相关实验视频
Updated: Mar 8, 2026

10:40
CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis
Published on: April 25, 2022
2.9K
Y染色体变异和前列腺癌的祖先差异
Pamela X Y Soh1, Alice Adams1,2, M S Riana Bornman3
1Ancestry and Health Genomics Laboratory, Charles Perkins Centre, School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2006, Australia.
iScience
|June 2, 2025
概括
患有前列腺癌 (PCa) 的非洲男性显示Y染色体遗传变化的更高率. 这些Y染色体变化可能导致治疗耐药性和非洲人群的较差结果.
科学领域:
- 遗传学 遗传学 是一个
- 在瘤学瘤学.
- 基因组医学是基因组医学.
背景情况:
- 前列腺癌 (PCa) 呈现出显著的祖先差异,不成比例地影响非洲男性.
- 基因组分析研究在很大程度上忽视了Y染色体在PCa中的作用,特别是关于祖先变异的研究.
- 在癌症基因组学中,Y染色体对于男性的决定至关重要,但仍未得到充分研究.
研究的目的:
- 在非洲和欧洲前列腺癌患者中研究Y染色体的遗传和体质突变格局.
- 确定Y染色体变异有助于祖先偏差和前列腺癌中观察到的不同结果.
- 探索Y染色体在前列腺癌攻击性和治疗耐药性方面的潜在作用.
主要方法:
- 在一组106名非洲和57名欧洲前列腺癌病例中进行了完整的Y染色体审讯.
- 分析包括Y染色体的遗传 (生殖线) 和体质变异.
- 分析了Y-哈普组子结构,以了解早期分离变异.
主要成果:
- 欧洲男性患罕见,潜在有害的生殖系Y染色体变异的可能性增加了3.1倍.
- 与欧洲患者 (14%) 相比,非洲患者 (26.4%) 的Y染色体瘤发生事件比例更高.
- 来自非洲的瘤在KDM5D,PCDH11Y和RBMY等基因中显示出明显的体质损失,除了DDX3Y和USP9Y的共同变化外.
结论:
- 在前列腺癌中,Y染色体含有显著的遗传和获得变异,在前列腺癌的祖先群体之间存在差异.
- 特定的Y染色体变异,特别是在非洲人群中,可能会导致瘤的攻击性增加和较低的死亡率.
- 这项研究强调Y染色体是前列腺癌差异的潜在因素,并要求进一步调查其在治疗耐药性方面的作用.
相关概念视频
The Y Chromosome Determines Maleness
8.6K
The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size....
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size....
8.6K
X and Y Chromosomes
30.8K
Among mammals, the gender of an organism is determined by the sex chromosomes. Humans have two sex chromosomes, X and Y. Every human diploid cell has 22 pairs of autosomes and one pair of sex chromosomes. A human female has two X chromosomes, while a male has one X chromosome and one Y chromosome.
The germline cells such as egg and sperm cells carry only half the number of chromosomes, i.e., 22 autosomes and one sex chromosome. All eggs have an X chromosome, while sperm cells can carry an X or...
The germline cells such as egg and sperm cells carry only half the number of chromosomes, i.e., 22 autosomes and one sex chromosome. All eggs have an X chromosome, while sperm cells can carry an X or...
30.8K
The Ratio of X Chromosome to Autosomes
10.0K
In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
10.0K
Pedigree Analysis
90.3K
Overview
90.3K
X-linked Traits
59.2K
In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
59.2K
Synteny and Evolution
3.9K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.9K

