相关实验视频
Updated: Jan 29, 2026

07:02
Assessment of Chemical Toxicity in Adult Drosophila Melanogaster
Published on: March 24, 2023
4.2K
在Drosophila melanogaster中,全基因组查修改Cyclin G诱导的发育不稳定性的缺陷
Valérie Ribeiro1,2, Marco Da Costa1,2, Delphine Dardalhon-Cuménal1,2
1Sorbonne Université, CNRS, Inserm, Développement Adaptation et Vieillissement, Dev2A, Paris F75005, France.
Genetics
|January 28, 2026
概括
研究人员通过检查果翅膀不对称性来确定影响发育稳定的基因. 过度表达Cyclin G破坏了这种稳定性,揭示了对强壮发育和线粒体功能至关重要的遗传相互作用.
科学领域:
- 发展生物学 发展生物学
- 遗传学 遗传学是一种遗传学.
- 进化生物学 进化生物学
背景情况:
- 发育稳定性或对噪声的强度的遗传基础及其测量量,波动不对称性 (FA),尚未得到充分理解.
- 德洛索菲拉黑虫 (Drosophila melanogaster) 的Cyclin G (CycG) 基因对于生长和细胞循环调节至关重要.
- 过度表达特定的CycG异型 (CycGΔP) 会导致明显的翅膀大小和形状FA,表明发育稳定性受损.
研究的目的:
- 通过利用CycGΔP引起的极端FA来确定影响发育稳定的遗传因素.
- 为了选基因组修改CycGΔP诱导的翅膀FA的基因.
主要方法:
- 通过使用495个缺陷进行全基因组选,覆盖了Drosophila melanogaster中90%的圣色基因组.
- 与表达CycGΔP的重组染色体相结合的缺陷,以评估对翼FA的影响.
- 在发现的缺陷中分析了特定的基因突变,以了解它们在发育稳定中的作用.
主要成果:
- 确定了13个增强和16个减少CycGΔP诱导的翅膀FA的缺陷.
- 发现Cyclin G与DPP,WG,Hippo和INR/TOR通路相互作用,以确保器官的均生长.
- 发现CycGΔP诱导的FA涉及Larp,这是一种调节线粒体翻译的蛋白质,这表明线粒体在发育稳定性中的作用.
结论:
- 赛克林G在维持发育稳定方面发挥着至关重要的作用,与主要信号通路协同工作.
- 这项研究强调了Larp和线粒体活动作为CycGΔP诱导的FA背后的机制的关键组成部分.
- 这些发现为研究发育强度的遗传和分子基础开辟了新的途径.
相关概念视频
Genome-wide Association Studies-GWAS
15.6K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
15.6K
Genomic Imprinting and Inheritance
37.1K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
37.1K
Microtubule Instability
6.2K
Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated...
6.2K
Genomics
40.4K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
40.4K
Genome Size and the Evolution of New Genes
9.1K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.1K
Introduction to Developmental Psychology
1.5K
Developmental psychology explores the changes and continuities in human abilities throughout life, encompassing physical, cognitive, linguistic, and social dimensions. Human development is not restricted to growth, but includes aspects of decline, particularly in physical abilities as individuals age. Developmental psychologists seek to understand how people change as they age and how their mental and social skills evolve.Developmental MilestonesA key concept in developmental psychology is...
1.5K

