Dataset Information

Construction of an artificial system for ambrein biosynthesis and investigation of some biological activities of ambrein.

ABSTRACT: Ambergris, a sperm whale metabolite, has long been used as a fragrance and traditional medication, but it is now rarely available. The odor components of ambergris result from the photooxidative degradation of the major component, ambrein. The pharmacological activities of ambergris have also been attributed to ambrein. However, efficient production of ambrein and odor compounds has not been achieved. Here, we constructed a system for the synthesis of ambrein and odor components. First, we created a new triterpene synthase, "ambrein synthase," for mass production of ambrein by redesigning a bacterial enzyme. The ambrein yields were approximately 20 times greater than those reported previously. Next, an efficient photooxidative conversion system from ambrein to a range of volatiles of ambergris was established. The yield of volatiles was 8-15%. Finally, two biological activities, promotion of osteoclast differentiation and prevention of amyloid β-induced apoptosis, were discovered using the synthesized ambrein.

SUBMITTER: Yamabe Y

PROVIDER: S-EPMC7661701 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Construction of an artificial system for ambrein biosynthesis and investigation of some biological activities of ambrein.

Yamabe Yota Y Kawagoe Yukina Y Okuno Kotone K Inoue Mao M Chikaoka Kanako K Ueda Daijiro D Tajima Yuko Y Yamada Tadasu K TK Kakihara Yoshito Y Hara Takashi T Sato Tsutomu T

Scientific reports 20201112 1

Ambergris, a sperm whale metabolite, has long been used as a fragrance and traditional medication, but it is now rarely available. The odor components of ambergris result from the photooxidative degradation of the major component, ambrein. The pharmacological activities of ambergris have also been attributed to ambrein. However, efficient production of ambrein and odor compounds has not been achieved. Here, we constructed a system for the synthesis of ambrein and odor components. First, we creat ...[more]

PMID: 33184314

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Project description:BACKGROUND: Methylated resveratrol analogs show similar biological activities that are comparable with those of the resveratrol. However, the methylated resveratrol analogs exhibit better bioavailability as they are more easily transported into the cell and more resistant to degradation. Although these compounds are widely used in human health care and in industrial materials, at present they are mainly obtained by extraction from raw plant sources. Accordingly their production can suffer from a variety of economic problems, including low levels of productivity and/or heterogeneous quality. On this backdrop, large-scale production of plant metabolites via microbial approaches is a promising alternative to chemical synthesis and extraction from plant sources. RESULTS: An Escherichia coli system containing an artificial biosynthetic pathway that produces methylated resveratrol analogues, such as pinostilbene (3,4'-dihydroxy-5-methoxystilbene), 3,5-dihydroxy-4'-methoxystilbene, 3,4'-dimethoxy-5-hydroxystilbene, and 3,5,4'-trimethoxystilbene, from simple carbon sources is developed. These artificial biosynthetic pathways contain a series of codon-optimized O-methyltransferase genes from sorghum in addition to the resveratrol biosynthetic genes. The E. coli cells that harbor pET-opTLO1S or pET-opTLO3S produce the one-methyl resveratrol analogues of 3,5-dihydroxy-4'-methoxystilbene and pinostilbene, respectively. Furthermore, the E. coli cells that harbor pET-opTLO13S produce 3,5-dihydroxy-4'-methoxystilbene, bis-methyl resveratrol (3,4'-dimethoxy-5-hydroxystilbene), and tri-methyl resveratrol (3,5,4'-trimethoxystilbene). CONCLUSIONS: Our strategy demonstrates the first harness microorganisms for de novo synthesis of methylated resveratrol analogs used a single vector system joined with resveratrol biosynthetic genes and sorghum two resveratrol O-methyltransferase genes. Thus, this is also the first report on the production of the methylated resveratrol compounds bis-methyl and tri-methyl resveratrol (3,4'-dimethoxy-5-hydroxystilbene and 3,5,4'-trimethoxystilbene) in the E. coli culture. Thus, the production of the methylated resveratrol compounds was performed on the simple E. coli medium without precursor feeding in the culture.

Dataset Information

Construction of an artificial system for ambrein biosynthesis and investigation of some biological activities of ambrein.

Publications

Construction of an artificial system for ambrein biosynthesis and investigation of some biological activities of ambrein.

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