1
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Chen H, Wang J, Sun J, Ding Q, Shen Y, Wang T, Liu C, Gao X, Chai X. Anti-inflammatory lignans from peeled stems of Syringa pinnatifolia. Fitoterapia 2025; 182:106445. [PMID: 39955012 DOI: 10.1016/j.fitote.2025.106445] [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: 12/14/2024] [Revised: 02/06/2025] [Accepted: 02/12/2025] [Indexed: 02/17/2025]
Abstract
Three new lignans namely alashanenols H1-J1 (1-3) and one dimeric lignan namely bisyringol A (4) together with 15 known analogues (5-19) were isolated from the peeled stems of Syringa pinnatifolia Hemsl. with the aid of an in vitro anti-inflammation guided fractionation. The structures were elucidated by analysis of spectroscopic data, including IR, UV, MS, and NMR, and their absolute configurations were resolved by X-ray single crystal diffraction analysis and comparison of experimental and calculated 13C NMR and ECD data. Compound 2 possesses a cage-like motif in lignan family and 4 owns a rare framework composed of one lignan and one norlignan fragments. The bioassay results showed that 4, 13, and 18 significantly inhibit the NO production in LPS-induced RAW264.7 cells with IC50 values of 5.90 ± 0.28, 53.26 ± 9.96 and 53.25 ± 6.84 μM, compared with the positive control indomethacin (IC50 33.6).
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Affiliation(s)
- Hongying Chen
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Jiatong Wang
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Jingjing Sun
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China; Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, PR China
| | - Qiuyuan Ding
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Yiru Shen
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Tao Wang
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, PR China; Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, PR China.
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2
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Yang G, Liu C, Chen P, Jiao S, Sun J, Liang Y, Cui L, Wang T, Gao X, Zhang Q, Chai X. Novel lignans from Syringa pinnatifolia and protective effect against H 2O 2-induced oxidative injury through regulating the expression of Nrf2/HO-1 in H9c2 cells. Bioorg Chem 2024; 152:107732. [PMID: 39178702 DOI: 10.1016/j.bioorg.2024.107732] [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: 06/19/2024] [Revised: 07/27/2024] [Accepted: 08/15/2024] [Indexed: 08/26/2024]
Abstract
Phytochemical analysis of the peeled stems of Syringa pinnatifolia Hemsl. led to the discovery of 13 undescribed lignans, namely helanols A and B (1 and 2) and alashanenols W-G1 (3-13), as well as four known analogues, of which helanols A and B were lignans with novel skeleton of α-β' linkage. The structures were unambiguously established by extensive spectroscopic analyses, NMR calculations, ECD calculations, and single crystal X-ray crystallography. Five lignans (1, 2, 5, 11 and 13) exhibited a moderate protective effect against H2O2-induced oxidative injuries in H9c2 cells with the protective rates of 11.3-20.6 % at the concentration of 0.3-20 μM, while the positive control quercetin showed protective rates of 58.7 % at 10 μM. Further mechanism investigation suggested that 1 and 2 exerted the protective effect by regulating the expression of Nrf2/HO-1.
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Affiliation(s)
- Guodong Yang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Panlong Chen
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Jingjing Sun
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China; Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, PR China
| | - Yana Liang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Lingwen Cui
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Tao Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Qingying Zhang
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, PR China.
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China; Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, PR China.
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3
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Liang Y, Wuken S, Chen P, Huang Z, Liu C, Wang J, Chen H, Zhang Y, Chai X. Noralashinols D-F, New Norlignans from Syringa pinnatifolia and its Anti-Inflammation in BV 2 Cells. Chem Biodivers 2024; 21:e202401567. [PMID: 39117598 DOI: 10.1002/cbdv.202401567] [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: 06/27/2024] [Revised: 08/07/2024] [Accepted: 08/08/2024] [Indexed: 08/10/2024]
Abstract
Four new norlignans, noralashinols D-F (1a/b-3), and two known analogues (4 and 5) were isolated from the peeled stems of Syringa pinnatifolia Hemsl. The structures were elucidated by analysis of spectroscopic data, such as IR, HR-ESI-MS, 1D and 2D NMR, and ECD. All compounds were evaluated for anti-inflammatory activities against NO production induced by LPS in BV2 microglia cells. Compounds 1b and 2 exhibited moderate activities with IC50 values of 32.39±9.1 and 47.83±10.44 μM, respectively, compared with positive control indomethacin (IC50=21.62 μM). It is worth to note that 1, 3, and 4 have a distinctive woody fragrance.
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Affiliation(s)
- Yana Liang
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
| | - Shana Wuken
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
| | - Panlong Chen
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
| | - Zhiqiang Huang
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, 010110, P. R. China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
| | - Jiatong Wang
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
| | - Hongying Chen
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
| | - Ye Zhang
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, 010110, P. R. China
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102448, P. R. China
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, 010110, P. R. China
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4
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Sun J, Chen P, Liu C, Zhang Z, Kang L, Ren G, Gao X, Cao L, Chai X. Minor Humulane and Eremophilane Sesquiterpenoids from Syringa pinnatifolia and Their Protective Effect Against Oxidative Injuries in H9c2 Cells. Chem Biodivers 2024; 21:e202401641. [PMID: 39187940 DOI: 10.1002/cbdv.202401641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 08/04/2024] [Accepted: 08/14/2024] [Indexed: 08/28/2024]
Abstract
As a part of systematic research, an ongoing phytochemical investigation of the sesquiterpenoid-containing fraction led to the isolation of five new sesquiterpenoids from the peeled stems of Syringa pinnatifolia, including two pairs of enantiomeric humulane-type (±)-alashanoids A1 and B1 (1 and 2) and one eremophilane-type alashanoid C1 (3). These structures were elucidated by the analysis of extensive spectroscopic data, including ESI-MS and 1D and 2D NMR, and the absolute configuration was determined by comparing its experimental and calculated electronic circular dichroism and calculated NMR. These isolates exhibited moderate in vitro cardioprotective effects against oxidative injuries in H9c2 cells.
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Affiliation(s)
- Jingjing Sun
- Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, PR China
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Panlong Chen
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Zefeng Zhang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Lulu Kang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Gang Ren
- Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, PR China
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Lan Cao
- Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, PR China
| | - Xingyun Chai
- Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, PR China
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
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5
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Sun J, Li A, Jiao S, Liu C, Zhang Z, Chen H, Liang Y, Gao X, Cao L, Bai C, Chai X. Dimeric eremophilane-type sesquiterpenoids from the peeled stems of Syringa pinnatifolia. PHYTOCHEMISTRY 2024; 221:114048. [PMID: 38447597 DOI: 10.1016/j.phytochem.2024.114048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/27/2024] [Accepted: 03/02/2024] [Indexed: 03/08/2024]
Abstract
A continued phytochemical investigation guided by 1H NMR and LC-MS data on the ethanol extract from the peeled stems of Syringa pinnatifolia Hemsl. led to the isolation of 16 undescribed dimeric eremophilane sesquiterpenoids, namely syringenes R-Z (1-9) and A1-G1 (10-16). These structures were elucidated by extensive analysis of spectroscopic data, including HRESIMS, NMR, quantum-mechanics-based computational analysis of NMR chemical shifts, and single-crystal X-ray diffraction analyses, and a concise rule for determination of relative configuration of angular methyl was proposed. The results of the cardioprotective assay demonstrated that 3 exhibits a protective effect against hypoxia-induced injuries in H9c2 cells. This effect was observed at a concentration of 10 μM, with a protective rate of 28.43 ± 11.80%.
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Affiliation(s)
- Jingjing Sun
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China; Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, PR China
| | - Anni Li
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Zefeng Zhang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Hongying Chen
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Yana Liang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China
| | - Lan Cao
- Research Center for Traditional Chinese Medicine Resources and Ethnic Minority Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, PR China
| | - Changcai Bai
- College of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China.
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
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6
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Liu C, Ma X, Jiao S, Xu J, Chen H, Wuken S, Liang Y, Gao X, Chen S, Chai X. Equivalent evaluation and biological ingredients of Syringa pinnatifolia against acute myocardial ischemia in mice. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116904. [PMID: 37453624 DOI: 10.1016/j.jep.2023.116904] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/05/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The peeled roots, stems, and twigs of Syringa pinnatifolia Hemsl., known as Shan-Chen-Xiang (SCX) in Chinese, has the traditional effects such as anti-Khii, clearing heat and relieving pain. It has been clinically applied for the treatment of heart failure and mental abnormalities, and gradually replaced agarwood in Mongolian medicine. AIM OF STUDY The present study aims to evaluate whether the key subfraction C (C), a half composition in mass of total ethanol extract (T) of SCX, exerts an equivalent effect against acute myocardial ischemia (AMI) compared to fraction I (I), and what was the potential pharmacologically active constituents of SCX. MATERIALS AND METHODS Cardiac function, serum marker enzymes, and myocardial tissue pathology of infarcted mice with ligation of the anterior descending (LAD) branch of the left coronary artery were used to evaluate the anti-AMI effect of C and its equivalent potency to that of I. LCMS-IT-TOF was used to identify the main constituents in C and C-. The new and known compounds were isolated from C by a combination of mass spectrometry and bioactivity-guided fractionation methods, and structures were elucidated by extensive spectroscopic and chemical methods, including calculated 13C NMR data, calculated electronic circular dichroism, and single-crystal X-ray crystallography. The protective effect of isolates against oxidative injury induced by H2O2 in H9c2 cells was evaluated according to a previously reported protocol. RESULTS The results of cardiac function, serum marker enzymes and myocardial tissue pathology observations (fosinopril as a positive drug) suggested that C (40 mg/kg, orally administered once a day for 7 days) possessed the anti-AMI effect and was equivalent to that of I, while C- did not show the positive effect. Then, 32 lignans were isolated from C, including the majors (8R,8'R,9S)-4,4'-dihydroxy-3,3',9-trimethoxy-9,9'-epoxylignan (24) and (8R,8'R,9R)-4,4'-dihydroxy-3,3',9-trimethoxy-9,9'-epoxylignan (25), which were confirmed by HPLC and LC-MS characterization. Among them, 15 ones were previously undescribed, including a pair of enantiomers (6a/6b), and 11 ones (1, 2, 6a/6b, 8, 10, 12, 16, 17, 24, and 25) exhibited protective effect against oxidative injury to H9c2 cells at different concentrations (ranged from 0.156 to 80 μM). CONCLUSION C (40 mg/kg) exerts cardioprotective effect in mice, which was equivalent to that of I and T. Lignans, including both representative compounds (24, 25) and other undescribed molecules with low content, significantly contribute to the anti-AMI effect of SCX. However, the anti-AMI property assessment of SCX should not exclude the contribution from the representative sesquiterpenoid ZER. Hence, the exploration of the final potential substances in SCX requires further investigation.
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Affiliation(s)
- Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Xiaojing Ma
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Jixuan Xu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Hongying Chen
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Shana Wuken
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Yana Liang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
| | - Suyile Chen
- Alashan Mongolian Hospital, East Banner of Alashan, Inner Mongolia, 750306, PR China.
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR,. China.
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7
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Nan ZD, Zhu YD, Deng CF, Jiang GD, Wang ZZ, Li CL, Ma XL, Jiang ZB. Benzylisoquinoline alkaloids with their antitumor activity from the aerial parts of Corydalis impatiens (pall.) Fisch. Fitoterapia 2024; 172:105738. [PMID: 37939736 DOI: 10.1016/j.fitote.2023.105738] [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: 09/18/2023] [Revised: 10/30/2023] [Accepted: 11/05/2023] [Indexed: 11/10/2023]
Abstract
Phytochemical investigation on the aerial parts of Corydalis impatiens (pall.) Fisch (Papaveraceae) resulted in the identification of four previous undescribed benzylisoquinoline alkaloids, impatienines A-D (1-4), together with 14 known analogues (5-18). The structures of these compounds were elucidated by extensive spectroscopic analysis (IR, HR-ESIMS, 1D- and 2D-NMR) as well as ECD calculations. All the compounds obtained were investigated for their inhibitory effect on the growth of A549, H1299 and HepG2 cancer cells. Compounds 7 and 15 exhibited pronounced inhibition against the A549 cancer cells with IC50 values of 6.81 μM and 3.17 μM, while the positive control cisplatin was 1.83 μM. Compounds 1-3 showed moderate inhibitory on the H1299 cancer cells. Compounds 4, 10-12, and 16 showed signiffcant activity against HepG2 cancer cells with IC50 values range of 4.41-8.75 μM.
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Affiliation(s)
- Ze-Dong Nan
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China; Ningxia low-grade resource high value utilization and environmental chemical integration technology innovation team project, Yinchuan 750021, PR China
| | - Yi-Dong Zhu
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
| | - Chao-Fan Deng
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
| | - Guo-Dong Jiang
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
| | - Zhen-Zhen Wang
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
| | - Chong-Long Li
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
| | - Xiao-Li Ma
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China
| | - Zhi-Bo Jiang
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, and Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, PR China; Ningxia low-grade resource high value utilization and environmental chemical integration technology innovation team project, Yinchuan 750021, PR China.
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8
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Jiao S, Huang H, Wang L, Wuken S, Liu C, Kang L, Liu J, Hu Z, Tu P, Huang L, Chai X. Alashanines A-C, Three Quinone-Terpenoid Alkaloids from Syringa pinnatifolia with Cytotoxic Potential by Activation of ERK. J Org Chem 2023. [PMID: 37178146 DOI: 10.1021/acs.joc.3c00369] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Three quinone-terpenoid alkaloids, alashanines A-C (1-3), possessing an unprecedented 6/6/6 tricyclic conjugated backbone and quinone-quinoline-fused characteristic, were isolated from the peeled stems of Syringa pinnatifolia. Their structures were elucidated by analysis of extensive spectroscopic data and quantum chemical calculations. A hypothesis of biosynthesis pathways for 1-3 was proposed on the basis of the potential precursor iridoid and benzoquinone. Compound 1 exhibited antibacterial activities against Bacillus subtilis and cytotoxicity against HepG2 and MCF-7 human cancer cell lines. The results of the cytotoxic mechanism revealed that compound 1 induced apoptosis of HepG2 cells through activation of ERK.
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Affiliation(s)
- Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Huiming Huang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Lifang Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Shana Wuken
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Lulu Kang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Juan Liu
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P. R. China
| | - Zhongdong Hu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Pengfei Tu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
| | - Luqi Huang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, P. R. China
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, P. R. China
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9
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Jiao S, Gao X, Li J, Zhang R, Wuken S, Liu C, Chen S, Tu P, Huang L, Chai X. Diverse lignans with protective effect against hypoxia/oxidative injuries to H9c2 cells from Syringa pinnatifolia Hemsl. PHYTOCHEMISTRY 2023; 206:113540. [PMID: 36464101 DOI: 10.1016/j.phytochem.2022.113540] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/25/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
A bioactivity-guided fractionation on the phenolic fractions from the peeled stems of Syringa pinnatifolia Hemsl., one of representative Mongolian folk medicine in China, led to the isolation and structural determination of 11 undescribed lignans and 12 known ones. These lignans cover diverse types, among them syringanones A and B represent an unprecedented carbon skeleton (proposed syringanane) and alashanenol A possesses a rare bicyclo [3.3.1]nonadienemethanol core. Their structures were established by extensive spectroscopic data analysis, X-ray diffraction, and quantum chemical calculations. All isolates were evaluated for their cardioprotective activities on H9c2 cardiomyocytes in vitro. The results showed that five lignans exhibited the protective effects against hypoxia-induced injury at the concentrations of 1.2-40 μM and six lignans exhibited anti-oxidative stress injury at 10-40 μM. These findings account to some extend for the traditional therapeutic effects of S. pinnatifolia for the treatment of ischemic heart diseases in clinic.
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Affiliation(s)
- Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Junjun Li
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Ruifei Zhang
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Shana Wuken
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Changxin Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Suyile Chen
- Alashan Mongolian Hospital, East Banner of Alashan, Inner Mongolia 750306, PR China
| | - Pengfei Tu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China
| | - Luqi Huang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, PR China.
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, PR China.
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10
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Wuken S, Li J, Gao X, Jiao S, Ma X, Chen S, Tu P, Huang L, Chai X. Zerumbone, a major sesquiterpene from Syringa pinnatifolia Hemsl., exerts the sedative effect by regulating GABAergic nervous system. JOURNAL OF ETHNOPHARMACOLOGY 2023; 301:115813. [PMID: 36220513 DOI: 10.1016/j.jep.2022.115813] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Zerumbone (ZER) is a humulane sesquiterpenoid isolated from Syringa pinnatifolia Hemsl. (SP), its content accounts for 64.7% of volatile oil and 0.86% of total ethanol extract (TEE), representing one of characteristic ingredient of SP. As a representative Mongolian medicine with anti-"Khii", anti-asthma, and clearing-heat effects, SP has been used for the treatment of cardiovascular diseases, upset, insomnia, and other symptoms. AIM OF STUDY Previous results showed that TEE has sedative effect, but the pharmacological substances and its sedative mechanism remains unclear. This study aims to determine whether ZER, as one of major and characteristic sesquiterpenoids of SP, contributes to the sedative effect of SP and its underlying mechanism. MATERIALS AND METHODS Locomotor activity and threshold dose of pentobarbital sodium sleep experiments were used to evaluate the sedative effects in mice. ELISA assay was used to examine the level of GABA/Glu ratio in rats hippocampus, cortex and hypothalamus tissue. The binding ability of ZER with glutamic acid decarboxylase 67 (GAD67) and Gephyrin protein were predicted by molecular docking. Western blot and Immunohistochemistry assay were used to determine the expression of GABAergic nerve system related proteins (GAD67, Gephyrin) in rat's hypothalamus. ZER was co-administrated with flumazenil and bicuculline (GABAA antagonist) to determine whether it acts on GABAA receptor. Furthermore, MQAE assay was used to test the effect of ZER on the chloride ion concentration in cerebellar granule cells. RESULTS Current data demonstrated that ZER dose-dependently (5-20 mg/kg) reduces the locomotor activity and sleep latency of mice, and extend sleeping time of mice. The results of ELISA showed that ZER increases the level of GABA/Glu in rats brain tissue, in particular in hypothalamus. Molecular docking results revealed that ZER has a strong affinity to GAD67 and Gephyrin protein. The Western blot and Immunohistochemistry data indicated that ZER up-regulates the expression of GAD67 and Gephyrin protein in rat's hypothalamus. Antagonism test results demonstrated that flumazenil and bicuculline reverse the effect of ZER on threshold dose of pentobarbital sodium sleep experiments. In addition, ZER also could dose-dependently (5-20 μM) increase the chloride ion concentration in cerebellar granule cell, suggesting that ZER induces the opening of chloride channel, exerts central inhibitory effect. CONCLUSION ZER has a significant sedative effect in mice and rat, and the effect is associated with GABAergic nervous system. The present results suggest that ZER, as one of the major bioactive ingredients of SP, contributes to the sedative effect and provide substantial evidence for its traditional use of anti-"Khii" in clinic of Syringa pinnatifolia.
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Affiliation(s)
- Shana Wuken
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
| | - Junjun Li
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
| | - Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
| | - Xiaojing Ma
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
| | - Suyile Chen
- Alashan Mongolian Hospital, East Banner of Alashan, Inner Mongolia, 750306, PR China.
| | - Pengfei Tu
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
| | - Luqi Huang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China.
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, PR China.
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11
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Liu C, Chen P, Jiao S, Chen H, Xu J, Gao X, Chai X. (+)/(−)-Alexanoid A, a pair of enantiomeric sesquiterpenoid with a novel 5/6/6 tricyclic backbone from the stem of Syringa pinnatifolia. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Liu YF, Yu SS. Survey of natural products reported by Asian research groups in 2021. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 24:905-924. [PMID: 36111695 DOI: 10.1080/10286020.2022.2117169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/21/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The new natural products reported in 2021 in peer-reviewed articles in journals with good reputations were reviewed and analyzed. The advances made by Asian research groups in the field of natural products chemistry in 2021 were summarized. Compounds with unique structural features and/or promising bioactivities originating from Asian natural sources were discussed based on their structural classification.
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Affiliation(s)
- Yan-Fei Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Shi-Shan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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13
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Syringenes A–L: Bioactive dimeric eremophilane sesquiterpenoids from Syringa pinnatifolia. Bioorg Chem 2022; 125:105879. [DOI: 10.1016/j.bioorg.2022.105879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/20/2022] [Accepted: 05/14/2022] [Indexed: 11/20/2022]
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Li A, Ma X, Zhang R, Jiao S, Li W, Gao X, Xu J, Tu P, Chai X. Syringenes M - Q, Eremophilane Sesquiterpenoid Dimers from the Peeled Stems of Syringa pinnatifolia. Chem Biodivers 2022; 19:e202200245. [PMID: 35652443 DOI: 10.1002/cbdv.202200245] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/30/2022] [Indexed: 11/10/2022]
Abstract
As a part of systematic studies on Syringa pinnatifolia, a continued phytochemical investigation guided by 1 H-NMR and LC/MS data on the ethanol extract afforded five new dimeric eremophilane sesquiterpenoids, namely syringenes M-Q (1-5). These structures were elucidated by extensive analysis of spectroscopic data, including infrared (IR), high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), nuclear magnetic resonance (NMR), quantum-mechanics-based computational analysis of NMR chemical shifts, and single-crystal X-ray diffraction. Compounds 4 and 5 showed inhibitory activities against NO production induced by lipopolysaccharide in RAW264.7 macrophage cells, with IC50 values of 5.1 and 9.3 μM, compared to positive control indomethacin (IC50 33.6 μM). These dimeric eremophilane sesquiterpenoids may be potential markers for discriminating this species from the genus Syringa and the Oleaceae family.
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Affiliation(s)
- Anni Li
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Xiaojing Ma
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Ruifei Zhang
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Shungang Jiao
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Weifeng Li
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Xiaoli Gao
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Jixuan Xu
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Pengfei Tu
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
| | - Xingyun Chai
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 102488, P. R. China
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15
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Li J, Ge F, Wuken S, Jiao S, Chen P, Huang M, Gao X, Liu J, Tu P, Chai X, Huang L. Zerumbone, a humulane sesquiterpene from Syringa pinnatifolia, attenuates cardiac fibrosis by inhibiting of the TGF-β1/Smad signaling pathway after myocardial infarction in mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 100:154078. [PMID: 35405613 DOI: 10.1016/j.phymed.2022.154078] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 03/11/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Zerumbone (ZER) is a humulane sesquiterpene isolated from Syringa pinnatifolia Hemsl., a representative Mongolian herbal medicine that is used to treat cardiovascular diseases. Cardiac fibrosis is a common pathological process in cardiovascular disease that results from the excessive accumulation of extracellular matrix (ECM), and the transforming growth factor (TGF)-β/Smad pathway is a canonical signaling pathway that directly induces expressions of ECM-related genes. Currently, the cardioprotective effect and underlying mechanisms of ZER on the inhibition of cardiac fibrosis are not well known. PURPOSE To explore the cardioprotective properties and pharmacological mechanism of ZER against cardiac fibrosis via the TGF-β1/Smad signaling pathway. METHODS Myocardial infarction (MI) model was induced by ligation of the left anterior descending coronary artery in ICR mice. The mice were randomly divided into six groups: sham, model, low-dose ZER (ZER-L), medium-dose ZER (ZER-M), high-dose ZER (ZER-H) and fosinopril. Mice in each group were intragastrically administered treatments for 21 days, and cardiac function was evaluated by 2D echocardiography. The pathological structure of the heart was examined by hematoxylin and eosin (HE) and Masson staining. Content of collagen I and collagen III were assessed by immunofluorescence methods. The inhibitory effect of ZER on TGF-β1 protein expression was predicted by molecular docking technology. Reverse transcriptase polymerase chain reaction (RT-PCR) and western blotting were used to measure the levels of genes and proteins expressed in the TGF-β1/Smad signaling pathway and MMPs. TGF-β1-treated cardiac fibroblasts (CFs) of neonatal SD rats were adopted for in vitro studies. RESULTS Cardiac ejection fraction (EF) and fractional shortening (FS) in the model group were markedly decreased compared with those in the sham group, indicating that the MI model was successfully established. ZER and fosinopril elevated EF and FS values, suggesting cardioprotective effects. Pathological staining and immunofluorescence analysis showed that the content of collagen I and collagen III increased in the cardiac tissue of mice in model group, while ZER treatment obviously reduced collagen levels. The molecular docking simulations predicted the hydrophobic interactions between ZER and TGF-β1. In addition, the expression of TGF-β1, p-Smad2/3 and MMPs in the ZER treatment group was significantly decreased compared with the model group. In vitro studies further confirmed that α-smooth muscle actin (α-SMA) and p-Smad2/3 increased markedly in cardiac fibroblasts after incubation with TGF-β1, and treatment with ZER suppressed the expression of α-SMA and TGF-β1 downstream proteins in cardiac fibroblasts. CONCLUSION ZER rescues cardiac function by attenuating cardiac fibrosis, and the antifibrotic effect may be mediated by blocking the TGF-β1/Smad pathway.
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Affiliation(s)
- Junjun Li
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Fuxing Ge
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Shana Wuken
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Shungang Jiao
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Panlong Chen
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Meiwen Huang
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Xiaoli Gao
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Juan Liu
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Pengfei Tu
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
| | - Xingyun Chai
- Modern Research Center for Traditional Chinese Medicine, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
| | - Luqi Huang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
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16
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Tai B, Bai L, Yu M, Liu J, Zheng H, Huang L. Eremophilane and Cadinene Sesquiterpenes from Syringa oblata and Their Protective Effects against Hypoxia-Induced Injury on H9c2 Cells. Chem Biodivers 2022; 19:e202200154. [PMID: 35417623 DOI: 10.1002/cbdv.202200154] [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: 02/21/2022] [Accepted: 04/11/2022] [Indexed: 11/06/2022]
Abstract
Seven sesquiterpenes including four eremophilanes (1-4) and three cadinenes (5-7), were isolated from the heartwood of Syringa oblata Lindl. Among them, three new eremophilane-type sesquiterpenes were identified and named oblatanoids A-C (1-3), respectively. Their structures were established by extensive analyses of spectroscopic methods, and their absolute configurations were determined by electronic circular dichroism (ECD) calculations. All these new compounds were evaluated for protective effects against hypoxia-induced injury on H9c2 cells, and 1-3 exhibited significantly protective activities toward H9c2 cells in vitro.
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Affiliation(s)
- Badalahu Tai
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China.,Mongolian Medical College, Inner Mongolia Minzu University, Tongliao, 028000, China
| | - Laxinamujila Bai
- Mongolian Medical College, Inner Mongolia Minzu University, Tongliao, 028000, China
| | - Muyao Yu
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Juan Liu
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Han Zheng
- National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Luqi Huang
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, 130117, China.,National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China
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17
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Su G, Jiao S, Zhang R, Xu J, Liu C, Liu J, Tu P, Huang L, Chai X. A pair of enantiomeric dimers with an unprecedented skeleton from stem barks of Syringa pinnatifolia. Fitoterapia 2022; 158:105173. [DOI: 10.1016/j.fitote.2022.105173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/06/2022] [Accepted: 03/08/2022] [Indexed: 11/28/2022]
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18
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Liu C, Jiao S, Li A, Xu J, Zhou X, Chen S, Tu P, Huang L, Chai X. Alashanoids O-S, Seco-humulane and Eremophilane Sesquiterpenoids from Syringa pinnatifolia. Chem Biodivers 2021; 19:e202100917. [PMID: 34927799 DOI: 10.1002/cbdv.202100917] [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: 11/14/2021] [Accepted: 12/20/2021] [Indexed: 11/12/2022]
Abstract
Five new sesquiterpenoids, alashanoids O-S ( 1 - 5 ), along with three known analogues ( 6 - 8 ) were isolated from the peeled stems of Syringa pinnatifolia . Their structures were elucidated by analysis of extensive spectroscopic data including ESI-MS, 1D, 2D NMR. The absolute configurations were determined by comparing its experimental and calculated electronic circular dichroism, calculated OR, calculated NMR, and single crystal X-ray diffraction data analysis. Compounds 1 and 2 belong to the seco-humulane type and possess a rare 13-membered oxygen heterocycle framework, and 3 - 5 belong to eremophilane-type. Compounds 1 , 2 , and 5 showed inhibition effects against NO production in LPS-induced RAW264.7 macrophage cells with its IC 50 values of 11.86 ± 2.34, 72.08 ± 7.72, and 69.22 ± 15.29 μM, respectively, compared with the positive control indomethacin (IC 50 = 31.52 μM).
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Affiliation(s)
- Changxin Liu
- Beijing University of Chinese Medicine, Modern research center for traditional chinese medicine, No.l 11, Beisanhuan Donglu, Beijing, CHINA
| | - Shungang Jiao
- Beijing University of Chinese Medicine, Modern research center for traditional chinese medicine, No.l 11, Beisanhuan Donglu, Beijing, CHINA
| | - Anni Li
- Beijing University of Chinese Medicine, Modern research center for traditional chinese medicine, No.l 11, Beisanhuan Donglu, Beijing, CHINA
| | - Jixuan Xu
- Beijing University of Chinese Medicine, Modern research center for traditional chinese medicine, No.l 11, Beisanhuan Donglu, Beijing, CHINA
| | - Xiaochun Zhou
- Beijing University of Chinese Medicine, Modern research center for traditional chinese medicine, No.l 11, Beisanhuan Donglu, Beijing, CHINA
| | - Suyile Chen
- Alashan Mongolian Hospital, Alashan mongolian hospital, 21 erut West Road, Alxa Left Banner, Alxa League, Inner Mongolia, CHINA
| | - Pengfei Tu
- Beijing University of Chinese Medicine, Modern research center for traditional chinese medicine, No.l 11, Beisanhuan Donglu, Beijing, CHINA
| | - Luqi Huang
- China Academy of Chinese Medical Sciences, National resource center for chinese materia medica, 16 Dongzhimen neinan street, Dongcheng District, Beijing, Beijing, CHINA
| | - Xingyun Chai
- Beijing University of Chinese Medicine, Modern research center for traditional Chinese medicine, No.l 11, Beisanhuan Donglu, 100029, Beijing, CHINA
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Hill RA, Sutherland A. Hot off the press. Nat Prod Rep 2021. [PMID: 34350932 DOI: 10.1039/d1np90030g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A personal selection of 32 recent papers is presented covering various aspects of current developments in bioorganic chemistry and novel natural products such as pyrasplorine A from Aspergillus versicolor.
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Affiliation(s)
- Robert A Hill
- School of Chemistry, Glasgow University, Glasgow, G12 8QQ, UK.
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