在细尾和肥尾羊中,蛋白基因 (PRNP) 的遗传变异性
Arif Wicaksono1, Aris Haryanto1, Alek Ibrahim2
1Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Open veterinary journal
|September 24, 2025
概括
这项研究确定了印尼绵羊的蛋白基因 (PRNP) 变异,发现缺乏对疹病毒的遗传抵抗力. 需要进一步的研究来防止疫情爆发,并了解PRNP变体的影响.
科学领域:
- 兽医遗传学 兽医遗传学
- 动物基因组学 动物基因组学
- 神经退行性疾病 神经退行性疾病
背景情况:
- 疹是一种致命的 transmissible spongiform encephalopathy (TSE) 在绵羊和山羊中,由蛋白基因 (PRNP) 多态性引起.
- 通过接触传播的错误折叠的蛋白导致TSE.
- 之前没有关于印尼绵羊品种PRNP变异性的数据.
研究的目的:
- 为了识别印尼细尾和肥尾羊的PRNP基因变异.
- 在这些绵羊种群中以基因型分类疹疾病风险.
主要方法:
- 从绵羊血液样本中提取了DNA.
- 使用特定的原始物放大PRNP基因片段并进行测序.
- 测序数据被分析并与GenBank样本对齐.
主要成果:
- 在PRNP基因中发现了10种核酸变异和11种单核酸多态.
- 发现了四种编码子单元类型 (G127A,G127S,G127V,Q189L) 和基因型变异.
- 所有经过分析的绵羊都具有A136L141R154Q171.1.的黄病代码.
结论:
- 在这项研究中,印尼绵羊因缺乏保护性等位基因而表现出较低的遗传抵抗力.
- 这项研究是首次报告印尼羊的PRNP基因变异.
- 进一步的研究至关重要,以预测草疫情爆发,并将PRNP变异与印尼绵羊表型联系起来.
相关概念视频
01:43Incomplete Dominance
29.6K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
29.6K
01:39Epistasis
50.1K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
50.1K
03:03Amyloid Fibrils
11.6K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
11.6K
02:26Comparing Copy Number Variations and SNPs
18.6K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
18.6K