选择内源性促进剂,以改善精神分裂症中烯的生物合成
Fang-Tong Nong1, Zi-Xu Zhang1, Lu-Wei Xu1
1School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Qixia District, Nanjing, China.
Biotechnology journal
|October 9, 2024
概括
微生物发酵增强了素 (C30H50) 的产生. 研究人员设计了Schizochytrium sp. 这种植物. 使用新型促进剂过度表达烯合成酶 (SQS),达到2.8倍增加烯产量.
科学领域:
- 生物技术是生物技术.
- 代谢工程是代谢工程.
- 微生物发酵 微生物发酵
背景情况:
- 斯夸伦 (C30H50) 具有宝贵的抗癌和抗氧化特性,使其对食品和制药行业具有重要意义.
- 天然素来源有限,这引发了人们对微生物发酵的兴趣,以实现可持续生产.
- 精神分裂 (Schizochytrium sp.) 是一种疾病. 可以通过美酸 (MVA) 途径生物合成烯,但关键的基因调节元素尚不清楚.
研究的目的:
- 识别和表征内源性促进器用于基因修饰在斯基索奇特菌种中的基因修饰.
- 通过过度表达合成酶 (SQS) 基因来增强烯生物合成.
- 为了优化发酵条件以最大限度地提高烯产量.
主要方法:
- 来自Schizochytrium sp.的13种内源性促进体的克隆和表征. 转录组数据.转录组数据.
- 基因工程的思索菌 sp. 的基因工程. 通过使用精选的促进体来过度表达SQS基因.
- 优化发酵介质成分,包括源和微量元素.
- 在120小时内进行料批发发酵,以评估素产量.
主要成果:
- 开发了一种转型菌株SQS-3626,与野生类型相比,斯卡烯产量增加了2.8倍.
- 优化的发酵条件导致SQS-3626菌株的最终累积烯产量为2.2g/L.
- 确定有效的促进剂,以增强MVA通路中的基因表达.
结论:
- 这项研究成功地确定了新型促销者,并设计了一种Schizochytrium sp. 对于显著改善的烯生产而言.
- 优化的发酵策略进一步提高了烯的产量,达到2.2g/L.
- 这项工作为大规模,具有成本效益的微生物生产烯提供了基础.
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