CatLearning:高精度基因表达预测从基因素标记
Weining Lu1, Yin Tang2, Yu Liu3
1Beijing National Research Center for Information Science and Technology, Tsinghua University, FIT Building, Haidian District, Beijing 100084, China.
Briefings in bioinformatics
|July 29, 2024
概括
CatLearning是一种使用修改的神经网络的新方法,它准确地解释了基因突变标记,以预测基因表达. 这种方法有助于理解表观遗传调节和识别疾病点.
科学领域:
- 基因组学就是基因组学.
- 计算生物学 计算生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 基因组基因基因突变 (基因组标记) 对于基因表达调节至关重要.
- 希斯顿标记的组合复杂性挑战了传统的实验解码.
- 了解这些调节机制对于疾病研究至关重要.
研究的目的:
- 开发一种用于解释基因组标记和预测基因表达的计算方法.
- 克服实验方法在解码复杂的组合组合中的局限性.
- 确定表观遗传性疾病的潜在诊断和治疗点.
主要方法:
- 开发了CatLearning,一种使用修改卷积神经网络与残余网络的方法.
- 集成的长距离基因组信息 (高达500Kb) 和学习的染色体相互作用特征.
- 使用单个组素标记进行准确的解释和预测.
主要成果:
- CatLearning 在解读基因组体标记和预测基因表达方面取得了高准确性.
- 这种方法有效地模拟了增强剂和整个基因组中的基因组修饰的变化.
- 演示了计算解释复杂的组素标记模式的能力.
结论:
- CatLearning提供了一种强大的工具,可以帮助人们理解基因标记架构和基因调节.
- 这些发现有助于开发涉及表观遗传变化的疾病的诊断和治疗策略.
- 突出了机器学习在解密复杂的生物调节网络方面的潜力.
相关概念视频
02:32Histone Modification
13.2K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
13.2K
02:35Chromatin Position Affects Gene Expression
23.3K
Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area.
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...
23.3K
01:36What is Gene Expression?
8.5K
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
8.5K
02:32Position-effect Variegation
6.3K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.3K
01:37Epigenetic Regulation
3.0K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.0K
02:25Spreading of Chromatin Modifications
8.2K
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
Writers
The writer...
8.2K