1
|
Forte J, Maurizi L, Fabiano MG, Conte AL, Conte MP, Ammendolia MG, D'Intino E, Catizone A, Gesualdi L, Rinaldi F, Carafa M, Marianecci C, Longhi C. Gentamicin loaded niosomes against intracellular uropathogenic Escherichia coli strains. Sci Rep 2024; 14:10196. [PMID: 38702355 PMCID: PMC11068731 DOI: 10.1038/s41598-024-59144-x] [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: 09/26/2023] [Accepted: 04/08/2024] [Indexed: 05/06/2024] Open
Abstract
Urinary tract infections (UTIs) are the most common bacterial infections and uropathogenic Escherichia coli (UPEC) is the main etiological agent of UTIs. UPEC can persist in bladder cells protected by immunological defenses and antibiotics and intracellular behavior leads to difficulty in eradicating the infection. The aim of this paper is to design, prepare and characterize surfactant-based nanocarriers (niosomes) able to entrap antimicrobial drug and potentially to delivery and release antibiotics into UPEC-infected cells. In order to validate the proposed drug delivery system, gentamicin, was chosen as "active model drug" due to its poor cellular penetration. The niosomes physical-chemical characterization was performed combining different techniques: Dynamic Light Scattering Fluorescence Spectroscopy, Transmission Electron Microscopy. Empty and loaded niosomes were characterized in terms of size, ζ-potential, bilayer features and stability. Moreover, Gentamicin entrapped amount was evaluated, and the release study was also carried out. In addition, the effect of empty and loaded niosomes was studied on the invasion ability of UPEC strains in T24 bladder cell monolayers by Gentamicin Protection Assay and Confocal Microscopy. The observed decrease in UPEC invasion rate leads us to hypothesize a release of antibiotic from niosomes inside the cells. The optimization of the proposed drug delivery system could represent a promising strategy to significatively enhance the internalization of antimicrobial drugs.
Collapse
Affiliation(s)
- Jacopo Forte
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Linda Maurizi
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Maria Gioia Fabiano
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Antonietta Lucia Conte
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Maria Pia Conte
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Maria Grazia Ammendolia
- Centro Nazionale Tecnologie Innovative in Sanità Pubblica, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161, Rome, Italy.
| | - Eleonora D'Intino
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Angela Catizone
- Dipartimento Scienze Anatomiche, Istologiche, Medico Legali e Dell'Apparato Locomotore, Sapienza Università di Roma, Via Scarpa, 16, 00161, Rome, Italy
| | - Luisa Gesualdi
- Dipartimento Scienze Anatomiche, Istologiche, Medico Legali e Dell'Apparato Locomotore, Sapienza Università di Roma, Via Scarpa, 16, 00161, Rome, Italy
| | - Federica Rinaldi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy.
| | - Maria Carafa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Carlotta Marianecci
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| | - Catia Longhi
- Dipartimento di Sanità Pubblica e Malattie Infettive, Sapienza Università di Roma, Piazzale Aldo Moro, 5, 00185, Rome, Italy
| |
Collapse
|
2
|
Shi S, Lu W, Gu X, Lin Q. Efficacy of Gentamicin-Loaded Chitosan Nanoparticles Against Staphylococcus aureus Internalized in Osteoblasts. Microb Drug Resist 2024; 30:196-202. [PMID: 38579161 DOI: 10.1089/mdr.2023.0066] [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: 04/07/2024] Open
Abstract
Staphylococcus aureus, the principal causative agent of osteomyelitis, can be internalized by osteoblasts and thereby escape from immune phagocytes and many kinds of antibiotics. To deliver antibiotics into osteoblasts to kill S. aureus in the intracellular environment, we developed gentamicin-loaded chitosan nanoparticles and evaluated their intracellular bactericidal effect. We found decreased numbers of S. aureus cells in infected osteoblasts treated with gentamicin-loaded chitosan nanoparticles. The cytotoxicity of the nanoparticles was evaluated by CCK-8 assay. There was no significant viability decrease at all tested concentrations. In conclusion, our results provide evidence for the potential use of gentamicin-loaded chitosan nanoparticles to enhance the delivery of gentamicin into cells and for their antibacterial effect against internalized S. aureus in the intracellular environment of osteoblasts.
Collapse
Affiliation(s)
- Sifeng Shi
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Wei Lu
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xu Gu
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Qiang Lin
- Department of Orthopedic Surgery, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| |
Collapse
|
3
|
Bai J, Zuo Z, DuanMu H, Li M, Tong H, Mei Y, Xiao Y, He K, Jiang M, Wang S, Li F. Endosymbiont Tremblaya phenacola influences the reproduction of cotton mealybugs by regulating the mechanistic target of rapamycin pathway. THE ISME JOURNAL 2024; 18:wrae052. [PMID: 38519099 PMCID: PMC11014885 DOI: 10.1093/ismejo/wrae052] [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: 02/02/2024] [Revised: 03/09/2024] [Accepted: 03/20/2024] [Indexed: 03/24/2024]
Abstract
The intricate evolutionary dynamics of endosymbiotic relationships result in unique characteristics among the genomes of symbionts, which profoundly influence host insect phenotypes. Here, we investigated an endosymbiotic system in Phenacoccus solenopsis, a notorious pest of the subfamily Phenacoccinae. The endosymbiont, "Candidatus Tremblaya phenacola" (T. phenacola PSOL), persisted throughout the complete life cycle of female hosts and was more active during oviposition, whereas there was a significant decline in abundance after pupation in males. Genome sequencing yielded an endosymbiont genome of 221.1 kb in size, comprising seven contigs and originating from a chimeric arrangement between betaproteobacteria and gammaproteobacteria. A comprehensive analysis of amino acid metabolic pathways demonstrated complementarity between the host and endosymbiont metabolism. Elimination of T. phenacola PSOL through antibiotic treatment significantly decreased P. solenopsis fecundity. Weighted gene coexpression network analysis demonstrated a correlation between genes associated with essential amino acid synthesis and those associated with host meiosis and oocyte maturation. Moreover, altering endosymbiont abundance activated the host mechanistic target of rapamycin pathway, suggesting that changes in the amino acid abundance affected the host reproductive capabilities via this signal pathway. Taken together, these findings demonstrate a mechanism by which the endosymbiont T. phenacola PSOL contributed to high fecundity in P. solenopsis and provide new insights into nutritional compensation and coevolution of the endosymbiotic system.
Collapse
Affiliation(s)
- Jianyang Bai
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zhangqi Zuo
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Haonan DuanMu
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Meizhen Li
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Haojie Tong
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yang Mei
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yiqi Xiao
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Kang He
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Mingxing Jiang
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Shuping Wang
- Technical Centre for Animal, Plant & Food Inspection and Quarantine, Shanghai Customs, Shanghai 200135, China
| | - Fei Li
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| |
Collapse
|
4
|
Borenstein JT, Cummins G, Dutta A, Hamad E, Hughes MP, Jiang X, Lee HH, Lei KF, Tang XS, Zheng Y, Chen J. Bionanotechnology and bioMEMS (BNM): state-of-the-art applications, opportunities, and challenges. LAB ON A CHIP 2023; 23:4928-4949. [PMID: 37916434 DOI: 10.1039/d3lc00296a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
The development of micro- and nanotechnology for biomedical applications has defined the cutting edge of medical technology for over three decades, as advancements in fabrication technology developed originally in the semiconductor industry have been applied to solving ever-more complex problems in medicine and biology. These technologies are ideally suited to interfacing with life sciences, since they are on the scale lengths as cells (microns) and biomacromolecules (nanometers). In this paper, we review the state of the art in bionanotechnology and bioMEMS (collectively BNM), including developments and challenges in the areas of BNM, such as microfluidic organ-on-chip devices, oral drug delivery, emerging technologies for managing infectious diseases, 3D printed microfluidic devices, AC electrokinetics, flexible MEMS devices, implantable microdevices, paper-based microfluidic platforms for cellular analysis, and wearable sensors for point-of-care testing.
Collapse
Affiliation(s)
| | - Gerard Cummins
- School of Engineering, University of Birmingham, Edgbaston, B15 2TT, UK.
| | - Abhishek Dutta
- Department of Electrical & Computer Engineering, University of Connecticut, USA.
| | - Eyad Hamad
- Biomedical Engineering Department, School of Applied Medical Sciences, German Jordanian University, Amman, Jordan.
| | - Michael Pycraft Hughes
- Department of Biomedical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates.
| | - Xingyu Jiang
- Department of Biomedical Engineering, Southern University of Science and Technology, China.
| | - Hyowon Hugh Lee
- Weldon School of Biomedical Engineering, Center for Implantable Devices, Purdue University, West Lafayette, IN, USA.
| | | | | | | | - Jie Chen
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada.
| |
Collapse
|
5
|
Ayanda OS, Quadri RO, Adewuyi SO, Mmuoegbulam AO, Okezie O, Mohammed SE, Durumin-Iya NI, Lawal OS, Popoola KM, Adekola FA. Multidimensional applications and potential health implications of nanocomposites. JOURNAL OF WATER AND HEALTH 2023; 21:1110-1142. [PMID: 37632385 PMCID: wh_2023_141 DOI: 10.2166/wh.2023.141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/28/2023]
Abstract
This study reviews the concept, classifications, and techniques involved in the synthesis of nanocomposites. The environmental and health implications of nanoparticles and composite materials were detailed, as well as the applications of nanocomposites in water remediation, antibacterial application, and printed circuit boards. The study gave insights into the challenges of water pollution treatment and provided a broad list of nanocomposites that have been explored for water remediation. Moreover, the emergence of multi-drug resistance to many antibiotics has made current antibiotics inadequate in the treatment of disease. This has engineered the development of alternative strategies in the drug industries for the production of effective therapeutic agents, comprising nanocomposites with antibacterial agents. The new therapeutic agents known as nanoantibiotics are more efficient and have paved the way to handle the challenges of antibiotic resistance. In printed circuit boards, nanocomposites have shown promising applications because of their distinct mechanical, thermal, and electrical characteristics. The uniqueness of the write-up is that it provides a broad explanation of the concept, synthesis, application, toxicity, and harmful effects of nanocomposites. Thus, it will provide all-inclusive awareness to readers to identify research gaps and motivate researchers to synthesize novel nanocomposites for use in various fields.
Collapse
Affiliation(s)
- Olushola S Ayanda
- Nanoscience Research Unit, Department of Industrial Chemistry, Federal University Oye-Ekiti, Oye-Ekiti, Ekiti State P.M.B 373, Nigeria E-mail:
| | - Rukayat O Quadri
- Nanoscience Research Unit, Department of Industrial Chemistry, Federal University Oye-Ekiti, Oye-Ekiti, Ekiti State P.M.B 373, Nigeria
| | - Sulaiman O Adewuyi
- Nanoscience Research Unit, Department of Industrial Chemistry, Federal University Oye-Ekiti, Oye-Ekiti, Ekiti State P.M.B 373, Nigeria
| | - Augusta O Mmuoegbulam
- Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar, Nigeria
| | - Onyemaechi Okezie
- Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar, Nigeria
| | - Sa'adatu E Mohammed
- Department of Chemistry, Federal University Dutse, Dutse, Jigawa State PMB 7156, Nigeria
| | - Naseer I Durumin-Iya
- Department of Chemistry, Federal University Dutse, Dutse, Jigawa State PMB 7156, Nigeria
| | - Olayide S Lawal
- Nanoscience Research Unit, Department of Industrial Chemistry, Federal University Oye-Ekiti, Oye-Ekiti, Ekiti State P.M.B 373, Nigeria
| | - Kehinde M Popoola
- Department of Plant Science and Biotechnology, Federal University Oye-Ekiti, Oye-Ekiti, Ekiti State, Nigeria
| | - Folahan A Adekola
- Department of Industrial Chemistry, University of Ilorin, Ilorin, Nigeria
| |
Collapse
|
6
|
Najafloo R, Imani R, Behyari M, Nour S. Synthesis and Characterization of Thymol-Loaded Niosomal Film for the Prevention of Implant-Related Infection. IRANIAN BIOMEDICAL JOURNAL 2023; 27:117-25. [PMID: 37070674 PMCID: PMC10314763 DOI: 10.61186/ibj.3788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 01/30/2023] [Indexed: 12/17/2023]
Abstract
Background Infection is one of the significant challenges in medical implant-related surgeries. Despite systemic antibiotic therapies, bacterial growth after implantation may cause implant failure. Nowadays, unlike the systemic therapy, local controlled release of antibiotic agents is considered an effective approach for the prevention of implant-related infections. The present study aimed to develop a niosomal nanocarrier incorporated into fibroin films for local and continuous delivery of thymol, a natural plant-derived antimicrobial agent for preventing infections caused by implant-related. Methods Niosomes containing thymol were prepared by thin-film hydration technique. Thymol sustained release from the prepared films was assessed for 14 days. Antibacterial activities of the synthesized films were also evaluated by the agar diffusion technique against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus. Results The release behavior from the niosomal thymol films showed a sustained manner, in which the amount of the released thymol reached 40% after 14 days. The films containing thymol with and without niosome showed a significant viability against L929 fibroblast cells compared to other groups after 24 and 48 h, using MTT assay. Also, samples exhibited potent antibacterial activity against Gram-negative and Gram-positive bacteria. Conclusion The results of this study demonstrate that the niosomal thymol-loaded fibroin film is a promising candidate for the controlled release of thymol and prevention of implant-related infection.
Collapse
Affiliation(s)
| | - Rana Imani
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran159163-4311, Iran
| | | | | |
Collapse
|
7
|
Nazli A, He DL, Liao D, Khan MZI, Huang C, He Y. Strategies and progresses for enhancing targeted antibiotic delivery. Adv Drug Deliv Rev 2022; 189:114502. [PMID: 35998828 DOI: 10.1016/j.addr.2022.114502] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 08/10/2022] [Accepted: 08/16/2022] [Indexed: 01/24/2023]
Abstract
Antibiotic resistance is a global health issue and a potential risk for society. Antibiotics administered through conventional formulations are devoid of targeting effect and often spread to various undesired body sites, leading to sub-lethal concentrations at the site of action and thus resulting in emergence of resistance, as well as side effects. Moreover, we have a very slim antibiotic pipeline. Drug-delivery systems have been designed to control the rate, time, and site of drug release, and innovative approaches for antibiotic delivery provide a glint of hope for addressing these issues. This review elaborates different delivery strategies and approaches employed to overcome the limitations of conventional antibiotic therapy. These include antibiotic conjugates, prodrugs, and nanocarriers for local and targeted antibiotic release. In addition, a wide range of stimuli-responsive nanocarriers and biological carriers for targeted antibiotic delivery are discussed. The potential advantages and limitations of targeted antibiotic delivery strategies are described along with possible solutions to avoid these limitations. A number of antibiotics successfully delivered through these approaches with attained outcomes and potentials are reviewed.
Collapse
Affiliation(s)
- Adila Nazli
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China
| | - David L He
- College of Chemistry, University of California, Berkeley, CA 94720, United States
| | - Dandan Liao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China
| | | | - Chao Huang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China.
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China.
| |
Collapse
|
8
|
Li X, Montague EC, Pollinzi A, Lofts A, Hoare T. Design of Smart Size-, Surface-, and Shape-Switching Nanoparticles to Improve Therapeutic Efficacy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104632. [PMID: 34936204 DOI: 10.1002/smll.202104632] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/04/2021] [Indexed: 05/21/2023]
Abstract
Multiple biological barriers must be considered in the design of nanomedicines, including prolonged blood circulation, efficient accumulation at the target site, effective penetration into the target tissue, selective uptake of the nanoparticles into target cells, and successful endosomal escape. However, different particle sizes, surface chemistries, and sometimes shapes are required to achieve the desired transport properties at each step of the delivery process. In response, this review highlights recent developments in the design of switchable nanoparticles whose size, surface chemistry, shape, or a combination thereof can be altered as a function of time, a disease-specific microenvironment, and/or via an externally applied stimulus to enable improved optimization of nanoparticle properties in each step of the delivery process. The practical use of such nanoparticles in chemotherapy, bioimaging, photothermal therapy, and other applications is also discussed.
Collapse
Affiliation(s)
- Xiaoyun Li
- Department of Chemical Engineering, McMaster University, 1280 Main Street, Hamilton, ON L8S 4L8, Canada
- State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, 381 Wushan Road, Guangzhou, Guangdong, 510640, China
| | - E Coulter Montague
- Department of Chemical Engineering, McMaster University, 1280 Main Street, Hamilton, ON L8S 4L8, Canada
| | - Angela Pollinzi
- Department of Chemical Engineering, McMaster University, 1280 Main Street, Hamilton, ON L8S 4L8, Canada
| | - Andrew Lofts
- School of Biomedical Engineering, McMaster University, 1280 Main Street, Hamilton, ON L8S 4L8, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main Street, Hamilton, ON L8S 4L8, Canada
- School of Biomedical Engineering, McMaster University, 1280 Main Street, Hamilton, ON L8S 4L8, Canada
| |
Collapse
|
9
|
Subramaniam S, Joyce P, Thomas N, Prestidge CA. Bioinspired drug delivery strategies for repurposing conventional antibiotics against intracellular infections. Adv Drug Deliv Rev 2021; 177:113948. [PMID: 34464665 DOI: 10.1016/j.addr.2021.113948] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 08/04/2021] [Accepted: 08/23/2021] [Indexed: 12/11/2022]
Abstract
Bacteria have developed a wealth of strategies to avoid and resist the action of antibiotics, one of which involves pathogens invading and forming reservoirs within host cells. Due to the poor cell membrane permeability, stability and retention of conventional antibiotics, this renders current treatments largely ineffective, since achieving a therapeutically relevant antibiotic concentration at the site of intracellular infection is not possible. To overcome such challenges, current antibiotics are 'repurposed' via reformulation using micro- or nano-carrier systems that effectively encapsulate and deliver therapeutics across cellular membranes of infected cells. Bioinspired materials that imitate the uptake of biological particulates and release antibiotics in response to natural stimuli are recently explored to improve the targeting and specificity of this 'nanoantibiotic' approach. In this review, the mechanisms of internalization and survival of intracellular bacteria are elucidated, effectively accentuating the current treatment challenges for intracellular infections and the implications for repurposing conventional antibiotics. Key case studies of nanoantibiotics that have drawn inspiration from natural biological particles and cellular uptake pathways to effectively eradicate intracellular pathogens are detailed, clearly highlighting the rational for harnessing bioinspired drug delivery strategies.
Collapse
Affiliation(s)
- Santhni Subramaniam
- University of South Australia, UniSA Clinical and Health Sciences, SA 5000, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Adelaide, SA 5000, Australia
| | - Paul Joyce
- University of South Australia, UniSA Clinical and Health Sciences, SA 5000, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Adelaide, SA 5000, Australia
| | - Nicky Thomas
- University of South Australia, UniSA Clinical and Health Sciences, SA 5000, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Adelaide, SA 5000, Australia; The Basil Hetzel Institute for Translational Health Research, Woodville, SA 5011, Australia
| | - Clive A Prestidge
- University of South Australia, UniSA Clinical and Health Sciences, SA 5000, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Adelaide, SA 5000, Australia.
| |
Collapse
|
10
|
Study on Significance of Receptor Targeting in Killing of Intracellular Bacteria with Membrane‐Impermeable Antibiotics. ADVANCED THERAPEUTICS 2021. [DOI: 10.1002/adtp.202100168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
11
|
Kirtane AR, Verma M, Karandikar P, Furin J, Langer R, Traverso G. Nanotechnology approaches for global infectious diseases. NATURE NANOTECHNOLOGY 2021; 16:369-384. [PMID: 33753915 DOI: 10.1038/s41565-021-00866-8] [Citation(s) in RCA: 150] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 01/26/2021] [Indexed: 05/20/2023]
Abstract
Infectious diseases are a major driver of morbidity and mortality globally. Treatment of malaria, tuberculosis and human immunodeficiency virus infection are particularly challenging, as indicated by the ongoing transmission and high mortality associated with these diseases. The formulation of new and existing drugs in nano-sized carriers promises to overcome several challenges associated with the treatment of these diseases, including low on-target bioavailability, sub-therapeutic drug accumulation in microbial sanctuaries and reservoirs, and low patient adherence due to drug-related toxicities and extended therapeutic regimens. Further, nanocarriers can be used for formulating vaccines, which represent a major weapon in our fight against infectious diseases. Here we review the current burden of infectious diseases with a focus on major drivers of morbidity and mortality. We then highlight how nanotechnology could aid in improving existing treatment modalities. We summarize our progress so far and outline potential future directions to maximize the impact of nanotechnology on the global population.
Collapse
Affiliation(s)
- Ameya R Kirtane
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Malvika Verma
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Tata Center for Technology and Design, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Paramesh Karandikar
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jennifer Furin
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
| | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Tata Center for Technology and Design, Massachusetts Institute of Technology, Cambridge, MA, USA
- Media Lab, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Giovanni Traverso
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
- Tata Center for Technology and Design, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
| |
Collapse
|
12
|
Najafloo R, Baheiraei N, Imani R. Synthesis and characterization of collagen/calcium phosphate scaffolds incorporating antibacterial agent for bone tissue engineering application. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520966692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In the present study, we developed a novel niosomal nanocarrier embedded into a collagen/β- tricalcium phosphate (Col/β-TCP) scaffold for the local delivery of thymol as a natural anti-bacterial reagent. The niosomal Col/β-TCP (N-Col/β-TCP) scaffolds with different weight ratios of β-TCP to Col were prepared by freeze-drying. The antimicrobial activities of the prepared samples against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus were assessed by agar diffusion method. The release profile of niosomal thymol from the optimized composite scaffolds showed a sustained profile where 66% of the loaded thymol was released over 30 days. The compressive modulus of niosome added scaffolds with an equal ratio of β-TCP and Col was calculated as 972±1.3KPa. This scaffold showed significantly higher values of cell viability (as evaluated by an MTT assay) against L929 fibroblasts than a scaffold without niosomal thymol after 24 and 72 h. Among synthesized samples, Col/β-TCP1 showed the greatest effectiveness of anti-bacterial activity toward Gram-positive and Gram-negative bacteria with higher activity against Gram-positive ones. The results of this study highlight the potential of niosomal-thymol loaded Col/β-TCP1 scaffold as an anti-bacterial bone substitute for possible osteomyelitis treatment.
Collapse
Affiliation(s)
- Raziyeh Najafloo
- Department of bio-informatics, Faculty of Interdisciplinary Science and Technology, Tarbiat Modares University, Tehran, Iran
| | - Nafiseh Baheiraei
- Tissue Engineering and Applied Cell Sciences Division, Department of Hematology, Faculty of Medical Sciences,Tarbiat Modares University, Tehran, Iran
| | - Rana Imani
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran polytechnic), Tehran, Iran
| |
Collapse
|
13
|
Devnarain N, Osman N, Fasiku VO, Makhathini S, Salih M, Ibrahim UH, Govender T. Intrinsic stimuli-responsive nanocarriers for smart drug delivery of antibacterial agents-An in-depth review of the last two decades. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2020; 13:e1664. [PMID: 32808486 DOI: 10.1002/wnan.1664] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/30/2020] [Accepted: 07/20/2020] [Indexed: 12/18/2022]
Abstract
Antibiotic resistance due to suboptimal targeting and inconsistent antibiotic release at bacterial infection sites has driven the formulation of stimuli-responsive nanocarriers for antibacterial therapy. Unlike conventional nanocarriers, stimuli-responsive nanocarriers have the ability to specifically enhance targeting and drug release profiles. There has been a significant escalation in the design and development of novel nanomaterials worldwide; in particular, intrinsic stimuli-responsive antibiotic nanocarriers, due to their enhanced activity, improved targeted delivery, and superior potential for bacterial penetration and eradication. Herein, we provide an extensive and critical review of pH-, enzyme-, redox-, and ionic microenvironment-responsive nanocarriers that have been reported in literature to date, with an emphasis on the mechanisms of drug release, the nanomaterials used, the nanosystems constructed and the antibacterial efficacy of the nanocarriers. The review also highlights further avenues of research for optimizing their potential and commercialization. This review confirms the potential of intrinsic stimuli-responsive nanocarriers for enhanced drug delivery and antibacterial killing. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease Nanotechnology Approaches to Biology > Nanoscale Systems in Biology.
Collapse
Affiliation(s)
- Nikita Devnarain
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Nawras Osman
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Victoria Oluwaseun Fasiku
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Sifiso Makhathini
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Mohammed Salih
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Usri H Ibrahim
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| |
Collapse
|
14
|
Multi-functionalized nanocarriers targeting bacterial reservoirs to overcome challenges of multi drug-resistance. ACTA ACUST UNITED AC 2020; 28:319-332. [PMID: 32193748 DOI: 10.1007/s40199-020-00337-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 03/11/2020] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Infectious diseases associated with intracellular bacteria such as Staphylococcus aureus, Salmonella typhimurium and Mycobacterium tuberculosis are important public health concern. Emergence of multi and extensively drug-resistant bacterial strains have made it even more obstinate to offset such infections. Bacteria residing within intracellular compartments provide additional barriers to effective treatment. METHOD Information provided in this review has been collected by accessing various electronic databases including Google scholar, Web of science, Scopus, and Nature index. Search was performed using keywords nanoparticles, intracellular targeting, multidrug resistance, Staphylococcus aureus; Salmonella typhimurium; Mycobacterium tuberculosis. Information gathered was categorized into three major sections as 'Intracellular targeting of Staphylococcus aureus, Intracellular targeting of Salmonella typhimurium and Intracellular targeting of Mycobacterium tuberculosis' using variety of nanocarrier systems. RESULTS Conventional management for infectious diseases typically comprises of long-term treatment with a combination of antibiotics, which may lead to side effects and decreased patient compliance. A wide range of multi-functionalized nanocarrier systems have been studied for delivery of drugs within cellular compartments where bacteria including Staphylococcus aureus, Salmonella typhimurium and Mycobacterium tuberculosis reside. Such carrier systems along with targeted delivery have been utilized for sustained and controlled delivery of drugs. These strategies have been found useful in overcoming the drawbacks of conventional treatments including multi-drug resistance. CONCLUSION Development of multi-functional nanocargoes encapsulating antibiotics that are proficient in targeting and releasing drug into infected reservoirs seems to be a promising strategy to circumvent the challenge of multidrug resistance. Graphical abstract.
Collapse
|
15
|
Menina S, Eisenbeis J, Kamal MAM, Koch M, Bischoff M, Gordon S, Loretz B, Lehr C. Bioinspired Liposomes for Oral Delivery of Colistin to Combat Intracellular Infections by Salmonella enterica. Adv Healthc Mater 2019; 8:e1900564. [PMID: 31328434 DOI: 10.1002/adhm.201900564] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/27/2019] [Indexed: 01/07/2023]
Abstract
Bacterial invasion into eukaryotic cells and the establishment of intracellular infection has proven to be an effective means of resisting antibiotic action, as anti-infective agents commonly exhibit a poor permeability across the host cell membrane. Encapsulation of anti-infectives into nanoscaled delivery systems, such as liposomes, is shown to result in an enhancement of intracellular delivery. The aim of the current work is, therefore, to formulate colistin, a poorly permeable anti-infective, into liposomes suitable for oral delivery, and to functionalize these carriers with a bacteria-derived invasive moiety to enhance their intracellular delivery. Different combinations of phospholipids and cholesterol are explored to optimize liposomal drug encapsulation and stability in biorelevant media. These liposomes are then surface-functionalized with extracellular adherence protein (Eap), derived from Staphylococcus aureus. Treatment of HEp-2 and Caco-2 cells infected with Salmonella enterica using colistin-containing, Eap-functionalized liposomes resulted in a significant reduction of intracellular bacteria, in comparison to treatment with nonfunctionalized liposomes as well as colistin alone. This indicates that such bio-invasive carriers are able to facilitate intracellular delivery of colistin, as necessary for intracellular anti-infective activity. The developed Eap-functionalized liposomes, therefore, present a promising strategy for improving the therapy of intracellular infections.
Collapse
Affiliation(s)
- Sara Menina
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)Helmholtz Center for Infection Research (HZI) Saarbrücken 66123 Germany
- Department of PharmacySaarland University Saarbrücken 66123 Germany
| | - Janina Eisenbeis
- Institute of Medical Microbiology and HygieneSaarland University Homburg 66421 Germany
| | - Mohamed Ashraf M. Kamal
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)Helmholtz Center for Infection Research (HZI) Saarbrücken 66123 Germany
| | - Marcus Koch
- Institute for New MaterialsSaarland University Saarbrücken 66123 Germany
| | - Markus Bischoff
- Institute of Medical Microbiology and HygieneSaarland University Homburg 66421 Germany
| | - Sarah Gordon
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)Helmholtz Center for Infection Research (HZI) Saarbrücken 66123 Germany
- School of Pharmacy and Biomolecular SciencesJohn Moores University Liverpool L3 3AF UK
| | - Brigitta Loretz
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)Helmholtz Center for Infection Research (HZI) Saarbrücken 66123 Germany
| | - Claus‐Michael Lehr
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)Helmholtz Center for Infection Research (HZI) Saarbrücken 66123 Germany
- Department of PharmacySaarland University Saarbrücken 66123 Germany
| |
Collapse
|
16
|
Kuroki A, Kengmo Tchoupa A, Hartlieb M, Peltier R, Locock KES, Unnikrishnan M, Perrier S. Targeting intracellular, multi-drug resistant Staphylococcus aureus with guanidinium polymers by elucidating the structure-activity relationship. Biomaterials 2019; 217:119249. [PMID: 31279102 DOI: 10.1016/j.biomaterials.2019.119249] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/20/2019] [Accepted: 06/05/2019] [Indexed: 11/29/2022]
Abstract
Intracellular persistence of bacteria represents a clinical challenge as bacteria can thrive in an environment protected from antibiotics and immune responses. Novel targeting strategies are critical in tackling antibiotic resistant infections. Synthetic antimicrobial peptides (SAMPs) are interesting candidates as they exhibit a very high antimicrobial activity. We first compared the activity of a library of ammonium and guanidinium polymers with different sequences (statistical, tetrablock and diblock) synthesized by RAFT polymerization against methicillin-resistant S. aureus (MRSA) and methicillin-sensitive strains (MSSA). As the guanidinium SAMPs were the most potent, they were used to treat intracellular S. aureus in keratinocytes. The diblock structure was the most active, reducing the amount of intracellular MSSA and MRSA by two-fold. We present here a potential treatment for intracellular, multi-drug resistant bacteria, using a simple and scalable strategy.
Collapse
Affiliation(s)
- Agnès Kuroki
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | | | - Matthias Hartlieb
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Raoul Peltier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Katherine E S Locock
- CSIRO Manufacturing, Clayton, Victoria, 3168, Australia; Department of Chemical and Biomolecular Engineering, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | | | - Sébastien Perrier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK; Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK; Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria, 3052, Australia.
| |
Collapse
|
17
|
Bera S, Mondal D. A role for ultrasound in the fabrication of carbohydrate-supported nanomaterials. J Ultrasound 2019; 22:131-156. [PMID: 30811013 PMCID: PMC6531602 DOI: 10.1007/s40477-019-00363-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 01/24/2019] [Indexed: 01/02/2023] Open
Abstract
Nowadays, sonication is a well-known technique for the fabrication and surface modification of nanomaterials with various sizes, shapes, and chemical and physical properties. In addition to conducting catalyst-mediated chemical reactions and enhancing medicinal properties, such as antibacterial and antifungal activities, nanoparticles made from biodegradable and biocompatible carbohydrate coatings and glycosidic frameworks offer exciting opportunities for the development of biomaterials, optical sensors, packaging materials, agricultural products, and food. This review article discusses the synthesis of carbohydrate-coated nanoparticles by ultrasound radiation as well as the many applications of these nanoparticles.
Collapse
Affiliation(s)
- Smritilekha Bera
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, 382030, India.
| | - Dhananjoy Mondal
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, 382030, India
| |
Collapse
|
18
|
Canaparo R, Foglietta F, Giuntini F, Della Pepa C, Dosio F, Serpe L. Recent Developments in Antibacterial Therapy: Focus on Stimuli-Responsive Drug-Delivery Systems and Therapeutic Nanoparticles. Molecules 2019; 24:E1991. [PMID: 31137622 PMCID: PMC6572634 DOI: 10.3390/molecules24101991] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 12/14/2022] Open
Abstract
Conventional drugs used for antibacterial therapy display several limitations. This is not due to antibiotics being ineffective, but rather due to their low bioavailability, limited penetration to sites of infection and the rise of drug-resistant bacteria. Although new delivery systems (e.g., nanoparticles) that are loaded with antibacterial drugs have been designed to overcome these limitations, therapeutic efficacy does not seem to have improved. Against this backdrop, stimuli-responsive antibiotic-loaded nanoparticles and materials with antimicrobial properties (nanoantibiotics) present the ability to enhance therapeutic efficacy, while also reducing drug resistance and side effects. These stimuli can either be exogenous (e.g., light, ultrasound) or endogenous (e.g., pH, variation in redox gradient, enzymes). This promising therapeutic approach relies on advances in materials science and increased knowledge of microorganism growth and biofilm formation. This review provides an overview in the field of antibacterial drug-delivery systems and nanoantibiotics that benefit from a response to specific triggers, and also presents a number of future prospects.
Collapse
Affiliation(s)
- Roberto Canaparo
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy.
| | - Federica Foglietta
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy.
| | - Francesca Giuntini
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool L3 2AJ, UK.
| | - Carlo Della Pepa
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy.
| | - Franco Dosio
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy.
| | - Loredana Serpe
- Department of Drug Science and Technology, University of Torino, 10125 Torino, Italy.
| |
Collapse
|
19
|
Bai F, McCormack RM, Hower S, Plano GV, Lichtenheld MG, Munson GP. Perforin-2 Breaches the Envelope of Phagocytosed Bacteria Allowing Antimicrobial Effectors Access to Intracellular Targets. THE JOURNAL OF IMMUNOLOGY 2018; 201:2710-2720. [PMID: 30249808 DOI: 10.4049/jimmunol.1800365] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 08/28/2018] [Indexed: 01/24/2023]
Abstract
Perforin-2, the product of the MPEG1 gene, limits the spread and dissemination of bacterial pathogens in vivo. It is highly expressed in murine and human phagocytes, and macrophages lacking Perforin-2 are compromised in their ability to kill phagocytosed bacteria. In this study, we used Salmonella enterica serovar Typhimurium as a model intracellular pathogen to elucidate the mechanism of Perforin-2's bactericidal activity. In vitro Perforin-2 was found to facilitate the degradation of Ags contained within the envelope of phagocytosed bacteria. In contrast, degradation of a representative surface Ag was found to be independent of Perforin-2. Consistent with our in vitro results, a protease-sensitive, periplasmic superoxide dismutase (SodCII) contributed to the virulence of S. Typhimurium in Perforin-2 knockout but not wild-type mice. In aggregate, our studies indicate that Perforin-2 breaches the envelope of phagocytosed bacteria, facilitating the delivery of proteases and other antimicrobial effectors to sites within the bacterial cell.
Collapse
Affiliation(s)
- Fangfang Bai
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136
| | - Ryan M McCormack
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136
| | - Suzanne Hower
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136
| | - Gregory V Plano
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136
| | - Mathias G Lichtenheld
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136
| | - George P Munson
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL 33136
| |
Collapse
|
20
|
Su FY, Chen J, Son HN, Kelly AM, Convertine AJ, Ratner DM, Stayton PS. Polymer-augmented liposomes enhancing antibiotic delivery against intracellular infections. Biomater Sci 2018; 6:1976-1985. [PMID: 29850694 PMCID: PMC6195317 DOI: 10.1039/c8bm00282g] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pulmonary intracellular infections, such as tuberculosis, anthrax, and tularemia, have remained a significant challenge to conventional antibiotic therapy. Ineffective antibiotic treatment of these infections can lead not only to undesired side effects, but also to the emergence of antibiotic resistance. Aminoglycosides (e.g., streptomycin) have long been part of the therapeutic regiment for many pulmonary intracellular infections. Their bioavailability for intracellular bacterial pools, however, is limited by poor membrane permeability and rapid elimination. To address this challenge, polymer-augmented liposomes (PALs) were developed to provide improved cytosolic delivery of streptomycin to alveolar macrophages, an important host cell for intracellular pathogens. A multifunctional diblock copolymer was engineered to functionalize PALs with carbohydrate-mediated targeting, pH-responsive drug release, and endosomal release activity with a single functional polymer that replaces the pegylated lipid component to simplify the liposome formulation. The pH-sensing functionality enabled PALs to provide enhanced release of streptomycin under endosomal pH conditions (70% release in 6 hours) with limited release at physiological pH 7.4 (16%). The membrane-destabilizing activity connected to endosomal release was characterized in a hemolysis assay and PALs displayed a sharp pH profile across the endosomal pH development target range. The direct connection of this membrane-destabilizing pH profile to model drug release was demonstrated in an established pyranine/p-xylene bispyridinium dibromide (DPX) fluorescence dequenching assay. PALs displayed similar sharp pH-responsive release, whereas PEGylated control liposomes did not, and similar profiles were then shown for streptomycin release. The mannose-targeting capability of the PALs was also demonstrated with 2.5 times higher internalization compared to non-targeted PEGylated liposomes. Finally, the streptomycin-loaded PALs were shown to have a significantly improved intracellular antibacterial activity in a Francisella-macrophage co-culture model, compared with free streptomycin or streptomycin delivered by control PEGylated liposomes (13× and 16×, respectively). This study suggests the potential of PALs as a useful platform to deliver antibiotics for the treatment of intracellular macrophage infections.
Collapse
Affiliation(s)
- Fang-Yi Su
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Jasmin Chen
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Hye-Nam Son
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Abby M. Kelly
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | | | - Daniel M. Ratner
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Patrick S. Stayton
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| |
Collapse
|
21
|
Abstract
Understanding the interplay between bacterial pathogens and antimicrobials is a key to realize the control over infections causing morbidity and mortality. An important current issue of contemporary medicine and microbiology is the search for new strategies for adequate therapy of infectious diseases associated with rapidly emerging multidrug-resistant (MDR) pathogens. Recently, a great deal of progress has been made in the field of nanobiotechnology towards the development of various nanoantimicrobials (NAMs) as novel therapeutic solution. Current microbiological studies, employing either synthetic antibiotics or natural antimicrobial, have demonstrated the ability of NAMs to tackle the issue of MDR by reverting the mechanisms of resistance. The present review critically discusses the various factors that can contribute to modulate the effects of NAMs on microbes. It includes essential features of NAMs including but not limited to composition, surface charge, loading capacity, size, hydrophobicity/philicity, controlled release and functionalization. In contrast, how microbial structural differences, biofilm formation, persister cells and intracellular pathogens contribute towards sensitivity or resistance towards antimicrobials is comprehensively analysed. These multilateral factors should be considered earnestly in order to make NAMs a successful alternative of the conventional antibiotics.
Collapse
Affiliation(s)
- Bushra Jamil
- a Department of Biosciences, Faculty of Sciences , COMSATS Institute of Information Technology , Islamabad , Pakistan
| | - Muhammad Imran
- a Department of Biosciences, Faculty of Sciences , COMSATS Institute of Information Technology , Islamabad , Pakistan
| |
Collapse
|
22
|
Bacterium-Derived Cell-Penetrating Peptides Deliver Gentamicin To Kill Intracellular Pathogens. Antimicrob Agents Chemother 2017; 61:AAC.02545-16. [PMID: 28096156 DOI: 10.1128/aac.02545-16] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 01/07/2017] [Indexed: 12/20/2022] Open
Abstract
Commonly used antimicrobials show poor cellular uptake and often have limited access to intracellular targets, resulting in low antimicrobial activity against intracellular pathogens. An efficient delivery system to transport these drugs to the intracellular site of action is needed. Cell-penetrating peptides (CPPs) mediate the internalization of biologically active molecules into the cytoplasm. Here, we characterized two CPPs, α1H and α2H, derived from the Yersinia enterocolitica YopM effector protein. These CPPs, as well as Tat (trans-activator of transcription) from HIV-1, were used to deliver the antibiotic gentamicin to target intracellular bacteria. The YopM-derived CPPs penetrated different endothelial and epithelial cells to the same extent as Tat. CPPs were covalently conjugated to gentamicin, and CPP-gentamicin conjugates were used to target infected cells to kill multiple intracellular Gram-negative pathogenic bacteria, including Escherichia coli K1, Salmonella enterica serovar Typhimurium, and Shigella flexneri Taken together, CPPs show great potential as delivery vehicles for antimicrobial agents and may contribute to the generation of new therapeutic tools to treat infectious diseases caused by intracellular pathogens.
Collapse
|
23
|
Ostos FJ, Lebrón JA, Moyá ML, López-López M, Sánchez A, Clavero A, García-Calderón CB, Rosado IV, López-Cornejo P. P-Sulfocalix[6]arene as Nanocarrier for Controlled Delivery of Doxorubicin. Chem Asian J 2017; 12:679-689. [PMID: 28112869 DOI: 10.1002/asia.201601713] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 01/22/2017] [Indexed: 01/02/2023]
Abstract
Given the high toxicity of the anthracycline antibiotic doxorubicin (DOX), it is relevant to search for nanocarriers that decrease the side effects of the drug and are able to transport it towards a therapeutic target Here, the encapsulation of DOX by p-sulfocalix[6]arene (calix) has been studied. The interaction of DOX with the macrocycle, as well as with DNA, has been investigated and the equilibrium constant for each binding process estimated. The results showed that the binding constant of DOX to DNA, KDNA , is three orders of magnitude higher than that to calix, Kcalix . The ability of calixarenes to encapsulate DOX molecules, as well as the capability of the DOX molecules included into the inner cavity of the macrocycle to bind with DNA have been examined. Cytotoxicity measurements were done in different cancer and normal cell lines to probe the decrease in the toxicity of the encapsulated DOX. The low toxicity of calixarenes has also been demonstrated for different cell lines.
Collapse
Affiliation(s)
- Francisco J Ostos
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, c/ Prof. García González n° 1, Seville, 41012, Spain
| | - José A Lebrón
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, c/ Prof. García González n° 1, Seville, 41012, Spain
| | - Maria L Moyá
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, c/ Prof. García González n° 1, Seville, 41012, Spain
| | - Manuel López-López
- Departamento de Ingeniería Química, Química FísicayCiencias de los Materiales, Facultad de Ciencias Experimentales, Universidad de Huelva, Campus 'El Carmen", E-21071, Huelva, Spain
| | - Antonio Sánchez
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, c/ Prof. García González n° 1, Seville, 41012, Spain
| | - Amparo Clavero
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, c/ Prof. García González n° 1, Seville, 41012, Spain
| | - Clara B García-Calderón
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Av. Manuel Siurot, s/n, 41013, Seville, Spain
| | - Iván V Rosado
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Av. Manuel Siurot, s/n, 41013, Seville, Spain
| | - Pilar López-Cornejo
- Departamento de Química Física, Facultad de Química, Universidad de Sevilla, c/ Prof. García González n° 1, Seville, 41012, Spain
| |
Collapse
|
24
|
Castangia I, Marongiu F, Manca ML, Pompei R, Angius F, Ardu A, Fadda AM, Manconi M, Ennas G. Combination of grape extract-silver nanoparticles and liposomes: A totally green approach. Eur J Pharm Sci 2016; 97:62-69. [PMID: 27825918 DOI: 10.1016/j.ejps.2016.11.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/28/2016] [Accepted: 11/02/2016] [Indexed: 01/07/2023]
Abstract
In the present work, silver nanoparticles were prepared using a totally green procedure combining silver nitrate and an extract of grape pomace as a green source. Additionally, nanoparticles were stabilized using phospholipid and water and/or a mixture of water and propylene glycol (PG). To the best of our knowledge, grape-silver nanoparticle stabilized liposomes or PG-liposomes were formulated, for the first time, combining the residual products of wine-made industry, silver nitrate and phospholipids, avoiding the addition of hazardous substances to human health and the environment, in an easy, scalable and reproducible method. The structure and morphology of grape-silver nanoparticle stabilized vesicles were evaluated by transmission electron microscopy (TEM), UV-vis spectroscopy and photon correlation spectroscopy. Samples were designed as possible carrier for skin protection because of their double function: the grape extract acts as antioxidant and the colloidal silver as antimicrobial agent, which might be helpful in eliminating dangerous free radicals and many pathogenic microorganisms. Obtained nanoparticles were small in size and their combination with phospholipids did not hamper the vesicle formation, which were multilamellar and sized ~100nm. TEM images shows a heterogeneous distribution of nanoparticles, which were located both in the intervesicular medium and in the vesicular structure. Further, grape-silver nanoparticles, when stabilized by liposomes, were able to inhibit the proliferation of both Staphylococcus aureus and Pseudomonas aeruginosa and provided a great protection of keratinocytes and fibroblasts against oxidative stress avoiding their damage and death.
Collapse
Affiliation(s)
- Ines Castangia
- Dipartimento Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
| | - Francesca Marongiu
- Dipartimento Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
| | - Maria Letizia Manca
- Dipartimento Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
| | - Raffaello Pompei
- Dipartimento Scienze Biomediche, Università di Cagliari, Cagliari, Italy
| | - Fabrizio Angius
- Dipartimento Scienze Biomediche, Università di Cagliari, Cagliari, Italy
| | - Andrea Ardu
- Dipartimento Scienze Chimiche e Geologiche, Università di Cagliari e Unità di Ricerca INSTM di Cagliari - Cittadella Universitaria di Monserrato, 09042, Monserrato, (CA), Italy; Consorzio AUSI, Palazzo Bellavista Monteponi, Iglesias, Carbonia-Iglesias, Italy
| | - Anna Maria Fadda
- Dipartimento Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy
| | - Maria Manconi
- Dipartimento Scienze della Vita e dell'Ambiente, Università di Cagliari, Cagliari, Italy.
| | - Guido Ennas
- Dipartimento Scienze Chimiche e Geologiche, Università di Cagliari e Unità di Ricerca INSTM di Cagliari - Cittadella Universitaria di Monserrato, 09042, Monserrato, (CA), Italy
| |
Collapse
|
25
|
Vesely R, Jelinkova P, Hegerova D, Cernei N, Kopel P, Moulick A, Richtera L, Heger Z, Adam V, Zitka O. Nanoparticles Suitable for BCAA Isolation Can Serve for Use in Magnetic Lipoplex-Based Delivery System for L, I, V, or R-rich Antimicrobial Peptides. MATERIALS 2016; 9:ma9040260. [PMID: 28773383 PMCID: PMC5502924 DOI: 10.3390/ma9040260] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/14/2016] [Accepted: 03/24/2016] [Indexed: 11/16/2022]
Abstract
This paper investigates the synthesis of paramagnetic nanoparticles, which are able to bind branched chain amino acids (BCAAs)—leucine, valine, and isoleucine and, thus, serve as a tool for their isolation. Further, by this, we present an approach for encapsulation of nanoparticles into a liposome cavity resulting in a delivery system. Analyses of valine and leucine in entire complex show that 31.3% and 32.6% recoveries are reached for those amino acids. Evaluation of results shows that the success rate of delivery in Escherichia coli (E. coli) is higher in the case of BCAAs on nanoparticles entrapped in liposomes (28.7% and 34.7% for valine and leucine, respectively) when compared to nanoparticles with no liposomal envelope (18.3% and 13.7% for valine and leucine, respectively). The nanoparticles with no liposomal envelope exhibit the negative zeta potential (−9.1 ± 0.3 mV); however, their encapsulation results in a shift into positive values (range of 28.9 ± 0.4 to 33.1 ± 0.5 mV). Thus, electrostatic interactions with negatively-charged cell membranes (approx. −50 mV in the case of E. coli) leads to a better uptake of cargo. Our delivery system was finally tested with the leucine-rich antimicrobial peptide (FALALKALKKALKKLKKALKKAL) and it is shown that hemocompatibility (7.5%) and antimicrobial activity of the entire complex against E. coli, Staphylococcus aureus (S. aureus), and methicilin-resistant S. aureus (MRSA) is comparable or better than conventional penicillin antibiotics.
Collapse
Affiliation(s)
- Radek Vesely
- Department of Traumatology at the Medical Faculty, Masaryk University and Trauma Hospital of Brno, Ponavka 6, Brno CZ-662 50, Czech Republic.
| | - Pavlina Jelinkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Dagmar Hegerova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Natalia Cernei
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Pavel Kopel
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Amitava Moulick
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| | - Ondrej Zitka
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic.
- Central European Institute of Technology, Brno, University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic.
| |
Collapse
|
26
|
Shimanovich U, Gedanken A. Nanotechnology solutions to restore antibiotic activity. J Mater Chem B 2016; 4:824-833. [PMID: 32263154 DOI: 10.1039/c5tb01527h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This review focuses on the development of nanoparticle systems that enables to enhance and restore the antibiotic activity for drug-resistant organisms. New and more aggressive antibiotic resistant bacteria and parasites calls for the development of new therapeutic strategies to overcome the inefficiency of conventional antibiotics and bypass treatment limitations related to these pathologies. Nanostructured biomaterials, nanoparticles in particular, have unique physicochemical properties such as ultra-small and controllable size, large surface area to mass ratio, high reactivity, and functionalizable structure. These properties can be applied to facilitate the administration of antimicrobial drugs, thereby overcoming some of the limitations in traditional antimicrobial therapeutics. Here the current progress and challenges in synthesizing nanoparticle platforms for restoring activity of various antimicrobial drugs are reviewed with an emphasis on antibiotics. We also call attention to the need to unite the shared interest between nanoengineers and microbiologists in developing nanotechnology for the treatment of microbial diseases.
Collapse
Affiliation(s)
- U Shimanovich
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | | |
Collapse
|
27
|
Menina S, Labouta HI, Geyer R, Krause T, Gordon S, Dersch P, Lehr CM. Invasin-functionalized liposome nanocarriers improve the intracellular delivery of anti-infective drugs. RSC Adv 2016. [DOI: 10.1039/c6ra02988d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Liposomes containing gentamicin and surface-functionalized with InvA497 showed a reduced infection load of both cytosolic and vacuolar intracellular bacteria.
Collapse
Affiliation(s)
- Sara Menina
- Department of Drug Delivery
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)
- Helmholtz Center for Infection Research (HZI)
- Saarbruecken
- Germany
| | - Hagar Ibrahim Labouta
- Department of Drug Delivery
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)
- Helmholtz Center for Infection Research (HZI)
- Saarbruecken
- Germany
| | - Rebecca Geyer
- Department of Molecular Infection Biology
- Helmholtz Center for Infection Research (HZI)
- Braunschweig
- Germany
| | - Tanja Krause
- Department of Molecular Infection Biology
- Helmholtz Center for Infection Research (HZI)
- Braunschweig
- Germany
| | - Sarah Gordon
- Department of Drug Delivery
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)
- Helmholtz Center for Infection Research (HZI)
- Saarbruecken
- Germany
| | - Petra Dersch
- Department of Molecular Infection Biology
- Helmholtz Center for Infection Research (HZI)
- Braunschweig
- Germany
| | - Claus-Michael Lehr
- Department of Drug Delivery
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS)
- Helmholtz Center for Infection Research (HZI)
- Saarbruecken
- Germany
| |
Collapse
|
28
|
Pei Y, Yeo Y. Drug delivery to macrophages: Challenges and opportunities. J Control Release 2015; 240:202-211. [PMID: 26686082 DOI: 10.1016/j.jconrel.2015.12.014] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 12/05/2015] [Accepted: 12/10/2015] [Indexed: 02/07/2023]
Abstract
Macrophages are prevalent in the body and have roles in almost every aspect of human biology. They have often been considered a subject to avoid during drug delivery. However, with recent understanding of their diverse functions in diseases, macrophages have gained increasing interest as important therapeutic targets. To develop drug carriers to macrophages, it is important to understand their biological roles and requirements for efficient targeting. This review provides an overview of representative carriers and various approaches to address challenges in drug delivery to macrophages such as biodistribution, cellular uptake, intracellular trafficking, and drug release.
Collapse
Affiliation(s)
- Yihua Pei
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, United States
| | - Yoon Yeo
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, United States; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, United States.
| |
Collapse
|
29
|
Ladavière C, Gref R. Toward an optimized treatment of intracellular bacterial infections: input of nanoparticulate drug delivery systems. Nanomedicine (Lond) 2015; 10:3033-3055. [PMID: 26420270 DOI: 10.2217/nnm.15.128] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Intracellular pathogenic bacteria can lead to some of the most life-threatening infections. By evolving a number of ingenious mechanisms, these bacteria have the ability to invade, colonize and survive in the host cells in active or latent forms over prolonged period of time. A variety of nanoparticulate systems have been developed to optimize the delivery of antibiotics. Main advantages of nanoparticulate systems as compared with free drugs are an efficient drug encapsulation, protection from inactivation, targeting infection sites and the possibility to deliver drugs by overcoming cellular barriers. Nevertheless, despite the great progresses in treating intracellular infections using nanoparticulate carriers, some challenges still remain, such as targeting cellular subcompartments with bacteria and delivering synergistic drug combinations. Engineered nanoparticles should allow controlling drug release both inside cells and within the extracellular space before reaching the target cells.
Collapse
Affiliation(s)
- Catherine Ladavière
- UMR CNRS 5223, IMP, Université Lyon 1, INSA de Lyon, 69100 Villeurbanne, France
| | - Ruxandra Gref
- Institute of Molecular Sciences, UMR CNRS 8214, Université Paris-Saclay, 91400 Orsay, France
| |
Collapse
|
30
|
McCormack RM, Lyapichev K, Olsson ML, Podack ER, Munson GP. Enteric pathogens deploy cell cycle inhibiting factors to block the bactericidal activity of Perforin-2. eLife 2015; 4. [PMID: 26418746 PMCID: PMC4626573 DOI: 10.7554/elife.06505] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 09/28/2015] [Indexed: 12/28/2022] Open
Abstract
Perforin-2 (MPEG1) is an effector of the innate immune system that limits the proliferation and spread of medically relevant Gram-negative, -positive, and acid fast bacteria. We show here that a cullin-RING E3 ubiquitin ligase (CRL) complex containing cullin-1 and βTrCP monoubiquitylates Perforin-2 in response to pathogen associated molecular patterns such as LPS. Ubiquitylation triggers a rapid redistribution of Perforin-2 and is essential for its bactericidal activity. Enteric pathogens such as Yersinia pseudotuberculosis and enteropathogenic Escherichia coli disarm host cells by injecting cell cycle inhibiting factors (Cifs) into mammalian cells to deamidate the ubiquitin-like protein NEDD8. Because CRL activity is dependent upon NEDD8, Cif blocks ubiquitin dependent trafficking of Perforin-2 and thus, its bactericidal activity. Collectively, these studies further underscore the biological significance of Perforin-2 and elucidate critical molecular events that culminate in Perforin-2-dependent killing of both intracellular and extracellular, cell-adherent bacteria. DOI:http://dx.doi.org/10.7554/eLife.06505.001 A wide range of bacteria and other microbes can infect animals and cause disease. Throughout evolution, these microbes and their hosts have been fighting never ending arms races in which the microbes deploy ever more elaborate weapons, while the hosts adapt to defend themselves. An animal's first line of defense is provided by its ‘innate’ immune system. This system is activated by the general features of microbial cells; for example, the molecules that make up the walls surrounding most bacteria. Microbes must defeat the innate immune system in order to cause disease, and ultimately to spread from one host to the next. One component of innate immunity is a protein called Perforin-2 that is present in most, if not all, animal cells. This protein forms pores on bacterial cells, causing them to split open and die. However, it was not clear how Perforin-2 is switched on and what, if anything, bacteria do to counteract it. To address these questions, McCormack et al. infected human and mice cells with bacteria that cause serious diseases of the digestive tract. The experiments show that when animal cells detect bacteria, or merely a fragment of their cell wall, a specific group of proteins, called the CRL complex, attaches a molecule called ubiquitin to Perforin-2. Ubiquitin works much like the shipping label of a package, enabling the efficient targeting of Perforin-2 to the invading bacteria. McCormack et al. also show that some bacteria use a protein called a cell cycle inhibiting factor (or Cif for short) to inhibit the CRL complex. This blocks the ubiquitin labeling of Perforin-2, which renders it a useless weapon that can no longer be directed towards bacteria. Mice that are infected with a bacterium called Yersinia pseudotuberculosis become seriously unwell and often die. However, McCormack et al. found that mice infected with mutant Y. pseudotuberculosis that lacked Cif remained healthy. Also, mice that lacked Perforin-2 are highly susceptible to infectious diseases. McCormack et al.'s findings reveal how Perforin-2 is activated during the innate immune response and how some bacteria can defeat this pivotal defense. In the current age of antibiotic resistant bacteria, these studies may spur the development of new drugs that restore or increase the activity of Perforin-2. DOI:http://dx.doi.org/10.7554/eLife.06505.002
Collapse
Affiliation(s)
- Ryan M McCormack
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Kirill Lyapichev
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Melissa L Olsson
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Eckhard R Podack
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - George P Munson
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| |
Collapse
|
31
|
McCormack RM, de Armas LR, Shiratsuchi M, Fiorentino DG, Olsson ML, Lichtenheld MG, Morales A, Lyapichev K, Gonzalez LE, Strbo N, Sukumar N, Stojadinovic O, Plano GV, Munson GP, Tomic-Canic M, Kirsner RS, Russell DG, Podack ER. Perforin-2 is essential for intracellular defense of parenchymal cells and phagocytes against pathogenic bacteria. eLife 2015; 4. [PMID: 26402460 PMCID: PMC4626811 DOI: 10.7554/elife.06508] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 09/23/2015] [Indexed: 01/09/2023] Open
Abstract
Perforin-2 (MPEG1) is a pore-forming, antibacterial protein with broad-spectrum activity. Perforin-2 is expressed constitutively in phagocytes and inducibly in parenchymal, tissue-forming cells. In vitro, Perforin-2 prevents the intracellular replication and proliferation of bacterial pathogens in these cells. Perforin-2 knockout mice are unable to control the systemic dissemination of methicillin-resistant Staphylococcus aureus (MRSA) or Salmonella typhimurium and perish shortly after epicutaneous or orogastric infection respectively. In contrast, Perforin-2-sufficient littermates clear the infection. Perforin-2 is a transmembrane protein of cytosolic vesicles -derived from multiple organelles- that translocate to and fuse with bacterium containing vesicles. Subsequently, Perforin-2 polymerizes and forms large clusters of 100 Å pores in the bacterial surface with Perforin-2 cleavage products present in bacteria. Perforin-2 is also required for the bactericidal activity of reactive oxygen and nitrogen species and hydrolytic enzymes. Perforin-2 constitutes a novel and apparently essential bactericidal effector molecule of the innate immune system.
Collapse
Affiliation(s)
- Ryan M McCormack
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Lesley R de Armas
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Motoaki Shiratsuchi
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Desiree G Fiorentino
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Melissa L Olsson
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Mathias G Lichtenheld
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Alejo Morales
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Kirill Lyapichev
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Louis E Gonzalez
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Natasa Strbo
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Neelima Sukumar
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, United States
| | - Olivera Stojadinovic
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, United States
| | - Gregory V Plano
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - George P Munson
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| | - Marjana Tomic-Canic
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, United States
| | - Robert S Kirsner
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, United States
| | - David G Russell
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, United States
| | - Eckhard R Podack
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, United States
| |
Collapse
|
32
|
Monteiro N, Martins M, Martins A, Fonseca NA, Moreira JN, Reis RL, Neves NM. Antibacterial activity of chitosan nanofiber meshes with liposomes immobilized releasing gentamicin. Acta Biomater 2015; 18:196-205. [PMID: 25749293 DOI: 10.1016/j.actbio.2015.02.018] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 01/27/2015] [Accepted: 02/18/2015] [Indexed: 01/19/2023]
Abstract
Chitsan (Ch) nanofiber mesh (NFM) is a material with natural characteristics favoring its use in human wound dressing. The present work proposes a gentamicin-loaded liposome immobilized at the surface of Ch NFMs to promote its antibacterial activity. To achieve this purpose, Ch NFMs were functionalized with thiol groups, and gentamicin-loaded liposomes were covalently immobilized by the reaction of the SH groups with maleimide. The maximum concentration of SH groups (55.52±11.19nmolcm(-2)) was obtained at pH 7. A fluorescent dye was covalently bound to the SH groups present at the surface of electrospun Ch NFMs. Their spatial distribution was uniform throughout the NFMs when analyzed by fluorescence microscopy. Gentamicin was successfully encapsulated into the liposomes with an efficiency of 17%. Gentamicin-loaded liposomes were uniformly distributed at the surface of the Ch NFMs and the drug release kinetic showed a sustained release of gentamicin during 16h, achieving a steady state at 24h. The in vitro susceptibility tests confirmed that the gentamicin released from the liposomes immobilized at the surface of electrospun Ch NFM has bactericidal activity against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. The results show that the developed system has promising performance for wound dressing applications, avoiding infections caused by these common pathogens.
Collapse
Affiliation(s)
- Nelson Monteiro
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909 Caldas das Taipas, Guimarães, Portugal; ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| | - Margarida Martins
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909 Caldas das Taipas, Guimarães, Portugal; ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal; IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, Portugal.
| | - Albino Martins
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909 Caldas das Taipas, Guimarães, Portugal; ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| | - Nuno A Fonseca
- CNC - Center for Neurosciences and Cell Biology, FFUC - Faculty of Pharmacy and University of Coimbra, 3000 Coimbra, Portugal.
| | - João N Moreira
- CNC - Center for Neurosciences and Cell Biology, FFUC - Faculty of Pharmacy and University of Coimbra, 3000 Coimbra, Portugal.
| | - Rui L Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909 Caldas das Taipas, Guimarães, Portugal; ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| | - Nuno M Neves
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra S. Cláudio do Barco, 4806-909 Caldas das Taipas, Guimarães, Portugal; ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| |
Collapse
|
33
|
Burton AJ, Giguère S, Berghaus LJ, Hondalus MK, Arnold RD. Efficacy of liposomal gentamicin against Rhodococcus equi in a mouse infection model and colocalization with R. equi in equine alveolar macrophages. Vet Microbiol 2015; 176:292-300. [PMID: 25666452 DOI: 10.1016/j.vetmic.2015.01.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 01/16/2015] [Accepted: 01/19/2015] [Indexed: 11/24/2022]
Abstract
Rhodococcus equi, a facultative intracellular pathogen and an important cause of pneumonia in foals, is highly susceptible to killing by gentamicin in vitro. However, gentamicin is not effective in vivo, due to its poor cellular penetration. Encapsulation of drugs in liposomes enhances cellular uptake. The objectives of this study were to compare liposomal gentamicin and free gentamicin with respect to their uptake by equine macrophages and intracellular colocalization with R. equi and to compare the efficacies of liposomal gentamicin, free gentamicin and clarithromycin with rifampin for the reduction of R. equi CFU in a mouse model of infection. After ex vivo exposure, a significantly higher mean (±SD) percentage of equine alveolar macrophages contained liposomal gentamicin (91.9±7.6%) as opposed to free gentamicin (16.8±12.5%). Intracellular colocalization of drug and R. equi, as assessed by confocal microscopy, occurred in a significantly higher proportion of cells exposed to liposomal gentamicin (81.2±17.8%) compared to those exposed to free gentamicin (10.4±8.7%). The number of R. equi CFU in the spleen was significantly lower in mice treated with liposomal gentamicin compared to that of mice treated with free gentamicin or to untreated control mice. Treatment with liposomal gentamicin also resulted in a significantly greater reduction in the number of R. equi CFU in the liver compared to treatment with clarithromycin in combination with rifampin. These results support further investigation of liposomal gentamicin as a new treatment for infections caused by R. equi.
Collapse
Affiliation(s)
- Alexandra J Burton
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Steeve Giguère
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, United States.
| | - Londa J Berghaus
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Mary K Hondalus
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States
| | - Robert D Arnold
- Department of Drug Discovery & Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, United States
| |
Collapse
|
34
|
Darvishi B, Manoochehri S, Kamalinia G, Samadi N, Amini M, Mostafavi SH, Maghazei S, Atyabi F, Dinarvand R. Preparation and Antibacterial Activity Evaluation of 18-β-glycyrrhetinic Acid Loaded PLGA Nanoparticles. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2015; 14:373-83. [PMID: 25901144 PMCID: PMC4403053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The aim of the present study was to formulate poly (lactide-co-glycolide) (PLGA) nanoparticles loaded with 18-β-glycyrrhetinic acid (GLA) with appropriate physicochemical properties and antimicrobial activity. GLA loaded PLGA nanoparticles were prepared with different drug to polymer ratios, acetone contents and sonication times and the antibacterial activity of the developed nanoparticles was examined against different gram-negative and gram-positive bacteria. The antibacterial effect was studied using serial dilution technique to determine the minimum inhibitory concentration of nanoparticles. Results demonstrated that physicochemical properties of nanoparticles were affected by the above mentioned parameters where nanoscale size particles ranging from 175 to 212 nm were achieved. The highest encapsulation efficiency (53.2 ± 2.4%) was obtained when the ratio of drug to polymer was 1:4. Zeta potential of the developed nanoparticles was fairly negative (-11±1.5). In-vitro release profile of nanoparticles showed two phases: an initial phase of burst release for 10 h followed by a slow release pattern up to the end. The antimicrobial results revealed that the nanoparticles were more effective than pure GLA against P. aeuroginosa, S. aureus and S. epidermidis. This improvement in antibacterial activity of GLA loaded nanoparticles when compared to pure GLA may be related to higher nanoparticles penetration into infected cells and a higher amount of GLA delivery in its site of action. Herein, it was shown that GLA loaded PLGA nanoparticles displayed appropriate physicochemical properties as well as an improved antimicrobial effect.
Collapse
Affiliation(s)
- Behrad Darvishi
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Saeed Manoochehri
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Golnaz Kamalinia
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Nasrin Samadi
- Drug and Food Control Department, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mohsen Amini
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Seyyed Hossein Mostafavi
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Shahab Maghazei
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Fatemeh Atyabi
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Rassoul Dinarvand
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,
| |
Collapse
|
35
|
Gao W, Thamphiwatana S, Angsantikul P, Zhang L. Nanoparticle approaches against bacterial infections. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 6:532-47. [PMID: 25044325 PMCID: PMC4197093 DOI: 10.1002/wnan.1282] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/05/2014] [Accepted: 06/18/2014] [Indexed: 12/12/2022]
Abstract
Despite the wide success of antibiotics, the treatment of bacterial infections still faces significant challenges, particularly the emergence of antibiotic resistance. As a result, nanoparticle drug delivery platforms including liposomes, polymeric nanoparticles, dendrimers, and various inorganic nanoparticles have been increasingly exploited to enhance the therapeutic effectiveness of existing antibiotics. This review focuses on areas where nanoparticle approaches hold significant potential to advance the treatment of bacterial infections. These areas include targeted antibiotic delivery, environmentally responsive antibiotic delivery, combinatorial antibiotic delivery, nanoparticle-enabled antibacterial vaccination, and nanoparticle-based bacterial detection. In each area we highlight the innovative antimicrobial nanoparticle platforms and review their progress made against bacterial infections.
Collapse
Affiliation(s)
- Weiwei Gao
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Soracha Thamphiwatana
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Pavimol Angsantikul
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Liangfang Zhang
- Department of NanoEngineering and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| |
Collapse
|
36
|
Sensitization of intracellular Salmonella enterica serovar Typhimurium to aminoglycosides in vitro and in vivo by a host-targeted antimicrobial agent. Antimicrob Agents Chemother 2014; 58:7375-82. [PMID: 25267669 DOI: 10.1128/aac.03778-14] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Aminoglycosides exhibit relatively poor activity against intracellular Salmonella enterica serovar Typhimurium due to their low permeativity across eukaryotic cell membranes. Previously, we identified the unique ability of AR-12, a celecoxib-derived small-molecule agent, to eradicate intracellular Salmonella Typhimurium in macrophages by facilitating autophagosome formation and suppressing Akt kinase signaling. In light of this unique mode of antibacterial action, we investigated the ability of AR-12 to sensitize intracellular Salmonella to aminoglycosides in macrophages and in an animal model. The antibacterial activities of AR-12 combined with various aminoglycosides, including streptomycin, kanamycin, gentamicin, and amikacin, against intracellular S. Typhimurium in murine RAW264.7 macrophages were assessed. Cells were infected with S. Typhimurium followed by treatment with AR-12 or individual aminoglycosides or with combinations for 24 h. The in vivo efficacies of AR-12, alone or in combination with gentamicin or amikacin, were also assessed by treating S. Typhimurium-infected BALB/c mice daily for 14 consecutive days. Exposure of S. Typhimurium-infected RAW264.7 cells to a combination of AR-12 with individual aminoglycosides led to a reduction in bacterial survival (P < 0.05), both intracellular and extracellular, that was greater than that seen with the aminoglycosides alone. This sensitizing effect, however, was not associated with increased aminoglycoside penetration into bacteria or macrophages. Moreover, daily intraperitoneal injection of AR-12 at 0.1 mg/kg of body weight significantly increased the in vivo efficacy of gentamicin and amikacin in prolonging the survival of S. Typhimurium-infected mice. These findings indicate that the unique ability of AR-12 to enhance the in vivo efficacy of aminoglycosides might have translational potential for efforts to develop novel strategies for the treatment of salmonellosis.
Collapse
|
37
|
Burton AJ, Giguère S, Arnold RD. Pharmacokinetics, pulmonary disposition and tolerability of liposomal gentamicin and free gentamicin in foals. Equine Vet J 2014; 47:467-72. [DOI: 10.1111/evj.12309] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 06/12/2014] [Indexed: 01/26/2023]
Affiliation(s)
- A. J. Burton
- Department of Large Animal Medicine; College of Veterinary Medicine; University of Georgia; Athens USA
| | - S. Giguère
- Department of Large Animal Medicine; College of Veterinary Medicine; University of Georgia; Athens USA
| | - R. D. Arnold
- Department of Drug Discovery and Development; Harrison School of Pharmacy; Auburn University; Alabama USA
| |
Collapse
|
38
|
Cationic vesicles based on biocompatible diacyl glycerol-arginine surfactants: Physicochemical properties, antimicrobial activity, encapsulation efficiency and drug release. Colloids Surf B Biointerfaces 2014; 120:160-7. [DOI: 10.1016/j.colsurfb.2014.04.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 04/14/2014] [Accepted: 04/15/2014] [Indexed: 11/20/2022]
|
39
|
Biodegradable nanoparticles for intracellular delivery of antimicrobial agents. J Control Release 2014; 187:101-17. [PMID: 24878179 DOI: 10.1016/j.jconrel.2014.05.034] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 05/14/2014] [Accepted: 05/17/2014] [Indexed: 12/18/2022]
Abstract
Biodegradable nanoparticles have emerged as a promising strategy for ferrying antimicrobial agents into specific cells due to their unique properties. This review discusses the current progress and challenges of biodegradable nanoparticles for intracellular antimicrobial delivery to understand design principles for the development of ideal nanocarriers. The intracellular delivery performances of biodegradable nanoparticles for diverse antimicrobial agents are first summarized. Second, the cellular internalization and intracellular trafficking, degradation and release kinetics of nanoparticles as well as their relation with intracellular delivery of encapsulated antimicrobial agents are provided. Third, the influences of nanoparticle properties on the cellular internalization and intracellular fate of nanoparticles and their payload antimicrobial agents are discussed. Finally, the challenges and perspectives of nanoparticles for intracellular delivery of antimicrobial agents are addressed. The review will be helpful to the scientists who are interested in searching for more efficient nanosystem strategies for intracellular delivery of antimicrobial agents.
Collapse
|
40
|
Abed N, Couvreur P. Nanocarriers for antibiotics: a promising solution to treat intracellular bacterial infections. Int J Antimicrob Agents 2014; 43:485-96. [PMID: 24721232 DOI: 10.1016/j.ijantimicag.2014.02.009] [Citation(s) in RCA: 204] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 02/07/2014] [Indexed: 10/25/2022]
Abstract
In the field of antibiotherapy, intracellular infections remain difficult to eradicate mainly due to the poor intracellular penetration of most of the commonly used antibiotics. Bacteria have quickly understood that their intracellular localisation allows them to be protected from the host immune system, but also from the action of antimicrobial agents. In addition, in most cases pathogens nestle in professional phagocytic cells, and can even use them as a 'Trojan horse' to induce a secondary site of infection thereby causing persistent or recurrent infections. Thus, new strategies had to be considered in order to counteract these problems. Amongst them, nanocarriers loaded with antibiotics represent a promising approach. Nowadays, it is possible to encapsulate, incorporate or even conjugate biologically active molecules into different families of nanocarriers such as liposomes or nanoparticles in order to deliver antibiotics intracellularly and hence to treat infections. This review gives an overview of the variety of nanocarriers developed to deliver antibiotics directly into infected cells.
Collapse
Affiliation(s)
- Nadia Abed
- Faculté de Pharmacie, Institut Galien UMR CNRS 8612, Université Paris-Sud XI, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France
| | - Patrick Couvreur
- Faculté de Pharmacie, Institut Galien UMR CNRS 8612, Université Paris-Sud XI, 5 rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France.
| |
Collapse
|
41
|
Paliwal SR, Paliwal R, Vyas SP. A review of mechanistic insight and application of pH-sensitive liposomes in drug delivery. Drug Deliv 2014; 22:231-42. [PMID: 24524308 DOI: 10.3109/10717544.2014.882469] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The pH-sensitive liposomes have been extensively used as an alternative to conventional liposomes in effective intracellular delivery of therapeutics/antigen/DNA/diagnostics to various compartments of the target cell. Such liposomes are destabilized under acidic conditions of the endocytotic pathway as they usually contain pH-sensitive lipid components. Therefore, the encapsulated content is delivered into the intracellular bio-environment through destabilization or its fusion with the endosomal membrane. The therapeutic efficacy of pH-sensitive liposomes enables them as biomaterial with commercial utility especially in cancer treatment. In addition, targeting ligands including antibodies can be anchored on the surface of pH-sensitive liposomes to target specific cell surface receptors/antigen present on tumor cells. These vesicles have also been widely explored for antigen delivery and serve as immunological adjuvant to enhance the immune response to antigens. The present review deals with recent research updates on application of pH-sensitive liposomes in chemotherapy/diagnostics/antigen/gene delivery etc.
Collapse
Affiliation(s)
- Shivani Rai Paliwal
- Department of Pharmaceutics, SLT Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya Bilaspur , Chhattisgarh , India
| | | | | |
Collapse
|
42
|
Corrêa GG, Morais EC, Brambilla R, Bernardes AA, Radtke C, Dezen D, Júnior AV, Fronza N, Santos JHZD. Effects of the sol-gel route on the structural characteristics and antibacterial activity of silica-encapsulated gentamicin. Colloids Surf B Biointerfaces 2014; 116:510-7. [PMID: 24572495 DOI: 10.1016/j.colsurfb.2014.01.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 12/23/2013] [Accepted: 01/21/2014] [Indexed: 10/25/2022]
Abstract
The effects of sol-gel processes, i.e., acid-catalyzed gelation, base-catalyzed gelation and base-catalyzed precipitation routes, on the encapsulation of gentamicin were investigated. The resulting xerogels were characterized using a series of complementary instrumental techniques, i.e., the adsorption/desorption of nitrogen, small-angle X-ray scattering, Fourier transform infrared spectroscopy, diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy and scanning electron microscopy. The encapsulated gentamicin samples were tested against a series of Gram-positive and Gram-negative bacterial strains. The best antimicrobial activity was observed with the encapsulated gentamicin that was prepared via the precipitation route, even in comparison with the neat antibiotic, especially in the case of the Gram-positive strain Staphylococcus aureus. The gentamicin concentration on the outermost surface and the zeta potential were identified as factors that affected the highest efficiency, as observed in the case of encapsulation via the base-catalyzed process.
Collapse
Affiliation(s)
- G G Corrêa
- Universidade Federal do Rio Grande do Sul, Instituto de Química, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, RS, Brazil
| | - E C Morais
- Universidade Federal do Rio Grande do Sul, Instituto de Química, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, RS, Brazil
| | - R Brambilla
- Universidade Federal do Rio Grande do Sul, Instituto de Química, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, RS, Brazil
| | - A A Bernardes
- Universidade Federal do Rio Grande do Sul, Instituto de Química, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, RS, Brazil
| | - C Radtke
- Universidade Federal do Rio Grande do Sul, Instituto de Química, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, RS, Brazil
| | - D Dezen
- Instituto Federal de Educação, Ciência e Tecnologia Catarinense, Campus Concórdia, SC, Brazil
| | - A V Júnior
- Instituto Federal de Educação, Ciência e Tecnologia Catarinense, Campus Concórdia, SC, Brazil
| | - N Fronza
- Instituto Federal de Educação, Ciência e Tecnologia Catarinense, Campus Concórdia, SC, Brazil
| | - J H Z Dos Santos
- Universidade Federal do Rio Grande do Sul, Instituto de Química, Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, RS, Brazil.
| |
Collapse
|
43
|
Grossi P, Dalla Gasperina D. Treatment ofPseudomonas aeruginosainfection in critically ill patients. Expert Rev Anti Infect Ther 2014; 4:639-62. [PMID: 17009943 DOI: 10.1586/14787210.4.4.639] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Critically ill patients are on the increase in the present clinical setting. Aging of our population and increasingly aggressive medical and therapeutic interventions, including implanted foreign bodies, organ transplantation and advances in the chemotherapy of malignant diseases, have created a cohort of particularly vulnerable patients. Pseudomonas aeruginosa is one of the leading gram-negative organisms associated with nosocomial infections. This organism is frequently feared because it causes severe hospital-acquired infections, especially in immunocompromised hosts, and is often antibiotic resistant, complicating the choice of therapy. The epidemiology, microbiology, mechanisms of resistance and currently available and future treatment options for the most relevant infections caused by P. aeruginosa are reviewed.
Collapse
Affiliation(s)
- Paolo Grossi
- University of Insubria, Infectious Diseases Department, viale Borri 57, 21100 Varese, Italy.
| | | |
Collapse
|
44
|
Liu X, Huang G. Formation strategies, mechanism of intracellular delivery and potential clinical applications of pH-sensitive liposomes. Asian J Pharm Sci 2013. [DOI: 10.1016/j.ajps.2013.11.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
|
45
|
Abstract
In recent years, liposomes have been employed with growing success as pharmaceutical carriers for antineoplastic drugs. One specific strategy used to enhance in vivo liposome-mediated drug delivery is the improvement of intracytoplasmic delivery. In this context, pH-sensitive liposomes (pHSLip) have been designed to explore the endosomal acidification process, which may lead to a destabilization of the liposomes, followed by a release of their contents into the cell cytoplasm. This review considers the current status of pHSLip development and its applicability in cancer treatment, focusing on the mechanisms of pH sensitivity and liposomal composition of pHSLip. The final section will discuss the application of these formulations in both in vitro and in vivo studies of antitumor efficacy.
Collapse
|
46
|
Lei EK, Pereira MP, Kelley SO. Tuning the intracellular bacterial targeting of peptidic vectors. Angew Chem Int Ed Engl 2013; 52:9660-3. [PMID: 23893882 DOI: 10.1002/anie.201302265] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 06/20/2013] [Indexed: 01/07/2023]
Affiliation(s)
- Eric K Lei
- Department of Biochemistry, University of Toronto, Toronto, ON, Canada
| | | | | |
Collapse
|
47
|
Lei EK, Pereira MP, Kelley SO. Tuning the Intracellular Bacterial Targeting of Peptidic Vectors. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302265] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
48
|
Rai Paliwal S, Paliwal R, Vyas SP. pH-sensitive Liposomes in Drug Delivery. SMART MATERIALS FOR DRUG DELIVERY 2013. [DOI: 10.1039/9781849736800-00080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The pH-sensitive liposomes have been extensively studied in recent years as an advantageous alternative to conventional liposomes in effective targeting and accumulation of anticancer drugs in tumors. pH-sensitive liposomes usually contain phosphatidylethanolamine and stabilizing amphiphiles and can destabilize under acidic conditions of the endocytotic pathway. The drug loaded is thought to be delivered into the cytoplasm, probably through destabilization of or fusion with the endosome membrane. This fusogenic property makes the pH-sensitive liposomes more efficient in delivering anticancer drugs than conventional liposomes. The intra-cellular release of drug/gene/diagnostic agents can be achieved without altering their therapeutic efficacy by means of the endosomal escape phenomenon. Cell surface targeting ligands, including antibodies, can be appended on the surface of pH-sensitive liposomes to target specific receptors on tumor cells. This chapter provides an introduction to pH-sensitive liposomes and examples of their therapeutic interest as smart drug-delivery systems.
Collapse
Affiliation(s)
- Shivani Rai Paliwal
- Drug Delivery Research Laboratory Department of Pharmaceutical Sciences, Dr H. S. Gour Vishwavidyalaya (A Central University), Sagar M.P. India, 470003
- Department of Pharmaceutics SLT Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, C.G. India, 495009
| | - Rishi Paliwal
- Drug Delivery Research Laboratory Department of Pharmaceutical Sciences, Dr H. S. Gour Vishwavidyalaya (A Central University), Sagar M.P. India, 470003
| | - Suresh P Vyas
- Drug Delivery Research Laboratory Department of Pharmaceutical Sciences, Dr H. S. Gour Vishwavidyalaya (A Central University), Sagar M.P. India, 470003
| |
Collapse
|
49
|
Abstract
This article focuses on drug targeting to specific cellular organelles for therapeutic purposes. Drugs can be delivered to all major organelles of the cell (cytosol, endosome/lysosome, nucleus, nucleolus, mitochondria, endoplasmic reticulum, Golgi apparatus, peroxisomes and proteasomes) where they exert specific effects in those particular subcellular compartments. Delivery can be achieved by chemical (e.g., polymeric) or biological (e.g., signal sequences) means. Unidirectional targeting to individual organelles has proven to be immensely successful for drug therapy. Newer technologies that accommodate multiple signals (e.g., protein switch and virus-like delivery systems) mimic nature and allow for a more sophisticated approach to drug delivery. Harnessing different methods of targeting multiple organelles in a cell will lead to better drug delivery and improvements in disease therapy.
Collapse
|
50
|
Zaki NM, Hafez MM. Enhanced antibacterial effect of ceftriaxone sodium-loaded chitosan nanoparticles against intracellular Salmonella typhimurium. AAPS PharmSciTech 2012; 13:411-21. [PMID: 22359159 PMCID: PMC3364366 DOI: 10.1208/s12249-012-9758-7] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Accepted: 02/01/2012] [Indexed: 12/31/2022] Open
Abstract
The aim of the present study was to utilize chitosan (CS) nanoparticles for the intracellular delivery of the poorly cell-penetrating antibiotic, ceftriaxone sodium (CTX). In vitro characterization of (CTX-CS) nanoparticles was conducted leading to an optimized formula that was assessed for its biocompatibility to blood (hemolysis test) and cells (MTT assay). Progressively, confocal laser scanning microscopy (CLSM), cellular uptake (microfluorimetry), and antibacterial activity of the nanoparticles were investigated in two cell lines: Caco-2 and macrophages J774.2 pre-infected with Salmonella typhimurium. Results showed that the optimized formula had size 210 nm, positive zeta potential (+30 mV) and appreciable entrapment efficiency for CTX (45%) and included a biphasic release pattern. The nanoparticles were biocompatible and were internalized by cells as verified by CLSM whereas microfluorimetry indicated substantial cellular uptake. Moreover, the CTX-chitosan nanoparticles showed a significant reduction in the count of intracellular S. typhimurium in Caco-2 and macrophages J774.2. This reduction was significantly higher than that obtained in case of placebo nanoparticles, CTX, and CTX-chitosan solutions and might be attributed to enhanced endocytic uptake of the nanoaprticles and antibacterial effect of the chitosan polymer. In conclusion, the results provide evidence for the potential use of chitosan nanoparticles to enhance the intracellular delivery and antibacterial effect of CTX in enterocytes and macrophages.
Collapse
Affiliation(s)
- Noha M Zaki
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, Taif University, Taif, Kingdom of Saudi Arabia.
| | | |
Collapse
|