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Wang M, Chen H, Yan L, Chen J, Gan L, Shen Z, Xiong J, Hu J, Li J. Solanapyrone analogues from endophytic Nigrospora sphaerica MZW-A associated with the endangered conifer Pinus wangii. Fitoterapia 2024; 179:106275. [PMID: 39454888 DOI: 10.1016/j.fitote.2024.106275] [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: 07/15/2024] [Revised: 10/21/2024] [Accepted: 10/22/2024] [Indexed: 10/28/2024]
Abstract
Eight previously undescribed solanapyrone analogues, sphasolanapyrones A-H (1-8), together with four structurally related known compounds (9-12) were obtained from the solid fermentation of Nigrospora sphaerica MZW-A, an endophytic fungus isolated from the fresh branches of the endangered conifer Pinus wangii. This study represents the first investigation on the secondary metabolites of endophytic fungus associated with this precious plant. The structures and absolute configurations of compounds 1-8 were elucidated by extensive spectroscopic analysis and electronic circular dichroism (ECD) calculations. 1 and 2 are first examples of 3,4-vic diol solanapyrone analogues, whereas 7 and 8 are rare 17-nor-solanapyrones. Among these isolates, 3, 4, 5, and 11 showed weak inhibitory against Staphylococcus aureus. In addition, compound 5 displayed weak cytotoxic effects against several tumor cell lines.
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Affiliation(s)
- Mengran Wang
- School of Pharmacy, Fudan University, Shanghai 201203, PR China; Institutes of Biomedical Sciences, Fudan University, Shanghai 201203, PR China
| | - Haowei Chen
- Ningbo Institute of Marine Medicine, Peking University, Ningbo 315800, PR China
| | - Lihong Yan
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China
| | - Jingtao Chen
- School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Lu Gan
- School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Zhichun Shen
- School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Juan Xiong
- School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Jinfeng Hu
- School of Pharmacy, Fudan University, Shanghai 201203, PR China; School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China
| | - Jiyang Li
- School of Pharmacy, Fudan University, Shanghai 201203, PR China.
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2
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Chen C, Xu R, Guo C, Li X, Zhao Y, Luo D. Lanostane triterpenoids from Ganoderma calidophilum exhibit potent anti-tumor activity by inhibiting PTP1B. Chem Biol Interact 2024; 403:111253. [PMID: 39341486 DOI: 10.1016/j.cbi.2024.111253] [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: 07/13/2024] [Revised: 09/14/2024] [Accepted: 09/22/2024] [Indexed: 10/01/2024]
Abstract
The species Ganoderma calidophilum represents a distinct variety within the genus Ganoderma and used by the indigenous Li ethnic group as a medicinal agent for the prevention and treatment of cancer. However, the precise biological activity and role of G. calidophilum in antitumor treatment remain largely unresolved. Several lanostane triterpenoids have been isolated from G. calidophilum. The enzyme activity analysis revealed that four lanostane triterpenoids exhibited PTP1B inhibition activity, with minimal inhibition towards SHP2, SHP1, PTPN5, PTPRA, STEP and TCPTP. Molecular docking analysis demonstrated that these compounds primarily bind to the substrate recognition and entry regions of PTP1B. Further analysis indicated that among them, ganoderic aldehyde A (GAA) is a selective and non-competitive PTP1B inhibitor. GAA inhibited the proliferation, colony formation and migration of C33A and MDA-MB-231 cells in a dose-dependent manner. GAA has the capacity to induce apoptosis in a cell-type-specific manner, both in a caspase-dependent and -independent manner. PTP1B siRNA significantly reduced the cytotoxic effect of GAA, while overexpression of PTP1B significantly increased cell growth after GAA treatment. These findings confirm that PTP1B is a functional target of GAA. Research into the mechanisms of action of GAA has revealed that it could inhibit the activation of AKT by inhibiting PTP1B, while simultaneously activating p38, which promotes cell death. It is possible to develop specific PTP1B inhibitors based on the lanosterol triterpene skeleton. G. calidophilum has the potential to be developed into functional foods or drugs with the aim of preventing and treating cancer.
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Affiliation(s)
- Chuan Chen
- College of Life Science, Hebei University, 071002, Baoding, Hebei, China; Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Hebei University, 071002, Baoding, Hebei, China
| | - Ruixuan Xu
- College of Life Science, Hebei University, 071002, Baoding, Hebei, China
| | - Chenxiao Guo
- College of Life Science, Hebei University, 071002, Baoding, Hebei, China
| | - Xiangke Li
- College of Life Science, Hebei University, 071002, Baoding, Hebei, China
| | - Youxing Zhao
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, 571101, Haikou, China.
| | - Duqiang Luo
- College of Life Science, Hebei University, 071002, Baoding, Hebei, China; Hebei Innovation Center for Bioengineering and Biotechnology, Hebei University, 071002, Baoding, China.
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3
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Ryu B, Ponce-Zea JE, Mai VH, Lee M, Hyun Sung S, Won Chin Y, Keun Oh W. Inhibition of protein tyrosine phosphatase 1B by serratane triterpenes from Huperzia serrata and their molecular docking study. Bioorg Med Chem Lett 2024; 111:129904. [PMID: 39069105 DOI: 10.1016/j.bmcl.2024.129904] [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: 06/03/2024] [Revised: 07/23/2024] [Accepted: 07/23/2024] [Indexed: 07/30/2024]
Abstract
During the search for protein tyrosine phosphatase 1B (PTP1B) inhibitory compounds from the natural resources, two new serratane triterpenes, 3-O-dihydro-p-coumaroyltohogenol (1) and 21-O-acetyltohogenol (2), along with four known serratane triterpenes (3-6), were isolated from the whole plant of Huperzia serrata. The chemical structures of compounds 1 and 2 were determined by NMR study, HRMS analysis, and chemical modification. All isolates were evaluated for their PTP1B inhibitory activities. Among the isolates, compounds 1, 3, 5 and 6 exhibit moderate inhibitory activities against PTP1B. Kinetic studies demonstrated that they are competitive inhibitors. Molecular docking studies support these experimental results by showing that compounds 1, 3, 5 and 6 interact with the active site of PTP1B, clarifying the structure-activity relationship. This study suggests that serratane triterpenes from H. serrata have potential as starting skeletons for anti-diabetes or anti-obesity agents.
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Affiliation(s)
- Byeol Ryu
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jorge-Eduardo Ponce-Zea
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Van-Hieu Mai
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Mina Lee
- College of Pharmacy, Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, 255 Jungangno, Suncheon 57922, Jeonnam, Republic of Korea
| | - Sang Hyun Sung
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Young Won Chin
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Won Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea.
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Ponce-Zea JE, Ryu B, Lee JY, Park EJ, Mai VH, Doan TP, Lee HJ, Oh WK. In Vitro and In Silico Analysis of PTP1B Inhibitors from Cleistocalyx operculatus Leaves and Their Effect on Glucose Uptake. Nutrients 2024; 16:2839. [PMID: 39275157 PMCID: PMC11397035 DOI: 10.3390/nu16172839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 08/20/2024] [Accepted: 08/21/2024] [Indexed: 09/16/2024] Open
Abstract
As part of our ongoing research on new anti-diabetic compounds from ethnopharmacologically consumed plants, two previously undescribed lupane-type triterpenoids (1 and 2) with dicarboxylic groups, an undescribed nor-taraxastane-type triterpenoid (3), and 14 known compounds (4-17) were isolated from the leaves of Cleistocalyx operculatus. Extensive spectroscopic analysis (IR, HRESIMS, 1D, and 2D NMR) was used for structure elucidation, while the known compounds were compared to reference data reported in the scientific literature. All the isolates (1-17) were evaluated for their inhibitory effects on the protein tyrosine phosphatase 1B (PTP1B) enzyme. Compounds 6, 9, and 17 showed strong PTP1B inhibitory activities. The mechanism of PTP1B inhibition was studied through enzyme kinetic experiments. A non-competitive mechanism of inhibition was determined using Lineweaver-Burk plots for compounds 6, 9, and 17. Additionally, Dixon plots were employed to determine the inhibition constant. Further insights were gained through a structure-activity relationship study and molecular docking analysis of isolated compounds with the PTP1B crystal structure. Moreover, all isolates (1-17) were tested for their stimulatory effects on the uptake of 2-deoxy-2-[(7-nitro-2,1,3-benzoxadiazol-4-yl) amino]-D-glucose (2-NBDG) in differentiated 3T3-L1 adipocyte cells. Compounds 6, 13, and 17 exhibited strong glucose absorption stimulation activity in a dose-dependent manner.
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Affiliation(s)
- Jorge-Eduardo Ponce-Zea
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Byeol Ryu
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ju-Yong Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun-Jin Park
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Van-Hieu Mai
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Thi-Phuong Doan
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Hee-Ju Lee
- Natural Product Informatics Research Center, Korea Institute of Science and Technology, Gangneung 25451, Republic of Korea
| | - Won-Keun Oh
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Chen HW, Wu XY, Zhao ZY, Huang ZQ, Lei XS, Yang GX, Li J, Xiong J, Hu JF. Terricoxanthones A-E, unprecedented dihydropyran-containing dimeric xanthones from the endophytic fungus Neurospora terricola HDF-Br-2 associated with the vulnerable conifer Pseudotsuga gaussenii. PHYTOCHEMISTRY 2024; 219:113963. [PMID: 38171409 DOI: 10.1016/j.phytochem.2023.113963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/27/2023] [Accepted: 12/30/2023] [Indexed: 01/05/2024]
Abstract
An investigation on the secondary metabolites from a rice culture broth of the endophytic fungus Neurospora terricola HDF-Br-2 derived from the vulnerable conifer Pseudotsuga gaussenii led to the isolation and characterization of 34 structurally diverse polyketides (1-34). Seven of them are previously undescribed, including five unprecedented dihydropyran-containing (terricoxanthones A-E, 1-5, resp.) and one rare tetrahydrofuran-containing (terricoxanthone F, 6) dimeric xanthones. The structures were elucidated by spectroscopic methods and single-crystal X-ray diffraction analyses. Terricoxanthones each were obtained as a racemic mixture. Their plausible biosynthetic relationships were briefly proposed. Compounds 6, aspergillusone A (8), and alatinone (27) displayed considerable inhibition against Candida albicans with MIC values of 8-16 μg/mL. 4-Hydroxyvertixanthone (12) and 27 exhibited significant inhibitory activities against Staphylococcus aureus, with MIC values of 4-8 μg/mL. Furthermore, compounds 8 and 27 could disrupt biofilm of S. aureus and C. albicans at 128 μg/mL. The findings not only extend the skeletons of xanthone dimers and contribute to the diversity of metabolites of endophytes associated with the endangered Chinese conifer P. gaussenii, but could further reveal the important role of protecting plant species diversity in support of chemical diversity and potential sources of new therapeutics.
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Affiliation(s)
- Hao-Wei Chen
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Xi-Ying Wu
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Ze-Yu Zhao
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Zi-Qi Huang
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Xin-Sheng Lei
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Guo-Xun Yang
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Jiyang Li
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China
| | - Juan Xiong
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China.
| | - Jin-Feng Hu
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, PR China.
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Chen HW, Jiang CX, Ma GL, Wu XY, Jiang W, Li J, Zang Y, Li J, Xiong J, Hu JF. Unprecedented spirodioxynaphthalenes from the endophytic fungus Phyllosticta ligustricola HDF-L-2 derived from the endangered conifer Pseudotsuga gaussenii. PHYTOCHEMISTRY 2023; 211:113687. [PMID: 37105348 DOI: 10.1016/j.phytochem.2023.113687] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 04/17/2023] [Accepted: 04/20/2023] [Indexed: 05/27/2023]
Abstract
Four undescribed palmarumycin-type spirodioxynaphthalenes (phyligustricins A-D) and a known biogenetic precursor (palmarumycin BG1) were isolated from a solid fermentation of Phyllosticta ligustricola HDF-L-2, an endophyte associated with the endangered Chinese conifer Pseudotsuga gaussenii. The structures were elucidated by spectroscopic methods, single-crystal X-ray diffraction analyses, and electronic circular dichroism calculations. Both phyligustricins A and B have an unprecedented spirodioxynaphthalene-derived skeleton containing an extra 4H-furo [3,2-c]pyran-4-one moiety, while phyligustricins C and D are p-hydroxy-phenethyl substituted spirodioxynaphthalenes. The plausible biosynthetic relationships of the isolates were briefly proposed. Phyligustricins C and D and palmarumycin BG1 showed considerable antibacterial activity against Staphylococcus aureus, each with an MIC value of 16 μg/mL. Palmarumycin BG1 displayed significant inhibitory effects against ACL and ACC1, with IC50 values of 1.60 and 8.00 μM, respectively.
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Affiliation(s)
- Hao-Wei Chen
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Chun-Xiao Jiang
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China; School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, PR China
| | - Guang-Lei Ma
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Xi-Ying Wu
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Wei Jiang
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Jiyang Li
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Juan Xiong
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
| | - Jin-Feng Hu
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China; School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, PR China.
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7
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Liang KY, Li H, Zhou PJ, Zhao ZY, Zang Y, Xiong J, Li J, Hu JF. Squamabietenols A-F, undescribed abietane-O-abietane dimeric diterpenoids from the ornamental conifer Juniperus squamata and their ATP-citrate lyase inhibitory activities. PHYTOCHEMISTRY 2023; 210:113663. [PMID: 36990194 DOI: 10.1016/j.phytochem.2023.113663] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/22/2023] [Accepted: 03/25/2023] [Indexed: 06/19/2023]
Abstract
Six undescribed naturally occurring abietane-O-abietane dimers (squamabietenols A-F) together with one 3,4-seco-totarane-type, a pimarane-type, and 17 related known mono-/dimeric diterpenoids were isolated and characterized from the needles and twigs of the ornamental conifer Juniperus squamata. The undescribed structures and their absolute configurations were established by extensive spectroscopic methods, GIAO NMR calculations with DP4+ probability analyses, and ECD calculations. Squamabietenols A and B showed significant inhibitory effects against ATP-citrate lyase (ACL, a novel drug target for hyperlipidemia and other metabolic disorders), with IC50 values of 8.82 and 4.49 μM, respectively. A molecular docking study corroborated the findings by highlighting the interactions between the bioactive compounds and the ACL enzyme (binding affinities: -7.1 to -9.0 kcal/mol). The unique abietane-O-abietane dimeric diterpenoids are quite rare in the vegetable kingdom, and they are of chemotaxonomic significance for the Cupressaceae family.
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Affiliation(s)
- Kai-Yuan Liang
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China; School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China
| | - Hao Li
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Peng-Jun Zhou
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China; School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China
| | - Ze-Yu Zhao
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China; School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Juan Xiong
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Jin-Feng Hu
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China; School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China.
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Zhou Q, Wang LJ, Jiang CX, Li YL, Sun ZS, Xiong J, Hu JF. Phytochemical and chemotaxonomic studies on the rare cliff plant Platycrater arguta (Hydrangeaceae). BIOCHEM SYST ECOL 2022. [DOI: 10.1016/j.bse.2022.104517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Jiang W, Zhao ZY, Tong YP, Ma GL, Zang Y, Osman EEA, Jin ZX, Xiong J, Li J, Hu JF. Phytochemical and biological studies on rare and endangered plants endemic to China. Part XXV. Structurally diverse triterpenoids and diterpenoids from two endangered Pinaceae plants endemic to the Chinese Qinling Mountains and their bioactivities. PHYTOCHEMISTRY 2022; 203:113366. [PMID: 35970438 DOI: 10.1016/j.phytochem.2022.113366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
A joint phytochemical investigation on the MeOH extracts of the twigs and needles of two endangered Pinaceae plants endemic to the Chinese Qinling Mountains, Picea neoveitchii (an evergreen spruce) and Larix potaninii var. chinensis (a deciduous larch), led to the isolation and characterization of 34 and 24 structurally diverse terpenoids, respectively. Among them, seven are previously undescribed, including a picane-type [i.e., 14(13 → 12)abeo-12αH-serratane] (neoveitchin A) and a serratane-type (neoveitchin B) triterpenoids, and an abietane-type (neoveitchin C) as well as four labdane-type (potalarxins A-D) diterpenoids. Their structures and absolute configurations were established by extensive spectroscopic methods and/or X-ray diffraction analyses. All isolates were evaluated for their inhibitory activities against the human protein tyrosine phosphatase 1B (PTP1B). Serrat-14-en-3α,21β-diol, betulinic acid, 3β-hydroxy-11-ursen-13(28)-olide, ursolic acid, and oleanolic acid were found to have considerable inhibitory effects against PTP1B, with IC50 values ranging from 1.1 to 18.1 μM. The interactions of the bioactive triterpenoids with PTP1B were thereafter performed by employing molecular docking studies. In addition, 7-oxo-dehydroabietic acid (an abietane-type diterpenoid) and mangiferonic acid (a cycloartane-type triterpenoid) inhibited acetyl-coenzyme A carboxylase 1 (ACC1), with IC50 values of 3.4 and 6.6 μM, respectively.
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Affiliation(s)
- Wei Jiang
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China; School of Life Science and Technology, Wuhan Polytechnic University, Hubei, 430023, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Ze-Yu Zhao
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Ying-Peng Tong
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China
| | - Guang-Lei Ma
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Ezzat E A Osman
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China; Department of Biochemistry, Molecular Biology and Medicinal Chemistry, Theodor Bilharz Research Institute, P. O. Box 30 Imbaba, Giza, 12411, Egypt
| | - Ze-Xin Jin
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China
| | - Juan Xiong
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, 201203, PR China
| | - Jin-Feng Hu
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Zhejiang, 318000, PR China; Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, 201203, PR China.
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Tan Y, Tian D, Li C, Chen Y, Shen Y, Li J, Tang J. Naphthoquinones and triterpenoids from Arnebia euchroma (Royle) Johnst and their hypoglycemic and lipid-lowering effects. Fitoterapia 2022; 162:105288. [PMID: 36058473 DOI: 10.1016/j.fitote.2022.105288] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/23/2022] [Accepted: 08/28/2022] [Indexed: 11/29/2022]
Abstract
A new pentacyclic triterpenoid, 2-hydroxy-1-ene-hydroxyhopanone (19), and a new benzoxepin-5-one, 3-(4-methyl-3-penten-1-yl)-6-hydroxy-9-methoxy-2H-1-benzoxepin-5-one (25), along with 26 known compounds (1-18, 20-24, 26-28), were isolated from the roots of Arnebia euchroma (Royle) Johnst. The structures of the new compounds were elucidated by extensive spectroscopic analyses. The absolute configurations of shikonofurans 9-13 were determined by quantum chemical ECD calculations and CD spectra comparison for the first time. Pharmacological study revealed that naphthoquinones 1-5, 7, and 8 had obvious cytotoxicity toward human lung adenocarcinoma A549 cell line. Meanwhile, the hypoglycemic and lipid-lowering effects of isolated compounds were assessed by checking their inhibitory effects on key enzymes regulating glucose and lipid metabolism. Results showed that compounds 1, 3, 5, 6, 8, 18, and 19 could inhibit the activity of ATP-citrate lyase (ACL); compound 7 could inhibit the activity of acetyl-CoA carboxylase (ACC1); while compounds 8 and 19 showed inhibitory effects on protein tyrosine phosphatase 1B (PTP1B). Among them, the naphthoquinone 6, steroid 18, and triterpenoid 19 showed moderate inhibitory effects on ACL and PTP1B, but didn't exhibit obvious cytotoxicity. This study demonstrated that compounds 6, 18, and 19 show great promising for the development of new agents for the treatment of metabolic diseases.
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Affiliation(s)
- Yuqi Tan
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, Jinan University, Guangzhou 510632, China
| | - Danmei Tian
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, Jinan University, Guangzhou 510632, China; Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Cong Li
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai, Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Yanhui Chen
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, Jinan University, Guangzhou 510632, China
| | - Yiran Shen
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai, Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Jia Li
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai, Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China; Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, Shandong, 266237, China
| | - Jinshan Tang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, Jinan University, Guangzhou 510632, China.
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11
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He YH, Li QX, Wu YF, Jiang CX, Zhou Q, Jin ZX, Chen WX, Mao YC, Hu JF, Xiong J. Liriogerphines A-D, a Class of Sesquiterpene-Alkaloid Hybrids from the Rare Chinese Tulip Tree Plant. J Org Chem 2022; 87:6927-6933. [PMID: 35512323 DOI: 10.1021/acs.joc.2c00318] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Liriogerphines A-D (1-4, respectively), an unprecedented class of hybrids of germacranolide-type sesquiterpenoids and aporphine-type alkaloids, were isolated from the rare medicinal plant Liriodendron chinense. Their structures were elucidated by comprehensive spectroscopic analyses combined with electronic circular dichroism calculations and X-ray crystallographic data. Biosynthetically, an aza-Michael addition reaction is proposed to be involved in the assemblies of this class of hybrids. Compound 4 exhibited cytotoxicity against leukemia cells via inducing apoptosis and inhibiting Bcl-2 expression.
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Affiliation(s)
- Yu-Hang He
- School of Pharmacy, Fudan University, Shanghai 201203, P. R. China
| | - Qi-Xiu Li
- School of Pharmacy, Fudan University, Shanghai 201203, P. R. China
| | - Yu-Fei Wu
- School of Pharmacy, Fudan University, Shanghai 201203, P. R. China
| | - Chun-Xiao Jiang
- School of Pharmacy, Fudan University, Shanghai 201203, P. R. China.,School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, P. R. China
| | - Qi Zhou
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, P. R. China
| | - Ze-Xin Jin
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, P. R. China
| | - Wen-Xue Chen
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Yi-Cheng Mao
- School of Pharmacy, Fudan University, Shanghai 201203, P. R. China
| | - Jin-Feng Hu
- School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, P. R. China
| | - Juan Xiong
- School of Pharmacy, Fudan University, Shanghai 201203, P. R. China
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