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Bayat B, Lowack J, Audrain M, Croisille L, Curtis B, Dangerfield R, Esmaeili B, Grabowski C, Keller M, Kim H, Kroll H, Kvanka MM, Kwok J, Moritz E, Nathalang O, Nelson D, Nielsen KR, Pahn G, Poles A, Porcelijn L, Sachs UJ, Schönbacher M, Körmöczi GF, Kupatawintu P, Takahashi D, Uhrynowska M, Flesch B, Fung YL. World human neutrophil antigens investigation survey. Vox Sang 2023; 118:763-774. [PMID: 37608544 DOI: 10.1111/vox.13500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 08/24/2023]
Abstract
BACKGROUND AND OBJECTIVES Human neutrophil antigens (HNAs) are categorized into five systems: HNA-1 to HNA-5. Given the importance of neutrophils in immunity, we sought to create awareness of the role of HNA diagnostic services in managing immune neutropenia and transfusion-related acute lung injury. To provide health communities all around the world with access to these services, we conducted a survey to create a directory of these HNA diagnostic services. MATERIALS AND METHODS An Excel table-based survey was created to capture information on the laboratory's location and was emailed to 55 individuals with known or possible HNA investigation activity. The collected data were then summarized and analysed. RESULTS Of contacted laboratories, the surveys were returned from 23 (38.2%) laboratories; 17 have already established HNA diagnostic (of them 12 were regular participants of the International Granulocyte Immunobiology Workshop [ISBT-IGIW]), 4 laboratories were in the process of establishing their HNA investigation and the remaining 2 responder laboratories, did not conduct HNA investigations. In established laboratories, investigation for autoimmune neutropenia (infancies and adults) was the most frequently requested, and antibodies against HNA-1a and HNA-1b were the most commonly detected. CONCLUSION The directory of survey respondents provides a resource for health professionals wanting to access HNA diagnostic services. The present study offers a comprehensive picture of HNA diagnostics (typing and serology), identifying weak points and areas for improvement for the first time. Identifying more laboratories involved in HNA diagnostics with limited access to international societies in the field will globally improve HNA diagnostics.
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Affiliation(s)
- Behnaz Bayat
- Institute for Clinical Immunology, Transfusion Medicine and Haemostasis, Justus-Liebig-University, Gießen, Germany
| | - Jonas Lowack
- Institute for Clinical Immunology, Transfusion Medicine and Haemostasis, Justus-Liebig-University, Gießen, Germany
| | - Marie Audrain
- Service d'Immunologie, Laboratoire de Biologie, Nantes, France
| | | | - Brian Curtis
- Platelet & Neutrophil Immunology Lab, Versiti, Milwaukee, Wisconsin, USA
| | - Rebecca Dangerfield
- American Red Cross Neutrophil Immunology Laboratory, St Paul, Minnesota, USA
| | - Behnaz Esmaeili
- Department of Basic Medical Sciences, Khoy University of Medical Sciences, Khoy, Iran
- Immunology, Asthma and Allergy Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Claudia Grabowski
- Institut für Transfusionsmedizin Dessau, DRK-Blutspendedienst NSTOB, Dessau, Germany
| | - Margaret Keller
- American Red Cross Neutrophil Immunology Laboratory, St Paul, Minnesota, USA
| | - Hyungsuk Kim
- Seoul National University Hospital, Seoul, South Korea
| | - Hartmut Kroll
- Institut für Transfusionsmedizin Dessau, DRK-Blutspendedienst NSTOB, Dessau, Germany
| | | | - Janette Kwok
- Division of Transplantation and Immunogenetic, Department of Pathology, Queen Mary Hospital, Pok Fu Lam, Hong Kong
| | - Elyse Moritz
- Clinical and Experimental Oncology, Escola Paulista de Medicinia, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | - Oytip Nathalang
- Faculty of Allied Health Sciences, Thammasat University, Pathumtani, Thailand
| | - Derrick Nelson
- Specialized Laboratory Services, South African National Blood Service, Johannesburg, South Africa
| | | | - Gail Pahn
- Platelet & Granulocyte Reference Laboratory, Australian Red Cross Lifeblood, Brisbane, Australia
| | - Anthony Poles
- Department of Histocompatibility & Immunogenetics, NHS Blood & Transplant, Bristol, UK
| | - Leendert Porcelijn
- Platelet/Leucocyte Serology Laboratory, Sanquin Diagnostic Services, Amsterdam, The Netherlands
| | - Ulrich J Sachs
- Institute for Clinical Immunology, Transfusion Medicine and Haemostasis, Justus-Liebig-University, Gießen, Germany
| | - Marlies Schönbacher
- Department of Transfusion Medicine and Cell Therapy, Medical University of Vienna, Vienna, Austria
| | - Günther F Körmöczi
- Department of Transfusion Medicine and Cell Therapy, Medical University of Vienna, Vienna, Austria
| | | | | | | | - Brigitte Flesch
- Laboratory for Immunogenetics/HLA, DRK Blutspendedienst West, Bad Kreuznach, Germany
| | - Yoke-Lin Fung
- School of Health, University of the Sunshine Coast, Sunshine Coast, Queensland, Australia
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Rophina M, Bhoyar RC, Imran M, Senthivel V, Divakar MK, Mishra A, Jolly B, Sivasubbu S, Scaria V. Genetic landscape of human neutrophil antigen variants in India from population-scale genomes. HLA 2023; 101:262-269. [PMID: 36502377 DOI: 10.1111/tan.14938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 11/08/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
Antibodies against human neutrophil antigens (HNAs) play a significant role in various clinical conditions such as neonatal alloimmune neutropenia, transfusion-related acute lung injury, and other nonhemolytic transfusion reactions. This study aims to identify the genotype and allele frequencies of HNAs in the healthy Indian population. Ten genetic variants in four human genes encoding alleles of HNAs class I-V approved by the International Society of Blood Transfusion-Granulocyte Immunobiology Working Party were used in the analysis. Genetic variants from whole genome sequences of 1029 healthy Indian individuals corresponding to HNA alleles were analyzed. The frequencies of the variants were compared with global population datasets using an in-house computational pipeline. In HNA class I, allele frequencies of FCGR3B*01, FCGR3B*02, and FCGR3B*03 encoding HNA-1a, HNA-1b, and HNA-1c were 0.07, 0.8, and 0.13, respectively. HNA class 3 alleles namely SLC44A2*01 (encoding HNA-3a) and SLC44A2*02 (encoding HNA-3b) were found at allele frequencies of 0.78 and 0.22, respectively. The frequencies of ITGAM*01 encoding HNA-4a and ITGAM*02 encoding HNA-4a were 0.95 and 0.05, respectively. Furthermore, allele frequencies of HNA class 5 alleles were 0.32 for ITGAL*01 (encoding HNA-5a) and 0.68 for ITGAL*02 (encoding HNA-5b). Interestingly, it was also found that rs2230433 variant deciding the HNA class 5 alleles, was highly prevalent (78.2%) in the Indian population compared with other global populations. This study presents the first comprehensive report of HNA allele and genotype frequencies in the Indian population using population genome datasets of 1029 individuals. Significant difference was observed in the prevalence of HNA5a and HNA5b in India in comparison to other global populations.
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Affiliation(s)
- Mercy Rophina
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Rahul C Bhoyar
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Mohamed Imran
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Vigneshwar Senthivel
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Mohit Kumar Divakar
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Anushree Mishra
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Bani Jolly
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Sridhar Sivasubbu
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Vinod Scaria
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Browne T, Dearman RJ, Poles A. Human neutrophil antigens: Nature, clinical significance and detection. Int J Immunogenet 2020; 48:145-156. [PMID: 32970372 DOI: 10.1111/iji.12514] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/11/2020] [Accepted: 08/27/2020] [Indexed: 12/18/2022]
Abstract
Granulocytes are an essential part of both the innate and adaptive immune systems. Human neutrophil antigens (HNAs) are a family of epitopes that are located on glycoproteins that are mostly expressed on human granulocytes. Antibodies that recognize these epitopes have been associated with neutropenia, transfusion complications, haematopoietic stem cell transplant nonengraftment and renal transplant rejection. Currently, there are fourteen recognized HNA alleles across five antigen systems (HNA-1 through HNA-5), the molecular basis of which are located on the genes FCGR3B, CD177, SLC44A2, ITGAM and ITGAL, respectively. Elucidation of the associated genes has permitted the development of testing strategies for HNA typing and aided understanding of the associated epitopes. This review will outline the associated clinical conditions that require HNA investigation and how these are performed in specialized laboratories. Investigations provided are both reactive for patients with a variety of existing or suspected neutropenias and proactive in the testing of blood component donors in order to reduce the potential risk to patients who require transfusion.
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Affiliation(s)
- Tom Browne
- Histocompatibility and Immunogenetics Laboratory, NHS Blood and Transplant, Filton, Bristol, UK
| | - Rebecca J Dearman
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Anthony Poles
- Histocompatibility and Immunogenetics Laboratory, NHS Blood and Transplant, Filton, Bristol, UK
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Grabowski C, Jorks S, Kroll H. Genotyping of human neutrophil antigens 1, 3, 4 and 5 using a novel multiplex polymerase chain reaction. Transfus Med 2019; 29:110-115. [PMID: 30974499 DOI: 10.1111/tme.12594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 03/01/2019] [Accepted: 03/15/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Our study aimed to establish a novel multiplex polymerase chain reaction (PCR) for rapid simultaneous detection of all relevant human neutrophil antigen (HNA)-1, -3, -4 and -5 alleles. BACKGROUND Granulocyte-reactive antibodies are involved in several diseases, such as neonatal alloimmune neutropenia, autoimmune neutropenia and transfusion-related acute lung injury. A panel of well-defined test granulocytes is required for diagnostic antibody detection and prospective blood donor screening. Several genotyping methods for the detection of HNA alleles have been described, but most approaches require separate amplification of each HNA allele or at least a separate amplification of the HNA-1 alleles. METHODS The new method is based on simultaneous detection in one reaction tube, where each HNA-1 allele is amplified by two allele-specific primers, one primer of which is labelled with a fluorescent dye (HEX, FAM). Allelic polymorphisms for HNA-3, -4 and -5 were amplified with one common unlabelled primer and two fluorescence-labelled (HEX, FAM) allele-specific primers. DNA fragments of HNA alleles are analysed on a Genetic Analyser 3130xl by amplicon size and fluorescent dye. A total of 110 blood donors with known genotypes were studied. RESULTS In the 110 DNA samples studied, all HNA-1, -3, -4 and -5 alleles could be detected precisely. All results matched perfectly with those from reference typing by PCR-sequence-specific primer. Amplification performed well even at low DNA concentrations (10 ng μL-1 ). CONCLUSION Our method enables fast and easy genotyping of all relevant HNA-alleles in one PCR reaction. Results are easy to analyse due to different amplicon sizes and fluorescent dyes. Furthermore, the method is suitable for high sample throughput.
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Affiliation(s)
- C Grabowski
- Institute for Transfusion Medicine Dessau, Red Cross Blood Transfusion Service NSTOB, Dessau, Germany
| | - S Jorks
- Institute for Transfusion Medicine Dessau, Red Cross Blood Transfusion Service NSTOB, Dessau, Germany
| | - H Kroll
- Institute for Transfusion Medicine Dessau, Red Cross Blood Transfusion Service NSTOB, Dessau, Germany
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Flesch BK, Reil A. Molecular Genetics of the Human Neutrophil Antigens. Transfus Med Hemother 2018; 45:300-309. [PMID: 30498408 PMCID: PMC6257083 DOI: 10.1159/000491031] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/17/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Antibodies to human neutrophil antigens (HNAs) have been implicated in transfusion-related acute lung injury and allo- and autoimmune neutropenia. To date, five HNA systems are assigned, and during the last decades enormous efforts have been undertaken to identify the underlying genes and to characterize the antigens. This review of the literature will provide the current genetic, molecular and functional information on HNAs. RECENT FINDINGS New information on alleles and antigens has been added to nearly each of the five HNA systems. HNA-1d has been added as the antithetical epitope to HNA-1c that is located on the glycoprotein encoded by FCGR3B*02 but not by FCGR3B. FCGR3B*04 and *05 now are included as new alleles. A CD177*787A>T substitution was demonstrated as the main reason for the HNA-2-negative phenotype on neutrophils. The target glycoprotein of HNA-3 antibodies could be identified as choline transporter-like protein 2 (CTL2) encoded by SLC44A2. The conformation sensitive epitope discriminates between arginine and glutamine at position 152 resulting in HNA-3a and HNA-3b. An additional Leu151Phe substitution can impair HNA-3a antibody binding. Recently an alloantibody against HNA-4b which discriminates from HNA-4a by an Arg61His exchange of the glycoprotein encoded by the ITGAM gene was reported in neonatal alloimmune neutropenia. An update of the current HNA nomenclature based on the new findings was provided in 2016 by the ISBT Granulocyte Immunobiology Working Party nomenclature subcommittee. CONCLUSIONS The molecular basis of each of the five HNA antigen systems has been decoded during the past decades. This enables reliable molecular typing strategies, antibody detection and specification as well as development of new assays based on recombinant antigens. However, research on HNA alleles, antigens, and antibodies is not finally terminated and also in the future will add new findings.
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6
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Porcelijn L, de Haas M. Neonatal Alloimmune Neutropenia. Transfus Med Hemother 2018; 45:311-316. [PMID: 31049048 DOI: 10.1159/000492949] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 08/16/2018] [Indexed: 12/17/2022] Open
Abstract
Neonatal alloimmune neutropenia (NAIN, NAIN or NIN) is a neutrophil blood group antagonism, analogous to hemolytic disease of the fetus and newborn (HDFN) and fetal/neonatal alloimmune thrombocytopenia (FNAIT). A limited number of prospective screening studies showed that granulocyte-specific antibodies were detectable in 0.35-1.1% of random postnatal maternal samples and that the incidence of NAIN was below 0.1%. Symptoms vary from none to mild skin infections, omphalitis or more severe infections like pneumonia, sepsis, and meningitis. Treatment of neonatal infection with antibiotics and granulocyte-colony stimulating factor is advised.
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Affiliation(s)
- Leendert Porcelijn
- Immunohematology Diagnostic Services, Sanquin Diagnostic Services, Amsterdam, the Netherlands
| | - Masja de Haas
- Immunohematology Diagnostic Services, Sanquin Diagnostic Services, Amsterdam, the Netherlands.,Department of Immuno-Hematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands.,Center for Clinical Transfusion Research, Sanquin Research, Leiden, the Netherlands
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7
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Tam K, Tang I, Ho J, Yeung W, Lee CK, Ip P, Kwok J. A study of human neutrophil antigen genotype frequencies in Hong Kong. Transfus Med 2017; 28:310-318. [PMID: 29280200 DOI: 10.1111/tme.12494] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 07/07/2017] [Accepted: 11/19/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Alloantibodies against human neutrophil antigens (HNA) are associated with a variety of clinical conditions. Over the past decade, the allelic and genotypic frequencies of the five HNA systems have been evaluated. Although the HNA system is less polymorphic than human leukocyte antigens (HLA), significant differences in the genotypic and allele frequencies still exist in different populations, even those living in close proximity. OBJECTIVES To delineate HNA genotypic and allele frequencies to provide vital information on estimating the risk of HNA-associated diseases for our local population. METHODS Using a validated, in-house-developed assay, genotyping for HNA-1, HNA-3, HLA-4 and HNA-5 was performed on 300 samples from Chinese blood donors from Hong Kong. In addition, the frequency of the HNA-2 c.843A > T allele was also determined. RESULTS The allele frequencies of HNA-1a, -1b and -1c alleles were 67·8, 31·5 and 0%, respectively, whereas the frequencies of HNA-3a and HNA-3b were 71·0 and 29·0%, respectively. The frequencies of HNA-4a and -4b alleles were 99·5 and 0·5%, respectively, and for HNA-5a and -5b, alleles were 85·2 and 14·8%, respectively. Homozygotes for the HNA-2 c.843 TT variant were absent in our population, whereas only <4% of the population were c.843AT heterozygote carriers. CONCLUSIONS This is the first study to define HNA genotype and allele frequencies using a validated modified in-house PCR-SSP method in the Hong Kong Chinese blood donor population. Our approach provides a cost-effective assay for conducting routine HNA typing and facilitates the incorporation of these assays into routine clinical service. Our results are comparable with those reported in the Guangzhou Chinese population, but the allele frequencies in our Hong Kong Chinese population are significantly different from the reported European frequencies, confirming that a geographical difference exists for HNA allele frequencies.
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Affiliation(s)
- K Tam
- Division of Transplantation and Immunogenetics, Department of Pathology, Queen Mary Hospital, Hong Kong SAR, China
| | - I Tang
- Division of Transplantation and Immunogenetics, Department of Pathology, Queen Mary Hospital, Hong Kong SAR, China
| | - J Ho
- Division of Transplantation and Immunogenetics, Department of Pathology, Queen Mary Hospital, Hong Kong SAR, China
| | - W Yeung
- Division of Transplantation and Immunogenetics, Department of Pathology, Queen Mary Hospital, Hong Kong SAR, China
| | - C K Lee
- Hong Kong Red Cross Blood Transfusion Service, Kowloon, Hong Kong SAR, China
| | - P Ip
- Department of Paediatrics & Adolescent Medicine, University of Hong Kong, Hong Kong SAR, China
| | - J Kwok
- Division of Transplantation and Immunogenetics, Department of Pathology, Queen Mary Hospital, Hong Kong SAR, China
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8
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Mraz G, Crighton G, Christie D. Antibodies to human neutrophil antigen HNA-4b implicated in a case of neonatal alloimmune neutropenia. Transfusion 2016; 56:1161-5. [PMID: 26749553 DOI: 10.1111/trf.13463] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 11/12/2015] [Accepted: 11/19/2015] [Indexed: 12/01/2022]
Affiliation(s)
- G.A. Mraz
- Victorian Transplantation & Immunogenetics Service, Australian Red Cross Blood Service; West Melbourne Victoria Australia
| | - G.L. Crighton
- Victorian Transplantation & Immunogenetics Service, Australian Red Cross Blood Service; West Melbourne Victoria Australia
- Royal Children's Hospital; Parkville Victoria Australia
- Department of Epidemiology and Preventive Medicine; Monash University; Melbourne Victoria Australia
| | - D.J. Christie
- Albury-Wodonga Health; Albury New South Wales Australia
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Khantisitthiporn O, Kaset C, Intharanut K, Leetrakool N, Nathalang O. Frequencies of human neutrophil antigen-4 and human neutrophil antigen-5 among Thai blood donors. Asian J Transfus Sci 2015; 9:133-7. [PMID: 26420930 PMCID: PMC4562131 DOI: 10.4103/0973-6247.162699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Context: Antibodies against human neutrophil antigens (HNAs) are implicated in immune-mediated neutropenia, transfusion-related acute lung injury and febrile transfusion reactions. Aims: This study aimed to determine HNA gene frequencies of the HNA-4 and HNA-5 systems among Thai populations and compare these frequencies with those previously reported for other populations. Materials and Methods: 800 DNA samples obtained from 500 unrelated healthy blood donors from Bangkok and 300 samples from Chiang Mai, Thailand were included. Samples were typed for each HNA allele including HNA-4a, HNA-4b, HNA-5a, and HNA-5b using an in-house polymerase chain reaction with sequence-specific primer technique. Results: The frequencies of HNA-4a and HNA-4b alleles in central Thais were 0.975 and 0.025, respectively and for Northern Thais, their frequencies were 0.965 and 0.035, respectively. For HNA-5a and HNA-5b alleles, their frequencies were 0.771 and 0.229; 0.748, and 0.252 in central and Northern Thais, respectively. The frequencies of HNA-4 and HNA-5 systems in central Thais are closely related to those in Northern Thais (P > 0.05). However, their frequencies were different from other populations (P < 0.001), except HNA-5a and HNA-5b gene frequencies in Thais were similar to Caucasians (P > 0.05). Conclusion: This study could contribute to predict the risk of alloimmunization to HNA-4 and HNA-5 systems, especially in feto-maternal incompatibility in Thais.
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Affiliation(s)
- Onruedee Khantisitthiporn
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
| | - Chollanot Kaset
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
| | - Kamphon Intharanut
- Department of Graduate Program, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
| | - Nipapan Leetrakool
- Department of Blood Bank Section, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Oytip Nathalang
- Department of Graduate Program, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
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Curtis BR, Roman AS, Sullivan MJ, Raven CS, Larison J, Weitekamp LA. Two cases of maternal alloimmunization against human neutrophil alloantigen-4b, one causing severe alloimmune neonatal neutropenia. Transfusion 2015; 56:101-6. [DOI: 10.1111/trf.13287] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 07/02/2015] [Accepted: 07/07/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Brian R. Curtis
- Platelet & Neutrophil Immunology Laboratory; BloodCenter of Wisconsin; Milwaukee Wisconsin
- Blood Research Institute; BloodCenter of Wisconsin; Milwaukee Wisconsin
| | | | - Mia J. Sullivan
- Platelet & Neutrophil Immunology Laboratory; BloodCenter of Wisconsin; Milwaukee Wisconsin
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Human neutrophil antigen profiles in Banjar, Bugis, Champa, Jawa and Kelantan Malays in Peninsular Malaysia. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2015; 13:610-5. [PMID: 26057487 DOI: 10.2450/2015.0278-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 02/09/2015] [Indexed: 11/21/2022]
Abstract
BACKGROUND Human neutrophil antigens (HNA) are polymorphic and immunogenic proteins involved in the pathogenesis of neonatal alloimmune neutropenia, transfusion-related acute lung injury (TRALI) and transfusion-related alloimmune neutropenia. The characterisation of HNA at a population level is important for predicting the risk of alloimmunisation associated with blood transfusion and gestation and for anthropological studies. MATERIALS AND METHODS Blood samples from 192 healthy, unrelated Malays were collected and genotyped using polymerase chain reaction-sequence specific primers (HNA-1, -3, -4) and polymerase chain reaction-restriction fragment length polymorphisms (HNA-5). The group comprised 30 Banjar, 37 Bugis, 51 Champa, 39 Jawa and 35 Kelantan Malays. RESULTS The most common HNA alleles in the Malays studied were HNA-1a (0.641-0.765), -3a (0.676-0.867), -4a (0.943-1.000) and -5a (0.529-0.910). According to principal coordinate plots constructed using HNA allele frequencies, the Malay sub-ethnic groups are closely related and grouped together with other Asian populations. The risks of TRALI or neonatal neutropenia were not increased for subjects with HNA-1, -3 and -4 loci even for donor and recipient or pairs from different Malay sub-ethnic groups. Nonetheless, our estimates showed significantly higher risks of HNA alloimmunisation during pregnancy and transfusion between Malays and other genetically differentiated populations such as Africans and Europeans. DISCUSSION This study reports HNA allele and genotype frequencies for the five Malay sub-ethnic groups living in Peninsular Malaysia for the first time. These Malay sub-ethnic groups show closer genetic relationships with other Asian populations than with Europeans and Africans. The distributions of HNA alleles in other lineages of people living in Malaysia (e.g. Chinese, Indian and Orang Asli) would be an interesting subject for future study.
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Human neutrophil alloantigen genotype frequencies in Thai blood donors. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2013; 12 Suppl 1:s286-91. [PMID: 23399362 DOI: 10.2450/2013.0161-12] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Accepted: 11/12/2012] [Indexed: 12/25/2022]
Abstract
BACKGROUND Antibodies to human neutrophil antigens (HNA) can cause transfusion reactions, as well as autoimmune and neonatal neutropenia. This study is the first to report the frequencies of human neutrophil antigen genotypes in the Thai population. MATERIALS AND METHODS Three hundred unrelated, healthy Thai blood donors at the National Blood Centre, Thai Red Cross Society, Bangkok, Thailand were typed for HNA-1a, -1b, -1c, -3a, -3b and -4a using polymerase chain reaction with sequence-specific primers. Moreover, HNA-5a genotyping was performed using polymerase chain reaction-restriction fragment length polymorphism. RESULTS The gene frequencies of HNA-1a, -1b and -1c were 0.470, 0.530 and 0.005, respectively. The frequencies of HNA-3a and -3b were 0.490 and 0.510, respectively. Additionally, the HNA-4a+/+ and HNA-4a+/- genotype frequencies were 0.947 and 0.053, respectively. The frequencies of HNA-5a+/+, HNA-5a+/- and HNA-5a-/- genotypes were 0.641, 0.297 and 0.062, respectively. Compared with other Asian populations, Thais have higher frequencies of HNA-1b (P<0.001). On the other hand, the frequency of HNA-5a observed in Thais is lower than that reported among Koreans (P<0.001). DISCUSSION These findings suggest that Thais would be more susceptible to HNA-1b alloimmunisation. Furthermore, our results could establish a useful human neutrophil antigen donor file to provide more effective transfusion of blood and blood components.
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Matsuhashi M, Tsuno NH, Kawabata M, Mishima Y, Okochi N, Santoso S, Tozuka M, Takahashi K. The frequencies of human neutrophil alloantigens among the Japanese population. ACTA ACUST UNITED AC 2012; 80:336-40. [PMID: 22776008 DOI: 10.1111/j.1399-0039.2012.01930.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 06/14/2012] [Accepted: 06/21/2012] [Indexed: 12/22/2022]
Abstract
Human neutrophil antigens (HNAs) play an important role in a variety of clinical conditions including immune-mediated neutropenia, non-hemolytic transfusion reactions, and transfusion-related acute lung injury. The aim of this study was to investigate the frequency distribution of HNAs-1 to -5 among the Japanese population. We analyzed samples from 570 healthy Japanese by molecular and serologic techniques to estimate the gene frequencies of HNAs-1 to -5. DNA samples were obtained and typed for the HNA-1 (n = 523), -3 (n = 570), -4 (n = 570), and -5 (n = 508), by molecular techniques. The HNA-1 genotype was determined by using a commercial polymerase chain reaction-reverse sequence-specific oligonucleotide probes (PCR-rSSOP) kit. The HNA-3 to -5 genotypes were determined by the PCR-sequence specific primer (PCR-SSP), previously described, with a small modification. The HNA-2a phenotype was determined in 301 donors by granulocyte immunofluorescence test. In Japanese, the gene frequencies of HNA-1a, -1b, and -1c were 0.623, 0.377, and 0.000, respectively. The frequency of HNA-2a phenotype was 0.987, and the gene frequencies of HNA-3a and -3b were 0.654 and 0.346, respectively. HNA-4a and -4b were found at 1.000 and 0.000, respectively, and HNA-5a and -5b at 0.840 and 0.160, respectively. We describe, for the first time, the frequencies of all HNAs (HNA-1 to -5) among the Japanese population. This study will be helpful for the prediction of the risk of alloimmunization to HNA, especially to determine the risk of HNA alloantibody production by transfusion of HNA incompatible blood and feto-maternal incompatibility.
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Affiliation(s)
- M Matsuhashi
- Department of Transfusion Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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14
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Developments in the definition and clinical impact of human neutrophil antigens. Curr Opin Hematol 2011; 18:452-60. [DOI: 10.1097/moh.0b013e32834babdd] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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15
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Lopez GH, Dean MM, Yasui K, Schuller RM, Hirayama F, Fung YL. A standardized immunofluorescence test method with human neutrophil antigen-expressing cell lines to enhance antibody detection. Vox Sang 2011; 102:171-4. [PMID: 21883271 DOI: 10.1111/j.1423-0410.2011.01532.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There is an international need for a large-scale human neutrophils antigen (HNA) antibody screening platform to minimize the risk of antibody-mediated transfusion-related acute lung injury. However, sourcing a substantial, reliable source of HNA, as well as the scarcity of well-characterized HNA antisera for validating new screening platforms, remain as major obstacles. This short communication presents an improved protocol for the effective use of HNA-expressing KY cells as a screening platform using eight well-characterized HNA antisera of a single defined specificity.
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Affiliation(s)
- G H Lopez
- Australian Red Cross Blood Service, Brisbane, Qld, Australia
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16
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Marturana F, Timmins NE, Nielsen LK. Short-term exposure of umbilical cord blood CD34+ cells to granulocyte–macrophage colony-stimulating factor early in culture improves ex vivo expansion of neutrophils. Cytotherapy 2011; 13:366-77. [DOI: 10.3109/14653249.2010.518610] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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17
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Fromont P, Prié N, Simon P, Cesbron-Gautier A, Quelvennec E, Bignon JD, Muller JY, Audrain M. Granulocyte antibody screening: evaluation of a bead-based assay in comparison with classical methods. Transfusion 2011; 50:2643-8. [PMID: 20576014 DOI: 10.1111/j.1537-2995.2010.02762.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Granulocyte antibodies have been implicated in allo- and autoimmune neutropenia and in transfusion reactions. STUDY DESIGN AND METHODS Fifty-one sera from suspected alloimmune neutropenia or transfusion-related acute lung injury (TRALI) and 40 sera from suspected autoimmune neutropenia were tested for granulocyte antibodies using LABScreen MULTI (One Lambda, Inc.), compared with classical tests (flow cytometry [FC] and granulocyte agglutination [GAT] followed by monoclonal antibody-specific immobilization of granulocyte antigens [MAIGA]). RESULTS In alloimmune situations, 48 sera were concordant (94%), two sera positive for HNA with LABScreen MULTI were negative by FC/GAT and/or MAIGA, and one serum sample negative for HNA with LABScreen MULTI was positive by classical tests. In autoimmune neutropenia, 30 sera were concordant (75%), four sera positive for HNA with LABScreen MULTI were negative by FC/GAT and/or MAIGA, and six sera negative for HNA with LABScreen MULTI were positive by FC/GAT and/or MAIGA. For detection of autoantibodies, the LABScreen MULTI was less concordant. However, with the exception of one case, the discrepancies were observed in sera that did not show a clear specificity. CONCLUSIONS LABScreen MULTI correlated well with our classical methods for HNA-1 and HNA-2a antibody screening. It can be used for screening blood donors or patients suspected of TRALI, but GAT is still needed for HNA-3a antibody screening.
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Xia W, Bayat B, Sachs U, Chen Y, Shao Y, Xu X, Deng J, Ding H, Fu Y, Ye X, Santoso S. The frequencies of human neutrophil alloantigens in the Chinese Han population of Guangzhou. Transfusion 2010; 51:1271-7. [PMID: 21166683 DOI: 10.1111/j.1537-2995.2010.02979.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Antibodies against polymorphic structures on human neutrophil antigens (HNAs) play a role in alloimmune-mediated neutropenia and are the leading cause of antibody-mediated transfusion-related acute lung injury (TRALI). This study aimed to determine the frequencies of HNAs in the major Han ethnic group living in Guangdong Province, Southern China. STUDY DESIGN AND METHODS A total of 493 healthy Chinese Han blood donors from Guangzhou were recruited. DNA samples were isolated and typed for all five HNA-1, -2, -3, -4, and -5 systems using allele-specific polymerase chain reaction approaches. Results were compared with available data from other Chinese cohorts and other Asian and Caucasian populations. RESULTS In this cohort, the gene frequency for HNA-1a (0.667) was approximately twice that of HNA-1b (0.333). In contrast to Caucasian populations, HNA-1a represents the most frequent allele in the Chinese population. HNA-3 system genotyping revealed comparable frequencies for HNA-3a (0.738) and -3b (0.262) in Chinese and Caucasian populations. Homozygous HNA-3 bb individuals were found in 5.64% of our cohort. HNA-4 genotyping revealed no HNA-4 bb homozygous individuals. In contrast, HNA-5 bb homozygous individuals represented 2.43% of the population. Typing the HNA-2 system for the single-nucleotide polymorphism C42G showed that the C-allele (69%) is overrepresented and is associated with an increased number of HNA-2a-positive neutrophil subpopulations. CONCLUSION This study describes for the first time the frequencies of all HNA systems, including the newly identified HNA-3, within one cohort of Chinese Han population. Comparison with Caucasian populations may allow assessment of anti-HNA alloimmunization and estimation of alloimmune neutropenia and TRALI incidence in Chinese populations.
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Affiliation(s)
- Wenjie Xia
- Institute of Blood Transfusion, Guangzhou Blood Center, Guangzhou, Guangdong, China
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Moritz E, Norcia ÂMMI, Cardone JDB, Kuwano ST, Chiba AK, Yamamoto M, Bordin JO. Human neutrophil alloantigens systems. AN ACAD BRAS CIENC 2009; 81:559-69. [DOI: 10.1590/s0001-37652009000300019] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2008] [Accepted: 04/27/2009] [Indexed: 11/21/2022] Open
Abstract
Neutrophil alloantigens are involved in a variety of clinical conditions including immune neutropenias, transfusion-related acute lung injury (TRALI), refractoriness to granulocyte transfusions and febrile transfusion reactions. In the last decade, considerable progress has been made in the characterization of the implicated antigens. Currently, seven antigens are assigned to five human neutrophil antigen (HNA) systems. The HNA-1a, HNA-1b and HNA-1c antigens have been identified as polymorphic forms of the neutrophil Fcγ receptor IIIb (CD16b), encoded by three alleles. Recently, the primary structure of the HNA-2a antigen was elucidated and the HNA-2a-bearing glycoprotein was identified as a member of the Ly-6/uPAR superfamily, which has been clustered as CD177. The HNA-3a antigen is located on a 70-95 kDa glycoprotein; however, its molecular basis is still unknown. Finally, the HNA-4a and HNA-5a antigens were found to be caused by single nucleotide mutations in the αM (CD11b) and αL (CD11a) subunits of the leucocyte adhesion molecules (β2 integrins). Molecular and biochemical characterization of neutrophil antigenshave expanded our diagnostic tools by the introduction of genotyping techniques and immunoassays for antibody identification. Further studies in the field of neutrophil immunology will facilitate the prevention and management of transfusion reactions and immune diseases caused by neutrophil antibodies.
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20
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Timmins NE, Palfreyman E, Marturana F, Dietmair S, Luikenga S, Lopez G, Fung YL, Minchinton R, Nielsen LK. Clinical scale ex vivo manufacture of neutrophils from hematopoietic progenitor cells. Biotechnol Bioeng 2009; 104:832-40. [DOI: 10.1002/bit.22433] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Lane SW, Hassell P, Kennedy GA, Fung YL, Williams BA. Characterization of the bone marrow immunofluorescence test in childhood autoimmune neutropenia. Int J Lab Hematol 2008; 31:567-71. [PMID: 18637806 DOI: 10.1111/j.1751-553x.2008.01084.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The bone marrow immunofluorescenece test (BMIFT) demonstrates autoantibodies to granulocytes and their precursors on fresh-frozen bone marrow slides. It may be used to differentiate childhood autoimmune neutropenia (AIN) from other causes of childhood neutropenia, even when circulating neutrophil counts are low. We sought to characterize the diagnostic utility of the BMIFT in childhood AIN. All BMIFT requests for investigation of children with neutropenia between January 1998 and May 2007 were reviewed. Patients were classified as AIN or nonautoimmune causes. Baseline demographic data, results of BMIFT, granulocyte immunofluorescence testing and bone marrow findings were collected from clinical records and the institutional laboratory database. Seventy-six children had BMIFT performed for investigation of neutropenia. There were 45 patients diagnosed with AIN, 28 with nonimmune neutropenia and three failed tests. The median age of children with AIN was 1.2 years (range 0.3-15.3), compared with 3.6 years (range 0.1-15.7) in the nonautoimmune group. The median neutrophil count in AIN was 0.3 x 10(9)/l (0.9 x 10(9)/l in nonautoimmune). BMIFT was positive in 24 of 45 patients with AIN and 0 of 28 with nonautoimmune neutropenia (sensitivity 53%, specificity 100%, positive predictive value (PPV) 100%, negative predictive value 57%). Ten patients had other autoimmune diatheses at diagnosis. The BMIFT is a simple, highly specific test with excellent PPV and thus is a clinically useful test to confirm AIN in children.
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Affiliation(s)
- S W Lane
- Department of Haematology, Pathology Queensland, Royal Brisbane and Women's Hospitals, Herston Rd, Brisbane, Qld 4029, Australia.
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22
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Abstract
OBJECTIVE This review describes alloantigens currently listed in the human neutrophil alloantigen (HNA) system. MATERIAL AND METHODS Review of the literature. RESULTS Neutrophil antigens are implicated in a variety of clinical conditions including neonatal immune neutropenia, transfusion-related acute lung injury, refractoriness to granulocyte transfusions, febrile transfusion reactions, immune neutropenia after bone marrow transplantation, autoimmune neutropenia and drug-induced immune neutropenia. Seven antigens have been listed in the HNA system that are assigned to five antigen groups. Six antigens have been characterized biochemically and molecularly so that their primary structure is now known. As shown by regularly performed international granulocyte immunology workshops, a combination of granulocyte agglutination and immunofluorescence tests together with a panel of typed cells is currently the best means of detection. CONCLUSIONS Most of the HNA antigens have been well-characterized so that HNA typing as well as the detection of the corresponding antibodies are now reliably possible. This will improve diagnostics of neutrophil antibody-mediated clinical conditions as well as the prevention of transfusion-related acute lung injury.
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Affiliation(s)
- J Bux
- Blood Service West of the German Red Cross, Feithstrasse 182, 58097 Hagen, Germany.
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Cardone JDB, Bordin JO, Chiba AK, Norcia AMMI, Vieira-Filho JPB. Gene frequencies of the HNA-4a and -5a neutrophil antigens in Brazilian persons and a new polymerase chain reaction-restriction fragment length polymorphism method for HNA-5a genotyping. Transfusion 2006; 46:1515-20. [PMID: 16965578 DOI: 10.1111/j.1537-2995.2006.00943.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The HNA-4a (Mart) and HNA-5a (Ond) antigens are polymorphic variants of alpha(M) (CD11b) and alpha(L) (CD11a) subunits of the beta(2)-integrin, and are associated with single nucleotide polymorphisms (SNP) leading to amino acid dimorphisms. HNA-4a has been linked to alloimmune neonatal neutropenia, but the HNA-5a clinical significance is unclear. STUDY DESIGN AND METHODS Using a polymerase chain reaction (PCR) with sequence-specific primers, the frequency of HNA-4a among 121 Brazilian blood donors and 114 Amazon Indians was determined. A PCR-restriction fragment length polymorphism (RFLP) method for HNA-5a genotyping was developed, and the gene frequencies of this antigen were determined among 123 blood donors and 114 Indians. To validate the genotyping method, the amplified DNA from six previously obtained samples (two of each genotype) was sequenced. RESULTS The HNA-4a (+/+), HNA-4a (+/-), and HNA-4a (-/-) genotype frequencies of blood donors (0.686, 0.273, 0.041) and Indians (1.000, 0.000, 0.000) were different (p < 0.01). The frequencies of HNA-5a (+/+), HNA-5a (+/-), and HNA-5a (-/-) genotypes among blood donors (0.512, 0.399, 0.089) and Indians (0.746, 0.219, 0.035) also differed (p < 0.01). Sequencing demonstrated concordance with PCR-RFLP genotyping in all six evaluated samples. CONCLUSION Comparing to another populations, Brazilians present a higher frequency of HNA-4a-negative allele, suggesting that Brazilians would be more susceptible to HNA-4a alloimmunization. Moreover, the distribution of the HNA-4 alleles observed in Amazon Indians is quite similar to that reported among Koreans. Besides that, a new effective and efficient HNA-5a genotyping technique is now available for population studies.
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Han TH, Han KS. Gene Frequencies of Human Neutrophil Antigens 4a and 5a in the Korean Population. Ann Lab Med 2006; 26:114-8. [DOI: 10.3343/kjlm.2006.26.2.114] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Tae Hee Han
- Department of Laboratory Medicine, Inje University Sanggyep Paik Hospital, Seoul, Korea
| | - Kyou Sup Han
- Department of Laboratory Medicine, College of Medicine, Seoul National University, Seoul, Korea
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Abstract
The incidence of alloimmune neonatal neutropenia (ANN) is poorly defined. The reported incidence is less than or equal to 0.1%. This prospective study of unselected pregnancies found an incidence of 0.81% based on results of screening 247 'full term' cord blood samples. Alloimmune neonatal neutropenia occurred more frequently in this population than expected from published historical data. Advances in techniques for antineutrophil antibody screening may have contributed to the higher incidence found in this study. The frequency of ANN supports increased surveillance and confirmatory serological testing in infants with unexplained neutropenia.
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Affiliation(s)
- Bronwyn A Williams
- Haematology Department, Queensland Health Pathalogy Service, Royal Brisbane Hospital, Brisbane, Queensland, Australia.
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27
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Abstract
Antibodies to human neutrophil alloantigens (HNA) can cause immune-mediated neutropenias and transfusion complications. The diagnosis of antibodies to the HNA-5a (Ond) isoform of the alphaLbeta2 integrin is hampered by the lack of reliable methods for HNA-5a antigen typing. We have devised a polymerase chain reaction sequence-specific primer method (PCR-SSP) and used it to determine the HNA-5a gene frequencies in 320 individuals from different ethnicities. 15.3% were found to be HNA-5a negative, with no significant deviation between the populations. Results of HNA-5a genotyping were in accordance with phenotyping. Availability of HNA-5a PCR-SSP will facilitate the diagnosis of Ond antibody-mediated clinical conditions.
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Affiliation(s)
- U J H Sachs
- Institute for Clinical Immunology and Transfusion Medicine, Justus Liebig University, Giessen, Germany.
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28
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Affiliation(s)
- D Stroncek
- Department of Transfusion Medicine, Warren G. Magnuson Clinical Center, Maryland, USA.
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Sachs UJH, Chavakis T, Fung L, Lohrenz A, Bux J, Reil A, Ruf A, Santoso S. Human alloantibody anti-Mart interferes with Mac-1-dependent leukocyte adhesion. Blood 2004; 104:727-34. [PMID: 15073035 DOI: 10.1182/blood-2003-11-3809] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The CD11b/CD18 integrin plays a crucial role in cell-cell adhesion processes. Recently, we described a case of severe neonatal alloimmune neutropenia (NAIN) caused by an alloantibody against a variant of the CD11b subunit (Mart alloantigen). Allele-specific transfected cells allowed us to demonstrate that an H61R point mutation is directly responsible for the formation of Mart epitopes. No difference in the adhesion capability between H61 and R61 homozygous neutrophils was observed. Functional analysis showed that anti-Mart inhibited Mac-1-dependent adhesion of neutrophils and monocytic U937 cells to fibrinogen, intercellular adhesion molecule-1 (ICAM-1), receptor for advanced glycation end product (RAGE), and glycoprotein Ibalpha but not to junctional adhesion molecule-C or urokinase plasminogen activator receptor (uPAR). Accordingly, anti-Mart blocked neutrophil and U937 cell adhesion to endothelial cells and platelet-leukocyte aggregate formation in whole blood under high shear. Other sera of anti-Mart from mothers of infants without NAIN did not show inhibitory properties. We conclude that anti-Mart antibodies with different functional properties exist. This is supported by our findings that anti-Mart antibodies have different abilities to inhibit cell-cell adhesion, to enhance the respiratory burst of neutrophils, and to recognize different epitopes at the N-terminal region of CD11b. In conclusion, some anti-Mart alloantibodies interfere with Mac-1-dependent cellular functions of neutrophils, cause NAIN, and may be used as tools for studying Mac-1-dependent functions.
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Affiliation(s)
- Ulrich J H Sachs
- Institute for Clinical Immunology and Transfusion Medicine, Justus Liebig University, Giessen, Germany
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Clague HD, Fung YL, Minchinton RM. Human neutrophil antigen-4a gene frequencies in an Australian population, determined by a new polymerase chain reaction method using sequence-specific primers. Transfus Med 2003; 13:149-52. [PMID: 12791082 DOI: 10.1046/j.1365-3148.2003.00435.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Human neutrophil antigen-4a (HNA-4a) is a high-frequency (99% in the USA) neutrophil antigen, which has recently been linked to a case of alloimmune neonatal neutropenia. We have devised a new polymerase chain reaction sequence-specific primer (PCR-SSP) method to assess HNA-4a genotype, and used it to determine the HNA-4a gene frequencies in an Australian population. The gene frequency was found to be 0.906, which is the same as in the American population. The PCR-SSP genotyping method perfectly correlates with serological phenotyping and is efficient for screening large numbers of samples.
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Affiliation(s)
- H D Clague
- Queensland Institute of Medical Research, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
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