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Vahekeni N, Brillatz T, Rahmaty M, Cal M, Keller-Maerki S, Rocchetti R, Kaiser M, Sax S, Mattli K, Wolfram E, Marcourt L, Queiroz EF, Wolfender JL, Mäser P. Antiprotozoal Activity of Plants Used in the Management of Sleeping Sickness in Angola and Bioactivity-Guided Fractionation of Brasenia schreberi J.F.Gmel and Nymphaea lotus L. Active against T. b. rhodesiense. Molecules 2024; 29:1611. [PMID: 38611890 PMCID: PMC11013945 DOI: 10.3390/molecules29071611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Folk medicine is widely used in Angola, even for human African trypanosomiasis (sleeping sickness) in spite of the fact that the reference treatment is available for free. Aiming to validate herbal remedies in use, we selected nine medicinal plants and assessed their antitrypanosomal activity. A total of 122 extracts were prepared using different plant parts and solvents. A total of 15 extracts from seven different plants exhibited in vitro activity (>70% at 20 µg/mL) against Trypanosoma brucei rhodesiense bloodstream forms. The dichloromethane extract of Nymphaea lotus (leaves and leaflets) and the ethanolic extract of Brasenia schreberi (leaves) had IC50 values ≤ 10 µg/mL. These two aquatic plants are of particular interest. They are being co-applied in the form of a decoction of leaves because they are considered by local healers as male and female of the same species, the ethnotaxon "longa dia simbi". Bioassay-guided fractionation led to the identification of eight active molecules: gallic acid (IC50 0.5 µg/mL), methyl gallate (IC50 1.1 µg/mL), 2,3,4,6-tetragalloyl-glucopyranoside, ethyl gallate (IC50 0.5 µg/mL), 1,2,3,4,6-pentagalloyl-β-glucopyranoside (IC50 20 µg/mL), gossypetin-7-O-β-glucopyranoside (IC50 5.5 µg/mL), and hypolaetin-7-O-glucoside (IC50 5.7 µg/mL) in B. schreberi, and 5-[(8Z,11Z,14Z)-heptadeca-8,11,14-trienyl] resorcinol (IC50 5.3 µg/mL) not described to date in N. lotus. Five of these active constituents were detected in the traditional preparation. This work provides the first evidence for the ethnomedicinal use of these plants in the management of sleeping sickness in Angola.
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Affiliation(s)
- Nina Vahekeni
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Théo Brillatz
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Marjan Rahmaty
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Monica Cal
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Sonja Keller-Maerki
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Romina Rocchetti
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Marcel Kaiser
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Sibylle Sax
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Kevin Mattli
- Phytopharmacy & Natural Products, Institute of Chemistry and Biotechnology, Zürich University of Applied Sciences (ZHAW), 8820 Wädenswil, Switzerland (E.W.)
| | - Evelyn Wolfram
- Phytopharmacy & Natural Products, Institute of Chemistry and Biotechnology, Zürich University of Applied Sciences (ZHAW), 8820 Wädenswil, Switzerland (E.W.)
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Pascal Mäser
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
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Vijayan Y, Sandhu JS, Harikumar KB. Modulatory Role of Phytochemicals/Natural Products in Cancer Immunotherapy. Curr Med Chem 2024; 31:5165-5177. [PMID: 38549529 DOI: 10.2174/0109298673274796240116105555] [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: 07/31/2023] [Revised: 12/27/2023] [Accepted: 01/08/2024] [Indexed: 09/06/2024]
Abstract
Immunotherapy is a newly emerging and effective approach to treating cancer. However, there are many challenges associated with using checkpoint inhibitors in this treatment strategy. The component of the tumor microenvironment plays a crucial role in antitumor immune response, regulating tumor immune surveillance and immunological evasion. Natural products/phytochemicals can modulate the tumor microenvironment and function as immunomodulatory agents. In clinical settings, there is a strong need to develop synergistic combination regimens using natural products that can effectively enhance the therapeutic benefits of immune checkpoint inhibitors relative to their effectiveness as single therapies. The review discusses immunotherapy, its side effects, and a summary of evidence suggesting the use of natural products to modulate immune checkpoint pathways.
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Affiliation(s)
- Yadu Vijayan
- Cancer Research Program, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, 695014, India
- Manipal Academy of Higher Education (MAHE), Manipal, 576104, India
| | - Jaskirat Singh Sandhu
- Cancer Research Program, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, 695014, India
| | - Kuzhuvelil B Harikumar
- Cancer Research Program, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, 695014, India
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Liang H, Huang Q, Zou L, Wei P, Lu J, Zhang Y. Methyl gallate: Review of pharmacological activity. Pharmacol Res 2023; 194:106849. [PMID: 37429335 DOI: 10.1016/j.phrs.2023.106849] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/12/2023]
Abstract
Methyl gallate (MG) is a polyphenolic compound widely found in natural plants. MG has been shown to have a variety of biological functions, including anti-tumor, anti-inflammatory, anti-oxidant, neuroprotective, hepatoprotective and anti-microbial activities, and has broad research and development prospects. A total of 88 articles related to MG were searched using the PubMed, Science Direct, and Google Scholar databases, systematically investigating the pharmacological activity and molecular mechanisms of MG. There were no restrictions on the publication years, and the last search was conducted on June 5, 2023. MG can exert pharmacological effects through multiple pathways and targets, such as PI3K/Akt, ERK1/2, Caspase, AMPK/NF-κB, Wnt/β-catenin, TLR4/NF-κB, MAPK, p53, NLRP3, ROS, EMT. According to the literature, MG has the potential to be a prospective adjuvant for anticancer therapy and deserves further study.
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Affiliation(s)
- Huaguo Liang
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Qingsong Huang
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Li Zou
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Peng Wei
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Jiazheng Lu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Yongli Zhang
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China.
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Notaro A, Lauricella M, Di Liberto D, Emanuele S, Giuliano M, Attanzio A, Tesoriere L, Carlisi D, Allegra M, De Blasio A, Calvaruso G, D'Anneo A. A Deadly Liaison between Oxidative Injury and p53 Drives Methyl-Gallate-Induced Autophagy and Apoptosis in HCT116 Colon Cancer Cells. Antioxidants (Basel) 2023; 12:1292. [PMID: 37372022 DOI: 10.3390/antiox12061292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Methyl gallate (MG), which is a gallotannin widely found in plants, is a polyphenol used in traditional Chinese phytotherapy to alleviate several cancer symptoms. Our studies provided evidence that MG is capable of reducing the viability of HCT116 colon cancer cells, while it was found to be ineffective on differentiated Caco-2 cells, which is a model of polarized colon cells. In the first phase of treatment, MG promoted both early ROS generation and endoplasmic reticulum (ER) stress, sustained by elevated PERK, Grp78 and CHOP expression levels, as well as an upregulation in intracellular calcium content. Such events were accompanied by an autophagic process (16-24 h), where prolonging the time (48 h) of MG exposure led to cellular homeostasis collapse and apoptotic cell death with DNA fragmentation and p53 and γH2Ax activation. Our data demonstrated that a crucial role in the MG-induced mechanism is played by p53. Its level, which increased precociously (4 h) in MG-treated cells, was tightly intertwined with oxidative injury. Indeed, the addition of N-acetylcysteine (NAC), which is a ROS scavenger, counteracted the p53 increase, as well as the MG effect on cell viability. Moreover, MG promoted p53 accumulation into the nucleus and its inhibition by pifithrin-α (PFT-α), which is a negative modulator of p53 transcriptional activity, enhanced autophagy, increased the LC3-II level and inhibited apoptotic cell death. These findings provide new clues to the potential action of MG as a possible anti-tumor phytomolecule for colon cancer treatment.
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Affiliation(s)
- Antonietta Notaro
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Marianna Lauricella
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Diana Di Liberto
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Sonia Emanuele
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Michela Giuliano
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Alessandro Attanzio
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Luisa Tesoriere
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Daniela Carlisi
- Section of Biochemistry, Department of Biomedicine, Neurosciences and Advanced Diagnostics (BIND), University of Palermo, 90127 Palermo, Italy
| | - Mario Allegra
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Anna De Blasio
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Giuseppe Calvaruso
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
| | - Antonella D'Anneo
- Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
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Liu J, Li X, Bai H, Yang X, Mu J, Yan R, Wang S. Traditional uses, phytochemistry, pharmacology, and pharmacokinetics of the root bark of Paeonia x suffruticosa andrews: A comprehensive review. JOURNAL OF ETHNOPHARMACOLOGY 2023; 308:116279. [PMID: 36822345 DOI: 10.1016/j.jep.2023.116279] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/11/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Moutan Cortex (MC), commonly known as "Mu dan pi", refers to the dried root bark of Paeonia x suffruticosa Andrews and is broadly used as a traditional herbal medication in China, Japan, and Korea. For thousands of years, it has been utilized to treat female genital, extravasated blood, cardiovascular, and stagnant blood disorders. AIM OF THE REVIEW The purpose of this review article was to summarize information on the traditional uses, phytochemistry, pharmacology and pharmacokinetics of MC, as well as to outline the further research directions for the development of new drugs and the associations between traditional uses and pharmacological effects. MATERIALS AND METHODS The information involved in the study was gathered from a variety of electronic resources, including PubMed, Web of Science, ScienceDirect, SciFinder, China Knowledge Resource Integrated Database, and Google Scholar. The date was from 1992 to 2022. RESULTS Approximately 163 chemical compounds have been extracted and identified from MC, including monoterpenes, monoterpene glycosides, triterpenes, phenolics, flavonoids, volatile oils, alkaloids, and others. In these categories, the monoterpene glycosides and phenols being the most common. A wide variety of pharmacological effects have been described for MC crude extracts and active molecules, such as antioxidant, anti-inflammatory, antibacterial and antiviral, antitumor, antidiabetic, organ protection, and neuroprotective activities, as well as treating cardiovascular diseases. Pharmacokinetics has been also used in the study of MC, including its crude extracts or chemical constituents, in order to explore the therapeutic mechanism, direct clinically appropriate application and provide new ideas for the exploitation of innovative medicines. CONCLUSION Modern pharmacological research has demonstrated that MC, as a significant therapeutic resource, has the ability to heal a wide range of diseases, particularly female genital and cardiovascular problems. These researches propose therapeutic ideas for the development of novel MC medicines. Furthermore, preclinical and clinical study have verified several observed pharmacological properties related with the traditional usages of MC.
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Affiliation(s)
- Jincai Liu
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Xiang Li
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Huixin Bai
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Xu Yang
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Jun Mu
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Ruonan Yan
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China
| | - Siwang Wang
- Northwest University Faculty of Life and Health Science, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, China.
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Silva RTC, Guidotti-Takeuchi M, Peixoto JLM, Demarqui FM, Mori AP, Dumont CF, Ferreira GRA, Pereira GDM, Rossi DA, Corbi PP, Pavan FR, Rezende Júnior CDO, Melo RTD, Guerra W. New Palladium(II) Complexes Containing Methyl Gallate and Octyl Gallate: Effect against Mycobacterium tuberculosis and Campylobacter jejuni. Molecules 2023; 28:molecules28093887. [PMID: 37175297 PMCID: PMC10179749 DOI: 10.3390/molecules28093887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 05/15/2023] Open
Abstract
This work describes the preparation, characterization and antimicrobial activity of four palladium(II) complexes, namely, [Pd(meg)(1,10-phen)] 1, [Pd(meg)(PPh3)2] 2, [Pd(og)(1,10-phen)] 3 and [Pd(og)(PPh3)2] 4, where meg = methyl gallate, og = octyl gallate, 1,10-phen = 1,10-phenanthroline and PPh3 = triphenylphosphine. As to the chemical structures, spectral and physicochemical studies of 1-4 indicated that methyl or octyl gallate coordinates a palladium(II) ion through two oxygen atoms upon deprotonation. A chelating bidentate phenanthroline or two triphenylphosphine molecules complete the coordination sphere of palladium(II) ion, depending on the complex. The metal complexes were tested against the Mycobacterium tuberculosis H37Rv strain and 2 exhibited high activity (MIC = 3.28 μg/mL). As to the tests with Campylobacter jejuni, complex 1 showed a significant effect in reducing bacterial population (greater than 7 log CFU) in planktonic forms, as well as in the biomass intensity (IBF: 0.87) when compared to peracetic acid (IBF: 1.11) at a concentration of 400 μg/mL. The effect provided by these complexes has specificity according to the target microorganism and represent a promising alternative for the control of microorganisms of public health importance.
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Affiliation(s)
| | - Micaela Guidotti-Takeuchi
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Jéssica Laura Miranda Peixoto
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Fernanda Manaia Demarqui
- Faculty of Pharmaceutical Sciences, Paulista State University-UNESP, Araraquara Campus, Araraquara 14800-060, SP, Brazil
| | - Ananda Paula Mori
- Institute of Chemistry, Federal University of Uberlândia-UFU, Santa Mônica Campus, Uberlândia 38402-018, MG, Brazil
| | - Carolyne Ferreira Dumont
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | | | | | - Daise Aparecida Rossi
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Pedro Paulo Corbi
- Institute of Chemistry, State University of Campinas-UNICAMP, Campinas 13083-872, SP, Brazil
| | - Fernando Rogério Pavan
- Faculty of Pharmaceutical Sciences, Paulista State University-UNESP, Araraquara Campus, Araraquara 14800-060, SP, Brazil
| | | | - Roberta Torres de Melo
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Wendell Guerra
- Institute of Chemistry, Federal University of Uberlândia-UFU, Santa Mônica Campus, Uberlândia 38402-018, MG, Brazil
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Marji SM, Bayan MF, Jaradat A. Facile Fabrication of Methyl Gallate Encapsulated Folate ZIF-L Nanoframeworks as a pH Responsive Drug Delivery System for Anti-Biofilm and Anticancer Therapy. Biomimetics (Basel) 2022; 7:biomimetics7040242. [PMID: 36546942 PMCID: PMC9775553 DOI: 10.3390/biomimetics7040242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Zeolitic imidazole frameworks are emerging materials and have been considered an efficient platform for biomedical applications. The present study highlights the simple fabrication of methyl gallate encapsulated folate-ZIF-L nanoframeworks (MG@Folate ZIF-L) by a simple synthesis. The nanoframeworks were characterized by different sophisticated instruments. In addition, the drug-releasing mechanism was evidenced by in vitro releasing kinetics at various pH conditions. The anti-biofilm potential confirmed by the biofilm architectural deformations against human infectious pathogens MRSA and N7 clinical strains. Furthermore, anticancer efficacy assessed against A549 lung cancer cells. The result reveals that the MG@Folate ZIF-L exposed a superior cytotoxic effect due to the pH-responsive and receptor-based drug-releasing mechanism. Based on the unique physicochemical and biological characteristics of nanoframeworks, it has overcome the problems of undesired side effects and uncontrolled drug release of existing drug delivery systems. Finally, the in vitro toxicity effect of MG@Folate ZIF-L was tested against the Artemia salina (A. salina) model organism, and the results show enhanced biocompatibility. Overall, the study suggested that the novel MG@Folate ZIF-L nanoframeworks is a suitable material for biomedical applications. It will be very helpful to the future design for targeted drug delivery systems.
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Affiliation(s)
- Saeed M. Marji
- Faculty of Pharmacy, Philadelphia University, P.O. Box 1, Amman 19392, Jordan
- Correspondence: (S.M.M.); (M.F.B.)
| | - Mohammad F. Bayan
- Faculty of Pharmacy, Philadelphia University, P.O. Box 1, Amman 19392, Jordan
- Correspondence: (S.M.M.); (M.F.B.)
| | - Abdolelah Jaradat
- Faculty of Pharmacy, Isra University, P.O. Box 33, Amman 11622, Jordan
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Goda MS, Elhady SS, Nafie MS, Bogari HA, Malatani RT, Hareeri RH, Badr JM, Donia MS. Phragmanthera austroarabica A.G.Mill. and J.A.Nyberg Triggers Apoptosis in MDA-MB-231 Cells In Vitro and In Vivo Assays: Simultaneous Determination of Selected Constituents. Metabolites 2022; 12:metabo12100921. [PMID: 36295823 PMCID: PMC9611470 DOI: 10.3390/metabo12100921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022] Open
Abstract
Phragmanthera austroarabica (Loranthaceae), a semi-parasitic plant, is well known for its high content of polyphenols that are responsible for its antioxidant and anti-inflammatory activities. Gallic acid, catechin, and methyl gallate are bioactive metabolites of common occurrence in the family of Loranthaceae. Herein, the concentrations of these bioactive metabolites were assessed using high-performance thin layer chromatography (HPTLC). Methyl gallate, catechin, and gallic acid were scanned at 280 nm. Their concentrations were assessed as 14.5, 6.5 and 43.6 mg/g of plant dry extract, respectively. Phragmanthera austroarabica extract as well as the three pure compounds were evaluated regarding the cytotoxic activity. The plant extract exhibited promising cytotoxic activity against MDA-MB-231 breast cells with the IC50 value of 19.8 μg/mL while the tested pure compounds displayed IC50 values in the range of 21.26–29.6 μg/mL. For apoptosis investigation, P. austroarabica induced apoptotic cell death by 111-fold change and necrosis by 9.31-fold change. It also activated the proapoptotic genes markers and inhibited the antiapoptotic gene, validating the apoptosis mechanism. Moreover, in vivo studies revealed a significant reduction in the breast tumor volume and weight in solid Ehrlich carcinoma (SEC) mice. The treatment of SEC mice with P. austroarabica extract improved both hematological and biochemical parameters with amelioration in the liver and kidney histopathology to near normal. Taken together, P. austroarabica extract exhibited promising anti-cancer activity through an apoptosis-induction.
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Affiliation(s)
- Marwa S. Goda
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Galala University, New Galala 43713, Egypt
| | - Sameh S. Elhady
- Department of Natural Products, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence: (S.S.E.); (J.M.B.); Tel.: +966-544512552 (S.S.E.); +20-1091332451 (J.M.B.)
| | - Mohamed S. Nafie
- Department of Chemistry, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Hanin A. Bogari
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Raina T. Malatani
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Rawan H. Hareeri
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Jihan M. Badr
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: (S.S.E.); (J.M.B.); Tel.: +966-544512552 (S.S.E.); +20-1091332451 (J.M.B.)
| | - Marwa S. Donia
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
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Methyl Gallate Suppresses Tumor Development by Increasing Activation of Caspase3 and Disrupting Tumor Angiogenesis in Melanoma. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:6295910. [PMID: 36110191 PMCID: PMC9470304 DOI: 10.1155/2022/6295910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/17/2022]
Abstract
Methyl gallate is a phenolic compound mainly found in medicinal plants. It has been reported to its anticancer activity in various tumors. In this study, we aimed to demonstrate the antitumor effect of methyl gallate in the melanoma mouse model and B16F10 cells. Our results showed that methyl gallate decreased cell viability and induced apoptosis by increasing the expression of cleaved caspase3 in B16F10 cells and prevented cell migration and tube formation in human umbilical vein endothelial cells. In B16F10 cell-inoculated mice, methyl gallate not only decreased tumor volume by 30% but also significantly reduced tumor vessel density and pericyte coverage. Moreover, methyl gallate diminished by close to 50% the expression of cytokeratin and LYVE-1 in mouse right inguinal lymph nodes, indicating that methyl gallate could suppress metastasis. In conclusion, this study suggests that methyl gallate inhibits tumor development by inducing apoptosis and blocking tumor angiogenesis and metastasis and might be considered a therapeutic agent for melanoma.
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Kasmawati H, Mustarichie R, Halimah E, Ruslin R, Arfan A, Sida NA. Unrevealing the Potential of Sansevieria trifasciata Prain Fraction for the Treatment of Androgenetic Alopecia by Inhibiting Androgen Receptors Based on LC-MS/MS Analysis, and In-Silico Studies. Molecules 2022; 27:molecules27144358. [PMID: 35889232 PMCID: PMC9318048 DOI: 10.3390/molecules27144358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/24/2022] [Accepted: 07/05/2022] [Indexed: 11/17/2022] Open
Abstract
Androgenetic Alopecia (AGA) occurs due to over-response to androgens causing severe hair loss on the scalp, and requires the development of new and efficient drugs to treat this condition. This study explores and identifies secondary metabolites from Sansevieriatrifasciata Prain using the LC-MS/MS and in-silico method. The inhibitory activity of bioactive compounds from S. trifasciata Prain against androgen receptors (PDB ID: 4K7A) was evaluated molecularly using docking and dynamics studies by comparing their binding energies, interactions, and stability with minoxidil. The results of the LC-MS/MS analysis identified Methyl pyrophaeophorbide A (1), Oliveramine (2), (2S)-3′, 4′-Methylenedioxy-5, 7-dimethoxyflavane (3), 1-Acetyl-β-carboline (4), Digiprolactone (5), Trichosanic acid (6) and Methyl gallate (7) from the leaves subfraction of this plant. Three alkaloid compounds (compounds 1, 3, and 4), and one flavonoid (compound 2), had lower docking scores of −7.0, −5.8, −5.2, and −6.3 kcal/mol, respectively. The prediction of binding energy using the MM-PBSA approach ensured that the potency of the four compounds was better than minoxidil, with energies of −66.13, −59.36, −40.39, and −40.25 kJ/mol for compounds 1, 3, 2, and 4, respectively. The dynamics simulation shows the stability of compound 1 based on the trajectory analysis for the 100 ns simulation. This research succeeded in identifying the compound and assessing the anti-alopecia activity of Sansevieria trifasciata Prain. Seven compounds were identified as new compounds never reported in Sansevieria trifasciata Prain. Four compounds were predicted to have better anti-alopecia activity than minoxidil in inhibiting androgen receptors through an in silico approach.
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Affiliation(s)
- Henny Kasmawati
- Doctoral Program in Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia
- Faculty of Pharmacy, Universitas Halu Oleo, Kendari 93232, Indonesia; (R.R.); (A.A.); (N.A.S.)
- Correspondence: (H.K.); (R.M.)
| | - Resmi Mustarichie
- Department of Analytical Pharmacy and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia
- Correspondence: (H.K.); (R.M.)
| | - Eli Halimah
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Bandung 45363, Indonesia;
| | - Ruslin Ruslin
- Faculty of Pharmacy, Universitas Halu Oleo, Kendari 93232, Indonesia; (R.R.); (A.A.); (N.A.S.)
| | - Arfan Arfan
- Faculty of Pharmacy, Universitas Halu Oleo, Kendari 93232, Indonesia; (R.R.); (A.A.); (N.A.S.)
| | - Nurramadhani A. Sida
- Faculty of Pharmacy, Universitas Halu Oleo, Kendari 93232, Indonesia; (R.R.); (A.A.); (N.A.S.)
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Liu P, Wang W, Li Q, Hu X, Xu B, Wu C, Bai L, Ping L, Lan Z, Chen L. Methyl Gallate Improves Hyperuricemia Nephropathy Mice Through Inhibiting NLRP3 Pathway. Front Pharmacol 2022; 12:759040. [PMID: 34987391 PMCID: PMC8721208 DOI: 10.3389/fphar.2021.759040] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 11/22/2021] [Indexed: 01/16/2023] Open
Abstract
Hyperuricemia nephropathy (HN) is a form of chronic tubulointerstitial inflammation, caused by the deposition of monosodium urate crystals (MSU) in the distal collecting duct and medullary interstitium, associated with a secondary inflammatory reaction. Numerous published reports indicated that NLRP3 inflammasome pathway play crucial roles in HN symptoms. The present study aims to investigate the protective effects of methyl gallate on HN mice and the underlying mechanisms. An HN model was established by intraperitoneal injection of potassium oxide (PO) to assess the effect of methyl gallate on renal histopathological changes, renal function, cytokine levels and expressions of NLRP3-related protein in HN mice. Moreover, in vitro models of lipopolysaccharide (LPS)-stimulated bone marrow-derived macrophages (BMDMs) and human peripheral blood mononuclear cells (PBMCs) were established to explore the mechanism of methyl gallate on NLRP3 inflammasome activation. The results showed that methyl gallate significantly ameliorated HN by inhibiting uric acid production and promoting uric acid excretion as well as ameliorating renal injury induced by NLRP3 activation. Mechanistically, methyl gallate is a direct NLRP3 inhibitor that inhibits NLRP3 inflammasome activation but has no effect on the activation of AIM2 or NLRC4 inflammasomes in macrophages. Furthermore, methyl gallate inhibited the assembly of NLRP3 inflammasomes by blocking the ROS over-generation and oligomerization of NLRP3. Methyl gallate was also active ex vivo against ATP-treated PBMCs and synovial fluid mononuclear cells from patients with gout. In conclusion, methyl gallate has a nephroprotective effect against PO-induced HN through blocking the oligomerization of NLRP3 and then exerting anti-inflammatory activity in the NLRP3-driven diseases.
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Affiliation(s)
- Peng Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Wen Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Qiang Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Xin Hu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Bingyong Xu
- Zhejiang Heze Pharmaceutical Technology Co., Ltd., Hangzhou, China
| | - Chen Wu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Lijie Bai
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Li Ping
- Center for Drug Safety Evaluation and Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Zhou Lan
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, China
| | - Lvyi Chen
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
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Fadzelly AM, Yazan R, Azlen-Che R, Kartinee K, Johnson S, Yuan-Han T, Abdulmannan F, Mohammed SE. Methyl gallate isolated from Mangifera pajang kernel induces proliferation inhibition and apoptosis in MCF-7 breast cancer cells via oxidative stress. Asian Pac J Trop Biomed 2022. [DOI: 10.4103/2221-1691.340562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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13
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Dos Santos RC, de Freitas RON, Foglio MA, de Carvalho JE, Ruiz ALTG, Pessatto LR, Oliveira RJ, Baranoski A, Biazi BI, Mantovani MS, Kassuya CAL, de Oliveira Junior PC, Formagio ASN. Synthesis, Characterization, Antiproliferative Activity of Galloyl Derivatives and Investigation of Cytotoxic Properties in HepG2/C3A cells. Curr Pharm Biotechnol 2021; 23:1623-1633. [PMID: 34923937 DOI: 10.2174/1389201023666211217150837] [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: 06/29/2021] [Revised: 10/07/2021] [Accepted: 12/16/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Appropriate substituents in the galloyl group could lead to significant biological properties. OBJECTIVE Novel galloyl-substituted compounds bearing 2-substituted-1,3,4-oxadiazol-5-yl, 5-substituted-1,2,4-triazol-3-yl, and carboxamide groups were synthesized and evaluated for their antiproliferative activity. Additionally, galloyl hydrazide (2) was evaluated by performing cytotoxicity, membrane integrity, cell cycle, and apoptosis assays in HepG2/C3A cells. METHOD General procedure was used for the synthesis of galloyl-substituted (3-9, 11) and characterized by their spectroscopic data (1H and 13C NMR). The antiproliferative activity of all novel galloyl derivatives was evaluated against nine human tumors and one nontumoral cell line. Three response parameters (GI50, TGI, and LC50) were calculated. The cytotoxicity test was performed for the resazurin assay. The membrane integrity, cell cycle, and apoptosis assays were performed by flow cytometry. RESULTS The substitution of the methoxy group of the galloyl ring system for a carboxamide group (3, 4, 5, and 6) produced compounds with moderate antitumoral activity, particularly 6, against six human cancer cell lines, K-562, PC-3, NCI-ADR/RES, OVCAR, 786-0 and NCI-H460, with GI50 values ≤ 9.45 µg/mL. Triazole derivatives 7 and 8 exhibited higher antitumoral activity toward OVCAR, MCF-7 and leukemia K-562 cell lines, exhibiting GI50 values less than 10 µg/mL. Compound 11 displayed significant activity against PC-3 (GI50 = 4.31 µg/mL), OVCAR (GI50 = 8.84 µg/mL) and K-562 (GI50 = 8.80 µg/mL) cell lines. Galloyl hydrazide (2) had cytotoxic activity in HepG2/C3A cells (IC50 = 153.7 µg/mL). In membrane permeability, cell count, cell cycle, and apoptosis assays, as determined using the IC50 of compound (2) in HepG2/C3A cells, increased membrane permeability, decreased cell count, altered cell cycle, and initial apoptosis was observed compared to the control group. CONCLUSION Thus, our results showed for the first time the synthesis, antiproliferative activity, and cytotoxicity of galloyl-substituted compounds. Galloyl-substitution does not have a very strong synergistic effect in the inhibition of cancer cell proliferation compared with galloyl hydrazide (2). Compound 2 demonstrated promising activity in HepG2/C3A hepatocarcinoma cells.
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Affiliation(s)
- Rafael Claudino Dos Santos
- Faculty of Health Science, Federal University of Grande Dourados - UFGD, Dourados, Mato Grosso do Sul State, Brazil
| | | | - Mary Ann Foglio
- Faculty of Pharmaceutical Science, State University of Campinas - UNICAMP, Campinas, São Paulo State, Brazil dBiological Science Center, State University of Londrina - UEL, Londrina, Paraná State, Brazil
| | - João Ernesto de Carvalho
- Faculty of Pharmaceutical Science, State University of Campinas - UNICAMP, Campinas, São Paulo State, Brazil dBiological Science Center, State University of Londrina - UEL, Londrina, Paraná State, Brazil
| | - Ana Lucia Tasca Góes Ruiz
- Faculty of Pharmaceutical Science, State University of Campinas - UNICAMP, Campinas, São Paulo State, Brazil dBiological Science Center, State University of Londrina - UEL, Londrina, Paraná State, Brazil
| | - Lucas Roberto Pessatto
- Graduate Program in Genetics and Molecular Biology, State University of Londrina - UEL, Londrina, Paraná State, Brazil
| | - Rodrigo Juliano Oliveira
- Faculty of Medicine, Federal University of Mato Grosso do Sul - UFMS, Campo Grande, Mato Grosso do Sul State, Brazil
| | - Adrivanio Baranoski
- Graduate Program in Genetics and Molecular Biology, State University of Londrina - UEL, Londrina, Paraná State, Brazil
| | - Bruna Isabela Biazi
- Graduate Program in Genetics and Molecular Biology, State University of Londrina - UEL, Londrina, Paraná State, Brazil
| | - Mário Sérgio Mantovani
- Graduate Program in Genetics and Molecular Biology, State University of Londrina - UEL, Londrina, Paraná State, Brazil
| | | | - Pedro Cruz de Oliveira Junior
- Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados - UFGD, Dourados, Mato Grosso do Sul State, Brazil
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Khalil M, Hayek S, Khalil N, Serale N, Vergani L, Calasso M, De Angelis M, Portincasa P. Role of Sumac (Rhus coriaria L.) in the management of metabolic syndrome and related disorders: Focus on NAFLD-atherosclerosis interplay. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104811] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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15
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Varela-Rodríguez L, Sánchez-Ramírez B, Saenz-Pardo-Reyes E, Ordaz-Ortiz JJ, Castellanos-Mijangos RD, Hernández-Ramírez VI, Cerda-García-Rojas CM, González-Horta C, Talamás-Rohana P. Antineoplastic Activity of Rhus trilobata Nutt. ( Anacardiaceae) against Ovarian Cancer and Identification of Active Metabolites in This Pathology. PLANTS 2021; 10:plants10102074. [PMID: 34685883 PMCID: PMC8540642 DOI: 10.3390/plants10102074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 11/16/2022]
Abstract
Rhus trilobata (RHTR) is a medicinal plant with cytotoxic activity in different cancer cell lines. However, the active compounds in this plant against ovarian cancer are unknown. In this study, we aimed to evaluate the antineoplastic activity of RHTR and identify its active metabolites against ovarian cancer. The aqueous extract (AE) and an active fraction (AF02) purified on C18-cartridges/ethyl acetate decreased the viability of SKOV-3 cells at 50 and 38 μg/mL, respectively, compared with CHO-K1 (>50 μg/mL) in MTT assays and generated changes in the cell morphology with apoptosis induction in Hemacolor® and TUNEL assays (p ≤ 0.05, ANOVA). The metabolite profile of AF02 showed a higher abundance of flavonoid and lipid compounds compared with AE by UPLC-MSE. Gallic acid and myricetin were the most active compounds in RHTR against SKOV-3 cells at 50 and 166 μg/mL, respectively (p ≤ 0.05, ANOVA). Antineoplastic studies in Nu/Nu female mice with subcutaneous SKOV-3 cells xenotransplant revealed that 200 mg/kg/i.p. of AE and AF02 inhibited ovarian tumor lesions from 37.6% to 49% after 28 days (p ≤ 0.05, ANOVA). In conclusion, RHTR has antineoplastic activity against ovarian cancer through a cytostatic effect related to gallic acid and myricetin. Therefore, RHTR could be a complementary treatment for this pathology.
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Affiliation(s)
- Luis Varela-Rodríguez
- Facultad de Enfermería y Nutriología, Universidad Autónoma de Chihuahua, Chihuahua CP 31125, CHIH, Mexico
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Chihuahua CP 31125, CHIH, Mexico
| | - Blanca Sánchez-Ramírez
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Chihuahua CP 31125, CHIH, Mexico
| | - Erika Saenz-Pardo-Reyes
- Facultad de Enfermería y Nutriología, Universidad Autónoma de Chihuahua, Chihuahua CP 31125, CHIH, Mexico
| | - José Juan Ordaz-Ortiz
- Laboratorio de Metabolómica y Espectrometría de Masas, Unidad de Genómica Avanzada-CINVESTAV, Irapuato CP 36824, GTO, Mexico
| | | | - Verónica Ivonne Hernández-Ramírez
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Ciudad de México CP 07360, CDMX, Mexico
| | - Carlos Martín Cerda-García-Rojas
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Ciudad de México CP 07360, CDMX, Mexico
| | - Carmen González-Horta
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Chihuahua CP 31125, CHIH, Mexico
| | - Patricia Talamás-Rohana
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Ciudad de México CP 07360, CDMX, Mexico
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Yap KM, Sekar M, Seow LJ, Gan SH, Bonam SR, Mat Rani NNI, Lum PT, Subramaniyan V, Wu YS, Fuloria NK, Fuloria S. Mangifera indica (Mango): A Promising Medicinal Plant for Breast Cancer Therapy and Understanding Its Potential Mechanisms of Action. BREAST CANCER-TARGETS AND THERAPY 2021; 13:471-503. [PMID: 34548817 PMCID: PMC8448164 DOI: 10.2147/bctt.s316667] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/13/2021] [Indexed: 12/12/2022]
Abstract
Globally, breast cancer is the most common cancer type and is one of the most significant causes of deaths in women. To date, multiple clinical interventions have been applied, including surgical resection, radiotherapy, endocrine therapy, targeted therapy and chemotherapy. However, 1) the lack of therapeutic options for metastatic breast cancer, 2) resistance to drug therapy and 3) the lack of more selective therapy for triple-negative breast cancer are some of the major challenges in tackling breast cancer. Given the safe nature of natural products, numerous studies have focused on their anti-cancer potentials. Mangifera indica, commonly known as mango, represents one of the most extensively investigated natural sources. In this review, we provide a comprehensive overview of M. indica extracts (bark, kernel, leaves, peel and pulp) and phytochemicals (mangiferin, norathyriol, gallotannins, gallic acid, pyrogallol, methyl gallate and quercetin) reported for in vitro and in vivo anti-breast cancer activities and their underlying mechanisms based on relevant literature from several scientific databases, including PubMed, Scopus and Google Scholar till date. Overall, the in vitro findings suggest that M. indica extracts and/or phytochemicals inhibit breast cancer cell growth, proliferation, migration and invasion as well as trigger apoptosis and cell cycle arrest. In vivo results demonstrated that there was a reduction in breast tumor xenograft growth. Several potential mechanisms underlying the anti-breast cancer activities have been reported, which include modulation of oxidative status, receptors, signalling pathways, miRNA expression, enzymes and cell cycle regulators. To further explore this medicinal plant against breast cancer, future research directions are addressed. The outcomes of the review revealed that M. indica extracts and their phytochemicals may have potential benefits in the management of breast cancer in women. However, to validate its utility in the creation of innovative and potent therapeutic agents to treat breast cancer, more dedicated research, especially clinical studies are needed to explore the anti-breast cancer potentials of M. indica extracts and their phytochemicals.
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Affiliation(s)
- Kah Min Yap
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, 30450, Perak, Malaysia
| | - Mahendran Sekar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, 30450, Perak, Malaysia
| | - Lay Jing Seow
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, 30450, Perak, Malaysia
| | - Siew Hua Gan
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500, Selangor Darul Ehsan, Malaysia
| | - Srinivasa Reddy Bonam
- Institut National de la Santé et de la Recherche Médicale; Centre de Recherche des Cordeliers, Equipe-Immunopathologie et Immunointervention Thérapeutique, Sorbonne Université, Université de Paris, Paris, France
| | - Nur Najihah Izzati Mat Rani
- Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, 30450, Perak, Malaysia
| | - Pei Teng Lum
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, 30450, Perak, Malaysia
| | | | - Yuan Seng Wu
- Faculty of Medicine, Bioscience and Nursing, MAHSA University, Selangor, 42610, Malaysia
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Liu C, He Y, Xu X, He B. Phospholipase Cγ Signaling in Bone Marrow Stem Cell and Relevant Natural Compounds Therapy. Curr Stem Cell Res Ther 2021; 15:579-587. [PMID: 31702518 DOI: 10.2174/1574888x14666191107103755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/18/2019] [Accepted: 08/08/2019] [Indexed: 01/07/2023]
Abstract
Excessive bone resorption has been recognized play a major role in the development of bone-related diseases such as osteoporosis, rheumatoid arthritis, Paget's disease of bone, and cancer. Phospholipase Cγ (PLCγ) family members PLCγ1 and PLCγ2 are critical regulators of signaling pathways downstream of growth factor receptors, integrins, and immune complexes and play a crucial role in osteoclast. Ca2+ signaling has been recognized as an essential pathway to the differentiation of osteoclasts. With growing attention and research about natural occurring compounds, the therapeutic use of natural active plant-derived products has been widely recognized in recent years. In this review, we summarized the recent research on PLCγ signaling in bone marrow stem cells and the use of several natural compounds that were proven to inhibit RANKL-mediated osteoclastogenesis via modulating PLCγ signaling pathways.
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Affiliation(s)
- Chang Liu
- Department of Spine Surgery, Honghui Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China.,Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Yuan He
- Department of Orthopedics, Fifth Hospital of Xi’an, Xi’an, China
| | - Xiaobing Xu
- Department of Neurosurgery, Shunde Hospital of Southern Medical University, Fo Shan, China
| | - Baorong He
- Department of Spine Surgery, Honghui Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China
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Huang CY, Chang YJ, Wei PL, Hung CS, Wang W. Methyl gallate, gallic acid-derived compound, inhibit cell proliferation through increasing ROS production and apoptosis in hepatocellular carcinoma cells. PLoS One 2021; 16:e0248521. [PMID: 33725002 PMCID: PMC7963062 DOI: 10.1371/journal.pone.0248521] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 02/27/2021] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a global health problem. Currently, there is no effective therapeutic strategy for HCC. Methyl gallate (MG), from plant-derived phenolic gallic acid, has exhibited antitumor efficacy. However, the effect of MG on HCC is unclear. In vitro growth activity was detected by a sulforhodamine assay. A zebrafish xenotransplantation was applied to evaluate the inhibitory effect of MG. Reactive oxygen species (ROS) production, autophagy, and lysosome formation were detected by specific dyes. Finally, apoptosis was examined using annexin V-FITC/PI staining and western blot was performed to determine the molecular mechanism. It was demonstrated that MG treatment inhibited the proliferation of Hep3B, Mahlavu, and HepJ5 cells. Xenotransplantation also showed that MG inhibited the growth of Hep3B and HepJ5 cells. MG treatment increased cellular levels of superoxide and oxidative stress. Increases in autophagy and lysosome formation were found after MG treatment. The western blot analysis showed that MG activated cleavage of caspase-3 and poly (SDP ribose) polymerase (PARP), modulated levels of the Bcl2, Bax, and Bad ligands, and induced apoptosis. MG induced autophagy with notable activation of beclin-1, autophagy related 5+12 (ATG5+12), and conversion of light chain 3-I (LC3-I) to II. Our study showed that MG exposure inhibited HCC proliferation both in vitro and in vivo. And blocking autophagy enhanced MG-induced cytotoxicity in HCC cells. These findings suggested MG might serve as a powerful therapeutic supplement for human HCC patients.
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Affiliation(s)
- Chien-Yu Huang
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
- Division of Colorectal Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Pathology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Yu-Jia Chang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- * E-mail: (YJC); (WW)
| | - Po-Li Wei
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Colorectal Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
- Cancer Research Center and Translational Laboratory, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
| | - Chin-Sheng Hung
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Weu Wang
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- * E-mail: (YJC); (WW)
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Kwon M, Jung H, Nam GH, Kim IS. The right Timing, right combination, right sequence, and right delivery for Cancer immunotherapy. J Control Release 2021; 331:321-334. [PMID: 33434599 DOI: 10.1016/j.jconrel.2021.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/06/2021] [Accepted: 01/07/2021] [Indexed: 02/07/2023]
Abstract
Cancer immunotherapy (CI) represented by immune checkpoint inhibitors (ICIs) presents a new paradigm for cancer treatment. However, the types of cancer that attain a therapeutic benefit from ICIs are limited, and the efficacy of these treatments does not meet expectations. To date, research on ICIs has mainly focused on identifying biomarkers and patient characteristics that can enhance the therapeutic effect on tumors. However, studies on combinational strategies for CI are being actively conducted to overcome the resistance to ICI treatment. Moreover, it has been confirmed that dramatic anticancer effects are achieved through "neoadjuvant" immunotherapy with ICIs in treatment-naïve cancer patients; consequently, it has become necessary to consider how to best apply cancer immunotherapies for patients, even with respect to their tumor stages. In this review, we sought to discuss the right timing of ICI treatment in consideration of the progression of cancer with a changing tumor-immune microenvironment. Furthermore, we investigated which types of combinational treatments and their corresponding sequences of administration could optimize the therapeutic effect of ICIs to expand the applicable target of ICIs and increase their therapeutic efficacy. Finally, we discussed several delivery pathways and methods that can maximize the effect of ICIs.
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Affiliation(s)
- Minsu Kwon
- Korea University Anam Hospital, Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea.
| | - Hanul Jung
- Korea University Anam Hospital, Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - Gi-Hoon Nam
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Republic of Korea; Center for Theragnosis, Biomedical Research Institute, Korea Institute Science and Technology (KIST), Seoul, Republic of Korea
| | - In-San Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Republic of Korea; Center for Theragnosis, Biomedical Research Institute, Korea Institute Science and Technology (KIST), Seoul, Republic of Korea.
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Methyl gallate attenuates inflammation induced by Toll-like receptor ligands by inhibiting MAPK and NF-Κb signaling pathways. Inflamm Res 2020; 69:1257-1270. [PMID: 33037469 DOI: 10.1007/s00011-020-01407-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/20/2020] [Accepted: 10/01/2020] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE AND DESIGN Methyl gallate (MG) is a prevalent polyphenol in the plant kingdom, which may be related to the effects of several medicinal plants. Although it is widely reported that polyphenols have therapeutic effects, there are few studies demonstrating that MG has anti-inflammatory action. This study aimed to investigate the molecular mechanism behind the anti-inflammatory activity of MG and its effect on hyperalgesia. METHODS Swiss mice were pretreated orally with different doses of MG and subjected to i.pl. injection of zymosan to induce paw edema. RAW264.7 macrophages and BMDMs stimulated with different TLR agonists such as zymosan, LPS, or Pam3CSK4 were used to investigate the molecular mechanisms of MG RESULTS: MG inhibits zymosan-induced paw edema and hyperalgesia and modulates molecular pathways crucial for inflammation development. Pretreatment with MG inhibited cytokines production and NF-κB activity by RAW 264.7 cells stimulated with zymosan, Pam3CSK4 or LPS, but not with PMA. Moreover, pretreatment with MG decreased IκB degradation, nuclear translocation of NF-κBp65, c-jun and c-fos and ERK1/2, p38 and JNK phosphorylation. CONCLUSION Thus, the results of this study demonstrate that MG has a promising anti-inflammatory effect and suggests an explanation of its mechanism of action through the inhibition of NF-κB signaling and the MAPK pathway.
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Tan YQ, Chen HW, Li J, Wu QJ. Efficacy, Chemical Constituents, and Pharmacological Actions of Radix Paeoniae Rubra and Radix Paeoniae Alba. Front Pharmacol 2020; 11:1054. [PMID: 32754038 PMCID: PMC7365904 DOI: 10.3389/fphar.2020.01054] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 06/29/2020] [Indexed: 01/08/2023] Open
Abstract
Radix Paeoniae Rubra and Radix Paeoniae Alba are the different characteristic forms of Paeonia lactiflora Pall. They are widely used as traditional Chinese medicines in clinical practices. This study analyzes the development history, efficacy, chemical compositions, and pharmacological effects of Radix Paeoniae Rubra and Radix Paeoniae Alba, and explores the causes of the similarities and differences of these two amalgams. It provides a basis for the clinical application of these two Chinese medicinal materials, and lays a foundation for further study of the pharmacological effects and the quality identification of Paeonia lactiflora Pall as it applies to traditional Chinese medicine.
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Affiliation(s)
- Yu-Qing Tan
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Graduate School of Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Heng-Wen Chen
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jun Li
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qing-Juan Wu
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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The Role of Ca 2+-NFATc1 Signaling and Its Modulation on Osteoclastogenesis. Int J Mol Sci 2020; 21:ijms21103646. [PMID: 32455661 PMCID: PMC7279283 DOI: 10.3390/ijms21103646] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 12/14/2022] Open
Abstract
The increasing of intracellular calcium concentration is a fundamental process for mediating osteoclastogenesis, which is involved in osteoclastic bone resorption. Cytosolic calcium binds to calmodulin and subsequently activates calcineurin, leading to NFATc1 activation, a master transcription factor required for osteoclast differentiation. Targeting the various activation processes in osteoclastogenesis provides various therapeutic strategies for bone loss. Diverse compounds that modulate calcium signaling have been applied to regulate osteoclast differentiation and, subsequently, attenuate bone loss. Thus, in this review, we summarized the modulation of the NFATc1 pathway through various compounds that regulate calcium signaling and the calcium influx machinery. Furthermore, we addressed the involvement of transient receptor potential channels in osteoclastogenesis.
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Qiu Y, Xiao Z, Wang Y, Zhang D, Zhang W, Wang G, Chen W, Liang G, Li X, Zhang Y, Liu Z. Optimization and anti-inflammatory evaluation of methyl gallate derivatives as a myeloid differentiation protein 2 inhibitor. Bioorg Med Chem 2019; 27:115049. [PMID: 31466835 DOI: 10.1016/j.bmc.2019.115049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 08/09/2019] [Accepted: 08/15/2019] [Indexed: 01/06/2023]
Abstract
Myeloid differentiation protein 2 (MD2) is a co-receptor of toll-like receptor 4 (TLR4) responsible for the recognition of lipopolysaccharide (LPS) and mediates a series of TLR4-dependent inflammatory responses in inflammatory lung diseases including acute lung injury (ALI). Targeting MD2 thus may provide a therapeutic strategy against these lung diseases. In this study, we identified a novel compound 4k with the potent anti-inflammatory activity among 39 methyl gallate derivatives (MGDs). MGD 4k exhibited a high binding affinity to MD2, which in turn prevented the formation of the LPS/MD2/TLR4 complex. In addition, MGD 4k significantly reversed the upregulation of LPS-induced inflammatory mediators such as tumor necrosis factor-α, interleukin-6, intracellular adhesion molecule-1, vascular cell adhesion molecule-1, and monocyte chemoattractant protein-1 in vitro and in vivo. Mechanistically, MGD 4k performed anti-inflammatory function by inactivating JNK, ERK and p38 signaling pathways. Taken together, our study identified MGD 4k as a novel potential therapeutic agent for ALI through inhibiting MD2, inflammatory responses, and major inflammation-associated signaling pathways.
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Affiliation(s)
- Yinda Qiu
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China; College of Pharmacy, Chonnam National University, 300 Yongbong-Dong, Buk-Gu, Gwangju 500-757, Republic of Korea
| | - Zhongxiang Xiao
- Department of Pharmacy, Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Yanyan Wang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Haerbin, Heilongjiang 150040, People's Republic of China
| | - Dingfang Zhang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Wenxin Zhang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Guangbao Wang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Wenbin Chen
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Guang Liang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China.
| | - Xiaokun Li
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China.
| | - Yali Zhang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China
| | - Zhiguo Liu
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, People's Republic of China.
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Formagio-Neto F, Volobuff CRF, Pederiva MMC, Pereira ZV, Sarragiotto MH, Cardoso CAL, Kassuya CAL, Formagio ASN. Anti-inflammatory action of an alkaloid, fraction and extract from Alchornea glandulosa in mice. JOURNAL OF ETHNOPHARMACOLOGY 2019; 231:66-72. [PMID: 30395975 DOI: 10.1016/j.jep.2018.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 10/12/2018] [Accepted: 11/01/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alchornea glandulosa (Euphorbiaceae) has traditionally been used in medicine for treating immune-mediated inflammatory diseases. AIM OF STUDY This work aimed to evaluate the anti-inflammatory effects of a methanolic extract of leaves from A. glandulosa (MEAG), as well as the ethyl acetate fraction (EAFAG) and isolated compound guanidine alkaloid N-1, N-2, N-3-triisopentenylguanidine (AG-1), in experimental in vivo models of inflammation in mice. We also investigated this extract's phenols, flavonoids and flavonol compounds. MATERIALS AND METHODS MEAG (extracted by maceration with methanol), EAFAG (fraction resulting from the partition of the methanolic extract with ethyl acetate) and AG-1 (alkaloid isolated by chromatographic methods) were analysed. MEAG and EAFAG were analysed by HPLC/DAD. The effects of MEAG (30, 100 and 300 mg/kg), EAFAG (30, 100 and 300 mg/kg) and AG-1 (5 and 30 mg/kg) were studied in the following experimental mouse models: paw oedema and myeloperoxidase (MPO) activity, croton-oil-induced ear oedema, leukocyte migration in a pleurisy model induced by carrageenan and zymosan induction of joint inflammation. RESULTS MEAG and EAFAG were analysed by LC/DAD, and phenolic acids (gallic acid and caffeic acid) and flavonoids (myricetin-3-O-α-rhamnopyranoside and quercetin) were detected. MEAG, EAFAG and AG-1 were used in the carrageenan-induced paw oedema model and showed maximum inhibitions of 60.10% (MEAG, 2 h, 300 mg/kg) and 66.21% (EAFAG, 2 h, 300 mg/kg). AG-1 at 5 mg/kg showed significant inhibition, ranging from 60.92% to 63.13%, at all evaluated times, and the 30 mg/kg dose showed inhibition of 42.12% (1 h) and 40.36% (2 h). MEAG (37%, 46.1% and 68.11%) and EAFAG (31%, 42.21% and 48.93%), at doses of 30, 100 and 300 mg/kg, respectively, significantly reduced the increase in MPO activity, and AG-1 (5 and 30 mg/kg) showed inhibition of 64.62% and 65.12%, respectively. In the pleurisy model, MEAG (300 mg/kg), EAFAG (300 mg/kg) and AG-1 (30 mg/kg) significantly reduced the migration of total leukocytes with maximal inhibition of 80.90%, 83.17% and 89.39%, respectively. In the croton oil model, pretreatment with MEAG (0.1, 0.3 and 1 mg/ear) increased the diameter of the right ear (30.32%, 48.87% and 53.09%, respectively). Finally, MEAG (100 and 300 mg/kg; 33.11% and 56.03%) and EAFAG (100 and 300 mg/kg; 36.89% and 50.53%) reduced zymosan-induced oedema formation. CONCLUSIONS To the best of our knowledge, these results are the first to demonstrate that A. glandulosa exhibits oral and topical anti-inflammatory activity. This study detected alkaloid and phenol/polyphenolic compounds in A. glandulosa, which may help to explain the ethnobotanical use of this plant in traditional medicine in Brazil to treat immune-mediated inflammatory diseases.
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Affiliation(s)
| | | | | | - Zefa Valdevina Pereira
- Federal University of Grande Dourados, Faculty of Biological and Environmental Sciences, Dourados, MS, Brazil.
| | | | | | | | - Anelise Samara Nazari Formagio
- Federal University of Grande Dourados, Faculty of Health Science, Dourados, MS, Brazil; Federal University of Grande Dourados, Faculty of Biological and Environmental Sciences, Dourados, MS, Brazil.
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Hua S, Chen F, Wang X, Wang Y, Gou S. Pt(IV) hybrids containing a TDO inhibitor serve as potential anticancer immunomodulators. J Inorg Biochem 2019; 195:130-140. [PMID: 30952082 DOI: 10.1016/j.jinorgbio.2019.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 02/07/2019] [Accepted: 02/08/2019] [Indexed: 12/21/2022]
Abstract
Tryptophan 2,3-dioxygenase (TDO), an immunosuppressive enzyme, can involve in immune evasion and tumor tolerance. TDO inhibitors can boost the efficacy of chemotherapeutics by promoting immunity. Herein, a strategy to introduce a TDO inhibitor into Pt(IV) complexes for reversing tumor immune suppression was adopted. A mono-modified Pt(IV) complex, 3, displayed significant antitumor activity against human liver cancer cells. Flow cytometry study revealed that complex 3 could induce cell death via a mitochondrial-dependent apoptosis pathway and arrest the cell cycle at S phase. Furthermore, complex 3 was effective to enhance T-cell immune responses by inhibiting the TDO enzyme expression to block the kynurenine production and inactivating the downstream of aryl hydrocarbon receptor (AHR).
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Affiliation(s)
- Shixian Hua
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Feihong Chen
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, Southeast University, Nanjing 211189, China
| | - Xinyi Wang
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yuanjiang Wang
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Shaohua Gou
- Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, Southeast University, Nanjing 211189, China.
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Wang G, Wang JJ, Guan R, Sun Y, Shi F, Gao J, Fu XL. Targeting Strategies for Glucose Metabolic Pathways and T Cells in Colorectal Cancer. Curr Cancer Drug Targets 2018; 19:534-550. [PMID: 30360743 DOI: 10.2174/1568009618666181015150138] [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: 04/07/2017] [Revised: 11/23/2017] [Accepted: 12/24/2017] [Indexed: 11/22/2022]
Abstract
Colorectal cancer is a heterogeneous group of diseases that result from the accumulation of different sets of genomic alterations, together with epigenomic alterations, and it is influenced by tumor-host interactions, leading to tumor cell growth and glycolytic imbalances. This review summarizes recent findings that involve multiple signaling molecules and downstream genes in the dysregulated glycolytic pathway. This paper further discusses the role of the dysregulated glycolytic pathway in the tumor initiation, progression and the concomitant systemic immunosuppression commonly observed in colorectal cancer patients. Moreover, the relationship between colorectal cancer cells and T cells, especially CD8+ T cells, is discussed, while different aspects of metabolic pathway regulation in cancer cell proliferation are comprehensively defined. Furthermore, this study elaborates on metabolism in colorectal cancer, specifically key metabolic modulators together with regulators, glycolytic enzymes, and glucose deprivation induced by tumor cells and how they inhibit T-cell glycolysis and immunogenic functions. Moreover, metabolic pathways that are integral to T cell function, differentiation, and activation are described. Selective metabolic inhibitors or immunemodulation agents targeting these pathways may be clinically useful to increase effector T cell responses for colorectal cancer treatment. However, there is a need to identify specific antigens using a cancer patient-personalized approach and combination strategies with other therapeutic agents to effectively target tumor metabolic pathways.
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Affiliation(s)
- Gang Wang
- Department of Pharmaceutics, Shanghai Eighth People's Hospital, Jiangsu University, 200235, Shanghai, China
| | - Jun-Jie Wang
- Department of Pharmaceutics, Shanghai Eighth People's Hospital, Jiangsu University, 200235, Shanghai, China
| | - Rui Guan
- Hubei University of Medicine, NO. 30 People South Road, Shiyan City, Hubei Province 442000, China
| | - Yan Sun
- Hubei University of Medicine, NO. 30 People South Road, Shiyan City, Hubei Province 442000, China
| | - Feng Shi
- Department of Medicine, Jiangsu University, Zhenjiang City, Jiangsu Province 212001, China
| | - Jing Gao
- Department of Medicine, Jiangsu University, Zhenjiang City, Jiangsu Province 212001, China
| | - Xing-Li Fu
- Department of Medicine, Jiangsu University, Zhenjiang City, Jiangsu Province 212001, China
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Gallnuts: A Potential Treasure in Anticancer Drug Discovery. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:4930371. [PMID: 29785193 PMCID: PMC5896229 DOI: 10.1155/2018/4930371] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 02/17/2018] [Accepted: 02/21/2018] [Indexed: 12/18/2022]
Abstract
Introduction. In the discovery of more potent and selective anticancer drugs, the research continually expands and explores new bioactive metabolites coming from different natural sources. Gallnuts are a group of very special natural products formed through parasitic interaction between plants and insects. Though it has been traditionally used as a source of drugs for the treatment of cancerous diseases in traditional and folk medicinal systems through centuries, the anticancer properties of gallnuts are barely systematically reviewed. Objective. To evidence the traditional uses and phytochemicals and pharmacological mechanisms in anticancer aspects of gallnuts, a literature review was performed. Materials and Methods. The systematic review approach consisted of searching web-based scientific databases including PubMed, Web of Science, and Science Direct. The keywords for searching include gallnut, Galla Chinensis, Rhus chinensis, Rhus potaninii, Rhus punjabensis, nutgall, gall oak, Quercus infectoria, Quercus lusitanica, and galla turcica. Two reviewers extracted papers independently to remove the papers unrelated to the anticancer properties of gallnuts. Patents, abstracts, case reports, and abstracts in symposium and congress were excluded. Results and Conclusion. As a result, 14 articles were eligible to be evaluated. It is primarily evident that gallnuts contain a number of bioactive metabolites, which account for anticancer activities. The phytochemical and pharmacological studies reviewed strongly underpin a fundamental understanding of anticancer properties for gallnuts (Galla Chinensis and Galla Turcica) and support their ongoing clinical uses in China. The further bioactive compounds screening and evaluation, pharmacological investigation, and clinical trials are expected to progress gallnut-based development to finally transform the wild medicinal gallnuts to the valuable authorized anticancer drugs.
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Sameh S, Al-Sayed E, Labib RM, Singab AN. Genus Spondias: A Phytochemical and Pharmacological Review. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2018; 2018:5382904. [PMID: 29785194 PMCID: PMC5896409 DOI: 10.1155/2018/5382904] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/23/2017] [Accepted: 01/11/2018] [Indexed: 02/03/2023]
Abstract
It is believed that many degenerative diseases are due to oxidative stress. In view of the limited drugs available for treating degenerative diseases, natural products represent a promising therapeutic strategy in the search for new and effective candidates for treating degenerative diseases. This review focuses on the genus Spondias which is widely used in traditional medicine for the treatment of many diseases. Spondias is a genus of flowering plants belonging to the cashew family (Anacardiaceae). This genus comprises 18 species distributed across tropical regions in the world. A variety of bioactive phytochemical constituents were isolated from different plants belonging to the genus Spondias. Diverse pharmacological activities were reported for the genus Spondias including cytotoxic, antioxidant, ulcer protective, hepatoprotective, anti-inflammatory, antiarthritic, and antidementia effects. These attributes indicate their potential to treat various degenerative diseases. The aim of this review is to draw attention to the unexplored potential of phytochemicals obtained from Spondias species, thereby contributing to the development of new therapeutic alternatives that may improve the health of people suffering from degenerative diseases and other health problems.
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Affiliation(s)
- Salma Sameh
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
| | - Eman Al-Sayed
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
| | - Rola M. Labib
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
| | - Abdel Nasser Singab
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
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Li SS, Wu Q, Yin DD, Feng CY, Liu ZA, Wang LS. Phytochemical variation among the traditional Chinese medicine Mu Dan Pi from Paeonia suffruticosa (tree peony). PHYTOCHEMISTRY 2018; 146:16-24. [PMID: 29207319 DOI: 10.1016/j.phytochem.2017.11.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 11/06/2017] [Accepted: 11/22/2017] [Indexed: 05/12/2023]
Abstract
Mu Dan Pi is a traditional Chinese medicine used to treat inflammation, cancer, allergies, diabetes, angiocardiopathy, and neurodegenerative diseases. In this study, the metabolome variation within Mu Dan Pi collected from 372 tree peony cultivars was systematically investigated. In total, 42 metabolites were identified, comprising of 14 monoterpene glucosides, 11 tannins, 8 paeonols, 6 flavonoids, and 3 phenols. All cultivars revealed similar metabolite profiles, however, they were further classified into seven groups on the basis of their varying metabolite contents by hierarchical cluster analysis. Traditional cultivars for Mu Dan Pi were found to have very low metabolite contents, falling into clusters I and II. Cultivars with the highest amounts of metabolites were grouped in clusters VI and VII. Five potential cultivars, namely, 'Bai Yuan Qi Guan', 'Cao Zhou Hong', 'Da Zong Zi', 'Sheng Dan Lu', and 'Cheng Xin', with high contents of monoterpene glycosides, tannins, and paeonols, were further screened. Interestingly, the majority of investigated cultivars had relatively higher metabolite contents compared to the traditional medicinal tree peony cultivars.
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Affiliation(s)
- Shan-Shan Li
- Key Laboratory of Plant Resources/Beijing Botanical Garden, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China
| | - Qian Wu
- Key Laboratory of Plant Resources/Beijing Botanical Garden, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dan-Dan Yin
- Key Laboratory of Plant Resources/Beijing Botanical Garden, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Cheng-Yong Feng
- Key Laboratory of Plant Resources/Beijing Botanical Garden, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng-An Liu
- Key Laboratory of Plant Resources/Beijing Botanical Garden, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China.
| | - Liang-Sheng Wang
- Key Laboratory of Plant Resources/Beijing Botanical Garden, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Blockade of MCP-1/CCR4 signaling-induced recruitment of activated regulatory cells evokes an antitumor immune response in head and neck squamous cell carcinoma. Oncotarget 2018; 7:37714-37727. [PMID: 27177223 PMCID: PMC5122343 DOI: 10.18632/oncotarget.9265] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 04/26/2016] [Indexed: 01/20/2023] Open
Abstract
FoxP3+ regulatory T (Treg) cells have diverse functions in the suppression of antitumor immunity. We show that FoxP3hiCD45RA−CD4+ Treg cells [activated Treg (aTreg) cells] are the predominant cell population among tumor-infiltrating FoxP3+ T cells, and that high aTreg cell-infiltrating content is associated with reduced survival in patients with head and neck squamous cell carcinoma (HNSCC). In vitro studies have demonstrated that aTreg cells can suppress tumor-associated antigen (TAA) effector T cell immune responses in HNSCC. Moreover, C-C chemokine receptor 4 (CCR4) was specifically expressed by aTreg cells in the peripheral blood of HNSCC patients. Using a RayBiotech human chemokine antibody array, we showed that monocyte chemoattractant protein-1 (MCP-1), an endogenous CCR4-binding ligand, was specifically upregulated in the HNSCC microenvironment compared to the other four CCR4-binding ligands. Blocking MCP-1/CCR4 signaling-induced aTreg cell recruitment using a CCR4 antagonist evoked antitumor immunity in mice, and lead to inhibition of tumor growth and prolonged survival. Therefore, blocking aTreg cell trafficking in tumors using CCR4-binding agents may be an effective immunotherapy for HNSCC.
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Methyl Gallate Inhibits Osteoclast Formation and Function by Suppressing Akt and Btk-PLCγ2-Ca 2+ Signaling and Prevents Lipopolysaccharide-Induced Bone Loss. Int J Mol Sci 2017; 18:ijms18030581. [PMID: 28272351 PMCID: PMC5372597 DOI: 10.3390/ijms18030581] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 12/20/2022] Open
Abstract
In the field of bone research, various natural derivatives have emerged as candidates for osteoporosis treatment by targeting abnormally elevated osteoclastic activity. Methyl gallate, a plant-derived phenolic compound, is known to have numerous pharmacological effects against inflammation, oxidation, and cancer. Our purpose was to explore the relation between methyl gallate and bone metabolism. Herein, we performed screening using methyl gallate by tartrate resistant acid phosphatase (TRAP) staining and revealed intracellular mechanisms responsible for methyl gallate-mediated regulation of osteoclastogenesis by Western blotting and quantitative reverse transcription polymerase chain reaction (RT-PCR). Furthermore, we assessed the effects of methyl gallate on the characteristics of mature osteoclasts. We found that methyl gallate significantly suppressed osteoclast formation through Akt and Btk-PLCγ2-Ca2+ signaling. The blockade of these pathways was confirmed through transduction of cells with a CA-Akt retrovirus and evaluation of Ca2+ influx intensity (staining with Fluo-3/AM). Indeed, methyl gallate downregulated the formation of actin ring-positive osteoclasts and resorption pit areas. In agreement with in vitro results, we found that administration of methyl gallate restored osteoporotic phenotype stimulated by acute systemic injection of lipopolysaccharide in vivo according to micro-computed tomography and histological analysis. Our data strongly indicate that methyl gallate may be useful for the development of a plant-based antiosteoporotic agent.
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Rahman N, Jeon M, Kim YS. Methyl gallate, a potent antioxidant inhibits mouse and human adipocyte differentiation and oxidative stress in adipocytes through impairment of mitotic clonal expansion. Biofactors 2016; 42:716-726. [PMID: 27412172 DOI: 10.1002/biof.1310] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/30/2016] [Accepted: 06/05/2016] [Indexed: 01/31/2023]
Abstract
Methyl gallate (MG) is a derivative of gallic acid and a potent antioxidant. In this study, we confirmed that MG treatment effectively inhibits lipid accumulation, which occurred mostly in the early stages of adipogenesis. We also showed that shortly after adipogenic induction, MG facilitated a G0/G1 cell cycle arrest. Mechanistic studies revealed that MG treatment inhibited ERK1/2 phosphorylation, which is a key regulator of the G1- to S-phase transition. Furthermore, MG treatment prevented the adipogenic hormonal stimuli-induced inhibition of the cyclin-dependent kinase inhibitor p27Kip1 . This led to inhibition of the transcription factor E2F1 by preventing the phosphorylation of, and thereby activation of its destruction partner RB. MG treatment also downregulated factors that are upstream of RB-E2F1 signaling such as Cdk2, Cyclin E, Cdk4, and Cyclin D1 where Cyclin D3 level was unaffected. We also found that MG treatment markedly decreased the expression and phosphorylation of C/EBPβ, by phosphorylating, and therefore inactivating, GSK3β, which is a prerequisite for its DNA binding capacity, and thereby mitotic clonal expansion (MCE). Ultimately, MG treatment downregulates key terminal adipogenic transcription factors including C/EBPα, PPARγ, aP2 (Fabp4), and adiponectin. Moreover, MG also protects adipocytes from oxidative stress by alleviating intracellular reactive oxygen species and activating Nrf2, HO-1, and PRDX3. Thus, this study provides a mechanistic insight into the anti-adipogenic actions of MG. © 2016 BioFactors, 42(6):716-726, 2016.
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Affiliation(s)
- Naimur Rahman
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
- Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
| | - Miso Jeon
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
- Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
| | - Yong-Sik Kim
- Department of Microbiology, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
- Institute of Tissue Engineering, College of Medicine, Soonchunhyang University, Cheonan, Chung-nam, 330-090, Korea
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Correa LB, Pádua TA, Seito LN, Costa TEMM, Silva MA, Candéa ALP, Rosas EC, Henriques MG. Anti-inflammatory Effect of Methyl Gallate on Experimental Arthritis: Inhibition of Neutrophil Recruitment, Production of Inflammatory Mediators, and Activation of Macrophages. JOURNAL OF NATURAL PRODUCTS 2016; 79:1554-1566. [PMID: 27227459 DOI: 10.1021/acs.jnatprod.5b01115] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Methyl gallate (MG) is a prevalent phenolic acid in the plant kingdom, and its presence in herbal medicines might be related to its remarkable biological effects, such as its antioxidant, antitumor, and antimicrobial activities. Although some indirect evidence suggests anti-inflammatory activity for MG, there are no studies demonstrating this effect in animal models. Herein, we demonstrated that MG (0.7-70 mg/kg) inhibited zymosan-induced experimental arthritis in a dose-dependent manner. The oral administration of MG (7 mg/kg) attenuates arthritis induced by zymosan, affecting edema formation, leukocyte migration, and the production of inflammatory mediators (IL-1β, IL-6, TNF-α, CXCL-1, LTB4, and PGE2). Pretreatment with MG inhibited in vitro neutrophil chemotaxis elicited by CXCL-1, as well as the adhesion of these cells to TNF-α-primed endothelial cells. MG also impaired zymosan-stimulated macrophages by inhibiting IL-6 and NO production, COX-2 and iNOS expression, and intracellular calcium mobilization. Thus, MG is likely to present an anti-inflammatory effect by targeting multiple cellular events such as the production of various inflammatory mediators, as well as leukocyte activation and migration.
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Affiliation(s)
- Luana Barbosa Correa
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
| | - Tatiana Almeida Pádua
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
| | - Leonardo Noboru Seito
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
| | - Thadeu Estevam Moreira Maramaldo Costa
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
| | - Magaiver Andrade Silva
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
| | - André Luis Peixoto Candéa
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
| | - Elaine Cruz Rosas
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
| | - Maria G Henriques
- Laboratory of Applied Pharmacology, Farmanguinhos, and ‡National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz) , Rio de Janeiro, RJ, Brazil
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Anti-tumor effect of Radix Paeoniae Rubra extract on mice bladder tumors using intravesical therapy. Oncol Lett 2016; 12:904-910. [PMID: 27446367 PMCID: PMC4950246 DOI: 10.3892/ol.2016.4698] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 04/29/2016] [Indexed: 01/26/2023] Open
Abstract
Radix Paeoniae Rubra (RPR) is the dried root of Paeonia lactiflora Pallas and Paeonia veitchii Lynch, and is a herbal medicine that is widely used in traditional Chinese medicine for the treatment of blood-heat and blood-stasis syndrome, similarly to Cortex Moutan. The present study identified the same three components in RPR and Cortex Moutan extracts. In addition, it has been reported that RPR has an anti-cancer effect. Bladder cancer is the seventh most common type of cancer worldwide. Due to the high recurrence rate, identifying novel drugs for bladder cancer therapy is essential. In the present study, RPR extract was evaluated as a bladder cancer therapy in vitro and in vivo. The present results revealed that RPR extract reduced the cell viability of bladder cancer cells with a half maximal inhibitory concentration of 1-3 mg/ml, and had an extremely low cytotoxic effect on normal urothelial cells. Additionally, RPR decreased certain cell cycle populations, predominantly cells in the G1 phase, and caused a clear sub-G increase. In a mouse orthotopic bladder tumor model, intravesical application of RPR extract decreased the bladder tumor size without altering the blood biochemical parameters of the mice. In summary, the present results demonstrate the anti-proliferative properties of RPR extract on bladder cancer cells, and its anti-bladder tumor effect in vivo. Compared to Cortex Moutan extract, RPR extract may provide a more effective alternative therapeutic strategy for the intravesical therapy of superficial bladder cancer.
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Kim H, Lee G, Sohn SH, Lee C, Kwak JW, Bae H. Immunotherapy with methyl gallate, an inhibitor of Treg cell migration, enhances the anti-cancer effect of cisplatin therapy. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2016; 20:261-8. [PMID: 27162480 PMCID: PMC4860368 DOI: 10.4196/kjpp.2016.20.3.261] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 01/15/2016] [Accepted: 03/14/2016] [Indexed: 11/15/2022]
Abstract
Foxp3(+) CD25(+)CD4(+) regulatory T (Treg) cells are crucial for the maintenance of immunological self-tolerance and are abundant in tumors. Most of these cells are chemo-attracted to tumor tissues and suppress anti-tumor responses inside the tumor. Currently, several cancer immunotherapies targeting Treg cells are being clinically tested. Cisplatin is one of the most potent chemotherapy drugs widely used for cancer treatment. While cisplatin is a powerful drug for the treatment of multiple cancers, there are obstacles that limit its use, such as renal dysfunction and the development of cisplatin-resistant cancer cells after its use. To minimize these barriers, combinatorial therapies of cisplatin with other drugs have been developed and have proven to be more effective to treat cancer. In the present study, we evaluated the eff ect of the combination therapy using methyl gallate with cisplatin in EL4 murine lymphoma bearing C57BL/6 mice. The combinatorial therapy of methyl gallate and cisplatin showed stronger anti-cancer eff ects than methyl gallate or cisplatin as single treatments. In Treg cell-depleted mice, however, the eff ect of methyl gallate vanished. It was found that methyl gallate treatment inhibited Treg cell migration into the tumor regardless of cisplatin treatment. Additionally, in both the normal and cisplatin-treated tumor-bearing mice, there was no renal toxicity attributed to methyl gallate treatment. These findings suggest that methyl gallate treatment could be useful as an adjuvant method accompanied with cisplatin therapy.
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Affiliation(s)
- Hyunseong Kim
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Gihyun Lee
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Sung-Hwa Sohn
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Chanju Lee
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Jung Won Kwak
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Hyunsu Bae
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
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In vitro glucuronidation of methyl gallate and pentagalloyl glucopyranose by liver microsomes. Drug Metab Pharmacokinet 2016; 31:292-303. [PMID: 27325020 DOI: 10.1016/j.dmpk.2016.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 04/04/2016] [Accepted: 04/06/2016] [Indexed: 11/23/2022]
Abstract
Methyl gallate (MG) and pentagalloyl glucopyranose (PGG) are bioactive phenolic compounds that possess various pharmacological activities. However, the knowledge of hepatic metabolism of MG and PGG is limited. The purpose of this study was to investigate the in vitro glucuronidation of MG and PGG using liver microsomes from human (HLMs) and rats (Sprague-Dawley, SDRLMs; Wistar, WRLMs; and Gunn, GRLMs), and recombinant human uridine 5'-diphospho-glucuronosyltransferases (UGT) 1A1 and 1A9. The results demonstrated that liver microsomes catalyzed two mono-glucuronided MG (M1 and M2) formations but that UGT1A1 and 1A9 catalyzed only M1 formation. For PGG, a mono-glucuronided metabolite was mediated by liver microsomes or UGT1A9. However, a PGG glucuronide was absent in the UGT1A1 system. Additionally, all metabolites showed susceptibility to β-glucuronidases. Furthermore, the glucuronidation activities of PGG were lower than those of MG. The kinetic parameters of MG glucuronidation demonstrated that the SDRLMs and GRLMs were more similar to the HLMs than the WRLMs for the formations of M1 and M2, respectively and that the SDRLMs and HLMs preferentially contributed to M1, whereas the WRLMs and GRLMs showed the favored formation of M2. In conclusion, MG and PGG were subjectively glucuronided by liver microsomes to demonstrate species- and strain-dependent metabolism.
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Ye M, Chung HS, Lee C, Yoon MS, Yu AR, Kim JS, Hwang DS, Shim I, Bae H. Neuroprotective effects of bee venom phospholipase A2 in the 3xTg AD mouse model of Alzheimer's disease. J Neuroinflammation 2016; 13:10. [PMID: 26772975 PMCID: PMC4715334 DOI: 10.1186/s12974-016-0476-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 01/05/2016] [Indexed: 11/10/2022] Open
Abstract
Background Alzheimer’s disease (AD) is a severe neuroinflammatory disease. CD4+Foxp3+ regulatory T cells (Tregs) modulate various inflammatory diseases via suppressing Th cell activation. There are increasing evidences that Tregs have beneficial roles in neurodegenerative diseases. Previously, we found the population of Treg cells was significantly increased by bee venom phospholipase A2 (bvPLA2) treatment in vivo and in vitro. Methods To examine the effects of bvPLA2 on AD, bvPLA2 was administered to 3xTg-AD mice, mouse model of Alzheimer’s disease. The levels of amyloid beta (Aβ) deposits in the hippocampus, glucose metabolism in the brain, microglia activation, and CD4+ T cell infiltration were analyzed to evaluate the neuroprotective effect of bvPLA2. Results bvPLA2 treatment significantly enhanced the cognitive function of the 3xTg-AD mice and increased glucose metabolism, as assessed with 18F-2 fluoro-2-deoxy-D-glucose ([F-18] FDG) positron emission tomography (PET). The levels of Aβ deposits in the hippocampus were dramatically decreased by bvPLA2 treatment. This neuroprotective effect of bvPLA2 was associated with microglial deactivation and reduction in CD4+ T cell infiltration. Interestingly, the neuroprotective effects of bvPLA2 were abolished in Treg-depleted mice. Conclusions The present studies strongly suggest that the increase of Treg population by bvPLA2 treatment might inhibit progression of AD in the 3xTg AD mice.
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Affiliation(s)
- Minsook Ye
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoegi-dong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea.
| | - Hwan-Suck Chung
- Korean Medicine (KM)-Application Center, Korea Institute of Oriental Medicine (KIOM), 70, Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea.
| | - Chanju Lee
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoegi-dong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea.
| | - Moon Sik Yoon
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoegi-dong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea.
| | - A Ram Yu
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences, University of Science and Technology, #215-4 Gongneug-dong, Nowon-ku, Seoul, 139-241, Republic of Korea.
| | - Jin Su Kim
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences, University of Science and Technology, #215-4 Gongneug-dong, Nowon-ku, Seoul, 139-241, Republic of Korea.
| | - Deok-Sang Hwang
- Department of Obstetrics and Gynecology, College of Korean Medicine, Kyung Hee University, #1 Hoegi-dong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea.
| | - Insop Shim
- Acupuncture and Meridian Science Research Center, College of Korean Medical Science Graduate School, Kyung Hee University, #1 Hoegi-dong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea.
| | - Hyunsu Bae
- Department of Physiology, College of Korean Medicine, Kyung Hee University, #1 Hoegi-dong, Dongdaemoon-ku, Seoul, 130-701, Republic of Korea.
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Chaudhuri D, Ghate NB, Singh SS, Mandal N. Methyl gallate isolated from Spondias pinnata exhibits anticancer activity against human glioblastoma by induction of apoptosis and sustained extracellular signal-regulated kinase 1/2 activation. Pharmacogn Mag 2015; 11:269-76. [PMID: 25829764 PMCID: PMC4378123 DOI: 10.4103/0973-1296.153078] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 10/14/2014] [Accepted: 03/12/2015] [Indexed: 11/05/2022] Open
Abstract
Background: Spondias pinnata has been reported for its efficient anticancer effects, but the studies were mostly focused on its extract. Objective: Since its bioactive compounds are largely unknown, this study was designed to characterize the lead components present in it and their anticancer activity against human glioblastoma cell line (U87). Materials and Methods: Major compounds from the ethyl acetate fraction were isolated by column chromatography and their anticancer potentials against U87 cells were evaluated. Furthermore, flow cytometric and immunoblotting analyses were performed to demonstrate the mechanism of apoptosis inducing activity of methyl gallate (MG) against U87 cell line. Results: Four major compounds were isolated from the ethyl acetate fraction. Amongst these, two compounds showed promising activities and with the help of different spectroscopic methods they were identified as gallic acid and MG. Flow cytometric studies revealed that MG-induced apoptosis in U87 cells dose-dependently; the same was confirmed by activation of caspases through cleavage of endogenous substrate poly (adenosine diphosphate-ribose) polymerase. MG treatment also induced the expression of p53 and B-cell lymphoma-2-associated X and cleavage of BH3 interacting-domain with a concomitant decrease in B-cell lymphoma-2 expression. Moreover, MG-induced sustained phosphorylation of extracellular signal-regulated kinase (ERK1/2) in U87 cells with no change in the phosphorylation of other mitogen-activated protein kinases (c-Jun N-terminal of stress-activated protein kinases, p38). Conclusion: MG is a potent antioxidant and it induces sustained ERK1/2 activation and apoptosis in human glioblastoma U87, and provide a rationale for evaluation of MG for other brain carcinoma cell lines for the advancement of glioblastoma therapy.
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Affiliation(s)
- Dipankar Chaudhuri
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
| | - Nikhil Baban Ghate
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
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Synthesis, antiproliferative activity and molecular properties predictions of galloyl derivatives. Molecules 2015; 20:5360-73. [PMID: 25816079 PMCID: PMC6272127 DOI: 10.3390/molecules20045360] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 03/06/2015] [Accepted: 03/09/2015] [Indexed: 12/14/2022] Open
Abstract
The present study was designed to investigate the in vitro antiproliferative activity against ten human cancer cell lines of a series of galloyl derivatives bearing substituted-1,3,4-oxadiazole and carbohydrazide moieties. The compounds were also assessed in an in silico study of the absorption, distribution, metabolism and excretion (ADME) in the human body using Lipinski’s parameters, the topological polar surface area (TPSA) and percentage of absorption (%ABS). In general, the introduction of N'-(substituted)-arylidene galloyl hydrazides 4–8 showed a moderate antitumor activity, while the 2-methylthio- and 2-thioxo-1,3,4-oxadiazol-5-yl derivatives 9 and 10 led to increased inhibition of cancer cell proliferation. The precursor compound methyl gallate 2 and the intermediary galloyl hydrazide 3 showed greater antiproliferative activity with GI50 values < 5.54 µM against all human tumor cell lines tested. A higher inhibition effect against ovarian cancer (OVCAR-3) (GI50 = 0.05–5.98 µM) was also shown, with compounds 2, 3, 9 and 10 with GI50 ≤ 0.89 µM standing out in this respect. The in silico study revealed that the compounds showed good intestinal absorption.
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Kamatham S, Kumar N, Gudipalli P. Isolation and characterization of gallic acid and methyl gallate from the seed coats of Givotia rottleriformis Griff. and their anti-proliferative effect on human epidermoid carcinoma A431 cells. Toxicol Rep 2015; 2:520-529. [PMID: 28962387 PMCID: PMC5598244 DOI: 10.1016/j.toxrep.2015.03.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/06/2015] [Accepted: 03/06/2015] [Indexed: 12/09/2022] Open
Abstract
We isolated gallic acid (GA) and methyl gallate (MG) from the seed coats of G. rottleriformis. We investigated the effect of purified GA and MG on A431 skin cancer cell proliferation in a dose and time dependent manner. We analyzed the apoptosis enhancer/suppressor regulatory marker proteins in GA/MG treated A431 cells in a dose or time dependent manner. We found that GA/MG is an effective natural molecule to avoid the risk of skin cancers.
Gallic acid (GA) and its derivative methyl gallate (MG) are well studied plant phenolics. They have exhibited anticancer effects in several cancer cell lines. However, the presence of GA/MG in the seed coats of Givotia rottleriformis and their inhibitory effect on human epidermoid carcinoma (A431) skin cancer cells were not reported. In this study we have isolated and chemically characterized the bioactive compounds GA and MG from the bioassay guided methanolic (MeOH) seed coat extracts of G. rottleriformis. The fractions obtained from open silica column chromatography were subjected to in vitro enzymatic assays. Among seven fractions we found that only fractions 5 and 6 showed significant inhibition activity toward COX-1 with an IC50 value of 28 μg/mL and 9.3 μg/mL and COX-2 with an IC50 value of 35 μg/mL and 7.0 μg/mL respectively. However, we could not find 5-LOX enzyme inhibition activity. MG (10 mg/g DW) and GA (6 mg/g DW) were the major compounds of seed coats. Cell viability was analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay, which showed that GA/MG significantly reduced the growth of A431 cells with an IC50 value of 25 μg/mL and 53 μg/mL and 11 μg/mL and 43 μg/mL at 24 h and 48 h, respectively. However the cytotoxic effect of GA/MG on HaCaT normal skin keratinocyte cell line was found to be less. Western blot analysis has shown that GA/MG treatment down regulated Bcl-2 and up regulated cleaved caspase-3 with respect to increasing doses. Our results conclude that GA and MG have potential anticancer effects and can be used as therapeutic agents for skin cancers.
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Affiliation(s)
- Samuel Kamatham
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Naresh Kumar
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Padmaja Gudipalli
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
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A validated liquid chromatography-tandem mass spectrometry method for the determination of methyl gallate and pentagalloyl glucopyranose: application to pharmacokinetic studies. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 986-987:12-7. [PMID: 25703947 DOI: 10.1016/j.jchromb.2015.02.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 01/30/2015] [Accepted: 02/03/2015] [Indexed: 11/23/2022]
Abstract
Methyl gallate (MG) and pentagalloyl glucopyranose (PGG) are bioactive phenolic compounds that are widely distributed in herbs and plant foods. Their potential activities include anti-oxidant, anti-inflammatory, anti-cancer, anti-bacterial and anti-viral activities. However, knowledge concerning the pharmacokinetic characteristics of MG and PGG is limited. The purpose of this study was to develop a sensitive and reproducible ultra-performance liquid chromatography-tandem mass spectrometric (UPLC-MS/MS) method to simultaneously quantify MG and PGG in rat blood samples. The linear response ranges for MG and PGG were 0.0195-20 and 0.0390-20 μM, respectively. The lower limit of quantification was 0.0195 μM for MG and 0.0390 μM for PGG. The intra- and inter-day variances were less than 15%, and accuracy was within 80-120%. This assay was successfully applied to pharmacokinetic studies in Sprague-Dawley rats after intraperitoneal administration of MG and PGG (20 mg/kg). The values of areas under the blood concentration time curves (AUC₀₋₂₄ h) for MG and PGG were 109.9 ± 73.40 and 38.78 ± 24.53 h*μM, respectively. The maximum blood concentrations (Cmax) of MG and PGG were 34.72 ± 17.32 and 6.39 ± 4.25 μM, respectively. The time required to reach the maximum concentration (Tmax) was 0.85 ± 0.70 h for both MG and PGG. The values of the elimination rate constant (Ke), elimination half-life (t1/2), volume of distribution (Vd), clearance (Cl) and mean resident time (MRTlast) were 0.056 ± 0.032 h(-1), 17.50 ± 12.25 h, 530.95 ± 247.54 L/kg, 159.91±76.05L/h/kg, 8.71 ± 2.53 h for MG and 0.023 ± 0.012 h(-1), 38.66 ± 22.89 h, 7838.89 ± 3474.72 L/kg, 30.98 ± 21.73 L/h/kg, 12.47 ± 2.77 h for PGG, respectively. In conclusion, a UPLC-MS/MS method was fully validated over a wide linear range and used to quantify the levels of MG and PGG in pharmacokinetic studies of MG and PGG in rats. The main advantages of this method are the use of small blood volumes (10 μL), rapid analysis (5 min) and excellent recoveries.
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Lee JK. Anti-Depressant Like Effect of Methyl Gallate Isolated from Acer barbinerve in Mice. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2013; 17:441-6. [PMID: 24227946 PMCID: PMC3823958 DOI: 10.4196/kjpp.2013.17.5.441] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 07/23/2013] [Accepted: 07/29/2013] [Indexed: 12/30/2022]
Abstract
In the present study, the anti-depressant like effect of methyl gallate (MG) isolated from the stem bark of Acer barbinerve was examined in ICR mice. Body weight (BDW) and blood glucose (BDG) levels significantly decreased in the repeated restraint stress (RRS) group (2 h/day for 14 days) compared to the no stress (NS) group. To examine the effect of MG on RS-induced BDW loss and hypoglycemia, MG (10 mg/kg) and the anti-depressant fluoxetine (10 mg/kg) were administered daily for 14 days. Orally administered MG and fluoxetine significantly attenuated the RS-induced BDW loss and hypoglycemia. Interestingly, MG administered mice showed increased BDG levels in the normal and glucose feeding condition. Chronic RS-subjected mice showed immobilized and depressed behaviors. The effect of MG on the depressed behaviors was evaluated using the tail-suspension test (TST) and the forced swimming test (FST). In both tests, RS-induced immobilized behaviors were significantly reversed in MG and fluoxetine administered groups. Taken together, MG significantly attenuated the RS-induced BDW loss, hypoglycemia, and depressed behaviors. Considering that decreased BDG levels (hypoglycemia) can cause depression, MG may exert its anti-depressant like effect by preventing hypoglycemia. Our results suggest that MG isolated from A. barbinerve can exert anti-depressant like effect, and could be used as a new and natural anti-depressant therapy.
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Affiliation(s)
- Jin-Koo Lee
- Department of Pharmacology, College of Medicine, Dankook University, Cheonan 330-714, Korea
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Ondondo B, Jones E, Godkin A, Gallimore A. Home sweet home: the tumor microenvironment as a haven for regulatory T cells. Front Immunol 2013; 4:197. [PMID: 23874342 PMCID: PMC3712544 DOI: 10.3389/fimmu.2013.00197] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 07/03/2013] [Indexed: 01/28/2023] Open
Abstract
CD4+Foxp3+ regulatory T cells (Tregs) have a fundamental role in maintaining immune balance by preventing autoreactivity and immune-mediated pathology. However this role of Tregs extends to suppression of anti-tumor immune responses and remains a major obstacle in the development of anti-cancer vaccines and immunotherapies. This feature of Treg activity is exacerbated by the discovery that Treg frequencies are not only elevated in the blood of cancer patients, but are also significantly enriched within tumors in comparison to other sites. These observations have sparked off the quest to understand the processes through which Tregs become elevated in cancer-bearing hosts and to identify the specific mechanisms leading to their accumulation within the tumor microenvironment. This manuscript reviews the evidence for specific mechanisms of intra-tumoral Treg enrichment and will discuss how this information may be utilized for the purpose of manipulating the balance of tumor-infiltrating T cells in favor of anti-tumor effector cells.
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Affiliation(s)
- Beatrice Ondondo
- Nuffield Department of Medicine, The Jenner Institute (ORCRB), University of Oxford , Oxford , UK
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Lee SH, Kim JK, Kim DW, Hwang HS, Eum WS, Park J, Han KH, Oh JS, Choi SY. Antitumor activity of methyl gallate by inhibition of focal adhesion formation and Akt phosphorylation in glioma cells. Biochim Biophys Acta Gen Subj 2013; 1830:4017-29. [PMID: 23562553 DOI: 10.1016/j.bbagen.2013.03.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 03/05/2013] [Accepted: 03/27/2013] [Indexed: 01/09/2023]
Abstract
BACKGROUND Methyl gallate (MG) possesses a wide range of biological properties that include anti-oxidant, anti-inflammatory, and anti-microbial activities. However, its anti-tumor activity has not been extensively examined in cancer cells. Thus, we examined the effect of MG in both glutamate-induced rat C6 and human U373 glioma cell proliferation and migration. METHODS MG was isolated from the stem bark of Acer barbinerve. Cell viability and migration were analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and scratch wound-healing assay, respectively. Focal adhesion formation was detected with immunofluorescence. RESULTS Treatment of C6 and U373 glioma cells with MG significantly reduced cell viability, migration, and Akt phosphorylation level. Glutamate stimulation markedly increased the level of ERK1/2 phosphorylation. However, cells treated with MG displayed decreased ERK1/2 phosphorylation. Inhibition of ERK1/2 by MG or MEK1/2 inhibitor significantly inhibited paxillin phosphorylation at Ser(83) and focal adhesion turn-over produced inefficient glioma cell migration. In addition, activation of Akt and ERK1/2 upon glutamate stimulation was independently regulated by Ca(2+) and protein kinase C activity, respectively, via the α-amino-3-hydroxy-5-methy-4-isoxazolepropionate acid glutamate receptor and metabotropic glutamate receptor. GENERAL SIGNIFICANCE Our results clearly indicate that MG has a strong anti-tumor effect through the down-regulation of the Akt and ERK1/2 signaling pathways. Thus, methyl gallate is a potent anti-tumor and novel therapeutic agent for glioma.
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Affiliation(s)
- Sang-Hyun Lee
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, Republic of Korea
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Crane CA, Ahn BJ, Han SJ, Parsa AT. Soluble factors secreted by glioblastoma cell lines facilitate recruitment, survival, and expansion of regulatory T cells: implications for immunotherapy. Neuro Oncol 2012; 14:584-95. [PMID: 22406925 DOI: 10.1093/neuonc/nos014] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In patients with glioma, the tumor microenvironment can significantly impact pro-inflammatory immune cell functions. However, the mechanisms by which this occurs are poorly defined. Because immunosuppressive regulatory T cells (Treg) are over represented in the tumor microenvironment compared with peripheral blood, we hypothesized that the tumor may have an effect on Treg survival, migration, expansion, and/or induction of a regulatory phenotype from non-Treg conventional CD4+ T cells. We defined the impact of soluble factors produced by tumor cells on Treg from healthy patients in vitro to determine mechanisms by which gliomas influence T cell populations. We found that tumor-derived soluble factors allowed for preferential proliferation and increased chemotaxis of Treg, compared with conventional T cells, indicating that these mechanisms may contribute to the increased Treg in the tumor microenvironment. Conventional T cells also exhibited a significantly increased expression of pro-apoptotic transcripts in the presence of tumor-derived factors, indicating that survival of Treg in the tumor site is driven by exposure to soluble factors produced by the tumor. Together, these data suggest that tumor burden may induce increased Treg infiltration, proliferation, and survival, negating productive anti-tumor immune responses in patients treated with immunotherapies. Collectively, our data indicate that several mechanisms of Treg recruitment and retention in the tumor microenvironment exist and may need to be addressed to improve the specificity of immunotherapies seeking to eliminate Treg in patients with glioma.
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Affiliation(s)
- Courtney A Crane
- Brain Tumor Research Center, Department of Neurological Surgery, Comprehensive Cancer Center, University of California, San Francisco, California 94143, USA
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Abstract
Infiltration of tumors by regulatory T cells confers growth and metastatic advantages by inhibiting antitumor immunity and by production of receptor activator of NF-κB (RANK) ligand, which may directly stimulate metastatic propagation of RANK-expressing cancer cells. Modulation of regulatory T cells can enhance the efficacy of cancer immunotherapy. Strategies include depletion, interference with function, inhibition of tumoral migration, and exploitation of T-cell plasticity. Problems with these strategies include a lack of specificity, resulting in depletion of antitumor effector T cells or global interruption of regulatory T cells, which may predispose to autoimmune diseases. Emerging technologies, such as RNA interference and tetramer-based targeting, may have the potential to improve selectivity and efficacy.
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Affiliation(s)
- William L Byrne
- Cork Cancer Research Centre, Mercy University Hospital and Leslie C. Quick Jnr. Laboratory, University College Cork, Cork, Ireland
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Park PH, Hur J, Kim YC, An RB, Sohn DH. Involvement of heme oxygenase-1 induction in inhibitory effect of ethyl gallate isolated from Galla Rhois on nitric oxide production in RAW 264.7 macrophages. Arch Pharm Res 2011; 34:1545-52. [DOI: 10.1007/s12272-011-0917-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 04/14/2011] [Accepted: 04/22/2011] [Indexed: 02/04/2023]
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