相关实验视频

Updated: May 20, 2025

Capturing Chromosome Conformation Across Length Scales

Capturing Chromosome Conformation Across Length Scales

Published on: January 20, 2023

使用发电变压器模型增强单细胞和批量Hi-C数据

Ruoying Gao¹, Thomas N Ferraro², Liang Chen¹

¹College of Computer and Information Engineering, Tianjin Normal University, Tianjin 300387, China.

|March 26, 2025

概括

深度学习模型HiCENT通过改进染色体接触矩阵来增强3D基因组数据分辨率. 这有助于在3D基因组研究中更准确地分析基因调节和细胞功能.

科学领域:

基因组学就是基因组学.
计算生物学计算生物学
分子生物学分子生物学

背景情况:

染色体的3D组织对于基因表达和细胞功能至关重要.
高通量染色体构造捕获 (Hi-C) 技术映射了全基因组的染色体相互作用.
现有的Hi-C数据,特别是单细胞Hi-C (scHi-C),由于测序深度和噪声,其分辨率较低.

研究的目的:

开发一种用于赋值和增强低分辨率Hi-C和scHi-C接触矩阵的计算方法.
为了提高3D基因组结构数据的准确性和分辨率.
为了促进下游计算分析在3D基因组研究.

主要方法:

开发HiCENT,一种基于变压器的深度学习模型.
将HiCENT应用于大规模批量Hi-C和scHi-C数据集.
根据五种流行的现有数据增强方法进行验证.

主要成果:

与现有方法相比,HiCENT在批量Hi-C和scHi-C数据上表现出优异的增强效应.
在GM12878细胞系Hi-C数据中观察到增强的3D结构特征,包括拓相关的域和染色体循环.
来自五个人类细胞系的scHi-C数据的聚类性能得到了显著改善,超过了五种广泛使用的方法.

结论:

HiCENT有效地归因和增强染色质接触矩阵,改善3D基因组数据质量.
该模型在数据集中的适应性使其成为3D基因组研究的宝贵工具.
提高数据质量将促进基因组学,单细胞研究和奥米克研究中的计算分析.

关键词:

这就是Hi-C.数据归算数据的归算方法深度学习是一种深度学习.scHi-C 这样就好了.变压器模型变压器模型

更多相关视频

Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C

Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C

Published on: October 14, 2022

Promoter Capture Hi-C: High-resolution, Genome-wide Profiling of Promoter Interactions

Promoter Capture Hi-C: High-resolution, Genome-wide Profiling of Promoter Interactions

Published on: June 28, 2018

相关概念视频

Forced Transdifferentiation

Forced Transdifferentiation

Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...

Methods of Nuclear Reprogramming

Methods of Nuclear Reprogramming

Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...