基于GWAS的6个免疫相关基因在大蒲莲猪和长白猪群体内的表达分析
免疫相关基因的筛选与研究是猪(Sus scrofa)抗病育种的前提与基础。本研究基于课题组前期对仔猪的T淋巴细胞亚群指标进行的全基因组关联分析(genome-wide association study,GWAS),对5号染色体上一个1.05 Mb免疫调控区域内包含的6个免疫相关基因:白细胞分化抗原4(cluster of differentiation 4,CD4)、淋巴细胞活化基因-3(lymphocyte activation gene-3,LAG3)、白细胞分化抗原27(cluster of differentiation 27,CD27)、淋巴毒素β-受体(lymphotoxin b...
Saved in:
| Published in | 农业生物技术学报 Vol. 26; no. 2; pp. 263 - 271 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
2018
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-7968 |
Cover
| Summary: | 免疫相关基因的筛选与研究是猪(Sus scrofa)抗病育种的前提与基础。本研究基于课题组前期对仔猪的T淋巴细胞亚群指标进行的全基因组关联分析(genome-wide association study,GWAS),对5号染色体上一个1.05 Mb免疫调控区域内包含的6个免疫相关基因:白细胞分化抗原4(cluster of differentiation 4,CD4)、淋巴细胞活化基因-3(lymphocyte activation gene-3,LAG3)、白细胞分化抗原27(cluster of differentiation 27,CD27)、淋巴毒素β-受体(lymphotoxin beta receptor,LTBR)瘤坏死因子受体超家族成员1A(tumor necrosis factor receptor superfamily member 1a,TNFRSF1A)和白细胞分化抗原9(cluster of differentiation 9,CD9)在大蒲莲和长白仔猪群体外周血液中的表达量进行检测,并对各基因开展品种和母猪效应分析,为进一步筛选影响大蒲莲仔猪高抗病力的候选基因提供借鉴。采集大蒲莲猪(104头)和长白猪(171头)35日龄仔猪的外周血,提取总RNA,逆转录为cDNA后,通过qRT-PCR的方法进行上述免疫相关基因和内参基因β2-微球蛋白(beta-2-microglobulin,B_2M)的表达水平检测,在对各免疫基因表达量通过内参基因校正后,对矫正后的表达量ΔCt在大蒲莲猪和长白猪群体内的表达特征、品种和母猪效应进行分析。结果显示,大蒲莲仔猪CD4和CD27基因表达量极显著低于长白仔猪(P〈0.01),且母猪效应差异也达到极显著水平(P〈0.01);大蒲莲仔猪TNFRSF1A基因表达量显著低于长白仔猪(P〈0.05);大蒲莲仔猪CD9基因表达量极显著高于长白仔猪(P〈0.01)。本研究对基于GWAS的6个免疫相关基因在大蒲莲猪和长白猪群体内的表达开展分析,其中CD4、CD27、TNFRSF1A和CD9 4个基因在大蒲莲和长白仔猪群体间显著差异表达,这些基因可以考虑作为影响大蒲莲仔猪高抗病力的候选基因,为大蒲莲仔猪高抗病力性状的标记辅助选择研究提供基础。 |
|---|---|
| Bibliography: | ZHAO Xue-Yan, WANG Yan-Ping, HU Hong-Mei ,WANG Ji-Ying, GUO Jian-Feng ( Institute of Animal Science and Veterinary Medicine/Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan 250100) Screening immune-related genes is important for pig(Sus scrofa) disease resistant breeding. In ourprevious genome-wide association study(GWAS) of T lymphocyte subpopulation traits in piglets(Sus scrofa),an immune regulation region of 1.05 Mb was identified, which contained 6 immune-related genes, that is,cluster of differentiation 4(CD4), lymphocyte activation gene-3(LAG3), cluster of differentiation(CD27),lymphotoxin beta receptor(LTBR), tumor necrosis factor receptor superfamily member 1 a(TNFRSF1 A) and cluster of differentiation(CD9). In the present study, to unravel the 6 genes expression differences between breeds with different disease resistance, one typical Chinese indigenous breed(Dapulian) with higher disease resistance in North China and one comme |
| ISSN: | 1674-7968 |