101
|
Traditional Medicinal Plants as a Source of Antituberculosis Drugs: A System Review. BIOMED RESEARCH INTERNATIONAL 2021; 2021:9910365. [PMID: 34541000 PMCID: PMC8448615 DOI: 10.1155/2021/9910365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 08/09/2021] [Indexed: 12/02/2022]
Abstract
Medicinal plants are the chief components in the different oriental formulations in different traditional medical systems worldwide. As a thriving source of medicine, the medicinal plants with antituberculosis (TB) properties inspire the pharmacists to develop new drugs based on their active components or semimetabolites. In the present review, the anti-TB medicinal plants were screened from the scientific literatures, based on the botanical classification and the anti-TB activity. The obtained anti-TB medicinal plants were categorized into three different categories, viz., 159 plants critically examined with a total 335 isolated compounds, 131 plants with their crude extracts showing anti-TB activity, and 27 plants in literature with the prescribed formula by the traditional healers. Our systemic analysis on the medicinal plants can assist the discovery of novel and more efficacious anti-TB drugs.
Collapse
|
102
|
Patil VM, Masand N, Verma S, Masand V. Chromones: Privileged scaffold in anticancer drug discovery. Chem Biol Drug Des 2021; 98:943-953. [PMID: 34519163 DOI: 10.1111/cbdd.13951] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/02/2021] [Accepted: 09/06/2021] [Indexed: 12/16/2022]
Abstract
In the design and discovery of anticancer drugs, various natural heterocyclic scaffolds have attracted considerable interest as privileged structures. For rational drug design, some of the natural scaffolds such as chromones have exhibited wide acceptability due to their drug-like properties. Among the approved anticancer drugs, the scaffolds with high selectivity for a small group of closely related targets are of importance. In the development of selective anticancer agents, the natural, as well as synthetic, can generate highly selective compounds toward cancer targets. The present manuscript includes more particularly the development of cancer inhibitors incorporating the chromone scaffold, with a strong emphasis on their molecular interactions in the anticancer mechanism. It also includes the structure-activity relationship studies and related examples of lead optimization.
Collapse
Affiliation(s)
- Vaishali M Patil
- Department of Pharmaceutical Chemistry, KIET School of Pharmacy, KIET Group of Institutions, Delhi-NCR, Ghaziabad, India
| | - Neeraj Masand
- Department of Pharmacy, Lala Lajpat Rai Memorial Medical College, Meerut, Uttar Pradesh, India
| | - Saroj Verma
- Department of Pharmaceutical Chemistry, SGT University, Gurugram, Haryana, India
| | - Vijay Masand
- Department of Chemistry, Vidya Bharati College, Amravati, Maharashtra, India
| |
Collapse
|
103
|
Analytical Methods for Exploring Nutraceuticals Based on Phenolic Acids and Polyphenols. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11188276] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Phenolic compounds such as phenolic acids, flavonoids, and stilbenes comprise an enormous family of bioactive molecules with a range of positive properties, including antioxidant, antimicrobial, or anti-inflammatory effects. As a result, plant extracts are often purified to recover phenolic compound-enriched fractions to be used to develop nutraceutical products or dietary supplements. In this article, we review the properties of some remarkable plant-based nutraceuticals in which the active molecules are mainly polyphenols and related compounds. Methods for the characterization of these extracts, the chemical determination of the bioactivities of key molecules, and the principal applications of the resulting products are discussed in detail.
Collapse
|
104
|
Sakalauskas A, Ziaunys M, Snieckute R, Smirnovas V. Autoxidation Enhances Anti-Amyloid Potential of Flavone Derivatives. Antioxidants (Basel) 2021; 10:antiox10091428. [PMID: 34573060 PMCID: PMC8465893 DOI: 10.3390/antiox10091428] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 02/07/2023] Open
Abstract
The increasing prevalence of amyloid-related disorders, such as Alzheimer's or Parkinson's disease, raises the need for effective anti-amyloid drugs. It has been shown on numerous occasions that flavones, a group of naturally occurring anti-oxidants, can impact the aggregation process of several amyloidogenic proteins and peptides, including amyloid-beta. Due to flavone autoxidation at neutral pH, it is uncertain if the effective inhibitor is the initial molecule or a product of this reaction, as many anti-amyloid assays attempt to mimic physiological conditions. In this work, we examine the aggregation-inhibiting properties of flavones before and after they are oxidized. The oxidation of flavones was monitored by measuring the UV-vis absorbance spectrum change over time. The protein aggregation kinetics were followed by measuring the amyloidophilic dye thioflavin-T (ThT) fluorescence intensity change. Atomic force microscopy was employed to image the aggregates formed with the most prominent inhibitors. We demonstrate that flavones, which undergo autoxidation, have a far greater potency at inhibiting the aggregation of both the disease-related amyloid-beta, as well as a model amyloidogenic protein-insulin. Oxidized 6,2',3'-trihydroxyflavone was the most potent inhibitor affecting both insulin (7-fold inhibition) and amyloid-beta (2-fold inhibition). We also show that this tendency to autoxidize is related to the positions of the flavone hydroxyl groups.
Collapse
|
105
|
Dias MC, Pinto DCGA, Silva AMS. Plant Flavonoids: Chemical Characteristics and Biological Activity. Molecules 2021; 26:molecules26175377. [PMID: 34500810 PMCID: PMC8434187 DOI: 10.3390/molecules26175377] [Citation(s) in RCA: 296] [Impact Index Per Article: 98.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/20/2021] [Accepted: 09/01/2021] [Indexed: 12/11/2022] Open
Abstract
In recent years, more attention has been paid to natural sources of antioxidants. Flavonoids are natural substances synthesized in several parts of plants that exhibit a high antioxidant capacity. They are a large family, presenting several classes based on their basic structure. Flavonoids have the ability to control the accumulation of reactive oxygen species (ROS) via scavenger ROS when they are formed. Therefore, these antioxidant compounds have an important role in plant stress tolerance and a high relevance in human health, mainly due to their anti-inflammatory and antimicrobial properties. In addition, flavonoids have several applications in the food industry as preservatives, pigments, and antioxidants, as well as in other industries such as cosmetics and pharmaceuticals. However, flavonoids application for industrial purposes implies extraction processes with high purity and quality. Several methodologies have been developed aimed at increasing flavonoid extraction yield and being environmentally friendly. This review presents the most abundant natural flavonoids, their structure and chemical characteristics, extraction methods, and biological activity.
Collapse
Affiliation(s)
- Maria Celeste Dias
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- LAQV/REQUIMTE, Department of Chemistry, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal; (D.C.G.A.P.); (A.M.S.S.)
- Correspondence: ; Tel.: +351-239-240-752
| | - Diana C. G. A. Pinto
- LAQV/REQUIMTE, Department of Chemistry, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal; (D.C.G.A.P.); (A.M.S.S.)
| | - Artur M. S. Silva
- LAQV/REQUIMTE, Department of Chemistry, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal; (D.C.G.A.P.); (A.M.S.S.)
| |
Collapse
|
106
|
Fasae KD, Abolaji AO, Faloye TR, Odunsi AY, Oyetayo BO, Enya JI, Rotimi JA, Akinyemi RO, Whitworth AJ, Aschner M. Metallobiology and therapeutic chelation of biometals (copper, zinc and iron) in Alzheimer's disease: Limitations, and current and future perspectives. J Trace Elem Med Biol 2021; 67:126779. [PMID: 34034029 DOI: 10.1016/j.jtemb.2021.126779] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 04/03/2021] [Accepted: 05/10/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most prevalent cause of cognitive impairment and dementia worldwide. The pathobiology of the disease has been studied in the form of several hypotheses, ranging from oxidative stress, amyloid-beta (Aβ) aggregation, accumulation of tau forming neurofibrillary tangles (NFT) through metal dysregulation and homeostasis, dysfunction of the cholinergic system, and to inflammatory and autophagic mechanism. However, none of these hypotheses has led to confirmed diagnostics or approved cure for the disease. OBJECTIVE This review is aimed as a basic and an encyclopedic short course into metals in AD and discusses the advances in chelation strategies and developments adopted in the treatment of the disease. Since there is accumulating evidence of the role of both biometal dyshomeostasis (iron (Fe), copper (Cu), and zinc (Zn)) and metal-amyloid interactions that lead to the pathogenesis of AD, this review focuses on unraveling therapeutic chelation strategies that have been considered in the treatment of the disease, aiming to sequester free and protein-bound metal ions and reducing cerebral metal burden. Promising compounds possessing chemically modified moieties evolving as multi-target ligands used as anti-AD drug candidates are also covered. RESULTS AND CONCLUSION Several multidirectional and multifaceted studies on metal chelation therapeutics show the need for improved synthesis, screening, and analysis of compounds to be able to effectively present chelating anti-AD drugs. Most drug candidates studied have limitations in their physicochemical properties; some enhance redistribution of metal ions, while others indirectly activate signaling pathways in AD. The metal chelation process in vivo still needs to be established and the design of potential anti-AD compounds that bi-functionally sequester metal ions as well as inhibit the Aβ aggregation by competing with the metal ions and reducing metal-induced oxidative damage and neurotoxicity may signal a bright end in chelation-based therapeutics of AD.
Collapse
Affiliation(s)
- Kehinde D Fasae
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria
| | - Amos O Abolaji
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria.
| | - Tolulope R Faloye
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria
| | - Atinuke Y Odunsi
- Department of Biochemistry, Molecular Drug Metabolism and Toxicology Unit, College of Medicine, University of Ibadan, Nigeria
| | - Bolaji O Oyetayo
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Nigeria
| | - Joseph I Enya
- Department of Anatomy, University of Ilorin, Kwara State, Nigeria
| | - Joshua A Rotimi
- Department of Biochemistry and Molecular Biology, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Rufus O Akinyemi
- Neuroscience and Ageing Research Unit, Institute for Advanced Medical Research and Training, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | | | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA.
| |
Collapse
|
107
|
Lin HH, Hsieh MC, Wang CP, Yu PR, Lee MS, Chen JH. Anti-Atherosclerotic Effect of Gossypetin on Abnormal Vascular Smooth Muscle Cell Proliferation and Migration. Antioxidants (Basel) 2021; 10:antiox10091357. [PMID: 34572989 PMCID: PMC8470489 DOI: 10.3390/antiox10091357] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/20/2021] [Accepted: 08/24/2021] [Indexed: 02/07/2023] Open
Abstract
Gossypetin (GTIN), known as 3,5,7,8,3′,4′-hexahydroxyflavone, has been demonstrated to exert anti-atherosclerotic potential against apoptotic injury in oxidized low-density lipoprotein-incubated endothelial cells, and atherosclerotic lesions of cholesterol-fed rabbits. However, the effect and underlying mechanism of GTIN on abnormal vascular smooth muscle cells (VSMCs) proliferation and migration, a major event in the pathogenesis of atherosclerosis, is still unknown. In this study, non-cytotoxic doses of GTIN abolished the VSMCs A7r5 proliferation and cell-cycle S phase distribution. The GTIN-arrested G0/G1 phase might be performed by increasing the expressions of phosphorylated p53 and its downstream molecules that inhibit the activation of cyclin E/cyclin-dependent kinase (cdk)-2, blocking retinoblastoma protein (Rb) phosphorylation and the subsequent dissociation of Rb/transcription factor E2F1 complex. In addition, the results indicated that GTIN inhibited VSMCs wound-healing and migratory abilities through reducing matrix metalloproteinase (MMP)-9 activity and expression, as well as down-regulating protein kinase B (PKB)/nuclear factor-kappaB (NF-κB) signaling. GTIN also revealed potential in diminishing reactive oxygen species (ROS) generation. These findings suggested the inhibitory effects of GTIN on VSMCs dysfunction could likely lead to the containment of atherosclerosis and other cardiovascular illness.
Collapse
Affiliation(s)
- Hui-Hsuan Lin
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (H.-H.L.); (M.-C.H.); (C.-P.W.)
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Ming-Chang Hsieh
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (H.-H.L.); (M.-C.H.); (C.-P.W.)
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Chi-Ping Wang
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (H.-H.L.); (M.-C.H.); (C.-P.W.)
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
| | - Pei-Rong Yu
- Department of Nutrition, Chung Shan Medical University, Taichung City 40201, Taiwan;
| | - Ming-Shih Lee
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung City 40201, Taiwan; (H.-H.L.); (M.-C.H.); (C.-P.W.)
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
- Correspondence: (M.-S.L.); (J.-H.C.); Tel.: +886-424-730-022 (ext. 12404) (M.-S.L.); +886-424-730-022 (ext. 12195) (J.-H.C.)
| | - Jing-Hsien Chen
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City 40201, Taiwan
- Department of Nutrition, Chung Shan Medical University, Taichung City 40201, Taiwan;
- Correspondence: (M.-S.L.); (J.-H.C.); Tel.: +886-424-730-022 (ext. 12404) (M.-S.L.); +886-424-730-022 (ext. 12195) (J.-H.C.)
| |
Collapse
|
108
|
Gok I. Functional Potential of Several Turkish Fermented Traditional Foods: Biotic Properties, Bioactive Compounds, and Health Benefits. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1962340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ilkay Gok
- Faculty of Applied Sciences, Gastronomy Department, Istanbul Okan University, Tuzla, Istanbul, Turkey
| |
Collapse
|
109
|
Su L, Li W, Liu K, Wang Q. Synthesis and anti-proliferative activities of 5,6,7-trimethoxyflavones and their derivatives. Nat Prod Res 2021; 36:4070-4075. [PMID: 34353180 DOI: 10.1080/14786419.2021.1961136] [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: 10/20/2022]
Abstract
A series of 5,6,7-trimethoxyflavones 1a-1g and their derivatives 2a-2g, 3a-3d, 4 and 5, including the natural products 5,6,7-trimethoxy-4'-hydroxyflavone (1a), 5,6,7,3',4' -pentamethoxyflavone (sinensetin, 1 b), 5,6,7-trimethoxy-3',4'-methyl enedioxy flavone (1c), 5,6,7,3'-tetramethoxy-4,5'-methylenedioxyflavone (1e), 5,6,7, 3',4',5'-hextamethoxyflavone (1 g), 5-hydroxy-3,4,2',3',4'-pentamethoxy chal-cone (2 b), 5,4'-dihydroxy-6,7-dimethoxy flavone (cirsimaritin, 3a) and 5-hydroxy-6,7,3', 4'-tetramethoxyflavone (5-demethylsinensetin, 3 b), 3,5,6,7,3',4'-hexamethoxyflavone (3-methoxysinensetin, 4) and 5'-hydroxy-3,6,7,3',4'-pentamethoxyflavone (5) were synthesized. Their anti-proliferative activity in vitro was evaluated against a panel of four human cancer cell lines (Aspc-1, HCT-116, HepG-2 and SUN-5) by the CTG assay. The results showed that most of the synthetic compounds exhibited moderate to high anti-proliferative activities. In particular, compound 3c possess IC50 (5.30 μM) values below 10 μM against Aspc-1 cells and are worthy of further investigation.
Collapse
Affiliation(s)
- Liang Su
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, China
| | - Wei Li
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, China
| | - Kexiong Liu
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, China
| | - Qiuan Wang
- College of Chemistry and Chemical Engineering, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, China
| |
Collapse
|
110
|
Hu L, Wang C, Guo X, Chen D, Zhou W, Chen X, Zhang Q. Flavonoid Levels and Antioxidant Capacity of Mulberry Leaves: Effects of Growth Period and Drying Methods. FRONTIERS IN PLANT SCIENCE 2021; 12:684974. [PMID: 34421942 PMCID: PMC8371438 DOI: 10.3389/fpls.2021.684974] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
In recent years, various mulberry leaf dishes have gradually gained in popularity. The harvesting period of mulberry leaves and the preparation of dried samples are critical for the retention of flavonoid content and activity. In this study, changes in flavonoid levels in mulberry leaves during their growth period (3-6 months), and the effects of four different drying methods [sun drying (SD), air drying (AD), oven drying (OD), and freeze drying (FD)] on flavonoid accumulation and antioxidant capacity were determined. The results showed that mulberry leaves grown for 6 months had higher levels of flavonoids, and different drying methods could significantly affect the flavonoid levels and antioxidant capacity of the leaves. Air drying and FD were the best methods in terms of retaining the antioxidant activity of flavonoids, although AD had lower operating costs than FD in the production process. Therefore, to obtain a high flavonoid content and maximum antioxidant activity, AD is recommended for mulberry leaves.
Collapse
Affiliation(s)
- Lei Hu
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, China
| | - Cheng Wang
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, China
| | - Xiang Guo
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, China
| | - Dekui Chen
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, China
| | - Wei Zhou
- Guangdong Research and Development Center of Modern Agriculture (Woody Forage) Industrial Technology, South China Agricultural University, Guangzhou, China
| | - Xiaoyang Chen
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Qing Zhang
- College of Forestry and Landscape Architecture, Guangdong Province Research Center of Woody Forage Engineering Technology, South China Agricultural University, Guangzhou, China
| |
Collapse
|
111
|
Natural products from Brazilian biodiversity identified as potential inhibitors of PknA and PknB of M. tuberculosis using molecular modeling tools. Comput Biol Med 2021; 136:104694. [PMID: 34365277 DOI: 10.1016/j.compbiomed.2021.104694] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/07/2021] [Accepted: 07/23/2021] [Indexed: 11/21/2022]
Abstract
Mycobacterium tuberculosis was discovered in 1882 by Robert Koch but, since its discovery, the tuberculosis (TB) epidemic has endured, being one of the top 10 causes of death worldwide. Drug-resistant TB continues to be a public health threat and bioactive compounds with a new mode of action (MoA) are needed to overcome this. Since natural products are described as important sources for the development of new drugs, the objective of this work was to identify potential ligands from Brazilian natural products (NPs) for M. tuberculosis targets using molecular modeling tools. Using chemogenomics we identified the Serine/Threonine Protein Kinase PknB as a putative target for 13 NPs from a database from Brazilian biodiversity (NuBBE). Literature data supported further investigation of NuBBE105, NuBBE598, NuBBE936, NuBBE964, NuBBE1045, and NuBBE1180 by molecular docking and dynamics. Key interactions were observed with PknB and simulations confirmed stability and favorable binding energies. Considering structural similarity with PknB, we further explored binding of the NPs to PknA, critical for M. tuberculosis survival, and all of them resembled important interactions with the enzyme, showing stable and favorable binding energies, whilst van der Waals interactions seem to play a key role for binding to PknA and PknB. NuBBE936 and NuBBE1180 have already had their antimycobacterial activity reported and our results can provide a basis for their MoA. Finally, the other NPs which have not been tested against M. tuberculosis deserve further investigation, aiming at the discovery of antimycobacterial drug candidates with innovative MoA.
Collapse
|
112
|
Silva-Silva JV, Moragas-Tellis CJ, Chagas MDSDS, de Souza PVR, de Souza CDSF, Hardoim DDJ, Taniwaki NN, Moreira DDL, Dutra Behrens M, Calabrese KDS, Almeida-Souza F. Antileishmanial Activity of Flavones-Rich Fraction From Arrabidaea chica Verlot (Bignoniaceae). Front Pharmacol 2021; 12:703985. [PMID: 34354593 PMCID: PMC8329660 DOI: 10.3389/fphar.2021.703985] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 07/06/2021] [Indexed: 12/15/2022] Open
Abstract
Acknowledging the need of identifying new compounds for the treatment of leishmaniasis, this study aimed to evaluate, from in vitro trials, the activity of flavones from Arrabidaea chica against L. amazonensis. The chromatographic profiles of the hydroethanolic extract and a flavone-rich fraction (ACFF) from A. chica were determined by high-performance liquid chromatography coupled with a diode-array UV-Vis detector (HPLC-DAD-UV) and electrospray ionization mass spectrometry in tandem (LC-ESI-MS-MS). The flavones luteolin (1) and apigenin (2), isolated from chromatographic techniques and identified by Nuclear Magnetic Resonance of 1H and 13C, were also quantified in ACFF, showing 190.7 mg/g and apigenin 12.4 mg/g, respectively. The other flavones were identified by comparing their spectroscopic data with those of the literature. The in vitro activity was assayed against promastigotes and intramacrophagic amastigote forms of L. amazonensis. Cytotoxicity tests were performed with peritoneal macrophages of BALB/c mice. Nitrite quantification was performed with Griess reagent. Ultrastructural investigations were obtained by transmission electron microscopy. Anti-Leishmania assays indicated that the IC50 values for ACFF, apigenin, and luteolin were obtained at 40.42 ± 0.10 and 31.51 ± 1.13 μg/mL against promastigotes, respectively. ACFF and luteolin have concentration-dependent cytotoxicity. ACFF and luteolin also inhibited the intra-macrophagic parasite (IC50 3.575 ± 1.13 and 11.78 ± 1.24 μg/mL, respectively), with a selectivity index of 11.44 for ACFF. Promastigotes exposed to ACFF and luteolin exhibited ultrastructural changes, such as intense cytoplasm vacuolization and mitochondrial swelling. These findings data evidence the antileishmanial action of flavone-rich fractions of A. chica against L. amazonensis, encouraging further studies.
Collapse
Affiliation(s)
- João Victor Silva-Silva
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Carla Junqueira Moragas-Tellis
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Maria do Socorro Dos Santos Chagas
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Paulo Victor Ramos de Souza
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,Student on Postgraduate Program in Translational Research in Drugs and Medicines, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Daiana de Jesus Hardoim
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Davyson de Lima Moreira
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Maria Dutra Behrens
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Kátia da Silva Calabrese
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Fernando Almeida-Souza
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,Postgraduate in Animal Science, State University of Maranhão, São Luís, Brazil
| |
Collapse
|
113
|
Wang X, Cao Y, Chen S, Lin J, Bian J, Huang D. Anti-Inflammation Activity of Flavones and Their Structure-Activity Relationship. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7285-7302. [PMID: 34160206 DOI: 10.1021/acs.jafc.1c02015] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Flavones are an important class of bioactive constituents in foods, and their structural diversity enables them to interact with different targets. In particular, flavones are known for their anti-inflammatory activity. Herein, we summarized commonly applied in vitro, in vivo, and clinical models in testing anti-inflammatory activity of flavones. The anti-inflammatory structure-activity relationship of flavones was systematically mapped and supported with cross comparisons of that with flavanones, flavanols, and isoflavones. Hydroxyl groups (-OH) are indispensable for the anti-inflammatory function of flavones, and -OH at the C-5 and C-4' positions enhance while -OH at the C-6, C-7, C-8, and C-3' positions attenuate their activity. Moreover, the C2-C3 single bond, -OH at the C-3 and B-ring positions undermine flavone aglycones' activity. Most of the flavone aglycones function through NF-κB, MAPK, and JNK-STAT pathways, and their possible cell binding targets are kinase, aryl hydrocarbon receptor (AhR), G-protein coupled receptors, and estrogen receptors. However, the structure and anti-inflammatory activity relationship of flavones were unclear, and further research shall be conducted to close the gap in order to guide development of evidence-based functional foods.
Collapse
Affiliation(s)
- Xiang Wang
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore, 117542
| | - Yujia Cao
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore, 117542
| | - Siyu Chen
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore, 117542
| | - Jiachen Lin
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore, 117542
| | - Jinsong Bian
- Department of Pharmacology, School of Medicine, Southern University of Science and Technology, Shenzhen 518055, PR China
- National University of Singapore (Suzhou) Research Institute, 377 Linquan Street, Suzhou 215123, PR China
| | - Dejian Huang
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore, 117542
- National University of Singapore (Suzhou) Research Institute, 377 Linquan Street, Suzhou 215123, PR China
| |
Collapse
|
114
|
Multi-target Natural and Nature-Inspired Compounds against Neurodegeneration: A Focus on Dual Cholinesterase and Phosphodiesterase Inhibitors. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11115044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Alzheimer’s disease is a memory-related neurodegenerative condition leading to cognitive impairment. Cholinergic deficit, together with other underlying mechanisms, leads the to onset and progression of the disease. Consequently, acetylcholinesterase inhibitors are used for the symptomatic treatment of dementia, even if limited efficacy is observed. More recently, some specific phosphodiesterase isoforms emerged as promising, alternative targets for developing inhibitors to contrast neurodegeneration. Phosphodiesterase isoforms 4, 5 and 9 were found to be expressed in brain regions that are relevant for cognition. Given the complex nature of Alzheimer’s disease and the combination of involved biochemical mechanisms, the development of polypharmacological agents acting on more than one pathway is desirable. This review provides an overview of recent reports focused on natural and Nature-inspired small molecules, or plant extracts, acting as dual cholinesterase and phosphodiesterase inhibitors. In the context of the multi-target directed ligand approach, such molecules would pave the way for the development of novel agents against neurodegeneration. More precisely, according to the literature data, xanthines, other alkaloids, flavonoids, coumarins and polyphenolic acids represent promising scaffolds for future optimization.
Collapse
|
115
|
Comparison of Nonheme Manganese- and Iron-Containing Flavone Synthase Mimics. Molecules 2021; 26:molecules26113220. [PMID: 34072092 PMCID: PMC8198008 DOI: 10.3390/molecules26113220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 11/24/2022] Open
Abstract
Heme and nonheme-type flavone synthase enzymes, FS I and FS II are responsible for the synthesis of flavones, which play an important role in various biological processes, and have a wide range of biomedicinal properties including antitumor, antimalarial, and antioxidant activities. To get more insight into the mechanism of this curious enzyme reaction, nonheme structural and functional models were carried out by the use of mononuclear iron, [FeII(CDA-BPA*)]2+ (6) [CDA-BPA = N,N,N’,N’-tetrakis-(2-pyridylmethyl)-cyclohexanediamine], [FeII(CDA-BQA*)]2+ (5) [CDA-BQA = N,N,N’,N’-tetrakis-(2-quinolilmethyl)-cyclohexanediamine], [FeII(Bn-TPEN)(CH3CN)]2+ (3) [Bn-TPEN = N-benzyl-N,N’,N’-tris(2-pyridylmethyl)-1,2-diaminoethane], [FeIV(O)(Bn-TPEN)]2+ (9), and manganese, [MnII(N4Py*)(CH3CN)]2+ (2) [N4Py* = N,N-bis(2-pyridylmethyl)-1,2-di(2-pyridyl)ethylamine)], [MnII(Bn-TPEN)(CH3CN)]2+ (4) complexes as catalysts, where the possible reactive intermediates, high-valent FeIV(O) and MnIV(O) are known and well characterised. The results of the catalytic and stoichiometric reactions showed that the ligand framework and the nature of the metal cofactor significantly influenced the reactivity of the catalyst and its intermediate. Comparing the reactions of [FeIV(O)(Bn-TPEN)]2+ (9) and [MnIV(O)(Bn-TPEN)]2+ (10) towards flavanone under the same conditions, a 3.5-fold difference in reaction rate was observed in favor of iron, and this value is three orders of magnitude higher than was observed for the previously published [FeIV(O)(N2Py2Q*)]2+ [N,N-bis(2-quinolylmethyl)-1,2-di(2-pyridyl)ethylamine] species.
Collapse
|
116
|
DeRango-Adem EF, Blay J. Does Oral Apigenin Have Real Potential for a Therapeutic Effect in the Context of Human Gastrointestinal and Other Cancers? Front Pharmacol 2021; 12:681477. [PMID: 34084146 PMCID: PMC8167032 DOI: 10.3389/fphar.2021.681477] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/30/2021] [Indexed: 01/16/2023] Open
Abstract
Apigenin (4′, 5, 7-trihydroxyflavone) is a plant flavone that has been found to have various actions against cancer cells. We evaluated available evidence to determine whether it is feasible for apigenin to have such effects in human patients. Apigenin taken orally is systemically absorbed and recirculated by enterohepatic and local intestinal pathways. Its bioavailability is in the region of 30%. Once absorbed from the oral route it reaches maximal circulating concentration (Cmax) after a time (Tmax) of 0.5–2.5h, with an elimination half-life (T1/2) averaging 2.52 ± 0.56h. Using a circulating concentration for efficacy of 1–5μmol/L as the target, we evaluated data from both human and rodent pharmacokinetic studies to determine if a therapeutic concentration would be feasible. We find that oral intake of dietary materials would require heroic ingestion amounts and is not feasible. However, use of supplements of semi-purified apigenin in capsule form could reach target blood levels using amounts that are within the range currently acceptable for other supplements and medications. Modified formulations or parenteral injection are suitable but may not be necessary. Further work with direct studies of pharmacokinetics and clinical outcomes are necessary to fully evaluate whether apigenin will contribute to a useful clinical strategy, but given emerging evidence that it may interact beneficially with chemotherapeutic drugs, this is worthy of emphasis. In addition, more effective access to intestinal tissues from the oral route raises the possibility that apigenin may be of particular relevance to gastrointestinal disorders including colorectal cancer.
Collapse
Affiliation(s)
| | - Jonathan Blay
- School of Pharmacy, University of Waterloo, Waterloo, ON, Canada.,Department of Pathology, Dalhousie University, Halifax, NS, Canada
| |
Collapse
|
117
|
Menezes JCJMDS, Campos VR. Natural biflavonoids as potential therapeutic agents against microbial diseases. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 769:145168. [PMID: 33493916 DOI: 10.1016/j.scitotenv.2021.145168] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
Microbes broadly constitute several organisms like viruses, protozoa, bacteria, and fungi present in our biosphere. Fast-paced environmental changes have influenced contact of human populations with newly identified microbes resulting in diseases that can spread quickly. These microbes can cause infections like HIV, SARS-CoV2, malaria, nosocomial Escherichia coli, methicillin-resistant Staphylococcus aureus (MRSA), or Candida infection for which there are no available vaccines/drugs or are less efficient to prevent or treat these infections. In the pursuit to find potential safe agents for therapy of microbial infections, natural biflavonoids like amentoflavone, tetrahydroamentoflavone, ginkgetin, bilobetin, morelloflavone, agathisflavone, hinokiflavone, Garcinia biflavones 1 (GB1), Garcinia biflavones 2 (GB2), robustaflavone, strychnobiflavone, ochnaflavone, dulcisbiflavonoid C, tetramethoxy-6,6″-bigenkwanin and other derivatives isolated from several species of plants can provide effective starting points and become a source of future drugs. These biflavonoids show activity against influenza, severe acute respiratory syndrome (SARS), dengue, HIV-AIDS, coxsackieviral, hepatitis, HSV, Epstein-Barr virus (EBV), protozoal (Leishmaniasis, Malaria) infections, bacterial and fungal infections. Some of the biflavonoids can provide antiviral and protozoal activity by inhibition of neuraminidase, chymotrypsin-like protease, DV-NS5 RNA dependant RNA polymerase, reverse transcriptase (RT), fatty acid synthase, DNA polymerase, UL54 gene expression, Epstein-Barr virus early antigen activation, recombinant cysteine protease type 2.8 (r-CPB2.8), Plasmodium falciparum enoyl-acyl carrier protein (ACP) reductase or cause depolarization of parasitic mitochondrial membranes. They may also provide anti-inflammatory therapeutic activity against the infection-induced cytokine storm. Considering the varied bioactivity of these biflavonoids against these organisms, their structure-activity relationships are derived and wherever possible compared with monoflavones. Overall, this review aims to highlight these natural biflavonoids and briefly discuss their sources, reported mechanism of action, pharmacological uses, and comment on resistance mechanism, flavopiridol repurposing and the bioavailability aspects to provide a starting point for anti-microbial research in this area.
Collapse
Affiliation(s)
- José C J M D S Menezes
- Section of Functional Morphology, Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki 859-3298, Japan.
| | - Vinícius R Campos
- Department of Organic Chemistry, Institute of Chemistry, Fluminense Federal University, Campus do Valonguinho, 24020-141 Niterói, Rio de Janeiro, Brazil
| |
Collapse
|
118
|
Lopes-Coelho F, Martins F, Hipólito A, Mendes C, Sequeira CO, Pires RF, Almeida AM, Bonifácio VDB, Pereira SA, Serpa J. The Activation of Endothelial Cells Relies on a Ferroptosis-Like Mechanism: Novel Perspectives in Management of Angiogenesis and Cancer Therapy. Front Oncol 2021; 11:656229. [PMID: 34041026 PMCID: PMC8141735 DOI: 10.3389/fonc.2021.656229] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/21/2021] [Indexed: 12/12/2022] Open
Abstract
The activation of endothelial cells (ECs) is a crucial step on the road map of tumor angiogenesis and expanding evidence indicates that a pro-oxidant tumor microenvironment, conditioned by cancer metabolic rewiring, is a relevant controller of this process. Herein, we investigated the contribution of oxidative stress-induced ferroptosis to ECs activation. Moreover, we also addressed the anti-angiogenic effect of Propranolol. We observed that a ferroptosis-like mechanism, induced by xCT inhibition with Erastin, at a non-lethal level, promoted features of ECs activation, such as proliferation, migration and vessel-like structures formation, concomitantly with the depletion of reduced glutathione (GSH) and increased levels of oxidative stress and lipid peroxides. Additionally, this ferroptosis-like mechanism promoted vascular endothelial cadherin (VE-cadherin) junctional gaps and potentiated cancer cell adhesion to ECs and transendothelial migration. Propranolol was able to revert Erastin-dependent activation of ECs and increased levels of hydrogen sulfide (H2S) underlie the mechanism of action of Propranolol. Furthermore, we tested a dual-effect therapy by promoting ECs stability with Propranolol and boosting oxidative stress to induce cancer cell death with a nanoformulation comprising selenium-containing chrysin (SeChry) encapsulated in a fourth generation polyurea dendrimer (SeChry@PUREG4). Our data showed that novel developments in cancer treatment may rely on multi-targeting strategies focusing on nanoformulations for a safer induction of cancer cell death, taking advantage of tumor vasculature stabilization.
Collapse
Affiliation(s)
- Filipa Lopes-Coelho
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Lisboa, Portugal.,CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Filipa Martins
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Lisboa, Portugal.,CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Ana Hipólito
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Lisboa, Portugal.,CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Cindy Mendes
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Lisboa, Portugal.,CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Catarina O Sequeira
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Rita F Pires
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - António M Almeida
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Lisboa, Portugal.,Hematology, Hospital da Luz, Lisboa, Portugal
| | - Vasco D B Bonifácio
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Sofia A Pereira
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Jacinta Serpa
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Lisboa, Portugal.,CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisboa, Portugal
| |
Collapse
|
119
|
Du Y, Wang Y, Zhao Q, Zhao L. Selective Synthesis of 5‐Alkylated and 5‐Alkenylated Chromones via Catalytic C‐H Coupling of Chromones with Allyl Alcohols. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100213] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ya‐Zhen Du
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
| | - Yu‐Jiao Wang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
| | - Qing‐Yang Zhao
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
| | - Li‐Ming Zhao
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 China
| |
Collapse
|
120
|
Macedo CM, Saraiva FMDS, Paula JIO, Nascimento SDB, Costa DDSDS, Costa PRR, Dias AG, Paes MC, Nogueira NP. The Potent Trypanocidal Effect of LQB303, a Novel Redox-Active Phenyl-Tert-Butyl-Nitrone Derivate That Causes Mitochondrial Collapse in Trypanosoma cruzi. Front Microbiol 2021; 12:617504. [PMID: 33935988 PMCID: PMC8081855 DOI: 10.3389/fmicb.2021.617504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 03/25/2021] [Indexed: 11/13/2022] Open
Abstract
Chagas disease, which is caused by Trypanosoma cruzi, establishes lifelong infections in humans and other mammals that lead to severe cardiac and gastrointestinal complications despite the competent immune response of the hosts. Furthermore, it is a neglected disease that affects 8 million people worldwide. The scenario is even more frustrating since the main chemotherapy is based on benznidazole, a drug that presents severe side effects and low efficacy in the chronic phase of the disease. Thus, the search for new therapeutic alternatives is urgent. In the present study, we investigated the activity of a novel phenyl-tert-butyl-nitrone (PBN) derivate, LQB303, against T. cruzi. LQB303 presented trypanocidal effect against intracellular [IC50/48 h = 2.6 μM] and extracellular amastigotes [IC50/24 h = 3.3 μM] in vitro, leading to parasite lysis; however, it does not present any toxicity to host cells. Despite emerging evidence that mitochondrial metabolism is essential for amastigotes to grow inside mammalian cells, the mechanism of redox-active molecules that target T. cruzi mitochondrion is still poorly explored. Therefore, we investigated if LQB303 trypanocidal activity was related to the impairment of the mitochondrial function of amastigotes. The investigation showed there was a significant decrease compared to the baseline oxygen consumption rate (OCR) of LQB303-treated extracellular amastigotes of T. cruzi, as well as reduction of “proton leak” (the depletion of proton motive force by the inhibition of F1Fo ATP synthase) and “ETS” (maximal oxygen consumption after uncoupling) oxygen consumption rates. Interestingly, the residual respiration (“ROX”) enhanced about three times in LQB303-treated amastigotes. The spare respiratory capacity ratio (SRC: cell ability to meet new energy demands) and the ATP-linked OCR were also impaired by LQB303 treatment, correlating the trypanocidal activity of LQB303 with the impairment of mitochondrial redox metabolism of amastigotes. Flow cytometric analysis demonstrated a significant reduction of the ΔΨm of treated amastigotes. LQB303 had no significant influence on the OCR of treated mammalian cells, evidencing its specificity against T. cruzi mitochondrial metabolism. Our results suggest a promising trypanocidal activity of LQB303, associated with parasite bioenergetic inefficiency, with no influence on the host energy metabolism, a fact that may point to an attractive alternative therapy for Chagas disease.
Collapse
Affiliation(s)
- Carolina Machado Macedo
- Laboratório de Interação de Tripanossomatídeos e Vetores, Departamento de Bioquímica, IBRAG - Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Francis Monique de Souza Saraiva
- Laboratório de Interação de Tripanossomatídeos e Vetores, Departamento de Bioquímica, IBRAG - Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jéssica Isis Oliveira Paula
- Laboratório de Interação de Tripanossomatídeos e Vetores, Departamento de Bioquímica, IBRAG - Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Suelen de Brito Nascimento
- Laboratório de Interação de Tripanossomatídeos e Vetores, Departamento de Bioquímica, IBRAG - Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.,Laboratório de Hematologia, Departamento de Patologia, Faculdade de Medicina, Universidade Federal Fluminense, Rio de Janeiro, Brazil
| | | | | | - Ayres Guimarães Dias
- Departamento de Química Orgânica, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcia Cristina Paes
- Laboratório de Interação de Tripanossomatídeos e Vetores, Departamento de Bioquímica, IBRAG - Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular (INCT-EM), Rio de Janeiro, Brazil
| | - Natália Pereira Nogueira
- Laboratório de Interação de Tripanossomatídeos e Vetores, Departamento de Bioquímica, IBRAG - Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular (INCT-EM), Rio de Janeiro, Brazil
| |
Collapse
|
121
|
Abdulai IL, Kwofie SK, Gbewonyo WS, Boison D, Puplampu JB, Adinortey MB. Multitargeted Effects of Vitexin and Isovitexin on Diabetes Mellitus and Its Complications. ScientificWorldJournal 2021; 2021:6641128. [PMID: 33935599 PMCID: PMC8055414 DOI: 10.1155/2021/6641128] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 03/19/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Till date, there is no known antidote to cure diabetes mellitus despite the discovery and development of diverse pharmacotherapeutic agents many years ago. Technological advancement in natural product chemistry has led to the isolation of analogs of vitexin and isovitexin found in diverse bioresources. These compounds have been extensively studied to explore their pharmacological relevance in diabetes mellitus. Aim of the Study. The present review was to compile results from in vitro and in vivo studies performed with vitexin and isovitexin derivatives relating to diabetes mellitus and its complications. A systematic online literature query was executed to collect all relevant articles published up to March 2020. RESULTS In this piece, we have collected data and presented it in a one-stop document to support the multitargeted mechanistic actions of vitexin and isovitexin in controlling diabetes mellitus and its complications. CONCLUSION Data collected hint that vitexin and isovitexin work by targeting diverse pathophysiological and metabolic pathways and molecular drug points involved in the clinical manifestations of diabetes mellitus. This is expected to provide a deeper understanding of its actions and also serve as a catapult for clinical trials and application research.
Collapse
Affiliation(s)
- Ibrahim Luru Abdulai
- West African Centre for Cell Biology of Infectious Pathogens, College of Basic and Applied Sciences, University of Ghana, P.O. Box LG 54, Legon, Accra, Ghana
| | - Samuel Kojo Kwofie
- West African Centre for Cell Biology of Infectious Pathogens, College of Basic and Applied Sciences, University of Ghana, P.O. Box LG 54, Legon, Accra, Ghana
- Department of Biomedical Engineering, School of Engineering Sciences, College of Basic and Applied Sciences, University of Ghana, P.O. Box LG77, Legon, Accra, Ghana
| | - Winfred Seth Gbewonyo
- Department of Biochemistry, Cell and Molecular Biology, School of Biological Sciences, University of Ghana, Legon, Accra, Ghana
| | - Daniel Boison
- Department of Biochemistry, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Joshua Buer Puplampu
- Department of Biochemistry, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Michael Buenor Adinortey
- Department of Biochemistry, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| |
Collapse
|
122
|
Luo C, Ampomah-Wireko M, Wang H, Wu C, Wang Q, Zhang H, Cao Y. Isoquinolines: Important Cores in Many Marketed and Clinical Drugs. Anticancer Agents Med Chem 2021; 21:811-824. [PMID: 32329698 DOI: 10.2174/1871520620666200424132248] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/07/2020] [Accepted: 02/19/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Isoquinoline analogs are an important, structurally diverse class of compounds that are extensively used as pharmaceuticals. Derivatives containing the isoquinoline scaffold have become a focus of therapeutic research because of their wide range of biological characteristics. Examples of these drugs, many of which are in clinical application or at the pre-clinical stage, are used to treat a broad swathe of ailments, such as tumors, respiratory diseases, infections, nervous system diseases, cardiovascular and cerebrovascular diseases, endocrine and metabolic diseases. METHODS Data were collected from PubMed, Web of Science, and SciFinder, through searches of drug names. RESULTS At least 38 isoquinoline-based therapeutic drugs are in clinical application or clinical trials, and their chemical structure and pharmacokinetics are described in detail. CONCLUSION The isoquinoline ring is a privileged scaffold which is often preferred as a structural basis for drug design, and plays an important role in drug discovery. This review provides a guide for pharmacologists to find effective preclinical/clinical drugs and examines recent progress in the application of the isoquinoline scaffold.
Collapse
Affiliation(s)
- Chunying Luo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | | | - Huanhuan Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Chunli Wu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Qing Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Hui Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Yaquan Cao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
123
|
Mutungi MM, Muema FW, Kimutai F, Xu YB, Zhang H, Chen GL, Guo MQ. Antioxidant and Antiproliferative Potentials of Ficus glumosa and Its Bioactive Polyphenol Metabolites. Pharmaceuticals (Basel) 2021; 14:ph14030266. [PMID: 33804242 PMCID: PMC8001017 DOI: 10.3390/ph14030266] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 12/14/2022] Open
Abstract
Ficus glumosa Delile (Moraceae), a reputed plant that is used in herbal medicine, is of high medicinal and nutritional value in local communities primarily ascribed to its phytochemical profile. Currently, there are hardly any fine details on the chemical profiling and pharmacological evaluation of this species. In this study, the flavonoids and phenolics contents of the ethanol extracts and four extracted fractions (petroleum ether (PE), ethyl acetate (EA), n-butanol, and water) of the stem bark of Ficus glumosa were firstly quantified. Further, their antioxidant and antiproliferative potentials were also evaluated. The quantitative determination indicated that the EA and n-butanol fractions possessed the highest total flavonoids/phenolics levels of 274.05 ± 0.68 mg RE/g and 78.87 ± 0.97 mg GAE/g, respectively. Similarly, for the 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and ferric-reducing antioxidant power (FRAP) assays, the EA fraction exhibited high potency in both DPPH and ABTS+ scavenging activities with IC50 values of 0.23 ± 0.03 mg/mL, 0.22 ± 0.03 mg/mL, and FRAP potential of 2.81 ± 0.01 mg Fe2+/g, respectively. Furthermore, the EA fraction displayed high cytotoxicity against human lung (A549) and colon (HT-29) cancer cells. Additionally, the liquid chromatography coupled with electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) was employed in order to characterize the chemical constituents of the EA fraction of Ficus glumosa stem bark. Our findings revealed 16 compounds from the EA fraction that were possibly responsible for the strong antioxidant and anti-proliferative properties. This study provides edge-cutting background information on the exploitation of Ficus glumosa as a potential natural antioxidant and anti-cancer remedy.
Collapse
Affiliation(s)
- Moses Mutuse Mutungi
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; (M.M.M.); (F.W.M.); (F.K.); (Y.-B.X.); (H.Z.); (G.-L.C.)
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Felix Wambua Muema
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; (M.M.M.); (F.W.M.); (F.K.); (Y.-B.X.); (H.Z.); (G.-L.C.)
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Festus Kimutai
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; (M.M.M.); (F.W.M.); (F.K.); (Y.-B.X.); (H.Z.); (G.-L.C.)
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong-Bing Xu
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; (M.M.M.); (F.W.M.); (F.K.); (Y.-B.X.); (H.Z.); (G.-L.C.)
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hui Zhang
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; (M.M.M.); (F.W.M.); (F.K.); (Y.-B.X.); (H.Z.); (G.-L.C.)
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gui-Lin Chen
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; (M.M.M.); (F.W.M.); (F.K.); (Y.-B.X.); (H.Z.); (G.-L.C.)
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
- Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Shanghai 201203, China
| | - Ming-Quan Guo
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; (M.M.M.); (F.W.M.); (F.K.); (Y.-B.X.); (H.Z.); (G.-L.C.)
- Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
- Innovation Academy for Drug Discovery and Development, Chinese Academy of Sciences, Shanghai 201203, China
- Correspondence: ; Tel.: +86-027-8770-0850
| |
Collapse
|
124
|
Yang S, Sun L, Song Z, Xu L. Extraction and Application of Natural Rutin From Sophora japonica to Prepare the Novel Fluorescent Sensor for Detection of Copper Ions. Front Bioeng Biotechnol 2021; 9:642138. [PMID: 33692992 PMCID: PMC7937814 DOI: 10.3389/fbioe.2021.642138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/02/2021] [Indexed: 11/13/2022] Open
Abstract
Rutin (R), a representative flavonoid found in various biomasses, can be used to prepare different fluorescent sensors for environmental, biological and medical fields. In this work, the natural R in Sophora japonica was extracted and purified to prepare fluorescent-responding sensor systems intended to recognize copper ions with both strong selectivity as well as appropriate sensitivity. Results showed that neat R had no obvious fluorescent emission peak in PBS buffer solution. However, when R and (2-hydroxypropyl)-β-cyclodextrin (CD) were introduced within buffer solution, fluorescent emission intensity was significantly increased due to the resultant R-CD inclusion complex. In addition, the formed R-CD inclusion complex was shown to behave as the aforementioned fluorescent sensor for copper ions through a mechanism of quenched fluorescent emission intensity when R-CD became bound with copper ions. The binding constant value for R-CD with copper ions was 1.33 × 106, allowing for quantification of copper ions between the concentration range of 1.0 × 10–7–4.2 × 10–6mol⋅L–1. Furthermore, the minimum detection limit was found to be 3.5 × 10–8mol⋅L–1. This work showed the prepared R-CD inclusion complex was both highly selective and strongly sensitive toward copper ions, indicating that this system could be applied into various fields where copper ions are of concern.
Collapse
Affiliation(s)
- Shilong Yang
- Advanced Analysis and Testing Center, Nanjing Forestry University, Nanjing, China
| | - Lu Sun
- College of Science, Nanjing Forestry University, Nanjing, China
| | - Zhiwen Song
- College of Science, Nanjing Forestry University, Nanjing, China
| | - Li Xu
- College of Science, Nanjing Forestry University, Nanjing, China
| |
Collapse
|
125
|
El-Hameed RHA, Fatahala SS, Sayed AI. Synthesis of Some Novel Benzimidazole Derivatives as Anticancer Agent, and Evaluation for CDK2 Inhibition Activity. Med Chem 2021; 18:238-248. [PMID: 33663368 DOI: 10.2174/1573406417666210304100830] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Thiobezimidazoles reveal various pharmacological activities due to similarities with many natural and synthetic molecules, they can easily interact with biomolecules of living systems. OBJECTIVE A series of substituted 2-thiobezimidazoles has been synthesized .Twelve final compounds were screened for in vitro anti-cancer activities against sixty different cell-lines. METHODS The spectral data of the synthesized compounds were characterized. Docking study for active anticancer compounds and CDK2/CyclinA2 Kinase assay against standard reference; Imatinib were performed. RESULTS Two compounds (3c&3l) from the examined series revealed effective antitumor activity in vitro against two-cancer cell lines (Colon Cancer (HCT-116) and Renal Cancer (TK-10). The docking study of synthesized molecules discovered a requisite binding pose in CDK-ATP binding pocket. 3c &3l were promoted in the CDK2/CyclinA2 Kinase assay against standard reference Imatinib. CONCLUSION Against all tested compounds ; two compounds 3c &3l were found active against two types of cell-lines.
Collapse
Affiliation(s)
- Rania Helmy Abd El-Hameed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Helwan University, Ain-Helwan, Helwan, Cairo. Egypt
| | - Samar Said Fatahala
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Helwan University, Ain-Helwan, Helwan, Cairo. Egypt
| | - Amira Ibrahim Sayed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Helwan University, Ain-Helwan, Helwan, Cairo. Egypt
| |
Collapse
|
126
|
Quero J, Mármol I, Cerrada E, Rodríguez-Yoldi MJ. Insight into the potential application of polyphenol-rich dietary intervention in degenerative disease management. Food Funct 2021; 11:2805-2825. [PMID: 32134090 DOI: 10.1039/d0fo00216j] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In recent times, a great number of plants have been studied in order to identify new components with nutraceutical properties, among which are polyphenols. Dietary polyphenols represent a large group of bioactive molecules widely found in the food of plant origin and they have been found able to prevent the onset and progression of degenerative diseases, and to reduce and control their symptoms. These health protective effects have been mainly related to their antioxidant and anti-inflammatory properties. However, it must be considered that the application of isolated polyphenols as nutraceuticals is quite limited due to their poor systemic distribution and relative bioavailability. The present review highlights the potential effect of dietary intervention with polyphenol-rich food and plant extracts in patients with cancer, diabetes and neurodegenerative, autoimmune, cardiovascular and ophthalmic diseases, as well as the possible molecular mechanisms of action suggested in numerous studies with animal models.
Collapse
Affiliation(s)
- Javier Quero
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn (Carlos III), IIS Aragón, IA2, Spain.
| | - Inés Mármol
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn (Carlos III), IIS Aragón, IA2, Spain.
| | - Elena Cerrada
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain.
| | - María Jesús Rodríguez-Yoldi
- Departamento de Farmacología y Fisiología. Unidad de Fisiología, Facultad de Veterinaria, Universidad de Zaragoza, 50013, Zaragoza, CIBERobn (Carlos III), IIS Aragón, IA2, Spain.
| |
Collapse
|
127
|
Afifi HS, Al Marzooqi HM, Tabbaa MJ, Arran AA. Phytochemicals of Conocarpus spp. as a Natural and Safe Source of Phenolic Compounds and Antioxidants. Molecules 2021; 26:molecules26041069. [PMID: 33670565 PMCID: PMC7922956 DOI: 10.3390/molecules26041069] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 11/16/2022] Open
Abstract
Optimization of the extraction conditions of polyphenolic compounds for different parts of the Damas species, Conocarpus lancifolius and Conocarpus erectus, grown under UAE conditions was studied. The combination of ethanol concentration (50, 75, and 100%), temperature (45, 55, and 65 °C) and time (1, 2, and 3 h) was used by applying the Response Surface Methodology. The data showed that the extracts (n = 90) contained phenolic compounds, flavonoids, and tannins, and were free of alkaloids. Changing the extraction conditions had a significant effect on the detection of phytosterols, saponins, and glycosides and on the solubility of vanillic acid, p-coumaric acid, sinapic acid, t-ferulic acid, rutin hydrate, protocatechuic acid, quercetin, and flavone. The data reveal that the roots and leaves of C. erectus and the leaves and fruits of C.lancifolius are the most important plant parts from which to extract these compounds. This study draws attention to the unordinary use of Conocarpus spp. as a source of natural food additive.
Collapse
Affiliation(s)
- Hanan S. Afifi
- Food Research Section, R&D Division, Abu Dhabi Agriculture and Food Safety Authority, Abu Dhabi P.O. Box 52150, United Arab Emirates;
- Correspondence: or ; Tel.: +971-2818-1759
| | - Hassan M. Al Marzooqi
- Food Research Section, R&D Division, Abu Dhabi Agriculture and Food Safety Authority, Abu Dhabi P.O. Box 52150, United Arab Emirates;
| | - Mohammad J. Tabbaa
- Agriculture Research Section, R&D Division, Abu Dhabi Agriculture and Food Safety Authority, Abu Dhabi P.O. Box 52150, United Arab Emirates; (M.J.T.); (A.A.A.)
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Ahmed A. Arran
- Agriculture Research Section, R&D Division, Abu Dhabi Agriculture and Food Safety Authority, Abu Dhabi P.O. Box 52150, United Arab Emirates; (M.J.T.); (A.A.A.)
| |
Collapse
|
128
|
Sharma P, Singh M, Mathew B. An Update of Synthetic Approaches and Structure‐Activity Relationships of Various Classes of Human MAO‐B Inhibitors. ChemistrySelect 2021. [DOI: 10.1002/slct.202004188] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Pratibha Sharma
- Chitkara College of Pharmacy Chitkara University Punjab India
| | - Manjinder Singh
- Chitkara College of Pharmacy Chitkara University Punjab India
| | - Bijo Mathew
- Department of Pharmaceutical Chemistry Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Sciences Campus Kochi 682 041 India
| |
Collapse
|
129
|
Serra V, Salvatori G, Pastorelli G. Dietary Polyphenol Supplementation in Food Producing Animals: Effects on the Quality of Derived Products. Animals (Basel) 2021; 11:ani11020401. [PMID: 33562524 PMCID: PMC7914517 DOI: 10.3390/ani11020401] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/30/2021] [Accepted: 02/02/2021] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Polyphenols are secondary plant metabolites mainly known for their antioxidant properties. Their use as feed additives in the nutrition of farm animals is becoming increasingly popular as they are particularly exposed to oxidative stress which is reflected in a lipoperoxidation of the final product. For this reason, it is essential to preserve the quality and the safety of meat and milk products by attenuating oxidative deterioration. Moreover, polyphenols present the advantage of being more acceptable to the consumers than synthetic counterparts, as they are considered to be “non-toxic”. The present review presents an overview of several studies focused on the dietary supplementation of polyphenols to monogastric and ruminants, as well as their direct addition to meat and dairy products, with particular emphasis on their antioxidant effects on the final product. Abstract The growing interest in producing healthier animal products with a higher ratio of polyunsaturated to saturated fatty acids, is associated with an increase in lipoperoxidation. For this reason, it is essential to attenuate oxidative deterioration in the derived products. Natural antioxidants such as polyphenols represent a good candidate in this respect. The first part of the review highlights the occurrence, bioavailability, and the role of polyphenols in food-producing animals that, especially in intensive systems, are exposed to stressful situations in which oxidation plays a crucial role. The second part offers an overview of the effects of polyphenols either supplemented to the diet of monogastric and ruminants or added directly to meat and dairy products on the physicochemical and sensorial properties of the product. From this review emerges that polyphenols play an important, though not always clear, role in the quality of meat and meat products, milk and dairy products. It cannot be ruled out that different compounds or amounts of polyphenols may lead to different results. However, the inclusion of agro-industrial by-products rich in polyphenols, in animal feed, represents an innovative and alternative source of antioxidants as well as being useful in reducing environmental and economic impact.
Collapse
Affiliation(s)
- Valentina Serra
- Department of Veterinary Medicine, University of Milano, Via dell’Università 6, 26900 Lodi, Italy
- Correspondence: (V.S.); (G.P.); Tel.: +39-0250-334-576 (V.S. & G.P.)
| | - Giancarlo Salvatori
- Department of Medicine and Sciences for Health “V. Tiberio”, University of Molise, Via Francesco De Sanctis 1, 86100 Campobasso, Italy;
| | - Grazia Pastorelli
- Department of Veterinary Medicine, University of Milano, Via dell’Università 6, 26900 Lodi, Italy
- Correspondence: (V.S.); (G.P.); Tel.: +39-0250-334-576 (V.S. & G.P.)
| |
Collapse
|
130
|
High-Throughput Screening and Characterization of Phenolic Compounds in Stone Fruits Waste by LC-ESI-QTOF-MS/MS and Their Potential Antioxidant Activities. Antioxidants (Basel) 2021; 10:antiox10020234. [PMID: 33557299 PMCID: PMC7914583 DOI: 10.3390/antiox10020234] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 12/20/2022] Open
Abstract
Stone fruits, including peach (Prunus persica L.), nectarine (Prunus nucipersica L.), plum (Prunus domestica L.) and apricot (Prunus armeniaca L.) are common commercial fruits in the market. However, a huge amount of stone fruits waste is produced throughout the food supply chain during picking, handling, processing, packaging, storage, transportation, retailing and final consumption. These stone fruits waste contain high phenolic content which are the main contributors to the antioxidant potential and associated health benefits. The antioxidant results showed that plum waste contained higher concentrations of total phenolic content (TPC) (0.94 ± 0.07 mg gallic acid equivalents (GAE)/g) and total flavonoid content (TFC) (0.34 ± 0.01 mg quercetin equivalents (QE)/g), while apricot waste contained a higher concentration of total tannin content (TTC) (0.19 ± 0.03 mg catechin equivalents (CE)/g) and DPPH activity (1.47 ± 0.12 mg ascorbic acid equivalents (AAE)/g). However, nectarine waste had higher antioxidant capacity in ferric reducing-antioxidant power (FRAP) (0.98 ± 0.02 mg AAE/g) and total antioxidant capacity (TAC) (0.91 ± 0.09 mg AAE/g) assays, while peach waste showed higher antioxidant capacity in 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assay (0.43 ± 0.09 mg AAE/g) as compared to other stone fruits waste. Qualitative and quantitative phenolic analysis of Australian grown stone fruits waste were conducted by liquid chromatography coupled with electrospray-ionization quadrupole time-of-flight mass spectrometry (LC-ESI-QTOF-MS/MS) and HPLC-photodiode array detection (PDA). The LC-ESI-QTOF-MS/MS result indicates that 59 phenolic compounds were tentatively characterized in peach (33 compounds), nectarine (28), plum (38) and apricot (23). The HPLC-PDA indicated that p-hydroxybenzoic acid (18.64 ± 1.30 mg/g) was detected to be the most dominant phenolic acid and quercetin (19.68 ± 1.38 mg/g) was the most significant flavonoid in stone fruits waste. Hence, it could be concluded that stone fruit waste contains various phenolic compounds and have antioxidant potential. The results could support the applications of these stone fruit wastes in other food, feed, nutraceutical and pharmaceutical industries.
Collapse
|
131
|
Maan G, Sikdar B, Kumar A, Shukla R, Mishra A. Role of Flavonoids in Neurodegenerative Diseases: Limitations and Future Perspectives. Curr Top Med Chem 2021; 20:1169-1194. [PMID: 32297582 DOI: 10.2174/1568026620666200416085330] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/13/2020] [Accepted: 03/13/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Flavonoids, a group of natural dietary polyphenols, are known for their beneficial effects on human health. By virtue of their various pharmacological effects, like anti-oxidative, antiinflammatory, anti-carcinogenic and neuroprotective effects, flavonoids have now become an important component of herbal supplements, pharmaceuticals, medicinals and cosmetics. There has been enormous literature supporting neuroprotective effect of flavonoids. Recently their efficacy in various neurodegenerative diseases, like Alzheimer's disease and Parkinson diseases, has received particular attention. OBJECTIVE The mechanism of flavanoids neuroprotection might include antioxidant, antiapoptotic, antineuroinflammatory and modulation of various cellular and intracellular targets. In in-vivo systems, before reaching to brain, they have to cross barriers like extensive first pass metabolism, intestinal barrier and ultimately blood brain barrier. Different flavonoids have varied pharmacokinetic characteristics, which affect their pharmacodynamic profile. Therefore, brain accessibility of flavonoids is still debatable. METHODS This review emphasized on current trends of research and development on flavonoids, especially in neurodegenerative diseases, possible challenges and strategies to encounter using novel drug delivery system. RESULTS Various flavonoids have elicited their therapeutic potential against neurodegenerative diseases, however by using nanotechnology and novel drug delivery systems, the bioavailability of favonoids could be enhanced. CONCLUSION This study bridges a significant opinion on medicinal chemistry, ethanopharmacology and new drug delivery research regarding use of flavonoids in management of neurodegeneration.
Collapse
Affiliation(s)
- Gagandeep Maan
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Raebareli (NIPER-R), Bijnor-Sisendi Road, Sarojini Nagar, Near CRPF Base Camp, Lucknow-226002, U.P., India
| | - Biplab Sikdar
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research-Raebareli (NIPER-R), Bijnor-Sisendi Road, Sarojini Nagar, Near CRPF Base Camp, Lucknow-226002, U.P., India
| | - Ashish Kumar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli (NIPER-R), Bijnor-Sisendi Road, Sarojini Nagar, Near CRPF Base Camp, Lucknow-226002, U.P., India
| | - Rahul Shukla
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli (NIPER-R), Bijnor-Sisendi Road, Sarojini Nagar, Near CRPF Base Camp, Lucknow-226002, U.P., India
| | - Awanish Mishra
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Raebareli (NIPER-R), Bijnor-Sisendi Road, Sarojini Nagar, Near CRPF Base Camp, Lucknow-226002, U.P., India
| |
Collapse
|
132
|
Alshammari MD, Kucheryavy PV, Ashpole NM, Colby DA. Synthesis, biological evaluation, and NMR studies of 3-fluorinated derivatives of 3',4',5'-trihydroxyflavone and 3',4',5'-trimethoxyflavone. Bioorg Med Chem Lett 2021; 32:127720. [PMID: 33259925 DOI: 10.1016/j.bmcl.2020.127720] [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: 09/15/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 10/22/2022]
Abstract
Flavones are valuable scaffolds in medicinal chemistry, especially as they display activity as antioxidants and neuroprotective agents. The need to incorporate a fluorine atom on flavones has driven much of the recent synthetic work in this area. We now report a route for the production of 3-fluorinated derivatives of 3',4',5'-trihydroxyflavone and 3',4',5'-trimethoxyflavone. Biological evaluation of these agents, along with their non-fluorinated counterparts, demonstrate that antioxidant activity may be enhanced whereas neuroprotective activity is conserved. Also, the 3-fluoro-3',4',5'-trihydroxyflavone can act as an NMR probe to detect structural changes during its action as a radical scavenger.
Collapse
Affiliation(s)
- Maali D Alshammari
- Department of BioMolecular Sciences, University of Mississippi, University, MS 38677, United States
| | - Pavel V Kucheryavy
- Department of BioMolecular Sciences, University of Mississippi, University, MS 38677, United States
| | - Nicole M Ashpole
- Department of BioMolecular Sciences, University of Mississippi, University, MS 38677, United States
| | - David A Colby
- Department of BioMolecular Sciences, University of Mississippi, University, MS 38677, United States.
| |
Collapse
|
133
|
Das S, Mukherjee S, Chakrabarty S, Chattopadhyay N. Hydroxyl Group-Directed Solvation of Excited-State Intramolecular Proton Transfer Probes in Water: A Demonstration from the Fluorescence Anisotropy of Hydroxyflavones. J Phys Chem A 2021; 125:57-64. [PMID: 33166155 DOI: 10.1021/acs.jpca.0c08023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Formation of a probe-solvent network resulting in unusually high fluorescence anisotropy (FA) of an excited-state intramolecular proton transfer (ESIPT) probe, 3-hydroxyflavone (3HF), in water prompted us to explore the solvation patterns on its 7-hydroxy (7HF) and 6-hydroxy (6HF) positional analogues. In the present study, it was observed that 7HF exhibits a lower FA than 3HF does in water, implying that the volume of the 7HF-water cluster is less than that of the 3HF-water cluster. Experimental and computational results led us to propose that 7HF forms its water cluster at the molecular periphery in contrast to the projected-out structure in case of the 3HF-water cluster. Density functional theory (DFT)-based quantum chemical calculations provide an approach for the differential solvation patterns of 3HF and 7HF. 6HF, a non-ESIPT probe, exhibits very low FA in water compared with both 3HF and 7HF. This study demonstrates that proper positioning of the hydroxyl group and its participation in the extended π-conjugation within the molecule dictate the formation of the solvated cluster endorsing directed solvation.
Collapse
Affiliation(s)
- Sinjan Das
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Shounak Mukherjee
- Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700 106, India
| | - Suman Chakrabarty
- Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700 106, India
| | | |
Collapse
|
134
|
Lin S, Wade JD, Liu S. De Novo Design of Flavonoid-Based Mimetics of Cationic Antimicrobial Peptides: Discovery, Development, and Applications. Acc Chem Res 2021; 54:104-119. [PMID: 33346639 DOI: 10.1021/acs.accounts.0c00550] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The alarming rate at which pathogens are developing resistance to conventional antibiotics represents one of the major global challenges to public health care. The prevalence of multidrug-resistant microorganisms is a major impetus for the discovery and development of new antimicrobials. Nature has, to date, been the source of most of the antibiotics discovered and used, including cationic antimicrobial peptides (CAMPs). CAMPs are key components of the innate immune system that are widely found in humans, animals, plants, and microorganisms and that serve as a first line of defense for the host. The attractive features of CAMPs have led to their recognition as potential new antimicrobials. However, they possess several inherent flaws that limit their clinical application including low stability, poor oral bioavailability, poor in vivo efficacy, and a high production cost. To address these issues, small molecule-based peptidomimetic antimicrobials have been designed to biomimic the structural features and biological function of CAMPs. Plant-derived flavonoids (e.g., xanthones and flavones) are active components in traditional herbal medicines and have been reported to contain a variety of significant pharmacological actions including antibacterial, antiviral, antioxidant, and anticancer activities. Over the past decade, we have developed a new chemical strategy to design, discover, and develop xanthone- or flavone-based peptidomimetics and have designed, synthesized, and biologically evaluated a library of approximately 450 new xanthone or flavone derivatives. The designed, structurally diverse compounds can be generally classified into two subfamilies, namely, peptidic and nonpeptidic amphiphilic xanthone or flavone derivatives. In this Account, we describe our efforts on the design, synthesis, biological property evaluation, and mechanism of action model studies of synthetic mimics of CAMPs. The flavonoid compounds are an important component of these rationally designed mimics because they function as hydrophobic aromatic moieties conjugated with different length lipid moieties, behave like an unnatural hydrophobic residue, and provide a rigid scaffold, with the reduced conformational flexibility more likely to provide an active conformation. The mimics can effectively disrupt the integrity of the bacterial membranes. Our endeavors encompass design principles, chemical synthesis, in vitro screening, structural optimization, extensive structural-activity relationship analysis, and a mechanism of action study through biophysical technologies including NMR spectroscopy techniques and computer dynamics simulations, drug resistance assays, in vivo pharmaceutical kinetics (PK) analyses, and in vivo efficacy evaluations of selected promising compounds against drug-resistant bacteria and fungi. Our major contributions to the discovery and development of flavonoid-based mimics as antimicrobials include effectively addressing several limitations associated with CAMPs and have led to promising compounds with a notable potential for further development as new therapeutic antimicrobial agents for the treatment of drug-resistant bacteria- or fungi-induced infections.
Collapse
Affiliation(s)
- Shuimu Lin
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - John D. Wade
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria 3010, Australia
- School of Chemistry, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Shouping Liu
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| |
Collapse
|
135
|
Chang MY, Tsai MC, Lin CY. A novel one-pot synthesis of flavones. RSC Adv 2021; 11:11655-11662. [PMID: 35423639 PMCID: PMC8695955 DOI: 10.1039/d1ra00534k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/17/2021] [Indexed: 11/28/2022] Open
Abstract
In this paper, a one-pot facile route for the BiCl3/RuCl3-mediated synthesis of functionalized flavones is described, including: (i) intermolecular ortho-acylation of substituted phenols with cinnamoyl chlorides, and (ii) intramolecular cyclodehydrogenation of the resulting o-hydroxychalcones. The reaction conditions are discussed herein. A one-pot facile route for the BiCl3/RuCl3-mediated synthesis of functionalized flavones is described, including: (i) ortho-acylation of phenols with cinnamoyl chlorides, and (ii) cyclodehydrogenation of the resulting o-hydroxychalcones.![]()
Collapse
Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University Hospital
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Min-Chen Tsai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University Hospital
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Chun-Yi Lin
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University Hospital
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| |
Collapse
|
136
|
Chen Y, Yao L, Pan W, Guo B, Lin S, Wei Y. An integrated analysis of metabolomic and transcriptomic profiles reveals flavonoid metabolic differences between Anoectochilus roxburghii and Anoectochilus formosanus. Process Biochem 2021. [DOI: 10.1016/j.procbio.2020.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
137
|
Ahmed MN, Ghias M, Shah SWA, Shoaib M, Tahir MN, Ashfaq M, Ibrahim MAA, Andleeb H, Gil DM, Frontera A. X-ray characterization, Hirshfeld surface analysis, DFT calculations, in vitro and in silico lipoxygenase inhibition (LOX) studies of dichlorophenyl substituted 3-hydroxy-chromenones. NEW J CHEM 2021. [DOI: 10.1039/d1nj04340d] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports the synthesis, X-ray characterization and theoretical study of dichlorophenyl substituted 3-hydroxy-chromenones focusing on the low prevalence of halogen bonds and in vitro and in silico lipoxygenase inhibition (LOX) studies.
Collapse
Affiliation(s)
- Muhammad Naeem Ahmed
- Department of Chemistry, The University of Azad Jammu and Kashmir Muzaffarabad, 13100, Pakistan
| | - Mehreen Ghias
- Department of Pharmacy, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan
| | - Syed Wadood Ali Shah
- Department of Pharmacy, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan
| | - Mohammad Shoaib
- Department of Pharmacy, University of Malakand, Chakdara, Dir Lower, KPK, Pakistan
| | | | - Muhammad Ashfaq
- Department of Physics University of Sargodha, Sargodha, Pakistan
| | - Mahmoud A. A. Ibrahim
- Computational Chemistry Laboratory, Department of Chemistry, Faculty of Science, Minia University, Minia 61519, Egypt
| | - Hina Andleeb
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Diego M. Gil
- INBIOFAL (CONICET – UNT), Instituto de Química Orgánica. Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, T4000INI, San Miguel de Tucumán, Argentina
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain
| |
Collapse
|
138
|
Marć MA, Kincses A, Rácz B, Nasim MJ, Sarfraz M, Lázaro-Milla C, Domínguez-Álvarez E, Jacob C, Spengler G, Almendros P. Antimicrobial, Anticancer and Multidrug-Resistant Reversing Activity of Novel Oxygen-, Sulfur- and Selenoflavones and Bioisosteric Analogues. Pharmaceuticals (Basel) 2020; 13:ph13120453. [PMID: 33322409 PMCID: PMC7763008 DOI: 10.3390/ph13120453] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 01/16/2023] Open
Abstract
Multidrug resistance of cancer cells to cytotoxic drugs still remains a major obstacle to the success of chemotherapy in cancer treatment. The development of new drug candidates which may serve as P-glycoprotein (P-gp) efflux pump inhibitors is a promising strategy. Selenium analogues of natural products, such as flavonoids, offer an interesting motif from the perspective of drug design. Herein, we report the biological evaluation of novel hybrid compounds, bearing both the flavone core (compounds 1–3) or a bioisosteric analogue core (compounds 4–6) and the triflyl functional group against Gram-positive and Gram-negative bacteria, yeasts, nematodes, and human colonic adenocarcinoma cells. Results show that these flavones and analogues of flavones inhibited the activity of multidrug resistance (MDR) efflux pump ABCB1 (P-glycoprotein, P-gp). Moreover, the results of the rhodamine 123 accumulation assay demonstrated a dose-dependent inhibition of the abovementioned efflux pump. Three compounds (4, 5, and 6) exhibited potent inhibitory activity, much stronger than the positive control, verapamil. Thus, these chalcogen bioisosteric analogues of flavones become an interesting class of compounds which could be considered as P-gp efflux pump inhibitors in the therapy of MDR cancer. Moreover, all the compounds served as promising adjuvants in the cancer treatment, since they exhibited the P-gp efflux pump modulating activity.
Collapse
Affiliation(s)
- Małgorzata Anna Marć
- Department of Medical Microbiology and Immunobiology, University of Szeged, H-6720 Szeged, Hungary; (A.K.); (B.R.); (G.S.)
- Correspondence: ; Tel.: +36-62-545-115
| | - Annamária Kincses
- Department of Medical Microbiology and Immunobiology, University of Szeged, H-6720 Szeged, Hungary; (A.K.); (B.R.); (G.S.)
| | - Bálint Rácz
- Department of Medical Microbiology and Immunobiology, University of Szeged, H-6720 Szeged, Hungary; (A.K.); (B.R.); (G.S.)
| | - Muhammad Jawad Nasim
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbruecken, Germany; (M.J.N.); (M.S.); (C.J.)
| | - Muhammad Sarfraz
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbruecken, Germany; (M.J.N.); (M.S.); (C.J.)
| | - Carlos Lázaro-Milla
- Grupo de Lactamas y Heterociclos Bioactivos, Unidad Asociada al CSIC, Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain;
| | - Enrique Domínguez-Álvarez
- Instituto de Química Orgánica General IQOG-CSIC, Consejo Superior de Investigaciones Científicas, Juan de la Cierva 3, 28006 Madrid, Spain; (E.D.-Á.); (P.A.)
| | - Claus Jacob
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbruecken, Germany; (M.J.N.); (M.S.); (C.J.)
| | - Gabriella Spengler
- Department of Medical Microbiology and Immunobiology, University of Szeged, H-6720 Szeged, Hungary; (A.K.); (B.R.); (G.S.)
| | - Pedro Almendros
- Instituto de Química Orgánica General IQOG-CSIC, Consejo Superior de Investigaciones Científicas, Juan de la Cierva 3, 28006 Madrid, Spain; (E.D.-Á.); (P.A.)
| |
Collapse
|
139
|
Association between flavonoid intake and risk of hypertension in two cohorts of Australian women: a longitudinal study. Eur J Nutr 2020; 60:2507-2519. [PMID: 33161442 DOI: 10.1007/s00394-020-02424-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 10/19/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Epidemiological evidence suggests higher dietary flavonoid intake is associated with lower risk of several chronic diseases. This study aimed to investigate the association between intake of flavonoids and their subclasses, and incidence of hypertension among Australian women in two age cohorts. METHODS This population-based study included 6599 middle-aged (52.5 ± 1.5 years) and 6099 reproductive-aged (27.5 ± 1.5 years) women from the Australian Longitudinal Study on Women's Health. Food frequency questionnaires were used to quantify intake of flavonoids by cross-referencing with the Phenol-Explorer food composition database. Generalised Estimating Equation analyses investigated associations with incident hypertension, adjusting for demographic and dietary variables and hypertension risk factors. RESULTS There were 1645 cases (24.9%) of hypertension during 15 years follow-up in the middle-aged cohort and 336 cases (5.5%) during 12 years follow-up in the reproductive-aged cohort. Higher intakes of flavones [adjusted relative risk (ARR) for quintile 5 vs. 1: 0.82, 95% CI 0.70-0.97], isoflavones (0.86, 0.75-0.99) and flavanones (0.83, 0.69-1.00) were associated with a lower risk of hypertension in the middle-aged cohort. In the reproductive-aged cohort, higher intakes of flavanols (0.70, 0.49-0.99) were associated with a lower risk of hypertension. Key foods that provided these flavonoids were oranges, orange juice, apples, red wine and soy milk. CONCLUSION Higher intakes of total flavonoids and subclasses were associated with a lower risk of hypertension in Australian women. These findings can be used in nutrition messaging and policies for improved cardiovascular health of women.
Collapse
|
140
|
Zhang M, Zhu X. Computational investigation of flavonol-based GLP-1R agonists using DFT calculations and molecular docking. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.113005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
141
|
de Araújo Moreira MDR, Sales-Campos H, Fontanari C, Galvão Meireles AF, Borges Prado MK, Zoccal KF, Sorgi CA, Tefé da Silva C, Groppo M, Faccioli LH. The ethanolic extract of Terminalia argentea Mart. & Zucc. bark reduces the inflammation through the modulation of cytokines and nitric oxide mediated by the downregulation of NF-κB. JOURNAL OF ETHNOPHARMACOLOGY 2020; 261:113150. [PMID: 32730887 DOI: 10.1016/j.jep.2020.113150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/18/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Terminalia argentea Mart. & Zucc. (Combretaceae), popularly known as "capitão do campo", is native from the Brazilian cerrado, which is used in folk medicine to treat inflammatory diseases. AIM OF THE STUDY We aimed to investigate the anti-inflammatory effects, toxicity and mechanisms of action regarding the use of the hydroalcoholic extract of T. argentea bark. MATERIALS AND METHODS Toxicity was determinate in vitro using the macrophage lineage J774.1 without LPS. Cells were treated with 0.5; 2; 8; 32 and 125 μg/mL of the plant extract. Cell viability was assessed by MTT colorimetric assay. The production of nitrite and cytokines was also determined in the supernatants. A NF-κB reporter assay using RAW macrophages was employed to elucidate the impact of the plant extract on the expression of such molecule. In mice, toxicity was assessed by orally given an intermediate to high concentration of the plant extract on a single dose (1000 or 5000 mg/kg) or low and intermediate doses (300 or 1000 mg/kg) twice daily for 14 days. Blood samples were collected for biochemical analysis. The anti-inflammatory activity was assessed using the air-pouch model with or without pre-inoculation with the inflammatory stimuli LPS (0.5 μg/mL), followed by treatment with plant extract at 5, 60 or 300 mg/kg administered in the air pouch (subcutaneous injection). After 4 h, mice were euthanized and the air pouches washed with 2 mL heparinized PBS (10 IU/mL). Then, the local production in the air pouch wash of cytokines, total proteins and leukocytes was assessed. RESULTS No signals of toxicity were observed either in cells or mice. Regardless the concentration used in vitro, the extract exhibited a significant anti-inflammatory activity, as perceived by the reduction of the inflammatory cytokines IL-1β, TNF-α and IL-6 and nitrites on cell supernatants. This was concomitant with a downregulation in NF-κB and elevated levels of IL-10. In mice, similar effects were observed, especially when the plant extract was given at 300 mg/kg, inhibiting the release of IL-1β, TNF-α, IL-6 and proteins, as well as increasing the release of IL-10. CONCLUSIONS Altogether, our results demonstrated that the hydroalcoholic extract of T. argentea bark has anti-inflammatory activity without inducing toxicity in cells or living animals. This activity seems to be chiefly influenced by a downregulation in NF-κB, inflammatory cytokines and production of nitrite along with augmented concentration of IL-10.
Collapse
Affiliation(s)
| | - Helioswilton Sales-Campos
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil; Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
| | - Caroline Fontanari
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Alyne Fávero Galvão Meireles
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Morgana Kelly Borges Prado
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Karina Furlani Zoccal
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil; Centro Universitário Barão de Mauá, Ribeirão Preto, São Paulo, Brazil.
| | - Carlos Artério Sorgi
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | | | - Milton Groppo
- Departamento de Biologia, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Ribeirão Preto, São Paulo, Brazil.
| | - Lúcia Helena Faccioli
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| |
Collapse
|
142
|
Radonjić S, Maraš V, Raičević J, Košmerl T. Wine or Beer? Comparison, Changes and Improvement of Polyphenolic Compounds during Technological Phases. Molecules 2020; 25:E4960. [PMID: 33120907 PMCID: PMC7663142 DOI: 10.3390/molecules25214960] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022] Open
Abstract
Wine and beer are nowadays the most popular alcoholic beverages, and the benefits of their moderate consumption have been extensively supported by the scientific community. The main source of wine and beer's antioxidant behavior are the phenolic substances. Phenolic compounds in wine and beer also influence final product quality, in terms of color, flavor, fragrance, stability, and clarity. Change in the quantity and quality of phenolic compounds in wine and beer depends on many parameters, beginning with the used raw material, its place of origin, environmental growing conditions, and on all the applied technological processes and the storage of the final product. This review represents current knowledge of phenolic compounds, comparing qualitative and quantitative profiles in wine and beer, changes of these compounds through all phases of wine and beer production are discussed, as well as the possibilities for increasing their content. Analytical methods and their importance for phenolic compound determination have also been pointed out. The observed data showed wine as the beverage with a more potent biological activity, due to a higher content of phenolic compounds. However, both of them contain, partly similar and different, phenolic compounds, and recommendations have to consider the drinking pattern, consumed quantity, and individual preferences. Furthermore, novel technologies have been developing rapidly in order to improve the polyphenolic content and antioxidant activity of these two beverages, particularly in the brewing industry.
Collapse
Affiliation(s)
- Sanja Radonjić
- “13. Jul Plantaže” a.d., Research and Development Sector, Put Radomira Ivanovića 2, 81000 Podgorica, Montenegro; (V.M.); (J.R.)
| | - Vesna Maraš
- “13. Jul Plantaže” a.d., Research and Development Sector, Put Radomira Ivanovića 2, 81000 Podgorica, Montenegro; (V.M.); (J.R.)
| | - Jovana Raičević
- “13. Jul Plantaže” a.d., Research and Development Sector, Put Radomira Ivanovića 2, 81000 Podgorica, Montenegro; (V.M.); (J.R.)
| | - Tatjana Košmerl
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia;
| |
Collapse
|
143
|
Liu H, Wang Y, Lv M, Luo Y, Liu BM, Huang Y, Wang M, Wang J. Flavonoid analogues as urease inhibitors: Synthesis, biological evaluation, molecular docking studies and in-silico ADME evaluation. Bioorg Chem 2020; 105:104370. [PMID: 33096309 DOI: 10.1016/j.bioorg.2020.104370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/22/2020] [Accepted: 10/08/2020] [Indexed: 11/18/2022]
Abstract
A series of novel flavonoid analogues were designed and synthesized. The aimed compounds for urease inhibitory activities were clearly superior to the control drug thiourea (more than 10 times). Among these compounds, L2 (IC50 = 1.343 µM) and L12 (IC50 = 1.207 µM) exhibited the most excellent urease inhibitory activity in vitro. The molecular dockings of L2, L12 and L22 into urease were performed to explore the binding modes and their structure-activity relationship. Furthermore, these aimed compounds showed good druggable properties.
Collapse
Affiliation(s)
- Honghui Liu
- Medical College, Guangxi University, Nanning 530004, China; School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yan Wang
- College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Mingxia Lv
- Medical College, Guangxi University, Nanning 530004, China
| | - Yi Luo
- Guangxi Institute for Food and Drug Control, Nanning 530021, China
| | - Bu-Ming Liu
- Guangxi Key Laboratory of Traditional Chinese Medicine, Quality Standards, Nanning 530022, China
| | - Yan Huang
- Guangxi Key Laboratory of Traditional Chinese Medicine, Quality Standards, Nanning 530022, China
| | - Mian Wang
- College of Life Science and Technology, Guangxi University, Nanning 530004, China.
| | - Jianyi Wang
- Medical College, Guangxi University, Nanning 530004, China; School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
| |
Collapse
|
144
|
Antiangiogenic Activity of Flavonoids: A Systematic Review and Meta-Analysis. Molecules 2020; 25:molecules25204712. [PMID: 33066630 PMCID: PMC7594036 DOI: 10.3390/molecules25204712] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/08/2020] [Accepted: 10/10/2020] [Indexed: 12/16/2022] Open
Abstract
Abstract: An imbalance of angiogenesis contributes to many pathologies such as cancer, arthritis and retinopathy, hence molecules that can modulate angiogenesis are of considerable therapeutic importance. Despite many reports on the promising antiangiogenic properties of naturally occurring flavonoids, no flavonoids have progressed to the clinic for this application. This systematic review and meta-analysis therefore evaluates the antiangiogenic activities of a wide range of flavonoids and is presented in two sections. The first part of the study (Systematic overview) included 402 articles identified by searching articles published before May 2020 using ScienceDirect, PubMed and Web of Science databases. From this initial search, different classes of flavonoids with antiangiogenic activities, related pathologies and use of in vitro and/or in/ex vivo angiogenesis assays were identified. In the second part (Meta-analysis), 25 studies concerning the antiangiogenic evaluation of flavonoids using the in vivo chick chorioallantoic membrane (CAM) assay were included, following a targeted search on articles published prior to June 2020. Meta-analysis of 15 out of the 25 eligible studies showed concentration dependent antiangiogenic activity of six compared subclasses of flavonoids with isoflavones, flavonols and flavones being the most active (64 to 80% reduction of blood vessels at 100 µM). Furthermore, the key structural features required for the antiangiogenic activity of flavonoids were derived from the pooled data in a structure activity relationship (SAR) study. All in all, flavonoids are promising candidates for the development of antiangiogenic agents, however further investigations are needed to determine the key structural features responsible for their activity.
Collapse
|
145
|
Yin SJ, Zhao J, Yang FQ. Recent applications of magnetic solid phase extraction in sample preparation for phytochemical analysis. J Pharm Biomed Anal 2020; 192:113675. [PMID: 33099113 DOI: 10.1016/j.jpba.2020.113675] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/01/2020] [Accepted: 10/03/2020] [Indexed: 12/22/2022]
Abstract
Sample preparation such as isolation and pre-concentration is a crucial step for the phytochemical analysis. Magnetic solid-phase extraction (MSPE) has received considerable attention, mainly due to its phase separation more conveniently by facile magnetic decantation as compared to traditional SPE. This review focused on the recent applications of MSPE in sample preparation for the analysis of phytochemical compounds in plants, biological samples and Chinese herbal preparations. In addition, the enzymes immobilized on the magnetic materials and used for the biospecific extraction of enzyme inhibitors were also discussed. The information summarized in this article may provide a reference to the further applications of MSPE in phytochemical analysis.
Collapse
Affiliation(s)
- Shi-Jun Yin
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Jing Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, PR China.
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China.
| |
Collapse
|
146
|
Shcherbakov KV, Artemyeva MA, Burgart YV, Saloutin VI, Volobueva AS, Misiurina MA, Esaulkova YL, Sinegubova EO, Zarubaev VV. 7-Imidazolyl-substituted 4'-methoxy and 3',4'-dimethoxy-containing polyfluoroflavones as promising antiviral agents. J Fluor Chem 2020; 240:109657. [PMID: 33071313 PMCID: PMC7547832 DOI: 10.1016/j.jfluchem.2020.109657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/06/2020] [Accepted: 10/06/2020] [Indexed: 01/28/2023]
Abstract
Synthesis of the new 2-aryl-4-oxo-4H-polyfluorochromen-3-carboxylates as analogs of natural methoxy-containing flavones. The alternative flavone-5-hydroxyflavone and flavone-coumarin rearrangements of polyfluoroflavones in basic aqueous acetonitrile medium. New 7-(1H-imidazol-1-yl)-substituted polyfluorinated flavones and coumarins. Imidazolyl-functionalized flavones as high prospective antiviral agents.
A simple and convenient method for the synthesis of new methyl 2-(4-methoxyphenyl)- and 2-(3,4-dimethoxyphenyl)-4-oxo-4H-polyfluorochromen-3-carboxylates as analogs of natural methoxy-containing flavones is proposed. As a result of their directed modification under basic conditions, 7-imidazolyl-substituted derivatives were obtained. In aqueous-organic medium under basic conditions, 5,6,7,8-tetrafluoro-3-(methoxycarbonyl)flavones were transformed into 6,8-difluoro-5-hydroxy-7-(1H-imidazol-1-yl)-3-(methoxycarbonyl)flavones as a result of flavone-5-hydroxyflavone rearrangement, while 6,7,8-trifluorinated analogs underwent a flavone-coumarin rearrangement to give 6,8-difluoro-3-(hydroxyarylidene)-7-(1H-imidazol-1-yl)coumarins under the same conditions. Acid hydrolysis of methyl polyfluoroflavone-3-carboxylates allowed to obtain 2-aryl-4H-polyfluorochromen-4-ones. Evaluation of the antiviral activity of the synthesized compounds against influenza A (H1N1) and Coxsackie B3 viruses showed that 2-(3,4-dimethoxyphenyl)-5,6,8-trifluoro-7-(1H-imidazol-1-yl)-4H-chromene-4-one has the most promising properties.
Collapse
Affiliation(s)
- Konstantin V Shcherbakov
- Postovsky Institute of Organic Synthesis UD RAS, 22 Kovalevskoy str., Yekaterinburg, 620137, Russian Federation
| | - Mariya A Artemyeva
- Postovsky Institute of Organic Synthesis UD RAS, 22 Kovalevskoy str., Yekaterinburg, 620137, Russian Federation
| | - Yanina V Burgart
- Postovsky Institute of Organic Synthesis UD RAS, 22 Kovalevskoy str., Yekaterinburg, 620137, Russian Federation
| | - Victor I Saloutin
- Postovsky Institute of Organic Synthesis UD RAS, 22 Kovalevskoy str., Yekaterinburg, 620137, Russian Federation
| | - Alexandrina S Volobueva
- Institut Pasteur in Saint-Petersburg for Research in Epidemiology and Microbiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 14 Mira str., Saint-Petersburg, 197101, Russian Federation
| | - Maria A Misiurina
- Institut Pasteur in Saint-Petersburg for Research in Epidemiology and Microbiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 14 Mira str., Saint-Petersburg, 197101, Russian Federation
| | - Yana L Esaulkova
- Institut Pasteur in Saint-Petersburg for Research in Epidemiology and Microbiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 14 Mira str., Saint-Petersburg, 197101, Russian Federation
| | - Ekaterina O Sinegubova
- Institut Pasteur in Saint-Petersburg for Research in Epidemiology and Microbiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 14 Mira str., Saint-Petersburg, 197101, Russian Federation
| | - Vladimir V Zarubaev
- Institut Pasteur in Saint-Petersburg for Research in Epidemiology and Microbiology of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 14 Mira str., Saint-Petersburg, 197101, Russian Federation
| |
Collapse
|
147
|
Single Crystal X-Ray Structure for the Disordered Two Independent Molecules of Novel Isoflavone: Synthesis, Hirshfeld Surface Analysis, Inhibition and Docking Studies on IKKβ of 3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-6,7-dimethoxy-4H-chromen-4-one. CRYSTALS 2020. [DOI: 10.3390/cryst10100911] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The structure of the isoflavone compound, 3-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-6,7-dimethoxy-4H-chromen-4-one (5), was elucidated by 2D-NMR spectra, mass spectrum and single crystal X-ray crystallography. Compound 5, C19H16O6, was crystallized in the monoclinic space group P21/c with the cell parameters; a = 12.0654(5) Å, b =11.0666(5) Å, c = 23.9550(11) Å, β = 101.3757(16)°, V = 3135.7(2) Å3, and Z = 8. The asymmetric unit of compound 5 consists of two independent molecules 5I and 5II. Both molecules exhibit the disorder of each methylene group present in their 1,4-dioxane rings with relative occupancies of 0.599(10) (5I) and 0.812(9) (5II) for the major component A, and 0.401(10) (5I) and 0.188(9) (5II) for the minor component B, respectively. Each independent molecule revealed remarkable discrepancies in bond lengths, bond angles and dihedral angles in the disordered regions of 1,4-dioxane rings. The common feature of the molecules 5I and 5II are a chromone ring and a benzodioxin ring, which are more tilted towards each other in 5I than in 5II. An additional difference between the molecules is seen in the relative disposition of two methoxy substituents. In the crystal, the molecule 5II forms inversion dimers which are linked into chains along an a-axis direction by intermolecular C–H⋯O interactions. Additional C–H⋯O hydrogen bonds connected the molecules 5I and 5II each other to form a three-dimensional network. Hirshfeld surface analysis evaluated the relative intermolecular interactions which contribute to each crystal structure 5I and 5II. Western blot analysis demonstrated that compound 5 inhibited the TNFα-induced phosphorylation of IKKα/β, resulting in attenuating further downstream NF-κB signaling. A molecular docking study predicted the possible binding of compound 5 to the active site of IKKβ. Compound 5 showed an inhibitory effect on the clonogenicity of HCT116 human colon cancer cells. These results suggest that compound 5 can be used as a platform for the development of an anti-cancer agent targeting IKKα/β.
Collapse
|
148
|
Sung J. 3-(2-Methoxyphenyl)-2,3-dihydro-1 H-benzo[ f]chromen-1-one. IUCRDATA 2020; 5:x201209. [PMID: 36338917 PMCID: PMC9462287 DOI: 10.1107/s2414314620012092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 09/01/2020] [Indexed: 12/02/2022] Open
Abstract
In the title flavanone, the molecules are linked by weak C—H⋯O interactions into [101] chains. In the title compound, C20H16O3, the 2-methoxyphenyl ring is tilted by 50.67 (3)° with respect to the naphthyl ring system. The central pyran ring has an envelope conformation with the C atom bearing the pendant ring system as the flap. The methoxy group attached to the benzene ring is slightly twisted [C—C—O—C = −15.2 (1)°] from the ring. In the crystal, weak C—H⋯O interactions link the molecules into C(7) chains propagating along [101].![]()
Collapse
|
149
|
Shin SY, Yoo M, Koh D. Crystal structure of 6-methoxy-3-(5-(3-methoxyphenyl)-1,3,4-oxadiazol-2-yl)-4 H-chromen-4-one-methanol (1/1), C 20H 18N 2O 6. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2020-0298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C19H14N2O5 ⋅ CH3OH, monoclinic, P21/c (no. 14), a = 7.9074(3) Å, b = 20.4341(7) Å, c = 11.0406(4) Å, β = 92.6004(16)°, V = 1783.85(11) Å3, Z = 4, Rgt
(F) = 0.0467, wR
ref(F
2) = 0.1260, T = 223(2) K.
Collapse
Affiliation(s)
- Soon Young Shin
- Department of Biological Chemistry , Konkuk University , Seoul 05029, Republic of Korea
| | - Miri Yoo
- Department of Applied Chemistry , Dongduk Women’s University , Seoul 136-714, Republic of Korea
| | - Dongsoo Koh
- Department of Applied Chemistry , Dongduk Women’s University , Seoul 136-714, Republic of Korea
| |
Collapse
|
150
|
Boniface PK, Elizabeth FI. Flavones as a Privileged Scaffold in Drug Discovery: Current Developments. Curr Org Synth 2020; 16:968-1001. [PMID: 31984880 DOI: 10.2174/1570179416666190719125730] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/03/2019] [Accepted: 04/27/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Flavones are one of the main subclasses of flavonoids with diverse pharmacological properties. They have been reported to possess antimalarial, antimicrobial, anti-tuberculosis, anti-allergic, antioxidant, anti-inflammatory activities, among others. OBJECTIVE The present review summarizes the recent information on the pharmacological properties of naturally occurring and synthetic flavones. METHODS Scientific publications referring to natural and synthetic flavones in relation to their biological activities were hand-searched in databases such as SciFinder, PubMed (National Library of Medicine), Science Direct, Wiley, ACS, SciELO, Springer, among others. RESULTS As per the literature, seventy-five natural flavones were predicted as active compounds with reference to their IC50 (<20 µg/mL) in in vitro studies. Also, synthetic flavones were found active against several diseases. CONCLUSION As per the literature, flavones are important sources for the potential treatment of multifactorial diseases. However, efforts toward the development of flavone-based therapeutic agents are still needed. The appearance of new catalysts and chemical transformations is expected to provide avenues for the synthesis of unexplored flavones, leading to the discovery of flavones with new properties and biological activities.
Collapse
Affiliation(s)
- Pone K Boniface
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Ferreira I Elizabeth
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| |
Collapse
|