Isolation and characterization of porcine PILRB gene and its alternative splicing variants
文献类型： 外文期刊
作者： Yang, Xiu-qin 1 ; Jing, Xiao-yan 1 ; Zhang, Cai-xia 1 ; Song, Yan-fang 1 ; Liu, Di 2 ;
作者机构： 1.Northeast Agr Univ, Coll Anim Sci & Technol, 600 Changjiang Rd, Harbin 150030, Heilongjiang, Peoples R China
2.Heilongjiang Acad Agr Sci, Inst Anim Husb, 368 Xuefu Rd, Harbin 150086, Heilongjiang, Peoples R China
关键词： PILRB; Expression; Minigene; Nonsense-mediated mRNA decay; Pig
期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）
ISSN： 0378-1119
年卷期： 2018 年 672 卷
页码：
收录情况： SCI
摘要： Paired immunoglobulin-like type 2 receptor (PILR)beta regulates inflammatory responses to pathogen infection, and therefore plays an important role in host disease resistance/susceptibility. However porcine PILR beta remains poorly characterized. In this study, we obtained the cDNA (V1) of its encoding gene, PILRB, and three alternative splicing (AS) variants (V2-4). The complete coding sequence of V1 was 621 bp long encoding a polypeptide of 206 aa. Compared with V1, V2 and V3 were formed by exon-skipping in the 3'-untranslated region (UTR), while V4 was formed by alternative 3' splice site of exon 3, resulting in a premature termination codon, combined with exon skipping in the 3'-UTR. Expression profile analysis showed that all the isoforms were most abundant in the spleen, and V1 was strongly induced by poly(I:C). Furthermore, the transcription of V1 altered with the increasing age and differed between species. Exon skipping in the 3'-UTR of V2 and V3 down-regulated expression of the luciferase reporter gene, and hence presumably of the PILRB gene, while V4 was subjected to nonsense mediated mRNA decay. Additionally, five novel splicing patterns were detected using the minigene approach, indicating complex AS of porcine PILRB. These results will help to reveal the role of PILRj3 in the host immune response using pig models, and will facilitate the breeding of pigs resistant to viral diseases through molecular breeding methods.
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