一种简单的方法来分析异种移植瘤中多种细胞类型的竞争性生长
bioRxiv : the preprint server for biology
|February 9, 2026
概括
这项研究引入了一种新的条形编码方法,使用PCR标签和qPCR来比较单个小鼠异种移植中的多种细胞类型. 这种方法提高了效率,并减少了癌症研究中的动物使用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 鼠标异种移植模型对于癌症研究至关重要,但由于可变的生长率和低细胞取代率,它们面临着局限性.
- 在单个异种移植中比较多种细胞类型或克隆是具有挑战性的,通常需要许多动物.
研究的目的:
- 开发和验证一种具有成本效益的方法,用于同时比较单个混合异种移植中的多种细胞类型的行为.
- 提高效率并减少用于异种移植研究所需的动物数量.
主要方法:
- 开发编码独特PCR标签的lentiviral载体,用于单个细胞系条形编码.
- 优化定量PCR (qPCR) 具有预放大步骤,以准确确定标记细胞类型的相对比例.
- 该方法在体外混合细胞培养和体内正极管切卡异种移植模型中的应用.
主要成果:
- 条形码和qPCR方法准确地量化了混合培养和异种移植中不同细胞类型的比例.
- 动物内的每个瘤和转移性病变都作为直接比较单位,减少了瘤间的变异性.
- 该方法在人类结肠癌细胞系异种移植模型中表现出有效性.
结论:
- 这种条形编码技术为异种移植模型的比较研究提供了一个简单的,具有成本效益的解决方案.
- 该方法有可能显著减少用于临床前癌症研究所需的动物数量.
- 它为分析多个细胞群体的竞争性生长和行为提供了一个强大的工具.
更多相关视频
09:28Patient-derived Orthotopic Xenograft Models for Human Urothelial Cell Carcinoma and Colorectal Cancer Tumor Growth and Spontaneous Metastasis
Published on: May 12, 2019
10.8K
09:53Labeling of Breast Cancer Patient-derived Xenografts with Traceable Reporters for Tumor Growth and Metastasis Studies
Published on: November 30, 2016
12.7K
相关概念视频
Competition
24.9K
When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.
24.9K
Mass Analyzers: Common Types
1.6K
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
1.6K
Types of Step-Growth Polymers: Polyesters
2.6K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
2.6K
Population Growth
28.7K
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
28.7K
Accessory Structures of the Skin: Hair Growth and Types
2.4K
Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft is pushed through the follicle toward the surface. Keratinization is completed as the cells are pushed to the skin surface to form the shaft of hair that is externally visible. The external hair is completely dead and composed entirely of keratin. Hair can be cut or shaven without damaging the hair structure because the cut is superficial. Most...
2.4K
Methods for Controlling Microbial Growth
1.7K
Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
1.7K
