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Campbell-Tofte J, Mu H, Winther K, Mølgaard P, Belin N, Josefsen K. Standardization parameters and synergism of source plant materials for the antidiabetic efficacy of the Rauvolfia-Citrus tea. Fitoterapia 2024; 176:106004. [PMID: 38744382 DOI: 10.1016/j.fitote.2024.106004] [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] [Received: 11/13/2023] [Revised: 04/14/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024]
Abstract
The introduction of glucagon-like peptide 1 (GLP-1)-based therapies has greatly improved the management of type 2 diabetes (T2D), as they ensure good blood glucose control and promote weight loss. Ingestion of standardized herbal remedies that promote the same endogenous metabolic processes affected by the GLP-1-based treatments could provide cheaper alternatives in low- and middle-income countries, where there is currently an increase in the incidence of T2D. The focus in this study was to determine quality control parameters and the prime factors for the Rauvolfia-Citrus tea (RC-tea), as used in Nigerian traditional medicine to treat T2D. We have previously shown that the RC-tea that is made by boiling leaves of Rauvolfia vomitoria Afzel. and fruits of Citrus aurantium L. causes normalization of blood glucose and reduction of ectopic lipid accumulation in genetic diabetic (BKS-db) mice and in humans with T2D. The standardized RC-tea was made by boiling 40 g dried R. vomitoria foliage and 200 g fresh C. aurantium fruits per litre. The resulting golden-brown extract is free of microbial contamination, has pH 5 and contains ca. 230 mg naringin (marker compound for C. aurantium) and 25 mg robinin (marker compound for R. vomitoria) per litre. In addition, the herbal extract has the characteristic HPLC-DAD fingerprint where the marker compounds, naringin and robinin have retention times of approximately 26.3 min and 26.9 min, respectively, when using the outlined column and gradient elution conditions. Comparative evaluations of the antidiabetic effects of the standardized RC-tea and boiling water-extracts made with C. aurantium fruits alone (CA), R. vomitoria foliage alone (RV) and a combination of CA and RV, (CA + RV) in BKS-db mice, indicate that components from R. vomitoria foliage drive the reductions in ectopic lipid accumulation, since CA-treated mice lacked this effect. However, the normalization of blood glucose arises from combination of components from the two source plant materials as administration of either CA or RV resulted in hypoglycaemia. Interestingly, treatment with the CA + RV mixture, generated by mixing individually produced CA and RV plant extracts, resulted in hyperglycaemia, possibly due to drug-drug interactions of the blood glucose-reducing components in either plant extract. Hence, our data show that the best antidiabetic outcome results from the traditional practice of boiling R. vomitoria foliage and C. aurantium fruits together.
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Affiliation(s)
- Joan Campbell-Tofte
- Affiliated to Parker Institute, Frederiksberg Hospital, Nordre Fasanvej 57, 2000 Frederiksberg, Denmark.
| | - Huiling Mu
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
| | - Kaj Winther
- Department of Nutrition, Exercise and Sports, University of Copenhagen Rolighedsvej 26, 1958 Frederiksberg C, Denmark.
| | - Per Mølgaard
- Department of Drug Design and Pharmacology, Peptides and Proteins, Faculty of Health Sciences, University of Copenhagen, Jagtvej 162, Copenhagen, Denmark.
| | - Nicolas Belin
- Les Laboratoires Phytodia, 300 Boulevard Sébastien Brant, 67412 ILLKIRCH CEDEX, France.
| | - Knud Josefsen
- The Bartholin Institute, Rigshospitalet Department, 3733, Copenhagen Biocenter, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark.
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2
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Wu PQ, Liu ZD, Ren YH, Zhou JS, Liu QF, Wu Y, Zhang JL, Zhou B, Yue JM. Monoterpenoid indole alkaloids from Alstonia scholaris and their Toxoplasma gondii inhibitory activity. PHYTOCHEMISTRY 2024; 220:113993. [PMID: 38266954 DOI: 10.1016/j.phytochem.2024.113993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/26/2024]
Abstract
Nine previously unreported various types of monoterpenoid indole alkaloids, together with seven known analogues were isolated from the stem barks of Alstonia scholaris through a silica gel free methodology. The structures of 1-9 were elucidated by spectroscopic data analysis, electronic circular dichroism calculations, and single-crystal X-ray diffraction. Compound 1 is a modified echitamine-type alkaloid with a novel 6/5/5/7/6/6 hetero hexacyclic bridged ring system, and 8 and 9 exist as a zwitterion and trifluoroacetate salt, respectively. The anti-Toxoplasma activity of all isolates on infected Vero cells were evaluated, which revealed that compound 14 at 0.24 μM displayed potent activity. This study expanded the structural diversity of alkaloids of A. scholaris, and presented their potential application in anti-Toxoplasma drug development.
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Affiliation(s)
- Pei-Qian Wu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Zhen-Di Liu
- Health Science Center, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang, 315211, People's Republic of China
| | - Yu-Hao Ren
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Jun-Su Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Qun-Fang Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Yan Wu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China
| | - Ji-Li Zhang
- Health Science Center, Ningbo University, 818 Fenghua Road, Ningbo, Zhejiang, 315211, People's Republic of China
| | - Bin Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China; Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong, 264117, People's Republic of China.
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, People's Republic of China; Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong, 264117, People's Republic of China.
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3
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Zoua FA, Ntomi Djipmegne D, Kinyok MJ, Abouem A Zintchem A, Bitombo AN, Dongmo Zeukang R, Ferron S, Ngono Bikobo DS, Tomasi S, Pegnyemb DE. A lupeol derivative and other isolates with antiplasmodial activity from the stem root of Rauvolfia mannii Stapf. (Apocynaceae). Nat Prod Res 2024:1-5. [PMID: 38497278 DOI: 10.1080/14786419.2024.2327623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 02/27/2024] [Indexed: 03/19/2024]
Abstract
Rauvolfia mannii is a plant from western and eastern areas of African continent and is widely used in folk medicine for the treatment of various diseases including malaria. Herein, one previously undescribed acylated triterpene (1), together with five already published natural products (2-6) were removed from its roots. The chemical structures of these compounds were determined by spectroscopic and spectrometric means (NMR, HRESIMS, IR and UV). In addition to the isolated triterpenoids, components 5 and 6 are also newly reported from the genus Rauvolfia. Moreover, some constituents were further tested against the chloroquine-sensitive strain of P. falciparum (3D7). It has been found that 3 and 4 showed a moderate antiplasmodial activity with IC50 values of 46.25 and 39.79 µM respectively.
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Affiliation(s)
- Fred Alain Zoua
- Department of Organic Chemistry, Faculty of Sciences, University of Yaoundé 1, Yaoundé, Cameroon
| | - Daniela Ntomi Djipmegne
- Department of Organic Chemistry, Faculty of Sciences, University of Yaoundé 1, Yaoundé, Cameroon
| | - Mc Jésus Kinyok
- Department of Organic Chemistry, Faculty of Sciences, University of Yaoundé 1, Yaoundé, Cameroon
- Department of Chemistry, Higher Teachers Training College, University of Yaoundé 1, Yaoundé, Cameroon
| | - Auguste Abouem A Zintchem
- Department of Organic Chemistry, Faculty of Sciences, University of Yaoundé 1, Yaoundé, Cameroon
- Department of Chemistry, Higher Teachers Training College, University of Yaoundé 1, Yaoundé, Cameroon
| | - André Néhémie Bitombo
- Department of Organic Chemistry, Faculty of Sciences, University of Yaoundé 1, Yaoundé, Cameroon
| | - Rostanie Dongmo Zeukang
- Department of Organic Chemistry, Faculty of Sciences, University of Yaoundé 1, Yaoundé, Cameroon
| | - Solenn Ferron
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, UMR CNRS ISCR 6226, Rennes, France
| | - Dominique Serge Ngono Bikobo
- Department of Organic Chemistry, Faculty of Sciences, University of Yaoundé 1, Yaoundé, Cameroon
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, UMR CNRS ISCR 6226, Rennes, France
| | - Sophie Tomasi
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, UMR CNRS ISCR 6226, Rennes, France
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4
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Tung NKT, Dung DT, Kiem PV, Hang DTT, Nhiem NX, The NV, Seo Y, Kang JS, Tai BH. Alkaloids and Lignans from the Aerial Parts of Rauvolfia tetraphylla Inhibit NO Production in LPS-activated RAW 264.7 Cells. Chem Biodivers 2024; 21:e202302123. [PMID: 38253808 DOI: 10.1002/cbdv.202302123] [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: 12/29/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 01/24/2024]
Abstract
Three previously undescribed compounds named rauvolphyllas A-C (1-3), along with thirteen known compounds, 18β-hydroxy-3-epi-α-yohimbine (4), yohimbine (5), α-yohimbine (6), 17-epi-α-yohimbine (7), (E)-vallesiachotamine (8), (Z)-vallesiachotamine (9), 16S-E-isositsirikine (10), Nb -methylisoajimaline (11), Nb -methylajimaline (12), ajimaline (13), (+)-lyoniresinol 3α-O-β-D-glucopyranoside (14), (+)-isolarisiresinol 3α-O-β-D-glucopyranoside (15), and (-)-lyoniresinol 3α-O-β-D-glucopyranoside (16) were isolated from the aerial parts of Rauvolfia tetraphylla L. Their chemical structures were elucidated based on the extensive spectroscopic interpretation of HR-ESI-MS, 1D and 2D NMR spectra. The absolute configurations of 2 and 3 were determined by experimental ECD spectra. Compounds 5, 6, 7, and 11-13 exhibited nitric oxide production inhibition activity in LPS-activated RAW 264.7 cells with the IC50 values of 79.10, 44.34, 51.28, 33.54, 37.67, and 28.56 μM, respectively, compared to that of the positive control, dexamethasone, which showed IC50 value of 13.66 μM. The other isolates were inactive with IC50 values over 100 μM.
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Affiliation(s)
- Ninh Khac Thanh Tung
- College of Pharmacy, Chungnam National University, Daejeon, 305-764, Korea
- Center for High Technology Research and Development, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
| | - Duong Thi Dung
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
| | - Phan Van Kiem
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
| | - Dan Thi Thuy Hang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
| | - Nguyen Xuan Nhiem
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
| | - Nguyen Van The
- Traditional Medicine Hospital of Public Security Ministry of Vietnam, Hanoi, 10000, Vietnam
| | - Yohan Seo
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (KMEDIhub, 88 Dongnae-ro, Dong-gu, Daegu, Korea
| | - Jong Seong Kang
- College of Pharmacy, Chungnam National University, Daejeon, 305-764, Korea
| | - Bui Huu Tai
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 10072, Vietnam
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5
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DeMars MD, O’Connor SE. Evolution and diversification of carboxylesterase-like [4+2] cyclases in aspidosperma and iboga alkaloid biosynthesis. Proc Natl Acad Sci U S A 2024; 121:e2318586121. [PMID: 38319969 PMCID: PMC10873640 DOI: 10.1073/pnas.2318586121] [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: 10/24/2023] [Accepted: 01/04/2024] [Indexed: 02/08/2024] Open
Abstract
Monoterpene indole alkaloids (MIAs) are a large and diverse class of plant natural products, and their biosynthetic construction has been a subject of intensive study for many years. The enzymatic basis for the production of aspidosperma and iboga alkaloids, which are produced exclusively by members of the Apocynaceae plant family, has recently been discovered. Three carboxylesterase (CXE)-like enzymes from Catharanthus roseus and Tabernanthe iboga catalyze regio- and enantiodivergent [4+2] cycloaddition reactions to generate the aspidosperma (tabersonine synthase, TS) and iboga (coronaridine synthase, CorS; catharanthine synthase, CS) scaffolds from a common biosynthetic intermediate. Here, we use a combined phylogenetic and biochemical approach to investigate the evolution and functional diversification of these cyclase enzymes. Through ancestral sequence reconstruction, we provide evidence for initial evolution of TS from an ancestral CXE followed by emergence of CorS in two separate lineages, leading in turn to CS exclusively in the Catharanthus genus. This progression from aspidosperma to iboga alkaloid biosynthesis is consistent with the chemotaxonomic distribution of these MIAs. We subsequently generate and test a panel of chimeras based on the ancestral cyclases to probe the molecular basis for differential cyclization activity. Finally, we show through partial heterologous reconstitution of tabersonine biosynthesis using non-pathway enzymes how aspidosperma alkaloids could have first appeared as "underground metabolites" via recruitment of promiscuous enzymes from common protein families. Our results provide insight into the evolution of biosynthetic enzymes and how new secondary metabolic pathways can emerge through small but important sequence changes following co-option of preexisting enzymatic functions.
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Affiliation(s)
- Matthew D. DeMars
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena07745, Germany
| | - Sarah E. O’Connor
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena07745, Germany
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6
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Tang M, Lu H, Zu L. Collective total synthesis of stereoisomeric yohimbine alkaloids. Nat Commun 2024; 15:941. [PMID: 38296955 PMCID: PMC10830567 DOI: 10.1038/s41467-024-45140-2] [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: 08/29/2023] [Accepted: 01/16/2024] [Indexed: 02/02/2024] Open
Abstract
Stereoisomeric polycyclic natural products are important for drug discovery-based screening campaigns, due to the close correlation of stereochemistry with diversified bioactivities. Nature generates the stereoisomeric yohimbine alkaloids using bioavailable monoterpene secolaganin as the ten-carbon building block. In this work, we reset the stage by the development of a bioinspired coupling, in which the rapid construction of the entire pentacyclic skeleton and the complete control of all five stereogenic centers are achieved through enantioselective kinetic resolution of an achiral, easily accessible synthetic surrogate. The stereochemical diversification from a common intermediate allows for the divergent and collective synthesis of all four stereoisomeric subfamilies of yohimbine alkaloids through orchestrated tackling of thermodynamic and kinetic preference.
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Affiliation(s)
- Meiyi Tang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Beijing Frontier Research Center for Biological Structure, Tsinghua University, Beijing, 100084, China
| | - Haigen Lu
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Beijing Frontier Research Center for Biological Structure, Tsinghua University, Beijing, 100084, China
| | - Liansuo Zu
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Beijing Frontier Research Center for Biological Structure, Tsinghua University, Beijing, 100084, China.
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7
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de Sousa HM, da Silva AB, Ferreira MKA, da Silva AW, de Menezes JESA, Marinho ES, Marinho MM, Dos Santos HS, Pessoa ODL. Indole Alkaloids of Rauvolfia ligustrina and Their Anxiolytic Effects in Adult Zebrafish. PLANTA MEDICA 2023; 89:979-989. [PMID: 36940928 DOI: 10.1055/a-2058-3710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Rauvolfia species are well known as producers of bioactive monoterpene indole alkaloids, which exhibit a broad spectrum of biological activities. A new vobasine-sarpagan-type bisindole alkaloid (1: ) along with six known monomeric indoles (2, 3/4, 5: , and 6/7: ) were isolated from the ethanol extract of the roots of Rauvolfia ligustrina. The structure of the new compound was elucidated by interpretation of their spectroscopic data (1D and 2D NMR and HRESIMS) and comparison with published data for analog compounds. The cytotoxicity of the isolated compounds was screened in a zebrafish (Danio rerio) model. The possible GABAergic (diazepam as the positive control) and serotoninergic (fluoxetine as the positive control) mechanisms of action in adult zebrafish were also evaluated. No compounds were cytotoxic. Compound 2: and the epimers 3: /4: and 6: /7: showed a mechanism action by GABAA, while compound 1: showed a mechanism action by a serotonin receptor (anxiolytic activity). Molecular docking studies showed that compounds 2: and 5: have a greater affinity by the GABAA receptor when compared with diazepam, whereas 1: showed the best affinity for the 5HT2AR channel when compared to risperidone.
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Affiliation(s)
| | - Alison Batista da Silva
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza-CE, Brazil
| | | | | | | | - Emmanuel Silva Marinho
- Programa de Graduação em Ciências Naturais, Universidade Estadual de Ceará, Fortaleza-CE, Brazil
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8
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Jędrejko K, Catlin O, Stewart T, Anderson A, Muszyńska B, Catlin DH. Unauthorized ingredients in "nootropic" dietary supplements: A review of the history, pharmacology, prevalence, international regulations, and potential as doping agents. Drug Test Anal 2023. [PMID: 37357012 DOI: 10.1002/dta.3529] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 06/27/2023]
Abstract
The first nootropic prohibited in sport was fonturacetam (4-phenylpiracetam, carphedon) in 1998. Presented here 25 years later is a broad-scale consideration of the history, pharmacology, prevalence, regulations, and doping potential of nootropics viewed through a lens of 50 selected dietary supplements (DS) marketed as "cognitive enhancement," "brain health," "brain boosters," or "nootropics," with a focus on unauthorized ingredients. Nootropic DS have risen to prominence over the last decade often as multicomponent formulations of bioactive ingredients presenting compelling pharmacological questions and potential public health concerns. Many popular nootropics are unauthorized food or DS ingredients according to the European Commission including huperzine A, yohimbine, and dimethylaminoethanol; unapproved pharmaceuticals like phenibut or emoxypine (mexidol); previously registered drugs like meclofenoxate or reserpine; EU authorized pharmaceuticals like piracetam or vinpocetine; infamous doping agents like methylhexaneamine or dimethylbutylamine; and other investigational substances and peptides. Several are authorized DS ingredients in the United States resulting in significant global variability as to what qualifies as a legal nootropic. Prohibited stimulants or ß2-agonists commonly used in "pre-workout," "weight loss," or "thermogenic" DS such as octodrine, hordenine, or higenamine are often stacked with nootropic substances. While stimulants and ß2-agonists are defined as doping agents by the World Anti-Doping Agency (WADA), many nootropics are not, although some may qualify as non-approved substances or related substances under catch-all language in the WADA Prohibited List. Synergistic combinations, excessive dosing, or recently researched pharmacology may justify listing certain nootropics as doping agents or warrant additional attention in future regulations.
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Affiliation(s)
- Karol Jędrejko
- Faculty of Pharmacy, Department of Pharmaceutical Botany, Jagiellonian University Medical College, Kraków, Poland
| | - Oliver Catlin
- Banned Substances Control Group (BSCG), Los Angeles, California, USA
| | - Timothy Stewart
- Banned Substances Control Group (BSCG), Los Angeles, California, USA
| | - Ashley Anderson
- International Sports Pharmacists Network, Fort Collins, Colorado, USA
| | - Bożena Muszyńska
- Faculty of Pharmacy, Department of Pharmaceutical Botany, Jagiellonian University Medical College, Kraków, Poland
| | - Don H Catlin
- Banned Substances Control Group (BSCG), Los Angeles, California, USA
- Department of Medicine and Molecular and Medical Pharmacology, University of California Los Angeles (UCLA), Los Angeles, California, USA
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9
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Yang Y, Ding L, Zhou Y, Guo Z, Yu R, Zhu J. Establishment of recombinant Catharanthus roseus stem cells stably overexpressing ORCA4 for terpenoid indole alkaloids biosynthesis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 196:783-792. [PMID: 36848864 DOI: 10.1016/j.plaphy.2023.02.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/10/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Catharanthus roseus is a perennial herb of the Apocynaceae family, from which about 200 kinds of alkaloids have been characterized. Most alkaloids from C. roseus are terpenoid indole alkaloids (TIAs), such as vinblastine and vincristine, which are widely used in the clinic for their good antitumor activity. However, they were only biosynthesized in C. roseus, and their content in C. roseus is extremely low. The access to these valuable compounds is by plant extraction or chemical semisynthesis from their precursors catharanthine and vindoline. Since catharanthine and vindoline are also obtained from C. roseus, the supply of vinblastine and vincristine makes it difficult to meet market demands. Therefore, how to improve the yield of TIAs is an attractive issue. In this study, we compared the regulatory effect of two critical transcription factors, octadecanoid-derivative responsive Catharanthus AP2-domain protein 3 (ORCA3) and octadecanoid-derivative responsive Catharanthus AP2-domain protein 4 (ORCA4), on the biosynthesis of TIAs in C. roseus. The results showed that overexpressing both two transcription factors could increase the accumulation of TIAs. The effect was more significant when ORCA4 was overexpressed. To acquire C. roseus TIAs on a continuous and consistent basis, we then created and acquired C. roseus stem cells stably overexpressing ORCA4. This is the first time a recombinant C. roseus stem cell system with stable ORCA4 overexpression has been developed, which not only provides new ideas for future research in this area but also breaches new life into the industrial application of using plant cell culture to obtain natural products.
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Affiliation(s)
- Yuanjian Yang
- Biotechnological Institute of Chinese Materia Medica, Jinan University, Guangzhou, 510632, China
| | - Liuyu Ding
- Department of Natural Product Chemistry, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Ying Zhou
- Department of Natural Product Chemistry, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Zizheng Guo
- Biotechnological Institute of Chinese Materia Medica, Jinan University, Guangzhou, 510632, China
| | - Rongmin Yu
- Biotechnological Institute of Chinese Materia Medica, Jinan University, Guangzhou, 510632, China; Department of Natural Product Chemistry, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China.
| | - Jianhua Zhu
- Biotechnological Institute of Chinese Materia Medica, Jinan University, Guangzhou, 510632, China.
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10
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Shi BB, Zhang GR, Li ZH, Liu JK. Three new oxygenated yohimbane-type alkaloids from Ophiorrhiza japonica. Fitoterapia 2023; 166:105442. [PMID: 36746209 DOI: 10.1016/j.fitote.2023.105442] [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] [Received: 12/28/2022] [Revised: 01/29/2023] [Accepted: 01/30/2023] [Indexed: 02/08/2023]
Abstract
A series of oxygenated yohimbane alkaloids, including three new compounds, ophiorrhines H-J (1-3), and seven known compounds, were isolated from the aerial parts of Ophiorrhiza japonica. The structures with absolute configurations were elucidated by extensive MS and NMR spectroscopic methods, as well as the single crystal X-ray diffraction and ECD calculations. Ophiorrhines H (1) and I (2) represent key oxygenated intermediates in the formation of aromatic ring E in the demethoxycarbonyl-3,14-dihydrogambirtannine (10). Ophiorrhine J (3) is a highly oxidized yohimbane derivative with the planar superconjugated system. The cytotoxic activities of all alkaloids against five human cancer cell lines were evaluated.
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Affiliation(s)
- Bao-Bao Shi
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Guang-Ru Zhang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Zheng-Hui Li
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China.
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China.
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