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Duong TH, Aree T, Le TKD, Dang VS, Nguyen NH, Sichaem J. Chemical constituents with their alpha-glucosidase inhibitory activity from the whole plant of Ceratophyllum demersum. PHYTOCHEMISTRY 2024; 229:114290. [PMID: 39332655 DOI: 10.1016/j.phytochem.2024.114290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 09/21/2024] [Accepted: 09/23/2024] [Indexed: 09/29/2024]
Abstract
From Ceratophyllum demersum growing in Vietnam, twelve compounds were isolated and structurally elucidated, including six previously undescribed compounds, demersones A-D (1-4), acetylvelutins A and B (8 and 9), together with six known compounds, (+)-cyclocolorenone (5), 1-hydroxycyclocolorenone (6), 10-hydroxycyclocolorenone (7), retusin (10), betulinic acid (11), and lupeol (12). The chemical structures and stereochemistry of 1-12 were identified through analysis of spectroscopic data (1D and 2D NMR and HRESIMS), ECD data, and DFT calculation. Notably, this is the first time that humulene-type (1 and 2), guaiane-type (3), and aromadendrane-type (4-7) sesquiterpenoids have been reported in this genus. Compounds 8 and 9 are the first examples of 8-acetoxyflavones found in nature. Upon evaluation of the alpha-glucosidase of 1-3 and 5-12, it was found that 12 exhibited the highest potential with an IC50 value of 15.4 ± 1.1 μM. The molecular docking of 3 and 8 was further studied.
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Affiliation(s)
- Thuc-Huy Duong
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, 52190, Thailand; Department of Chemistry, Ho Chi Minh City University of Education, 280 An Duong Vuong Street, District 5, Ho Chi Minh City, 748342, Vietnam
| | - Thammarat Aree
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Thi-Kim-Dung Le
- Laboratory of Biophysics, Institute for Advanced Study in Technology, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam; Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam
| | - Van-Son Dang
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 100000, Vietnam; Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan Street, District 3, Ho Chi Minh City, 700000, Vietnam
| | - Ngoc-Hong Nguyen
- CirTech Institute, HUTECH University, 475 A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City, 700000, Vietnam.
| | - Jirapast Sichaem
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, 52190, Thailand.
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2
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Niu Y, Cao YG, Liu YL, Chen X, Li XD, Ma XY, Lu D, Zheng XK, Feng WS. Three new flavonoid glycosides from the herbaceous stems of Ephedra intermedia. Nat Prod Res 2024:1-7. [PMID: 39301610 DOI: 10.1080/14786419.2024.2405993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 08/05/2024] [Accepted: 09/14/2024] [Indexed: 09/22/2024]
Abstract
Phytochemical investigation of the n-butanol extracts of the herbaceous stems of Epheda intermedia led to the isolation of eight flavonoids that included three new flavonoid glycosides (1-3) and five previously reported analogues (4-8). Their structures have been identified on the basis of various spectral data. Besides, all the flavonoids were tested in vitro for their ability to inhibit α-glucosidase under the positive control of acarbose, and the results indicated that none of them exhibited significant inhibitory effect on α-glucosidase at 100 μM.
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Affiliation(s)
- Ying Niu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Yan-Gang Cao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Yan-Ling Liu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Xu Chen
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Xiang-Da Li
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Xin-Yi Ma
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Di Lu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Xiao-Ke Zheng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructionby Henan province & Education Ministry of P. R. China, Zhengzhou, China
| | - Wei-Sheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China
- The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
- Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases Co-Constructionby Henan province & Education Ministry of P. R. China, Zhengzhou, China
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3
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Abilkassymova A, Aldana-Mejía JA, Katragunta K, Kozykeyeva R, Omarbekova A, Avula B, Turgumbayeva A, Datkhayev UM, Khan IA, Ross SA. Phytochemical Screening Using LC-MS to Study Antioxidant and Toxicity Potential of Methanolic Extracts of Atraphaxis pyrifolia Bunge. Molecules 2024; 29:4478. [PMID: 39339473 PMCID: PMC11434437 DOI: 10.3390/molecules29184478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2024] [Revised: 09/13/2024] [Accepted: 09/16/2024] [Indexed: 09/30/2024] Open
Abstract
Atraphaxis pyrifolia, a native medicinal plant of Central Asia, has a long history of traditional medicinal use; however, scientific research on its phytochemical and biological properties remains scarce. This paper aims to elucidate its chemical profile and assess its pharmacological potential through a comprehensive investigation of the phytochemical composition of stems and leaves using Liquid Chromatography-Mass Spectrometry (LC-MS), in conjunction with the assessment of its antioxidant (DPPH and ABTS) and cytotoxicity test on Artemia salina. Predominantly, glycosylated flavonoids were detected in stems and leaves extracts, notably including 8-Acetoxy-3',4',5,5'-tetrahydroxy-7-methoxy-3-α-L-rhamno-pyranosyloxyflavone, pyrifolin, and dehydroxypyrifolin. While the latter compound is exclusive to A. pyrifolia, the former compounds serve as shared chemical markers with other Atraphaxis species. The methanolic extracts of A. pyrifolia leaves exhibited significant antioxidant capacity without toxicity against Artemia salina. This study contributes to current research through providing valuable insights into the chemical diversity and potential medicinal properties of this plant species.
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Affiliation(s)
- Alima Abilkassymova
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (A.A.); (A.T.)
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan; (A.O.); (U.M.D.)
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (J.A.A.-M.); (K.K.); (R.K.); (B.A.); (I.A.K.)
| | - Jennyfer A. Aldana-Mejía
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (J.A.A.-M.); (K.K.); (R.K.); (B.A.); (I.A.K.)
| | - Kumar Katragunta
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (J.A.A.-M.); (K.K.); (R.K.); (B.A.); (I.A.K.)
| | - Raushan Kozykeyeva
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (J.A.A.-M.); (K.K.); (R.K.); (B.A.); (I.A.K.)
- Faculty of Pharmacy, South Kazakhstan Medical Academy, Shymkent 160019, Kazakhstan
| | - Ardak Omarbekova
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan; (A.O.); (U.M.D.)
- Faculty of Pharmacy, South Kazakhstan Medical Academy, Shymkent 160019, Kazakhstan
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (J.A.A.-M.); (K.K.); (R.K.); (B.A.); (I.A.K.)
| | - Aknur Turgumbayeva
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (A.A.); (A.T.)
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan; (A.O.); (U.M.D.)
| | - Ubaidilla M. Datkhayev
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan; (A.O.); (U.M.D.)
| | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (J.A.A.-M.); (K.K.); (R.K.); (B.A.); (I.A.K.)
- Department of Biomolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA
| | - Samir A. Ross
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan; (A.O.); (U.M.D.)
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (J.A.A.-M.); (K.K.); (R.K.); (B.A.); (I.A.K.)
- Department of Biomolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA
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Linh KTP, Trung VT, Trang DT, Binh PT, Cuong NT, Thanh NV, Cuong NX, Nam NH, Thao NP. Chemical constituents from the leaves of Sindora siamensis var. maritima and their antimicrobial and α-glucosidase inhibitory activities. Carbohydr Res 2024; 537:109074. [PMID: 38452719 DOI: 10.1016/j.carres.2024.109074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/16/2024] [Accepted: 03/01/2024] [Indexed: 03/09/2024]
Abstract
Two new glycosides, sindosides A-B (1-2), along with 11 previously identified metabolites (3-13), were isolated from an ethanolic extract of the leaves of Sindora siamensis var. maritima. The structures of the purified phytochemicals were elucidated by interpreting their spectroscopic data (IR, NMR, and HRMS). The absolute configuration of compound 1 was established by experimental and calculated ECD spectra. The antimicrobial results revealed that compound 8 selectively inhibited C. albicans fungal with a MIC value of 64 μg/mL, whereas 11 presented a weak inhibition toward E. faecalis, S. aureus, and B. cereus bacterial strains with the same MIC value of 128 μg/mL. Interestingly, compounds 1, 2, 8, 9, and 11 showed α-glucosidase inhibitory activity with IC50 values ranging from 14.42 ± 0.21 to 30.62 ± 0.18 μM, which were more active than the positive control (acarbose, with an IC50 value of 46.78 ± 1.37 μM). Enzyme kinetic analysis revealed that compounds 1, 2, and 11 behaved as uncompetitive inhibitors with Ki values of 8.60 ± 1.04, 5.16 ± 0.73, and 7.17 ± 0.98 μM, respectively.
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Affiliation(s)
- Kieu Thi Phuong Linh
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam
| | - Vu Thanh Trung
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam
| | - Duong Thu Trang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam
| | - Pham Thanh Binh
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam
| | - Nguyen The Cuong
- Institute of Ecology and Biological Resources, VAST, Cau Giay, Hanoi, Viet Nam
| | - Nguyen Van Thanh
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam
| | - Nguyen Xuan Cuong
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam
| | - Nguyen Hoai Nam
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam
| | - Nguyen Phuong Thao
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Viet Nam.
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Abilkassymova A, Turgumbayeva A, Sarsenova L, Tastambek K, Altynbay N, Ziyaeva G, Blatov R, Altynbayeva G, Bekesheva K, Abdieva G, Ualieva P, Shynykul Z, Kalykova A. Exploring Four Atraphaxis Species: Traditional Medicinal Uses, Phytochemistry, and Pharmacological Activities. Molecules 2024; 29:910. [PMID: 38398660 PMCID: PMC10891555 DOI: 10.3390/molecules29040910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/03/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
Atraphaxis is a genus of flowering plants in the family Polygonaceae, with approximately 60 species. Species of Atraphaxis are much-branched woody plants, forming shrubs or shrubby tufts, primarily inhabiting arid zones across the temperate steppe and desert regions of Central Asia, America, and Australia. Atraphaxis species have been used by diverse groups of people all over the world for the treatment of various diseases. However, their biologically active compounds with therapeutic properties have not been investigated well. Studying the biologically active components of Atraphaxis laetevirens, Atraphaxis frutescens, Atraphaxis spinosa L., and Atraphaxis pyrifolia is crucial for several reasons. Firstly, it can unveil the therapeutic potential of these plants, aiding in the development of novel medicines or natural remedies for various health conditions. Understanding their bioactive compounds enables scientists to explore their pharmacological properties, potentially leading to the discovery of new drugs or treatments. Additionally, investigating these components contributes to preserving traditional knowledge and validating the historical uses of these plants in ethnomedicine, thus supporting their conservation and sustainable utilization. These herbs have been used as an anti-inflammatory and hypertension remedies since the dawn of time. Moreover, they have been used to treat a variety of gastrointestinal disorders and problems related to skin in traditional Kazakh medicine. Hence, the genus Atraphaxis can be considered as a potential medicinal plant source that is very rich in biologically active compounds that may exhibit great pharmacological properties, such as antioxidant, antibacterial, antiulcer, hypoglycemic, wound healing, neuroprotective, antidiabetic, and so on. This study aims to provide a collection of publications on the species of Atraphaxis, along with a critical review of the literature data. This review will constitute support for further investigations on the pharmacological activity of these medicinal plant species.
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Affiliation(s)
- Alima Abilkassymova
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (L.S.); (Z.S.); (A.K.)
| | - Aknur Turgumbayeva
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (L.S.); (Z.S.); (A.K.)
- School of Life Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, UK
| | - Lazzat Sarsenova
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (L.S.); (Z.S.); (A.K.)
| | - Kuanysh Tastambek
- Institute of Ecology, Khoja Akhmet Yassawi International Kazakh-Turkish University, Turkistan 161200, Kazakhstan;
| | - Nazym Altynbay
- Institute of Ecological Problems, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050040, Kazakhstan;
| | - Gulnar Ziyaeva
- Department of Biology, Taraz Regional University Named after M.Kh.Dulaty, Taraz 080000, Kazakhstan;
| | - Ravil Blatov
- Department of Pharmacy, Kazakh-Russian Medical University, Almaty 050000, Kazakhstan;
| | - Gulmira Altynbayeva
- School of Pharmacy, JSC “S.D. Asfendiyarov Kazakh National Medical University”, Almaty 050000, Kazakhstan;
- Neonatology and Neonatal Surgery Department, JSC “Scientific Center of Pediatrics and Pediatric Surgery”, Almaty 050060, Kazakhstan
| | - Kuralay Bekesheva
- JSC “Scientific Centre for Anti-Infectious Drugs”, Almaty 010000, Kazakhstan;
| | - Gulzhamal Abdieva
- Department of Biotechnology, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan; (G.A.); (P.U.)
| | - Perizat Ualieva
- Department of Biotechnology, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan; (G.A.); (P.U.)
| | - Zhanserik Shynykul
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (L.S.); (Z.S.); (A.K.)
| | - Assem Kalykova
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (L.S.); (Z.S.); (A.K.)
- School of Life Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, UK
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Abilkassymova A, Kozykeyeva R, Aldana-Mejía JA, John Adams S, Datkhayev U, Turgumbayeva A, Orynbassarova K, Saroja SG, Khan IA, Ross SA. Phytochemical and Micro-Morphological Characterization of Atraphaxis pyrifolia Bunge Growing in the Republic of Kazakhstan. Molecules 2024; 29:833. [PMID: 38398586 PMCID: PMC10891614 DOI: 10.3390/molecules29040833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/09/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Atraphaxis pyrifolia is a native species of Central Asia, known for curing several disorders. The species has little knowledges about its chemical composition and any information about its morphological characteristics despite its importance in traditional Asian medicine. This is one of the first approaches to the phytochemical and morphological characterization of this species. Micro-morphology was performed on the stem, and leaf parts of this plant to profile the morpho-anatomical characters using brightfield, fluorescence, polarized and scanning electron microscopy. Leaves were extracted with hexane and methanol. The hexane extract was analyzed using GC-MS analysis revealing the major presence of γ-sitosterol and nonacosane. The methanolic extract was submitted to Vacuum Liquid Chromatography and Sephadex LH-20. HPTLC, HR-ESI-MS and NMR techniques were used to identify the main compounds. Four glycosylated flavonoids were isolated: 8-O-acetyl-7-O-methyl-3-O-α-l-rhamnopyranosylgossypetin (Compound 1), and 7-O-methyl-3-O-α-l-rhamnopyranosylgossypetin (Compound 3), and two other compounds reported for the first time in the literature (Compounds 2 and 4). The findings presented herein furnish pertinent information essential for the identification and authentication of this medicinal plant. Such insights are invaluable for facilitating robust quality control measures and serve as a foundational framework for subsequent endeavours in metabolic, pharmacological, and taxonomical analyses.
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Affiliation(s)
- Alima Abilkassymova
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (A.A.); (A.T.)
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Raushan Kozykeyeva
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
- Department of Pharmacognosy, Faculty of Pharmacy, South Kazakhstan Medical Academy, Shymkent 160019, Kazakhstan;
| | - Jennyfer Andrea Aldana-Mejía
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Sebastian John Adams
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Ubaidilla Datkhayev
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
| | - Aknur Turgumbayeva
- Higher School of Medicine, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan; (A.A.); (A.T.)
- School of Life Sciences, University of Westminster, London W1W 6UW, UK
| | - Kulpan Orynbassarova
- Department of Pharmacognosy, Faculty of Pharmacy, South Kazakhstan Medical Academy, Shymkent 160019, Kazakhstan;
| | - Seethapathy G. Saroja
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
| | - Ikhlas A. Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
- Department of Biomolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA
| | - Samir A. Ross
- School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan;
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS 38677, USA; (R.K.); (J.A.A.-M.); (S.J.A.); (S.G.S.); (I.A.K.)
- Department of Biomolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA
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Onocha PA, Okpala EO, Ali MS, Rahman N, Zafar H, Oloyede GK, Nwozo SO, Lateef M. Partial syntheses of aromatic amides: their anti-urease potential and docking studies. J Biomol Struct Dyn 2023:1-12. [PMID: 37787574 DOI: 10.1080/07391102.2023.2263876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/21/2023] [Indexed: 10/04/2023]
Abstract
The aromatic amide: N-p-trans-coumaroyltyramine (1) was isolated for the first time from the stem bark of Celtis zenkeri (Ulmaceae). Its four new derivatives (1a-d) and previously reported diacetylated product (1e) have been synthesized and characterized spectroscopically followed by their in vitro screening for anti-urease potential. The diacetylated product (1e) was found to be the most potent inhibitor with an IC50 value of 19.5 ± 0.23 μM compared to thiourea used as standard (21.5 ± 0.47 μM). Furthermore, molecular docking studies were conducted revealing striking interactions of the active compounds with catalytically important residues such as His593, Ala636 and Asp633. Subsequently, the prime MM-GBSA calculations provided the ligand binding and strain energies. The molecular dynamic simulations validated the docked and post-docked complexes where compounds 1b, 1c, 1d and 1e remained stable throughout the simulation. This study provides insight into the N-p-trans-coumaroyltyramine derivatives (1b-e) that can block the substrate entry, thereby inhibiting the urease's catalytic activity. Hence, these hit compounds can proceed for further pre-clinical studies for drug discovery against urease.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Patricia Akpomedaye Onocha
- Natural Products/Medicinal Chemistry Unit, Department of Chemistry, University of Ibadan, Ibadan, Nigeria
| | | | - Muhammad Shaiq Ali
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, Pakistan
| | - Noor Rahman
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, Pakistan
| | - Humaira Zafar
- Dr. Panjwani Center for Molecular Medicine and Drug Research International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Ganiyat Kehinde Oloyede
- Natural Products/Medicinal Chemistry Unit, Department of Chemistry, University of Ibadan, Ibadan, Nigeria
| | - Sarah Oyenibe Nwozo
- Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Mehreen Lateef
- Multi-Disciplinary Research Lab. Bahria University, Medical and Dental College, Karachi, Pakistan
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Li MX, Kang KW, Huang M, Cheng R, Wang W, Gao J, Wang J. Simple and rapid detection of tyrosinase activity with the adjustable light scattering properties of CoOOH nanoflakes. Anal Bioanal Chem 2023:10.1007/s00216-023-04710-x. [PMID: 37171584 DOI: 10.1007/s00216-023-04710-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/18/2023] [Accepted: 03/28/2023] [Indexed: 05/13/2023]
Abstract
Tyrosinase (TYR), as an important biological enzyme, has been widely used in synthetic biology, medical hairdressing, environmental detection, biological sensors, and other fields. In clinical practice, tyrosinase activity is an important indicator for detecting melanoma. Therefore, the detection of tyrosinase activity is of great importance. Based on the polyphenol oxidase activity of tyrosinase, a simple and rapid detection method was proposed based on the adjustable light scattering properties of cobalt hydroxyl oxide nanoflakes (CoOOH NFs). It was found that the amount and size of CoOOH NFs decreased due to the redox reaction mediated by catechol (CC), resulting in a lower light scattering signal of CoOOH NFs. However, in the presence of tyrosinase, catechol was oxidized to a quinone structure, resulting in the reduced decomposition of CoOOH NFs and recovered light scattering signal, which was developed for the quantitative detection of tyrosinase activity. It was found that in the range of 10-400 U/L, the light scattering intensity was correlated linearly with tyrosinase activity, and the limit of detection was 6.71 U/L (3σ/k). To verify the feasibility of the proposed method in clinical samples, the spiked recovery experiments were carried out with human serum samples, which showed recovery rates between 93.0% and 104.6%, suggesting the high accuracy. The proposed assay provides a simple and rapid method for detection of a natural enzyme based on the adjustable light scattering properties of CoOOH nanoflakes, which lays the foundation for the development of various enzyme sensing applications in the future.
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Affiliation(s)
- Meng Xiao Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Kai Wen Kang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Min Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Ru Cheng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Wei Wang
- The People's Hospital of Qingdao West Coast New Area, Qingdao, Shandong, 266499, People's Republic of China
| | - Jie Gao
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, People's Republic of China
| | - Jian Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, People's Republic of China.
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9
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Umer SM, Shamim S, Khan KM, Saleem RSZ. Perplexing Polyphenolics: The Isolations, Syntheses, Reappraisals, and Bioactivities of Flavonoids, Isoflavonoids, and Neoflavonoids from 2016 to 2022. Life (Basel) 2023; 13:life13030736. [PMID: 36983891 PMCID: PMC10058313 DOI: 10.3390/life13030736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/30/2023] Open
Abstract
Flavonoids, isoflavonoids, neoflavonoids, and their various subcategories are polyphenolics-an extensive class of natural products. These compounds are bioactive and display multiple activities, including anticancer, antibacterial, antiviral, antioxidant, and neuroprotective activities. Thus, these compounds can serve as leads for therapeutic agents or targets for complex synthesis; they are coveted and routinely isolated, characterized, biologically evaluated, and synthesized. However, data regarding the compounds' sources, isolation procedures, structural novelties, bioactivities, and synthetic schemes are often dispersed and complex, a dilemma this review aims to address. To serve as an easily accessible guide for researchers wanting to apprise themselves of the latest advancements in this subfield, this review summarizes seventy-six (76) articles published between 2016 and 2022 that detail the isolation and characterization of two hundred and forty-nine (249) novel compounds, the total and semisyntheses of thirteen (13) compounds, and reappraisals of the structures of twenty (20) previously reported compounds and their bioactivities. This article also discusses new synthetic methods and enzymes capable of producing or modifying flavonoids, isoflavonoids, or neoflavonoids.
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Affiliation(s)
- Syed Muhammad Umer
- Department of Chemistry and Chemical Engineering, SBASSE, Lahore University of Management Sciences, Sector-U, DHA, Lahore 54792, Pakistan
| | - Shahbaz Shamim
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Khalid Mohammed Khan
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam P.O. Box 31441, Saudi Arabia
| | - Rahman Shah Zaib Saleem
- Department of Chemistry and Chemical Engineering, SBASSE, Lahore University of Management Sciences, Sector-U, DHA, Lahore 54792, Pakistan
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10
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Wisetsai A, Choodej S, Ngamrojanavanich N, Pudhom K. Fatty acid acylated flavonol glycosides from the seeds of Nephelium lappaceum and their nitric oxide suppression activity. PHYTOCHEMISTRY 2022; 201:113262. [PMID: 35660550 DOI: 10.1016/j.phytochem.2022.113262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/26/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
Five undescribed fatty acid esters of flavonol glycosides, nephelosides A-E, along with eight known compounds, were isolated from the seeds of Nephelium lappaceum L. The structures were elucidated by extensive analysis of spectroscopic data in combination with GC-MS analysis. Potency of compounds toward nitric oxide suppression was assessed by monitoring the inhibition of lipopolysaccharide-stimulated nitric oxide production in J744.A1 macrophage cells. Nepheloside D, kaempferol and kaempferol 7-O-α-L-rhamnopyranoside showed significant activity with IC50 values of 26.5, 11.6 and 12.0 μM, respectively.
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Affiliation(s)
- Awat Wisetsai
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Siwattra Choodej
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | | | - Khanitha Pudhom
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
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11
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Insights on the Inhibitory Power of Flavonoids on Tyrosinase Activity: A Survey from 2016 to 2021. Molecules 2021; 26:molecules26247546. [PMID: 34946631 PMCID: PMC8705159 DOI: 10.3390/molecules26247546] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 02/08/2023] Open
Abstract
Tyrosinase is a multifunctional copper-containing oxidase enzyme that initiates melanin synthesis in humans. Excessive accumulation of melanin pigments or the overexpression of tyrosinase may result in skin-related disorders such as aging spots, wrinkles, melasma, freckles, lentigo, ephelides, nevus, browning and melanoma. Nature expresses itself through the plants as a source of phytochemicals with diverse biological properties. Among these bioactive compounds, flavonoids represent a huge natural class with different categories such as flavones, flavonols, isoflavones, flavan-3-ols, flavanones and chalcones that display antioxidant and tyrosinase inhibitor activities with a diversity of mechanistic approaches. In this review, we explore the role of novel or known flavonoids isolated from different plant species and their participation as tyrosinase inhibitors reported in the last five years from 2016 to 2021. We also discuss the mechanistic approaches through the different studies carried out on these compounds, including in vitro, in vivo and in silico computational research. Information was obtained from Google Scholar, PubMed, and Science Direct. We hope that the updated comprehensive data presented in this review will help researchers to develop new safe, efficacious, and effective drug or skin care products for the prevention of and/or protection against skin-aging disorders.
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12
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Evidente A, Masi M. Natural Bioactive Cinnamoyltyramine Alkylamides and Co-Metabolites. Biomolecules 2021; 11:1765. [PMID: 34944409 PMCID: PMC8698393 DOI: 10.3390/biom11121765] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/20/2021] [Accepted: 11/21/2021] [Indexed: 12/03/2022] Open
Abstract
Natural products are a vital source for agriculture, medicine, cosmetic and other fields. Among them alkylamides are a broad and expanding group found in at least 33 plant families. Frequently, they possess a simple carbon skeleton architecture but show broad structural variability and important properties such as immunomodulatory, antimicrobial, antiviral, larvicidal, insecticidal and antioxidant properties, amongst others. Despite to these several and promising biological activities, up to today, only two reviews have been published on natural alkylamides. One focuses on their potential pharmacology application and their distribution in the plant kingdom and the other one on the bioactive alkylamides specifically found in Annona spp. The present review is focused on the plant bioactive cinnamoyltyramine alkylamides, which are subject of several works reported in the literature. Furthermore, the co-metabolites isolated from the same natural sources and their biological activities are also reported.
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Affiliation(s)
- Antonio Evidente
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte Sant’Angelo, Via Cintia 4, 80126 Naples, Italy;
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13
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Méndez D, Escalona-Arranz JC, Pérez EM, Foubert K, Matheeussen A, Tuenter E, Cuypers A, Cos P, Pieters L. Antifungal Activity of Extracts, Fractions, and Constituents from Coccoloba cowellii Leaves. Pharmaceuticals (Basel) 2021; 14:ph14090917. [PMID: 34577616 PMCID: PMC8469486 DOI: 10.3390/ph14090917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/03/2021] [Accepted: 09/08/2021] [Indexed: 12/01/2022] Open
Abstract
Coccoloba cowellii Britton (Polygonaceae, order Caryophyllales) is an endemic and critically endangered plant species that only grows in the municipality of Camagüey, a province of Cuba. A preliminary investigation of its total methanolic extract led to the discovery of promising antifungal activity. In this study, a bioassay-guided fractionation allowed the isolation of quercetin and four methoxyflavonoids: 3-O-methylquercetin, myricetin 3,3′,4′-trimethyl ether, 6-methoxymyricetin 3,4′-dimethyl ether, and 6-methoxymyricetin 3,3′,4′-trimethyl ether. The leaf extract, fractions, and compounds were tested against various fungi and showed strong in vitro antifungal activity against Cryptococcus neoformans and various Candida spp. with no cytotoxicity (CC50 > 64.0 µg/mL) on MRC-5 SV2 cells, determined by a resazurin assay. A Candida albicans SC5314 antibiofilm assay indicated that the antifungal activity of C. cowellii extracts and constituents is mainly targeted to planktonic cells. The total methanolic extract showed higher and broader activity compared with the fractions and mixture of compounds.
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Affiliation(s)
- Daniel Méndez
- Chemistry Department, Faculty of Applied Sciences, University of Camagüey, Carretera de Circunvalación Km 5½, Camagüey 74650, Cuba; (D.M.); (E.M.P.)
| | - Julio C. Escalona-Arranz
- Pharmacy Department, Faculty of Natural and Exact Sciences, Universidad de Oriente, Avenida Patricio Lumumba s/n, Santiago de Cuba 90500, Cuba
- Correspondence: (J.C.E.-A.); (L.P.)
| | - Enrique Molina Pérez
- Chemistry Department, Faculty of Applied Sciences, University of Camagüey, Carretera de Circunvalación Km 5½, Camagüey 74650, Cuba; (D.M.); (E.M.P.)
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, BE-2610 Antwerp, Belgium; (K.F.); (E.T.)
| | - An Matheeussen
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, BE-2610 Antwerp, Belgium; (A.M.); (P.C.)
| | - Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, BE-2610 Antwerp, Belgium; (K.F.); (E.T.)
| | - Ann Cuypers
- Centre for Environmental Sciences, Campus Diepenbeek, Hasselt University, Agoralaan Building D, BE-3590 Diepenbeek, Belgium;
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, BE-2610 Antwerp, Belgium; (A.M.); (P.C.)
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, BE-2610 Antwerp, Belgium; (K.F.); (E.T.)
- Correspondence: (J.C.E.-A.); (L.P.)
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14
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Pares RB, Alves DS, Alves LFA, Godinho CC, Gobbo Neto L, Ferreira TT, Nascimento MM, Ascari J, Oliveira DF. Acaricidal Activity of Annonaceae Plants for Dermanyssus gallinae (Acari: Dermanyssidae) and Metabolomic Profile by HPLC-MS/MS. NEOTROPICAL ENTOMOLOGY 2021; 50:662-672. [PMID: 34184236 DOI: 10.1007/s13744-021-00885-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 05/19/2021] [Indexed: 06/13/2023]
Abstract
The poultry red mite Dermanyssus gallinae (De Geer) is the most important haematophagous ectoparasite in the poultry industry. The use of synthetic acaricides for this control is presenting risks related to human food. In this sense, plant secondary metabolites are promising for controlling this pest. Thus, this study aimed to evaluate the acaricidal activity of Duguetia lanceolata A.St.-Hil. (stem bark), Xylopia emarginata Mart. (stem bark), and Xylopia sericea A.St.-Hil. (stem bark and fruits) against D. gallinae. Additionally, the secondary metabolite profile of the X. emarginata was analysed by UFLC-DAD-ESI(+)-MS/MS (micrOTOF-QII) and data analysis was performed using the Molecular Networking. In a topical application test, all plant species tested showed bioactivity, in that order of toxicity with the respective probability survival: X. emarginata (stem bark) (0.28) > X. sericea (stem barks) (0.35) > X. sericea (fruits) and D. lanceolata (stem bark) (0.47). The most promising results were found for X. emarginata (LC50 = 331.769 μg/cm2). It is noteworthy that the LC50 of the insecticide cypermethrin was 1234.4 μg/cm2, which was 73% higher than that of X. emarginata. The metabolomic profile of X. emarginata revealed the presence of alkaloids, amides, terpenoids, and phenolic compounds. This is the first report of X. emarginata acaricidal activity against D. gallinae and exploratory chemical analysis by untargeted metabolomics and the molecular network of this plant.
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Affiliation(s)
| | - Dejane Santos Alves
- Univ Tecnológica Federal do Paraná - UTFPR, Santa Helena, Paraná, CEP 85892-000, Brazil.
| | | | | | | | | | | | - Jociani Ascari
- Univ Tecnológica Federal do Paraná - UTFPR, Santa Helena, Paraná, CEP 85892-000, Brazil
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15
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Banzragchgarav O, Ariefta NR, Murata T, Myagmarsuren P, Battsetseg B, Battur B, Batkhuu J, Nishikawa Y. Evaluation of Mongolian compound library for potential antimalarial and anti-Toxoplasma agents. Parasitol Int 2021; 85:102424. [PMID: 34302982 DOI: 10.1016/j.parint.2021.102424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 07/17/2021] [Accepted: 07/17/2021] [Indexed: 11/17/2022]
Abstract
179 compounds in a Mongolian compound library were investigated for their inhibitory effect on the in vitro growth of Plasmodium falciparum and Toxoplasma gondii. Among these compounds, brachangobinan A at a half-maximal inhibition concentration (IC50) of 2.62 μM and a selectivity index (SI) of 27.91; 2-(2'-hydroxy-5'-O-methylphenyl)-5-(2″,5″-dihydroxyphenyl)oxazole (IC50 3.58 μM and SI 24.66); chrysosplenetin (IC50 3.78 μM and SI 15.26); 4,11-di-O-galloylbergenin (IC50 3.87 μM and SI 13.38); and 2-(2',5'-dihydroxyphenyl)-5-(2″-hydroxyphenyl)oxazole (IC50 6.94 μM and SI 11.48) were identified as potential inhibitors of P. falciparum multiplication. Additionally, tricin (IC50 12.94 μM and SI > 23.40) was identified as a potential inhibitor of T. gondii multiplication. Our findings represent a good starting point for developing novel antimalarial and anti-Toxoplasma therapeutics from Mongolian compounds.
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Affiliation(s)
- Orkhon Banzragchgarav
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan; Institute of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar 17024, Mongolia
| | - Nanang R Ariefta
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan
| | - Toshihiro Murata
- Division of Pharmacognosy, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan
| | | | - Badgar Battsetseg
- Institute of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar 17024, Mongolia
| | - Banzragch Battur
- Institute of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar 17024, Mongolia; Graduate School, Mongolian University of Life Science, Ulaanbaatar 17024, Mongolia
| | - Javzan Batkhuu
- School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar 14201, Mongolia
| | - Yoshifumi Nishikawa
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
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16
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Fu J, Wang H, Dong C, Xi C, Xie J, Lai S, Chen R, Kang J. Water-soluble alkaloids isolated from Portulaca oleracea L. Bioorg Chem 2021; 113:105023. [PMID: 34091292 DOI: 10.1016/j.bioorg.2021.105023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/16/2021] [Accepted: 05/24/2021] [Indexed: 11/16/2022]
Abstract
Fifteen new water-soluble alkaloids were obtained from the fresh herbs of Portulaca oleracea L. The structures of 15 alkaloids 1-15 were established according to spectroscopic data, and the stereoconfigurations were determined based on experimental and calculated electronic circular dichroism (ECD) data and single crystal X-ray diffraction. Alkaloids 1-15 were found to display good anti-inflammatory activity at 10 μM and could significantly reduce the interleukin-6 (IL-6) and nitric oxide (NO) levels induced by lipopolysaccharide (LPS) in RAW 264.7 macrophages.
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Affiliation(s)
- Jia Fu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Hongqing Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Chaoxuan Dong
- Department of Anesthesiology, The First Affiliated Hospital of Jinan University, Guangzhou Overseas Chinese Hospital, Jinan University, 613 W. Huangpu Avenue, Guangzhou, Guangdong Province 510630, China
| | - Chuchu Xi
- Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu Province 211198, China
| | - Jun Xie
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Shengtian Lai
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Ruoyun Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, China
| | - Jie Kang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, China.
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17
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Murata T, Batkhuu J. Biological activity evaluations of chemical constituents derived from Mongolian medicinal forage plants and their applications in combating infectious diseases and addressing health problems in humans and livestock. J Nat Med 2021; 75:729-740. [PMID: 34018093 PMCID: PMC8137442 DOI: 10.1007/s11418-021-01529-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 05/06/2021] [Indexed: 12/11/2022]
Abstract
Mongolian nomadic people possess traditional knowledge of wild plants that grow in their areas of habitation. Many of these are forage plants in nature and are consumed by livestock. However, these plants are known to have medicinal and/or toxic properties. To establish a scientific understanding of the plants, and in turn, offer sound knowledge on their applications and effective use, it is essential to collect data pertaining to the chemical constituents of each plant. Therefore, the first objective of this study was to identify and determine the structural constituents of the forage plants that were available to our research group. Furthermore, in an attempt to demonstrate the biological activities of the isolated chemical compounds, we focused on solving some of the social issues affecting Mongolian communities, including protozoan diseases affecting livestock, vectors of infectious diseases, and the general health of humans and their livestock. The results of the chemical constituents derived from Mongolian medicinal plants and their biological activities that were studied in the recent decade are also described herein.
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Affiliation(s)
- Toshihiro Murata
- Division of Pharmacognosy, Tohoku Medical and Pharmaceutical University, 4-1 Komatsushima 4-chome, Aoba-ku, Sendai, 981-8558, Japan.
| | - Javzan Batkhuu
- School of Engineering and Applied Sciences, National University of Mongolia, POB-617/46A, Ulaanbaatar, 14201, Mongolia
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18
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Umbetova AK, Beyatli A, Seitimova GA, Yeskaliyeva BK, Burasheva GS. Flavonoids from the Plant Atraphaxis virgata. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03405-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Wang DD, Li P, Chen QY, Chen XY, Yan ZW, Wang MY, Mao YB. Differential Contributions of MYCs to Insect Defense Reveals Flavonoids Alleviating Growth Inhibition Caused by Wounding in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2021; 12:700555. [PMID: 34326858 PMCID: PMC8313826 DOI: 10.3389/fpls.2021.700555] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/17/2021] [Indexed: 05/20/2023]
Abstract
In Arabidopsis, basic helix-loop-helix transcription factors (TFs) MYC2, MYC3, and MYC4 are involved in many biological processes, such as defense against insects. We found that despite functional redundancy, MYC-related mutants displayed different resistance to cotton bollworm (Helicoverpa armigera). To screen out the most likely genes involved in defense against insects, we analyzed the correlation of gene expression with cotton bollworm resistance in wild-type (WT) and MYC-related mutants. In total, the expression of 94 genes in untreated plants and 545 genes in wounded plants were strongly correlated with insect resistance, and these genes were defined as MGAIs (MYC-related genes against insects). MYC3 had the greatest impact on the total expression of MGAIs. Gene ontology (GO) analysis revealed that besides the biosynthesis pathway of glucosinolates (GLSs), MGAIs, which are well-known defense compounds, were also enriched in flavonoid biosynthesis. Moreover, MYC3 dominantly affected the gene expression of flavonoid biosynthesis. Weighted gene co-expression network analysis (WGCNA) revealed that AAE18, which is involved in activating auxin precursor 2,4-dichlorophenoxybutyric acid (2,4-DB) and two other auxin response genes, was highly co-expressed with flavonoid biosynthesis genes. With wounding treatment, the WT plants exhibited better growth performance than chalcone synthase (CHS), which was defective in flavonoid biosynthesis. The data demonstrated dominant contributions of MYC3 to cotton bollworm resistance and imply that flavonoids might alleviate the growth inhibition caused by wounding in Arabidopsis.
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Affiliation(s)
- Dan-Dan Wang
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
| | - Pai Li
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qiu-Yi Chen
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xue-Ying Chen
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- School of Life Sciences and Technology, ShanghaiTech University, Shanghai, China
| | - Zi-Wei Yan
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Mu-Yang Wang
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Ying-Bo Mao
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- *Correspondence: Ying-Bo Mao,
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Pederson PJ, Cai S, Carver C, Powell DR, Risinger AL, Grkovic T, O'Keefe BR, Mooberry SL, Cichewicz RH. Triple-Negative Breast Cancer Cells Exhibit Differential Sensitivity to Cardenolides from Calotropis gigantea. JOURNAL OF NATURAL PRODUCTS 2020; 83:2269-2280. [PMID: 32649211 PMCID: PMC7540184 DOI: 10.1021/acs.jnatprod.0c00423] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Triple-negative breast cancers (TNBC) are aggressive and heterogeneous cancers that lack targeted therapies. We implemented a screening program to identify new leads for subgroups of TNBC using diverse cell lines with different molecular drivers. Through this program, we identified an extract from Calotropis gigantea that caused selective cytotoxicity in BT-549 cells as compared to four other TNBC cell lines. Bioassay-guided fractionation of the BT-549 selective extract yielded nine cardenolides responsible for the selective activity. These included eight known cardenolides and a new cardenolide glycoside. Structure-activity relationships among the cardenolides demonstrated a correlation between their relative potencies toward BT-549 cells and Na+/K+ ATPase inhibition. Calotropin, the compound with the highest degree of selectivity for BT-549 cells, increased intracellular Ca2+ in sensitive cells to a greater extent than in the resistant MDA-MB-231 cells. Further studies identified a second TNBC cell line, Hs578T, that is also highly sensitive to the cardenolides, and mechanistic studies were conducted to identify commonalities among the sensitive cell lines. Experiments showed that both cardenolide-sensitive cell lines expressed higher mRNA levels of the Na+/Ca2+ exchanger NCX1 than resistant TNBC cells. This suggests that NCX1 could be a biomarker to identify TNBC patients that might benefit from the clinical administration of a cardiac glycoside for anticancer indications.
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Affiliation(s)
- Petra J Pederson
- Department of Pharmacology, University of Texas Health Science Center, San Antonio, Texas 78229, United States
- Mays Cancer Center, University of Texas Health Science Center, San Antonio, Texas 78229, United States
| | - Shengxin Cai
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, Stephenson Life Science Research Center, University of Oklahoma, Norman, Oklahoma 73019, United States
- Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Chase Carver
- Department of Cellular and Integrative Physiology, University of Texas Health Science Center, San Antonio, Texas 78229, United States
| | - Douglas R Powell
- Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - April L Risinger
- Department of Pharmacology, University of Texas Health Science Center, San Antonio, Texas 78229, United States
- Mays Cancer Center, University of Texas Health Science Center, San Antonio, Texas 78229, United States
| | - Tanja Grkovic
- Natural Products Support Group, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United States
| | - Barry R O'Keefe
- Natural Products Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702, United States
| | - Susan L Mooberry
- Department of Pharmacology, University of Texas Health Science Center, San Antonio, Texas 78229, United States
- Mays Cancer Center, University of Texas Health Science Center, San Antonio, Texas 78229, United States
| | - Robert H Cichewicz
- Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, Stephenson Life Science Research Center, University of Oklahoma, Norman, Oklahoma 73019, United States
- Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, Norman, Oklahoma 73019, United States
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21
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Wei L, Xu C, Liang A, Fu Y. Insect-resistant Mechanism of Recombinant Baculovirus AcMNPV-PK2-EGFP against Spodoptera exigua Larvae. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-019-0002-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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So HM, Yu JS, Khan Z, Subedi L, Ko YJ, Lee IK, Park WS, Chung SJ, Ahn MJ, Kim SY, Kim KH. Chemical constituents of the root bark of Ulmus davidiana var. japonica and their potential biological activities. Bioorg Chem 2019; 91:103145. [PMID: 31357073 DOI: 10.1016/j.bioorg.2019.103145] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/02/2019] [Accepted: 07/20/2019] [Indexed: 12/20/2022]
Abstract
The root bark of Ulmus davidiana var. japonica (Ulmaceae), commonly known as yugeunpi, has been used as a traditional Korean medicine for the treatment of gastroenteric and inflammatory disorders. As part of continuing projects to discover bioactive natural products from traditional medicinal plants with pharmacological potential, phytochemical investigation of the root bark of this plant was carried out. This led to the successful isolation of a new chromane derivative (1) and 22 known compounds: catechin derivatives (2-5), megastigmane glycoside (6), dihydrochalcone glycosides (7 and 8), flavanone glycosides (9 and 10), coumarins (11 and 12), lignan derivatives (13-17), and phenolic compounds (18-23). The structure of the new compound (1) was determined with 1D and 2D NMR spectroscopy and HR-ESIMS, and its absolute configurations were achieved by chemical reactions and the gauge-including atomic orbital (GIAO) NMR chemical shifts calculations. All the isolated compounds were evaluated for their potential biological activities including neuro-protective, anti-neuroinflammatory, and anti-Helicobacter pylori activities. Among the isolates, compounds 1, 8, and 20 displayed stronger potency by causing a greater increase in the production and the activity of nerve growth factor (NGF) in C6 glioma cells (147.04 ± 4.87, 206.27 ± 6.70, and 143.70 ± 0.88%, respectively), whereas compounds 11, 14, and 19 inhibited nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated murine microglial cells (IC50 of 18.72, 12.31, and, 21.40 µM, respectively). In addition, compounds 1, 11, 18, and 20 showed anti-H. pylori activity with MIC values of 25 or 50 µM against two strains of H. pylori 51 and 43504. These findings provide scientific evidence that supports the traditional usage of U. davidiana var. japonica root bark in the treatment of gastroenteric and inflammatory disorders.
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Affiliation(s)
- Hae Min So
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Zarha Khan
- College of Pharmacy, Gachon Institute of Pharmaceutical Science, Gachon University, 191 Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Lalita Subedi
- College of Pharmacy, Gachon Institute of Pharmaceutical Science, Gachon University, 191 Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Il Kyun Lee
- Research Center, Natural Medicine Research Team, Richwood Trading Company, LTD, Seoul 08826, Republic of Korea
| | - Woo Sung Park
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Sang J Chung
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Mi-Jeong Ahn
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Sun Yeou Kim
- College of Pharmacy, Gachon Institute of Pharmaceutical Science, Gachon University, 191 Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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23
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Gu X, Chen J, Zhang Y, Guan M, Li X, Zhou Q, Song Q, Qiu J. Synthesis and assessment of phenylacrylamide derivatives as potential anti-oxidant and anti-inflammatory agents. Eur J Med Chem 2019; 180:62-71. [PMID: 31301564 DOI: 10.1016/j.ejmech.2019.07.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 07/04/2019] [Accepted: 07/06/2019] [Indexed: 12/11/2022]
Abstract
Oxidative stress and inflammation are major causes of numerous life-threatening human diseases. In the present study, we synthesized a series of phenylacrylamide derivatives as novel anti-oxidant and anti-inflammatory agents. Biological evaluation showed that compound 6a could more potently protect HBZY-1 mesangial cells from H2O2-caused oxidative stress than positive controls resveratrol and sulforaphane by dose- and time-dependently impairing the ROS accumulation. Preliminary anti-oxidant mechanism studies indicated that compound 6a could activate Nrf2 and increase the protein and mRNA expression of downstream anti-oxidant enzymes, ie. NQO-1, HO-1, GCLM and GCLC. Notably, 6a could inhibit the production of NO and the activity of NF-κB in LPS-stimulated HBZY-1 mesangial cells, indicating its potential anti-inflammatory activity. Interestingly, both effects could be significantly attenuated by Nrf2 inhibitor TRG, HO-1 inhibitor ZnPP or GCL inhibitor BSO at non-toxic concentrations, confirming that the anti-oxidant and anti-inflammatory activity of 6a is related to the activation of Nrf2 signaling pathway. These results, together with the relatively safety profile, indicated that compound 6a could be a promising lead to develop novel anti-oxidant and anti-inflammatory agents, thus preventing diseases induced by oxidative stress and inflammation.
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Affiliation(s)
- Xiaoke Gu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China.
| | - Jing Chen
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Yinpeng Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Mingyu Guan
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Xin Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Qingqing Zhou
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Qinghua Song
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Jingying Qiu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China.
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Hanthanong S, Choodej S, Teerawatananond T, Pudhom K. Rearranged Clerodane Diterpenoids from the Stems of Tinospora baenzigeri. JOURNAL OF NATURAL PRODUCTS 2019; 82:1405-1411. [PMID: 31135149 DOI: 10.1021/acs.jnatprod.8b00483] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Four new rearranged clerodane-type diterpenoids (1-4), a new glucoside (5), and six known compounds (6-11) were obtained from the EtOAc crude extract of Tinospora baenzigeri stem. The structures of the new compounds were elucidated by interpreting their spectroscopic data, particularly 1D and 2D NMR. Single-crystal X-ray diffraction analysis was subsequently performed to confirm the structures and relative configurations of compounds 1-4. These compounds are rare examples of rearranged clerodanes, particularly compound 4, possessing a fully oxidized tetrahydrofuranyl ring. The isolated compounds were assayed for their protective effect against N-acetyl- p-aminophenol (APAP)-induced HepG2 cell damage. Compounds 8, 9, and 11 showed hepatoprotective activity at 10 μM with 17.0, 19.2, and 39.0% inhibition, respectively, whereas rearranged clerodanes (1-3 and 5) were weakly active.
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Affiliation(s)
| | | | - Thapong Teerawatananond
- Faculty of Science and Technology , Valaya Alongkorn Rajabhat University under Royal Patronage , Pathumtani 13138 , Thailand
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25
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Xu L, Ma L, Wang W, Li L, Lu Z. Phenoloxidases are required for the pea aphid's defence against bacterial and fungal infection. INSECT MOLECULAR BIOLOGY 2019; 28:176-186. [PMID: 30182435 DOI: 10.1111/imb.12536] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The pea aphid, Acyrthosiphon pisum, has an incomplete immune system compared to those of other insect species; some conserved components and pathways in other species are missing in its genome. As a core component of the insect immune system, prophenoloxidase (PPO) genes are retained in the pea aphid. Early studies have also shown the presence of phenoloxidase activity in specific tissues or cells in the pea aphid and suggested its involvement in response to immune challenges. In this study, we knocked down the expression of PPO genes in the pea aphid using double-stranded RNA-based interference, and quantitative PCR analysis and an enzyme activity assay confirmed our success in the PPO gene knockdown. In bacterial and fungal infection experiments, we observed that the knockdown of PPO resulted in more live bacterial cells and fungal spores in the body of the aphids and higher mortality of the aphids after infection. Our study provides evidence supporting a critical role of PPO in the defence of the pea aphid.
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Affiliation(s)
- L Xu
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - L Ma
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - W Wang
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - L Li
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Z Lu
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
- Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Northwest A&F University, Yangling, Shaanxi, China
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Gu X, Jiang Y, Chen J, Zhang Y, Guan M, Li X, Zhou Q, Lu Q, Qiu J, Yin X. Synthesis and biological evaluation of bifendate derivatives bearing acrylamide moiety as novel antioxidant agents. Eur J Med Chem 2019; 162:59-69. [DOI: 10.1016/j.ejmech.2018.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 11/01/2018] [Indexed: 12/29/2022]
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27
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Wang X, Khutsishvili M, Fayvush G, Tamanyan K, Atha D, Borris RP. Phytochemical investigations of Atraphaxis spinosa L (Polygonaceae). BIOCHEM SYST ECOL 2018. [DOI: 10.1016/j.bse.2018.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Prenyl-flavonoids from Epimedium koreanum Nakai and their soluble epoxide hydrolase and tyrosinase inhibitory activities. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1975-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Kil YS, Kim SM, Kang U, Chung HY, Seo EK. Peroxynitrite-Scavenging Glycosides from the Stem Bark of Catalpa ovata. JOURNAL OF NATURAL PRODUCTS 2017; 80:2240-2251. [PMID: 28787158 DOI: 10.1021/acs.jnatprod.7b00139] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ten new glycosides, 6,10-O-di-trans-feruloyl catalpol (1), 6,6'-O-di-trans-feruloyl catalpol (2), 3,4-dihydro-6-O-di-trans-feruloyl catalpol (10), (8R,7'S,8'R)-lariciresinol 9'-O-β-d-(6-O-trans-feruloyl)glucopyranoside (17), and ovatosides A-F (18-22, 24), were isolated from the stem bark of Catalpa ovata along with 19 known compounds. All isolates, except 6 (catalposide) and 9 (6-O-veratroyl catalpol), were found to scavenge peroxynitrite (ONOO-) formed by 3-morpholinosydnonimine. In particular, 12 compounds showed potent activity, with IC50 values in the range 0.14-2.2 μM.
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Affiliation(s)
- Yun-Seo Kil
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University , Seoul 03760, Korea
| | - Seong Min Kim
- College of Pharmacy, Pusan National University , Pusan 46241, Korea
| | - Unwoo Kang
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University , Seoul 03760, Korea
| | - Hae Young Chung
- College of Pharmacy, Pusan National University , Pusan 46241, Korea
| | - Eun Kyoung Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University , Seoul 03760, Korea
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