1
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Purcell RA, Aurelia LC, Esterbauer R, Allen LF, Bond KA, Williamson DA, Trevillyan JM, Trubiano JA, Juno JJ, Wheatley AK, Davenport MP, Nguyen THO, Kedzierska K, Kent SJ, Selva KJ, Chung AW. Immunoglobulin G genetic variation can confound assessment of antibody levels via altered binding to detection reagents. Clin Transl Immunology 2024; 13:e1494. [PMID: 38433763 PMCID: PMC10902689 DOI: 10.1002/cti2.1494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/28/2024] [Accepted: 01/29/2024] [Indexed: 03/05/2024] Open
Abstract
Objectives Amino acid variations across more than 30 immunoglobulin (Ig) allotypes may introduce structural changes that influence recognition by anti-Ig detection reagents, consequently confounding interpretation of antibody responses, particularly in genetically diverse cohorts. Here, we assessed a panel of commercial monoclonal anti-IgG1 clones for capacity to universally recognise two dominant IgG1 haplotypes (G1m-1,3 and G1m1,17). Methods Four commercial monoclonal anti-human IgG1 clones were assessed via ELISAs and multiplex bead-based assays for their ability to bind G1m-1,3 and G1m1,17 IgG1 variants. Detection antibodies were validated against monoclonal IgG1 allotype standards and tested for capacity to recognise antigen-specific plasma IgG1 from G1m-1,3 and G1m1,17 homozygous and heterozygous SARS-CoV-2 BNT162b2 vaccinated (n = 28) and COVID-19 convalescent (n = 44) individuals. An Fc-specific pan-IgG detection antibody corroborated differences between hinge- and Fc-specific anti-IgG1 responses. Results Hinge-specific anti-IgG1 clone 4E3 preferentially bound G1m1,17 compared to G1m-1,3 IgG1. Consequently, SARS-CoV-2 Spike-specific IgG1 levels detected in G1m1,17/G1m1,17 BNT162b2 vaccinees appeared 9- to 17-fold higher than in G1m-1,3/G1m-1,3 vaccinees. Fc-specific IgG1 and pan-IgG detection antibodies equivalently bound G1m-1,3 and G1m1,17 IgG1 variants, and detected comparable Spike-specific IgG1 levels between haplotypes. IgG1 responses against other human coronaviruses and influenza were similarly poorly detected by 4E3 anti-IgG1 in G1m-1,3/G1m-1,3 subjects. Conclusion Anti-IgG1 clone 4E3 confounds assessment of antibody responses in clinical cohorts owing to bias towards detection of G1m1,17 IgG1 variants. Validation of anti-Ig clones should include evaluation of binding to relevant antibody variants, particularly as the role of immunogenetics upon humoral immunity is increasingly explored in diverse populations.
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Affiliation(s)
- Ruth A Purcell
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - L Carissa Aurelia
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Robyn Esterbauer
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Lilith F Allen
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Katherine A Bond
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
- Victorian Infectious Diseases Reference Laboratory (VIDRL)The Peter Doherty Institute for Infection and ImmunityMelbourneVICAustralia
| | - Deborah A Williamson
- Victorian Infectious Diseases Reference Laboratory (VIDRL)The Peter Doherty Institute for Infection and ImmunityMelbourneVICAustralia
- Walter and Eliza Hall Institute of Medical ResearchParkvilleVICAustralia
- Department of Infectious DiseasesThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Janine M Trevillyan
- Department of Infectious DiseasesThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
- Centre for Antibiotic Allergy and Research, Department of Infectious DiseasesAustin HealthHeidelbergVICAustralia
| | - Jason A Trubiano
- Centre for Antibiotic Allergy and Research, Department of Infectious DiseasesAustin HealthHeidelbergVICAustralia
- Department of MedicineUniversity of MelbourneParkvilleVICAustralia
- Department of Infectious DiseasesPeter MacCallum Cancer CentreMelbourneVICAustralia
- National Centre for Infections in CancerPeter MacCallum Cancer CentreMelbourneVICAustralia
| | - Jennifer J Juno
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Adam K Wheatley
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | | | - Thi HO Nguyen
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Katherine Kedzierska
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Stephen J Kent
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
- Melbourne Sexual Health Centre and Department of Infectious Diseases, Alfred Health, Central Clinical SchoolMonash UniversityMelbourneVICAustralia
| | - Kevin John Selva
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
| | - Amy W Chung
- Department of Microbiology and ImmunologyThe Peter Doherty Institute for Infection and Immunity, University of MelbourneMelbourneVICAustralia
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Fall AKDJ, Dechavanne C, Sabbagh A, Guitard E, Milet J, Garcia A, Dugoujon JM, Courtin D, Migot-Nabias F. Susceptibility to Plasmodium falciparum Malaria: Influence of Combined Polymorphisms of IgG3 Gm Allotypes and Fc Gamma Receptors IIA, IIIA, and IIIB. Front Immunol 2020; 11:608016. [PMID: 33424858 PMCID: PMC7786284 DOI: 10.3389/fimmu.2020.608016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/13/2020] [Indexed: 02/04/2023] Open
Abstract
The binding of immunoglobulin (Ig) to Fc gamma receptors (FcgR) at the immune cell surface is an important step to initiate immunological defense against malaria. However, polymorphisms in receptors and/or constant regions of the IgG heavy chains may modulate this binding. Here, we investigated whether polymorphisms located in FcgR and constant regions of the heavy chain of IgG are associated with susceptibility to P. falciparum malaria. For this purpose, a clinical and parasitological follow-up on malaria was conducted among 656 infants in southern Benin. G3m allotypes (from total IgG3) were determined by a serological method of hemagglutination inhibition. FcgRIIA 131R/H and FcgRIIIA 176F/V genotypes were determined using the TaqMan method and FcgRIIIB NA1/NA2 genotypes were assessed by polymerase chain reaction using allele-specific primers. Association analyses between the number of malaria infections during the follow-up and polymorphisms in IgG G3m allotypes and FcgR were studied independently by zero inflated binomial negative regression. The influence of combinations of G3m allotypes and FcgRIIA/FcgRIIIA/FcgRIIIB polymorphisms on the number of P. falciparum infections, and their potential interaction with environmental exposure to malaria was assessed by using the generalized multifactor dimensionality reduction (GMDR) method. Results showed that individual carriage of G3m24 single allotype and of G3m5,6,10,11,13,14,24 phenotype was independently associated with a high risk of malaria infection. A risk effect for G3m6 was observed only under high environmental exposure. FcgRIIIA 176VV single genotype and combined carriage of FcgRIIA 131RH/FcgRIIIA 176VV/FcgRIIIB NA1NA2, FcgRIIA 131HH/FcgRIIIA 176FF/FcgRIIIB NA1NA1, FcgRIIA 131HH/FcgRIIIA 176VV/FcgRIIIB NA2NA2 and FcgRIIA 131HH/FcgRIIIA 176VV/FcgRIIIB NA1NA2 genotypes were related to a high number of malaria infections. The risk was accentuated for FcgRIIIA 176VV when considering the influence of environmental exposure to malaria. Finally, the GMDR analysis including environmental exposure showed strengthened associations with a malaria risk when FcgRIIA/FcgRIIIA/FcgRIIIB genotypes were combined to G3m5,6,11,24 and G3m5,6,10,11,13,15,24 phenotypes or G3m10 and G3m13 single allotypes. Our results highlight the relevance of studying IgG heavy chain and FcgR polymorphisms, independently as well as in combination, in relation to the individual susceptibility to P. falciparum infection. The intensity of individual exposure to mosquito bites was demonstrated to impact the relationships found.
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Affiliation(s)
| | - Celia Dechavanne
- Université de Paris, Institut de Recherche pour le Développement (IRD), UMR 261 MERIT, Paris, France
| | - Audrey Sabbagh
- Université de Paris, Institut de Recherche pour le Développement (IRD), UMR 261 MERIT, Paris, France
| | - Evelyne Guitard
- CNRS UMR 5288 Laboratoire d'Anthropologie Moléculaire et d'Imagerie de Synthèse (AMIS), Université Paul Sabatier Toulouse III, Toulouse, France
| | - Jacqueline Milet
- Université de Paris, Institut de Recherche pour le Développement (IRD), UMR 261 MERIT, Paris, France
| | - André Garcia
- Université de Paris, Institut de Recherche pour le Développement (IRD), UMR 261 MERIT, Paris, France
| | - Jean-Michel Dugoujon
- CNRS UMR 5288 Laboratoire d'Anthropologie Moléculaire et d'Imagerie de Synthèse (AMIS), Université Paul Sabatier Toulouse III, Toulouse, France
| | - David Courtin
- Université de Paris, Institut de Recherche pour le Développement (IRD), UMR 261 MERIT, Paris, France
| | - Florence Migot-Nabias
- Université de Paris, Institut de Recherche pour le Développement (IRD), UMR 261 MERIT, Paris, France
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3
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Warrender AK, Kelton W. Beyond Allotypes: The Influence of Allelic Diversity in Antibody Constant Domains. Front Immunol 2020; 11:2016. [PMID: 32973808 PMCID: PMC7461860 DOI: 10.3389/fimmu.2020.02016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 07/24/2020] [Indexed: 01/25/2023] Open
Abstract
Polymorphic diversity in antibody constant domains has long been defined by allotypic motifs that cross react with the sera of other individuals. Improvements in sequencing technologies have led to the discovery of a large number of new allelic sequences that underlie this diversity. Many of the point mutations lie outside traditional allotypic motifs suggesting they do not elicit immunogenic responses. As antibodies play an important role in immune defense and biotechnology, understanding how this newly resolved diversity influences the function of antibodies is important. This review investigates the current known diversity of antibody alleles at a protein level for each antibody isotype as well as the kappa and lambda light chains. We focus on evidence emerging for how these mutations perturb antibody interactions with antigens and Fc receptors that are critical for function, as well as the influence this might have on the use of antibodies as therapeutics and reagents.
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Affiliation(s)
| | - William Kelton
- Te Huataki Waiora School of Health, The University of Waikato, Hamilton, New Zealand
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4
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Damelang T, Rogerson SJ, Kent SJ, Chung AW. Role of IgG3 in Infectious Diseases. Trends Immunol 2019; 40:197-211. [PMID: 30745265 DOI: 10.1016/j.it.2019.01.005] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/14/2019] [Accepted: 01/14/2019] [Indexed: 12/20/2022]
Abstract
IgG3 comprises only a minor fraction of IgG and has remained relatively understudied until recent years. Key physiochemical characteristics of IgG3 include an elongated hinge region, greater molecular flexibility, extensive polymorphisms, and additional glycosylation sites not present on other IgG subclasses. These characteristics make IgG3 a uniquely potent immunoglobulin, with the potential for triggering effector functions including complement activation, antibody (Ab)-mediated phagocytosis, or Ab-mediated cellular cytotoxicity (ADCC). Recent studies underscore the importance of IgG3 effector functions against a range of pathogens and have provided approaches to overcome IgG3-associated limitations, such as allotype-dependent short Ab half-life, and excessive proinflammatory activation. Understanding the molecular and functional properties of IgG3 may facilitate the development of improved Ab-based immunotherapies and vaccines against infectious diseases.
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Affiliation(s)
- Timon Damelang
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Stephen J Rogerson
- Department of Medicine, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Stephen J Kent
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Amy W Chung
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia.
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5
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Immunoglobulin GM and KM genes and measles vaccine-induced humoral immunity. Vaccine 2017; 35:5444-5447. [PMID: 28274637 DOI: 10.1016/j.vaccine.2017.02.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 11/20/2022]
Abstract
Identifying genetic polymorphisms that explain variations in humoral immunity to live measles virus vaccine is of great interest. Immunoglobulin GM (heavy chain) and KM (light chain) allotypes are genetic markers known to be associated with susceptibility to several infectious diseases. We assessed associations between GM and KM genotypes and measles vaccine humoral immunity (neutralizing antibody titers) in a combined cohort (n=1796) of racially diverse healthy individuals (age 18-41years). We did not discover any significant associations between GM and/or KM genotypes and measles vaccine-induced neutralizing antibody titers. African-American subjects had higher neutralizing antibody titers than Caucasians (1260mIU/mL vs. 740mIU/mL, p=7.10×10-13), and those titers remained statistically significant (p=1.68×10-09) after adjusting for age at enrollment and time since last vaccination. There were no statistically significant sex-specific differences in measles-induced neutralizing antibody titers in our study (p=0.375). Our data indicate a surprising lack of evidence for an association between GM and KM genotypes and measles-specific neutralizing antibody titers, despite the importance of these immune response genes.
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6
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Lopez-Yglesias AH, Lu CC, Smith KD. Response to Comment on "Flagellin induces antibody responses through a TLR5- and inflammasome-independent pathway". THE JOURNAL OF IMMUNOLOGY 2014; 192:4941-2. [PMID: 24837149 DOI: 10.4049/jimmunol.1400685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
| | - Chun-Chi Lu
- Department of Pathology, University of Washington, Seattle, WA 98195
| | - Kelly D Smith
- Department of Pathology, University of Washington, Seattle, WA 98195
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7
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Iriemenam NC, Pandey JP, Williamson J, Blackstock AJ, Yesupriya A, Namboodiri AM, Rocca KM, van Eijk AM, Ayisi J, Oteino J, Lal RB, ter Kuile FO, Steketee R, Nahlen B, Slutsker L, Shi YP. Association between immunoglobulin GM and KM genotypes and placental malaria in HIV-1 negative and positive women in western Kenya. PLoS One 2013; 8:e53948. [PMID: 23326546 PMCID: PMC3543394 DOI: 10.1371/journal.pone.0053948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 12/06/2012] [Indexed: 01/24/2023] Open
Abstract
Immunoglobulin (Ig) GM and KM allotypes, genetic markers of γ and κ chains, are associated with humoral immune responsiveness. Previous studies have shown the relationships between GM6-carrying haplotypes and susceptibility to malaria infection in children and adults; however, the role of the genetic markers in placental malaria (PM) infection and PM with HIV co-infection during pregnancy has not been investigated. We examined the relationship between the gene polymorphisms of Ig GM6 and KM allotypes and the risk of PM infection in pregnant women with known HIV status. DNA samples from 728 pregnant women were genotyped for GM6 and KM alleles using polymerase chain reaction-restriction fragment length polymorphism method. Individual GM6 and KM genotypes and the combined GM6 and KM genotypes were assessed in relation to PM in HIV-1 negative and positive women, respectively. There was no significant effect of individual GM6 and KM genotypes on the risk of PM infection in HIV-1 negative and positive women. However, the combination of homozygosity for GM6(+) and KM3 was associated with decreased risk of PM (adjusted OR, 0.25; 95% CI, 0.08-0.8; P = 0.019) in HIV-1 negative women while in HIV-1 positive women the combination of GM6(+/-) with either KM1-3 or KM1 was associated with increased risk of PM infection (adjusted OR, 2.10; 95% CI, 1.18-3.73; P = 0.011). Hardy-Weinberg Equilibrium (HWE) tests further showed an overall significant positive F(is) (indication of deficit in heterozygotes) for GM6 while there was no deviation for KM genotype frequency from HWE in the same population. These findings suggest that the combination of homozygous GM6(+) and KM3 may protect against PM in HIV-1 negative women while the HIV-1 positive women with heterozygous GM6(+/-) combined with KM1-3 or KM1 may be more susceptible to PM infection. The deficit in heterozygotes for GM6 further suggests that GM6 could be under selection likely by malaria infection.
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Affiliation(s)
- Nnaemeka C. Iriemenam
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Janardan P. Pandey
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina, United States of America
- * E-mail: (YPS); (JPP)
| | - John Williamson
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Anna J. Blackstock
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- Atlanta Research and Education Foundation/VA Medical Center, Decatur, Georgia, United States of America
| | - Ajay Yesupriya
- National Office of Public Health Genomics, Coordinating Center for Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Aryan M. Namboodiri
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Keith M. Rocca
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Anna Maria van Eijk
- Centre for Vector Biology and Control Research, Kenyan Medical Research Institute, Kisumu, Kenya
| | - John Ayisi
- Centre for Vector Biology and Control Research, Kenyan Medical Research Institute, Kisumu, Kenya
| | - Juliana Oteino
- New Nyanza Provincial General Hospital, Ministry of Health, Kisumu, Kenya
| | - Renu B. Lal
- Division of AIDS, STD, TB Laboratory Research, National Center for HIV, STD, TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Feiko O. ter Kuile
- Child and Reproductive Health Group, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Richard Steketee
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Bernard Nahlen
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Laurence Slutsker
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Ya Ping Shi
- Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- * E-mail: (YPS); (JPP)
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Diesterbeck US, Aboelhassan DM, Stein SK, Czerny CP. Detection of new allotypic variants of bovine λ-light chain constant regions in different cattle breeds. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2012; 36:130-139. [PMID: 21741991 DOI: 10.1016/j.dci.2011.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Accepted: 06/23/2011] [Indexed: 05/31/2023]
Abstract
In the cattle breeds German Black Pied (GBP), German Simmental (GS), Holstein Friesian (HF), Aubrac (A) three transcribed allotypic variants in isotype IGLC2 and five allotypic variants in isotype IGLC3 were identified. Substitutions within the putative interface to CH1 at position 11 and 79 were noted. In IGLC2(b), K79E led to a charge conversion. In IGLC3(b) and IGLC3(c), the E79N replacement removed the charge while the T11K substitution resulted in a positively charged amino acid residue. In addition, D15 and T16 were found in IGLC2(c), IGLC3(b), and IGLC3(c). Substitutions located on the outer site of the molecule were observed in IGLC2(b) (V40, H45.5), IGLC2(c) (A1, V40, D77), IGLC3(b) (A1, D77, D109, P127), IGLC3(c) (A1, G45.5, D77, D109, P127), IGLC3(d) (D109), and IGLC3(e) (A1). Amino acid residues P83 (IGLC2(c), IGLC3(b), IGLC3(c)), N93 (IGLC2(b)), D93 (IGLC3(b)), and G93 (IGLC3(c)) were positioned in cavities but seemed to be accessible for solvents.
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Affiliation(s)
- Ulrike S Diesterbeck
- Department of Animal Sciences, Institute of Veterinary Medicine, Division of Microbiology and Animal Hygiene, Faculty of Agricultural Sciences, Georg-August University Goettingen, Burckhardtweg 2, 37077 Goettingen, Germany.
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9
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Transcriptional analysis of equine λ-light chains in the horse breeds Rhenish-German Coldblood and Hanoverian Warmblood. Vet Immunol Immunopathol 2012; 145:50-65. [DOI: 10.1016/j.vetimm.2011.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 10/14/2011] [Accepted: 10/17/2011] [Indexed: 11/23/2022]
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10
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Migot-Nabias F, Lokossou AG, Vigan-Womas I, Guitard E, Guillotte M, Noukpo JM, Mercereau-Puijalon O, Dugoujon JM, Garcia A. Combined effects of Gm or Km immunoglobulin allotypes and age on antibody responses to Plasmodium falciparum VarO rosetting variant in Benin. Microbes Infect 2011; 13:771-5. [DOI: 10.1016/j.micinf.2011.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 03/14/2011] [Accepted: 04/04/2011] [Indexed: 11/30/2022]
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11
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Giha HA, Nasr A, Iriemenam NC, Troye-Blomberg M, Berzins K, Pandey JP, Elghazali G. Associations of multi-locus polymorphisms in an immune network with susceptibility to uncomplicated Plasmodium falciparum malaria in Daraweesh village, Eastern Sudan. INFECTION GENETICS AND EVOLUTION 2011; 11:1674-81. [PMID: 21729768 DOI: 10.1016/j.meegid.2011.06.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2011] [Revised: 06/09/2011] [Accepted: 06/21/2011] [Indexed: 11/30/2022]
Abstract
Susceptibility to uncomplicated malaria (UM), as to other forms of the disease, is genetically determined. Over 9-years of clinical and parasitological follow up of inhabitants of Daraweesh, in Eastern Sudan, the relative susceptibility to UM was estimated in terms of number of episodes experienced by each individual. Previously, we reported that the levels of IgG2 and IgG3 to Pf332-C231 malaria antigen are negatively correlated with number of malaria episodes. In addition, four molecular markers for malaria susceptibility (CRP -286, GM/KM haplotypes, FcγRIIa131 and HbAS) were tested. In this study, the above data were combined and reanalysed. The CRP -286A allele and GM 1,17 5,13,14,6 phenotype were previously found to be associated with increased susceptibility to malaria; however, individuals have both polymorphism together were not more susceptible to UM than the non-carriers of the same double polymorphism. The FcγRIIa-RR131 and HbAA genotypes taken individually or as double polymorphism were not associated with malaria susceptibility; however, their combination with any or both of the former polymorphisms was mostly associated with increased susceptibility to malaria. None of the four markers were associated with the levels of IgG2 and IgG3 against Pf332-C231. In conclusion, while our data support the polygenic nature of susceptibility to UM and highlighted the role of immune markers polymorphisms, the combinations of these markers were not predictable, i.e. the combination of the susceptibility markers will not necessarily render the carriers more susceptible to UM.
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Affiliation(s)
- Hayder A Giha
- Department of Biochemistry, Faculty of Medicine, Arabian Gulf University (AGU), Bahrain, Sudan.
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12
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Haplotypes of the bovine IgG2 heavy gamma chain in tick-resistant and tick-susceptible breeds of cattle. Immunogenetics 2011; 63:319-24. [PMID: 21301827 PMCID: PMC3068256 DOI: 10.1007/s00251-011-0515-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 01/23/2011] [Indexed: 01/21/2023]
Abstract
Bovines present contrasting, heritable phenotypes of infestations with the cattle tick, Rhipicephalus (Boophilus) microplus. Tick salivary glands produce IgG-binding proteins (IGBPs) as a mechanism for escaping from host antibodies that these ectoparasites ingest during blood meals. Allotypes that occur in the constant region of IgG may differ in their capacity to bind with tick IGBPs; this may be reflected by the distribution of distinct allotypes according to phenotypes of tick infestations. In order to test this hypothesis, we investigated the frequency of haplotypes of bovine IgG2 among tick-resistant and tick-susceptible breeds of bovines. Sequencing of the gene coding for the heavy chain of IgG2 from 114 tick-resistant (Bos taurus indicus, Nelore breed) and tick-susceptible (B. t. taurus, Holstein breed) bovines revealed SNPs that generated 13 different haplotypes, of which 11 were novel and 5 were exclusive of Holstein and 3 of Nelore breeds. Alignment and modeling of coded haplotypes for hinge regions of the bovine IgG2 showed that they differ in the distribution of polar and hydrophobic amino acids and in shape according to the distribution of these amino acids. We also found that there was an association between genotypes of the constant region of the IgG2 heavy chain with phenotypes of tick infestations. These findings open the possibility of investigating if certain IgG allotypes hinder the function of tick IGBPs. If so, they may be markers for breeding for resistance against tick infestations.
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Pandey JP, Morais CG, Fontes CJ, Braga EM. Immunoglobulin GM 3 23 5,13,14 phenotype is strongly associated with IgG1 antibody responses to Plasmodium vivax vaccine candidate antigens PvMSP1-19 and PvAMA-1. Malar J 2010; 9:229. [PMID: 20696056 PMCID: PMC2924350 DOI: 10.1186/1475-2875-9-229] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Accepted: 08/09/2010] [Indexed: 01/25/2023] Open
Abstract
Background Humoral immune responses play a key role in the development of immunity to malaria, but the host genetic factors that contribute to the naturally occurring immune responses to malarial antigens are not completely understood. The aim of the present investigation was to determine whether, in subjects exposed to malaria, GM and KM allotypes--genetic markers of immunoglobulin γ and κ-type light chains, respectively--contribute to the magnitude of natural antibody responses to target antigens that are leading vaccine candidates for protection against Plasmodium vivax. Methods Sera from 210 adults, who had been exposed to malaria transmission in the Brazilian Amazon endemic area, were allotyped for several GM and KM determinants by a standard hemagglutination-inhibition method. IgG subclass antibodies to P. vivax apical membrane antigen 1 (PvAMA-1) and merozoite surface protein 1 (PvMSP1-19) were determined by an enzyme-linked immunosorbent assay. Multiple linear regression models and the non-parametric Mann-Whitney test were used for data analyses. Results IgG1 antibody levels to both PvMSP1-19 and PvAMA-1 antigens were significantly higher (P = 0.004, P = 0.002, respectively) in subjects with the GM 3 23 5,13,14 phenotype than in those who lacked this phenotype. Conclusions Results presented here show that immunoglobulin GM allotypes contribute to the natural antibody responses to P. vivax malaria antigens. These findings have important implications for the effectiveness of vaccines containing PvAMA-1 or PvMSP1-19 antigens. They also shed light on the possible role of malaria as one of the evolutionary selective forces that may have contributed to the maintenance of the extensive polymorphism at the GM loci.
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Affiliation(s)
- Janardan P Pandey
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425, USA.
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Mirghani SE, Nour BYM, Bushra SM, Elhassan IM, Snow RW, Noor AM. The spatial-temporal clustering of Plasmodium falciparum infection over eleven years in Gezira State, The Sudan. Malar J 2010; 9:172. [PMID: 20565854 PMCID: PMC2903606 DOI: 10.1186/1475-2875-9-172] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Accepted: 06/18/2010] [Indexed: 12/02/2022] Open
Abstract
Background Malaria infection and disease exhibit microgeographic heterogeneity which if predictable could have implications for designing small-area intervention. Here, the space-time clustering of Plasmodium falciparum infections using data from repeat cross-sectional surveys in Gezira State, a low transmission area in northern Sudan, is investigated. Methods Data from cross-sectional surveys undertaken in January each year from 1999-2009 in 88 villages in the Gezira state were assembled. During each survey, about a 100 children between the ages two to ten years were sampled to examine the presence of P. falciparum parasites. In 2009, all the villages were mapped using global positioning systems. Cluster level data were analysed for spatial-only and space-time clustering using the Bernoulli model and the significance of clusters were tested using the Kulldorff scan statistic. Results Over the study period, 96,022 malaria slide examinations were undertaken and the P. falciparum prevalence was 8.6% in 1999 and by 2009 this had reduced to 1.6%. The cluster analysis showed the presence of one significant spatial-only cluster in each survey year and one significant space-time cluster over the whole study period. The primary spatial-only clusters in 10/11 years were either contained within or overlapped with the primary space-time cluster. Conclusion The results of the study confirm the generally low malaria transmission in the state of Gezira and the presence of spatial and space-time clusters concentrated around a specific area in the south of the state. Improved surveillance data that allows for the analysis of seasonality, age and other risk factors need to be collected to design effective small area interventions as Gezira state targets malaria elimination.
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Affiliation(s)
- Samia E Mirghani
- Malaria Public Health and Epidemiology Group, Centre for Geographic Medicine, KEMRI - University of Oxford - Wellcome Trust Collaborative Programme, Kenyatta National Hospital Grounds, Nairobi, Kenya
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Giha HA, ElGhazali G, Nasr A, Iriemenam NC, Berzins K, Troye-Blomberg M, Theander TG, Arnot D. Clustering of malaria treatment failure (TF) in Daraweesh: hints for host genetic susceptibility to TF with emphasis on immune-modulating SNPs. INFECTION GENETICS AND EVOLUTION 2010; 10:481-6. [PMID: 20215002 DOI: 10.1016/j.meegid.2010.02.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 02/19/2010] [Accepted: 02/26/2010] [Indexed: 10/19/2022]
Abstract
In malaria, drug resistance and treatment failure (TF) are not synonymous, although are escalating together. Over 9 years of surveillances for malaria morbidity and TF in Daraweesh village in eastern Sudan (1991-2004), 136 donors (15-78 years) from 43 households, treated for 278 malaria episodes and had experienced 46 incident of TF, were included in this study. Blood obtained from the donors in 2005, was used for measurement of IgG subclasses against Pf332-C231 antigen and GM/KM allotyping and for genotyping of the donors for; FcgammaRIIA 131 (HH, RH, RR), CRP 286 (C<T<A) and Hb AA/AS, polymorphisms. Results revealed that all treatment failures were experienced by 37 individual (TF-prone-individuals, TFPi), while the remaining donors were treated for 182 malaria episodes without TF (treatment responders, TR). In 7 households, all malaria patients were TFPi, while in 19 households all patients were TR. The TFPi compared with matched TR individuals (TRi), had significantly higher IgG1 levels (p=0.021), while IgG3/IgG1 ratio was significantly higher in the TRi (p=0.016). However, the frequencies of all tested polymorphisms (GM/KM, FcgammaRIIA 131, CRP 286 and Hb AA/AS), were comparable between the study groups. In conclusion, there was clustering of TF at level of individuals and households with differences in base-line immunity between the TFPi and TRi. Together, the results suggest an immune-mediated genetic susceptibility to TF, as some of the tested polymorphisms showed trends but no significant association with TF.
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Affiliation(s)
- Hayder A Giha
- Department of Medical Biochemistry, Faculty of Medicine and Medical Sciences, Arabian Gulf University, PO Box 26671, Manama, Bahrain.
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