相关实验视频
Updated: Jun 26, 2026

10:55
Rescue of Recombinant Newcastle Disease Virus from cDNA
Published on: October 11, 2013
19.3K
干扰素抑制剂增加了HEK293细胞中rAAV的产生
Yongdan Wang1, Qiang Fu2, Sha Sha1
1Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA 01854, United States.
Journal of biotechnology
|January 17, 2025
概括
阻断干扰素信号通路可以增强复合腺相关病毒 (rAAV) 的产生. 抑制剂药物显著增加了HEK293细胞中的病毒基因组和载体生产力,改善了基因治疗的制造.
科学领域:
- 生物技术是生物技术.
- 基因治疗 基因治疗
- 病毒载体制造业 病毒载体制造业
背景情况:
- 再组合腺相关病毒 (rAAVs) 是基因治疗的关键载体.
- 目前的rAAV制造方法在满足商业需求方面面临挑战.
- 宿主细胞的反应,包括抗病毒和内质网膜应激,阻碍了rAAV的产生.
研究的目的:
- 研究调节抗病毒反应对rAAV产生的影响.
- 通过干扰素路径抑制来增强rAAV产量的小分子的识别.
主要方法:
- 选针对干扰素信号通路 (TBK,IKK2,JAK1) 的小分子抑制剂.
- 通过短暂转染,在RAAV产生之前用抑制剂对HEK293细胞进行治疗.
- 病毒基因组标位,载体生产率和特异性生产率的量化.
主要成果:
- 干扰素信号通路的抑制剂 (BX795,TPCA-1,Cyt387,ruxolitinib) 显著增强了rAAV的产生.
- 观察到生产率增加了多达2倍,具体生产率增加了6倍.
- 虽然可活细胞密度下降,但载体产量有所改善,表明制造效率提高.
结论:
- 调节宿主细胞的抗病毒反应是改善rAAV制造的可行策略.
- 干扰素通路抑制剂提供了一个可扩展的方法来增加治疗应用的rAAV产量.
- 可能需要进一步优化,因为改进在不同的媒体上有所不同.
相关概念视频
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
Eukaryotic Transcription Inhibitors
Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
Inhibitors of Viral Protein Synthesis
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Inhibitors Of Virion Release
Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
Inhibitors of Virion Maturation and Assembly
As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...

