在与Komagataella phaffii进行连续培养时,去压缩的重组酶生产的可能性和缺点
Mihail Besleaga1, Katharina Ebner2, Anton Glieder2
1Institute of Chemical, Environmental and Bioscience Engineering, Research Division Integrated Bioprocess Development, Vienna, Austria.
Frontiers in bioengineering and biotechnology
|March 25, 2025
概括
在Komagataella phaffii (K. phaffii) 中,可减压的促进剂使得无甲醇的重组蛋白质生产成为可能. 然而,长期种植引发了降低生产率的伪生长,限制了连续生产潜力.
科学领域:
- 生物技术是生物技术.
- 微生物工程 微生物工程
- 蛋白质生产 蛋白质生产
背景情况:
- 使用Komagataella phaffii (K. phaffii) 的依赖甲醇的料批次种植是重组蛋白质生产的标准.
- 可减压促进剂为表达K. phaffii. 中复杂蛋白质提供了无甲醇替代品.
研究的目的:
- 在连续的K. phaffii种植中使用可退缩的双向促进体系统研究重组酶 (UPO) 表达.
- 确定特定生长速度和时间对伪菌生长和重组蛋白质生产率的影响.
主要方法:
- 进行了K. phaffii的化学定位和减速定位培养,使用了可消压促销器系统.
- 监测了特定生长率,伪形形成和重组向酶 (UPO) 的生产力.
- 评估了脱压的条件和伪生长的潜力.
主要成果:
- 再组合的UPO表达和脱压是以0.11h-1的增长率实现的,没有伪生长.
- 在这些条件下长时间的培养 (超过五次居住) 诱导了伪形的形成.
- 发现伪的生长取决于生长速度和培养时间.
结论:
- 连续种植K. phaffii与UPO生产的derepressible促进剂受限于时间和生长速度依赖的伪形形成.
- 降速机种植是一种合适的选方法,用于优化使用可降压促进剂的连续生产条件.
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