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相关概念视频

Channel Rhodopsins01:11

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...

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Detection of Microregional Hypoxia in Mouse Cerebral Cortex by Two-photon Imaging of Endogenous NADH Fluorescence
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在多细胞模型中在芯片上检测NADH,使用具有增强灵敏度的AlGaN/GaN光探测器阵列.

Zhongshu Xiong1, Guocheng Fang1, Ramit Kumar Mondal1

  • 1School of Electrical and Electronics Engineering, Nanyang Technological University, 50 Nanyang Ave., Singapore 639798, Singapore.

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概括

一个新的光电传感器阵列使尼古丁胺氨酸二核酸 (NADH) 的敏感检测成为可能. 这一进步为癌症查和护理点诊断提供了快速量化.

关键词:
3D多细胞模型 3D多细胞模型它们是AlGaN/GaNN.它们是NADH和NADH.生物传感器生物传感器一个光检测器阵列.

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科学领域:

  • 生物医学工程 生物医学工程
  • 分析化学 分析化学
  • 生物物理学的生物物理.

背景情况:

  • 尼古丁胺胺氨基二核酸 (NAD) 对于细胞的氧化还原反应,能量代谢和癌症至关重要.
  • 现有的NADH检测方法通常依赖于复杂的光学测量.
  • 需要快速,灵敏和小型化的NADH量化技术.

研究的目的:

  • 开发一个小型的,芯片上的光电传感器阵列,用于敏感的NADH量化.
  • 使用AlGaN/GaN二维电子气体 (2DEG) 光探测器进行NADH检测.
  • 为生物医学研究和临床诊断提供先进的平台.

主要方法:

  • 使用AlGaN/GaN 2DEG光探测器制造小型光电传感器阵列.
  • 利用NADH和NAD+之间的吸收差异进行量化.
  • 用3D多细胞模型测试传感器的性能.

主要成果:

  • 开发的传感器表现出超低的暗电流和超高的紫外线光响应.
  • 实现了快速而敏感的NADH检测,性能优于商业测试.
  • 在复杂的3D多细胞模型中成功检测到NADH水平.

结论:

  • 基于AlGaN/GaN 2DEG光探测器的传感器在NADH量化方面取得了重大进展.
  • 该传感器平台具有用于高通量测试和临床诊断的潜力.
  • 这种方法解决了在生物医学和临床环境中对高效的NADH传感的需求.