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相关概念视频

Gene Duplication and Divergence02:37

Gene Duplication and Divergence

The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
Comparing Copy Number Variations and SNPs02:26

Comparing Copy Number Variations and SNPs

Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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相关实验视频

Updated: May 7, 2026

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
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Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis

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空间条允许在空间转录基因数据中进行克隆追踪.

Grant Kinsler1, Caitlin Fagan1, Haiyin Li2

  • 1Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, USA.

bioRxiv : the preprint server for biology
|February 24, 2025
PubMed
概括
此摘要是机器生成的。

空间条允许使用合成条形码同时进行克隆跟踪和空间转录学分析. 该方法将复杂组织中的克隆动态与环境信号区分开来.

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科学领域:

  • 细胞和分子生物学 细胞和分子生物学
  • 基因组学和生物信息学
  • 癌症研究 癌症研究

背景情况:

  • 了解细胞异质性和空间组织在复杂组织中至关重要.
  • 同时追踪细胞克隆及其空间基因表达仍然是一个挑战.
  • 现有的方法缺乏将内在的克隆行为与外部环境影响区分开来的能力.

研究的目的:

  • 介绍SpaceBar,一个新的细胞条码策略,用于同时克隆跟踪和空间转录学.
  • 开发一个剖析克隆动态和环境驱动的转录调节的框架.
  • 量化复杂组织微环境中基因表达的驱动因素.

主要方法:

  • 开发一个96合成条形码库用于蜂标签.
  • 将SpaceBar与基于图像的空间转录组学 (seqFISH) 的集成.
  • 在黑色素瘤瘤异种移植模型中的应用,以描述克隆身份和空间基因表达.
  • 创建一个基因评分指标来评估基因表达的内在和外在调节.

主要成果:

  • 通过结合条形码成功同时标记黑色素瘤细胞.
  • 在瘤异种移植中对克隆身份和空间基因表达的现场分析.
  • 基因表达驱动者的量化,区分细胞线索和环境信号.
  • 证明框架能够将克隆动态与环境转录调节分开.

结论:

  • SpaceBar提供了一个强大的工具,用于对克隆进化和空间基因表达的高分辨率分析.
  • 开发的基因评分指标有效地区分了影响细胞表型的内在和外在因素.
  • 这种方法为疾病模型中的复杂组织背景和细胞行为提供了新的见解.