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MINIREVIEW Idiotypic Vaccines and Infectious Diseases JACQUES R
INFECTION AND IMMUNITY, June 1988, p. 1407-1413 Vol. 56, No. 6 0019-9567/88/061407-07$02.00/0 Copyright © 1988, American Society for Microbiology MINIREVIEW Idiotypic Vaccines and Infectious Diseases JACQUES R. HIERNAUX Laboratory of Microbial Immunity, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892 INTRODUCTION If we accept the view that idiotypic interactions play a role in the regulation of the immune response to infectious The discovery of vaccination by Jenner, as well as the agents, various types of idiotypic manipulations (the injec- development of the principle of vaccines by Pasteur, had an tion of internal-image-bearing antibody being one of them) enormous impact on the eradication of many infectious could influence ongoing regulatory processes. On the basis diseases. These developments opened the road to the devel- of the idiotypic-network hypothesis, the idiotypic cascade opment of attenuated (i.e., live) or inactivated (i.e., nonin- presented in Fig. 1 can fectious) vaccines; however, such vaccines are not without be developed. Figure 1 follows problems and can have detrimental effects. Indeed, attenu- Jerne's original assumption that paratopes and idiotopes are ated vaccines can revert to a more virulent form, and distinct functional entitites. This allows us to deduce which inactivated vaccines may produce serious side effects. There interactions can potentially occur within the idiotypic cas- also are several infectious diseases for which no vaccines cade. For the sake of simplicity, I only present some of the are available. For example, many parasitic infections cannot members of the cascade and consider one or two idiotopes be prevented by vaccination. -
Treatment of Patients with Malignant Lymphomas with Monoclonal Antibodies
Bone Marrow Transplantation (2000) 25, Suppl. 2, S50–S53 2000 Macmillan Publishers Ltd All rights reserved 0268–3369/00 $15.00 www.nature.com/bmt Treatment of patients with malignant lymphomas with monoclonal antibodies H Tesch, A Engert, O Manzke, V Diehl and H Bohlen Klinik I fuer Innere Medizin, Universitaet zu Koeln, Koeln, Germany Summary: Results and discussion Malignant lymphomas represent a heterogenous group of B and T cell-derived malignancies. Most lymphomas Native monoclonal antibodies are sensitive to chemo- and radiotherapy, however many patients will eventually relapse. Immunothera- Since the first description of therapy using monoclonal anti- peutic approaches including monoclonal antibodies, bodies in 1979, several phase I and II trials have been cytokines or vaccination approaches may offer an alter- initiated to evaluate both safety and antitumoral activity of native treatment of chemotherapy-resistant residual this approach. Native MoAbs can kill a tumor cell through cells especially in cases with low tumor burden or various mechanisms including complement activation, anti- residual disease following chemo- or radiotherapy. body-dependent cellular cytotoxicity (ADCC), phago- Monoclonal antibodies have been successfully applied in cytosis of antibody-coated tumor cells, inhibition of cell their native form, or coupled with radioisotopes or tox- cycle progression, and induction of apoptosis.2,3 Alterna- ins to selectively destroy lymphoma cells and promising tively, MoAbs can eliminate a tumor cell by inhibiting results in early clinical trials have been obtained. Alter- growth factor receptors or molecules involved in signal natively, bispecific antibodies and idiotypic vaccination transduction and cell proliferation. strategies are used to target autologous T cells to elimin- The group of R Levy at Stanford reported on promising ate lymphoma cells. -
Citrullinated Protein Antibody Paratope Drives Epitope Spreading and Polyreactivity in Rheumatoid Arthritis
Arthritis & Rheumatology Vol. 0, No. 0, Month 2019, pp 1–11 DOI 10.1002/art.40760 © 2019, American College of Rheumatology Affinity Maturation of the Anti–Citrullinated Protein Antibody Paratope Drives Epitope Spreading and Polyreactivity in Rheumatoid Arthritis Sarah Kongpachith, Nithya Lingampalli, Chia-Hsin Ju, Lisa K. Blum, Daniel R. Lu, Serra E. Elliott, Rong Mao and William H. Robinson Objective. Anti–citrullinated protein antibodies (ACPAs) are a hallmark of rheumatoid arthritis (RA). While epitope spreading of the serum ACPA response is believed to contribute to RA pathogenesis, little is understood regarding how this phenomenon occurs. This study was undertaken to analyze the antibody repertoires of individuals with RA to gain insight into the mechanisms leading to epitope spreading of the serum ACPA response in RA. Methods. Plasmablasts from the blood of 6 RA patients were stained with citrullinated peptide tetramers to identify ACPA- producing B cells by flow cytometry. Plasmablasts were single-cell sorted and sequenced to obtain antibody repertoires. Sixty-nine antibodies were recombinantly expressed, and their anticitrulline reactivities were characterized using a cyclic citrullinated peptide enzyme- linked immuosorbent assay and synovial antigen arrays. Thirty- six mutated antibodies designed either to represent ancestral antibodies or to test paratope residues critical for binding, as determined from molecular modeling studies, were also tested for anticitrulline reactivities. Results. Clonally related monoclonal ACPAs and their shared ancestral antibodies each exhibited differential re- activity against citrullinated antigens. Molecular modeling identified residues within the complementarity-determining region loops and framework regions predicted to be important for citrullinated antigen binding. Affinity maturation re- sulted in mutations of these key residues, which conferred binding to different citrullinated epitopes and/or increased polyreactivity to citrullinated epitopes. -
Anti-Idiotype Antibody Generation and Application in Antibody Drug Discovery
Anti-idiotype Antibody Generation and Application in Antibody Drug Discovery Liusong Yin, PhD Senior Scientist, Group Leader Antibody Discovery, Antibody Department, GenScript [email protected] Apr 21st, 2016 Presentation Overview Anti-idiotype antibody introduction 1 2 Anti-idiotype antibody application 3 Anti-idiotype antibody development 4 Anti-idiotype antibody case study Make Research Easy 2 Structural overview of antibodies PDB ID: 1HZH Liusong Yin, 2014, A Dissertation Make Research Easy 3 Antibody ‘-types’ Isotype (species specific)– the phenotypic variations in the constant regions of the heavy and light chains Allotype (animal specific)– the genetically determined difference in antibodies between individuals in the same species, mainly a couple AA differences in constant region Idiotype (antigen specific)– the antigen binding specificity defined by the distinctive sequence in the variable region of antibodies Make Research Easy 4 ‘-topes’ in anti-idiotype antibodies (anti-IDs) Idiotope – the antigenic determinants in or close to the complementarity determining region (CDR) in variable region Epitope Paratope Paratope – the part of an Ab that recognizes an antigen, the antigen-binding site of an Ab Epitope – the part of the antigen to which the paratope binds Anti-IDs – anti-idiotype antibodies which recognize the shared feature of idiotopes Make Research Easy 5 Different types of Anti-IDs Antigen-blocking Non-blocking Complex-specific Anti-ID Drug Target Anti-ID Anti-ID Antibody drug Antibody drug Antibody drug -
In the United States Court of Federal Claims OFFICE of SPECIAL MASTERS Filed: July 28, 2020
In the United States Court of Federal Claims OFFICE OF SPECIAL MASTERS Filed: July 28, 2020 * * * * * * * * * * * * * * * * MICHAEL PAVAN, next friend of * J.P., a minor, * PUBLISHED * Petitioner, * No. 14-60V * v. * Special Master Gowen * SECRETARY OF HEALTH * Entitlement; Significant AND HUMAN SERVICES, * Aggravation; Varicella; * Chronic Inflammatory Respondent. * Demyelinating Polyneuropathy * * * * * * * * * * * * * * * * (“CIDP”). Scott W. Rooney, Nemes Rooney P.C., Farmington Hills, MI, for petitioner. Kyle E. Pozza, United States Department of Justice, Washington, DC, for respondent. DECISION1 On January 24, 2014, Michael Pavan (“petitioner”), as next friend of J.P., a minor, filed a petition in the National Vaccine Injury Compensation Program.2 Petitioner alleges that as a result of J.P. receiving the varicella vaccination on January 28, 2011, he suffered a significant aggravation of his Chronic Inflammatory Demyelinating Polyneuropathy (“CIDP”). Amended Petition at ¶¶ 4, 5, & 16 (ECF No. 26); Petitioner’s (“Pet.”) Post-hearing Brief at 2 (ECF No. 151). Based on a full review of the evidence and testimony presented, I find that petitioner has not established by a preponderance of the evidence that the varicella vaccination significantly aggravated J.P.’s CIDP and therefore, compensation must be denied and the petition dismissed. 1 In accordance with the E-Government Act of 2002, 44 U.S.C. § 3501 (2012), because this opinion contains a reasoned explanation for the action in this case, this opinion will be posted on the website of the United States Court of Federal Claims. This means the opinion will be available to anyone with access to the internet. As provided by 42 U.S.C. -
(12) United States Patent (10) Patent No.: US 8,796,427 B2 Spee Et Al
USOO8796427B2 (12) United States Patent (10) Patent No.: US 8,796,427 B2 Spee et al. (45) Date of Patent: Aug. 5, 2014 (54) HUMANIZED ANTI-HUMAN NKG2A EP 1036327 A2 9, 2000 MONOCLONAL ANTIBODY JP O3112485 A 5, 1991 JP O3112486 A 5, 1991 (75) Inventors: Petrus Johannes Louis Spee, Allerød E. 2025. A 3.28. (DK); Jianhe Chen, Beijing (CN); JP O3112484 U. 8, 2005 Soren Berg Padkjaer, Vaerlose (DK); WO 99.28748 A2 6, 1999 Jing Su, Beijing (CN); Jinchao Zhang, W 94.9. A2 258 Beijing (CN); Jiujiu Yu, Zhejiang (CN) WO O3,OO8449 A1 1, 2003 WO O3,O95965 A2 11/2003 (73) Assignee: Novo Nordisk A/S, Bagsvaerd (DK) WO 2004.?003.019 A2 1/2004 WO WO-2004/056312 T 2004 (*) Notice: Subject to any disclaimer, the term of this WO WO 2006/070286 12, 2004 patent is extended or adjusted under 35 W. 3:39:23, A. i58. U.S.C. 154(b) by 153 days. WO WO 2006O70286 A2 * T 2006 WO 2007042573 A2 4/2007 (21) Appl. No.: 12/811,990 WO WO 2007042573 A2 * 4, 2007 WO WO 2008/OO9545 1, 2008 (22) PCT Filed: Jan. 23, 2009 WO 2009/092805 A1 T 2009 (86). PCT No.: PCT/EP2009/050795 OTHER PUBLICATIONS S371 (c)(1), Petrie, E. J., et al. (2008), J. Exp. Med. 205: 725-735.* (2), (4) Date: Nov. 19, 2010 Bagot et al., “Functional Inhibitory Receptors Expressed by a Cuta neous T-Cell Lymphoma-Specific Cytolytic Clonal T-Cell Popula (87) PCT Pub. No.: WO2009/0928.05 tion.” Journal ofInvestigative Dermatology, 2000, vol. -
Neural Message Passing for Joint Paratope-Epitope Prediction
Neural message passing for joint paratope-epitope prediction Alice Del Vecchio 1 Andreea Deac 2 3 4 Pietro Lio` 1 Petar Velickoviˇ c´ 4 Abstract Hence, both the antibody and the antigen may be viewed as sequences of amino acid residues. Their binding site Antibodies are proteins in the immune system consists of two regions: the paratope on the antibody, and which bind to antigens to detect and neutralise the epitope on its corresponding antigen. Predicting them them. The binding sites in an antibody-antigen can therefore be posed as a binary classification problem: interaction are known as the paratope and epitope, for each amino acid residue in the antibody and antigen, respectively, and the prediction of these regions respectively, do they participate in the binding? is key to vaccine and synthetic antibody develop- ment. Contrary to prior art, we argue that paratope However, proteins can also be considered as graphs with its and epitope predictors require asymmetric treat- residues as nodes, with two nodes sharing an edge if their ment, and propose distinct neural message passing residues are spatially close. Recently, such contact graphs architectures that are geared towards the specific have been directly leveraged for protein function prediction aspects of paratope and epitope prediction, re- by Gligorijevic et al.(2020). spectively. We obtain significant improvements The advantage of considering a sequence based approach on both tasks, setting the new state-of-the-art and over a graph-based approach is that structural information recovering favourable qualitative predictions on is much harder to obtain. However, recent advancements antigens of relevance to COVID-19. -
Antigen Mimicry-Recognizing Paratope
Structural Evaluation of a Mimicry-Recognizing Paratope: Plasticity in Antigen−Antibody Interactions Manifests in Molecular Mimicry This information is current as of September 28, 2021. Suman Tapryal, Vineet Gaur, Kanwal J. Kaur and Dinakar M. Salunke J Immunol published online 3 June 2013 http://www.jimmunol.org/content/early/2013/06/01/jimmun ol.1203260 Downloaded from Why The JI? Submit online. http://www.jimmunol.org/ • 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 by guest on September 28, 2021 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. Published June 3, 2013, doi:10.4049/jimmunol.1203260 The Journal of Immunology Structural Evaluation of a Mimicry-Recognizing Paratope: Plasticity in Antigen–Antibody Interactions Manifests in Molecular Mimicry Suman Tapryal,*,1 Vineet Gaur,*,1 Kanwal J. Kaur,* and Dinakar M. Salunke*,† Molecular mimicry manifests antagonistically with respect to the specificity of immune recognition. However, it often occurs because different Ags share surface topologies in terms of shape or chemical nature. -
Idiotype-Recognizing T Helper Cells That Are Not Idiotype Specific*
IDIOTYPE-RECOGNIZING T HELPER CELLS THAT ARE NOT IDIOTYPE SPECIFIC* BY MARY McNAMARA AND HEINZ KOHLER From the Department of Molecular Immunology, Roswell Park Memorial Institute, New York State Department of Health, Buffalo, NY 14263 The network hypothesis (1) postulates that B and T cells interact via comple- mentary idiotypic structures (2). This assumption creates a satisfying symmetry in the immune system by which both compartments would use similar receptor structures encoded by a single pool of variable genes. Experimental support for the sharing of idiotypes between B and T cells has been substantial (3-6). Most of this evidence comes from the demonstration that an antiidiotype antibody functionally interacts with T cells or can bind to T cells or T cell factors. These findings, however, do not prove that T cell receptors or factors use the same genes as B cells. On the contrary, the recent failure to detect active gene rearrangements in specific T cell clones (7, 8) indicates that T cells use other than Ig genes (9). One approach to studying T cell receptors is to analyze their specificity and compare it with the specificity of B cells for the same determinant. With respect to the T-B interaction in the immune network, a comparative analysis of how B and T cells recognize idiotypes would address the question of T cell receptor specificity. In a previous study we found (10) that T helper cells which recognize idiotypes as carriers for a hapten-specific antibody response recognize the TEPC-15 (T 15) 1 proteins and MOPC-167 (M 167) equally well. -
Theories of Antibodies Production
THEORIES OF ANTIBODIES PRODUCTION 1. Instructive Theories a. Direct Template Theory b. Indirect Template Theory 2. Selective Theories a. Natural Selection Theory b. Side Chain Theory c. Clonal Selection Theory d. Immune Network Theory INSTRUCTIVE THEORIES Instructive theories suggest that an immunocompetent cell is capable of synthesizing antibodies of all specificity. The antigen directs the immunocompetent cell to produce complementary antibodies. According to these theories the antigen play a central role in determining the specificity of antibody molecule. Two instructive theories are postulated as follows: Direct template theory: This theory was first postulated by Breinl and Haurowitz (1930). They suggested that a particular antigen or antigenic determinants would serve as a template against which antibodies would fold. The antibody molecule would thereby assume a configuration complementary to antigen template. This theory was further advanced as Direct Template Theory by Linus Pauling in 1940s. Indirect template theory: This theory was first postulated by Burnet and Fenner (1949). They suggested that the entry of antigenic determinants into the antibody producing cells induced a heritable change in these cells. A genocopy of the antigenic determinant was incorporated in genome of these cells and transmitted to the progeny cells. However, this theory that tried to explain specificity and secondary responses is no longer accepted. SELECTIVE THEORIES Selective theories suggest that it is not antigen, but the antibody molecule that play a central role in determining its specificity. The immune system already possess pre-formed antibodies of different specificities prior to encounter with an antigen. Three selective theories were postulated as follows: Side chain theory: This theory was proposed by Ehrlich (1898). -
IMMUNOCHEMICAL TECHNIQUES Antigens Antibodies
Imunochemical Techniques IMMUNOCHEMICAL TECHNIQUES (by Lenka Fialová, translated by Jan Pláteník a Martin Vejražka) Antigens Antigens are macromolecules of natural or synthetic origin; chemically they consist of various polymers – proteins, polypeptides, polysaccharides or nucleoproteins. Antigens display two essential properties: first, they are able to evoke a specific immune response , either cellular or humoral type; and, second, they specifically interact with products of this immune response , i.e. antibodies or immunocompetent cells. A complete antigen – immunogen – consists of a macromolecule that bears antigenic determinants (epitopes) on its surface (Fig. 1). The antigenic determinant (epitope) is a certain group of atoms on the antigen surface that actually interacts with the binding site on the antibody or lymphocyte receptor for the antigen. Number of epitopes on the antigen surface determines its valency. Low-molecular-weight compound that cannot as such elicit production of antibodies, but is able to react specifically with the products of immune response, is called hapten (incomplete antigen) . antigen epitopes Fig. 1. Antigen and epitopes Antibodies Antibodies are produced by plasma cells that result from differentiation of B lymphocytes following stimulation with antigen. Antibodies are heterogeneous group of animal glycoproteins with electrophoretic mobility β - γ, and are also called immunoglobulins (Ig) . Every immunoglobulin molecule contains at least two light (L) and two heavy (H) chains connected with disulphidic bridges (Fig. 2). One antibody molecule contains only one type of light as well as heavy chain. There are two types of light chains - κ and λ - that determine type of immunoglobulin molecule; while heavy chains exist in 5 isotypes - γ, µ, α, δ, ε; and determine class of immunoglobulins - IgG, IgM, IgA, IgD and IgE . -
Immunoglobulins.Pdf
Immunoglobulins RAKESH SHARDA Department of Veterinary Microbiology NDVSU College of Veterinary Science & A.H., MHOW Structure and Functions Definition • Immunoglobulins are glycoprotein molecules belonging to γ-globulins class of plasma proteins produced in response to a non-self or an altered self immunogen and act as antibodies in humoral adaptive immune response. • Immunoglobulins are produced in vertebrates by plasma cells, which are the terminally differentiated B lymphocytes + - albumin globulins α α β γ Amount of protein of Amount 1 2 Immune serum Ag adsorbed serum Mobility Basic Immunoglobulin Structure • γ-globulin • glycoprotein • heterodimer • ‘Y’ shaped molecule • coded by immunoglobulin supergene family Basic Immunoglobulin Structure Disulfide bond Carbohydrate C V L L CH CH CH 2 3 V 1 Hinge Region H Immunoglobulin Structure – a monomer (H2L2) Disulfide bond • 2 Heavy & 2 Light chains Carbohydrate • Disulfide bonds CL – Inter-chain VL CH2 CH3 – Intra-chain CH1 Hinge Region VH Immunoglobulin Structure • Variable & Constant Disulfide bond regions in each chain – VL & CL Carbohydrate – VH & CH C • Forms globular loop L like structure called as VL CH2 CH3 domains CH1 Hinge Region • Hinge Region VH Basic Immunoglobulin Structure • A monomer (H2L2) of an immunoglobulin molecule is made up of: – 2 Light Chains (identical) ~25 KDa – 2 Heavy Chains (identical) ~50 KDa • Each light chain bound to heavy chain by disulfide bonds (H-L) • Each heavy chain bound to heavy chain by disulfide bonds (H-H) • The ¼ portion of each H chain and ½ of each L chain towards amino terminal are more variable (110 aa each - VH and VL) in amino acid composition as compared to the remaining portion towards carboxyl terminal (CH and CL) in each monomer, which has nearly constant composition in each domain of a given isotype.