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Salama IM, Eliwa NE, Mohamed MH. Effect of UV-A on vincristine biosynthesis and related peroxidase isozyme changes in Catharanthus roseus. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2020. [DOI: 10.1080/16878507.2020.1777658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- I. M. Salama
- Natural Products Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - N. E. Eliwa
- Natural Products Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - M. H. Mohamed
- Natural Products Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
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Bruňáková K, Čellárová E. Modulation of anthraquinones and phloroglucinols biosynthesis in Hypericum spp. by cryogenic treatment. J Biotechnol 2017; 251:59-67. [DOI: 10.1016/j.jbiotec.2017.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/17/2017] [Accepted: 04/12/2017] [Indexed: 02/01/2023]
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Asano M, Harada K, Umeno A, Hirata K. Optimization of 3', 4'-Anhydrovinblastine Synthesis in vitro Using Crude Extracts of Catharanthus roseus Irradiated with Near-Ultraviolet Light. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dimeric indole alkaloids (DIAs), such as vinblastine and vincristine, found in Catharanthus roseus are used clinically as antitumor drugs. A stable supply of DIAs is desired because these alkaloids are very expensive due to their low abundance in plants. A coupling reaction between catharanthine (CAT) and vindoline (VID) is the rate-limiting step of DIAs biosynthesis in planta. 3', 4'-Anhydrovinblastine (AVLB), the product of the coupling reaction, is the precursor of CAT and VID. Therefore, an effective AVLB production system is greatly required. Previously we found that the coupling reaction of CAT and VID to produce AVLB occurred in the presence of flavin mononucleotide and manganese ion (II) by irradiation with near-ultraviolet light at a peak of 370 nm without the presence of any enzyme. In this study, we investigated the effects of organic solvents on this non-enzymatic reaction. We show that the addition of 10% methanol to the reaction mixture permitted the preparation of a highly concentrated substrate solution, resulting in a high yield of AVLB by the coupling reaction. Conditions for the coupling reaction in 10% methanol solution were optimized. We also confirmed that the coupling reaction could occur in crude extracts of C. roseus obtained by organic solvent extraction. These findings suggest a method to produce DIAs on a large scale with reduced production costs.
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Affiliation(s)
- Mamiko Asano
- Applied Environmental Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
- Osaka University of Pharmaceutical Sciences, 4-20-1, Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Kazuo Harada
- Applied Environmental Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Akiko Umeno
- Applied Environmental Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kazumasa Hirata
- Applied Environmental Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6, Yamadaoka, Suita, Osaka, 565-0871, Japan
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