相关实验视频
Updated: May 12, 2026

09:16
FIBS-enabled Noninvasive Metabolic Profiling
Published on: February 3, 2014
10.3K
一个生物化学传感器在体内具有持续延长的稳定性
Yihang Chen1,2, Kaiyu X Fu2,3,4, Renee Cotton5
1Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA.
Nature biomedical engineering
|May 23, 2025
概括
研究人员开发了一种新的合成生物传感器,灵感来自肠道粘膜. 这种仿生传感器提供了持续的,实时的目标分子体内检测,克服了生物污染等挑战.
科学领域:
- 生物材料科学 生物材料科学
- 生物工程是生物工程.
- 分析化学 分析化学
背景情况:
- 由于生物污染,探针退化和信号漂移,体内生物传感具有挑战性.
- 肠道粘膜在复杂的生物环境中提供了一种保护宿主细胞的模型.
研究的目的:
- 开发一种合成生物传感器,能够持续实时地在体内检测分析物.
- 创建一个强大的生物传感器系统,克服常见的in vivo限制.
主要方法:
- 设计了一个具有分层纳米-生物接口的仿生多元件传感器.
- 包含一个三维双连续的纳米孔状结构,聚合物涂层和aptamer开关.
- 在未经稀释的血清中测试了传感器稳定性和性能,在体外和体内自由移动的老鼠中进行了体外和体内测试.
主要成果:
- 传感器在血清中至少保持1个月,在大鼠血管中保持1周的稳定性.
- 在可重现的校准曲线下保持超过50%的基线信号.
- 在老鼠中,成功地跟踪了4天内静脉内实时的药理动力学.
结论:
- 开发的合成生物传感器为持续的体内运行提供了可通用的设计.
- 这种仿生方法在复杂的生物环境中提高了生物传感器的稳定性和功能.
- 该系统为长期的体内监测应用提供了一个有希望的基础.
相关概念视频
Labeling DNA Probes
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...
iChip
The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...
Microbial Biosensors
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

