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相关概念视频

Downstream Processing01:29

Downstream Processing

Downstream processing begins once fermentation is complete and involves a series of steps to recover and purify products such as acids, vitamins, antibiotics, or proteins.Cell HarvestingFor example, for intracellular protein-based products, the first step is harvesting the cells. This is typically achieved using centrifugation or filtration to separate the cells from the liquid phase.Cell Disruption for Intracellular ProductsIf the target product is intracellular, the harvested cells must be...

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相关实验视频

Updated: Jul 2, 2026

Large-scale Production of Recombinant RNAs on a Circular Scaffold Using a Viroid-derived System in Escherichia coli
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通过超过来净化循环RNA.

Karen Guillen-Cuevas1, Xiaoming Lu1, Marc R Birtwistle1

  • 1Department of Chemical and Biomolecular Engineering, Clemson University, 127 Earle Hall, 206 S. Palmetto Blvd., Clemson, SC 29634 USA.

Separation and purification technology
|September 19, 2025
PubMed
概括
此摘要是机器生成的。

超过有效地净化循环RNA (circRNA),克服线性信使RNA (mRNA) 的局限性. 这种方法实现了高纯度和产量,为可扩展的circRNA治疗制造铺平了道路.

关键词:
基因表达的RNA基因表达产生RNA生产RNA的过程.RNA净化方法的方法循环RNA疗法的循环RNA疗法.治疗性的RNA.

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相关实验视频

Last Updated: Jul 2, 2026

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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
  • 生物化学 生物化学

背景情况:

  • 使者RNA (mRNA) 疫苗激起了人们对mRNA疗法的兴趣.
  • 由于酶降解,线性mRNA是不稳定的,与更稳定的循环RNA (circRNA) 不同.
  • 目前的方法很难从在体外转录 (IVT) 过程中产生的线性污染物中净化circRNA.

研究的目的:

  • 为了研究超过来净化来自IVT反应的编码蛋白质的circRNA.
  • 评估使用聚硫膜用于circRNA分离的可行性.
  • 通过超过来确定circRNA净化最佳操作条件.

主要方法:

  • 测量了circRNA,线性前体RNA和切割RNA的选系数,使用具有不同分子量切割线 (30-300 kDa) 的膜.
  • 分析了基于透流量的分离性能.
  • 估计RNA分离的临界流量,并确定了合适的操作参数.

主要成果:

  • 通过超过实现了86%的纯度和>50%的circRNA产量.
  • 与尺寸排除高性能液体染色学 (SE-HPLC) 相比,表现出更高的性能,其纯度为41%,收益率为45%.
  • 确定了用于circRNA净化的最佳超过条件.

结论:

  • 超过是一种高效和优越的方法,可以在研究规模上净化circRNA.
  • 超过在生物处理中的可扩展性支持其大规模circRNA治疗制造的潜力.
  • 这项研究为通过改进的净化技术推进基于circRNA的治疗方法提供了基础.