尼古丁胺胺单核酸的高效转化基于多酶级联反应限制的阐明
Fengrui Yu1, Hongwen Li1, Xianglong Li1
1MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, China.
Biotechnology journal
|February 24, 2025
概括
尼古丁胺胺单核酸 (NMN) 产量通过使用一种新的多酶级联系统进行了优化. 这种方法克服了中间抑制,显著提高了NMN产量,用于潜在的抗衰老和代谢障碍治疗.
科学领域:
- 生物化学 生物化学
- 酶学 是一种酶学.
- 代谢工程是代谢工程.
背景情况:
- 尼古丁胺单核酸 (NMN) 是尼古丁胺腺素二核酸 (NAD) 的前体,对细胞过程至关重要.
- 保持NAD水平与缓解衰老和代谢障碍有关.
- 由于中间产品的抑制,NMN的酶合成面临限制,阻碍了高效的生产.
研究的目的:
- 开发一种高效的多酶级联系统,用于从D-ribose中合成NMN.
- 量化和克服NMN级联反应中的中间产品抑制.
- 为了促进大规模和具有成本效益的NMN制造.
主要方法:
- 设计了一种三并反应的多酶级联系统.
- 包含一个腺三酸盐 (ATP) 再生系统和酸盐酶 (PPase).
- 量化中间抑制,确定关键的腺二酸盐 (ADP) 度和基酸盐 (PRPP) 水解速率.
主要成果:
- 通过优化级联系统实现了81.3%的NMN产量.
- 确定了0.08μM的关键ADP度 (0.5mM) 抑制基酸盐合成酶 (Prs).
- 证明高活性尼古丁胺胺酸转移酶 (Nampt) 与PRPP水解竞争,增强NMN产量.
结论:
- 开发的多酶级联系统通过克服中间抑制,有效地合成NMN.
- 整合ATP再生和PPase显著改善了NMN产量.
- 这一策略使NMN的可扩展和高效的制造成为可能,支持其治疗潜力.
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