1
|
Mahadevaswamy UR, Mugunthan S, Seviour T, Kjelleberg S, Lim S. Evaluating a polymicrobial biofilm model for structural components by co-culturing Komagataeibacter hansenii produced bacterial cellulose with Pseudomonas aeruginosa PAO1. Biofilm 2024; 7:100176. [PMID: 38322579 PMCID: PMC10845243 DOI: 10.1016/j.bioflm.2024.100176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/21/2023] [Accepted: 01/04/2024] [Indexed: 02/08/2024] Open
Abstract
A polymicrobial biofilm model of Komagataeibacter hansenii and Pseudomonas aeruginosa was developed to understand whether a pre-existing matrix affects the ability of another species to build a biofilm. P. aeruginosa was inoculated onto the preformed K. hansenii biofilm consisting of a cellulose matrix. P. aeruginosa PAO1 colonized and infiltrated the K. hansenii bacterial cellulose biofilm (BC), as indicated by the presence of cells at 19 μm depth in the translucent hydrogel matrix. Bacterial cell density increased along the imaged depth of the biofilm (17-19 μm). On day 5, the average bacterial count across sections was 67 ± 4 % P. aeruginosa PAO1 and 33 ± 6 % K. hansenii. Biophysical characterization of the biofilm indicated that colonization by P. aeruginosa modified the biophysical properties of the BC matrix, which inlcuded increased density, heterogeneity, degradation temperature and thermal stability, and reduced crystallinity, swelling ability and moisture content. This further indicates colonization of the biofilm by P. aeruginosa. While eDNA fibres - a key viscoelastic component of P. aeruginosa biofilm - were present on the surface of the co-cultured biofilm on day 1, their abundance decreased over time, and by day 5, no eDNA was observed, either on the surface or within the matrix. P. aeruginosa-colonized biofilm devoid of eDNA retained its mechanical properties. The observations demonstrate that a pre-existing biofilm scaffold of K. hansenii inhibits P. aeruginosa PAO1 eDNA production and suggest that eDNA production is a response by P. aeruginosa to the viscoelastic properties of its environment.
Collapse
Affiliation(s)
- Usha Rani Mahadevaswamy
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore
| | - Sudarsan Mugunthan
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore
| | - Thomas Seviour
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore
- Centre for Water Technology (WATEC), Department of Biological and Chemical Engineering, Aarhus University, Aarhus, 8000, Denmark
| | - Staffan Kjelleberg
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore
- School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia
| | - Sierin Lim
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore
- Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore
| |
Collapse
|
2
|
Hibbert T, Krpetic Z, Latimer J, Leighton H, McHugh R, Pottenger S, Wragg C, James CE. Antimicrobials: An update on new strategies to diversify treatment for bacterial infections. Adv Microb Physiol 2024; 84:135-241. [PMID: 38821632 DOI: 10.1016/bs.ampbs.2023.12.002] [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] [Indexed: 06/02/2024]
Abstract
Ninety-five years after Fleming's discovery of penicillin, a bounty of antibiotic compounds have been discovered, modified, or synthesised. Diversification of target sites, improved stability and altered activity spectra have enabled continued antibiotic efficacy, but overwhelming reliance and misuse has fuelled the global spread of antimicrobial resistance (AMR). An estimated 1.27 million deaths were attributable to antibiotic resistant bacteria in 2019, representing a major threat to modern medicine. Although antibiotics remain at the heart of strategies for treatment and control of bacterial diseases, the threat of AMR has reached catastrophic proportions urgently calling for fresh innovation. The last decade has been peppered with ground-breaking developments in genome sequencing, high throughput screening technologies and machine learning. These advances have opened new doors for bioprospecting for novel antimicrobials. They have also enabled more thorough exploration of complex and polymicrobial infections and interactions with the healthy microbiome. Using models of infection that more closely resemble the infection state in vivo, we are now beginning to measure the impacts of antimicrobial therapy on host/microbiota/pathogen interactions. However new approaches are needed for developing and standardising appropriate methods to measure efficacy of novel antimicrobial combinations in these contexts. A battery of promising new antimicrobials is now in various stages of development including co-administered inhibitors, phages, nanoparticles, immunotherapy, anti-biofilm and anti-virulence agents. These novel therapeutics need multidisciplinary collaboration and new ways of thinking to bring them into large scale clinical use.
Collapse
Affiliation(s)
- Tegan Hibbert
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Zeljka Krpetic
- School of Science, Engineering, and Environment, University of Salford, Salford, UK
| | - Joe Latimer
- School of Science, Engineering, and Environment, University of Salford, Salford, UK
| | - Hollie Leighton
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Rebecca McHugh
- School of Infection and Immunity, University of Glasgow, Glasgow, UK
| | - Sian Pottenger
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Charlotte Wragg
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences (IVES), University of Liverpool, Liverpool, UK
| | - Chloë E James
- School of Science, Engineering, and Environment, University of Salford, Salford, UK.
| |
Collapse
|
3
|
Liang S, Xiao L, Fang Y, Chen T, Xie Y, Peng Z, Wu M, Liu Y, Xie J, Nie Y, Zhao X, Deng Y, Zhao C, Mai Y. A nanocomposite hydrogel for co-delivery of multiple anti-biofilm therapeutics to enhance the treatment of bacterial biofilm-related infections. Int J Pharm 2024; 649:123638. [PMID: 38008233 DOI: 10.1016/j.ijpharm.2023.123638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/27/2023] [Accepted: 11/22/2023] [Indexed: 11/28/2023]
Abstract
The characteristics of biofilms have exacerbated the issue of clinical antibiotic resistance, rendering it a pressing challenge in need of resolution. The combination of biofilm-dispersing agents and antibiotics can eliminate biofilms and promote healing synergistically in infected wounds. In this study, we developed a novel nanocomposite hydrogel (NC gel) comprised of the poly(lactic acid)-hyperbranched polyglycerol (PLA-HPG) based bioadhesive nanoparticles (BNPs) and a hydrophilic carboxymethyl chitosan (CS) network. The NC gel was designed to co-deliver two biofilm-dispersing agents (an NO-donor SNO, and an α-amylase Am) and an antibiotic, cefepime (Cef), utilizing a synergistic anti-biofilm mechanism in which Am loosens the matrix structure and NO promotes the release of biofilm bacteria via quorum sensing, and Cef kills bacteria. The drug-loaded NC gel (SNO/BNP/CS@Am-Cef) demonstrated sustained drug release, minimal cytotoxicity, and increased drug-bacterial interactions at the site of infection. When applied to mice infected with methicillin-resistant Staphylococcus aureus (MRSA) biofilms in vivo, SNO/BNP/CS@Am-Cef enhanced biofilm elimination and promoted wound healing compared to traditional antibiotic treatments. Our work demonstrates the feasibility of the co-delivery of biofilm-dispersing agents and antibiotics using the NC gel and presents a promising approach for the polytherapy of bacterial biofilm-related infections.
Collapse
Affiliation(s)
- Shu Liang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Lingyun Xiao
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China; Precise Genome Engineering Center, School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Yixuan Fang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Tian Chen
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Yuan Xie
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Zhangwen Peng
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Meiying Wu
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Yang Liu
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Julin Xie
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
| | - Yichu Nie
- Clinical Research Institute, The First People's Hospital of Foshan & Sun Yat-sen University Foshan Hospital, Foshan 528000, China
| | - Xizhe Zhao
- Department of Chemistry, College of Staten Island, City University of New York, NY 10314, USA
| | - Yang Deng
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China.
| | - Chao Zhao
- Department of Chemical and Biological Engineering, Center for Convergent Biosciences and Medicine, Alabama Life Research Institute, University of Alabama, Tuscaloosa, AL 35487, USA.
| | - Yang Mai
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China.
| |
Collapse
|
4
|
Fernández-Gómez P, Pérez de la Lastra Aranda C, Tosat-Bitrián C, Bueso de Barrio JA, Thompson S, Sot B, Salas G, Somoza Á, Espinosa A, Castellanos M, Palomo V. Nanomedical research and development in Spain: improving the treatment of diseases from the nanoscale. Front Bioeng Biotechnol 2023; 11:1191327. [PMID: 37545884 PMCID: PMC10401050 DOI: 10.3389/fbioe.2023.1191327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/23/2023] [Indexed: 08/08/2023] Open
Abstract
The new and unique possibilities that nanomaterials offer have greatly impacted biomedicine, from the treatment and diagnosis of diseases, to the specific and optimized delivery of therapeutic agents. Technological advances in the synthesis, characterization, standardization, and therapeutic performance of nanoparticles have enabled the approval of several nanomedicines and novel applications. Discoveries continue to rise exponentially in all disease areas, from cancer to neurodegenerative diseases. In Spain, there is a substantial net of researchers involved in the development of nanodiagnostics and nanomedicines. In this review, we summarize the state of the art of nanotechnology, focusing on nanoparticles, for the treatment of diseases in Spain (2017-2022), and give a perspective on the future trends and direction that nanomedicine research is taking.
Collapse
Affiliation(s)
- Paula Fernández-Gómez
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
| | - Carmen Pérez de la Lastra Aranda
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
- Centro de Investigaciones Biológicas Margarita Salas-CSIC, Madrid, Spain
| | - Carlota Tosat-Bitrián
- Centro de Investigaciones Biológicas Margarita Salas-CSIC, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Sebastián Thompson
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
| | - Begoña Sot
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Unidad de Innovación Biomédica, Madrid, Spain
- Advanced Therapies Unit, Instituto de Investigación Sanitaria Fundación Jiménez Díaz (IIS-FJ UAM), Madrid, Spain
| | - Gorka Salas
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
- Unidad Asociada al Centro Nacional de Biotecnología (CSIC), Madrid, Spain
| | - Álvaro Somoza
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
- Unidad Asociada al Centro Nacional de Biotecnología (CSIC), Madrid, Spain
| | - Ana Espinosa
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
- Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, Madrid, Spain
| | - Milagros Castellanos
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
| | - Valle Palomo
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA Nanociencia), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
- Unidad Asociada al Centro Nacional de Biotecnología (CSIC), Madrid, Spain
| |
Collapse
|
5
|
Li S, Wang Y, Wang S, Xie J, Fu T, Li S. In situ gelling hydrogel loaded with berberine liposome for the treatment of biofilm-infected wounds. Front Bioeng Biotechnol 2023; 11:1189010. [PMID: 37324421 PMCID: PMC10266532 DOI: 10.3389/fbioe.2023.1189010] [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: 03/18/2023] [Accepted: 05/22/2023] [Indexed: 06/17/2023] Open
Abstract
Background: In recent years, the impact of bacterial biofilms on traumatic wounds and the means to combat them have become a major research topic in the field of medicine. The eradication of biofilms formed by bacterial infections in wounds has always been a huge challenge. Herein, we developed a hydrogel with the active ingredient berberine hydrochloride liposomes to disrupt the biofilm and thereby accelerate the healing of infected wounds in mice. Methods: We determined the ability of berberine hydrochloride liposomes to eradicate the biofilm by means of studies such as crystalline violet staining, measuring the inhibition circle, and dilution coating plate method. Encouraged by the in vitro efficacy, we chose to coat the berberine hydrochloride liposomes on the Poloxamer range of in-situ thermosensitive hydrogels to allow fuller contact with the wound surface and sustained efficacy. Eventually, relevant pathological and immunological analyses were carried out on wound tissue from mice treated for 14 days. Results: The final results show that the number of wound tissue biofilms decreases abruptly after treatment and that the various inflammatory factors in them are significantly reduced within a short period. In the meantime, the number of collagen fibers in the treated wound tissue, as well as the proteins involved in healing in the wound tissue, showed significant differences compared to the model group. Conclusion: From the results, we found that berberine liposome gel can accelerate wound healing in Staphylococcus aureus infections by inhibiting the inflammatory response and promoting re-epithelialization as well as vascular regeneration. Our work exemplifies the efficacy of liposomal isolation of toxins. This innovative antimicrobial strategy opens up new perspectives for tackling drug resistance and fighting wound infections.
Collapse
Affiliation(s)
- Sipan Li
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yongan Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Siting Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jianjun Xie
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tingming Fu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shaoguang Li
- Microsurgery Department of Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, Beijing, China
| |
Collapse
|
6
|
Limayem A, Mehta M, Kondos N, Kaushal D, Azam FB, Chellappan S, Qin N, Zhou Q. Evaluation of bactericidal effects of silver hydrosol nanotherapeutics against Enterococcus faecium 1449 drug resistant biofilms. Front Cell Infect Microbiol 2023; 12:1095156. [PMID: 36710982 PMCID: PMC9875038 DOI: 10.3389/fcimb.2022.1095156] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 12/20/2022] [Indexed: 01/13/2023] Open
Abstract
Introduction Silver (Ag) nanoparticles (NPs) are well documented for their broad-spectrum bactericidal effects. This study aimed to test the effect of bioactive Ag-hydrosol NPs on drug-resistant E. faecium 1449 strain and explore the use of artificial intelligence (AI) for automated detection of the bacteria. Methods The formation of E. faecium 1449 biofilms in the absence and presence of Ag-hydrosol NPs at different concentrations ranging from 12.4 mg/L to 123 mg/L was evaluated using a 3-dimentional culture system. The biofilm reduction was evaluated using the confocal microscopy in addition to the Transmission Electronic Microscopy (TEM) visualization and spectrofluorimetric quantification using a Biotek Synergy Neo2 microplate reader. The cytotoxicity of the NPs was evaluated in human nasal epithelial cells using the MTT assay. The AI technique based on Fast Regional Convolutional Neural Network architecture was used for the automated detection of the bacteria. Results Treatment with Ag-hydrosol NPs at concentrations ranging from 12.4 mg/L to 123 mg/L resulted in 78.09% to 95.20% of biofilm reduction. No statistically significant difference in biofilm reduction was found among different batches of Ag-hydrosol NPs. Quantitative concentration-response relationship analysis indicated that Ag-hydrosol NPs exhibited a relative high anti-biofilm activity and low cytotoxicity with an average EC50 and TC50 values of 0.0333 and 6.55 mg/L, respectively, yielding an average therapeutic index value of 197. The AI-assisted TEM image analysis allowed automated detection of E. faecium 1449 with 97% ~ 99% accuracy. Discussion Conclusively, the bioactive Ag-hydrosol NP is a promising nanotherapeutic agent against drug-resistant pathogens. The AI-assisted TEM image analysis was developed with the potential to assess its treatment effect.
Collapse
Affiliation(s)
- Alya Limayem
- Department of Biology, College of Arts & Sciences, University of North Florida, Jacksonville, FL, United States,Department of Pharmaceutical Sciences, Graduate Program, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States,*Correspondence: Alya Limayem, ; Qingyu Zhou,
| | - Mausam Mehta
- Department of Pharmaceutical Sciences, Graduate Program, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States,Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Natalie Kondos
- Department of Pharmaceutical Sciences, Graduate Program, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States,Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Divya Kaushal
- Department of Pharmaceutical Sciences, Graduate Program, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Farhat Binte Azam
- Department of Computer Science & Engineering, College of Engineering, University of South Florida, Tampa, FL, United States
| | - Sriram Chellappan
- Department of Computer Science & Engineering, College of Engineering, University of South Florida, Tampa, FL, United States
| | - Nan Qin
- Department of R&D and Analytical Services, Natural Immunogenics Corporation, Sarasota, FL, United States
| | - Qingyu Zhou
- Department of Pharmaceutical Sciences, Graduate Program, Taneja College of Pharmacy, University of South Florida, Tampa, FL, United States,*Correspondence: Alya Limayem, ; Qingyu Zhou,
| |
Collapse
|