氧硫黄黄色A的生物合成途径的解
Zi-Long Wang1, Hao-Tian Wang1, Guowei Chang2
1State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing, 100191, China.
Nature communications
|May 14, 2025
概括
研究人员阐明了Hydroxysafflor黄色A (HSYA) 的生物合成,这是一种潜在的中风治疗方法,完全来自红杉. 他们确定了四种关键酶及其协调的功能,使HSYA的有效生产成为可能.
科学领域:
- 植物生物化学 植物生物化学
- 自然产品的生物合成.
- 药品化学 药品化学 是一个
背景情况:
- 酸黄A (HSYA) 是一种独特的酸二-C-糖化物,在红杉 (Carthamus tinctorius) 中发现.
- HSYA是治疗急性缺血性中风的试验药物,但其生物合成途径在很大程度上仍未知.
- 了解HSYA生物合成对于其潜在的治疗应用和高效生产至关重要.
研究的目的:
- 为了识别和表征涉及Hydroxysafflor黄色A (HSYA) 生物合成的关键酶在Carthamus tinctorius.
- 为了阐明HSYA的完整生物合成途径.
- 为HSYA的可持续和高效生产提供基础.
主要方法:
- 酶表征:确定了CtF6H,CtCHI1,CtCGT和Ct2OGD1,并分析了它们的功能.
- 基因功能验证:在C. tinctorius中使用病毒诱导的基因沉默 (VIGS) 和在Nicotiana benthamiana中使用de novo生物合成.
- 在体外和半合成方法:进行了酶测定和基于酵母的半合成,以确认HSYA的生产.
主要成果:
- 四个关键酶 (CtF6H,CtCHI1,CtCGT,Ct2OGD1) 的特征,与Ct2OGD1和CtCGT显示一起工作,以产生HSYA.
- 发现这四个基因的同时高表达和flavanone 2-hydroxylase (F2H) 基因的缺失对于HSYA生物合成至关重要.
- 在N. benthamiana中成功的HSYA新生合成和在酵母中成功的半合成证明了该途径的可行性.
结论:
- 已经阐明了酸黄A (HSYA) 的生物合成途径,涉及四个关键酶.
- 红杉中HSYA的独特存在是由这些生物合成基因的特定组合和表达解释的.
- 这项研究为绿色和高效的医用HSYA生产奠定了基础.
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