PMID- 25437445 OWN - NLM STAT- MEDLINE DCOM- 20150915 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 9 IP - 12 DP - 2014 TI - Generation of recombination activating gene-1-deficient neonatal piglets: a model of T and B cell deficient severe combined immune deficiency. PG - e113833 LID - 10.1371/journal.pone.0113833 [doi] LID - e113833 AB - Although severe combined immune deficiency (SCID) is a very important research model for mice and SCID mice are widely used, there are only few reports describing the SCID pig models. Therefore, additional research in this area is needed. In this study, we describe the generation of Recombination activating gene-1 (Rag-1)-deficient neonatal piglets in Duroc breed using somatic cell nuclear transfer (SCNT) with gene targeting and analysis using fluorescence-activated cell sorting (FACS) and histology. We constructed porcine Rag-1 gene targeting vectors for the Exon 2 region and obtained heterozygous/homozygous Rag-1 knockout cell colonies using SCNT. We generated two Rag-1-deficient neonatal piglets and compared them with wild-type neonatal piglets. FACS analysis showed that Rag-1 disruption causes a lack of Immunoglobulin M-positive B cells and CD3-positive T cells in peripheral blood mononuclear cells. Consistent with FACS analysis, histological analysis revealed structural defects and an absence of mature lymphocytes in the spleen, mesenteric lymph node (MLNs), and thymus in Rag-1-deficient piglets. These results confirm that Rag-1 is necessary for the generation of lymphocytes in pigs, and Rag-1-deficient piglets exhibit a T and B cell deficient SCID (T-B-SCID) phenotype similar to that of rodents and humans. The T-B-SCID pigs with Rag-1 deficiency generated in this study could be a suitably versatile model for laboratory, translational, and biomedical research, including the development of a humanized model and assessment of pluripotent stem cells. FAU - Ito, Tetsuya AU - Ito T AD - Pig Breeding Laboratory, Central Research Institute for Feed and Livestock, ZEN-NOH (National Federation of Agricultural Co-operative Associations), Hokkaido, Japan. FAU - Sendai, Yutaka AU - Sendai Y AD - Biological Sciences Section, Central Research Institute for Feed and Livestock, ZEN-NOH (National Federation of Agricultural Co-operative Associations), Ibaraki, Japan. FAU - Yamazaki, Satoshi AU - Yamazaki S AD - Division of Stem Cell Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Japan Science and Technology Agency, Exploratory Research for Advanced Technology (ERATO), Nakauchi Stem Cell and Organ Regeneration Project, Tokyo, Japan. FAU - Seki-Soma, Marie AU - Seki-Soma M AD - Zen-noh Institute of Animal Health, ZEN-NOH (National Federation of Agricultural Co-operative Associations), Chiba, Japan. FAU - Hirose, Kensuke AU - Hirose K AD - Pig Breeding Laboratory, Central Research Institute for Feed and Livestock, ZEN-NOH (National Federation of Agricultural Co-operative Associations), Hokkaido, Japan. FAU - Watanabe, Motoo AU - Watanabe M AD - Division of Stem Cell Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Japan Science and Technology Agency, Exploratory Research for Advanced Technology (ERATO), Nakauchi Stem Cell and Organ Regeneration Project, Tokyo, Japan. FAU - Fukawa, Kazuo AU - Fukawa K AD - Pig Breeding Laboratory, Central Research Institute for Feed and Livestock, ZEN-NOH (National Federation of Agricultural Co-operative Associations), Hokkaido, Japan. FAU - Nakauchi, Hiromitsu AU - Nakauchi H AD - Division of Stem Cell Therapy, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Japan Science and Technology Agency, Exploratory Research for Advanced Technology (ERATO), Nakauchi Stem Cell and Organ Regeneration Project, Tokyo, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141201 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Homeodomain Proteins) RN - 128559-51-3 (RAG-1 protein) SB - IM MH - Animals MH - Animals, Newborn MH - B-Lymphocytes/*metabolism MH - Cells, Cultured MH - Disease Models, Animal MH - Fibroblasts/cytology MH - Gene Knockout Techniques MH - Homeodomain Proteins/*genetics MH - Nuclear Transfer Techniques MH - Severe Combined Immunodeficiency/*genetics/immunology/pathology MH - Swine MH - T-Lymphocytes/*metabolism PMC - PMC4249935 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2014/12/02 06:00 MHDA- 2015/09/16 06:00 PMCR- 2014/12/01 CRDT- 2014/12/02 06:00 PHST- 2014/07/28 00:00 [received] PHST- 2014/10/30 00:00 [accepted] PHST- 2014/12/02 06:00 [entrez] PHST- 2014/12/02 06:00 [pubmed] PHST- 2015/09/16 06:00 [medline] PHST- 2014/12/01 00:00 [pmc-release] AID - PONE-D-14-33789 [pii] AID - 10.1371/journal.pone.0113833 [doi] PST - epublish SO - PLoS One. 2014 Dec 1;9(12):e113833. doi: 10.1371/journal.pone.0113833. eCollection 2014.