1
|
Tembeni B, Idowu OE, Benrkia R, Boutahiri S, Olatunji OJ. Biotransformation of selected secondary metabolites by Alternaria species and the pharmaceutical, food and agricultural application of biotransformation products. NATURAL PRODUCTS AND BIOPROSPECTING 2024; 14:46. [PMID: 39158793 PMCID: PMC11333692 DOI: 10.1007/s13659-024-00469-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Accepted: 08/04/2024] [Indexed: 08/20/2024]
Abstract
Biotransformation is a process in which molecules are modified in the presence of a biocatalyst or enzymes, as well as the metabolic alterations that occur in organisms from exposure to the molecules. Microbial biotransformation is an important process in natural product drug discovery as novel compounds are biosynthesised. Additionally, biotransformation products offer compounds with improved efficacy, solubility, reduced cytotoxic and allows for the understanding of structure activity relationships. One of the driving forces for these impeccable findings are associated with the presence of cytochrome P450 monooxygenases that is present in all organisms such as mammals, bacteria, and fungi. Numerous fungal strains have been used and reported for their ability to biotransform different compounds. This review focused on studies using Alternaria species as biocatalysts in the biotransformation of natural product compounds. Alternaria species facilitates reactions that favour stereoselectivity, regioselectivity under mild conditions. Additionally, microbial biotransformation products, their application in food, pharmaceutical and agricultural sector is discussed in this review.
Collapse
Affiliation(s)
- Babalwa Tembeni
- African Genome Center, Mohammed VI Polytechnic University, Benguerir, Morocco.
| | | | - Rachid Benrkia
- African Genome Center, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Salima Boutahiri
- African Genome Center, Mohammed VI Polytechnic University, Benguerir, Morocco
| | | |
Collapse
|
2
|
Feng DH, Cui JL. Progress on metabolites of Astragalus medicinal plants and a new factor affecting their formation: Biotransformation of endophytic fungi. Arch Pharm (Weinheim) 2024:e2400249. [PMID: 38838334 DOI: 10.1002/ardp.202400249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/13/2024] [Accepted: 05/16/2024] [Indexed: 06/07/2024]
Abstract
It is generally believed that the main influencing factors of plant metabolism are genetic and environmental factors. However, the transformation and catalysis of metabolic intermediates by endophytic fungi have become a new factor and resource attracting attention in recent years. There are over 2000 precious plant species in the Astragalus genus. In the past decade, at least 303 high-value metabolites have been isolated from the Astragalus medicinal plants, including 124 saponins, 150 flavonoids, two alkaloids, six sterols, and over 20 other types of compounds. These medicinal plants contain abundant endophytic fungi with unique functions, and nearly 600 endophytic fungi with known identity have been detected, but only about 35 strains belonging to 13 genera have been isolated. Among them, at least four strains affiliated to Penicillium roseopurpureum, Alternaria eureka, Neosartorya hiratsukae, and Camarosporium laburnicola have demonstrated the ability to biotransform four saponin compounds from the Astragalus genus, resulting in the production of 66 new compounds, which have significantly enhanced our understanding of the formation of metabolites in plants of the Astragalus genus. They provide a scientific basis for improving the cultivation quality of Astragalus plants through the modification of dominant fungal endophytes or reshaping the endophytic fungal community. Additionally, they open up new avenues for the discovery of specialized, green, efficient, and sustainable biotransformation pathways for complex pharmaceutical intermediates.
Collapse
Affiliation(s)
- Ding-Hui Feng
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi, People's Republic of China
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, Shanxi, People's Republic of China
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijng, People's Republic of China
| | - Jin-Long Cui
- Institute of Applied Chemistry, Shanxi University, Taiyuan, Shanxi, People's Republic of China
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, Shanxi, People's Republic of China
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijng, People's Republic of China
| |
Collapse
|
3
|
Zhu F, Zhang X, Du BY, Zhu XX, Zhao GF, Sun Y, Yao QQ, Liang HB, Yao JC, Liu Z, Zhang GM, Qin GF. Using UPLC-LTQ-Orbitrap-MS and HPLC-CAD to Identify Impurities in Cycloastragenol, Which Is a Pre-Clinical Candidate for COPD. Molecules 2023; 28:6382. [PMID: 37687212 PMCID: PMC10489802 DOI: 10.3390/molecules28176382] [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: 07/27/2023] [Revised: 08/29/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a highly prevalent disease that has become the third leading cause of death worldwide. Cycloastragenol (CAG), which is the genuine sapogenin of the main active triterpene saponins in Astragali radix, is a bioavailable pre-clinical candidate for chronic obstructive pulmonary disease (COPD), and it was investigated in our previous study. In order to progress medical research, it was first efficiently produced on a 2.5-kg scale via Smith degradation from astragaloside IV (AS-IV). Simultaneously, since the impurity profiling of a drug is critical for performing CMC documentation in pre-clinical development, a study on impurities was carried out. As these structures do not contain chromophores and possess weak UV absorption characteristics, HPLC-CAD and UPLC-LTQ-Orbitrap-MS were employed to carry out the quality control of the impurities. Then, column chromatography (CC), preparative thin-layer chromatography (PTLC), and crystallization led to the identification of 15 impurities from CAG API. Among these impurities, compounds 1, 4, 9, 10, 14, and 15 were elucidated via spectroscopic analysis, and 2-3, 5-8, and 11-13 were putatively identified. Interestingly, the new compounds 9 and 14 were rare 10, 19-secocycloartane triterpenoids that displayed certain anti-inflammatory activities against LPS-induced lymphocyte cells and CSE-induced MLE-12 cells. Additionally, a plausible structural transformation pathway of the degradation compounds from CAG or AS IV was proposed. The information obtained will provide a material basis to carry out the quality control and clinical safety assurance of API and related prescriptions. Reasonable guidance will also be provided regarding the compounds with weak UV absorption characteristics.
Collapse
Affiliation(s)
- Feng Zhu
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
| | - Xiao Zhang
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Bing-Yuan Du
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
| | - Xiang-Xia Zhu
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
| | - Gui-Fang Zhao
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
| | - Ying Sun
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | | | - Hong-Bao Liang
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Jing-Chun Yao
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
| | - Zhong Liu
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
| | - Gui-Min Zhang
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Guo-Fei Qin
- State Key Laboratory of Integration and Innovation of Classic Formula and Modern Chinese Medicine, Lunan Pharmaceutical Group Co., Ltd., Linyi 273400, China; (F.Z.); (X.Z.); (B.-Y.D.); (X.-X.Z.); (G.-F.Z.); (Y.S.); (H.-B.L.); (J.-C.Y.); (Z.L.)
| |
Collapse
|
4
|
Neuroprotective metabolites via fungal biotransformation of a novel sapogenin, cyclocephagenol. Sci Rep 2022; 12:18481. [PMID: 36323752 PMCID: PMC9630500 DOI: 10.1038/s41598-022-22799-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/19/2022] [Indexed: 01/06/2023] Open
Abstract
Cyclocephagenol (1), a novel cycloartane-type sapogenin with tetrahydropyran unit, is only encountered in Astragalus species. This rare sapogenin has never been a topic of biological activity or modification studies. The objectives of this study were; (i) to perform microbial transformation studies on cyclocephagenol (1) using Astragalus endophyte, Alternaria eureka 1E1BL1, followed by isolation and structural characterization of the metabolites; (ii) to investigate neuroprotective activities of the metabolites; (iii) to understand structure-activity relationships towards neuroprotection. The microbial transformation of cyclocephagenol (1) using Alternaria eureka resulted in the production of twenty-one (2-22) previously undescribed metabolites. Oxidation, monooxygenation, dehydration, methyl migration, epoxidation, and ring expansion reactions were observed on the triterpenoid skeleton. Structures of the compounds were established by 1D-, 2D-NMR, and HR-MS analyses. The neuroprotective activities of metabolites and parent compound (1) were evaluated against H2O2-induced cell injury. The structure-activity relationship (SAR) was established, and the results revealed that 1 and several other metabolites had potent neuroprotective activity. Further studies revealed that selected compounds reduced the amount of ROS and preserved the integrity of the mitochondrial membrane. This is the first report of microbial transformation of cyclocephagenol (1).
Collapse
|
5
|
Wu Y, Lu Y, Yi Y, Wang A, Wang W, Yang M, Fan B, Chen G. Biotransformation of asiatic acid by Cunninghamella echinulata and Circinella muscae to discover anti-neuroinflammatory derivatives. Nat Prod Res 2022:1-6. [PMID: 36218232 DOI: 10.1080/14786419.2022.2132500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
In this study, the biotransformation of asiatic acid by Cunninghamella echinulata CGMCC 3.970 and Circinella muscae CGMCC 3.2695 was investigated. Scaled-up biotransformation reactions yielded eight metabolites. Their structures were established based on extensive NMR and HR-ESI-MS data analyses and four of them are new compounds. C. echinulata could catalyze the regioselecitve hydroxylation, carbonylation and lactonization to yield five metabolites. C. muscae could selectively catalyze hydroxylation, acetylation and glycosylation to yield four products. Furthermore, all the identified metabolites were evaluated for their anti-neuroinflammatory activities in LPS-induced BV-2 cells. Most metabolites displayed pronounced inhibitory effect on nitric oxide (NO) production. The results suggested that biotransformed derivatives of asiatic acid might be served as potential neuroinflammatory inhibitors.
Collapse
Affiliation(s)
- Yanni Wu
- School of Pharmacy, Nantong University, Nantong, China
| | - Youjia Lu
- School of Pharmacy, Nantong University, Nantong, China
| | - Ying Yi
- School of Pharmacy, Nantong University, Nantong, China
| | - Andong Wang
- School of Pharmacy, Nantong University, Nantong, China
| | - Wenli Wang
- School of Pharmacy, Nantong University, Nantong, China
| | - Min Yang
- School of Pharmacy, Nantong University, Nantong, China
| | - Boyi Fan
- School of Pharmacy, Nantong University, Nantong, China
| | | |
Collapse
|
6
|
Yilmaz S, Bedir E, Ballar Kirmizibayrak P. The role of cycloastragenol at the intersection of NRF2/ARE, telomerase, and proteasome activity. Free Radic Biol Med 2022; 188:105-116. [PMID: 35718303 DOI: 10.1016/j.freeradbiomed.2022.06.230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 10/18/2022]
Abstract
Aging is well-characterized by the gradual decline of cellular functionality. As redox balance, proteostasis, and telomerase systems have been found to be associated with aging and age-related diseases, targeting these systems with small compounds has been considered a promising therapeutic approach. Cycloastragenol (CA), a small molecule telomerase activator obtained from Astragalus species, has been reported to positively affect several age-related pathophysiologies, but the mechanisms underlying CA activity have yet to be reported. Here, we presented that CA increased NRF2 nuclear localization and activity leading to upregulation of cytoprotective enzymes and attenuation of oxidative stress-induced ROS levels. Furthermore, CA-mediated induction of telomerase activity was found to be regulated by NRF2. CA not only increased the expression of hTERT but also its nuclear localization via upregulating the Hsp90-chaperon complex. In addition to modulating nuclear hTERT levels at unstressed conditions, CA alleviated oxidative stress-induced mitochondrial hTERT levels while increasing nuclear hTERT levels. Concomitantly, H2O2-induced mitochondrial ROS level was found to be significantly decreased by CA administration. Our data also revealed that CA strongly enhanced proteasome activity and assembly. More importantly, the proteasome activator effect of CA is dependent on the induction of telomerase activity, which is mediated by NRF2 system. In conclusion, our results not only revealed the cross-talk among NRF2, telomerase, and proteasome systems but also that CA functions at the intersection of these three major aging-related cellular pathways.
Collapse
Affiliation(s)
- Sinem Yilmaz
- Department of Biotechnology, Graduate School of Natural and Applied Sciences, Ege University, Bornova, Izmir, Turkey; Department of Bioengineering, Faculty of Engineering, University of Alanya Aladdin Keykubat, Antalya, Turkey
| | - Erdal Bedir
- Department of Bioengineering, Izmir Institute of Technology, 35430, Urla, Izmir, Turkey.
| | | |
Collapse
|
7
|
Chu C, Song K, Zhang Y, Yang M, Fan B, Huang H, Chen G. Biotransformation of ursolic acid by Circinella muscae and their anti-neuroinflammatory activities of metabolites. Nat Prod Res 2022; 36:2777-2782. [PMID: 33977841 DOI: 10.1080/14786419.2021.1925893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 10/21/2022]
Abstract
In this study, the biotransformation of ursolic acid by Circinella muscae CGMCC 3.2695 was investigated. Scaled-up biotransformation reactions yielded ten metabolites. Their structures were established based on extensive NMR and HR-ESI-MS data analyses, and four of them are new compounds. C. muscae could selectively catalyze hydroxylation, lactonisation, carbonylation and carboxyl reduction reactions. Furthermore, all the identified metabolites were evaluated for their anti-neuroinflammatory activities in LPS-induced BV-2 cells. Most metabolites displayed pronounced inhibitory effect on nitric oxide (NO) production. The results suggested that biotransformed derivatives of ursolic acid might be served as potential neuroinflammatory inhibitors.
Collapse
Affiliation(s)
- Chengjiao Chu
- School of Pharmacy, Nantong University, Nantong, China
| | - Kainan Song
- School of Pharmacy, Nantong University, Nantong, China
| | | | - Min Yang
- School of Pharmacy, Nantong University, Nantong, China
| | - Boyi Fan
- School of Pharmacy, Nantong University, Nantong, China
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, ministry of education, Nanchang, China
| | | |
Collapse
|
8
|
Song KN, Lu YJ, Chu CJ, Wu YN, Huang HL, Fan BY, Chen GT. Biotransformation of Betulonic Acid by the Fungus Rhizopus arrhizus CGMCC 3.868 and Antineuroinflammatory Activity of the Biotransformation Products. JOURNAL OF NATURAL PRODUCTS 2021; 84:2664-2674. [PMID: 34546050 DOI: 10.1021/acs.jnatprod.1c00480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Biotransformation of betulonic acid (1) by Rhizopus arrhizus CGMCC 3.868 resulted in the production of 16 new (3, 5, 6, and 9-21) and five known compounds. Structures of the new compounds were established by analysis of spectroscopic data. Hydroxylation, acetylation, oxygenation, glycosylation, and addition reactions involved the C-20-C-29 double bond. Antineuroinflammatory activities of the obtained compounds in NO production were tested in lipopolysaccharides-induced BV-2 cells. Compared with the substrate betulonic acid, biotransformation products 3, 8, 9, 14, and 21 exhibited an improved inhibitory effect, with IC50 values of 10.26, 11.09, 5.38, 1.55, and 4.69 μM, lower than that of the positive control, NG-monomethyl-l-arginine.
Collapse
Affiliation(s)
- Kai-Nan Song
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, People's Republic of China
| | - You-Jia Lu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, People's Republic of China
| | - Cheng-Jiao Chu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, People's Republic of China
| | - Yan-Ni Wu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, People's Republic of China
| | - Hui-Lian Huang
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, 818 Xingwan Road, Nanchang, Jiangxi 330004, People's Republic of China
| | - Bo-Yi Fan
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, People's Republic of China
| | - Guang-Tong Chen
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, People's Republic of China
| |
Collapse
|
9
|
Wang L, Chen K, Wang Z, Yi Y, Zhang M, Hasan A, Kuang Y, Shaker S, Yu R, Wang H, Liu H, Ye M, Qiao X. AmAT19, an acetyltransferase from Astragalus membranaceus, catalyses specific 6α-OH acetylation for tetracyclic triterpenes and steroids. Org Biomol Chem 2021; 19:7186-7189. [PMID: 34378606 DOI: 10.1039/d1ob01106e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tetracyclic triterpenes and steroids are pharmacologically important molecules, and acetylation could improve their bioactivities. In this study, a highly regio- and stereo-specific acetyltransferase, AmAT19, was discovered from Astragalus membranaceus. AmAT19 could selectively catalyze the 6α-OH acetylation of four tetracyclic triterpenes and steroids. The strict selectivity is associated with different orientations of the 6α/β-OH as indicated by molecular docking. Acetylated products 1a, 3a and 4a remarkably increased the inhibitory activity against the 3-chymotrypsin-like protease (3CLpro) of SARS-CoV-2, compared to 1, 3, and 4. AmAT19 could be a promising catalyst for specific 6α-OH acetylation to expand the molecular diversity of triterpenes and steroids.
Collapse
Affiliation(s)
- Linlin Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Chen C, Song K, Zhang Y, Chu C, Fan B, Song Y, Huang H, Chen G. Biotransformation of betulinic acid by Circinella muscae and Cunninghamella echinulata to discover anti-inflammatory derivatives. PHYTOCHEMISTRY 2021; 182:112608. [PMID: 33310627 DOI: 10.1016/j.phytochem.2020.112608] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Biotransformation of betulinic acid was carried out with Circinella muscae CGMCC 3.2695 and Cunninghamella echinulata CGMCC 3.970, yielded six previously undescribed hydroxylated metabolites and four known compounds. C. muscae could catalyze the regioselecitve hydroxylation and carbonylation at C-3, C-7, C-15 and C-21 to yield seven products. C. echinulata could catalyze the C-1, C-7 and C-26 regioselecitve hydroxylation and acetylation to yield five metabolites. The structures of the metabolites were established based on extensive NMR and HR-ESI-MS data analyses. Furthermore, most of the metabolites exhibited pronounced inhibitory activities on lipopolysaccharides-induced NO production in RAW264.7 cells.
Collapse
Affiliation(s)
- Chen Chen
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Kainan Song
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Yongzhen Zhang
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Chengjiao Chu
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Boyi Fan
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Yan Song
- School of Pharmacy, Nantong University, Nantong, 226001, PR China.
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, Ministry of Education, Nanchang, 330004, PR China
| | - Guangtong Chen
- School of Pharmacy, Nantong University, Nantong, 226001, PR China.
| |
Collapse
|
11
|
Ekiz G, Yılmaz S, Yusufoglu H, Kırmızıbayrak PB, Bedir E. Microbial Transformation of Cycloastragenol and Astragenol by Endophytic Fungi Isolated from Astragalus Species. JOURNAL OF NATURAL PRODUCTS 2019; 82:2979-2985. [PMID: 31713424 DOI: 10.1021/acs.jnatprod.9b00336] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biotransformation of Astragalus sapogenins (cycloastragenol (1) and astragenol (2)) by Astragalus species originated endophytic fungi resulted in the production of five new metabolites (3, 7, 10, 12, 14) together with 10 known compounds. The structures of the new compounds were established by NMR spectroscopic and HRMS analysis. Oxygenation, oxidation, epoxidation, dehydrogenation, and ring cleavage reactions were observed on the cycloartane (9,19-cyclolanostane) nucleus. The ability of the compounds to increase telomerase activity in neonatal cells was also evaluated. After prescreening studies to define potent telomerase activators, four compounds were selected for subsequent bioassays. These were performed using very low doses ranging from 0.1 to 30 nM compared to the control cells treated with DMSO. The positive control cycloastragenol and 8 were found to be the most active compounds, with 5.2- (2 nM) and 5.1- (0.5 nM) fold activations versus DMSO, respectively. At the lowest dose of 0.1 nM, compounds 4 and 13 provided 3.5- and 3.8-fold activations, respectively, while cycloastragenol showed a limited activation (1.5-fold).
Collapse
Affiliation(s)
- Güner Ekiz
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy , Near East University , Nicosia , Mersin 10 , Turkey
- Department of Bioengineering, Graduate School of Natural and Applied Sciences , Ege University , 35100 Bornova-İzmir , Turkey
| | - Sinem Yılmaz
- Department of Bioengineering, Faculty of Engineering , University of Alanya Aladdin Keykubat , Antalya 07400 , Turkey
- Department of Biotechnology, Graduate School of Natural and Applied Sciences , Ege University , 35100 Bornova-İzmir , Turkey
| | - Hasan Yusufoglu
- Department of Pharmacognosy, College of Pharmacy , Prince Sattam Bin Abdulaziz University , 11942 Al-Kharj , Saudi Arabia
| | | | - Erdal Bedir
- Department of Bioengineering, Faculty of Engineering , Izmir Institute of Technology , 35430 Urla-Izmir , Turkey
| |
Collapse
|
12
|
Li J, Jiang B, Chen C, Fan B, Huang H, Chen G. Biotransformation of betulin by Mucor subtilissimus to discover anti-inflammatory derivatives. PHYTOCHEMISTRY 2019; 166:112076. [PMID: 31351331 DOI: 10.1016/j.phytochem.2019.112076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Biotransformation of lupane-type triterpenoid betulin was carried out with Mucor subtilissimus CGMCC 3.2456. Yielded nine previously undescribed hydroxylated compounds. M. subtilissimus biotransformation provided C-7, C-11, C-15 and C-24 hydroxylated compounds along with C-7 oxidized and C-28 acetylated derivatives. The structures of the metabolites were established based on extensive NMR and HR-ESI-MS data analyses. Furthermore, we found that most of the metabolites exhibited pronounced inhibitory activities on lipopolysaccharides-induced NO production in RAW264.7 cells.
Collapse
Affiliation(s)
- Jianlin Li
- School of Pharmacy, Nantong University, Nantong, China
| | | | - Chen Chen
- School of Pharmacy, Nantong University, Nantong, China
| | - Boyi Fan
- School of Pharmacy, Nantong University, Nantong, China
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, Ministry of Education, Nanchang, China
| | | |
Collapse
|
13
|
Chen C, Ni Y, Jiang B, Yan S, Xu B, Fan B, Huang H, Chen G. Anti-aging derivatives of cycloastragenol produced by biotransformation. Nat Prod Res 2019; 35:2685-2690. [DOI: 10.1080/14786419.2019.1662011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Chen Chen
- School of Pharmacy, Nantong University, Nantong, PR China
| | - Yaohui Ni
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, PR China
| | - Baocheng Jiang
- School of Pharmacy, Nantong University, Nantong, PR China
| | - Song Yan
- School of Pharmacy, Nantong University, Nantong, PR China
| | - Bohui Xu
- School of Pharmacy, Nantong University, Nantong, PR China
| | - Boyi Fan
- School of Pharmacy, Nantong University, Nantong, PR China
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, Ministry of Education, Nanchang, PR China
| | - Guangtong Chen
- School of Pharmacy, Nantong University, Nantong, PR China
| |
Collapse
|
14
|
Lin H, Jiang B, Chen C, Song Y, Yang M, Huang H, Chen G. Microbial transformation of the anti-aging agent cycloastragenol by Mucor racemosus. Nat Prod Res 2018; 33:3103-3108. [DOI: 10.1080/14786419.2018.1519822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Haijun Lin
- School of Pharmacy, Nantong University, Nantong 226001, PR China
| | - Baocheng Jiang
- School of Pharmacy, Nantong University, Nantong 226001, PR China
| | - Chen Chen
- School of Pharmacy, Nantong University, Nantong 226001, PR China
| | - Yan Song
- School of Pharmacy, Nantong University, Nantong 226001, PR China
| | - Min Yang
- School of Pharmacy, Nantong University, Nantong 226001, PR China
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, ministry of education, Nanchang 330004, PR China
| | - Guangtong Chen
- School of Pharmacy, Nantong University, Nantong 226001, PR China
| |
Collapse
|
15
|
Ekiz G, Duman S, Bedir E. Biotransformation of cyclocanthogenol by the endophytic fungus Alternaria eureka 1E1BL1. PHYTOCHEMISTRY 2018; 151:91-98. [PMID: 29677643 DOI: 10.1016/j.phytochem.2018.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 03/31/2018] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
The microbial transformation of cyclocanthogenol (CCG), Astragalus sp. originated sapogenin, by the endophytic fungus Alternaria eureka 1E1BL1 isolated from Astragalus angustifolius was investigated. Hydroxylation, oxidation, epoxidation, O-methylation, ring-expansion and methyl migration reactions were observed on the triterpenoid skeleton. As a result, eight metabolites were isolated and the structures of the previously undescribed compounds were established by 1-D, 2-D NMR and HR-MS analyses.
Collapse
Affiliation(s)
- Güner Ekiz
- Department of Pharmacognosy, Faculty of Pharmacy, Near East University, Nicosia, Mersin 10, Turkey
| | - Seda Duman
- Department of Bioengineering, Faculty of Engineering, Izmir Institute of Technology, 35430 Urla-Izmir, Turkey
| | - Erdal Bedir
- Department of Bioengineering, Faculty of Engineering, Izmir Institute of Technology, 35430 Urla-Izmir, Turkey.
| |
Collapse
|
16
|
Yan S, Lin H, Huang H, Yang M, Xu B, Chen G. Microbial hydroxylation and glycosidation of oleanolic acid by Circinella muscae and their anti-inflammatory activities. Nat Prod Res 2018; 33:1849-1855. [DOI: 10.1080/14786419.2018.1477150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sensen Yan
- School of Pharmacy, Nantong University , Nantong, PR China
| | - Haijun Lin
- School of Pharmacy, Nantong University , Nantong, PR China
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine , Nanchang, PR China
| | - Min Yang
- School of Pharmacy, Nantong University , Nantong, PR China
| | - Bohui Xu
- School of Pharmacy, Nantong University , Nantong, PR China
| | - Guangtong Chen
- School of Pharmacy, Nantong University , Nantong, PR China
| |
Collapse
|
17
|
Li JL, Ding P, Jiang B, Yang M, Ren J, Song Y, Chen G. Biotransformation of 20( R)-panaxatriol by the fungus Aspergillus flavus Link AS 3.3950. Nat Prod Res 2017; 33:1393-1398. [PMID: 29251999 DOI: 10.1080/14786419.2017.1416380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Microbial transformation of 20(R)-panaxatriol by the fungus Aspergillus flavus Link AS 3.3950 was performed. Four new (1-4), along with two previously reported metabolites (5 and 6), were obtained. Their chemical structures were elucidated on the basis of extensive spectroscopic analyses. Furthermore, the inhibitory effects of those compounds on K562/ADR, Du-145, Hela, MCF-7 and HepG2 cell lines were evaluated by MTT assay. Among them, compound 15β-hydroxy-20(R)-panaxatriol (4) exhibited selective inhibitory effects on human leukaemic progenitor cells K562/ADR through arresting cell cycle, which was associated with obvious decrease of cyclin B1, cyclin D1 and cyclin-dependent kinase (CDK) 1/2/4/6 protein expression.
Collapse
Affiliation(s)
- Jian Lin Li
- a School of Pharmacy , Nantong University , Nantong , China
| | - Peiyu Ding
- a School of Pharmacy , Nantong University , Nantong , China
| | - Baocheng Jiang
- a School of Pharmacy , Nantong University , Nantong , China
| | - Min Yang
- a School of Pharmacy , Nantong University , Nantong , China
| | - Jie Ren
- b School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou , China
| | - Yan Song
- a School of Pharmacy , Nantong University , Nantong , China
| | - Guangtong Chen
- a School of Pharmacy , Nantong University , Nantong , China
| |
Collapse
|