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Wei T, Regeard C, Barroca-Aubry N, Roger P, Aymes-Chodur C. Chemoenzymatic oxidation of citronellol and geraniol: Synthesis and antibacterial activity assessment. Colloids Surf B Biointerfaces 2025; 253:114723. [PMID: 40347662 DOI: 10.1016/j.colsurfb.2025.114723] [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: 10/09/2024] [Revised: 04/15/2025] [Accepted: 04/17/2025] [Indexed: 05/14/2025]
Abstract
Essential oils (EOs) are potential bio-sourced candidates to be grafted on polymer surfaces to fight against bacterial infections by either restricting the growth of bacteria (bacteriostatic effect) or killing bacterial cells (bactericidal effect). This paper deals with the modification of terpenoid molecules intended to be later grafted on polymer-plasma-activated surfaces. Citronellol (CT) and geraniol (GR) were chosen for their antimicrobial activity and were successfully modified to obtain better reactive function towards polymer grafting. They were transformed into CT-oxide (CT-ox) and GR-oxide (GR-ox) through an accessible and green chemo enzymatic oxidation method. Microbiological tests were undertaken to estimate the antibacterial effects of CT and GR before and after modification. Three bacterial species have been used: Escherichia coli (E. coli, diderm Gram-negative), Staphylococcus aureus (S. aureus, monoderm Gram-positive), and Corynebacterium glutamicum (C. glutamicum, diderm Gram-positive). The results showed that antibacterial effects remained after epoxidation: tested molecules exhibited different impacts on the three bacterial strains. The tested molecules exhibited antibacterial activities by targeting bacterial cell envelopes, disrupting membrane integrity, and altering hydrophobicity. These actions led to the inhibition of bacterial growth or death of the bacteria, as evidenced by Zeta Potential (ZP) measurements, Scanning Electron Microscopy (SEM) imaging, and surface energy assessments. Our study conclusively confirmed the antibacterial effectiveness of CT-ox and GR-ox.
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Affiliation(s)
- Tianyue Wei
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Orsay 91405, France; Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, Gif-sur-Yvette 91198, France
| | - Christophe Regeard
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, Gif-sur-Yvette 91198, France.
| | - Nadine Barroca-Aubry
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Orsay 91405, France
| | - Philippe Roger
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Orsay 91405, France.
| | - Caroline Aymes-Chodur
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Orsay 91405, France.
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Younes KM, Abouzied AS, Alafnan A, Huwaimel B, Khojali WMA, Alzahrani RM. Investigating the bispecific lead compounds against methicillin-resistant Staphylococcus aureus SarA and CrtM using machine learning and molecular dynamics approach. J Biomol Struct Dyn 2025; 43:3348-3365. [PMID: 38147401 DOI: 10.1080/07391102.2023.2297012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 12/14/2023] [Indexed: 12/28/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a notorious pathogen that has emerged as a serious global health concern over the past few decades. Staphylococcal accessory regulator A (SarA) and 4,4'-diapophytoene synthase (CrtM) play a crucial role in biofilm formation and staphyloxanthin biosynthesis. Thus, the present study used a machine learning-based QSAR model to screen 1261 plant-derived natural organic compounds in order to identify a medication candidate with both biofilm and virulence inhibitory potential. Additionally, the in-silico molecular docking analysis has demonstrated significant binding efficacy of the identified hit compound, that is 85137543, with SarA and CrtM when compared to the control compound, hesperidin. Post-MD simulation analysis of the complexes depicted strong binding of 85137543 to both SarA and CrtM. Moreover, 85137543 showed hydrogen bonding with the key residues of both proteins during docking (ALA138 of SarA and ALA134 of CrtM) and post-MD simulation (LYS273 of CrtM and ASN212 of SarA). The RMSD of 85137543 was stable and consistent when bound to both CrtM and SarA with RMSDs of 1.3 and 1 nm, respectively. In addition, principal component analysis and the free energy landscape showed stable complex formation with both proteins. Low binding free energy (ΔGTotal) was observed by 85137543 for SarA (-47.92 kcal/mol) and CrtM (-36.43 kcal/mol), which showed strong binding. Overall, this study identified 85137543 as a potential inhibitor of both SarA and CrtM in MRSA.
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Affiliation(s)
- Kareem M Younes
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail, Saudi Arabia
- Department of Analytical Chemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Amr S Abouzied
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail, Saudi Arabia
- Department of Pharmaceutical Chemistry, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
| | - Ahmed Alafnan
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Bader Huwaimel
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail, Saudi Arabia
- Medical and Diagnostic Research Center, University of Ha'il, Hail, Saudi Arabia
| | - Weam M A Khojali
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail, Saudi Arabia
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Omdurman Islamic University, Omdurman, Sudan
| | - Rami M Alzahrani
- Department of Pharmaceutics, College of Pharmacy, Taif University, Taif, Saudi Arabia
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de Castro IM, Antunes C, Valentim CC, Spoladori LFDA, Suzukawa HT, Correia GF, Silva-Rodrigues G, Borges PHG, Bartolomeu-Gonçalves G, Silva ML, Bispo MDLF, Machado RRB, Nakamura CV, Nakazato G, Pinge-Filho P, Tavares ER, Yamauchi LM, Yamada-Ogatta SF. Synergistic Antibacterial Interaction of Geraniol and Biogenic Silver Nanoparticles on Methicillin-Resistant Staphylococcus aureus. PLANTS (BASEL, SWITZERLAND) 2025; 14:1059. [PMID: 40219128 PMCID: PMC11991589 DOI: 10.3390/plants14071059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2025] [Revised: 03/25/2025] [Accepted: 03/27/2025] [Indexed: 04/14/2025]
Abstract
Since ancient times, plants have been used in folk medicine to treat different diseases. Plants offer exceptional chemical diversity with a wide range of biological activities, and have therefore been the most promising sources for the discovery and development of drugs, including antimicrobial agents. This study reports the antibacterial effect of geraniol (GER), alone and in combination with biogenic silver nanoparticles (bioAgNPs), produced using the aqueous extract of Trichilia catigua bark, against planktonic and sessile cells of methicillin-resistant Staphylococcus aureus (MRSA), one of the main opportunistic and potentially fatal human pathogens. GER had a time-dependent bactericidal effect on planktonic cells, impairing the cell membrane integrity. In addition, GER inhibited the staphyloxanthin production, and molecular docking analyses supported the in silico affinity of GER to dehydrosqualene synthase (CrtM) and 4,4'-diaponeurosporen-aldehyde dehydrogenase (AldH), which are key enzymes within the pigment biosynthesis pathway in S. aureus. GER treatment increased the sensitivity of MRSA to hydrogen peroxide killing. GER displayed synergism with bioAgNPs against planktonic and sessile cells, inhibiting bacterial adhesion and the viability of biofilms formed on abiotic surfaces. MRSA planktonic and sessile cells treated with GER or GER/bioAgNPs displayed severe morphological and ultrastructural alterations. Notably, neither GER nor its combination caused in vitro and in vivo toxicity in mammalian cells and Galleria mellonella larvae, respectively. These findings suggest that the combination of GER/bioAgNPs may be a promising strategy to control MRSA infections.
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Affiliation(s)
- Isabela Madeira de Castro
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Camila Antunes
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Camila Cristina Valentim
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Laís Fernanda de Almeida Spoladori
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Helena Tiemi Suzukawa
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Guilherme Ferreira Correia
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Gislaine Silva-Rodrigues
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Paulo Henrique Guilherme Borges
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Guilherme Bartolomeu-Gonçalves
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Universidade Estadual de Londrina, Londrina 86038-350, Paraná, Brazil
| | - Mariana Luiza Silva
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas e da Terra, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (M.L.S.); (M.d.L.F.B.)
| | - Marcelle de Lima Ferreira Bispo
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas e da Terra, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (M.L.S.); (M.d.L.F.B.)
| | - Rayanne Regina Beltrame Machado
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil;
| | - Celso Vataru Nakamura
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Universidade Estadual de Maringá, Maringá 87020-900, Paraná, Brazil;
| | - Gerson Nakazato
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
| | - Phileno Pinge-Filho
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Imunopatologia Experimental, Departmento of Imunologia, Parasitologia e Patologia Geral, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil
| | - Eliandro Reis Tavares
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
- Departamento de Medicina, Pontifícia Universidade Católica do Paraná, Londrina 86067-000, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-graduação em Microbiologia, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (I.M.d.C.); (L.F.d.A.S.); (H.T.S.); (G.F.C.); (G.S.-R.); (P.H.G.B.); (C.V.N.); (G.N.); (P.P.-F.); (E.R.T.); (L.M.Y.)
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86055-900, Paraná, Brazil; (C.A.); (C.C.V.); (G.B.-G.)
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Universidade Estadual de Londrina, Londrina 86038-350, Paraná, Brazil
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Bie S, Yuan H, Shi C, Li C, Lu M, Yao Z, Liu R, Lu D, Ma T, Yu H. Antibiofilm activity of Plumbagin against Staphylococcus aureus. Sci Rep 2025; 15:7948. [PMID: 40055436 PMCID: PMC11889106 DOI: 10.1038/s41598-025-92435-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2024] [Accepted: 02/27/2025] [Indexed: 05/13/2025] Open
Abstract
In chronic infections caused by Staphylococcus aureus, biofilm is a major virulence factor. In Staphylococcus aureus biofilms, bacteria are embedded in a matrix of extracellular polymeric substances and are highly tolerant to antimicrobial drugs. However, the lack of effective solutions to inhibit biofilm formation remains a challenge, and the mechanism of inhibition of biofilm formation targeting extracellular polymeric substances is unclear. The aim of the present study was to investigate the inhibitory mechanisms of Plumbagin against Staphylococcus aureus biofilms formation by affecting secretion of extracellular polymeric substances using the high-content screening. Our results showed Plumbagin (16 µg/mL) inhibited biofilm formation, revealing a significant reduction in both biomass and bacterial metabolic activity, and disrupted the biofilm structure, leading to a significant decrease in both biological volume and average thickness (P ≤ 0.01). High-content screening imaging indicated that the Plumbagin treatment induced alterations in the extracellular polymeric substances of Staphylococcus aureus biofilm, significantly reducing the quantities of extracellular polysaccharide, proteins and extracellular DNA. Interestingly, extracellular DNA within the matrix was found to be the most sensitive to Plumbagin treatment. Extracellular DNA formation was significantly inhibited at a concentration of 4 µg/mL, whereas the inhibition of extracellular polysaccharide and proteins required a higher concentration of 8 µg/mL. Overall, these results demonstrated the inhibitory effects of Plumbagin on Staphylococcus aureus biofilm formation and extracellular polymeric substances secretion, suggesting that extracellular DNA may be a potential target for the anti-biofilm activity of Plumbagin. These findings will provide new insights into the mode of action of Plumbagin in treating infections caused by Staphylococcus aureus biofilms.
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Affiliation(s)
- Songtao Bie
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China.
- Tianjin Key Laboratory of Intelligent and Green Pharmaceuticals for Traditional Chinese Medicine, Tianjin, China.
| | - Hui Yuan
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Chen Shi
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Chunshuang Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Ming Lu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Ze Yao
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Ruobing Liu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Ding Lu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Tenglong Ma
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Heshui Yu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
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Piłat E, Gnatowski P, Kurdyn A, Cieśliński H, Augustin E, Kucińska-Lipka J. Investigation of bioprintable modified agar-based hydrogels with antimicrobial properties. Int J Biol Macromol 2025; 289:138707. [PMID: 39694361 DOI: 10.1016/j.ijbiomac.2024.138707] [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: 08/22/2024] [Revised: 11/27/2024] [Accepted: 12/10/2024] [Indexed: 12/20/2024]
Abstract
Due to the numerous dangers arising from excessive use of antibiotics in treatments, researchers have been searching for natural alternatives to conventional antibiotics. Despite the popularity of plant extracts, essential oils, and their derivatives in herbal medicine, their applications in novel therapies are rather limited. This paper tries to open a new possibility for infection treatments by assessing the suitability of antimicrobial hydrogels as bioinks. Antimicrobial activity against S. epidermidis, P. aeruginosa, S. aureus, E. coli of selected extracts and geraniol were investigated. Suitable agent was incorporated into agar-based hydrogel. Physicochemical properties of the obtained compositions were analyzed, including determination of swelling kinetics and key polymer network parameters, contact angle measurements, FTIR spectra analysis, biocompatibility assessment, antimicrobial tests and bioprintability studies. Results confirmed geraniol's superior antimicrobial activity in pure form and in hydrogels. The obtained materials showed high swelling capacity, satisfying extrusion processability, shape fidelity, and great biocompatibility in their unmodified state. Nevertheless, modification with geraniol caused a significant decrease of cell viability, which limits their usage as bioinks in current form, due to the cytotoxic effect on cells. To improve cells interactions, studies on materials with geraniol and other agents with similar mechanism should be conducted in the future.
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Affiliation(s)
- Edyta Piłat
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza St. 11/12, 80-233 Gdańsk, Poland.
| | - Przemysław Gnatowski
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza St. 11/12, 80-233 Gdańsk, Poland; Department of Environmental Toxicology, Faculty of Health Sciences, Medical University of Gdańsk, Dębowa 23A, 80-204 Gdańsk, Poland
| | - Agnieszka Kurdyn
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza St. 11/12, 80-233 Gdańsk, Poland
| | - Hubert Cieśliński
- Department of Biotechnology and Microbiology, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza St. 11/12, 80-233 Gdańsk, Poland
| | - Ewa Augustin
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza St. 11/12, 80-233 Gdańsk, Poland
| | - Justyna Kucińska-Lipka
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza St. 11/12, 80-233 Gdańsk, Poland
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Sun M, Miao J, Zhang Y, Hao Y, Zhang J, Li H, Bai H, Shi L. Antioxidant activity analysis of new interspecific hybrid germplasm thyme and oregano essential oils with different chemotypes. BMC PLANT BIOLOGY 2025; 25:33. [PMID: 39780082 PMCID: PMC11716255 DOI: 10.1186/s12870-024-06015-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 12/24/2024] [Indexed: 01/11/2025]
Abstract
Thyme and oregano essential oils (EOs) and their components have numerous applications in the pharmaceutical, food, and cosmetic industries owing to their antioxidant, antibacterial, antifungal, anti-inflammatory, antiviral, and immunological properties. We attempted to create new chemotypes through the hybridization of thyme and oregano for functional EO research and product development. Here, we used interspecific hybridization to create new thyme and oregano germplasms with new EO chemotypes. The antioxidant activities of these new chemotype EOs were verified by DPPH, ABTS, and FRAP analyses. We determined that there are five types of thyme hybrid EOs: geraniol-type, carvacrol-type, thymol-type, parent polymerization-type, and α-terpineol/α-terpinyl acetate-type. Moreover, there are five types of oregano hybrid EOs: carvacrol-type, thymol-type, sabinene hydrate-type, parent polymerization-type, and carvacrol/sabinene hydrate-type. The geraniol, thymol, and carvacrol contents ranged from 30.45%, 1.21% and 0.00%, respectively, in the parents to 81.66%, 52.65%, and 46.16%, respectively, in the thyme hybrids. The carvacrol and thymol contents ranged from 2.33% to 24.18%, respectively, in the parents to 94.16% and 76.77%, respectively, in the oregano hybrids, indicating obvious heterosis. We further used three antioxidant assays, DPPH, ABTS, and FRAP, to analyse the antioxidant activity of thyme and oregano hybrid EO samples. The antioxidant capacities of carvacrol- and thymol-type EOs were significantly superior to those of other chemotypes. Our data suggest that carvacrol- and thymol-type EOs with greater antioxidant potential can be applied in many industries. In addition, the function of high geraniol-type thyme EO should be further researched. The results will also be very useful for the selection of new varieties, functional research on carvacrol-, thymol-, and geraniol-type essential oils, and product development of feed additives, cosmetics, etc.
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Affiliation(s)
- Meiyu Sun
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Jiahui Miao
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanan Zhang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuanpeng Hao
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | | | - Hui Li
- China National Botanical Garden, Beijing, 100093, China
| | - Hongtong Bai
- China National Botanical Garden, Beijing, 100093, China
| | - Lei Shi
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
- China National Botanical Garden, Beijing, 100093, China.
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7
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Yin L, Guo Y, Xv X, Dai Y, Li L, Sun F, Lv X, Shu G, Liang X, He C, Xu Z, Ouyang P. Cinnamaldehyde nanoemulsion decorated with rhamnolipid for inhibition of methicillin-resistant Staphylococcus aureus biofilm formation: in vitro and in vivo assessment. Front Microbiol 2024; 15:1514659. [PMID: 39777149 PMCID: PMC11703839 DOI: 10.3389/fmicb.2024.1514659] [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: 10/21/2024] [Accepted: 11/29/2024] [Indexed: 01/11/2025] Open
Abstract
Background Staphylococcus aureus (S. aureus) biofilm associated infections are prevalent and persistent, posing a serious threat to human health and causing significant economic losses in animal husbandry. Nanoemulsions demonstrate significant potential in the treatment of bacterial biofilm associated infections due to their unique physical, chemical and biological properties. In this study, a novel cinnamaldehyde nanoemulsion with the ability to penetrate biofilm structures and eliminate biofilms was developed. Methods The formulation of cinnamaldehyde nanoemulsion (Cin-NE) combined with rhamnolipid (RHL) was developed by self-assembly, and the efficacies of this formulation in inhibiting S. aureus biofilm associated infections were assessed through in vitro assays and in vivo experiments by a mouse skin wound healing model. Results The particle size of the selected Cin-NE formulation was 13.66 ± 0.08 nm, and the Cin-RHL-NE formulation was 20.45 ± 0.25 nm. The selected Cin-RHL-NE formulation was stable at 4, 25, and 37°C. Furthermore, the Minimum Inhibitory Concentration (MIC) value of Cin-RHL-NE against MRSA was two-fold lower than drug solution. Confocal laser scanning microscopy (CLSM) revealed the superior efficacy of Cin-RHL-NE in eradicating MRSA biofilms while maintaining the Cin's inherent functional properties. The efficacy of Cin-RHL-NE in the mouse skin wound healing model was superior to other formulation. Conclusion These findings highlight the potential of the formulation Cin-RHL-NE for eradicating biofilms, and effective in treating notoriously persistent bacterial infections. The Cin-RHL-NE can used as a dosage form of Cin application to bacterial biofilm associated infections.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Zhiwen Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China
| | - Ping Ouyang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China
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8
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Sun M, Zhang Y, Hao Y, Miao J, Sun G, Xiao J, Yang X, Zhang J, Shi L. Antioxidant and Antibacterial Activities of Chinese Native Thyme Essential Oils with Different Chemotypes. Molecules 2024; 29:6035. [PMID: 39770122 PMCID: PMC11678765 DOI: 10.3390/molecules29246035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2024] [Revised: 12/19/2024] [Accepted: 12/19/2024] [Indexed: 01/11/2025] Open
Abstract
Thyme essential oils (EOs) have antioxidant, antiviral, antifungal, antibacterial, anti-inflammatory, and immunological properties and are used in medicine, food, feed additives, and cosmetics. Here, we made use of a multidimensional analytical method to analyze the differences in the chemical components, chemotypes, and antioxidant and antibacterial activities of EOs from 24 Chinese native thymes. These Chinese native thymes comprised 10 species (Thymus quinquecostatus, T. mongolicus, T. inaequalis, T. mandschuricus, T. curtus, T. amurensis, T. roseus, T. proximu, T. marschallianus, and T. altaicus) and two varieties (T. quinquecostatus var. asiaticus and T. quinquecostatus var. przewalskii). Four primary chemotype groups were identified, namely carvacrol, thymol, geraniol, and α-terpineol. The maximum carvacrol, thymol, geraniol, and α-terpineol contents were 72.4, 58.6, 59.5, and 65.4%, respectively. The antioxidant capacities of the thymol and carvacrol chemotype EOs were found to be significantly superior to the other chemotypes using three antioxidant assays: DPPH, ABTS, and FRAP. Moreover, the thymol and carvacrol EO chemotypes could significantly inhibit the growths of the common food-borne pathogenic bacteria Staphylococcus aureus and Escherichia coli. A correlation analysis between the EO components and the bacteria showed that thymol significantly positively correlated with the bacteria. In summary, we analyzed the thyme EOs' antioxidant and antibacterial activities, which laid a foundation for their use in medicines, foods, feed additives, and cosmetics. The results will also be very useful for the selection of wild thymes for functional research on carvacrol-, thymol-, geraniol-, and α-terpineol-rich essential oil chemotypes and the product development of feed additives, cosmetics, etc.
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Affiliation(s)
- Meiyu Sun
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (M.S.); (Y.Z.); (Y.H.); (J.M.); (X.Y.)
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
| | - Yanan Zhang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (M.S.); (Y.Z.); (Y.H.); (J.M.); (X.Y.)
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuanpeng Hao
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (M.S.); (Y.Z.); (Y.H.); (J.M.); (X.Y.)
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
| | - Jiahui Miao
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (M.S.); (Y.Z.); (Y.H.); (J.M.); (X.Y.)
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guofeng Sun
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
| | - Jianhua Xiao
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
| | - Xiao Yang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (M.S.); (Y.Z.); (Y.H.); (J.M.); (X.Y.)
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinzheng Zhang
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
| | - Lei Shi
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (M.S.); (Y.Z.); (Y.H.); (J.M.); (X.Y.)
- China National Botanical Garden, Beijing 100093, China; (G.S.); (J.X.)
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Salikin NH, Keong LC, Azemin WA, Philip N, Yusuf N, Daud SA, Rashid SA. Combating multidrug-resistant (MDR) Staphylococcus aureus infection using terpene and its derivative. World J Microbiol Biotechnol 2024; 40:402. [PMID: 39627623 DOI: 10.1007/s11274-024-04190-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Accepted: 11/01/2024] [Indexed: 12/13/2024]
Abstract
Multidrug-resistant (MDR) Staphylococcus aureus represents a major global health issue resulting in a wide range of debilitating infections and fatalities. The slow progression of new antibiotics, limited choices for treatment, and scarcity of new drug approvals create immense obstacles in new drug line development. S. aureus poses a significant public health risk, due to the emergence of methicillin-resistant (MRSA) and vancomycin-resistant strains (VRSA), necessitating novel antibiotics for effective control management. Current studies are delving into the terpenes' potential as an antimicrobial agent, indicating positive prospects as promising substitutes or complementary to conventional antibiotics. Concurrent reactions of terpenes with conventional antibiotics create synergistic effects that significantly enhance antibiotic efficacy. Accumulated evidence has shown that while efflux pump (e.g., NorA, TetK, and MepA) is revealed as an essential defense of S. aureus against antibiotics, terpene and its derivative act as its potent inhibitor, suggesting the promising potential of terpenes in combating those infectious pathogens. Furthermore, pronounced cell membrane disruptive activity and antibiofilm properties by terpenes have been exerted, signifying their significance as promising prevention against microbial pathogenesis and antimicrobial resistance. This review provides an overview of the potential of terpenes and their derivatives in combating S. aureus infections, highlighting their potential mechanisms of action (MOA), synergistic effects with conventional antibiotics, and challenges in clinical translation. The unique properties of terpenes offer an opportunity for their use in developing an exceptional defense strategy against antibiotic-resistant S. aureus.
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Affiliation(s)
- Nor Hawani Salikin
- School of Industrial Technology, Universiti Sains Malaysia, 11800, Minden Pulau Pinang, Malaysia
| | - Lee Chee Keong
- School of Industrial Technology, Universiti Sains Malaysia, 11800, Minden Pulau Pinang, Malaysia
| | - Wan-Atirah Azemin
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Minden Pulau Pinang, Malaysia
| | - Noraini Philip
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Minden Pulau Pinang, Malaysia
| | - Nurhaida Yusuf
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Aceh, Indonesia
| | - Siti Aisyah Daud
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Minden Pulau Pinang, Malaysia
| | - Syarifah Ab Rashid
- School of Biological Sciences, Universiti Sains Malaysia, 11800, Minden Pulau Pinang, Malaysia.
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10
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Roshni PT, Rekha PD. Essential oils: a potential alternative with promising active ingredients for pharmaceutical formulations in chronic wound management. Inflammopharmacology 2024; 32:3611-3630. [PMID: 39312099 DOI: 10.1007/s10787-024-01571-3] [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: 07/30/2024] [Accepted: 09/11/2024] [Indexed: 11/10/2024]
Abstract
Chronic wound is a major clinical challenge that complicates wound healing, mainly associated with bacterial biofilms. Bacterial burden damages tissue and persists inflammation, failing to granulate, leading to morbidity and mortality. Various therapeutic strategies and approaches have been developed for chronic wound healing in clinical practice. As treating biofilm infection is crucial in chronic wounds, a potent antibiofilm agent, essential oils have been explored extensively for their therapeutic properties and as a replacement for antibiotic therapy. Currently, several studies on essential oils and their active compounds in therapeutics, such as adjunctive therapies, nanotechnology-based treatment and their drug delivery systems, help heal chronic wounds. The antimicrobial, anti-inflammatory and antioxidant properties of essential oils make them distinct and are renowned as natural remedies to improve the healing of infected chronic wounds. Consequently, it accelerates wound closure by reducing inflammation, increasing angiogenesis and tissue regeneration. This review focuses on different essential oils and their active compounds that are exploited for the treatment of biofilm infection, chronic inflammation and wound healing. Thus, an effective novel treatment can be developed to improve the current treatment strategy to overcome multidrug resistance bacteria or antibiotic resistance in various chronic wound infections that support wound healing.
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Affiliation(s)
- Pulukkunadu Thekkeveedu Roshni
- Division of Microbiology and Biotechnology, Yenepoya Research Centre, Yenepoya (Deemed to be University), University Road, Deralakatte, Mangalore, Karnataka 575018, India
| | - Punchappady Devasya Rekha
- Division of Microbiology and Biotechnology, Yenepoya Research Centre, Yenepoya (Deemed to be University), University Road, Deralakatte, Mangalore, Karnataka 575018, India.
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11
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Sezener Kabay MG, Inal S, Gökmen S, Ergüden VE, Fındık A, Güvenç T, Kayhan H, Güvenç D. Antibacterial Effects of Essential Oils on P. aeruginosa, Methicillin-Resistant S. aureus, and Staphylococcus spp. Isolated from Dog Wounds. Pharmaceuticals (Basel) 2024; 17:1494. [PMID: 39598405 PMCID: PMC11597206 DOI: 10.3390/ph17111494] [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: 10/07/2024] [Revised: 10/26/2024] [Accepted: 10/28/2024] [Indexed: 11/29/2024] Open
Abstract
Background: Essential oils exhibit several biological activities such as antimicrobial, antioxidant, proliferative, and anti-inflammatory. This study was aimed at investigating the antimicrobial effects and cytotoxic activities of niaouli, palmarosa, and clove essential oils. Methods: Content analyses of these essential oils were carried out by gas chromatography-mass spectrometry. The antibacterial activity was screened against methicillin-resistant S. aureus ATCC 43300, P. aeruginosa ATCC 27853, P. aeruginosa PAO1, S. aureus ATCC 25923, and 44 isolates (22 P. aeruginosa isolates, 4 S. aureus isolates, and 18 Staphylococcus spp. isolates) obtained from dogs with previous wound infections who were included in the current study. The antimicrobial effects of essential oils were investigated using disk diffusion and minimum inhibition/bactericidal concentration methods. Additionally, the antibiofilm, protease, elastase, and gelatinase activities of the essential oils were evaluated. Different concentrations of each essential oil ranging from 10 to 1000 µg/mL were also analyzed in terms of cell viability by WST-8 assay in primary canine fibroblast cells. Results: The fibroblast cell viabilities of palmarosa, niaouli, and clove oils at a 1000 µg/mL concentration were 75.4%, 96.39%, and 75.34%, respectively. All the EOs were found to have bactericidal effects with MBCs/MICs of 0.015 to 0.5 µL/mL against P. aeruginosa, Staphylococcus isolates (p < 0.001). Palmarosa was found to have the largest inhibition zone diameter (20.5 ± 6.6, 16.4 ± 2.3) compared to other essential oils in the disk diffusion test against Staphylococcus spp. and P. aeruginosa (p < 0.001). But none of the EOs reduced protease, elastase, and gelatinase activities, which are some of the virulence properties of the tested bacteria. Conclusions: These results showed that palmarosa, niaouli, and clove essential oils act as potential antibacterial agents for dogs against P. aeruginosa, methicillin-resistant S. aureus, and Staphylococcus spp., without damaging the skin.
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Affiliation(s)
- Merve Gizem Sezener Kabay
- Department of Microbiology, Faculty of Veterinary Medicine, University of Ondokuz Mayıs, Atakum 55270, Samsun, Turkey; (M.G.S.K.); (V.E.E.); (A.F.)
| | - Sinem Inal
- Department of Pathology, Faculty of Veterinary Medicine, University of Ondokuz Mayıs, Atakum 55270, Samsun, Turkey; (S.I.); (T.G.)
| | - Sedat Gökmen
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Kastamonu, Kuzeykent 37150, Samsun, Turkey;
| | - Volkan Enes Ergüden
- Department of Microbiology, Faculty of Veterinary Medicine, University of Ondokuz Mayıs, Atakum 55270, Samsun, Turkey; (M.G.S.K.); (V.E.E.); (A.F.)
| | - Arzu Fındık
- Department of Microbiology, Faculty of Veterinary Medicine, University of Ondokuz Mayıs, Atakum 55270, Samsun, Turkey; (M.G.S.K.); (V.E.E.); (A.F.)
| | - Tolga Güvenç
- Department of Pathology, Faculty of Veterinary Medicine, University of Ondokuz Mayıs, Atakum 55270, Samsun, Turkey; (S.I.); (T.G.)
| | - Hülya Kayhan
- Art de Huile—Aromatherapy, Zekeriyaköy 34450, Istanbul, Turkey;
| | - Dilek Güvenç
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ondokuz Mayıs, Atakum 55270, Samsun, Turkey
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12
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Tian LL, Li Y, Yang R, Jiang Y, He JJ, Wang H, Chen LQ, Zhu WY, Xue T, Li BB. Low concentrations of tetrabromobisphenol A promote the biofilm formation of methicillin-resistant Staphylococcus aureus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 283:116853. [PMID: 39137468 DOI: 10.1016/j.ecoenv.2024.116853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 08/02/2024] [Accepted: 08/06/2024] [Indexed: 08/15/2024]
Abstract
The effect and underlying mechanism of tetrabromobisphenol A (TBBPA), a plastic additive, on biofilm formation of methicillin-resistant Staphylococcus aureus (MRSA USA300) remain unknown. This study first investigated the impact of different concentrations of TBBPA on the growth and biofilm formation of USA300. The results indicated that a low concentration (0.5 mg/L) of TBBPA promoted the growth and biofilm formation of USA300, whereas high concentrations (5 mg/L and 10 mg/L) of TBBPA had inhibitory effects. Further exploration revealed that the low concentration of TBBPA enhance biofilm formation by promoting the synthesis of extracellular proteins, release of extracellular DNA (eDNA), and production of staphyloxanthin. RTqPCR analysis demonstrated that the low concentration of TBBPA upregulated genes associated with extracellular protein synthesis (sarA, fnbA, fnbB, aur) and eDNA formation (atlA) and increased the expression of genes involved in staphyloxanthin biosynthesis (crtM), suggesting a potential mechanism for enhanced resistance of USA300 to adverse conditions. These findings shed light on how low concentrations of TBBPA facilitate biofilm formation in USA300 and highlight the indirect impact of plastic additives on pathogenic bacteria in terms of human health. In the future, in-depth studies about effects of plastic additives on pathogenicity of pathogenic bacteria should be conducted. CAPSULE: The protein and eDNA contents in biofilms of methicillin-resistant Staphylococcus aureus are increased by low concentrations of TBBPA.
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Affiliation(s)
- Lin-Lin Tian
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Yun Li
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Rui Yang
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Ying Jiang
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Jiao-Jiao He
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Hui Wang
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Li-Qi Chen
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Wen-Ya Zhu
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Ting Xue
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China; Food Procession Research Institute, Anhui Agricultural University, Hefei, Anhui 230036, China.
| | - Bing-Bing Li
- School of Life Sciences, Anhui Agricultural University, Hefei, Anhui 230036, China.
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13
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Wang S, Jiang Y, Zhang W, Wei Y, Xiao X, Wei Z, Wen X, Dong Y, Jian J, Wang N, Pang H. The Effect of the Lysine Acetylation Modification of ClpP on the Virulence of Vibrio alginolyticus. Molecules 2024; 29:4278. [PMID: 39275125 PMCID: PMC11396845 DOI: 10.3390/molecules29174278] [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: 07/10/2024] [Revised: 09/06/2024] [Accepted: 09/07/2024] [Indexed: 09/16/2024] Open
Abstract
Acetylation modification has become one of the most popular topics in protein post-translational modification (PTM) research and plays an important role in bacterial virulence. A previous study indicated that the virulence-associated caseinolytic protease proteolytic subunit (ClpP) is acetylated at the K165 site in Vibrio alginolyticus strain HY9901, but its regulation regarding the virulence of V. alginolyticus is still unknown. We further confirmed that ClpP undergoes lysine acetylation (Kace) modification by immunoprecipitation and Western blot analysis and constructed the complementation strain (C-clpP) and site-directed mutagenesis strains including K165Q and K165R. The K165R strain significantly increased biofilm formation at 36 h of incubation, and K165Q significantly decreased biofilm formation at 24 h of incubation. However, the acetylation modification of ClpP did not affect the extracellular protease (ECPase) activity. In addition, we found that the virulence of K165Q was significantly reduced in zebrafish by in vivo injection. To further study the effect of lysine acetylation on the pathogenicity of V. alginolyticus, GS cells were infected with four strains, namely HY9901, C-clpP, K165Q and K165R. This indicated that the effect of the K165Q strain on cytotoxicity was significantly reduced compared with the wild-type strain, while K165R showed similar levels to the wild-type strain. In summary, the results of this study indicate that the Kace of ClpP is involved in the regulation of the virulence of V. alginolyticus.
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Affiliation(s)
- Shi Wang
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Yingying Jiang
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Weijie Zhang
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Yingzhu Wei
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Xing Xiao
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Zhiqing Wei
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Xiaoxin Wen
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Yuhang Dong
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Jichang Jian
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
| | - Na Wang
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China;
| | - Huanying Pang
- Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China; (S.W.); (Y.J.); (W.Z.); (Y.W.); (X.X.); (Z.W.); (X.W.); (Y.D.); (J.J.)
- Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang 524025, China
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14
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Muniyasamy R, Manjubala I. Synergistic combination of baicalein and rifampicin against Staphylococcus aureus biofilms. Front Microbiol 2024; 15:1458267. [PMID: 39165570 PMCID: PMC11333347 DOI: 10.3389/fmicb.2024.1458267] [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: 07/02/2024] [Accepted: 07/18/2024] [Indexed: 08/22/2024] Open
Abstract
Staphylococcus aureus, a Gram-positive bacterium, is a predominant pathogen associated with various infections. The rapid emergence of antibiotic resistance has intensified the challenge of managing fracture-related infections in severe osteoporotic patients. Rifampicin, a potent antimicrobial agent employed against fracture and implant-related infections, necessitates combination therapies due to its susceptibility to antibiotic resistance. In this study, we explored the potential of baicalein, a bioactive flavonoid from Oroxylum indicum and Scutellaria baicalensis, in combination with rifampicin against S. aureus biofilms invitro. The minimum inhibitory concentration of baicalein and rifampicin were determined as 500 μg/mL and 12.5 ng/mL respectively. The synergistic activity of baicalein and rifampicin was determined by the fractional inhibitory concentration index (FICI) using checkerboard assay. The results showed the FICI of baicalein and rifampicin was lesser than 0.5, demonstrating synergistic effect. Furthermore, the efficacy of baicalein and rifampicin, both individually and in combination, was evaluated for biofilm inhibition and eradication. Scanning electron microscopy and confocal laser microscopy also confirmed that the synergistic combinations effectively removed most of the biofilms and partially killed pre-formed biofilms. In conclusion, the findings demonstrate that baicalein is as effective as rifampicin in inhibiting and eradicating S. aureus biofilms. Their combination exhibits synergistic effect, enhancing their bactericidal effect in completely eradicating S. aureus biofilms. The findings of this research underscore the research potential of combining baicalein and rifampicin as a novel therapeutic strategy against S. aureus biofilms, offering a promising direction for future research in the treatment of fracture-related S. aureus infections.
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Affiliation(s)
| | - I. Manjubala
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
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15
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Beltrán-Martínez ME, Tapia-Rodríguez MR, Ayala-Zavala JF, Gómez-Álvarez A, Robles-Zepeda RE, Torres-Moreno H, de Rodríguez DJ, López-Romero JC. Antimicrobial and Antibiofilm Potential of Flourensia retinophylla against Staphylococcus aureus. PLANTS (BASEL, SWITZERLAND) 2024; 13:1671. [PMID: 38931103 PMCID: PMC11207523 DOI: 10.3390/plants13121671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024]
Abstract
Staphylococcus aureus is a Gram-positive bacteria with the greatest impact in the clinical area, due to the high rate of infections and deaths reaching every year. A previous scenario is associated with the bacteria's ability to develop resistance against conventional antibiotic therapies as well as biofilm formation. The above situation exhibits the necessity to reach new effective strategies against this pathogen. Flourensia retinophylla is a medicinal plant commonly used for bacterial infections treatments and has demonstrated antimicrobial effect, although its effect against S. aureus and bacterial biofilms has not been investigated. The purpose of this work was to analyze the antimicrobial and antibiofilm potential of F. retinophylla against S. aureus. The antimicrobial effect was determined using an ethanolic extract of F. retinophylla. The surface charge of the bacterial membrane, the K+ leakage and the effect on motility were determined. The ability to prevent and remove bacterial biofilms was analyzed in terms of bacterial biomass, metabolic activity and viability. The results showed that F. retinophylla presents inhibitory (MIC: 250 µg/mL) and bactericidal (MBC: 500 µg/mL) activity against S. aureus. The MIC extract increased the bacterial surface charge by 1.4 times and the K+ concentration in the extracellular medium by 60%. The MIC extract inhibited the motility process by 100%, 61% and 40% after 24, 48 and 72 h, respectively. The MIC extract prevented the formation of biofilms by more than 80% in terms of biomass production and metabolic activity. An extract at 10 × MIC reduced the metabolic activity by 82% and the viability by ≈50% in preformed biofilms. The results suggest that F. retinophylla affects S. areus membrane and the process of biofilm formation and removal. This effect could set a precedent to use this plant as alternative for antimicrobial and disinfectant therapies to control infections caused by this pathogen. In addition, this shrub could be considered for carrying out a purification process in order to identify the compounds responsible for the antimicrobial and antibiofilm effect.
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Affiliation(s)
- Minerva Edith Beltrán-Martínez
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera Gustavo Astiazarán Rosas No. 46, Colonia la Victoria, Hermosillo 83304, Mexico; (M.E.B.-M.); (J.F.A.-Z.)
| | - Melvin Roberto Tapia-Rodríguez
- Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de Febrero 818 sur, Col. Centro, Ciudad Obregón 85000, Mexico;
| | - Jesús Fernando Ayala-Zavala
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera Gustavo Astiazarán Rosas No. 46, Colonia la Victoria, Hermosillo 83304, Mexico; (M.E.B.-M.); (J.F.A.-Z.)
| | - Agustín Gómez-Álvarez
- Departamento de Ingeniería Química y Metalurgia, Universidad de Sonora, Hermosillo 83000, Mexico;
| | | | - Heriberto Torres-Moreno
- Departamento de Ciencias Químico Biológicas y Agropecuarias, Universidad de Sonora, Caborca 83600, Mexico;
| | | | - Julio César López-Romero
- Departamento de Ciencias Químico Biológicas y Agropecuarias, Universidad de Sonora, Caborca 83600, Mexico;
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Lu L, Wang J, Wang C, Zhu J, Wang H, Liao L, Zhao Y, Wang X, Yang C, He Z, Li M. Plant-derived virulence arresting drugs as novel antimicrobial agents: Discovery, perspective, and challenges in clinical use. Phytother Res 2024; 38:727-754. [PMID: 38014754 DOI: 10.1002/ptr.8072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/23/2023] [Accepted: 11/05/2023] [Indexed: 11/29/2023]
Abstract
Antimicrobial resistance (AMR) emerges as a severe crisis to public health and requires global action. The occurrence of bacterial pathogens with multi-drug resistance appeals to exploring alternative therapeutic strategies. Antivirulence treatment has been a positive substitute in seeking to circumvent AMR, which aims to target virulence factors directly to combat bacterial infections. Accumulated evidence suggests that plant-derived natural products, which have been utilized to treat infectious diseases for centuries, can be abundant sources for screening potential virulence-arresting drugs (VADs) to develop advanced therapeutics for infectious diseases. This review sums up some virulence factors and their actions in various species of bacteria, as well as recent advances pertaining to plant-derived natural products as VAD candidates. Furthermore, we also discuss natural VAD-related clinical trials and patents, the perspective of VAD-based advanced therapeutics for infectious diseases and critical challenges hampering clinical use of VADs, and genomics-guided identification for VAD therapeutic. These newly discovered natural VADs will be encouraging and optimistic candidates that may sustainably combat AMR.
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Affiliation(s)
- Lan Lu
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P.R. China
| | - Jingya Wang
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P.R. China
| | - Chongrui Wang
- Faculty of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, P.R. China
| | - Jie Zhu
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P.R. China
| | - Hongping Wang
- Safety Evaluation Center, Sichuan Institute for Drug Control (Sichuan Testing Center of Medical Devices), Chengdu, Sichuan, P.R. China
| | - Li Liao
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P.R. China
| | - Yuting Zhao
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P.R. China
| | - Xiaobo Wang
- Department of Hepatobiliary Surgery, Langzhong People's Hospital, Langzhong, Sichuan, P.R. China
| | - Chen Yang
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P.R. China
| | - Zhengyou He
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, P.R. China
| | - Mingxing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
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17
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Gao T, Fu J, Liu L, Bai J, Lv Y, Zhu Y, Lan Y, Cao X, Feng H, Shen C, Liu S, Zhang S, Guo J. Transcriptome and proteomics conjoint analysis reveal anti-alcoholic liver injury effect of Dianhong Black Tea volatile substances. Food Sci Nutr 2024; 12:313-327. [PMID: 38268900 PMCID: PMC10804116 DOI: 10.1002/fsn3.3763] [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: 05/30/2023] [Revised: 09/25/2023] [Accepted: 09/27/2023] [Indexed: 01/26/2024] Open
Abstract
Dianhong Black Tea, a fermented tea containing various bioactive ingredients, has been found to have a significant role in alleviating alcoholic liver injury (ALI). One of its main unique components, Dianhong Black Tea volatile substances (DBTVS), may have potential anti-ALI effects. However, its effects and underlying molecular mechanisms are still unknown. In this study, we aimed to investigate the potential of DBTVS as an anti-ALI agent using alcohol-fed rats. We assessed the effect of DBTVS on ALI by analyzing serum transaminase and lipid levels, as well as conducting hematoxylin-eosin and oil red O staining. Additionally, GC-MS was used to detect the components of DBTVS, while transcriptome, proteomics analysis, Western blot, and molecular docking were employed to uncover the underlying mechanisms. Our results demonstrated that DBTVS significantly reduced serum ALT and AST levels and improved lipid metabolism disorders. Moreover, we identified 14 components in DBTVS, with five of them exhibiting strong binding affinity with key proteins. These findings suggested that DBTVS could be a promising agent for the prevention and treatment of ALI. Its potential therapeutic effects may be attributed to its ability to regulate lipid metabolism through the PPAR signaling pathway.
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Affiliation(s)
- Tinghui Gao
- Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, College of PharmacyChengdu University of Traditional Chinese MedicineChengduP.R. China
| | - JiaoJiao Fu
- College of Medical TechnologyChengdu University of Traditional Chinese MedicineChengduP.R. China
| | - Lin Liu
- Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, College of PharmacyChengdu University of Traditional Chinese MedicineChengduP.R. China
| | - Jing Bai
- College of Medical TechnologyChengdu University of Traditional Chinese MedicineChengduP.R. China
| | - Yangjun Lv
- Hangzhou Tea Research Institute, China CoopHangzhouP.R. China
| | - Yuejin Zhu
- Hangzhou Tea Research Institute, China CoopHangzhouP.R. China
| | - Yu Lan
- Luzhou Laojiao Group Co. Ltd.LuzhouP.R. China
| | | | | | - Caihong Shen
- National Engineering Research Center of Solid‐State BrewingLuzhouP.R. China
| | - Sijing Liu
- College of Medical TechnologyChengdu University of Traditional Chinese MedicineChengduP.R. China
| | - Shikang Zhang
- Hangzhou Tea Research Institute, China CoopHangzhouP.R. China
| | - Jinlin Guo
- Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, College of PharmacyChengdu University of Traditional Chinese MedicineChengduP.R. China
- College of Medical TechnologyChengdu University of Traditional Chinese MedicineChengduP.R. China
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Zhang J, Shen L, Zhou P, Chen S, Wang B, Wan C, Han W, Rao L, Zhao H, Wang X, Wu C, Shi J, Xiao Y, Song Z, Yu F, Lin C. A novel small-molecule compound S-342-3 effectively inhibits the biofilm formation of Staphylococcus aureus. Microbiol Spectr 2023; 11:e0159623. [PMID: 37819121 PMCID: PMC10714762 DOI: 10.1128/spectrum.01596-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 09/06/2023] [Indexed: 10/13/2023] Open
Abstract
IMPORTANCE Biofilms are an important virulence factor in Staphylococcus aureus and are characterized by a structured microbial community consisting of bacterial cells and a secreted extracellular polymeric matrix. Inhibition of biofilm formation is an effective measure to control S. aureus infection. Here, we have synthesized a small molecule compound S-342-3, which exhibits potent inhibition of biofilm formation in both MRSA and MSSA. Further investigations revealed that S-342-3 exerts inhibitory effects on biofilm formation by reducing the production of polysaccharide intercellular adhesin and preventing bacterial adhesion. Our study has confirmed that the inhibitory effect of S-342-3 on biofilm is achieved by downregulating the expression of genes responsible for biofilm formation. In addition, S-342-3 is non-toxic to Galleria mellonella larvae and A549 cells. Consequently, this study demonstrates the efficacy of a biologically safe compound S-342-3 in inhibiting biofilm formation in S. aureus, thereby providing a promising antibiofilm agent for further research.
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Affiliation(s)
- Jiao Zhang
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Li Shen
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Peiyao Zhou
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Shuying Chen
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Bingjie Wang
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Cailin Wan
- Jiangxi Provincial Key Laboratory of Preventive Medicine, School of Public Health, Nanchang University, Nanchang, China
| | - Weihua Han
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lulin Rao
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Huilin Zhao
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xinyi Wang
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chunyang Wu
- Department of Respiratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Junhong Shi
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yanghua Xiao
- Jiangxi Provincial Key Laboratory of Preventive Medicine, School of Public Health, Nanchang University, Nanchang, China
| | - Zengqiang Song
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Fangyou Yu
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
- Department of Clinical Laboratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chunchan Lin
- Department of Clinical Laboratory, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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19
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Apinundecha C, Teethaisong Y, Suknasang S, Ayamuang IO, Eumkeb G. Synergistic Interaction between Boesenbergia rotunda (L.) Mansf. Essential Oil and Cloxacillin on Methicillin-Resistant Staphylococcus aureus (MRSA) Inhibition. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2023; 2023:3453273. [PMID: 37114143 PMCID: PMC10129417 DOI: 10.1155/2023/3453273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/26/2022] [Accepted: 03/18/2023] [Indexed: 04/29/2023]
Abstract
Currently, antibiotic resistance is widespread among bacteria. This problem requires greater awareness because bacterial resistance increases, reducing antibiotic use effectiveness. Consequently, new alternative treatments are needed because the treatment options for these bacteria are limited. This work aims to determine the synergistic interaction and mechanism of action of Boesenbergia rotunda essential oil (BREO) against methicillin-resistant Staphylococcus aureus (MRSA). Gas chromatography-mass spectrometry identified 24 BREO chemicals (GC-MS). The main components of BREO were β-ocimene (36.73%), trans-geraniol (25.29%), camphor (14.98%), and eucalyptol (8.99%). BREO and CLX inhibited MRSA DMST 20649, 20651, and 20652 with a minimum inhibitory concentration (MIC) of 4 mg/mL and 512 µg/mL, respectively. The checkerboard method and the time-kill assay revealed synergy between BREO and CLX with fractional inhibitory concentration (FIC) <0.5 and log reduction >2log10 CFU/mL at 24 hours compared to the most effective chemical. BREO inhibited biofilm formation and increased membrane permeability. Exposure alone to BREO or in combination with CLX inhibited biofilm formation and increased cytoplasmic membrane (CM) permeability. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results revealed that alterations in the cell walls, cytoplasmic membrane, and leakage of intracellular components of MRSA DMST 20651 after treatment with BREO alone and in combination with CLX were observed. These results indicate that BREO synergizes and could reverse the antibacterial activity of CLX against MRSA strains. The synergy of BREO may lead to novel drug combinations that increase the effectiveness of antibiotics against MRSA.
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Affiliation(s)
- Chittadech Apinundecha
- School of Preclinical Sciences, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Yothin Teethaisong
- Faculty of Allied Health Sciences, Burapha University, Chon Buri 20131, Thailand
- Research Unit for Sensor Innovation (RUSI), Burapha University, Chonburi 20131, Thailand
| | - Siriporn Suknasang
- School of Preclinical Sciences, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Intu-Orn Ayamuang
- School of Biology, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Griangsak Eumkeb
- School of Preclinical Sciences, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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20
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Xu Y, Guo W, Luo D, Li P, Xiang J, Chen J, Xia X, Xie Q. Antibiofilm effects of punicalagin against Staphylococcus aureus in vitro. Front Microbiol 2023; 14:1175912. [PMID: 37125156 PMCID: PMC10140334 DOI: 10.3389/fmicb.2023.1175912] [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: 02/28/2023] [Accepted: 03/27/2023] [Indexed: 05/02/2023] Open
Abstract
Staphylococcus aureus is a common foodborne pathogen which can form biofilms to help them resist to antimicrobials. It brings great harm to human health. Punicalagin has good antimicrobial activities against S. aureus, but its effect on biofilm formation has not been clearly illustrated. The aim of this study was to explore the antibiofilm effects of punicalagin against S. aureus. Results showed that punicalagin did not significantly interfere with the growth of S. aureus at the concentrations of 1/64 MIC to 1/16 MIC. The biomass and metabolic activity of biofilms were significantly reduced when exposed to sub-inhibitory concentrations of punicalagin. The number of viable cells in the biofilms was also decreased after punicalagin treatment. Scanning electron microscopy and confocal laser scanning microscopy images confirmed that punicalagin damaged the structure of biofilms. The antibiofilm mechanism was partly due to the modification of the cell surface which led to the reduction of cell surface hydrophobicity. These findings suggest that punicalagin has the potential to be developed as an alternative to control S. aureus biofilms.
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Affiliation(s)
- Yunfeng Xu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Weiping Guo
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Denglin Luo
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Peiyan Li
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Jinle Xiang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Junliang Chen
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Xiaodong Xia
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning, China
- *Correspondence: Xiaodong Xia,
| | - Qinggang Xie
- Heilongjiang Feihe Dairy Co. Ltd., Beijing, China
- Qinggang Xie,
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Choudhary M, Shrivastava R, Vashistt J. Eugenol and geraniol impede Csu-pilus assembly and evades multidrug-resistant Acinetobacter baumannii biofilms: In-vitro and in-silico evidence. Biochem Biophys Res Commun 2022; 636:10-17. [DOI: 10.1016/j.bbrc.2022.10.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022]
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