镜像DNA纳米盒用于增强核酸探针的环境抗性
Shiquan Li1, Yihao Liu1, Minze He1
1Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China.
ACS nano
|August 15, 2024
概括
一个新的L-DNA组装镜像盒基于环境阻力 (L-AMBER) 策略可以在生物环境中保护核酸探针. 这项创新通过预防假阳性和改善生物调节来增强生物传感和生物医学.
科学领域:
- 生物医学工程 生物医学工程
- 分子生物学分子生物学
- 纳米技术纳米技术
背景情况:
- 核酸探针对于生物传感和生物医学至关重要,但在复杂的生物环境中容易降解和干扰.
- 这种降解导致假阳性信号和低效的生物调节,限制了它们的实际应用.
- 现有的方法往往难以在体内为核酸探针提供强大的保护.
研究的目的:
- 为了制定一个通用战略,L-DNA组装基于镜像盒的环境阻力 (L-AMBER),以保护核酸探针.
- 为了提高核酸探针在复杂的生物环境中如细胞质和体液中的稳定性和活性.
- 为了提高基于核酸的生物传感器和治疗应用的性能.
主要方法:
- 通过将D-DNA (SDR,aptamer或DNAzyme) 探针封装到L-DNA盒子中,使用L-D-L块DNA载体链构建L-AMBER探针.
- 使用L-DNA盒保护封装的D-DNA探针免受环境干扰,同时允许小目标分子进行识别.
- 评估L-AMBER探针在DNase I辅助放大检测,生物成像和活细胞中的miRNA沉默方面的性能.
主要成果:
- L-DNA盒有效地保护封装的D-DNA探针免受复杂的生物环境中的降解和干扰.
- L-AMBER探测器证明了DNase I辅助的扩增检测生物样本,减少了假阳性.
- L-AMBER探针在活细胞中实现了高效的miRNA沉默,超过了传统探针.
结论:
- L-AMBER提供了一种通用和有效的策略,用于提高核酸探针的环境耐受性.
- 这种方法显著提高了基于核酸的生物传感和生物医学应用的可靠性和效率.
- 对于诊断,治疗和体内分子操纵的进步,L-AMBER技术具有很大的前景.
相关概念视频
03:31Labeling DNA Probes
8.1K
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...
8.1K
02:34DNA Microarrays
17.3K
Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
17.3K