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1.上海中医药大学中药学院中药学教研室(上海 201203)
2.上海中医药大学创新中药研究院手性药物研究中心(上海 201203)
蔡奕泽,男,硕士研究生,主要从事中药活性分子的生物合成研究
王海颖,教授;E-mail: wanghaiying_7@hotmail.com
收稿日期:2025-04-07,
纸质出版日期:2025-08-10
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蔡奕泽,赵群飞,王海颖.药用真菌乌灵参黑色素生物合成研究[J].上海中医药杂志,2025,59(8):14-22.
CAI Yize,ZHAO Qunfei,WANG Haiying.Study on biosynthesis of melanin in medicinal fungus Wulingshen[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(8):14-22.
蔡奕泽,赵群飞,王海颖.药用真菌乌灵参黑色素生物合成研究[J].上海中医药杂志,2025,59(8):14-22. DOI: 10.16305/j.1007-1334.2025.z20250407007.
CAI Yize,ZHAO Qunfei,WANG Haiying.Study on biosynthesis of melanin in medicinal fungus Wulingshen[J].Shanghai Journal of Traditional Chinese Medicine,2025,59(8):14-22. DOI: 10.16305/j.1007-1334.2025.z20250407007.
目的
2
解析珍稀药食两用真菌乌灵参黑色素的生物合成机制,并推动其开发应用。
方法
2
采用多组学整合分析筛选潜在黑色素生物合成基因簇(
mel
),利用合成生物学技术构建米曲霉异源表达系统,实现基因簇功能重构,结合高效液相色谱-质谱联用(HPLC-MS)与单晶X射线衍射技术对代谢产物进行分离鉴定。
结果
2
首次在乌灵参中鉴定出1,8-二羟基萘(1,8-DHN)型黑色素合成基因簇(
mel
),并通过异源表达成功重构其生物合成途径。从米曲霉转化株中分离获得关键中间体小柱孢酮[(
R
)-Scytalone],经晶体结构解析(CCDC 2440681)确证其立体构型。
结论
2
本研究初步阐明了乌灵参中1,8-DHN型黑色素的生物合成机制。
Objective
2
To elucidate the biosynthesis mechanism of melanin in the rare medicinal and edible fungus Wulingshen (
Xylaria
spp.) and promote its development and application.
Methods
2
Potential melanin biosynthesis gene clusters (
mel
) were screened using multi-omics integrated analysis. A heterologous expression system in
Aspergillus oryzae
was constructed through synthetic biology techniques to functionally reconstruct the gene cluster. Metabolites were isolated and identified via high-performance liquid chromatography-mass spectrometry (HPLC-MS) and single-crystal X-ray diffraction.
Results
2
The 1,8-dihydroxynaphthalene (1,8-DHN)-type melanin biosynthesis gene cluster (
mel
) was identified for the first time in Wulingshen. The biosynthetic pathway was successfully reconstructed through heterologous expression. The key intermediate (
R
)-Scytalone was isolated from
A. oryzae
transformants, and its stereochemical configu
ration was confirmed by crystal structure analysis(CCDC 2440681).
Conclusion
2
This study preliminarily clarified the biosynthesis mechanism of 1,8-DHN-type melanin in Wulingshen.
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