单细胞转录基因揭示了个体水平上癌症的网络拓变化
1Chongqing Kingbiotech Corporation, Beijing, China.
Computational biology and chemistry
|March 4, 2025
概括
细胞类型特定的网络在不同的疾病状态中显示出不同的拓性质. 使用单细胞RNA测序数据分析个体网络,为癌症和性结肠炎等复杂疾病提供了新的见解.
科学领域:
- 网络生物学 网络生物学
- 系统生物学 系统生物学
- 基因组学就是基因组学.
背景情况:
- 网络生物学有助于理解复杂疾病.
- 单个样本网络可以保存个人数据,并可以区分疾病状态.
- 大量RNA测序限制了细胞类型特定的功能分析.
研究的目的:
- 在个体层面上研究细胞类型特定网络拓在不同病理状态的变异.
- 利用单细胞RNA测序 (scRNA-seq) 数据来构建和分析细胞类型特定的网络.
主要方法:
- 从癌症和性结肠炎的四个scRNA-seq数据集中构建的蛋白质-蛋白质相互作用 (PPI) 和共同表达网络.
- 使用CellChat R包分析了细胞与细胞之间的相互作用.
- 用Cytoscape和QUACN R包评估正常和病变组织之间的网络拓变化.
主要成果:
- 在癌症和腺瘤的上皮细胞中观察到增强的细胞-细胞相互作用.
- 在腺瘤,癌瘤和准癌症组织的上皮细胞共同表达网络中增加了平均邻居和图表指数.
- 与正常组织相比,瘤T细胞的共同表达网络密度更高.
- 在良性组织中表皮细胞共同表达网络的复杂性与结对瘤等级组相关.
结论:
- 特定于细胞类型的个体网络的拓性质在病理状态之间有所不同.
- 这些发现为细胞水平上复杂疾病的机制提供了新的见解.
- 突出了scRNA-seq用于剖析疾病特异性网络变化的实用性.
相关概念视频
02:26Protein Networks
3.9K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
3.9K
02:21Cancers Originate from Somatic Mutations in a Single Cell
11.4K
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
11.4K
02:53Adaptive Mechanisms in Cancer Cells
5.7K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.7K