在瘤中活体受体可用性的动态跟踪,使用配对剂成像
Yichen Feng1, Xiaochun Xu2, Cody C Rounds3
1Geisel School of Medicine, Dartmouth College, 1 Rope Ferry Road, Hanover, New Hampshire 03755, United States.
Molecular pharmaceutics
|May 14, 2025
概括
配对剂成像 (PAI) 在头癌 (HNC) 模型中动态跟踪表皮生长因子受体 (EGFR) 的可用性. PAI准确量化了受体可用性变化,与单独的光不同,有助于药物开发.
科学领域:
- 生物医学成像学 生物医学成像学
- 分子成像学分子成像学
- 癌症研究 癌症研究
背景情况:
- 对受体可用性 (RA) 的定量评估对于药物开发和临床实践至关重要.
- 头癌 (HNC) 模型需要动态跟踪治疗评估的受体可用性.
研究的目的:
- 评估配对剂成像 (PAI) 用于在HNC模型中动态量化表皮生长因子受体 (EGFR) 的可用性.
- 评估成像剂剂量和EGFR阻断对RA估计的影响.
主要方法:
- 在Xenograft HNC瘤携带的小鼠中,不同剂量的ABY-029和IRDye 700DX被同时使用.
- 进行光成像,然后给予Z03115 (测试),人类EGF (阳性对照) 或PBS (载体).
- 分析了动力光和PAI曲线以确定RA变化.
主要成果:
- 在EGFR阻断后,PAI显示了RA的减少,符合预期.
- 仅仅对成像剂的直接光测量显示了不可量化的增加,无法可靠地评估RA.
- 不同的ABY-029剂量之间没有观察到预阻断RA的显著差异.
结论:
- PAI能够动态和准确地监测个体动物的受体可用性,无论成像剂的剂量如何.
- PAI是一种强大的成像策略,用于优化制药开发中的药物剂量,并使患者特定的分子治疗成为可能.
相关概念视频
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Mouse Models of Cancer Study
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
Targeted Cancer Therapies
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
There are several types of targeted therapies against specific...
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Mouse Models of Cancer Study
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
Targeted Cancer Therapies
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
There are several types of targeted therapies against specific...


