Choi, Yun-JungKim, EunSuReza, Abu Musa Md TalimurHong, KwonhoSong, HyukPark, ChankyuCho, Seong-KeunLee, KihoPrather, Randall S.Kim, Jin-Hoi2019-09-202019-09-202017-09-19http://hdl.handle.net/10919/93947This study comparatively investigated the transcriptional, physiological, and phenotypic differences of the immune disorder between severe combined immunodeficient (SCID) mouse and pig models. We discovered that the recombination activating gene-2 (Rag-2) SCID mice, but not RAG-2 SCID pigs, showed intense, infrequent, and mild cluster of CD3(+)-, CD4(+)-, and CD8(+) signals respectively, suggesting that distinct species-specific effects exist. Furthermore, the expression of six relevant genes (NFATC1, CD79B, CD2, BLNK, FOXO1, and CD40) was more downregulated than that in the Rag-2 SCID mice, which provides a partial rationale for the death of T/B cells in the lymphoid organs of RAG-2 SCID pigs but not in Rag-2 SCID mice. Further, NK cell maturation-related gene expression was significantly lower in RAG-2 SCID pigs than in Rag-2 SCID mice. Consistently, the RAG-2 SCID pigs, but not Rag-2 SCID mice, developed human induced pluripotent stem cell-derived teratomas that were the same as those of perforin/Rag-2 SCID mice. Therefore, these unexpected findings indicate the superiority of RAG-2 SCID pigs over Rag-2 SCID mice as a suitable model for investigating human diseases.application/pdfenCreative Commons Attribution 3.0 Unportedsevere combined immunodeficientSCIDrecombination activating gene-2RAG-2TalenImmunology and Microbiology SectionImmune responseImmunityArticle - Refereedhttps://doi.org/10.18632/oncotarget.20626841290502121949-2553