放射标记探针用于瘤缺氧成像成像
1Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Bioorganic & medicinal chemistry letters
|January 30, 2026
概括
开发用于非侵入性瘤缺氧成像的新型放射性标记探针对于个性化癌症治疗至关重要. 本综述强调了探针设计的进步,重点是优化药理动力学和氧化还原潜力,以提高成像特异性和疗效.
科学领域:
- 核医学就是核医学.
- 放射化学 放射化学是指辐射化学.
- 在瘤学瘤学.
背景情况:
- 瘤缺氧驱动癌症的进展和治疗耐药性.
- 非侵入性缺氧成像对于个性化癌症治疗至关重要.
研究的目的:
- 审查放射标记低氧成像探针的进展情况.
- 阐明结构-活动关系,以改进探头设计.
主要方法:
- 专注于生物还原性胺醇,金属复合物和缺氧诱导的蛋白质准探针.
- 分析结构变化的分析,包括糖化,PEGylation和位置异构体效应.
- 评估策略,如多价值方法,链接器优化和氧化还原潜力调整.
主要成果:
- 探头开发从脂性转向水性设计,以获得更好的药理动力学.
- 特定的结构修改增强了瘤的吸收,并减少了非特定的信号.
- 微调氧化还原潜力是增强成像特异性的关键.
结论:
- 理想的探针需要适当的药理动力学,最佳的氧化还原潜力和多目标策略的协同作用.
- 先进的探针设计原则对于下一代瘤缺氧成像剂至关重要.
- 这一审查为开发更有效的低氧向剂提供了基础.
相关概念视频
01:23Hypoxia
2.1K
Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
2.1K
03:31Labeling DNA Probes
9.4K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
9.4K
01:27Tumor Immunotherapy
1.9K
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
1.9K
02:07Tumor Progression
7.4K
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...
7.4K
02:17The Tumor Microenvironment
7.8K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
7.8K
02:40Cancer Stem Cells and Tumor Maintenance
6.0K
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
6.0K