1
|
Guo Y, Wang M, Wu Z, Shi Y, Wang Y, Zhang S, Jin B, Cui S, Zhao G. Ultrafast non-adiabatic dynamics of stilbene-based plant-derived sunscreens with cis-trans isomerization structures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 298:122759. [PMID: 37119635 DOI: 10.1016/j.saa.2023.122759] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/09/2023] [Accepted: 04/15/2023] [Indexed: 05/26/2023]
Abstract
In this work, we investigated the potential UV protection mechanism of the natural compounds hydroxy resveratrol and pterostilbene by combining theoretical calculations and femtosecond transient absorption spectra (FTAS). The UV absorption spectra showed that the two compounds exhibited strong absorption properties and high photostability. We found two molecules will reach the S1 state or an even higher excited state after UV exposure and molecules in S1 will cross a lower energy barrier to reach the conical intersection. The adiabatic trans-cis isomerization process happened and finally return to the ground. Meanwhile, FTAS clarified the time scale of trans-cis isomerization of two molecules was ∼ 10 ps, which also met the requirement of fast energy relaxation. This work also provides theoretical guidance for developing new sunscreen molecules from natural stilbene.
Collapse
Affiliation(s)
- Yurong Guo
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Mengqi Wang
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Zibo Wu
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Yanan Shi
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Ye Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Song Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Bing Jin
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Shen Cui
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Guangjiu Zhao
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China.
| |
Collapse
|
2
|
Likhitwitayawuid K. Oxyresveratrol: Sources, Productions, Biological Activities, Pharmacokinetics, and Delivery Systems. Molecules 2021; 26:4212. [PMID: 34299485 PMCID: PMC8307110 DOI: 10.3390/molecules26144212] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
Oxyresveratrol has recently attracted much research attention due to its simple chemical structure and diverse therapeutic potentials. Previous reviews describe the chemistry and biological activities of this phytoalexin, but additional coverage and greater accessibility are still needed. The current review provides a more comprehensive summary, covering research from 1955 to the present year. Oxyresveratrol occurs in both gymnosperms and angiosperms. However, it has never been reported in plants in the subclass Sympetalae, and this point might be of both chemotaxonomic and biosynthetic importance. Oxyresveratrol can be easily obtained from plant materials by conventional methods, and several systems for both qualitative and quantitative analysis of oxyresveratrol contents in plant materials and plant products are available. Oxyresveratrol possesses diverse biological and pharmacological activities such as the inhibition of tyrosinase and melanogenesis, antioxidant and anti-inflammatory activities, and protective effects against neurological disorders and digestive ailments. However, the unfavorable pharmacokinetic properties of oxyresveratrol, including low water solubility and poor oral availability and stability, have posed challenges to its development as a useful therapeutic agent. Recently, several delivery systems have emerged, with promising outcomes that may improve chances for the clinical study of oxyresveratrol.
Collapse
Affiliation(s)
- Kittisak Likhitwitayawuid
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| |
Collapse
|
3
|
Lim YRI, Preshaw PM, Lin H, Tan KS. Resveratrol and Its Analogs as Functional Foods in Periodontal Disease Management. FRONTIERS IN DENTAL MEDICINE 2021. [DOI: 10.3389/fdmed.2021.636423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Periodontitis is a common chronic inflammatory disease driven by the interaction between a dysbiotic oral microbiome and the dysregulated host immune-inflammatory response. Naturally derived nutraceuticals, such as resveratrol and its analogs, are potential adjunctive therapies in periodontal treatment due to their antimicrobial and anti-inflammatory properties. Furthermore, different analogs of resveratrol and the choice of solvents used may lead to varying effects on therapeutic properties. This review presents the current findings and gaps in our understanding on the potential utility of resveratrol and its analogs in periodontal treatment.
Collapse
|
4
|
Songoen W, Phanchai W, Brecker L, Wenisch D, Jakupec MA, Pluempanupat W, Schinnerl J. Highly Aromatic Flavan-3-ol Derivatives from Palaeotropical Artocarpus lacucha Buch.-Ham Possess Radical Scavenging and Antiproliferative Properties. Molecules 2021; 26:molecules26041078. [PMID: 33670764 PMCID: PMC7922997 DOI: 10.3390/molecules26041078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/12/2021] [Accepted: 02/16/2021] [Indexed: 12/26/2022] Open
Abstract
Phytochemical investigation of leaves and stembark of Artocarpus lacucha collected in Thailand resulted in three yet undescribed isomeric flavan-3-ol derivatives (1–3), the four known compounds gambircatechol (4), (+)-catechin (5), (+)-afzelechin (6) and the stilbene oxyresveratrol (7). Compounds 1 to 3 feature 6/6/5/6/5/6 core structures. All structures were deduced by NMR and MS, while density functional theory (DFT) calculations on B3LYP theory level were performed of compounds 1 to 3 to support the stereochemistry in positions 2 and 3 in the C-ring. Possible biosynthetic pathways leading to 4 are discussed. The DPPH assay revealed high radical scavenging activities for 1 (EC50 = 9.4 ± 1.0 µmol mL−1), 2 (12.2 ± 1.1), 3 (10.0 ± 1.5) and 4 (19.0 ± 2.6), remarkably lower than ascorbic acid (EC50 = 34.9) and α-tocopherol (EC50 = 48.6). A cytotoxicity assay revealed moderate but consistent antiproliferative properties of 1 in CH1/PA-1 (ovarian teratocarcinoma) and SW480 (colon carcinoma) cells, with IC50 values of 25 ± 6 and 34 ± 4 µM, respectively, whereas effects in A549 (non-small cell lung cancer) cells were rather negligible. The performed DCFH-DA assay of 1 in the former cell lines confirmed potent antioxidative effects even in the cellular environment.
Collapse
Affiliation(s)
- Weerasak Songoen
- Special Research Unit for Advanced Magnetic Resonance, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
- Department of Organic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria;
| | - Witthawat Phanchai
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Lothar Brecker
- Department of Organic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria;
| | - Dominik Wenisch
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria; (D.W.); (M.A.J.)
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria; (D.W.); (M.A.J.)
| | - Wanchai Pluempanupat
- Special Research Unit for Advanced Magnetic Resonance, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
- Correspondence: (W.P.); (J.S.)
| | - Johann Schinnerl
- Department of Botany and Biodiversity Research, Faculty of Life Science, University of Vienna, Rennweg 14, A-1030 Vienna, Austria
- Correspondence: (W.P.); (J.S.)
| |
Collapse
|
5
|
Qian WD, Huang J, Zhang JN, Li XC, Kong Y, Wang T, Li YD. Antimicrobial and Antibiofilm Activities and Mechanism of Action of Chelerythrine Against Carbapenem-Resistant Serratia marcescens In Vitro. Microb Drug Resist 2021; 27:1105-1116. [PMID: 33439767 DOI: 10.1089/mdr.2020.0207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Aim: To evaluate the antimicrobial and antibiofilm effects of chelerythrine (CHE) against carbapenem-resistant Serratia marcescens (CRSM). Materials and Methods: The minimum inhibitory concentration (MIC) of CHE against CRSM was determined using the agar dilution method. Changes in intracellular adenosine triphosphate (ATP) concentration, intracellular pH, cell membrane potential, and cell membrane integrity were investigated to assess the influence of CHE on the cell membrane. The effects of CHE on cell morphology were observed by field emission scanning electron microscopy (FESEM) and transmission electron microscopy. The antibiofilm formation of CHE was measured by crystal violet staining and visualized with confocal laser scanning microscopy (CLSM) and FESEM. The influence of CHE on biofilm components was further investigated using CLSM specific combined with double-dyeing methods. Results: Our results showed that CHE had an MIC at 125 μg/mL against CRSM was capable of inhibiting the growth of CRSM and destroying its cell membrane integrity, as well as obviously changing the cell morphology. Sub-MIC CHE displayed robust inhibitory effects against CRSM biofilm formation by mediating the production of biofilm components. In addition, CLSM- and FESEM-mediated evaluation of the damage of biofilm cells and biofilm persistence revealed that at high concentrations, CHE could compromise the cells within biofilms and remove preformed biofilms. Conclusion: CHE shows promise as a natural antimicrobial substance against biofilm-positive CRSM, with the potential to serve as an alternative therapeutic agent.
Collapse
Affiliation(s)
- Wei-Dong Qian
- Department of Pharmacy, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, P.R. China
| | - Jie Huang
- Department of Pharmacy, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, P.R. China
| | - Jia-Ning Zhang
- Department of Pharmacy, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, P.R. China
| | - Xin-Cheng Li
- Department of Pharmacy, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, P.R. China
| | - Yi Kong
- Department of Clinical Laboratory Medicine, Jining First Peoples' Hospital, Jining, P.R. China
| | - Ting Wang
- Department of Pharmacy, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, P.R. China
| | - Yong-Dong Li
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, P.R. China
| |
Collapse
|
6
|
Li QQ, Luo J, Liu XQ, Kwon DY, Kang OH. Eleutheroside K isolated from Acanthopanax henryi (Oliv.) Harms suppresses methicillin resistance of Staphylococcus aureus. Lett Appl Microbiol 2020; 72:669-676. [PMID: 32955753 DOI: 10.1111/lam.13389] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 08/03/2020] [Accepted: 09/10/2020] [Indexed: 01/03/2023]
Abstract
Acanthopanax (A.) henryi (Oliv.) Harms contain many bioactive compounds commonly used in traditional Chinese medicine. The objective of the present study was to investigate the antibacterial activity of the single constituent, Eleutheroside K (ETSK) isolated from the leaves of A. henryi (Oliv.) Harms, against methicillin-resistant Staphylococcus (S.) aureus (MRSA). Broth microdilution assay was used to measure the minimal inhibitory concentration (MIC) and the MIC values of ETSK against eight clinical S. aureus strains were all 50 µg ml-1 . At sub-inhibitory concentrations, a synergistic effect between oxacillin (OXA) and ETSK was confirmed using checkerboard dilution assay and time-kill curve analysis. The bacteriostatic effect became more pronounced when ETSK was used in combination with detergent (Triton X-100) or ATPase inhibitor (N, N'-dicyclohexylcarbodiimide). According to western blot analysis, the down-regulated expression of Penicillin-binding protein 2a (PBP2a) further validated that the bacterial activity was inhibited when treated with ETSK in a dose-dependent manner. Results based on our study verified that ETSK significantly suppressed MRSA infections and emphasized the potential application of ETSK as a novel anti-MRSA natural drug.
Collapse
Affiliation(s)
- Q-Q Li
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang Oriental Medicines Research Institute, Wonkwang University, Jeonbuk, Korea
| | - J Luo
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, P.R. China
| | - X-Q Liu
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, P.R. China
| | - D-Y Kwon
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang Oriental Medicines Research Institute, Wonkwang University, Jeonbuk, Korea
| | - O-H Kang
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang Oriental Medicines Research Institute, Wonkwang University, Jeonbuk, Korea
| |
Collapse
|
7
|
Oliveira-Júnior JB, da Silva EM, Veras DL, Ribeiro KRC, de Freitas CF, de Lima FCG, Gutierrez SJC, Camara CA, Barbosa-Filho JM, Alves LC, Brayner FA. Antimicrobial activity and biofilm inhibition of riparins I, II and III and ultrastructural changes in multidrug-resistant bacteria of medical importance. Microb Pathog 2020; 149:104529. [PMID: 33010367 DOI: 10.1016/j.micpath.2020.104529] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 10/23/2022]
Abstract
Natural products have been used to treat various infections; however, the development of antimicrobials has made natural products in disuse. Riparin I, II and III are natural alkamide isolated from Aniba riparia (Ness) Mez (Lauraceae), that exhibit economic importance and it is used in traditional medicine, and popularly known as "louro". This study investigated the cytotoxicity, antimicrobial and antibiofilm activity, and ultrastructural changes in vitro by riparins I, II and III in Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa. We analyzed the cytotoxicity by MTT assay in Vero cells and hemolytic action verified in human erythrocytes. The antimicrobial activity was determined by microdilution in broth against ATCC strains, identifying the susceptible species. Subsequently, only the MDR isolates of sensitive bacterial species were evaluated regarding its biofilm formation and ultrastructural changes. Riparin I presented low cytotoxicity and hemolytic percentage ranging from of 9.01%-12.97%. Only the riparin III that showed antimicrobial activity against MDR clinical isolates, and significant reduction in biofilm formation in S. aureus. Moreover, the riparin III promoted ultrastructural changes in bacterial cells, such as elongated cellular without bacterial septum, cells with a rugged appearance on the cell surface and cytoplasmic material extravasation. As has been noted riparin III has an inhibitory potential against biofilm formation in S. aureus, besides having antimicrobial activity and promoting ultrastructural changes in MDR clinical isolates. Thus, riparin III is an interesting alternative for further studies aiming to develop new therapeutic options.
Collapse
Affiliation(s)
- Jorge Belém Oliveira-Júnior
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil.
| | - Everton Morais da Silva
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil
| | - Dyana Leal Veras
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil
| | - Karla Raíza Cardoso Ribeiro
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil
| | - Catarina Fernandes de Freitas
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil
| | - Fernanda Cristina Gomes de Lima
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil
| | - Stanley Juan Chavez Gutierrez
- Pharmacy Course Coordination, Federal University of Piauí (Campus Universitário Ministro Petrônio Portela, SG-8 - Bairro Ininga, Teresina, PI, 64049-550, Brazil
| | - Celso Amorim Camara
- Department of Chemistry, Rural Federal University of Pernambuco (Rua Dom Manuel de Medeiros, S/n - Dois Irmãos, Recife, PE, 52171-900, Brazil
| | - José Maria Barbosa-Filho
- Laboratory of Pharmaceutical Technology, Federal University of Paraíba (Campus I - Lot. Cidade Universitária, João Pessoa, PB, 58051-900, Brazil
| | - Luiz Carlos Alves
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil; Electronic Microscopy, Laboratory of Immunopathology Keizo Asami, Federal University of Pernambuco (Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Fábio André Brayner
- Laboratory of Molecular and Cellular Biology, Department of Parasitology, Institute Aggeu Magalhães - FIOCRUZ/PE (Av. Prof. Moraes Rego, S/n - Cidade Universitária, Recife/PE, 50670-420, Brazil; Electronic Microscopy, Laboratory of Immunopathology Keizo Asami, Federal University of Pernambuco (Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, 50670-901, Brazil
| |
Collapse
|
8
|
Zhang Q, Lyu Y, Huang J, Zhang X, Yu N, Wen Z, Chen S. Antibacterial activity and mechanism of sanguinarine against Providencia rettgeri in vitro. PeerJ 2020; 8:e9543. [PMID: 32864203 PMCID: PMC7427548 DOI: 10.7717/peerj.9543] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 06/24/2020] [Indexed: 01/01/2023] Open
Abstract
Background Sanguinarine (SAG), a benzophenanthridine alkaloid, occurs in Papaveraceas, Berberidaceae and Ranunculaceae families. Studies have found that SAG has antioxidant, anti-inflammatory, and antiproliferative activities in several malignancies and that it exhibits robust antibacterial activities. However, information reported on the action of SAG against Providencia rettgeri is limited in the literature. Therefore, the present study aimed to evaluate the antimicrobial and antibiofilm activities of SAG against P. rettgeri in vitro. Methods The agar dilution method was used to determine the minimum inhibitory concentration (MIC) of SAG against P. rettgeri. The intracellular ATP concentration, intracellular pH (pHin), and cell membrane integrity and potential were measured. Confocal laser scanning microscopy (CLSM), field emission scanning electron microscopy (FESEM), and crystal violet staining were used to measure the antibiofilm formation of SAG. Results The MIC of SAG against P. rettgeri was 7.8 μg/mL. SAG inhibited the growth of P. rettgeri and destroyed the integrity of P. rettgeri cell membrane, as reflected mainly through the decreases in the intracellular ATP concentration, pHin and cell membrane potential and significant changes in cellular morphology. The findings of CLSM, FESEM and crystal violet staining indicated that SAG exhibited strong inhibitory effects on the biofilm formation of P. rettgeri and led to the inactivity of biofilm-related P. rettgeri cells.
Collapse
Affiliation(s)
- Qian Zhang
- Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, China.,College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China.,Shenzhen University Health Science Center, Shenzhen, China.,Department of Dermatology, PLAGH Hainan Hospital Of PLA General Hospital, Sanya, China
| | - Yansi Lyu
- Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, China
| | - Jingkai Huang
- Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, China
| | - Xiaodong Zhang
- Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, China
| | - Na Yu
- Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, China
| | - Ziping Wen
- Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, China
| | - Si Chen
- Shenzhen University Health Science Center, Shenzhen, China.,Department of Immunology, Shenzhen University School of Medicine, Shenzhen, China
| |
Collapse
|
9
|
Smailagić A, Ristivojević P, Dimkić I, Pavlović T, Dabić Zagorac D, Veljović S, Fotirić Akšić M, Meland M, Natić M. Radical Scavenging and Antimicrobial Properties of Polyphenol Rich Waste Wood Extracts. Foods 2020; 9:foods9030319. [PMID: 32164204 PMCID: PMC7143368 DOI: 10.3390/foods9030319] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 02/25/2020] [Accepted: 03/02/2020] [Indexed: 01/20/2023] Open
Abstract
The main focus of this study is to assess radical scavenging and antimicrobial activities of the 11 wood extracts: oak (Quercus petraea (Matt.) Liebl., Q. robur L., and Q. cerris L.), mulberry (Morusalba L.), myrobalan plum (Prunuscerasifera Ehrh.), black locust (Robinia pseudoacacia L.), and wild cherry (Prunus avium L.). High-performance thin-layer chromatography (HPTLC) provided initial phenolic screening and revealed different chemical patterns among investigated wood extracts. To identify individual compounds with radical scavenging activity DPPH-HPTLC, assay was applied. Gallic acid, ferulic and/or caffeic acids were identified as the compounds with the highest contribution of total radical scavenging activity. Principal component analysis was applied on the data set obtained from HPTLC chromatogram to classify samples based on chemical fingerprints: Quercus spp. formed separate clusters from the other wood samples. The wood extracts were evaluated for their antimicrobial activity against eight representative human and opportunistic pathogens. The lowest minimum inhibitory concentration (MIC) was recorded against Staphylococcus aureus for black locust, cherry and mulberry wood extracts. This work provided simple, low-cost and high-throughput screening of phenolic compounds and assessments of the radical scavenging properties of selected individual metabolites from natural matrix that contributed to scavenge free radicals.
Collapse
Affiliation(s)
- Anita Smailagić
- Innovation Center of the Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia; (A.S.); (D.D.Z.)
| | - Petar Ristivojević
- Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia;
| | - Ivica Dimkić
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia; (I.D.); (T.P.)
| | - Tamara Pavlović
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia; (I.D.); (T.P.)
| | - Dragana Dabić Zagorac
- Innovation Center of the Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia; (A.S.); (D.D.Z.)
| | - Sonja Veljović
- Institute of General and Physical Chemistry, University of Belgrade P.O. Box 551, 11001 Belgrade, Serbia;
| | | | - Mekjell Meland
- Norwegian Institute of Bioeconomy Research-NIBIO Ullensvang, NO-5781 Lofthus, Norway;
| | - Maja Natić
- Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia;
- Correspondence:
| |
Collapse
|
10
|
Yeom J, Ma S, Lim YH. Oxyresveratrol Induces Autophagy via the ER Stress Signaling Pathway, and Oxyresveratrol-Induced Autophagy Stimulates MUC2 Synthesis in Human Goblet Cells. Antioxidants (Basel) 2020; 9:antiox9030214. [PMID: 32150901 PMCID: PMC7139292 DOI: 10.3390/antiox9030214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 02/07/2023] Open
Abstract
Background: Autophagy is a cell protection system invoked to eliminate the damaged organelles and misfolded proteins that induce various stresses, including endoplasmic reticulum (ER) stress. Autophagy can control mucin secretion in goblet cells. Oxyresveratrol (OXY), an antioxidant, stimulates expression of MUC2. Thus, we investigated the effect of OXY on autophagy and found that OXY-induced autophagy stimulates MUC2 expression in human intestinal goblet cells. Methods: Autophagy-related genes and proteins were examined by quantitative real-time PCR (qPCR) and Western blotting, respectively. Autophagy was assessed by immunocytochemistry (ICC). To analyze the protein expression profiles of OXY-treated LS 174T goblet cells, two-dimensional electrophoresis (2DE) and peptide mass fingerprinting (PMF) were performed. MUC2 expression in cells was evaluated by ICC. Results: OXY significantly increased the expression levels of genes related to autophagy induction, and activated phagosome elongation resulted in the formation of autophagosomes. OXY also activated the ER stress signaling pathway and promoted MUC2 synthesis, which was inhibited by treatment with an autophagy inhibitor. Conclusion: OXY induces autophagy via the ER stress signaling pathway, and OXY-induced autophagy increases MUC2 production in intestinal goblet cells.
Collapse
Affiliation(s)
- Jiah Yeom
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
| | - Seongho Ma
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
| | - Young-Hee Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
- Department of Public Health Sciences (Brain Korea 21 PLUS program), Graduate School, Korea University, Seoul 02841, Korea
- Department of Laboratory Medicine, Korea University Guro Hospital, Seoul 08308, Korea
- Correspondence: ; Tel.: +82-2-3290-5635
| |
Collapse
|
11
|
Liu CC, Lin MH. Involvement of Heme in Colony Spreading of Staphylococcus aureus. Front Microbiol 2020; 11:170. [PMID: 32117177 PMCID: PMC7026375 DOI: 10.3389/fmicb.2020.00170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/24/2020] [Indexed: 11/13/2022] Open
Abstract
Staphylococcus aureus spreads rapidly on the surface of soft agar medium. The spreading depends on the synthesis of biosurfactants, i.e., phenol soluble modulins (PSMs), which facilitate colony spreading of S. aureus. Our earlier study demonstrated that water accumulates in a colony is important to modulate colony spreading of S. aureus. The current study screened a transposon-based mutant library of S. aureus HG001 and obtained four non-spreading mutants with mutations in hemY and ctaA, which are involved in heme synthesis. The spreading ability of these mutants was restored when the mutants are transformed with a plasmid encoding hemY or ctaA, respectively. HemY mutants, which do not synthesize heme B, were able to spread on agar medium supplemented with hemin, a heme B derivative. By contrast, hemin supplementation did not rescue the spreading of the ctaA mutant, which lacks heme B and heme A, indicating that heme A is also critical for colony spreading. Moreover, mutations in hemY and ctaA had little effect on PSMs production but affect ATP production and water accumulation in the colony. In conclusion, this study sheds light on the role of heme synthesis and energy production in the regulation of S. aureus colony spreading, which is important for understanding the movement mechanisms of bacteria lacking a motor apparatus.
Collapse
Affiliation(s)
- Chao-Chin Liu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Hui Lin
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- *Correspondence: Mei-Hui Lin,
| |
Collapse
|
12
|
Wu J, Fan Y, Wang X, Jiang X, Zou J, Huang R. Effects of the natural compound, oxyresveratrol, on the growth of Streptococcus mutans, and on biofilm formation, acid production, and virulence gene expression. Eur J Oral Sci 2020; 128:18-26. [PMID: 31970819 DOI: 10.1111/eos.12667] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2019] [Indexed: 02/05/2023]
Abstract
Streptococcus mutans is one of the major pathogens of dental caries. Oxyresveratrol, a natural compound found in plants, exerts inhibitory effects on many bacterial species but its effect on S. mutans is unknown. The objective of this study was to clarify the antibacterial effect of oxyresveratrol on S. mutans, including effects on basic viability, acidogenicity, acidurity, and extracellular polysaccharide synthesis. The expression of nine genes that encode virulence and protective factors in S. mutans was measured by qRT-PCR. Oxyresveratrol showed a dose-dependent inhibitory effect on survival of S. mutans. At 250 μg ml-1 , oxyresveratrol reduced the S. mutans survival rate, inhibited synthesis of water-insoluble glucans, compromised biofilm formation, and significantly down-regulated the expression of glucosyltransferase-I (gtfB) and glucosyltransferase-SI (gtfC). However, the enzymatic activity of lactate dehydrogenase protein was increased and the expression of lactate dehydrogenase (ldh) and ATP synthase subunit beta (atpD) genes were also up-regulated. Besides, glucosyltransferase S (gtfD) up-regulation indicated that water-soluble glucan synthesis was promoted. The vicR, liaR, and comDE genes, which exert a self-protective function in response to external stress, were also up-regulated. In conclusion, oxyresveratrol inhibited the growth of S. mutans and also reduced biofilm formation, acid production, and synthesis of water-insoluble glucans by this organism. In addition, oxyresveratrol also activated a series of S. mutans self-protection mechanisms.
Collapse
Affiliation(s)
- Jiayi Wu
- Department of Pediatric Dentistry, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yu Fan
- Department of Pediatric Dentistry, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xinyue Wang
- Department of Pediatric Dentistry, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xiaoge Jiang
- Department of Pediatric Dentistry, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jing Zou
- Department of Pediatric Dentistry, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ruijie Huang
- Department of Pediatric Dentistry, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| |
Collapse
|
13
|
Hassan D, Omolo CA, Fasiku VO, Mocktar C, Govender T. Novel chitosan-based pH-responsive lipid-polymer hybrid nanovesicles (OLA-LPHVs) for delivery of vancomycin against methicillin-resistant Staphylococcus aureus infections. Int J Biol Macromol 2020; 147:385-398. [PMID: 31926237 DOI: 10.1016/j.ijbiomac.2020.01.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/18/2019] [Accepted: 01/03/2020] [Indexed: 10/25/2022]
Abstract
The development of novel materials is necessary for adequate delivery of drugs to combat the Methicillin-resistant Staphylococcus aureus (MRSA) burden due to the limitations of conventional methods and challenges associated with antimicrobial resistance. Hence, this study aimed to synthesise a novel oleylamine based zwitterionic lipid (OLA) and explore its potential to formulate chitosan-based pH-responsive lipid-polymer hybrid nanovesicles (VM-OLA-LPHVs1) to deliver VM against MRSA. The OLA was synthesised, and the structure characterised by 1H NMR, 13C NMR, FT-IR and HR-MS. The preliminary biocompatibility of OLA and VM-OLA-LPHVs1 was evaluated on HEK-293, A-549, MCF-7 and HepG-2 cell lines using in vitro cytotoxicity assay. The VM-OLA-LPHVs1 were formulated by ionic gelation method and characterised in order to determine the hydrodynamic diameter (DH), morphology in vitro and in vivo antibacterial efficacy. The result of the in vitro cytotoxicity study revealed cell viability of above 75% in all cell lines when exposed to OLA and VM-OLA-LPHVs1, thus indicating their biosafety. The VM-OLA-LPHVs1 had a DH, polydispersity index (PDI), and EE% of 198.0 ± 14.04 nm, 0.137 ± 0.02, and 45.61 ± 0.54% respectively at physiological pH, with surface-charge (ζ) switching from negative at pH 7.4 to positive at pH 6.0. The VM release from the VM-OLA-LPHVs1 was faster at pH 6.0 compared to physiological pH, with 97% release after 72-h. The VM-OLA-LPHVs1 had a lower minimum inhibitory concentration (MIC) value of 0.59 μg/mL at pH 6.0 compared to 2.39 μg/mL at pH 7.4, against MRSA with 52.9-fold antibacterial enhancement. The flow cytometry study revealed that VM-OLA-LPHVs1 had similar bactericidal efficacy on MRSA compared to bare VM, despite an 8-fold lower VM concentration in the nanovesicles. Additionally, fluorescence microscopy study showed the ability of the VM-OLA-LPHVs1 to eliminate biofilms. The electrical conductivity, and protein/DNA concentration, increased and decreased respectively, as compared to bare VM which indicated greater MRSA membrane damage. The in vivo studies in a BALB/c mouse-infected skin model treated with VM-OLA-LPHVs1 revealed 95-fold lower MRSA burden compared to the group treated with bare VM. These findings suggest that OLA can be used as an effective novel material for complexation with biodegradable polymer chitosan (CHs) to form pH-responsive VM-OLA-LPHVs1 nanovesicles which show greater potential for enhancement and improvement of treatment of bacterial infections.
Collapse
Affiliation(s)
- Daniel Hassan
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Calvin A Omolo
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa; United States International University-Africa, School of Pharmacy and Health Sciences, Department of Pharmaceutics, P. O. Box 14634-00800, Nairobi, Kenya.
| | - Victoria Oluwaseun Fasiku
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Private Bag X54001, Durban, South Africa.
| |
Collapse
|
14
|
Chang YW, Huang WC, Lin CY, Wang WH, Hung LC, Chen YH. Tellimagrandin II, A Type of Plant Polyphenol Extracted from Trapa bispinosa Inhibits Antibiotic Resistance of Drug-Resistant Staphylococcus aureus. Int J Mol Sci 2019; 20:ijms20225790. [PMID: 31752109 PMCID: PMC6888525 DOI: 10.3390/ijms20225790] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/09/2019] [Accepted: 11/13/2019] [Indexed: 01/25/2023] Open
Abstract
The emergence of methicillin-resistant Staphylococcus aureus (MRSA) has become a critical global concern. Identifying new candidates of anti-S. aureus agents is urgently required because the therapeutic strategies for infected patients are limited currently. Therefore, the present study investigated whether Tellimagrandin II (TGII), a pure compound extracted from the shells of Trapa bispinosa, exhibits antibacterial effects against MRSA. We first showed that TGII exerted potent inhibitory activity against MRSA with a minimum inhibitory concentration of 128 μg/mL. The obtained fractional inhibitory concentration suggested that TGII could alone exert antistaphylococcal activity, and TGII combined with low doses of antibiotics displayed synergistic effects against MRSA. Moreover, we found that TGII exerted bactericidal activity by reducing the expression of mecA followed by the negative regulation of the penicillin-binding protein 2a (PBP2a) of MRSA. Transmission electron microscopy (TEM) images further confirmed that TGII destroyed the integrity of the cell wall of MRSA and caused the loss of cytoplasm content. In conclusion, we evidenced the antibacterial effects of TGII against MRSA, which enables the effective dose of current antibiotics to be reduced and the predicament of drug-resistant S. aureus isolates to be overcome.
Collapse
Affiliation(s)
- Yu-Wei Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-W.C.); (C.-Y.L.)
- Department of Laboratory, Taitung Hospital, Ministry of Health and Welfare, Taitung 95043, Taiwan
| | - Wan-Chun Huang
- School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Center of Tropical Medicine and Infectious diseases, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-C.H.); (W.-H.W.); (L.-C.H.)
| | - Chun-Yu Lin
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-W.C.); (C.-Y.L.)
- School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Center of Tropical Medicine and Infectious diseases, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-C.H.); (W.-H.W.); (L.-C.H.)
- Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Wen-Hung Wang
- School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Center of Tropical Medicine and Infectious diseases, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-C.H.); (W.-H.W.); (L.-C.H.)
- Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Ling-Chien Hung
- School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Center of Tropical Medicine and Infectious diseases, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-C.H.); (W.-H.W.); (L.-C.H.)
- Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Yen-Hsu Chen
- School of Medicine, Graduate Institute of Medicine, Sepsis Research Center, Center of Tropical Medicine and Infectious diseases, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-C.H.); (W.-H.W.); (L.-C.H.)
- Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, HsinChu 30010, Taiwan
- Correspondence: ; Tel.: +886-7-312-1101 (ext. 5677)
| |
Collapse
|
15
|
Qian W, Fu Y, Liu M, Wang T, Zhang J, Yang M, Sun Z, Li X, Li Y. In Vitro Antibacterial Activity and Mechanism of Vanillic Acid against Carbapenem-Resistant Enterobacter cloacae. Antibiotics (Basel) 2019; 8:antibiotics8040220. [PMID: 31766130 PMCID: PMC6963763 DOI: 10.3390/antibiotics8040220] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/08/2019] [Accepted: 11/09/2019] [Indexed: 12/20/2022] Open
Abstract
Vanillic acid (VA) is a flavoring agent found in edible plants and fruits. Few recent studies exhibited robust antibacterial activity of VA against several pathogen microorganisms. However, little was reported about the effect of VA on carbapenem-resistant Enterobacter cloacae (CREC). The purpose of the current study was to assess in vitro antimicrobial and antibiofilm activities of VA against CREC. Here, minimum inhibitory concentrations (MIC) of VA against CREC was determined via gradient diffusion method. Furthermore, the antibacterial mode of VA against CREC was elucidated by measuring changes in intracellular adenosine triphosphate (ATP) concentration, intracellular pH (pHin), cell membrane potential and membrane integrity. In addition, antibiofilm formation of VA was measured by crystal violet assay and visualized with field emission scanning electron microscopy (FESEM) and confocal laser scanning microscopy (CLSM). The results showed that MIC of VA against E. cloacae was 600 μg/mL. VA was capable of inhibiting the growth of CREC and destroying the cell membrane integrity of CREC, as confirmed by the decrease of intracellular ATP concentration, pHin and membrane potential as well as distinctive variation in cellular morphology. Moreover, crystal violet staining, FESEM and CLSM results indicated that VA displayed robust inhibitory effects on biofilm formation of CREC and inactivated biofilm-related CREC cells. These findings revealed that VA exhibits potent antibacterial activity against CREC, and thus has potential to be exploited as a natural preservative to control the CREC associated infections.
Collapse
Affiliation(s)
- Weidong Qian
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
- Correspondence: (W.Q.); (T.W.); Tel.: +86-29-86168583 (W.Q. & T.W.)
| | - Yuting Fu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
| | - Miao Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
| | - Ting Wang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
- Correspondence: (W.Q.); (T.W.); Tel.: +86-29-86168583 (W.Q. & T.W.)
| | - Jianing Zhang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
| | - Min Yang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
| | - Zhaohuan Sun
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
| | - Xiang Li
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; (Y.F.); (M.L.); (J.Z.); (Z.S.); (X.L.)
| | - Yongdong Li
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China;
| |
Collapse
|
16
|
|
17
|
Zakova T, Rondevaldova J, Bernardos A, Landa P, Kokoska L. The relationship between structure and in vitro antistaphylococcal effect of plant-derived stilbenes. Acta Microbiol Immunol Hung 2018; 65:467-476. [PMID: 30203690 DOI: 10.1556/030.65.2018.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Staphylococcus aureus is a major human pathogen that is responsible for both hospital- and community-acquired infections. Stilbenes are polyphenol compounds of plant origin known to possess a variety of pharmacological properties, such as antibacterial, antiviral, and antifungal effects. This study reports the in vitro growth-inhibitory potential of eight naturally occurring stilbenes against six standard strains and two clinical isolates of S. aureus, using a broth microdilution method, and expressing the results as minimum inhibitory concentrations (MICs). Pterostilbene (MICs = 32-128 μg/ml), piceatannol (MICs = 64-256 μg/ml), and pinostilbene (MICs = 128 μg/ml) are among the active compounds that possess the strongest activity against all microorganisms tested, followed by 3'-hydroxypterostilbene, isorhapontigenin, oxyresveratrol, and rhapontigenin with MICs 128-256 μg/ml. Resveratrol (MIC = 256 μg/ml) exhibited only weak inhibitory effect. Furthermore, structure-activity relationships were studied. Hydroxyl groups at ortho-position (B-3' and -4') played crucial roles for the inhibitory effect of hydroxystilbene piceatannol. Compounds with methoxy groups at ring A (3'-hydroxypterostilbene, pinostilbene, and pterostilbene) produced stronger effect against S. aureus than their analogues (isorhapontigenin and rhapontigenin) with methoxy groups at ring B. These findings provide arguments for further investigation of stilbenes as prospective leading structures for development of novel antistaphylococcal agents for topical treatment of skin infections.
Collapse
Affiliation(s)
- Tereza Zakova
- 1 Faculty of Tropical AgriSciences, Department of Crop Sciences and Agroforestry, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Johana Rondevaldova
- 1 Faculty of Tropical AgriSciences, Department of Crop Sciences and Agroforestry, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Andrea Bernardos
- 2 Faculty of Agrobiology, Food and Natural Resources, Department of Quality of Agricultural Products, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Premysl Landa
- 3 Laboratory of Plant Biotechnologies, Institute of Experimental Botany AS CR, Prague, Czech Republic
| | - Ladislav Kokoska
- 1 Faculty of Tropical AgriSciences, Department of Crop Sciences and Agroforestry, Czech University of Life Sciences Prague, Prague, Czech Republic
| |
Collapse
|
18
|
Hwang D, Jo H, Ma SH, Lim YH. Oxyresveratrol stimulates mucin production in an NAD +-dependent manner in human intestinal goblet cells. Food Chem Toxicol 2018; 118:880-888. [PMID: 29935245 DOI: 10.1016/j.fct.2018.06.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/16/2018] [Accepted: 06/19/2018] [Indexed: 02/06/2023]
Abstract
The intestinal mucus layer plays an important role in the management of inflammatory bowel disease. The aim of this study was to investigate the effects of oxyresveratrol (OXY), an antioxidant, on the stimulation of mucin production in human LS 174T goblet cells and the underlying mechanism thereof. OXY increased MUC2 expression at both the mRNA and protein levels. By performing two-dimensional gel electrophoresis, we found that the expression of nicotinic acid phosphoribosyltransferase1 (NaPRT1) in OXY-treated LS 174T cells was greatly increased compared with that in negative control cells. In addition, the NAD+/NADH ratio was increased in proportion to OXY in LS 174T cells. The expression of NAD+-synthesis enzymes, NaPRT1, nicotinamide riboside kinase1 (NRK1) and nicotinamide mononucleotide adenylyltransferase1 (Nmnat1) was significantly increased at both the mRNA and protein levels in OXY-treated LS 174T cells. The inhibition of NaPRT1 and NRK1 did not decrease MUC2 expression after inhibiting by small interfering RNA (siRNA)-NaPRT1 and siRNA-NRK1, respectively; however, inhibition of Nmnat by an Nmnat inhibitor decreased MUC2 expression in a dose-dependent manner. In conclusion, OXY increases NAD+ levels, resulting in the stimulation of MUC2 expression in LS 174T cells. These findings present a novel role for NAD+ in stimulation of MUC2 expression.
Collapse
Affiliation(s)
- Dahyun Hwang
- Department of Biomedical Laboratory Science, College of Life and Health Sciences, Hoseo University, Asan, 31499, Republic of Korea
| | - HyunA Jo
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Seong-Ho Ma
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Young-Hee Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea; Department of Public Health Science (BK21 PLUS Program), Graduate School, Korea University, Seoul, 02841, Republic of Korea; Department of Laboratory Medicine, Korea University Guro Hospital, Seoul, 08308, Republic of Korea.
| |
Collapse
|
19
|
Kim S, Lee DG. Oxyresveratrol-induced DNA cleavage triggers apoptotic response in Candida albicans. MICROBIOLOGY-SGM 2018; 164:1112-1121. [PMID: 30024372 DOI: 10.1099/mic.0.000696] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Oxyresveratrol is a naturally occurring phytoalexin produced by plants in response to infection. Biological activities of oxyresveratrol have been studied such as antioxidant, anticancer and anti-inflammation. However, further antimicrobial activity and its mechanism need to be investigated. This study exhibited growth inhibition against pathogenic fungi and investigated its mode of action. Oxyresveratrol inflicted cleavage on DNA, leading to G2/M phase arrest. DNA damage by oxyresveratrol was not the result of oxidative stress but it was triggered by direct binding to DNA. Oxyresveratrol-treated cells showed an apoptotic pathway characterized by phosphatidylserine exposure, apoptotic volume decrease and metacaspase activation. Mitochondria-associated apoptotic features also appeared. Oxyresveratrol-induced Ca2+ overload led to mitochondrial membrane depolarization and release of cytochrome c from mitochondria to cytosol. In conclusion, oxyresveratrol with DNA-binding affinity induces DNA cleavage, and eventually leads to mitochondria-mediated apoptosis in Candida albicans.
Collapse
Affiliation(s)
- Suhyun Kim
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Dong Gun Lee
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Republic of Korea
| |
Collapse
|
20
|
Liu Y, Ren W, Bai Y, Wan L, Sun X, Liu Y, Xiong W, Zhang YY, Zhou L. Oxyresveratrol prevents murine H22 hepatocellular carcinoma growth and lymph node metastasis via inhibiting tumor angiogenesis and lymphangiogenesis. J Nat Med 2018; 72:481-492. [PMID: 29350326 DOI: 10.1007/s11418-018-1173-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/06/2018] [Indexed: 12/22/2022]
Abstract
The purpose of this study was to investigate the effects and mechanisms of oxyresveratrol (Oxyres) on hepatocellular carcinoma (HCC) in vitro and in vivo. The MTT and Transwell assays were performed to investigate the effects of Oxyres on cell proliferation and migration of two HCC cell lines, QGY-7701 and SMMC-7721 cells. H22 cells were subcutaneously injected into hind foot pads of 70 male mice to establish a lymph node metastasis model. These mice were randomly divided into seven groups as follows, control group, HCC group, Oxyres 20 mg/kg group, Oxyres 40 mg/kg group, Oxyres 60 mg/kg group, Resveratrol (Res) group, and Adriamycin (ADM) group. Oxyres, Res, and ADM were intraperitoneally injected daily for consecutive 21 days. Tumors and popliteal lymph node were isolated and embedded for histology analysis. Expressions of CD31 and vascular endothelial growth factor receptor-3 (VEGFR3) in tumors were detected by immunohistocehmistry. Expressions of vascular endothelial growth factor C (VEGF-C) were measured by Western blot. Oxyres significantly inhibited the proliferation and migration of QGY-7701 and SMMC-7721 cells. Oxyres significantly inhibited tumor growth (p < 0.001) and metastasis to sentinel lymph nodes (70%) in a dose-dependent manner. Oxyres showed a similar inhibition rate as Res. Oxyres also significantly decreased micro-blood vessel density and micro-lymphatic vessel density in tumors (p < 0.05). Expressions of CD31, VEGFR3, and VEGF-C of tumors were also inhibited by Oxyres (p < 0.05). Oxyres exerts anti-tumor effects against HCC through inhibiting both angiogenesis and lymph node metastasis, which suggests Oxyres be a potential therapeutic agent.
Collapse
Affiliation(s)
- Yuanqi Liu
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Wei Ren
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China.,Institute of Laboratory Animals, Sichuan Academy of Medical Sciences and Sichuan Provincial Peolpe's Hospital, Chengdu, Sichuan, People's Republic of China
| | - Yang Bai
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Lihong Wan
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiaodong Sun
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yin Liu
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Wenbi Xiong
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yuan-Yuan Zhang
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China.
| | - Liming Zhou
- Department of Pharmacology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, 3-17 Renmin South Road, Chengdu, 610041, Sichuan, People's Republic of China.
| |
Collapse
|
21
|
Lu HP, Jia YN, Peng YL, Yu Y, Sun SL, Yue MT, Pan MH, Zeng LS, Xu L. Oxyresveratrol, a Stilbene Compound from Morus alba L. Twig Extract Active Against Trichophyton rubrum. Phytother Res 2017; 31:1842-1848. [PMID: 29024160 DOI: 10.1002/ptr.5926] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/18/2017] [Accepted: 08/18/2017] [Indexed: 01/30/2023]
Abstract
Morus alba L. (mulberry) twig is known to have an inhibitory effect on pathogens in traditional Chinese medicine. In the present study, the dermophytic fungus, Trichophyton rubrum, was used to evaluate the inhibitory effect of total M. alba twig extract and extracts obtained using solvents with different polarities by the method of 96-well MTT colorimetry. The main active substance was isolated and identified by tracking its activity. In addition, the inhibitory effects of active extracts and a single active substance were investigated in combination with miconazole nitrate. Our data indicated that ethyl acetate extracts of mulberry twig (TEE) exhibited a desired inhibitory activity on T. rubrum with the minimum inhibitory concentration (MIC) of 1.000 mg/mL. With activity tracking, the main substance showing antimicrobial activity was oxyresveratrol (OXY), which was isolated from TEE. Its MIC for inhibiting the growth of T. rubrum was 0.500 mg/mL. The combined use of miconazole nitrate and OXY showed a synergistic inhibitory effect, as shown by a significant decrease in the MIC of both components. Based on the OXY content in TEE, the contribution rate of OXY to the inhibitory effect of TEE on T. rubrum was 80.52%, so it was determined to be the main antimicrobial substance in M. alba twig. Copyright © 2017 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Hai-Peng Lu
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - Ya-Nan Jia
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - Ya-Lin Peng
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - Yan Yu
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - Si-Long Sun
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - Meng-Ting Yue
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - Min-Hui Pan
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - Ling-Shu Zeng
- Institute of Sericulture Science and Technology Research, Chongqing, 400700, China
| | - Li Xu
- College of Biotechnology, Southwest University, Chongqing, 400715, China
| |
Collapse
|
22
|
Ungureanu A, Zlatian O, Mitroi G, Drocaş A, Ţîrcă T, Călina D, Dehelean C, Docea AO, Izotov BN, Rakitskii VN, Cioboată R, Spandidos DA, Tsatsakis AM, Găman A. Staphylococcus aureus colonisation in patients from a primary regional hospital. Mol Med Rep 2017; 16:8771-8780. [PMID: 29039613 PMCID: PMC5779955 DOI: 10.3892/mmr.2017.7746] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 09/19/2017] [Indexed: 11/24/2022] Open
Abstract
Staphylococcus aureus (SA or S. aureus) is a common pathogen that leads to local and systemic infections in communitarian and hospitalised patients. Staphylococcus colonizing nasal or pharyngeal sites can become virulent and cause severe infections. In this study, we collected 322 pharyngeal exudates and 142 nasal exudates from hospitalised and outpatients for screening purposes. The carriage rates in the pharynx were 27.06% for S. aureus, 11.55% for methicillin-resistant S. aureus (MRSA) and 5.61% for methicillin-oxacillin resistant S. aureus (MORSA). The carriage rates in the nose were 35.38% for S. aureus, 18.46% for MRSA and 13.85% for MORSA. The median multiple antibiotic resistance (MAR) index of SA was 33.33%. The MAR of MRSA was significantly higher than that of methicillin-susceptible strains (MSSA) (45.45% vs. 18.75%, P<0.0001) and the MAR of MORSA was 57.14%. Hierarchical clustering analysis revealed differences in the resistance of methicillin-sensitive, MRSA and MORSA strains. On the whole, our study demonstrates the pattern of distribution of nasal and pharyngeal colonisation with SA, MRSA and MORSA in adults vs. children, inpatients vs. outpatients, ICU patients vs. non-ICU patients, and females vs. males, which can be used for adjusting the screening and decontamination protocols in a hospital. SA is a pervasive pathogen with constantly changing trends in resistance and epidemiology and thus requires constant monitoring in healthcare facilities.
Collapse
Affiliation(s)
- Anca Ungureanu
- Department of Microbiology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Ovidiu Zlatian
- Department of Microbiology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - George Mitroi
- Department of Urology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Andrei Drocaş
- Department of Urology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Tiberiu Ţîrcă
- Department of Morphology, Dental Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Daniela Călina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Cristina Dehelean
- Department of Toxicology, University of Medicine and Pharmacy 'Victor Babeş' of Timişoara, 300041 Timişoara, Romania
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Boris N Izotov
- Department of Analytical Toxicology, Pharmaceutical Chemistry and Pharmacognosy, Sechenov University, 119991 Moscow, Russia
| | | | - Ramona Cioboată
- Department of Internal Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Aristides M Tsatsakis
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Alice Găman
- Department of Microbiology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| |
Collapse
|
23
|
Zhou T, Li Z, Kang OH, Mun SH, Seo YS, Kong R, Shin DW, Liu XQ, Kwon DY. Antimicrobial activity and synergism of ursolic acid 3-O-α-L-arabinopyranoside with oxacillin against methicillin-resistant Staphylococcus aureus. Int J Mol Med 2017; 40:1285-1293. [PMID: 28848992 DOI: 10.3892/ijmm.2017.3099] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 07/28/2017] [Indexed: 11/06/2022] Open
Abstract
The objective of the present study was to investigate the antibacterial activity of a single constituent, ursolic acid 3-O-α-L-arabinopyranoside (URS), isolated from the leaves of Acanthopanax henryi (Oliv.) Harms, alone and in combination with oxacillin (OXA) against methicillin-resistant Staphylococcus aureus (MRSA). A broth microdilution assay was used to determine the minimal inhibitory concentration (MIC). The synergistic effects of URS and OXA were determined using a checkerboard dilution test and time-kill curve assay. The mechanism of action of URS against MRSA was analyzed using a viability assay in the presence of a detergent and an ATPase inhibitor. Morphological changes in the URS-treated MRSA strains were evaluated via transmission electron microscopy (TEM). In addition, the producing penicillin-binding protein 2a (PBP2a) protein level was analyzed using western blotting. The MIC value of URS against MRSA was found to be 6.25 µg/ml and there was a partial synergistic effect between OXA and URS. The time-kill growth curves were suppressed by OXA combined with URS at a sub-inhibitory level. Compared to the optical density at 600 nm (OD600) value of URS alone (0.09 µg/ml), the OD600 values of the suspension in the presence of 0.09 µg/ml URS and 0.00001% Triton X-100 or 250 µg/ml N,N'-dicyclohexylcarbodiimide reduced by 56.6 and 85.9%, respectively. The TEM images of MRSA indicated damage to the cell wall, broken cell membranes and cell lysis following treatment with URS and OXA. Finally, an inhibitory effect on the expression of PBP2a protein was observed when cells were treated with URS and OXA compared with untreated controls. The present study suggested that URS was significantly active against MRSA infections and revealed the potential of URS as an effective natural antibiotic.
Collapse
Affiliation(s)
- Tian Zhou
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Institute of Biotechnology, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Zhi Li
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan 410-208, P.R. China
| | - Ok-Hwa Kang
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Institute of Biotechnology, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Su-Hyun Mun
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Institute of Biotechnology, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Yun-Soo Seo
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Institute of Biotechnology, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Ryong Kong
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Institute of Biotechnology, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Dong-Won Shin
- Department of Oriental Medicine Resources, College of Bio Industry Science, Sunchon National University, Sunchon, Jeonnam 540-742, Republic of Korea
| | - Xiang-Qian Liu
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan 410-208, P.R. China
| | - Dong-Yeul Kwon
- Department of Oriental Pharmacy, College of Pharmacy and Wonkwang-Oriental Medicines Research Institute, Institute of Biotechnology, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| |
Collapse
|
24
|
Jo H, Hwang D, Kim JK, Lim YH. Oxyresveratrol improves tight junction integrity through the PKC and MAPK signaling pathways in Caco-2 cells. Food Chem Toxicol 2017; 108:203-213. [PMID: 28780155 DOI: 10.1016/j.fct.2017.08.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 07/14/2017] [Accepted: 08/01/2017] [Indexed: 12/18/2022]
Abstract
Strengthening intestinal tight junctions (TJ) provides an effective barrier from the external environment and is important for recovery from inflammatory bowel disease. Oxyresveratrol (OXY), an isomer of hydroxylated resveratrol, is isolated from many plants. The aim of this study was to investigate the effect of OXY on intestinal TJ and to elucidate the mechanism underlying the OXY-mediated increase in TJ integrity in human intestinal Caco-2 cells. OXY-treated Caco-2 cell monolayers showed decreased monolayer permeability as evaluated by paracellular transport assay. The results showed that OXY significantly increased the levels of TJ-related genes and proteins (Claudin-1, Occludin and ZO-1) compared with those of the negative control. OXY activated protein kinase C (PKC) and increased expression levels of mitogen-activated protein kinase (MAPK) genes. OXY also increased gene and protein levels of the transcription factor Cdx-2. Expression levels of TJ, PKC and Cdx-2 proteins and transepithelial electrical resistance (TEER) value decreased in OXY-treated Caco-2 cells following treatment with a pan-PKC inhibitor compared with those of the untreated control. In conclusion, OXY strengthens the integrity of the intestinal TJ barrier via activation of the PKC and MAPK pathways.
Collapse
Affiliation(s)
- HyunA Jo
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 136-701, Republic of Korea
| | - Dahyun Hwang
- Department of Biomedical Laboratory Science, College of Life and Health Sciences, Hoseo University, Asan 31499, Republic of Korea
| | - Jeong-Keun Kim
- Department of Chemical Engineering and Biotechnology, Korea Polytechnic University, Shihung-si, Gyeonggi-do 429-793, Republic of Korea
| | - Young-Hee Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 136-701, Republic of Korea; Department of Public Health Science (Brain Korea 21 PLUS Program), Graduate School, Korea University, Seoul 136-701, Republic of Korea; Department of Laboratory Medicine, Korea University Guro Hospital, Seoul 152-703, Republic of Korea.
| |
Collapse
|