PMID- 31420069 OWN - NLM STAT- MEDLINE DCOM- 20191104 LR - 20191210 IS - 1873-2534 (Electronic) IS - 0165-2427 (Linking) VI - 215 DP - 2019 Sep TI - Generation of porcine monoclonal antibodies based on single cell technologies. PG - 109913 LID - S0165-2427(19)30109-6 [pii] LID - 10.1016/j.vetimm.2019.109913 [doi] AB - The development of a rapid and efficient system to generate porcine monoclonal antibodies (mAbs) is an important step toward the discovery of critical neutralizing targets for designing rational vaccines against porcine viruses. In this study, we established a platform for producing porcine mAbs based on single cell technologies. First, we singled out an optimal donor from 507 pigs based on serum antibody neutralizing activity against porcine reproductive and respiratory syndrome virus (PRRSV). After identifying the contribution of IgG to the neutralizing activity, single CD45R(+)IgG(+)Ag(+) B cells were sorted from peripheral blood mononuclear cells (PBMCs). Single B cell RT-PCR was performed using primers designed to cover the germline repertoire of the porcine VH/VL gene segments. Paired VH/VLs were cloned into a eukaryotic expression vector and transfected into 293T cells. We demonstrate that full-length porcine mAbs were produced, and antigen-specific mAbs were obtained after further validation. The approach reported in this study can be applied to generate porcine mAbs against any given antigen and may help with the screening of neutralizing antibodies against porcine pathogens. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Li, Kongpan AU - Li K AD - State Key Laboratory of Agrobiotechnology, College of Biological Sciences, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China. FAU - Bai, Jianhui AU - Bai J AD - State Key Laboratory of Agrobiotechnology, College of Biological Sciences, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China. FAU - Du, Lijuan AU - Du L AD - State Key Laboratory of Agrobiotechnology, College of Biological Sciences, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China. FAU - Wang, Xifeng AU - Wang X AD - Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Science, Beijing, People's Republic of China. FAU - Ke, Cuncun AU - Ke C AD - State Key Laboratory of Agrobiotechnology, College of Biological Sciences, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China. FAU - Yan, Wei AU - Yan W AD - XINDAMUYE Company, Henan, People's Republic of China. FAU - Li, Changqing AU - Li C AD - XINDAMUYE Company, Henan, People's Republic of China. FAU - Ren, Liming AU - Ren L AD - State Key Laboratory of Agrobiotechnology, College of Biological Sciences, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China. FAU - Han, Haitang AU - Han H AD - State Key Laboratory of Agrobiotechnology, College of Biological Sciences, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China. Electronic address: hanhaitang@cau.edu.cn. FAU - Zhao, Yaofeng AU - Zhao Y AD - State Key Laboratory of Agrobiotechnology, College of Biological Sciences, National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China. Electronic address: yaofengzhao@cau.edu.cn. LA - eng PT - Journal Article PT - Validation Study DEP - 20190731 PL - Netherlands TA - Vet Immunol Immunopathol JT - Veterinary immunology and immunopathology JID - 8002006 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Neutralizing) RN - 0 (Antibodies, Viral) RN - 0 (Immunoglobulin Variable Region) SB - IM MH - Animals MH - Antibodies, Monoclonal/*biosynthesis/genetics/immunology/isolation & purification MH - Antibodies, Neutralizing/genetics/immunology MH - Antibodies, Viral/*biosynthesis/genetics/immunology/isolation & purification MH - Antibody Specificity MH - B-Lymphocytes/immunology MH - HEK293 Cells MH - Humans MH - Immunoglobulin Variable Region/genetics MH - Porcine respiratory and reproductive syndrome virus/*immunology MH - Real-Time Polymerase Chain Reaction/veterinary MH - Swine/*immunology MH - Transfection MH - V(D)J Recombination OTO - NOTNLM OT - Antigen-specific B cell OT - PRRSV OT - Porcine monoclonal antibody OT - Single cell RT-PCR EDAT- 2019/08/20 06:00 MHDA- 2019/11/05 06:00 CRDT- 2019/08/18 06:00 PHST- 2019/03/28 00:00 [received] PHST- 2019/07/17 00:00 [revised] PHST- 2019/07/30 00:00 [accepted] PHST- 2019/08/18 06:00 [entrez] PHST- 2019/08/20 06:00 [pubmed] PHST- 2019/11/05 06:00 [medline] AID - S0165-2427(19)30109-6 [pii] AID - 10.1016/j.vetimm.2019.109913 [doi] PST - ppublish SO - Vet Immunol Immunopathol. 2019 Sep;215:109913. doi: 10.1016/j.vetimm.2019.109913. Epub 2019 Jul 31.