超敏感核酸测试:从基础研究到临床翻译
Bao Li1,2, Xuanyu Gu3,4, Wu Zeng1,4
1School of Biomedical Engineering, Tsinghua University, Beijing 100084, China.
ACS nano
|November 19, 2025
概括
核酸检测技术的进步,包括放大依赖的,无放大和基于纳米技术的方法,正在为预测和个性化医学带来分子科学革命. 克服标准化和整合方面的挑战是广泛临床应用的关键.
科学领域:
- 分子生物学分子生物学
- 生物技术是生物技术.
- 纳米技术纳米技术
背景情况:
- 敏感的核酸检测对于将疾病管理转向预测和个性化医学至关重要.
- 目前的技术使得早期疾病检测,传染病监测和环境DNA分析成为可能.
研究的目的:
- 审查和综合核酸检测的技术格局.
- 探索放大依赖,无放大和基于纳米技术的策略.
- 讨论临床转化和核酸检测的未来方向.
主要方法:
- 对强化依赖平台 (qPCR,dPCR,异热方法) 的审查.
- 探索无放大模式 (基于CRISPR的诊断,纳米孔测序).
- 详细介绍基于纳米技术的生物传感器,使用纳米材料进行信号传导.
主要成果:
- 技术进化范围从定量聚合酶连锁反应 (PCR) 到数字PCR (dPCR) 和异热方法.
- 像CRISPR和纳米孔测序这样的无放大方法通过直接目标查询来实现灵敏度.
- 纳米技术生物传感器利用纳米材料产生光学或电子信号.
结论:
- 成功的临床翻译使得诸如癌症监测液体活检和环境DNA重建等应用成为可能.
- 关键的挑战包括预分析工作流的标准化和开发集成的"采样,回答"系统.
- 未来的进步在于将分子工具与微流体,自动化和人工智能融合为分散的,可预测的医疗保健.
相关概念视频
01:31Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
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02:28Leaky Scanning
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
01:31Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life