PMID- 37187759 OWN - NLM STAT- MEDLINE DCOM- 20230517 LR - 20230518 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 14 DP - 2023 TI - Development of a high-resolution mass-spectrometry-based method and software for human leukocyte antigen typing. PG - 1188381 LID - 10.3389/fimmu.2023.1188381 [doi] LID - 1188381 AB - INTRODUCTION: The human leukocyte antigen (HLA) system plays a critical role in the human immune system and is strongly associated with immune recognition and rejection in organ transplantation. HLA typing method has been extensively studied to increase the success rates of clinical organ transplantation. However, while polymerase chain reaction sequence-based typing (PCR-SBT) remains the gold standard, cis/trans ambiguity and nucleotide sequencing signal overlay during heterozygous typing present a problem. The high cost and low processing speed of Next Generation Sequencing (NGS) also render this approach inadequate for HLA typing. METHODS AND MATERIALS: To address these limitations of the current HLA typing methods, we developed a novel typing technology based on nucleic acid mass spectrometry (MS) of HLA. Our method takes advantage of the high-resolution mass analysis function of MS and HLAMSTTs (HLA MS Typing Tags, some short fragment PCR amplification target products) with precise primer combinations. RESULTS: We correctly typed HLA by measuring the molecular weights of HLAMSTTs with single nucleotide polymorphisms (SNPs). In addition, we developed a supporting HLA MS typing software to design PCR primers, construct the MS database, and select the best-matching HLA typing results. With this new method, we typed 16 HLA-DQA1 samples, including 6 homozygotes and 10 heterozygotes. The MS typing results were validated by PCR-SBT. DISCUSSION: The MS HLA typing method is rapid, efficient, accurate, and readily applicable to typing of homozygous and heterozygous samples. CI - Copyright (c) 2023 Wang, Sun, Zhu, Xu and Zhou. FAU - Wang, Kun AU - Wang K AD - Institutes of Biomedical Sciences, Fudan University, Shanghai, China. FAU - Sun, Zetao AU - Sun Z AD - Institute of Transfusion Medicine, Shenzhen Blood Center, Shenzhen, Guangdong, China. FAU - Zhu, Fei AU - Zhu F AD - Institutes of Biomedical Sciences, Fudan University, Shanghai, China. FAU - Xu, Yunping AU - Xu Y AD - Institute of Transfusion Medicine, Shenzhen Blood Center, Shenzhen, Guangdong, China. FAU - Zhou, Feng AU - Zhou F AD - Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion, Minister of Education, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230428 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 SB - IM MH - Humans MH - Histocompatibility Testing/methods MH - Sequence Analysis, DNA MH - *High-Throughput Nucleotide Sequencing/methods MH - Polymerase Chain Reaction MH - *Software PMC - PMC10175642 OTO - NOTNLM OT - HLA typing OT - cis/trans ambiguity OT - mass spectrometry OT - nucleic acid mass spectrometry OT - polymorphism COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/05/16 01:09 MHDA- 2023/05/17 06:42 PMCR- 2023/01/01 CRDT- 2023/05/15 19:30 PHST- 2023/03/22 00:00 [received] PHST- 2023/04/12 00:00 [accepted] PHST- 2023/05/17 06:42 [medline] PHST- 2023/05/16 01:09 [pubmed] PHST- 2023/05/15 19:30 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2023.1188381 [doi] PST - epublish SO - Front Immunol. 2023 Apr 28;14:1188381. doi: 10.3389/fimmu.2023.1188381. eCollection 2023.