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相关概念视频

Coronavirus01:29

Coronavirus

Coronaviruses, including the severe acute respiratory syndrome coronavirus (SARS-CoV), are enveloped viruses characterized by their single-stranded, positive-sense RNA genome and helical nucleocapsid structure. The hallmark of these viruses is their club-shaped spike (S) glycoproteins that protrude from the viral envelope, facilitating attachment to host cells. Typically, coronaviruses infect the upper respiratory tract, often causing mild or asymptomatic disease. However, certain strains like...

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相关实验视频

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针对SARS-Cov-2的工程功能优化吸收体,以阻止尖峰-ACE2相互作用和吸收传感器检测.

Xiangdong Lai1, Weiwei Zhao2, Lihua Jiang3

  • 1State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.

Materials today. Bio
|July 11, 2025
PubMed
概括

这项研究引入了一种新的策略,使用外核酶III (Exo III) 消化和in silico模拟来设计高亲和度体. 这种方法优化了APTAMER用于检测SARS-CoV-2尖端蛋白 (S1) 并改善了APTASENSOR性能.

关键词:
适应器优化优化方法适用于传感器.外核酶III消化过程中的消化.在模拟中.不活化的病毒检测检测器在SARS-CoV-2突发性增长.

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科学领域:

  • 生物技术是生物技术.
  • 分子生物学分子生物学
  • 纳米技术纳米技术

背景情况:

  • 对阿普坦体结构-功能关系和形状动态的有限理解阻碍了阿普坦体工程.
  • 开发具有定义结构的高 afinity 体对于先进的应用至关重要.

研究的目的:

  • 通过使用EXO III消化和in silico模拟,为aptamer工程提出一种新的优化策略.
  • 为了澄清aptamer-target复合体的3D结构和形状动态.
  • 为SARS-CoV-2尖端蛋白 (S1) 开发一个高亲和度的受体,并构建一个功能性的受体传感器.

主要方法:

  • 结合的外核酶III (Exo III) 消化与在基模拟以优化体.
  • 对SARS-CoV-2 S1进行突变和截断,以创建衍生品.
  • 制造了一种吸觉传感器,使用一种添加的化化胺基基-8 (NZIF-8) 框架,加载了罗丹因 (Rho) 和优化的吸觉体 (Seq3).

主要成果:

  • 开发了一种优化的阿巴酶 (Seq3),对S1有较高的亲和力,并改善了S1-血管酶转化酶2 (ACE2) 相互作用的阻断.
  • 证明了SELEX后战略对功能性胺体获取的有效性.
  • 制造的胃口传感器 (NZIF-8-Rho-Apt) 在检测刺样本中的非活化SARS-CoV-2中表现出色.

结论:

  • 结合的EXO III消化和in silico模拟策略对于设计高亲和度和功能性体是有效的.
  • 这种方法有助于阐明aptamer-target复杂结构和形状动态.
  • 开发的吸食传感器为检测非活化病毒提供了一个有前途的工具.