of Biotechnology, Guru Gobind Singh Indraprastha University, India article info abstract Article history: The complement cascade consisting of about 50 soluble and cell surface proteins is activated in auto- Received 8 May 2019 immune inflammatory disorders. This contributes to the pathological manifestations in these diseases. In Accepted 30 July 2019 normal health, the soluble and membrane complement regulatory proteins protect the host against Available online 5 August 2019 complement-mediated self-tissue injury by controlling the extent of complement activation within the desired limits for the host's benefit. CD59 is a membrane complement regulatory protein that inhibits the Keywords: formation of the terminal complement complex or membrane attack complex (C5b6789n) which is CD59 generated on complement activation by any of the three pathways, namely, the classical, alternative, and RA SLE the mannose-binding lectin pathway. Animal experiments and human studies have suggested impor- Pathophysiology tance of membrane complement proteins including CD59 in the pathophysiology of rheumatoid arthritis Disease marker (RA) and systemic lupus erythematosus (SLE). Here is a brief review on CD59 and its distribution, structure, functions, and association with RA and SLE starting with a brief introduction on the com- plement system, its activation, the biological functions, and relations of membrane complement regu- latory proteins, especially CD59, with RA and SLE. -
Blocking Properdin Prevents Complement-Mediated Hemolytic Uremic Syndrome and Systemic Thrombophilia
BASIC RESEARCH www.jasn.org Blocking Properdin Prevents Complement-Mediated Hemolytic Uremic Syndrome and Systemic Thrombophilia Yoshiyasu Ueda,1 Takashi Miwa,1 Damodar Gullipalli,1 Sayaka Sato,1 Daisuke Ito,1 Hangsoo Kim,1 Matthew Palmer,2 and Wen-Chao Song1 Departments of 1Systems Pharmacology and Translational Therapeutics and 2Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania ABSTRACT Background Properdin (P) is a positive regulator of the alternative pathway of complement activation. Although P inhibition is expected and has been shown to ameliorate the alternative pathway of comple- ment-mediated tissue injury in several disease models, it unexpectedly exacerbated renal injury in a murine model of C3 glomerulopathy. The role of P in atypical hemolytic uremic syndrome (aHUS) is uncertain. Methods We blocked P function by genetic deletion or mAb-mediated inhibition in mice carrying a factor H (FH) point mutation, W1206R (FHR/R), that causes aHUS and systemic thrombophilia with high mortality. Results Pdeficiency completely rescued FHR/R mice from premature death and prevented thrombocyto- penia, hemolytic anemia, and renal disease. It also eliminated macrovessel thrombi that were prevalent in FHR/R mice. All mice that received a function-blocking anti-P mAb for 8 weeks survived the experimental period and appeared grossly healthy. Platelet counts and hemoglobin levels were significantly improved in FHR/R mice after 4 weeks of anti-P mAb treatment. One half of the FHR/R mice treated with an isotype control mAb but none of the anti-P mAb-treated mice developed stroke-related neurologic disease. Anti-P mAb-treated FHR/R mice showed largely normal renal histology, and residual liver thrombi were detected in only three of 15 treated mice. -
Activation Regulates Alternative Pathway Complement Necrotic
Properdin Binds to Late Apoptotic and Necrotic Cells Independently of C3b and Regulates Alternative Pathway Complement Activation This information is current as of September 27, 2021. Wei Xu, Stefan P. Berger, Leendert A. Trouw, Hetty C. de Boer, Nicole Schlagwein, Chantal Mutsaers, Mohamed R. Daha and Cees van Kooten J Immunol 2008; 180:7613-7621; ; doi: 10.4049/jimmunol.180.11.7613 Downloaded from http://www.jimmunol.org/content/180/11/7613 References This article cites 56 articles, 27 of which you can access for free at: http://www.jimmunol.org/ http://www.jimmunol.org/content/180/11/7613.full#ref-list-1 Why The JI? Submit online. • Rapid Reviews! 30 days* from submission to initial decision • No Triage! Every submission reviewed by practicing scientists by guest on September 27, 2021 • Fast Publication! 4 weeks from acceptance to publication *average Subscription Information about subscribing to The Journal of Immunology is online at: http://jimmunol.org/subscription Permissions Submit copyright permission requests at: http://www.aai.org/About/Publications/JI/copyright.html Email Alerts Receive free email-alerts when new articles cite this article. Sign up at: http://jimmunol.org/alerts The Journal of Immunology is published twice each month by The American Association of Immunologists, Inc., 1451 Rockville Pike, Suite 650, Rockville, MD 20852 Copyright © 2008 by The American Association of Immunologists All rights reserved. Print ISSN: 0022-1767 Online ISSN: 1550-6606. The Journal of Immunology Properdin Binds to Late Apoptotic and Necrotic Cells Independently of C3b and Regulates Alternative Pathway Complement Activation1,2 Wei Xu,* Stefan P. Berger,* Leendert A. -
A Computational Approach for Defining a Signature of Β-Cell Golgi Stress in Diabetes Mellitus
Page 1 of 781 Diabetes A Computational Approach for Defining a Signature of β-Cell Golgi Stress in Diabetes Mellitus Robert N. Bone1,6,7, Olufunmilola Oyebamiji2, Sayali Talware2, Sharmila Selvaraj2, Preethi Krishnan3,6, Farooq Syed1,6,7, Huanmei Wu2, Carmella Evans-Molina 1,3,4,5,6,7,8* Departments of 1Pediatrics, 3Medicine, 4Anatomy, Cell Biology & Physiology, 5Biochemistry & Molecular Biology, the 6Center for Diabetes & Metabolic Diseases, and the 7Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202; 2Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202; 8Roudebush VA Medical Center, Indianapolis, IN 46202. *Corresponding Author(s): Carmella Evans-Molina, MD, PhD ([email protected]) Indiana University School of Medicine, 635 Barnhill Drive, MS 2031A, Indianapolis, IN 46202, Telephone: (317) 274-4145, Fax (317) 274-4107 Running Title: Golgi Stress Response in Diabetes Word Count: 4358 Number of Figures: 6 Keywords: Golgi apparatus stress, Islets, β cell, Type 1 diabetes, Type 2 diabetes 1 Diabetes Publish Ahead of Print, published online August 20, 2020 Diabetes Page 2 of 781 ABSTRACT The Golgi apparatus (GA) is an important site of insulin processing and granule maturation, but whether GA organelle dysfunction and GA stress are present in the diabetic β-cell has not been tested. We utilized an informatics-based approach to develop a transcriptional signature of β-cell GA stress using existing RNA sequencing and microarray datasets generated using human islets from donors with diabetes and islets where type 1(T1D) and type 2 diabetes (T2D) had been modeled ex vivo. To narrow our results to GA-specific genes, we applied a filter set of 1,030 genes accepted as GA associated. -
The 'C3ar Antagonist' SB290157 Is a Partial C5ar2 Agonist
bioRxiv preprint doi: https://doi.org/10.1101/2020.08.01.232090; this version posted August 3, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. The ‘C3aR antagonist’ SB290157 is a partial C5aR2 agonist Xaria X. Li1, Vinod Kumar1, John D. Lee1, Trent M. Woodruff1* 1School of Biomedical Sciences, The University of Queensland, St Lucia, 4072 Australia. * Correspondence: Prof. Trent M. Woodruff School of Biomedical Sciences, The University of Queensland, St Lucia, 4072 Australia. Ph: +61 7 3365 2924; Fax: +61 7 3365 1766; E-mail: [email protected] Keywords: Complement C3a, C3aR, SB290157, C5aR1, C5aR2 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.08.01.232090; this version posted August 3, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Abbreviations used in this article: BRET, bioluminescence resonance energy transfer; BSA, bovine serum albumin; C3aR, C3a receptor C5aR1, C5a receptor 1; CHO-C3aR, Chinese hamster ovary cells stably expressing C3aR; CHO-C5aR1, Chinese hamster ovary cells stably expressing C5aR1; DMEM, Dulbecco's Modified Eagle's Medium; ERK1/2, extracellular signal-regulated kinase 1/2; FBS, foetal bovine serum; HEK293, human embryonic kidney 293 cells; HMDM, human monocyte-derived macrophage; i.p., intraperitoneal; i.v., intravenous; rhC5a, recombinant human C5a; RT, room temperature; S.E.M. -
An Anticomplement Agent That Homes to the Damaged Brain and Promotes Recovery After Traumatic Brain Injury in Mice
An anticomplement agent that homes to the damaged brain and promotes recovery after traumatic brain injury in mice Marieta M. Rusevaa,1,2, Valeria Ramagliab,1, B. Paul Morgana, and Claire L. Harrisa,3 aInstitute of Infection and Immunity, School of Medicine, Cardiff University, Cardiff CF14 4XN, United Kingdom; and bDepartment of Genome Analysis, Academic Medical Center, Amsterdam 1105 AZ, The Netherlands Edited by Douglas T. Fearon, Cornell University, Cambridge, United Kingdom, and approved September 29, 2015 (received for review July 15, 2015) Activation of complement is a key determinant of neuropathology to rapidly and specifically inhibit MAC at sites of complement and disability after traumatic brain injury (TBI), and inhibition is activation, and test its therapeutic potential in experimental TBI. neuroprotective. However, systemic complement is essential to The construct, termed CD59-2a-CRIg, comprises CD59a linked fight infections, a critical complication of TBI. We describe a to CRIg via the murine IgG2a hinge. CD59a prevents assembly targeted complement inhibitor, comprising complement receptor of MAC in cell membranes (16), whereas CRIg binds C3b/iC3b of the Ig superfamily (CRIg) fused with complement regulator CD59a, deposited at sites of complement activation (17). The IgG2a designed to inhibit membrane attack complex (MAC) assembly at hinge promotes dimerization to increase ligand avidity. CD59- sites of C3b/iC3b deposition. CRIg and CD59a were linked via the 2a-CRIg protected in the TBI model, demonstrating that site- IgG2a hinge, yielding CD59-2a-CRIg dimer with increased iC3b/C3b targeted anti-MAC therapeutics may be effective in prevention binding avidity and MAC inhibitory activity. CD59-2a-CRIg inhibited of secondary neuropathology and improve neurologic recovery MAC formation and prevented complement-mediated lysis in vitro. -
Properdin Contributes to Allergic Airway Inflammation Through Local C3a Generation Yuan Wang, Takashi Miwa, Blerina Ducka-Kokalari, Imre G
Properdin Contributes to Allergic Airway Inflammation through Local C3a Generation Yuan Wang, Takashi Miwa, Blerina Ducka-Kokalari, Imre G. Redai, Sayaka Sato, Damodar Gullipalli, James G. This information is current as Zangrilli, Angela Haczku and Wen-Chao Song of September 26, 2021. J Immunol 2015; 195:1171-1181; Prepublished online 26 June 2015; doi: 10.4049/jimmunol.1401819 http://www.jimmunol.org/content/195/3/1171 Downloaded from Supplementary http://www.jimmunol.org/content/suppl/2015/06/26/jimmunol.140181 Material 9.DCSupplemental http://www.jimmunol.org/ References This article cites 66 articles, 21 of which you can access for free at: http://www.jimmunol.org/content/195/3/1171.full#ref-list-1 Why The JI? Submit online. • Rapid Reviews! 30 days* from submission to initial decision by guest on September 26, 2021 • No Triage! Every submission reviewed by practicing scientists • Fast Publication! 4 weeks from acceptance to publication *average Subscription Information about subscribing to The Journal of Immunology is online at: http://jimmunol.org/subscription Permissions Submit copyright permission requests at: http://www.aai.org/About/Publications/JI/copyright.html Email Alerts Receive free email-alerts when new articles cite this article. Sign up at: http://jimmunol.org/alerts The Journal of Immunology is published twice each month by The American Association of Immunologists, Inc., 1451 Rockville Pike, Suite 650, Rockville, MD 20852 Copyright © 2015 by The American Association of Immunologists, Inc. All rights reserved. Print ISSN: 0022-1767 Online ISSN: 1550-6606. The Journal of Immunology Properdin Contributes to Allergic Airway Inflammation through Local C3a Generation Yuan Wang,* Takashi Miwa,* Blerina Ducka-Kokalari,† Imre G. -
The Case for Lupus Nephritis
Journal of Clinical Medicine Review Expanding the Role of Complement Therapies: The Case for Lupus Nephritis Nicholas L. Li * , Daniel J. Birmingham and Brad H. Rovin Department of Internal Medicine, Division of Nephrology, The Ohio State University, Columbus, OH 43210, USA; [email protected] (D.J.B.); [email protected] (B.H.R.) * Correspondence: [email protected]; Tel.: +1-614-293-4997; Fax: +1-614-293-3073 Abstract: The complement system is an innate immune surveillance network that provides defense against microorganisms and clearance of immune complexes and cellular debris and bridges innate and adaptive immunity. In the context of autoimmune disease, activation and dysregulation of complement can lead to uncontrolled inflammation and organ damage, especially to the kidney. Systemic lupus erythematosus (SLE) is characterized by loss of tolerance, autoantibody production, and immune complex deposition in tissues including the kidney, with inflammatory consequences. Effective clearance of immune complexes and cellular waste by early complement components protects against the development of lupus nephritis, while uncontrolled activation of complement, especially the alternative pathway, promotes kidney damage in SLE. Therefore, complement plays a dual role in the pathogenesis of lupus nephritis. Improved understanding of the contribution of the various complement pathways to the development of kidney disease in SLE has created an opportunity to target the complement system with novel therapies to improve outcomes in lupus nephritis. In this review, we explore the interactions between complement and the kidney in SLE and their implications for the treatment of lupus nephritis. Keywords: lupus nephritis; complement; systemic lupus erythematosus; glomerulonephritis Citation: Li, N.L.; Birmingham, D.J.; Rovin, B.H. -
By Map44 Pathway Activation in a Manner Inhibitable Pattern
Co-Complexes of MASP-1 and MASP-2 Associated with the Soluble Pattern-Recognition Molecules Drive Lectin Pathway Activation in a Manner Inhibitable This information is current as by MAp44 of September 28, 2021. Søren E. Degn, Lisbeth Jensen, Tomasz Olszowski, Jens C. Jensenius and Steffen Thiel J Immunol 2013; 191:1334-1345; Prepublished online 19 June 2013; Downloaded from doi: 10.4049/jimmunol.1300780 http://www.jimmunol.org/content/191/3/1334 http://www.jimmunol.org/ Supplementary http://www.jimmunol.org/content/suppl/2013/06/19/jimmunol.130078 Material 0.DC1 References This article cites 43 articles, 23 of which you can access for free at: http://www.jimmunol.org/content/191/3/1334.full#ref-list-1 Why The JI? Submit online. by guest on September 28, 2021 • Rapid Reviews! 30 days* from submission to initial decision • No Triage! Every submission reviewed by practicing scientists • Fast Publication! 4 weeks from acceptance to publication *average Subscription Information about subscribing to The Journal of Immunology is online at: http://jimmunol.org/subscription Permissions Submit copyright permission requests at: http://www.aai.org/About/Publications/JI/copyright.html Email Alerts Receive free email-alerts when new articles cite this article. Sign up at: http://jimmunol.org/alerts The Journal of Immunology is published twice each month by The American Association of Immunologists, Inc., 1451 Rockville Pike, Suite 650, Rockville, MD 20852 Copyright © 2013 by The American Association of Immunologists, Inc. All rights reserved. Print ISSN: 0022-1767 Online ISSN: 1550-6606. The Journal of Immunology Co-Complexes of MASP-1 and MASP-2 Associated with the Soluble Pattern-Recognition Molecules Drive Lectin Pathway Activation in a Manner Inhibitable by MAp44 Søren E. -
Are Complement Deficiencies Really Rare?
G Model MIMM-4432; No. of Pages 8 ARTICLE IN PRESS Molecular Immunology xxx (2014) xxx–xxx Contents lists available at ScienceDirect Molecular Immunology j ournal homepage: www.elsevier.com/locate/molimm Review Are complement deficiencies really rare? Overview on prevalence, ଝ clinical importance and modern diagnostic approach a,∗ b Anete Sevciovic Grumach , Michael Kirschfink a Faculty of Medicine ABC, Santo Andre, SP, Brazil b Institute of Immunology, University of Heidelberg, Heidelberg, Germany a r a t b i c s t l e i n f o r a c t Article history: Complement deficiencies comprise between 1 and 10% of all primary immunodeficiencies (PIDs) accord- Received 29 May 2014 ing to national and supranational registries. They are still considered rare and even of less clinical Received in revised form 18 June 2014 importance. This not only reflects (as in all PIDs) a great lack of awareness among clinicians and gen- Accepted 23 June 2014 eral practitioners but is also due to the fact that only few centers worldwide provide a comprehensive Available online xxx laboratory complement analysis. To enable early identification, our aim is to present warning signs for complement deficiencies and recommendations for diagnostic approach. The genetic deficiency of any Keywords: early component of the classical pathway (C1q, C1r/s, C2, C4) is often associated with autoimmune dis- Complement deficiencies eases whereas individuals, deficient of properdin or of the terminal pathway components (C5 to C9), are Warning signs Prevalence highly susceptible to meningococcal disease. Deficiency of C1 Inhibitor (hereditary angioedema, HAE) Meningitis results in episodic angioedema, which in a considerable number of patients with identical symptoms Infections also occurs in factor XII mutations. -
Instant Notes: Immunology, Second Edition
Immunology Second Edition The INSTANT NOTES series Series Editor: B.D. Hames School of Biochemistry and Molecular Biology, University of Leeds, Leeds, UK Animal Biology 2nd edition Biochemistry 2nd edition Bioinformatics Chemistry for Biologists 2nd edition Developmental Biology Ecology 2nd edition Immunology 2nd edition Genetics 2nd edition Microbiology 2nd edition Molecular Biology 2nd edition Neuroscience Plant Biology Chemistry series Consulting Editor: Howard Stanbury Analytical Chemistry Inorganic Chemistry 2nd edition Medicinal Chemistry Organic Chemistry 2nd edition Physical Chemistry Psychology series Sub-series Editor: Hugh Wagner Dept of Psychology, University of Central Lancashire, Preston, UK Psychology Cognitive Psychology Forthcoming title Physiological Psychology Immunology Second Edition P.M. Lydyard Department of Immunology and Molecular Pathology, Royal Free and University College Medical School, University College London, London, UK A. Whelan Department of Immunology, Trinity College and St James’ Hospital, Dublin, Ireland and M.W. Fanger Department of Microbiology and Immunology, Dartmouth Medical School, Lebanon, New Hampshire, USA © Garland Science/BIOS Scientific Publishers Limited, 2004 First published 2000 This edition published in the Taylor & Francis e-Library, 2005. “To purchase your own copy of this or any of Taylor & Francis or Routledge’s collection of thousands of eBooks please go to www.eBookstore.tandf.co.uk.” Second edition published 2004 All rights reserved. No part of this book may be reproduced or