克隆复杂性定义了不同的瘤内在生物学和在扩散大B细胞淋巴瘤的预后
Takahiro Haeno1,2, Kazuko Sakai1,3, Shuji Minamoto1,2
1Kindai University Faculty of Medicine, Department of Genome Biology, Osaka, Japan.
Cancer medicine
|February 2, 2026
概括
在扩散性大B细胞淋巴瘤 (DLBCL) 中,内瘤异质性 (ITH) 与较差的结果有关,特别是在激活B细胞 (ABC) 亚型中. 在DLBCL瘤中的克隆复杂性显示出独特的生物特征和突变,影响疾病的发病性.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 遗传学 遗传学是一种遗传学.
背景情况:
- 内异质性 (ITH),即存在不同的癌细胞亚克隆,与许多癌症的预后不佳有关.
- ITH在扩散性大B细胞淋巴瘤 (DLBCL) 的临床和生物学意义尚不清楚.
研究的目的:
- 研究克隆复杂性对DLBCL临床结果和生物特征的影响.
- 评估DLBCL亚型中克隆组成和患者存活率之间的关系.
主要方法:
- 基于SNP阵列的方法用于确定74名新诊断的晚期DLBCL患者的克隆组成 (CC).
- 克隆复杂性通过CC数量化,并进行生存分析.
主要成果:
- 与单一CC瘤 (0个亚克隆,69.1%) 相比,患有多重CC瘤 (≥1个亚克隆) 的患者的5年无事件生存率 (38.9%) 显着较差 (p=0.0520).
- 这种关联在激活B细胞 (ABC) 亚型 (p=0.0450) 中是显著的,但不是生殖中心B细胞 (GCB) 亚型 (p=0.910).
- 多-CC瘤显示细胞循环通路活性增加,Ki-67率更高,转录状态更差异化,突变负担更高,特别是在ABC亚型中.
结论:
- 克隆复杂性是DLBCL的一个重要因素,特别是在ABC亚型中.
- 瘤内在的特征和生物多样性,包括突变和途径激活,都被克隆复杂性所捕获.
- 这些发现为DLBCL病原体和异质性的作用提供了新的见解.
相关概念视频
Intrinsically Disordered Proteins
19.5K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
19.5K
Intrinsically Disordered Proteins
2.8K
2.8K
T Cell Activation and Clonal Selection
16.1K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
16.1K
Diffusion
218.6K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
218.6K
Diffusion
6.4K
Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
6.4K
Protein Complexes with Interchangeable Parts
2.9K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.9K


