在Pichia pastoris中表达的优化Codon Bovine III型干扰素的生物活性
Ran An1, Runxiang Zhang2, Yongli Guo3
1Heilongjiang Provincial Key Laboratory of Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
Viruses
|May 27, 2023
概括
研究人员开发了牛类干扰素-lambda 3 (boIFN-λ3) 和一种突变物 (boIFN-λ3V18M) 用于抗病毒疗法. 两者都显示出强大的抗病毒和抗增殖活性,为未来的治疗提供了洞察力.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 第三类干扰素 (IFN-λs) 对于抗病毒防御和免疫调节至关重要.
- 牛干扰素-lambda 3 (boIFN-λ3) 有潜在的治疗应用.
- 优化基因表达和蛋白质生产是开发生物制药的关键.
研究的目的:
- 为了合成和表达子优化的牛干扰素-lambda (boIFN-λ) 基因片段.
- 通过SOE PCR开发一个突变的版本,boIFN-λ3V18M,通过SOE PCR.
- 评估boIFN-λ3和boIFN-λ3V18M的生物活性和治疗潜力.
主要方法:
- 子优化和boIFN-λ的基因合成.
- 通过重叠扩展PCR (SOE PCR) 进行基因放大.
- 在 *Pichia pastoris* 中的重组蛋白表达,净化和表征.
- 抗病毒和抗增殖试验,包括稳定性和细胞毒性试验.
主要成果:
- 在Pichia pastoris*中实现了boIFN-λ3和boIFN-λ3V18M的高水平细胞外可溶性表达.
- 纯化的重组蛋白质产生1.5g/L (boIFN-λ3) 和0.3g/L (boIFN-λ3V18M) 的高纯度.
- boIFN-λ3V18M表现出强大的抗病毒活性 (>106 U/mg) 和抗增殖作用,没有细胞毒性.
- 这两种蛋白质都表现出类似的生物活性,boIFN-λ3V18M降低了糖化.
结论:
- 成功开发和大规模生产重组boIFN-λ3和boIFN-λ3V18M.
- boIFN-λ3V18M显示出强大的抗病毒和抗增殖特性,与野生类型相比.
- 这些发现提供了对干扰素-lambda机制的见解,并支持治疗开发.
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