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Kaito S, Suzuki Y, Masuno A, Isa K, Toyoda C, Onodera T, Ogasawara K, Uchikawa M, Tsuno NH, Satake M. Frequencies of glycophorin variants and alloantibodies against Hil and MINY antigens in Japanese. Vox Sang 2021; 117:94-98. [PMID: 34227688 DOI: 10.1111/vox.13121] [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: 03/01/2021] [Revised: 04/08/2021] [Accepted: 04/11/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVES Antigens of the MNS blood group system are expressed on the red blood cell (RBC) membrane on glycophorin A (GPA) and glycophorin B (GPB) or on hybrid molecules of GPA and GPB. This study investigated the distribution of glycophorin variants and alloantibodies against Hil and MINY among Japanese individuals. METHODS Mi(a+) or Hil+ RBCs were screened using an automated blood grouping machine (PK7300) with monoclonal anti-Mia or polyclonal anti-Hil. Glycophorin variants were defined by serology with monoclonal antibodies against Mia , Vw, MUT and Mur, and polyclonal antibodies against Hil, MINY and Hop + Nob (KIPP). The glycophorin variants were further confirmed by immunoblotting and Sanger sequencing. Alloanti-Hil and alloanti-MINY in the plasma were screened using GP.Hil RBCs in an antiglobulin test. The specificity of anti-Hil or anti-MINY was assessed using GP.Hil (Hil+MINY+) and GP.JL (Hil-MINY+) RBCs. RESULTS The GP.HF, GP.Mur, GP.Hut, GP.Vw, GP.Kip and GP.Bun frequencies in 1 005 594 individuals were 0·0357%, 0·0256%, 0·0181%, 0·0017%, 0·0009% and 0·0007%, respectively. GP.Hil was found in as four of the 13 546 individuals (0·0295%). Of 137 370 donors, 10 had anti-Hil (0·0073%) and three had anti-MINY (0·0022%). CONCLUSIONS Glycophorin variants were relatively rare in Japanese individuals, with the major variants being GP.HF (0·0357%), GP.Hil (0·0295%) and GP.Mur (0·0256%). Only one example of anti-MINY was previously reported, but we found three more in this study.
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Affiliation(s)
- Sayaka Kaito
- Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan
| | - Yumi Suzuki
- Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan
| | - Atsuko Masuno
- Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan
| | - Kazumi Isa
- Japanese Red Cross Central Blood Institute, Tokyo, Japan
| | - Chizu Toyoda
- Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan
| | - Takayuki Onodera
- Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan
| | | | - Makoto Uchikawa
- Japanese Red Cross Kanto-Koshinetsu Block Blood Center, Tokyo, Japan
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Wei L, Sun A, Wen J, Wang Z, Li Q, Liao Y, Luo G, Ji Y. Molecular genetic analysis of Mi a -positive hybrid glycophorins revealed two novel alleles of GP.Vw and multiple variant transcripts of GYPB existing in both the homozygous GP.Mur and wild-type GPB individuals. Transfusion 2021; 61:2477-2486. [PMID: 34117642 DOI: 10.1111/trf.16450] [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: 10/18/2020] [Revised: 03/16/2021] [Accepted: 04/28/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND The hybrid glycophorins of MNS blood group system express a series of low incidence antigens including Mia , which are commonly found in Southeast Asian populations. In this study, the molecular basis of Mia -positive hybrid glycophorins was firstly clarified in the Chinese Southern Han population. RNA transcripts of GYPB gene in the homozygous GP.Mur individuals were also analyzed. STUDY DESIGN AND METHODS DNAs were extracted from the whole blood samples of 111 Mia -positive donors. Then, high-resolution melting (HRM) analysis for GYP(B-A-B) was used to analyze the genotypes. Sequencing of GYPB pseudoexon 3 was conducted in the samples with variant melting curves. TA-cloning and subsequent sequencing of GYPA exons 2-4 were performed in the Mia -positive samples with normal GYPB/GYPB genotype by HRM. The transcript analysis of GYPB was conducted in homozygous GP.Mur and wild-type glycophorin B (GPB) individuals using RNA extracted from the cultured erythroblast. RESULTS The heterozygous GYP*Mur/GYPB (n = 101), homozygous GYP*Mur/GYP*Mur (n = 7) including one novel GYP*Mur allele with an extra GYPA/GYPE specific nucleotide substitution (c.229+110A>T), heterozygous GYP*Bun/GYPB (n = 1) and GYP*Vw/GYPA (n = 2) with two novel GYP*Vw alleles were identified. RNA transcript analysis revealed multiple transcripts of GYPB existing in both homozygous GP.Mur and normal GPB individuals. CONCLUSION The results showed the genetic diversity of hybrid glycophorins in the Chinese population. Besides, the successful analysis of GYPB transcripts indicates that the cultured erythroblast is a good source for RNA transcript analysis for the protein only expressed on the red blood cells.
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Affiliation(s)
- Ling Wei
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, People's Republic of China
| | - Ainong Sun
- Department of Laboratory Medicine, Zhongshan Blood Center, Zhongshan, People's Republic of China
| | - Jizhi Wen
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, People's Republic of China
| | - Zhen Wang
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, People's Republic of China
| | - Qiao Li
- Department of Laboratory Medicine, Zhongshan Blood Center, Zhongshan, People's Republic of China
| | - Yanting Liao
- Department of Laboratory Medicine, Zhongshan Blood Center, Zhongshan, People's Republic of China
| | - Guangping Luo
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, People's Republic of China
| | - Yanli Ji
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, People's Republic of China
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Universal Detection of Mi a Antigen and Frequencies of Glycophorin Hybrids among Blood Donors in Taiwan by Human Monoclonal Antibodies against Mi a (MNS7), Mur (MNS10), and MUT (MNS35) Antigens. Diagnostics (Basel) 2021; 11:diagnostics11050806. [PMID: 33946749 PMCID: PMC8146793 DOI: 10.3390/diagnostics11050806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 04/24/2021] [Accepted: 04/25/2021] [Indexed: 02/02/2023] Open
Abstract
Glycophorin hybrids such as GP.Mur are common in Southeast Asians. In Taiwan, clinically significant alloantibodies to the GP.Mur phenotype are the most important issue in blood banks. A large-scale screening of glycophorin hybrids in the Taiwanese population is urgently needed to ensure transfusion safety. Four clones of human hybridomas that secrete anti-Mia, anti-MUT, and anti-Mur were established by fusing human B-lymphocytes and myeloma cells (JMS-3). The specificity of each monoclonal antibody (MoAb) was characterized. Three MoAbs were applied on an Automated Pretransfusion Blood Testing Analyzer (PK7300/PK7400) for donor screening. Genotyping was performed to determine the detailed subgrouping of glycophorin hybrids. Four MoAbs are IgM antibodies. Anti-Mia (377T) binds to 46DXHKRDTYA54, 48HKRDTYAAHT57 peptides, and anti-Mia (367T) binds to 43QTNDXHKRD51 peptides (X indicates T, M, or K). Anti-Mur is reactive with 49KRDTYPAHTA58 peptides. Anti-MUT is reactive with 47KHKRDTYA54. A total of 78,327 donors were screened using three MoAbs, and 3690 (4.71%) were GP.Mur, 20 (0.025%) were GP.Hut, and 18 (0.022%) were GP.Vw. When the Mia antigen was introduced as routine screening, the frequency of Mi(a+) among blood donors in Taiwan was 4.66% (67,348/1,444,541). Mia antigen was implemented as a routine blood testing, and the results were labeled on all red blood cell (RBC) units.
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Hung SY, Hung IH, Yang YT, Liou HH, Lin TM. Frequent transfusion and specific HLA-DRB1 alleles correlate independently with Miltenberger blood group alloimmunization in dialysis patients. HLA 2020; 96:186-191. [PMID: 32388904 DOI: 10.1111/tan.13924] [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: 03/05/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 11/29/2022]
Abstract
Anti-"Mia " is the most frequent irregular RBC antibody in Taiwan due to high prevalence of Miltenberger antigens. Dialysis patients, a special patient group that needs frequent transfusions of RBCs, may have the greatest risk for developing anti-"Mia " antibodies. The aim of this study was to investigate the association between specific HLA-DRB1 alleles and Mi alloimmunization among dialysis patients. A cohort of 267 maintenance dialysis patients who had ever received at least one RBCs transfusion was enrolled. Anti-"Mia " was identified in patients' serum using the manual polybrene technique and HLA-DRB1 genotyping was carried out using polymerase chain reaction and sequence-specific oligonucleotide probe nonradioactive hybridization. Twenty-one (7.9%) of patients had positive anti-"Mia " tests and had received significantly more units of RBC transfusions than those without anti-"Mia " antibodies (11.3 ± 14.5 U vs 4.5 ± 10.1 U, P = .005). DRB1*04, *07, and *09 alleles were also more prevalent in patients with anti-"Mia " compared to those without Mi III alloimmunization. The multivariate logistic regression analysis showed that the number of RBC transfusions and the presence of DRB1*04, *07, and *09 phenotypes correlated independently with Mi III immunization (Odds ratios [OR] 1.05 (P = .001) for each unit of RBCs transfused; ORs 4.80 (P = .006), 12.29 (P = .005), and 5.42 (P = .003) for presence of DRB1*04, *07, and *09, respectively). This study is the first to demonstrate markedly high prevalence of Mi III alloimmunization in dialysis patients of Taiwan. Extending Mi III matching for RBC transfusions in susceptible dialysis patients may help to reduce the risk of Mi III alloimmunization in this patient population.
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Affiliation(s)
- Shih-Yuan Hung
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan.,Division of Nephrology, Department of Internal Medicine, E-DA Hospital, Kaohsiung, Taiwan
| | - I-Hsien Hung
- Department of Laboratory Medicine, E-DA Hospital, Kaohsiung, Taiwan
| | - Yu-Ting Yang
- Department of Laboratory Medicine, E-DA Cancer Hospital, Kaohsiung, Taiwan
| | - Hung-Hsiang Liou
- Division of Nephrology, Department of Internal Medicine, E-DA Hospital, Kaohsiung, Taiwan.,Division of Nephrology, Department of Medicine, Hsin-Jen Hospital, New Taipei City, Taiwan
| | - Tsun-Mei Lin
- Department of Medical Research, E-DA Hospital, Kaohsiung, Taiwan.,Department of Medical Laboratory Science, I-Shou University, Kaohsiung, Taiwan
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Lin X, Rubio G, Patel J, Banerjee S, Frame T, Billups N, Yang J. Hybrid glycophorin and red blood cell antigen genotyping in Asian American type O blood donors with Mi a phenotype. Transfusion 2019; 59:3767-3775. [PMID: 31697429 DOI: 10.1111/trf.15584] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 09/25/2019] [Accepted: 09/30/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND The GP.Mur glycophorin with Mia phenotype is relatively common and clinically significant in the Southeast Asian populations. The aim of this study is to genotype Mia -positive Asian American type O blood donors. Red blood cell (RBC) minor antigens were also determined in the same cohort. STUDY DESIGN AND METHODS Asian American blood donors of the Gulf Coast Regional Blood Center (Houston, TX) were screened using a typing reagent (NOVACLONE Anti-Mia Monoclonal IgG Typing Reagent, Dominion Biologicals Ltd) from March 2016 to July 2018. Aliquots of Mia -positive blood from type O donors were subjected to serologic confirmation using Mia - and/or Mur-specific GAMA210 and 64D6 monoclonal antibodies, and two human antisera. Extracted genomic DNA was amplified by polymerase chain reaction (PCR) using GYP hybrid gene/allele-specific primers followed by bidirectional Sanger sequencing. Zygosity for GYP*Mur and GYP*Bun was determined using TaqMan real-time PCR assay. Phenotypes of 35 RBC antigens and three phenotypic variants were determined with use of an in vitro diagnostic test, PreciseType HEA Molecular BeadChip Test (Immucor). RESULTS By screening 4600 blood donations in the Houston metropolitan area, 209 samples from 103 unique donors were identified to be Mia -positive. By PCR and sequencing analysis, 97 of the 103 Mia -positive donors carried hybrid genes GYP*Mur (89.7% including two homozygotes), GYP*Bun (6.2%), GYP*Vw (3.1%) and GYP*Hut (1.0%). Concordance between serology and DNA analysis was 98%, 99%, and 100% for the GAMA210, 64D6, and human antisera, respectively. Genotyping of RBC antigens showed that the Mia -positive donors were predominantly associated M+ N- S- s+ (48.5%) and M+ N+ S- s+ (38.1%) phenotypes. CONCLUSIONS The GP.Mur glycophorin is most prevalent in the Mia -positive Asian American type O blood donors.
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Flegel WA, Wagner FF. Blutgruppen: Alloantigene auf Erythrozyten. TRANSFUSIONSMEDIZIN 2004. [DOI: 10.1007/978-3-662-10597-9_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Lisowska E. Antigenic Properties of Human Glycophorins - An Update. THE MOLECULAR IMMUNOLOGY OF COMPLEX CARBOHYDRATES —2 2001; 491:155-69. [PMID: 14533797 DOI: 10.1007/978-1-4615-1267-7_12] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Glycophorins are complex heavily glycosylated antigens carrying peptidic and glycopeptidic epitopes. Detailed immunochemical studies showed that GPA/GPB and GPC/GPD molecules have defined sites which are particularly immunogenic. These sites include N-terminal portions of all glycophorins, internal fragments of their extracellular domains, and cytoplasmic tails. The extracellular epitopes involve directly oligosaccharide chains (e.g. blood group M- and N-related epitopes, or N-terminal epitopes of GPC) or have peptidic character, shown by the reaction of respective antibodies with synthetic peptides. Peptidic eitopes are independent of glycosylation, or are variably affected by adjacent O-glycans which may mask the epitopes or may be required for a proper exposure of an antibody binding site. Several low incidence epitopes are present on variant glycophorin molecules. Among anti-glycophorin antibodies there are the 'bispecific' ones, or antibodies recognizing an epitope formed by an interaction of two proteins (Wr(b)). Alltogether, the glycophorins serve as convenient model antigens for studying Ag-Ab interaction and a role of O-glycosylation in protein antigenic properties. Moreover, well defined specificty of monoclonal anti-glycophorin antibodies makes them more precise tools in serological investigation and identification of normal and variant antigens. Last but not least, elucidation of antigenic properties of glycophorins is important for identification and characterization of human anti-glycophorin antibodies, which in some cases create medical problems at transfusion or pregnancy.
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Affiliation(s)
- E Lisowska
- Department of Immunochemistry, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland
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Huang CH, Blumenfeld OO. MNSs Blood Groups and Major Glycophorins. MOLECULAR BASIS OF HUMAN BLOOD GROUP ANTIGENS 1995. [DOI: 10.1007/978-1-4757-9537-0_5] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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King MJ. Blood group antigens on human erythrocytes-distribution, structure and possible functions. BIOCHIMICA ET BIOPHYSICA ACTA 1994; 1197:15-44. [PMID: 8155690 DOI: 10.1016/0304-4157(94)90017-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Human erythrocyte blood group antigens can be broadly divided into carbohydrates and proteins. The carbohydrate-dependent antigens (e.g., ABH, Lewis, Ii, P1, P-related, T and Tn) are covalently attached to proteins and/or sphingolipids, which are also widely distributed in body fluids, normal tissues and tumors. Blood group gene-specific glycosyltransferase regulate the synthesis of these antigens. Protein-dependent blood group antigens (e.g., MNSs, Gerbich, Rh, Kell, Duffy and Cromer-related) are carried on proteins, glycoproteins and proteins with glycosylphosphatidylinositol anchor. The functions of these molecules on human erythrocytes remain unknown; some of them may be involved in maintaining the erythrocyte shape. This review describes the distribution, structures and probable biological functions of some of these antigens in normal and pathological conditions.
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Affiliation(s)
- M J King
- International Blood Group Reference Laboratory, Bristol, UK
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