Examination of polymorphisms in the sequence encoding the extracellular domain of Suffolk and Kazak sheep’s Toll-like receptor 7

Examination of polymorphisms in the sequence encoding the extracellular domain of Suffolk and Kazak sheep’s Toll-like receptor 7
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萨福克羊和哈萨克羊 Toll 样受体 7 胞外域编码序列多态性的检查

DOI:
10.18805/ijar.11421
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发表时间:
2016-08
期刊:
Indian J. Anim. Res.,
影响因子:
--
通讯作者:
盛金良
盛金良
中科院分区:
其他
文献类型:
--
作者:
盛金良

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先天免疫通过toll样受体7 (TLR7)对单链RNA的识别在免疫反应的发生中起着重要的调节作用。本研究采用pcr -单链构象多态性(PCR-SSCP)分析方法研究了绵羊TLR7外结构域(ECD)编码序列的遗传变异。用12对不同的引物(ECD-1 - ECD-12)进行PCR, 4对引物(ECD-2、-5、-6、-7)的产物中检测到多态性。ECD-2和ECD -5扩增产物在萨福克羊和哈萨克斯坦羊中存在突变,而ECD-6和ECD-7扩增产物仅在萨福克羊中存在突变。萨福克的第二对引物突变不符合Hardy Weinberg平衡。由于本研究中发现的突变可能会影响TLR7的结构和功能,从而影响对病原体的免疫反应。数据表明需要进行进一步的疾病关联研究,以检验这些发现在牲畜育种中的有用性。
Innate immune recognition of single-stranded RNA via Toll-like receptor 7 (TLR7) plays an important regulatory role in the development of the immune response. In the study, we used PCR-single-strand conformational polymorphism (PCR-SSCP) analysis to investigate genetic variations in the sequence encoding the ectodomain (ECD) of ovine TLR7. PCR was carried out using 12 different primer pairs (ECD-1– ECD-12), and polymorphisms were detected in the products for 4/12 pairs (ECD-2, -5, -6, and -7). ECD-2 and ECD -5 amplified products with mutations in Suffolk and Kazakstan sheep, while ECD-6 and ECD-7 amplified products with mutations only exist in Suffolk. The second pair of primers mutation in Suffolk does not conform to Hardy Weinberg equilibrium. As the mutations identified in this study may influence the structure and function of TLR7 and may thus affect the immune response to pathogens. The data indicate to undertake further disease associations studies to examine the usefulness of these findings in livestock breeding.
DOI: 10.1016/j.molimm.2003.10.006
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