一种基于germanene纳米片的新型比度生物传感器,用于快速和敏感地检测T细胞分化的BRCA1细胞
Yingying Huang1, Shu Xiao1, Zhiming Zhong1
1Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, 999077, China.
Biosensors & bioelectronics
|January 21, 2026
概括
研究人员开发了一种新型纳米传感器,用于跟踪活T细胞中的BRCA1mRNA水平. 该工具在T细胞激活过程中可视确认BRCA1基因上调,从而推进T细胞研究.
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
- 免疫学 免疫学 免疫学
背景情况:
- BRCA1基因对T淋巴细胞的发育和功能至关重要.
- 由于缺乏有效的现场工具,监测活T细胞中的BRCA1mRNA表达具有挑战性.
研究的目的:
- 开发一种比度光纳米传感器,用于在活体CD8+T细胞中量化BRCA1mRNA.
- 为了实现T细胞分化和激活期间的BRCA1mRNA动态的实时可视化和量化.
主要方法:
- 一个基于Förster共振能量转移 (FRET) 的纳米传感器是使用光素标记的DNA探头 (FAMcDNA) 和甲基烯纳米片 (GeT) 设计的.
- 传感器使用一个比度信号 (I520/I640),基于探针在与BRCA1mRNA杂交后从纳米板中脱离.
- 该系统的灵敏度,检测极限 (DNA 18.1 pM,mRNA 17.2 pM) 和响应时间 (~10分钟) 得到了验证.
主要成果:
- 纳米传感器表现出高灵敏度和快速响应时间来检测BRCA1 mRNA.
- 活体CD8+T细胞的放射性成像显示,T细胞激活时I520/I640比率显著增加,表明BRCA1上调.
- 观察到的上调与RNA-seq数据一致,验证了传感器的准确性.
结论:
- 开发的比度光纳米传感器提供了一种可靠的方法来量化活T细胞中的BRCA1mRNA.
- 这种工具有助于在T细胞分化和激活期间对基因表达的现场监测.
- 红色发射的德曼烯显示为先进的比度生物传感应用的平台.
相关概念视频
Local Anesthetics: Differential Sensitivity of Nerve Fibers
1.4K
Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
1.4K
B Cell Activation and Differentiation
16.2K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
16.2K
iPS Cell Differentiation
3.1K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
3.1K
Differentiation of Common Myeloid Progenitor Cells
4.0K
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
4.0K
Sensitivity, Specificity, and Predicted Value
1.2K
In healthcare diagnostics, laboratory tests play a crucial role in identifying and diagnosing a wide range of medical conditions. However, interpreting test results is not always straightforward. An abnormal test result does not always confirm the presence of a disease, just as a normal result does not guarantee its absence. To assess the reliability of these diagnostic tools, healthcare practitioners rely on two key statistical indicators: sensitivity and specificity.
Sensitivity is the...
Sensitivity is the...
1.2K
Cellular Differentiation
5.1K
How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...
A zygote is a...
5.1K


