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Dong S, Zhang JY, Zhao JL, Li GQ, Yan BX, Lv CN, Yuan JZ, Lu JC. Three new phenols and one new lignan from Clematis terniflora var. manshurica (Rupr.) Ohwi with their anti-inflammatory activity. Fitoterapia 2024; 177:106043. [PMID: 38801893 DOI: 10.1016/j.fitote.2024.106043] [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: 04/02/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
Three undescribed phenols, mandshusica C-E (1-3) and a new lignan, mandshusica F (5), along with six known compounds (4, 6-10) were isolated from the roots and rhizomes of Clematis terniflora var. manshurica (Rupr.) Ohwi. Their structures were elucidated by extensive spectroscopic analysis as well as NMR and ECD calculations. Moreover, the possible biosynthetic pathways of compounds 1-3 were also discussed. All compounds were evaluated for their anti-inflammatory activities in LPS-induced RAW 264.7 cells. Compounds 1, 3, 4 significantly reduced the levels of NO and TNF-α, while compounds 2 and 8 significantly inhibited NO production in LPS-induced RAW264.7 cells.
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Affiliation(s)
- Sheng Dong
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jing-Yu Zhang
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jia-Long Zhao
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Guo-Qiang Li
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Bing-Xin Yan
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Chong-Ning Lv
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jiu-Zhi Yuan
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China..
| | - Jin-Cai Lu
- Department of Pharmaceutical Botany and Authentication of TCM, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China..
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Faustino C, Pinheiro L, Duarte N. Triterpenes as Potential Drug Candidates for Rheumatoid Arthritis Treatment. Life (Basel) 2023; 13:1514. [PMID: 37511889 PMCID: PMC10381804 DOI: 10.3390/life13071514] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/30/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease characterized by joint inflammation, swelling and pain. Although RA mainly affects the joints, the disease can also have systemic implications. The presence of autoantibodies, such as anti-cyclic citrullinated peptide antibodies and rheumatoid factors, is a hallmark of the disease. RA is a significant cause of disability worldwide associated with advancing age, genetic predisposition, infectious agents, obesity and smoking, among other risk factors. Currently, RA treatment depends on anti-inflammatory and disease-modifying anti-rheumatic drugs intended to reduce joint inflammation and chronic pain, preventing or slowing down joint damage and disease progression. However, these drugs are associated with severe side effects upon long-term use, including immunosuppression and development of opportunistic infections. Natural products, namely triterpenes with anti-inflammatory properties, have shown relevant anti-arthritic activity in several animal models of RA without undesirable side effects. Therefore, this review covers the recent studies (2017-2022) on triterpenes as safe and promising drug candidates for the treatment of RA. These bioactive compounds were able to produce a reduction in several RA activity indices and immunological markers. Celastrol, betulinic acid, nimbolide and some ginsenosides stand out as the most relevant drug candidates for RA treatment.
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Affiliation(s)
- Célia Faustino
- iMed.ULisboa, Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Lídia Pinheiro
- iMed.ULisboa, Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Noélia Duarte
- iMed.ULisboa, Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisbon, Portugal
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Zhang Q, Lu YY, Yang L, Tang HF. New triterpenoid saponins from the whole plants of Clematis heracleifolia. Fitoterapia 2022; 159:105179. [PMID: 35337886 DOI: 10.1016/j.fitote.2022.105179] [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: 12/19/2021] [Revised: 02/23/2022] [Accepted: 03/15/2022] [Indexed: 11/04/2022]
Abstract
Three new triterpenoid saponins, heracleifolianosides A-C (1-3), together with seven known compounds (4-10), were isolated from the whole plants of Clematis heracleifolia. Moreover, three new secondary saponins (1a, 2a and 3a), two known secondary metabolites (5a and 7a) were obtained by alkaline hydrolysis. Their structures were elucidated by extensive spectroscopic analysis and chemical evidences. The cytotoxicity of eight native saponins and five prosapogenins against human breast tumor MDA-MB-231 and gastric carcinoma SGC-7901 cell lines were evaluated by MTT method. Remarkably, the prosapogenin monodesmosidic saponin 7a showed significant cytotoxicity against MDA-MB-231 or SGC-7901 cell lines with IC50 values in the range of 6.05-6.32 μmol/L. It is suggested that it might be a feasible way to change the inactive bisdesmosic triterpenoid saponins to active monodesmosic saponins by a simple procedure of alkaline hydrolysis.
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Affiliation(s)
- Qian Zhang
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, The Air Force Medical University, Xi'an, PR China
| | - Yun-Yang Lu
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, The Air Force Medical University, Xi'an, PR China
| | - Liu Yang
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, The Air Force Medical University, Xi'an, PR China
| | - Hai-Feng Tang
- Department of Chinese Materia Medica and Natural Medicines, School of Pharmacy, The Air Force Medical University, Xi'an, PR China.
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Tu P, Pan Y, Wu C, Yang G, Zhou X, Sun J, Wang L, Liu M, Wang Z, Liang Z, Guo Y, Ma Y. Cartilage Repair Using Clematis Triterpenoid Saponin Delivery Microcarrier, Cultured in a Microgravity Bioreactor Prior to Application in Rabbit Model. ACS Biomater Sci Eng 2022; 8:753-764. [PMID: 35084832 DOI: 10.1021/acsbiomaterials.1c01101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cartilage tissue engineering provides a promising method for the repair of articular cartilage defects, requiring appropriate biological scaffolds and necessary growth factors to enhance the efficiency of cartilage regeneration. Here, a silk fibroin (SF) microcarrier and a clematis triterpenoid saponin delivery SF (CTS-SF) microcarrier were prepared by the high-voltage electrostatic differentiation and lyophilization method, and chondrocytes were carried under the simulated microgravity condition by a rotating cell culture system. SF and CTS-SF microspheres were relatively uniform in size and had a porous structure with good swelling and cytocompatibility. Further, CTS-SF microcarriers could sustainably release CTSs in the monitored 10 days. Compared with the monolayer culture, chondrocytes under the microgravity condition maintained a better chondrogenic phenotype and showed better proliferation ability after culture on microcarriers. Moreover, the sustained release of CTS from CTS-SF microcarriers upregulated transforming growth factor-β, Smad2, and Smad3 signals, contributing to promote chondrogenesis. Hence, the biophysical effects of microgravity and bioactivities of CTS-ST were used for chondrocyte expansion and phenotype maintenance in vitro. With prolonged expansion, SF- and CTS-SF-based microcarrier-cell composites were directly implanted in vivo to repair rabbit articular defects. Gross evaluations, histopathological examinations, and biochemical analysis indicated that SF- and CTS-SF-based composites exhibited cartilage-like tissue repair compared with the nontreated group. Further, CTS-SF-based composites displayed superior hyaline cartilage-like repair that integrated with the surrounding cartilage better and higher cartilage extracellular matrix content. In conclusion, these results provide an alternative preparation method for drug-delivered SF microcarrier and a culture method for maintaining the chondrogenic phenotype of seed cells based on the microgravity environment. CTS showed its bioactive function, and the application of CTS-SF microcarriers can help repair and regenerate cartilage defects.
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Affiliation(s)
- Pengcheng Tu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China.,Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Yalan Pan
- Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China.,Nursing Institute of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China
| | - Chengjie Wu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China.,Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Guanglu Yang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China.,Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Xin Zhou
- Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Jie Sun
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China.,Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Lining Wang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China.,Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Mengmin Liu
- Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China.,School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Zhifang Wang
- Zhangjiagang Affiliated Hospital of Nanjing University of Chinese Medicine, Suzhou 215600, P.R. China
| | - Zhongqing Liang
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Yang Guo
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China.,Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
| | - Yong Ma
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, P.R. China.,Laboratory of New Techniques of Restoration and Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China.,School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, P.R. China
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5
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Lin TF, Wang L, Zhang Y, Zhang JH, Zhou DY, Fang F, Liu L, Liu B, Jiang YY. Uses, chemical compositions, pharmacological activities and toxicology of Clematidis Radix et Rhizome- a Review. JOURNAL OF ETHNOPHARMACOLOGY 2021; 270:113831. [PMID: 33476714 DOI: 10.1016/j.jep.2021.113831] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/30/2020] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Clematis chinensis Osbeck (C. chinensis), Clematis hexapetala Pall (C. hexapetala) and Clematis terniflora var. mandshurica Rupr (C. mandshurica) are collectively referred to as Clematidis Radix et Rhizome (CRR) in China. CRR is widely distributed in China, which is used as a traditional Chinese medicine to treat rheumatic arthralgia, limb numbness, tendon constriction and inconvenience in flexion and extension. AIMS OF THIS REVIEW This review systematically summarized the research progress on uses, chemical components, pharmacological activities and toxicology of CRR, listed the chemical structures of main compounds for clarifying the differences in chemical compositions. Meanwhile, the review will provide a theoretical and practical basis for the further research and development of CRR. MATERIALS AND METHODS The available information on CRR was collected using published materials and electronic databases, including ancient and modern books, Chinese Pharmacopoeia, Ph.D. and M. Sc. dissertations, CNKI, SciFinder, WanFang data, PubMed, ScienceDirect and Web of Science. The starting and ending years of references is 1965-2020, the search strategy was conducted by key words such as uses, chemical components, pharmacology and toxicology of CRR. RESULTS Up to now, CRR has been used to treat various diseases/disorders, such as relieving rheumatism pain, treating cervical spondylopathy and scapulohumeral periarthritis, treating hepatic carcinoma and gastrointestinal, etc. In addition, more than 200 compounds have been isolated from the three plant species of Clematidis. Moreover, the crude extracts and isolated compounds of CRR have been reported to have a wide range of pharmacological activities, such as anti-inflammatory, anti-tumor, antimicrobial and antioxidant activities, etc. Toxicity studies have shown that CRR can cause oral burning, swelling, abdominal pain or severe diarrhea, difficulty breathing, dilated pupils, renal tissue structural changes, and severe death. CONCLUSIONS Researches in recent years mainly focused on C. chinensis and C. mandshurica, while there are a few reports on the pharmacological studies of C. hexapetala. Therefore, it is necessary to conduct further research on C. hexapetala. Meanwhile, it is important to pay attention to pursue research on the similarities and differences between the three plant species of Clematidis to find their respective advantages and make rational use of CRR. In addition, there is no report on the mechanism of toxicity research, which needs more attention.
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Affiliation(s)
- Tian-Feng Lin
- Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Lu Wang
- Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Yu Zhang
- Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Jin-Hua Zhang
- Beijing University of Chinese Medicine, Beijing, 102488, China
| | - De-Yong Zhou
- Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Fang Fang
- Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Lu Liu
- Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Bin Liu
- Beijing University of Chinese Medicine, Beijing, 102488, China.
| | - Yan-Yan Jiang
- Beijing University of Chinese Medicine, Beijing, 102488, China.
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Yang L, Liu R, Ouyang S, Zou M, Duan Y, Li L, Guan T, Zhang T, He J. Compounds DRG and DAG, Two Phenol Glycosides, Inhibit TNF-α-stimulated Inflammatory Response through Blocking NF-kB/AKT/JNK Signaling Pathways in MH7A Cells. Inflammation 2021; 44:1762-1770. [PMID: 33768402 DOI: 10.1007/s10753-021-01452-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/09/2021] [Accepted: 03/15/2021] [Indexed: 02/07/2023]
Abstract
Fourteen constituents were recently isolated from the roots of Dendropanax dentiger with cyclooxygenase-2 (COX-2) inhibitory effects. However, the effect of 14 constituents on rheumatoid arthritis (RA) and their action mechanism remain unclear. The study aimed to explore the anti-RA effect and potential mechanism of these constituents in tumor necrosis factor α (TNF-α)-stimulated human RA fibroblast-like synoviocytes (MH7A cells). The cell viability, nitric oxide (NO) production, inflammatory cytokine levels, and protein expressions were measured by cell counting kit-8 (CCK-8), Griess reagent, ELISA, and Western blot assays, respectively. Results showed that 14 constituents (40 μM) have no cytotoxicity for MH7A cells. Among them, two phenols including 3,4-dimethoxyphenyl-1-O-α-L-rhamnopyranosyl-(1→6)-O-β-D-glucopyranoside (DRG) and 3,4-dimethoxyphenol-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (DAG) were shown to significantly inhibit the NO production with IC50 values of 5.25±0.34 and 5.35±0.31 μM, respectively. They also remarkably decreased the release of interleukin (IL)-2, 6, 8, and interferon (IFN)-γ, as well as prominently reduced the phosphorylation protein levels of p65, IkBα, AKT, and JNK at a concentration of 10 μM. Taken together, DRG and DAG could inhibit TNF-α-induced inflammatory response through blocking NF-kB/AKT/JNK signaling pathways in MH7A cells, thus could be promising against RA and other inflammation-related agents.
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Affiliation(s)
- Li Yang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Ronghua Liu
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Sheng Ouyang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Meng Zou
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Yelin Duan
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Longmei Li
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Tao Guan
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Ting Zhang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Junwei He
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, People's Republic of China.
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Cai M, Ni WJ, Han L, Chen WD, Peng DY. Research Progress of Therapeutic Enzymes and Their Derivatives: Based on Herbal Medicinal Products in Rheumatoid Arthritis. Front Pharmacol 2021; 12:626342. [PMID: 33796022 PMCID: PMC8008143 DOI: 10.3389/fphar.2021.626342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/07/2021] [Indexed: 12/19/2022] Open
Abstract
Rheumatoid arthritis (RA) acts as one of the most common, agnogenic and chronic inflammatory-autoimmune disorder which is characterized by persistent synovitis, cartilage destruction, and joint deformities, leads to a wide range of disabilities, and increased mortality, thus imposing enormous burdens. Several drugs with anti-inflammatory and immunomodulatory properties such as celecoxib, diclofenac and methotrexate are being selected as conventional drugs in the allopathic system of medicine for the treatment of RA in clinic. However, there are some serious side effects more or less when using these drugs because of their short poor bioavailability and biological half-life for a long time. These shortcomings greatly promote the exploration and application of new low- or no-toxicity drugs for treating the RA. Meanwhile, a growing number of studies demonstrate that several herbs present certain anti-inflammatory and anti-arthritic activities through different enzymes and their derivatives, which indicate that they are promising therapeutic strategies when targeting these mediators based on herbal medicinal products in RA research. This review article summarizes the roles of the main enzymes and their derivatives during the pathogenesis of RA, and clearly clarifies the explicit and potential targeted actions of herbal medicinal products that have anti-RA activity. Our review provides timely and critical reference for the scientific rationale use of herbal medicinal products, with the increasing basic research and clinical application of herbal medicinal products by patients with RA.
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Affiliation(s)
- Ming Cai
- Department of Pharmacy, The Second Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China.,Anhui University of Chinese Medicine, Hefei, China.,Key Laboratory of Chinese Medicinal Formula Research, Anhui University of Chinese Medicine, Hefei, China
| | - Wei-Jian Ni
- School of Pharmacy, Anhui Medical University, The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China.,Department of Pharmacy, Anhui Provincial Hospital, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China
| | - Lan Han
- Anhui University of Chinese Medicine, Hefei, China.,Key Laboratory of Chinese Medicinal Formula Research, Anhui University of Chinese Medicine, Hefei, China
| | - Wei-Dong Chen
- Anhui University of Chinese Medicine, Hefei, China.,Key Laboratory of Chinese Medicinal Formula Research, Anhui University of Chinese Medicine, Hefei, China
| | - Dai-Yin Peng
- Anhui University of Chinese Medicine, Hefei, China.,Key Laboratory of Chinese Medicinal Formula Research, Anhui University of Chinese Medicine, Hefei, China
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Yang L, Liu R, Fang Y, He J. Anti-inflammatory effect of phenylpropanoids from Dendropanax dentiger in TNF-α-induced MH7A cells via inhibition of NF-κB, Akt and JNK signaling pathways. Int Immunopharmacol 2021; 94:107463. [PMID: 33618295 DOI: 10.1016/j.intimp.2021.107463] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 01/25/2021] [Accepted: 02/01/2021] [Indexed: 02/07/2023]
Abstract
The root of Dendropanax dentiger (Harms) Merr. has been used for centuries as an empirical treatment for rheumatoid arthritis (RA) in China without scientific validation. In our recent study, nineteen phenylpropanoids (1-19) with cyclooxygenase-2 inhibitory activities from the ethanol extract of D. dentiger roots, indicated to have a potential anti-RA effect. This study, evaluated the anti-RA effect of 19 phenylpropanoids on tumor necrosis factor (TNF)-α induced inflammation in MH7A cells and clarified their underlying mechanisms. As a result, 16 compounds remarkably suppressed nitric oxide (NO) production at a concentration of 40 μM in TNF-α-induced MH7A cells. Among them, pinoresinol (12) and dendrocoumarin A (1) were the most effective substances, which showed significant inhibitory effect on NO production, with IC50 values of 6.25 ± 0.42 and 7.87 ± 0.67 μM, respectively. Furthermore, pinoresinol and dendrocoumarin A remarkably decreased the levels of interleukin (IL)-2, 6, 8, and interferon-gamma (IFN-γ), as well as prominently reduced the phosphorylation protein levels of nuclear factor kappa B (NF-κB) p65, I-kappa-B-alpha (IkBα), protein kinase B (Akt), and c-Jun N-terminal kinase (JNK) by Western blot analysis. Taken together, our findings suggest that pinoresinol and dendrocoumarin A may offer new and safe anti-RA candidates by inhibiting NF-kB, Akt and JNK signaling pathways.
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Affiliation(s)
- Li Yang
- Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Ronghua Liu
- Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Yiwei Fang
- First Affilated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Junwei He
- Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China.
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9
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Diao Y. Clematichinenoside AR Alleviates Foam Cell Formation and the Inflammatory Response in Ox-LDL-Induced RAW264.7 Cells by Activating Autophagy. Inflammation 2020; 44:758-768. [PMID: 33151398 DOI: 10.1007/s10753-020-01375-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 10/21/2020] [Accepted: 10/25/2020] [Indexed: 12/13/2022]
Abstract
Foam cell formation and inflammation in macrophages contribute to the development of atherosclerosis (AS). Clematichinenoside AR (AR) is a major active ingredient extracted from the traditional Chinese herb Clematis chinensis and has potent pharmacological effects on various diseases, including AS. However, little is known about the exact role and mechanism of AR in AS. RAW264.7 macrophages were exposed to oxidized low-density lipoprotein (ox-LDL) to induce AS in vitro. Cell viability was assessed by the CCK-8 assay. Foam cell formation was detected by Oil Red staining. Cholesterol levels were determined by corresponding commercial kits. The expression of inflammatory cytokines was detected by ELISA. Western blot and immunofluorescence assays were employed to detect the expression of corresponding genes. The results indicated that AR treatment inhibited the formation of foam cells and cholesterol accumulation but promoted cholesterol efflux by upregulating ABCA1/ABCG1 in ox-LDL-induced RAW264.7 macrophages. In addition, AR decreased the production of inflammatory cytokines by blunting the activation of the NLRP3 inflammasome and inducing autophagy. However, these effects of AR were weakened by the autophagy inhibitor bafilomycin A1 but were similar to those produced by the autophagy activator rapamycin. Collectively, our study provides novel insights into the beneficial effects of AR on promoting cholesterol efflux as well as inhibiting foam cell formation and inflammation by regulating autophagy, thus identifying AR as a promising therapeutic agent for the treatment of AS.
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Affiliation(s)
- Yajing Diao
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan, 250014, Shandong Province, China.
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