定制患者获得的Ewing肉瘤体外模型的特征
Elizabeth A Roundhill1, Elton J R Vasconcelos2, John Davies3
1Children's Cancer Research Group, Leeds Institute of Medical Research, St. James's University Hospital, Leeds LS9 7TF, UK.
Cancers
|February 13, 2026
概括
来自患者的尤宁肉瘤 (ES) 培养物 (PDES) 准确地模拟患者的瘤. 这些PDES模型显示药物耐药性和敏感性,反映了临床结果,有助于向治疗的开发.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 翻译研究是翻译研究.
背景情况:
- 准确的临床前模型对于尤文肉瘤 (ES) 向治疗的开发至关重要.
- 来自患者的ES培养物 (PDES) 被建立并表征以改善临床前建模.
- 了解ES生物学需要反映瘤异质性的模型.
研究的目的:
- 在体外建立和描述患者衍生的尤文肉瘤 (PDES) 培养物.
- 评估PDES在预测临床药物反应中的有用性.
- 将PDES与传统细胞系进行比较,用于临床前药物查.
主要方法:
- 光在位杂交,RT-PCR,以及用于EWSR1聚变分析的西部涂抹.
- 免疫光和免疫组织化学用于增殖和基因表达.
- 下一代测序用于DNA和转录基因分析.
- 用化疗剂,辐射和向药物的药物敏感性测定.
主要成果:
- PDES证实了EWSR1的融合DNA,RNA和蛋白质表达.
- 与患者瘤相关的PDES基因表达和扩散标记.
- 与细胞系相比,PDES表现出较慢的生长,放射电阻和化疗耐药性.
- PDES对多向氨酸激酶抑制剂 (mTKIs) 和特拉贝克提丁表现出敏感性,反映了临床反应.
结论:
- PDES模型准确地反映了Ewing瘤生物学和患者瘤特征.
- PDES显示出与临床结果相关的药物反应差异,包括耐药性和敏感性.
- 将PDES纳入临床前管道可以提高针对尤文肉瘤的向药物的优先级.
相关概念视频
01:03Rous Sarcoma Virus (RSV) and Cancer
6.4K
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
6.4K
03:02Measurement: Derived Units
56.1K
The International System of Units or SI system, by international agreement, has fixed measurement units for seven fundamental properties: length, mass, time, temperature, electric current, amount of substance, and luminosity. These are called the SI base units.
56.1K
01:13In Vitro Drug Dissolution: Compendial Testing Models I
312
Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...
312
01:09In Vitro Drug Dissolution: Compendial Testing Models II
340
Various dissolution methods are utilized to assess a drug’s dissolution rate, including the flow-through cell, paddle-over-disk, cylinder, and reciprocating disk methods.The flow-through cell apparatus (USP (United States Pharmacopeia) method 4) comprises a reservoir for the dissolution medium and a pump that propels the medium through the cell containing the test sample. This method is crucial for assessing modified-release dosage forms with minimally soluble active ingredients,...
340
01:29Higher Derivatives
115
In calculus, higher-order derivatives extend the idea of differentiation beyond the first derivative to capture successive rates of change. These derivatives provide detailed information about the behavior of functions and have important applications in both mathematics and physics. To illustrate these concepts, consider the example functionwhich serves as a useful case study for exploring higher derivatives.The first derivative represents the slope of the original function. The second...
115
01:15Derivatives
194
DerivativesThe concept of instantaneous rate of change is fundamental in both mathematics and physics, particularly in describing how a moving object alters its position with respect to time. This rate is captured mathematically through the derivative of a function. The derivative at a point represents the slope of the tangent line to the curve of the function at that point and quantifies how the function’s output changes per infinitesimal change in input.Derivative of the Square Root...
194