1
|
Kollerov V, Tarlachkov S, Shutov A, Kazantsev A, Donova M. Identification of a Gene Encoding a New Fungal Steroid 7-Hydroxylase and Its Functional Characterization in Pichia pastoris Yeast. Int J Mol Sci 2023; 24:17256. [PMID: 38139084 PMCID: PMC10744122 DOI: 10.3390/ijms242417256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
The hydroxylation of steroids in the C7β position is one of the rare reactions that allow the production of value-added precursors in the synthesis of ursodeoxycholic acid and other pharmaceuticals. Recently, we discovered this activity in the ascomycete Curvularia sp. VKM F-3040. In this study, the novel gene of 7-hydroxylase (P450cur) was identified as being heterologously expressed and functionally characterized in Pichia pastoris. Transcriptome data mining and differential expression analysis revealed that 12 putative genes in Curvularia sp. mycelia significantly increased their expression in response to dehydroepiandrosterone (DHEA). The transcriptional level of the most up-regulated cytochrome P450cur gene was increased more than 300-fold. A two-gene construct with a candidate P450cur gene and the gene of its natural redox partner, NADPH-cytochrome P450 reductase (CPR), which is interconnected by a T2A element, was created. Using this construct, recombinant P. pastoris strains co-expressing fungal P450cur and CPR genes were obtained. The functional activity of the recombinant P450cur was studied in vivo during the bioconversion of androstane steroids. The fungal 7-monooxygenase predominantly catalyzed the 7β-hydroxylation of androstadienedione (ADD), DHEA, and androstenediol, whereas 1-dehydrotestosterone was hydroxylated by P450cur mainly at the C7-Hα position. To our knowledge, this is the first report of a recombinant yeast capable of catalyzing the 7α/β-hydroxylation of ADD and DHEA.
Collapse
Affiliation(s)
- Vyacheslav Kollerov
- Federal Research Center «Pushchino Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290 Pushchino, Russia; (S.T.); (A.S.); (M.D.)
| | - Sergey Tarlachkov
- Federal Research Center «Pushchino Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290 Pushchino, Russia; (S.T.); (A.S.); (M.D.)
| | - Andrei Shutov
- Federal Research Center «Pushchino Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290 Pushchino, Russia; (S.T.); (A.S.); (M.D.)
| | - Alexey Kazantsev
- Chemical Department, Moscow State University, GSP-1, Leninskiye Gori, 1, 119991 Moscow, Russia;
| | - Marina Donova
- Federal Research Center «Pushchino Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290 Pushchino, Russia; (S.T.); (A.S.); (M.D.)
| |
Collapse
|
2
|
Josefsen KD, Nordborg A, Le SB, Olsen SM, Sletta H. Bioconversion of Phytosterols into Androstenedione by Mycolicibacterium. Methods Mol Biol 2023; 2704:245-267. [PMID: 37642849 DOI: 10.1007/978-1-0716-3385-4_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
The chapter describes the bioconversion of phytosterols into androstenedione (AD) by Mycolicibacterium spp. in shake flasks and fermenters, as well as LC-MS-based methods for analysis of phytosterols and steroid products. Phytosterols are derived as by-products of vegetable oil refining and manufacture of wood pulp. They contain the same four-ring nucleus as steroids and may be converted to high-value steroids by removing the sidechain at C17 and minor changes at other sites in the ring structure. Many bacteria, including Mycolicibacterium spp., can degrade phytosterols. Mutants of Mycolicibacterium spp. unable of ring cleavage can, when growing on phytosterols, accumulate the steroid intermediates androstenedione (AD) and androstadienedione (ADD). The practical challenge with microbial conversion of phytosterols to steroids is that both the substrate and the product are virtually insoluble in water. In addition, some steroids, notably ADD, may be toxic for the cells. Two main strategies have been employed to overcome this challenge: the use of two-phase systems and the addition of chemically modified cyclodextrins. The latter method is used here. Defined cultivation and bioconversion media for both shake flask and fermenter are given, as well as hints how to minimize the practical problems due to the water-insoluble phytosterol. Sampling, sample extraction, and quantification of substrates and products using LC-MS analysis are described.
Collapse
Affiliation(s)
| | - Anna Nordborg
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Simone Balzer Le
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway.
| | - Silje Malene Olsen
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| | - Håvard Sletta
- Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway
| |
Collapse
|
3
|
Kuru A, Yildirim K. Microbial conversion of pregnenolone by some filamentous fungi. BIOCATAL BIOTRANSFOR 2022. [DOI: 10.1080/10242422.2022.2150967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ali Kuru
- Department of Chemistry, Faculty of Sciences, Sakarya University, Sakarya, Turkey
| | - Kudret Yildirim
- Department of Chemistry, Faculty of Sciences, Sakarya University, Sakarya, Turkey
| |
Collapse
|
4
|
Kollerov V, Donova M. Ursodeoxycholic acid production by Gibberella zeae mutants. AMB Express 2022; 12:105. [PMID: 35939125 PMCID: PMC9360310 DOI: 10.1186/s13568-022-01446-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 08/03/2022] [Indexed: 11/10/2022] Open
Abstract
Ursodeoxycholic acid (UDCA) is a highly demanded pharmaceutical steroid widely used in medicine. An ascomycete Gibberella zeae VKM F-2600 is capable of producing UDCA by 7β-hydroxylation of lithocholic acid (LCA). The present study is aimed at the improvement of the fungus productivity. The original procedures for the protoplast obtaining followed by UV mutagenesis and screening of ketoconazole-resistant mutant clones have been applied. The highest yield of G. zeae protoplasts was obtained when using the mycelium in the active growth phase, ammonium chloride as an osmotic stabilizer and treatment of the fungal cells by the lytic enzymes cocktail from Trichoderma hurzanium. The conditions for effective protoplast regeneration and the UV-mutagenesis were found to provide 6–12% survival rate of the protoplasts with superior number of possible mutations. Three of 27 ketoconazole-resistant mutant clones obtained have been selected due to their increased biocatalytic activity towards LCA. The mutant G. zeae M23 produced 26% more UDCA even at relatively high LCA concentration (4 g/L) as compared with parent fungal strain, and the conversion reached 88% (w/w). The yield of UDCA reached in this study prefers those ever reported. The results contribute to the knowledge on ascomycete mutagenesis, and are of importance for biotechnological production of value added cholic acids. Efficient procedures for production and regeneration of Gibberella zeae protoplasts were determined. Fungal mutants were obtained with elevated 7β-hydroxylase activity. Mutant G. zeae M23 almost fully converts LCA (4 g/L) to UDCA.
Collapse
Affiliation(s)
- Vyacheslav Kollerov
- Federal Research Center Pushchino Center for Biological Research of the Russian Academy of Sciences, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow Region, Russia.
| | - Marina Donova
- Federal Research Center Pushchino Center for Biological Research of the Russian Academy of Sciences, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow Region, Russia
| |
Collapse
|
5
|
Valsalan R, Mathew D, Devaki G. Draft genome of Gongronella butleri reveals the genes contributing to its biodegradation potential. J Genet Eng Biotechnol 2022; 20:74. [PMID: 35583842 PMCID: PMC9117579 DOI: 10.1186/s43141-022-00351-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/02/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Gongronella butleri is a fungus with many industrial applications including the composting of solid biowaste. Kerala Agricultural University, India, has developed a microbial consortium of which GbKAU strain of G. butleri is a major component. Even with great industrial significance, genome of this fungus is not published, and the genes and pathways contributing to the applications are not understood. This study had the objective to demonstrate the solid biowaste decomposing capability of the strain, to sequence and annotate the genome, and to reveal the genes and pathways contributing to its biodegradation potential. RESULTS Strain GbKAU of G. butleri isolated and purified from the organic compost was found to produce higher levels of laccase and amylase, compared to Bacillus subtilis which is being widely used in biosolid waste management. Both were shown to be equally efficient in the in vivo composting capabilities. Whole genome sequencing has given ~11 million paired-end good quality reads. De novo assembly using dual-fold approach has yielded 44,639 scaffolds with draft genome size of 29.8 Mb. A total of 11,428 genes were predicted and classified into 359 groups involved in diverse pathways, of which 14 belonged to the enzymes involved in the degradation of macromolecules. Seven previously sequenced strains of the fungus were assembled and annotated. A direct comparison showed that the number of genes present in those strains was comparable to our strain, while all the important biodegrading genes were conserved across the genomes. Gene Ontology analysis had classified the genes according to their molecular function, biological process, and cellular component. A total of 104,718 SSRs were mined and classified to mono- to hexa-nucleotide repeats. The variant analysis in comparison with the closely related genus Cunninghamella has revealed 1156 variants. CONCLUSIONS Apart from demonstrating the biodegradation capabilities of the GbKAU strain of G. butleri, the genome of this industrially important fungus was sequenced, de novo assembled, and annotated. GO analysis has classified the genes based on their functions, and the genes involved in biodegradation were revealed. Biodegradation potential, genome features in comparison with other strains, and the functions of the identified genes are discussed.
Collapse
Affiliation(s)
- Ravisankar Valsalan
- Bioinformatics Centre, Kerala Agricultural University, Thrissur, 680656, India
| | - Deepu Mathew
- Bioinformatics Centre, Kerala Agricultural University, Thrissur, 680656, India.
| | - Girija Devaki
- Department of Agricultural Microbiology, College of Agriculture, Kerala Agricultural University, Thrissur, 680656, India
| |
Collapse
|
6
|
Kollerov V, Shutov A, Kazantsev A, Donova M. Hydroxylation of pregnenolone and dehydroepiandrosterone by zygomycete Backusella lamprospora VKM F-944: selective production of 7α-OH-DHEA. Appl Microbiol Biotechnol 2021; 106:535-548. [PMID: 34939135 DOI: 10.1007/s00253-021-11737-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 12/04/2021] [Accepted: 12/11/2021] [Indexed: 02/05/2023]
Abstract
In this paper, we studied the transformation of two 3β-hydroxy-5-ene-steroids-pregnenolone and dehydroepiandrosterone (DHEA) by Backusella lamprospora VKM F- 944. The soil-dwelling zygomycete wild-type strain has been earlier selected during the screening and previously unexplored for this purpose. The fungus fully converted pregnenolone to form a mixture of axial 7α-hydroxy-pregnenolone and 7α,11α-dihydroxy-pregnenolone, while no metabolites with β-orientation of the hydroxyl group were detected. The pathway to 7α,11α-diOH-pregnenolone seems to include 7α-hydroxylation of 11α-hydroxylated derivative. The only product from DHEA was identified as 7α-hydroxy-DHEA. The structures of steroid metabolites were confirmed by HPLC, mass-spectrometry (MS), and 1H and 13C NMR analyses. Under the optimized conditions, the yield of 7α-OH-DHEA reached 94% (w/w) or over 14 g/L in absolute terms, even at high concentration of the substrate (DHEA) (15 g/L). To our knowledge, it is the highest yield of the value-added 7α-OH-DHEA reported so far. The results contribute to the knowledge of the diversity of the wild-type fungal strains capable of effective steroid hydroxylation. They could be applied for the production of allylic steroid 7α-alcohols that are widely used in medicine. KEY POINTS: • Zygomycete Backusella lamprospora actively hydroxylates 3β-hydroxy-5-en-steroids. • Axial 7α-hydroxylation is the preferable reaction by the strain towards pregnenolone and DHEA. • The strain selectively produces 7α-OH-DHEA even at high substrate concentrations (up to 15 g/L).
Collapse
Affiliation(s)
- Vyacheslav Kollerov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow region, Russia.
| | - Andrei Shutov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow region, Russia
| | - Alexey Kazantsev
- Chemical Department, Moscow State University, GSP-1, Leninskiye Gori, 1, Moscow, Russia
| | - Marina Donova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow region, Russia
| |
Collapse
|
7
|
Steroid modification by filamentous fungus Drechslera sp.: Focus on 7-hydroxylase and 17β-hydroxysteroid dehydrogenase activities. Fungal Biol 2021; 126:91-100. [PMID: 34930562 DOI: 10.1016/j.funbio.2021.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/27/2021] [Accepted: 11/01/2021] [Indexed: 11/24/2022]
Abstract
Fungal strain Drechslera sp. Ph F-34 was shown to modify 3-oxo- and 3-hydroxy steroids of androstane series to form the corresponding allylic 7-alcohols and 17β-reduced derivatives thus evidencing the presence of 7α-, 7β-hydroxylase and 17β-hydroxysteroid dehydrogenase (17β-HSD) activities. The growing mycelium predominantly hydroxylated androsta-1,4-diene-3,17-dione (ADD) at the 7β-position, while much lower 7α-hydroxylation was observed. Along with 7β-hydroxy-ADD and its corresponding 7α-isomer, their respective 17β-alcohols were produced. In this study, transformation of ADD, androst-4-en-17β-ol-3-one (testosterone, TS) and 3β-hydroxyandrost-5-en-17-one (dehydroepiandrosterone, DHEA) by resting mycelium of Drechslera sp. have been estimated in different conditions with regard to the inducibility and functionality of the 17β-HSD and 7-hydroxylase enzyme systems. Steroids of androstane, pregnane and cholane series were evaluated as inducers. The inhibitory analysis was provided using cycloheximide (CHX). Steroids were assayed using TLC and HPLC methods, and the structures were confirmed by mass-spectrometry, 1H and 13C NMR spectroscopy data. 17β-HSD of the mycelium constitutively reduced 17-carbonyl group of ADD and DHEA to form the corresponding 17β-alcohols, namely, androsta-1,4-diene-17β-ol-3-one (1-dehydro-TS), and androst-5-ene-3β,17β-diol. Production of the 7α- and 7β-hydroxylated derivatives depended on the induction conditions. The inducer effect relied on the steroid structure and decreased in the order: DHEA > pregnenolone > lithocholic acid. β-Sitosterol did not induce hydroxylase activity in Drechslera sp. CHX fully inhibited the synthesis of 7-hydroxylase in Drechslera mycelium thus providing selective 17-keto reduction. Results contribute to the diversity of steroid modifying enzymes in fungi and can be used at the development of novel biocatalysts for production of valuable steroid 7(α/β)- and 17β-alcohols.
Collapse
|
8
|
Zhou Y, Wang Y, Chen X, Feng J, Wang M, Wu Q, Zhu D. Modulating the active site lid of an alcohol dehydrogenase from Ralstonia sp. enabled efficient stereospecific synthesis of 17β-hydroxysteroids. Enzyme Microb Technol 2021; 149:109837. [PMID: 34311882 DOI: 10.1016/j.enzmictec.2021.109837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 05/20/2021] [Accepted: 05/30/2021] [Indexed: 10/21/2022]
Abstract
Enzymatic stereospecific reduction of 17-oxosteroids offers an attractive approach to access 17β-hydroxysteroids of pharmaceutical importance. In this study, by adjusting the flexibility of α6-helix at the substrate entrance of the alcohol dehydrogenase from Ralstonia sp. (RasADH), the catalytic activity toward the stereospecific 17β-reduction of androstenedione was improved without sacrifice of the enantioselectivity. Among the mutants, F205I and F205A exhibited up to 623- and 523-fold improvement in catalytic efficiency, respectively, towards a range of different 17-oxosteroids compared to the wild-type enzyme. The corresponding 17β-hydroxysteroids were prepared in optically pure form with high space-time productivity and isolated yields using F205I as the biocatalyst, indicating that these mutants are promising biocatalysts for this useful transformation. These results suggest that modulating the flexibility of the active site lid offers an effective approach to engineer alcohol dehydrogenase for accommodating bulky steroidal substrates.
Collapse
Affiliation(s)
- Yingying Zhou
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China; National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
| | - Yu Wang
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
| | - Xi Chen
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
| | - Jinhui Feng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China
| | - Min Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Qiaqing Wu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China.
| | - Dunming Zhu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, China.
| |
Collapse
|
9
|
Yildirim K, Kuru A, Yılmazer Keskin S, Ergin S. Microbial transformation of dehydroepiandrosterone (DHEA) by some fungi. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1844191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Kudret Yildirim
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, 54187, Turkey
| | - Ali Kuru
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, 54187, Turkey
| | - Semra Yılmazer Keskin
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, 54187, Turkey
| | - Sinan Ergin
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, 54187, Turkey
| |
Collapse
|
10
|
Zhou G, Peng C, Liu X, Chang F, Xiao Y, Liu J, Fang Z. Identification and Immobilization of an Invertase With High Specific Activity and Sucrose Tolerance Ability of Gongronella sp. w5 for High Fructose Syrup Preparation. Front Microbiol 2020; 11:633. [PMID: 32328053 PMCID: PMC7160231 DOI: 10.3389/fmicb.2020.00633] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/20/2020] [Indexed: 11/13/2022] Open
Abstract
Invertases catalyze the hydrolysis of sucrose into fructose and glucose and can be employed as an alternative in producing high fructose syrup. In this study, we reported the heterologous expression of an invertase gene (GspInv) of Gongronella sp. w5 in Komagataella pastoris. GspInv activity reached 147.6 ± 0.4 U/mL after 5 days of methanol induction. GspInv is invertase with a high specific activity of 2,776.1 ± 124.2 U/mg toward sucrose. GspInv showed high tolerance to sucrose (IC 5 0 = 1.2 M), glucose (IC 5 0 > 2 M), fructose (IC 5 0 = 1.5 M), and a variety of metal ions that make it an ideal candidate for high fructose syrup production. A carbohydrate-binding module was sequence-optimized and fused to the N-terminus of GspInv. The fusion protein had the highest immobilization efficiency at room temperature within 1 h adsorption, with 1 g of cellulose absorption up to 8,000 U protein. The cellulose-immobilized fusion protein retained the unique properties of GspInv. When applied in high fructose syrup preparation by using 1 M sucrose as the substrate, the sucrose conversion efficiency of the fused protein remained at approximately 95% after 50 h of continuous hydrolysis on a packed bed reactor. The fused protein can also hydrolyze completely the sucrose in sugarcane molasses. Our results suggest that GspInv is an unusual invertase and a promising candidate for high fructose syrup preparation.
Collapse
Affiliation(s)
- Gang Zhou
- School of Life Sciences, Anhui University, Hefei, China
- Anhui Key Laboratory of Modern Biomanufacturing, Hefei, China
- Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, China
| | - Can Peng
- School of Life Sciences, Anhui University, Hefei, China
- Anhui Key Laboratory of Modern Biomanufacturing, Hefei, China
- Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, China
| | - Xiaosa Liu
- School of Life Sciences, Anhui University, Hefei, China
- Anhui Key Laboratory of Modern Biomanufacturing, Hefei, China
- Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, China
| | - Fei Chang
- School of Life Sciences, Anhui University, Hefei, China
- Anhui Key Laboratory of Modern Biomanufacturing, Hefei, China
- Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, China
| | - Yazhong Xiao
- School of Life Sciences, Anhui University, Hefei, China
- Anhui Key Laboratory of Modern Biomanufacturing, Hefei, China
- Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, China
| | - Juanjuan Liu
- School of Life Sciences, Anhui University, Hefei, China
- Anhui Key Laboratory of Modern Biomanufacturing, Hefei, China
- Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, China
| | - Zemin Fang
- School of Life Sciences, Anhui University, Hefei, China
- Anhui Key Laboratory of Modern Biomanufacturing, Hefei, China
- Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, China
| |
Collapse
|
11
|
Kaunda JS, Zhang YJ. Two new 23S,26R-hydroxylated spirostanoid saponins from the fruits of Solanum indicum var. recurvatum. Steroids 2020; 153:108506. [PMID: 31586607 DOI: 10.1016/j.steroids.2019.108506] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/19/2019] [Accepted: 09/30/2019] [Indexed: 11/26/2022]
Abstract
Solanum indicum var. recurvatum, distributed mainly in Hekou, Simao and Menghai areas of Yunnan province, China, is characterized by stellate pubescent leaves with irregular lengths and oblong, short, and downwardly curved anthers. The original species, S. indicum, has been used as an anti-inflammatory, wound-healing agent, an analgesic, and for the treatment of rhinitis, cough, and breast cancer in Chinese folk medicine. The variety was chemically studied for the first time, leading to the isolation of two new rare 23S,26R-hydroxylated spirostanoid saponins, together with five known steroidal components, two of which the rare natural ketosteroids 6-hydroxyandrosta-1,4-diene-3,17-dione and rostadienedione have been isolated from the genus Solanum for the first time. Elucidation of the structures was accomplished by extensive 1D and 2D NMR, UV, and HRESIMS spectroscopic methods.
Collapse
Affiliation(s)
- Joseph Sakah Kaunda
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China
| | - Ying-Jun Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China.
| |
Collapse
|
12
|
Kollerov V, Shutov A, Kazantsev A, Donova M. Biotransformation of androstenedione and androstadienedione by selected Ascomycota and Zygomycota fungal strains. PHYTOCHEMISTRY 2020; 169:112160. [PMID: 31600654 DOI: 10.1016/j.phytochem.2019.112160] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/30/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
Filamentous fungi is a huge phylum of lower eukaryotes with diverse activities towards various substrates, however, their biocatalytic potential towards steroids remains greatly underestimated. In this study, more than forty Ascomycota and Zygomycota fungal strains of 23 different genera were screened for the ability to catalyze structural modifications of 3-oxo-androstane steroids, - androst-4-ene-3,17-dione (AD) and androsta-1,4-diene-3,17-dione (ADD). Previously unexplored for these purposes strains of Absidia, Acremonium, Beauveria, Cunninghamella, Doratomyces, Drechslera, Fusarium, Gibberella genera were revealed capable of producing in a good yield valuable 7α-, 7β-, 11α- and 14α-hydroxylated derivatives, as well as 17β-reduced and 1(2)-dehydrogenated androstanes. The bioconversion routes of AD and ADD were proposed based on the key intermediates identification and time courses of the bioprocesses. Six ascomycete strains were discovered to provide effective 7β-hydroxylation of ADD which has not been so far reported. The structures of major products and intermediates were confirmed by HPLC, mass-spectrometry (MS), 1H and 13C NMR analyses. The results contribute to the knowledge on the functional diversity of steroid-transforming filamentous fungi. Previously unexplored fungal biocatalysts capable of effective performing structural modification of AD and ADD can be applied for industrial bioprocesses of new generation.
Collapse
Affiliation(s)
- Vyacheslav Kollerov
- Federal Research Center «Pushchino Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow Region, Russia; Pharmins Ltd., Institutskaya ul, 4, 142290, Pushchino, Moscow Region, Russia.
| | - Andrei Shutov
- Federal Research Center «Pushchino Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow Region, Russia; Pharmins Ltd., Institutskaya ul, 4, 142290, Pushchino, Moscow Region, Russia
| | - Alexey Kazantsev
- Moscow State University, GSP-1, Leninskiye Gori, 1, Chemical Department, Moscow, Russia
| | - Marina Donova
- Federal Research Center «Pushchino Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospekt Nauki, 5, 142290, Pushchino, Moscow Region, Russia; Pharmins Ltd., Institutskaya ul, 4, 142290, Pushchino, Moscow Region, Russia
| |
Collapse
|
13
|
Chen J, Tang J, Xi Y, Dai Z, Bi C, Chen X, Fan F, Zhang X. Production of 14α-hydroxysteroids by a recombinant Saccharomyces cerevisiae biocatalyst expressing of a fungal steroid 14α-hydroxylation system. Appl Microbiol Biotechnol 2019; 103:8363-8374. [PMID: 31414163 DOI: 10.1007/s00253-019-10076-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/28/2019] [Accepted: 07/28/2019] [Indexed: 01/08/2023]
Abstract
The 14α-hydroxysteroids have specific anti-gonadotropic and carcinolytic biological activities and can be produced by microbial biotransformation. The steroid 11β-/14α-hydroxylase P-450lun from Cochliobolus lunatus is the only fungal cytochrome P450 enzyme identified to date with steroid C14 hydroxylation ability. Previous work has mainly revealed the 11β-hydroxylation activity of the P-450lun towards cortexolone (RSS) substrate; however, the potential steroid 14α-hydroxylation activity of this enzyme, especially for androstenedione (AD) substrate, has not yet conducted in-depth testing. In this work, we further tested the steroid 14α-hydroxylation activity of the P-450lun towards RSS and AD in the Saccharomyces cerevisiae system. We demonstrated that P-450lun functions as the specific 14α-hydroxylase towards the AD substrate (regiospecificity > 99%); however, it showed a poor C14-hydroxylation regiospecificity (around 40%) for the RSS substrate. In addition, through transcriptome analysis combined with gene functional characterizations, we also identified and cloned the gene for the P-450lun-associated redox partner CPRlun. Finally, through codon optimization, knockout of genes for the side reactions related enzymes GCY1 and YPR1, and increasing copies of the P-450lun and CPRlun, we developed a recombinant S. cerevisiae biocatalyst based on the C. lunatus steroid 14α-hydroxylation system to produce 14α-hydroxysteroids. Initial production of 14α-OH-AD (150 mg/L day productivity, 99% regioisomeric purity, and 60% w/w yield) and 14α-OH-RSS (64 mg/L day productivity, 40% regioisomeric purity, and 26% w/w yield) were separately achieved in shake flasks; these results represent the highest level of 14α-hydroxysteroid production in the current yeast system.
Collapse
Affiliation(s)
- Jing Chen
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,University of Chinese Academy of Sciences, Beijing, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China
| | - Jinlei Tang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China
| | - Yongyan Xi
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,University of Chinese Academy of Sciences, Beijing, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China
| | - Zhubo Dai
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China
| | - Changhao Bi
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China
| | - Xi Chen
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China
| | - Feiyu Fan
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China. .,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China.
| | - Xueli Zhang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China. .,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, 32 West 7th Ave, Tianjin Airport Economic Park, Tianjin, 300308, China.
| |
Collapse
|
14
|
Yildirim K, Kuru A, Küçükbaşol E. Microbial transformation of androstenedione by Cladosporium sphaerospermum and Ulocladium chartarum. BIOCATAL BIOTRANSFOR 2019. [DOI: 10.1080/10242422.2019.1604690] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Kudret Yildirim
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, Turkey
| | - Ali Kuru
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, Turkey
| | - Eda Küçükbaşol
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, Turkey
| |
Collapse
|
15
|
Immobilized and Free Cells of Geotrichum candidum for Asymmetric Reduction of Ketones: Stability and Recyclability. Molecules 2018; 23:molecules23092144. [PMID: 30150533 PMCID: PMC6225435 DOI: 10.3390/molecules23092144] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 08/23/2018] [Accepted: 08/24/2018] [Indexed: 01/22/2023] Open
Abstract
Marine-derived fungus Geotrichum candidum AS 2.361 was previously reported by our group as an active strain for the enantioselective reduction of ketones. Although some other Geotrichum strains were also found from the terrestrial sources, information on their stability and reusability is scarce. Herein, the stabilities—in terms of pH tolerance, thermostability, and storage stability, and reusability—of G. candidum AS 2.361 were described for the asymmetric reduction of a series of aromatic ketones. Two differently immobilized cells (agar immobilization and calcium alginate immobilization) as well as free cells were prepared. For three substrates (1-(3-bromophenyl) ethan-1-one (1b), 1-(2-chlorophenyl) ethan-1-one (1d), and acetophenone (1g)) immobilized cells on agar showed a great improvement in the bioreduction activities compared to the free cells, increasing yields up to 97% with ee values of 99%. Cells immobilized on agar/calcium alginate could maintain more than 90% of the original activities within the assayed pH ranges of 3.5–11, while free cells were highly sensitive to alkaline and acidic conditions. Concerning thermostability, immobilized cells on agar kept 99% of their original activities after incubation at 60 °C for 1 h, while almost no activity was detected for the free cells under the same condition. Immobilized cells were stable at 4 °C for 80 days without any activity loss, while free cells started to decrease the activity after storage at 4 °C for six days. The immobilized cells retained almost 99% activity after four reuse cycles, while free cells lost almost all the activities at on the third cycle.
Collapse
|
16
|
Biocatalyst-mediated production of 11,15-dihydroxy derivatives of androst-1,4-dien-3,17-dione. J Biosci Bioeng 2017; 123:692-697. [PMID: 28215508 DOI: 10.1016/j.jbiosc.2017.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/11/2017] [Accepted: 01/12/2017] [Indexed: 01/12/2023]
Abstract
Hydroxylation of steroids at various positions is a powerful tool for the production of valuable pharmaceutical ingredients and precursors. Our paper reported the synchronous dihydroxylation of an efficient strain, i.e., Colletotrichum lini AS3.4486, at two points. C. lini AS3.4486 was selected from 10 strains; this strain can catalyze the dihydroxylation of androst-1,4-dien-3,17-dione at C-11α and C-15α positions. Transformation of ADD(I) by C. lini AS3.4486 produced metabolites II-IV. The structures of these compounds were elucidated by liquid chromatography-mass spectrometry (LC-MS), Fourier Transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and X-ray as 15-hydroxyandrost-1,4-dien-3,17-dione (15α-OH-ADD; II), 11,15-dihydroxyandrost-1,4-dien-3,17-dione (11,15-diOH-ADD; III), and 15,17β-dihy-droxyandrost-1,4-dien-3-one (15-OH-BD; BD is the abbreviation of boldenone; IV). III, as a novel compound, was reported for the first time. The course of conversion and mechanism about dihydroxylation reaction was also investigated. On the basis of time course analysis of hydroxylation, I underwent regioselective hydroxylation at 15 position and was subsequently converted to III and IV. Enzyme inhibition analysis showed that 11- and 15-hydroxylations were catalyzed by different hydroxylases. The effect of substrate concentration on I transformation was also determined. Results showed that the optimum concentration of I was 20 g/L, and the yield of III was up to 18.8 g/L.
Collapse
|
17
|
Josefsen KD, Nordborg A, Sletta H. Bioconversion of Phytosterols into Androstenedione by Mycobacterium. Methods Mol Biol 2017; 1645:177-197. [PMID: 28710629 DOI: 10.1007/978-1-4939-7183-1_13] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The chapter describes the bioconversion of phytosterols to androstenedione (AD) with Mycobacterium spp. in shake flasks and fermenters, as well as LC-MS based methods for analysis of phytosterols and steroid products.Phytosterols are derived as a by-product of vegetable oil refining and of manufacture of wood pulp. Phytosterols contain the same four-ring nucleus as steroids, and may be converted to high-value steroids by removing the side chain at C17 and minor changes at other sites in the ring structure.Many bacteria, including Mycobacterium spp., are able to degrade phytosterols. Mutants of Mycobacterium spp. unable of ring cleavage can, when growing on phytosterols, accumulate the steroid intermediates androstenedione (AD) and/or androstadienedione (ADD).The practical challenge with microbial conversion of phytosterols to steroids is that both the substrate and the product are virtually insoluble in water. In addition, some steroids, notably ADD, may be toxic to cells.Two main strategies have been employed to overcome this challenge: the use of two-phase systems, and the addition of chemically modified cyclodextrins. The latter method is used here.Defined cultivation and bioconversion media for both shake flask and fermenter are given, as well as suggestions to minimize the practical problems caused by the water-insoluble phytosterol. Sampling, sample extraction, and quantification of substrates and products using LC-MS analysis are described.
Collapse
Affiliation(s)
- Kjell D Josefsen
- SINTEF Materials and Chemistry, Department of Biotechnology and Nanomedicine, Richard Birkelands vei 3 B, 7034, Trondheim, Norway.
| | - Anna Nordborg
- SINTEF Materials and Chemistry, Department of Biotechnology and Nanomedicine, Richard Birkelands vei 3 B, 7034, Trondheim, Norway
| | - Håvard Sletta
- SINTEF Materials and Chemistry, Department of Biotechnology and Nanomedicine, Richard Birkelands vei 3 B, 7034, Trondheim, Norway
| |
Collapse
|
18
|
Deshcherevskaya N, Lobastova T, Kollerov V, Kazantsev A, Donova M. Search and discovery of actinobacteria capable of transforming deoxycholic and cholic acids. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.12.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
19
|
Fryszkowska A, Peterson J, Davies NL, Dewar C, Evans G, Bycroft M, Triggs N, Fleming T, Gorantla SSC, Hoge G, Quirmbach M, Timmanna U, Reddy Poreddy S, Kumar Reddy DN, Dahanukar V, Holt-Tiffin KE. Development of a Chemoenzymatic Process for Dehydroepiandrosterone Acetate Synthesis. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00215] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anna Fryszkowska
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - Justine Peterson
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - Nichola L. Davies
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - Colin Dewar
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - George Evans
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - Matthew Bycroft
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - Neil Triggs
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - Toni Fleming
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | | | - Garrett Hoge
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| | - Michael Quirmbach
- Dr. Reddy’s Laboratories SA Elisabethenanlage, 11CH-4051 Basel, Switzerland
| | - Upadhya Timmanna
- Custom
Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Bollaram
Road, Miyapur, Hyderabad 500049, India
| | - Srinivas Reddy Poreddy
- Custom
Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Bollaram
Road, Miyapur, Hyderabad 500049, India
| | - D. Naresh Kumar Reddy
- Custom
Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Bollaram
Road, Miyapur, Hyderabad 500049, India
| | - Vilas Dahanukar
- Custom
Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Bollaram
Road, Miyapur, Hyderabad 500049, India
| | - Karen E. Holt-Tiffin
- Chirotech
Technology Centre, Dr. Reddy’s Laboratories EU Ltd., 410 Cambridge
Science Park, Cambridge CB4 0PE, United Kingdom
| |
Collapse
|
20
|
Kollerov VV, Fokina VV, Sukhodolskaya GV, Shutov AA, Donova MV. 11β-Hydroxylation of 6α-fluoro-16α-methyl-deoxycorticosterone 21-acetate by filamentous fungi. APPL BIOCHEM MICRO+ 2015. [DOI: 10.1134/s0003683815020106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
21
|
Research on Biochemical Materials with Hydroxylation of Androst-4-en-3,17-dione by Colletotrichum lini AS3. 4486. ACTA ACUST UNITED AC 2014. [DOI: 10.4028/www.scientific.net/amm.540.347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microbial transformation of androst-4-en-3,17-dione (AD; 1) usingColletotrichum liniAS3. 4486 resulted in the production of two metabolites 2 and 3. The structures of these compounds were elucidated by spectroscopic analysis (LC-MS, FTIR and NMR) as 15α-hydroxyandrost-4-en-3,17-dione (15α-OH-AD; 2) and 11α,15α-dihydroxyandrost-4-en-3,17-dione (11α,15α-diOH-AD; 3). AD underwent regioselective hydroxylation at 15α position, subsequently hydroxylated at 11α position and converted to compound 3. 11α,15α-diOH-AD as an important metabolic product was pharmaceutical intermediate and the yield was up to 97.58% when the concentration of substrate was 4 g L-1.
Collapse
|
22
|
Andryushina VA, Yaderets VV, Stytsenko TS, Druzhinina AV, Voishvillo NE. Effect of the steroid molecule structure on the direction of its hydroxylation by the fungus Curvularia lunata. APPL BIOCHEM MICRO+ 2013. [DOI: 10.1134/s0003683813040030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
23
|
14α-Hydroxylation of steroids by mycelium of the mold fungus Curvularia lunata (VKPM F-981) to produce precursors for synthesizing new steroidal drugs. Pharm Chem J 2013. [DOI: 10.1007/s11094-013-0905-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
24
|
Chen XH, Wang XT, Lou WY, Li Y, Wu H, Zong MH, Smith TJ, Chen XD. Immobilization of Acetobacter sp. CCTCC M209061 for efficient asymmetric reduction of ketones and biocatalyst recycling. Microb Cell Fact 2012; 11:119. [PMID: 22947394 PMCID: PMC3507673 DOI: 10.1186/1475-2859-11-119] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 08/27/2012] [Indexed: 12/02/2022] Open
Abstract
Background The bacterium Acetobacter sp. CCTCC M209061 is a promising whole-cell biocatalyst with exclusive anti-Prelog stereoselectivity for the reduction of prochiral ketones that can be used to make valuable chiral alcohols such as (R)-4-(trimethylsilyl)-3-butyn-2-ol. Although it has promising catalytic properties, its stability and reusability are relatively poor compared to other biocatalysts. Hence, we explored various materials for immobilizing the active cells, in order to improve the operational stability of biocatalyst. Results It was found that Ca-alginate give the best immobilized biocatalyst, which was then coated with chitosan to further improve its mechanical strength and swelling-resistance properties. Conditions were optimized for formation of reusable immobilized beads which can be used for repeated batch asymmetric reduction of 4′-chloroacetophenone. The optimized immobilized biocatalyst was very promising, with a specific activity of 85% that of the free-cell biocatalyst (34.66 μmol/min/g dw of cells for immobilized catalyst vs 40.54 μmol/min/g for free cells in the asymmetric reduction of 4′-chloroacetophenone). The immobilized cells showed better thermal stability, pH stability, solvent tolerance and storability compared with free cells. After 25 cycles reaction, the immobilized beads still retained >50% catalytic activity, which was 3.5 times higher than degree of retention of activity by free cells reused in a similar way. The cells could be recultured in the beads to regain full activity and perform a further 25 cycles of the reduction reaction. The external mass transfer resistances were negligible as deduced from Damkohler modulus Da < <1, and internal mass transfer restriction affected the reduction action but was not the principal rate-controlling step according to effectiveness factors η < 1 and Thiele modulus 0.3<∅ <1. Conclusions Ca-alginate coated with chitosan is a highly effective material for immobilization of Acetobacter sp. CCTCC M209061 cells for repeated use in the asymmetric reduction of ketones. Only a small cost in terms of the slightly lower catalytic activity compared to free cells could give highly practicable immobilized biocatalyst.
Collapse
Affiliation(s)
- Xiao-Hong Chen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Donova MV, Egorova OV. Microbial steroid transformations: current state and prospects. Appl Microbiol Biotechnol 2012; 94:1423-47. [PMID: 22562163 DOI: 10.1007/s00253-012-4078-0] [Citation(s) in RCA: 324] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 04/03/2012] [Accepted: 04/03/2012] [Indexed: 12/14/2022]
Abstract
Studies of steroid modifications catalyzed by microbial whole cells represent a well-established research area in white biotechnology. Still, advances over the last decade in genetic and metabolic engineering, whole-cell biocatalysis in non-conventional media, and process monitoring raised research in this field to a new level. This review summarizes the data on microbial steroid conversion obtained since 2003. The key reactions of structural steroid functionalization by microorganisms are highlighted including sterol side-chain degradation, hydroxylation at various positions of the steroid core, and redox reactions. We also describe methods for enhancement of bioprocess productivity, selectivity of target reactions, and application of microbial transformations for production of valuable pharmaceutical ingredients and precursors. Challenges and prospects of whole-cell biocatalysis applications in steroid industry are discussed.
Collapse
Affiliation(s)
- Marina V Donova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, pr. Nauki 5, Pushchino, Moscow Region 142290, Russia.
| | | |
Collapse
|
26
|
Cannell RJP, Sarker SD, Nahar L. Follow-up of natural products isolation. Methods Mol Biol 2012; 864:473-514. [PMID: 22367909 DOI: 10.1007/978-1-61779-624-1_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Follow-up of natural products isolation refers to re-isolation of compound(s) of interest in larger amounts for further pharmacological testing, conclusive structure elucidation, structure modifications to synthesize analogs for structure-activity relationships (SAR) studies, preformulation and formulation studies or clinical trials. In addition to conventional synthetic chemistry approaches, several other methodologies can be applied for following-up natural products isolation. This chapter outlines, with specific examples, various strategies and methods involved in follow-up of natural products isolation.
Collapse
Affiliation(s)
- Richard J P Cannell
- Department of Pharmacy, School of Applied Sciences, University of Wolverhampton, Wolverhampton, WV11LY, UK
| | | | | |
Collapse
|
27
|
Shen YB, Wang M, Liang QK, Luo JM. 11α,15α-Dihy-droxy-androst-4-ene-3,17-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2752. [PMID: 22058810 PMCID: PMC3201477 DOI: 10.1107/s1600536811038608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 09/20/2011] [Indexed: 11/18/2022]
Abstract
The title compound, C(19)H(26)O(4), was biotransformed from androstenedione. In the crystal, inter-molecular O-H⋯O hydrogen bonds link molecules into a corrugated sheet, which lies parallel to the ab plane. Ring A has a slightly distorted half-chair conformation, rings B and C adopt chair conformations, while the cyclo-pentane ring D adopts a 14α-envelope conformation.
Collapse
Affiliation(s)
- Yan-Bing Shen
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Min Wang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Qi-Kun Liang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| | - Jian-Mei Luo
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457 People’s Republic of China
| |
Collapse
|
28
|
Andrushina VA, Druzhinina AV, Yaderets VV, Stitsenko TS, Voishvillo NE. Hydroxylation of steroids by Curvularia lunata mycelium in the presence of methyl-β-cyclodextrine. APPL BIOCHEM MICRO+ 2011. [DOI: 10.1134/s0003683811010029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
29
|
|
30
|
Kollerov VV, Shutov AA, Fokina VV, Sukhodol’skaya GV, Gulevskaya SA, Donova MV. Bioconversion of C19- and C21-steroids with parent and mutant strains of Curvularia lunata. APPL BIOCHEM MICRO+ 2010. [DOI: 10.1134/s0003683810020122] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|