PMID- 31382976 OWN - NLM STAT- MEDLINE DCOM- 20200709 LR - 20211204 IS - 1479-5876 (Electronic) IS - 1479-5876 (Linking) VI - 17 IP - 1 DP - 2019 Aug 5 TI - Novel method for simultaneously detecting HPA and HLA antibodies using Luminex microbeads. PG - 249 LID - 10.1186/s12967-019-2002-4 [doi] LID - 249 AB - BACKGROUND: Alloantibodies against human platelet antigens (HPAs) and human leukocyte antigen (HLA) are implicated in several immune-mediated platelet disorders. Detection of these antibodies is crucial in the diagnosis and management of these disorders. The aim of this study was to establish a novel method to simultaneously detect HPA-1, HPA-2, HPA-3, HPA-5 and HLA antibodies with Luminex microbeads technology. METHODS: Monoclonal antibodies specific for platelet glycoproteins and HLA class I molecules were separately coupled to the Luminex microbeads. We validated specificity of the Luminex platform using the following antibodies: anti-HPA-1a, anti-HPA-2b, anti-HPA-3a, anti-HPA-5a, and anti-HLA positive samples. Sensitivity was evaluated by a serial dilution (from neat to 1/1024) using the following antibodies: anti-HPA-1a, anti-HPA-3a standard sera, and anti-HPA-5a positive serum. Serum samples were collected from 36 neonatal alloimmune thrombocytopenia (NAIT) patients suspected of having HPA or HLA antibodies and 8 samples from ISBT platelet workshop were tested using the Luminex assay. RESULTS: The Luminex assay detected all antibodies tested from the known samples. The sensitivities of the Luminex assay detecting anti-HPA-1a, anti-HPA-3a, and anti-HPA-5a were 1:512, 1:64, and 1:128, respectively. The sensitivity of Luminex assay was higher than monoclonal antibody immobilization of platelet antigen method (MAIPA). No cross-reactivity was observed in the samples containing multi-platelet antibodies or mixture antibodies against HPA and HLA. The results of 44 samples with platelet disorders were consistent with those of the same samples processed with the MAIPA assay. CONCLUSION: Luminex microbeads coupled with monoclonal antibodies could be successfully used to detect HPA and HLA antibodies simultaneously, especially with high sensitivity in detecting HPA antibodies. FAU - Tao, Sudan AU - Tao S AD - Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. AD - Key Laboratory of Blood Safety Research, Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. FAU - Chen, Shu AU - Chen S AD - Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. AD - Key Laboratory of Blood Safety Research, Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. FAU - Hong, Xiaozhen AU - Hong X AD - Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. AD - Key Laboratory of Blood Safety Research, Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. FAU - He, Ji AU - He J AD - Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. AD - Key Laboratory of Blood Safety Research, Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. FAU - Zhu, Faming AU - Zhu F AUID- ORCID: 0000-0002-1963-9176 AD - Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. zfm00@hotmail.com. AD - Key Laboratory of Blood Safety Research, Zhejiang Province, Jianye Road 789, Hangzhou, 310052, Zhejiang, China. zfm00@hotmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190805 PL - England TA - J Transl Med JT - Journal of translational medicine JID - 101190741 RN - 0 (3a alloantigen, human) RN - 0 (5a alloantigen, human) RN - 0 (Antibodies, Monoclonal) RN - 0 (Antigens, Human Platelet) RN - 0 (HLA Antigens) RN - 0 (ITGB3 protein, human) RN - 0 (Integrin beta3) RN - 0 (Isoantibodies) SB - IM MH - Antibodies, Monoclonal/immunology MH - Antigens, Human Platelet/*analysis MH - Blood Platelet Disorders/*immunology MH - Blood Platelets/cytology/*immunology MH - Genotype MH - HLA Antigens/*analysis MH - Humans MH - Immune System MH - Immunoassay/instrumentation/*methods MH - Integrin beta3 MH - Isoantibodies MH - *Microspheres MH - Purpura, Thrombocytopenic, Idiopathic/blood PMC - PMC6683390 OTO - NOTNLM OT - HLA antibodies OT - HPA antibodies OT - Luminex assay OT - MAIPA COIS- The authors declare that they have no competing interests. EDAT- 2019/08/07 06:00 MHDA- 2020/07/10 06:00 PMCR- 2019/08/05 CRDT- 2019/08/07 06:00 PHST- 2019/03/26 00:00 [received] PHST- 2019/07/27 00:00 [accepted] PHST- 2019/08/07 06:00 [entrez] PHST- 2019/08/07 06:00 [pubmed] PHST- 2020/07/10 06:00 [medline] PHST- 2019/08/05 00:00 [pmc-release] AID - 10.1186/s12967-019-2002-4 [pii] AID - 2002 [pii] AID - 10.1186/s12967-019-2002-4 [doi] PST - epublish SO - J Transl Med. 2019 Aug 5;17(1):249. doi: 10.1186/s12967-019-2002-4.