四个核心基因型小鼠具有3.2MB的X-Y转位,扰乱了Tlr7的剂量
Jasper Panten1,2, Stefania Del Prete1, James P Cleland1,3
1Division of Regulatory Genomics and Cancer Evolution, German Cancer Research Center (DKFZ), Heidelberg, Germany.
Nature communications
|October 11, 2024
概括
在四个核心基因型 (FCG) 的小鼠中,一种新的X-Y转位增加了X相关基因表达,包括Tlr7. 这一发现影响了使用C57BL/6J FCG小鼠的研究,影响了性别染色体研究.
科学领域:
- 遗传学 遗传学 是一个
- 免疫学 免疫学 免疫学
- 生殖生物学 生殖生物学
背景情况:
- 四个核心基因型 (FCG) 鼠标模型对于研究性染色体和激素功能至关重要.
- 对FCG研究的准确解释依赖于理解模型内的遗传变异.
研究的目的:
- 在C57BL/6J FCG小鼠模型中识别和描述以前未报告的遗传异常.
- 研究这种异常对基因表达的功能后果及其对研究的影响.
主要方法:
- 利用基因组分析检测染色体重组.
- 量化X链基因的基因表达水平,包括Tlr7.
- 评估了转移对FCG研究解释的影响.
主要成果:
- 发现 X 染色体的一个 3.2 MB 区域已经转移到 Y 染色体 (YSry-).
- 这种转位导致X链基因的表达增加,特别是Tlr7,它是单链RNA的传感器和自身免疫性疾病的媒介.
- 这种X-Y转位的存在在C57BL/6J FCG小鼠中被证实为新发现.
结论:
- 鉴定到的X-Y转位代表了C57BL/6J FCG小鼠模型中的显著遗传变异.
- 这种转位使使用这种特定小鼠模型的研究结果的解释变得复杂,特别是那些研究性染色体功能和自身免疫反应的研究结果.
- 研究人员在设计或解释涉及C57BL/6J FCG小鼠的研究时应该意识到这种遗传异常,以确保准确的结论.
更多相关视频
09:08Investigating Target Gene Function in a CD40 Agonistic Antibody-induced Colitis Model using CRISPR/Cas9-based Technologies
Published on: June 2, 2021
1.8K
05:48Removal of an Internal Translational Start Site from mRNA While Retaining Expression of the Full-Length Protein
Published on: March 16, 2022
2.6K
相关概念视频
01:16In-vitro Mutagenesis
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
02:50Dosage Compensation
In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with distinct numbers of X chromosomes will have...
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with distinct numbers of X chromosomes will have...
02:43Mouse Models of Cancer Study
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...