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Cezard A, Fouquenet D, Vasseur V, Jeannot K, Launay F, Si-Tahar M, Hervé V. Poly-L-Lysine to Fight Antibiotic Resistances of Pseudomonas aeruginosa. Int J Mol Sci 2023; 24:ijms24032851. [PMID: 36769174 PMCID: PMC9917869 DOI: 10.3390/ijms24032851] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
Pseudomonas aeruginosa is a major hospital-associated pathogen that can cause severe infections, most notably in patients with cystic fibrosis (CF) or those hospitalized in intensive care units. Given its remarkable ability to resist antibiotics, P. aeruginosa eradication has grown more challenging. Therefore, there is an urgent need to discover and develop new strategies that can counteract P. aeruginosa-resistant strains. Here, we evaluated the efficacy of poly-L-lysine (pLK) in combination with commonly used antibiotics as an alternative treatment option against P. aeruginosa. First, we demonstrated by scanning electron microscopy that pLK alters the integrity of the surface membrane of P. aeruginosa. We also showed using a fluorometry test that this results in an enhanced permeability of the bacteria membrane. Based on these data, we further evaluated the effect of the combinations of pLK with imipenem, ceftazidime, or aztreonam using the broth microdilution method in vitro. We found synergies in terms of bactericidal effects against either sensitive or resistant P. aeruginosa strains, with a reduction in bacterial growth (up to 5-log10 compared to the control). Similarly, these synergistic and bactericidal effects were confirmed ex vivo using a 3D model of human primary bronchial epithelial cells maintained in an air-liquid interface. In conclusion, pLK could be an innovative antipseudomonal molecule, opening its application as an adjuvant antibiotherapy against drug-resistant P. aeruginosa strains.
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Affiliation(s)
- Adeline Cezard
- INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 37000 Tours, France
- Université de Tours, Faculté de Médecine, 37000 Tours, France
| | - Delphine Fouquenet
- INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 37000 Tours, France
- Université de Tours, Faculté de Médecine, 37000 Tours, France
| | - Virginie Vasseur
- INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 37000 Tours, France
- Université de Tours, Faculté de Médecine, 37000 Tours, France
| | - Katy Jeannot
- UMR 6249 Chrono-Environnement, UFR Sciences Médicales et Pharmaceutiques, Université de Bourgogne-Franche Comté, 25030 Besançon, France
- French National Reference Centre for Antibiotic Resistance, 25030 Besançon, France
- Département de Bactériologie, CHU de Besançon, 25030 Besançon, France
| | - Fabien Launay
- INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 37000 Tours, France
- Université de Tours, Faculté de Médecine, 37000 Tours, France
| | - Mustapha Si-Tahar
- INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 37000 Tours, France
- Université de Tours, Faculté de Médecine, 37000 Tours, France
- Correspondence: (M.S.-T.); (V.H.); Tel.: +33-247366045 (M.S.-T.); +33-247366237 (V.H.)
| | - Virginie Hervé
- INSERM, Centre d’Etude des Pathologies Respiratoires (CEPR), UMR 1100, 37000 Tours, France
- Université de Tours, Faculté de Médecine, 37000 Tours, France
- Correspondence: (M.S.-T.); (V.H.); Tel.: +33-247366045 (M.S.-T.); +33-247366237 (V.H.)
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Biocompatible formulation of cationic antimicrobial peptide Polylysine (PL) through nanotechnology principles and its potential role in food preservation — A review. Int J Biol Macromol 2022; 222:1734-1746. [DOI: 10.1016/j.ijbiomac.2022.09.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 09/26/2022] [Accepted: 09/26/2022] [Indexed: 11/05/2022]
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Wang S, Gao CZ, Liu X, Wu FG, Han X. Long-Chain Poly-d-Lysines Interact with the Plasma Membrane and Induce Protective Autophagy and Intense Cell Necrosis. Bioconjug Chem 2022; 33:938-947. [PMID: 35442635 DOI: 10.1021/acs.bioconjchem.2c00153] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polylysines have been frequently used in drug delivery and antimicrobial and cell adhesion studies. Because of steric hindrance, chirality plays a major role in the functional difference between poly-l-lysine (PLL) and poly-d-lysine (PDL), especially when they interact with the plasma membranes of mammalian cells. Therefore, it is speculated that the interaction between chiral polylysines and the plasma membrane may cause different cellular behaviors. Here, we carefully investigated the interaction pattern of PLL and PDL with plasma membranes. We found that PDL could be anchored onto the plasma membrane and interact with the membrane lipids, leading to the rapid morphological change and death of A549 cells (a human lung cancer cell line) and HPAEpiCs (a human pulmonary alveolar epithelial cell line). In contrast, PLL exhibited good cytocompatibility and was not anchored onto the plasma membranes of these cells. Unlike PLL, PDL could trigger protective autophagy to prevent cells in a certain degree, and the PDL-caused cell death occurred via intense necrosis (featured by increased intracellular Ca2+ content and plasma membrane disruption). In addition, it was found that the short-chain PDL with a repeat unit number of 9 (termed DL9) could locate in lysosomes and induce autophagy at high concentrations, but it could not elicit drastic cell death, which proved that the repeat unit number of polylysine could affect its cellular action. This research confirms that the interaction between chiral polylysines and the plasma membrane can induce autophagy and intense necrosis, which provides guidance for the future studies of chiral molecules/drugs.
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Affiliation(s)
- Shujing Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Cheng-Zhe Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Xiaoyang Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Xiaofeng Han
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, National Demonstration Center for Experimental, Biomedical Engineering Education, Southeast University, Nanjing 210096, China
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Miranda A, Seyer D, Palomino-Durand C, Morakchi-Goudjil H, Massonie M, Agniel R, Rammal H, Pauthe E, Gand A. Poly-L-Lysine and Human Plasmatic Fibronectin Films as Proactive Coatings to Improve Implant Biointegration. Front Bioeng Biotechnol 2022; 9:807697. [PMID: 35111738 PMCID: PMC8801876 DOI: 10.3389/fbioe.2021.807697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/26/2021] [Indexed: 11/13/2022] Open
Abstract
The success of stable and long-term implant integration implies the promotion, control, and respect of the cell microenvironment at the site of implantation. The key is to enhance the implant–host tissue cross talk by developing interfacial strategies that guarantee an optimal and stable seal of soft tissue onto the implant, while preventing potential early and late infection. Indeed, implant rejection is often jeopardized by lack of stable tissue surrounding the biomaterial combined with infections which reduce the lifespan and increase the failure rate of implants and morbidity and account for high medical costs. Thin films formed by the layer-by-layer (LbL) assembly of oppositely charged polyelectrolytes are particularly versatile and attractive for applications involving cell–material contact. With the combination of the extracellular matrix protein fibronectin (Fn, purified from human plasma) and poly-L-lysine (PLL, exhibiting specific chain lengths), we proposed proactive and biomimetic coatings able to guarantee enhanced cell attachment and exhibiting antimicrobial properties. Fn, able to create a biomimetic interface that could enhance cell attachment and promote extracellular cell matrix remodeling, is incorporated as the anionic polymer during film construction by the LbL technic whereas PLL is used as the cationic polymer for its capacity to confer remarkable antibacterial properties.
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Affiliation(s)
- Anamar Miranda
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Damien Seyer
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Carla Palomino-Durand
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Houda Morakchi-Goudjil
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Mathilde Massonie
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Rémy Agniel
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Hassan Rammal
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
- EFOR Healthcare Paris, Biocompatibility Platform, Levallois-Perret, France
| | - Emmanuel Pauthe
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
- *Correspondence: Emmanuel Pauthe, ; Adeline Gand,
| | - Adeline Gand
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
- *Correspondence: Emmanuel Pauthe, ; Adeline Gand,
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Aerosol-Mediated Non-Viral Lung Gene Therapy: The Potential of Aminoglycoside-Based Cationic Liposomes. Pharmaceutics 2021; 14:pharmaceutics14010025. [PMID: 35056921 PMCID: PMC8778791 DOI: 10.3390/pharmaceutics14010025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/29/2021] [Accepted: 12/14/2021] [Indexed: 11/17/2022] Open
Abstract
Aerosol lung gene therapy using non-viral delivery systems represents a credible therapeutic strategy for chronic respiratory diseases, such as cystic fibrosis (CF). Progress in CF clinical setting using the lipidic formulation GL67A has demonstrated the relevance of such a strategy while emphasizing the need for more potent gene transfer agents. In recent years, many novel non-viral gene delivery vehicles were proposed as potential alternatives to GL67 cationic lipid. However, they were usually evaluated using procedures difficult or even impossible to implement in clinical practice. In this study, a clinically-relevant administration protocol via aerosol in murine lungs was used to conduct a comparative study with GL67A. Diverse lipidic compounds were used to prepare a series of formulations inspired by the composition of GL67A. While some of these formulations were ineffective at transfecting murine lungs, others demonstrated modest-to-very-efficient activities and a series of structure-activity relationships were unveiled. Lipidic aminoglycoside derivative-based formulations were found to be at least as efficient as GL67A following aerosol delivery of a luciferase-encoding plasmid DNA. A single aerosol treatment with one such formulation was found to mediate long-term lung transgene expression, exceeding half the animal's lifetime. This study clearly supports the potential of aminoglycoside-based cationic lipids as potent GL67-alternative scaffolds for further enhanced aerosol non-viral lung gene therapy for diseases such as CF.
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He B, Wang Y, Jiang Z, Liu S, Zhu J. Physical properties and antibacterial activity of the composited films based on carboxymethyl cellulose and gelatin functionalized with ε-polylysine. Int J Biol Macromol 2021; 191:1126-1136. [PMID: 34606788 DOI: 10.1016/j.ijbiomac.2021.09.181] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/21/2021] [Accepted: 09/26/2021] [Indexed: 01/21/2023]
Abstract
Antibacterial composite films were produced from carboxymethyl cellulose-gelatin (CMC-Gel) blend with different concentration of ε-polylysine (ε-PL) and their physical and chemical properties were characterized. Compared with the control CMC-Gel film, the functionalized films had almost indistinguishable crystalline type, thickness, tensile strength, and elongation at break, however, poor water vapor barrier properties. The results showed that the ε-PL was well incorporated into CMC-Gel matrix by electrostatic interaction, as the changes of absorption peaks in the Fourier transform infrared spectrometer and the increase of glass transition temperature in differential scanning calorimeter. The films containing ε-PL showed excellent antibacterial activity against S. aureus, B. subtilis, E. coli and P. aeruginosa. In the composting experiment, the films become degraded on the seventh day, and further degraded with the growth of molds over time. The present results showed that the active films could be a potential material for food packaging.
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Affiliation(s)
- Beibei He
- Laboratory of Muscle and Meat Biophysics, Institute of Biophysics and College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China; Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China
| | - Yifei Wang
- Laboratory of Muscle and Meat Biophysics, Institute of Biophysics and College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zixuan Jiang
- Laboratory of Muscle and Meat Biophysics, Institute of Biophysics and College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shucheng Liu
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China.
| | - Jie Zhu
- Laboratory of Muscle and Meat Biophysics, Institute of Biophysics and College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China; Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China; Laboratory of Muscle Biology & Meat Science, National Beef Cattle Improvement Center, Northwest A&F University, Yangling, Shaanxi 712100, China.
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7
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Blackman LD, Qu Y, Cass P, Locock KES. Approaches for the inhibition and elimination of microbial biofilms using macromolecular agents. Chem Soc Rev 2021; 50:1587-1616. [PMID: 33403373 DOI: 10.1039/d0cs00986e] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biofilms are complex three-dimensional structures formed at interfaces by the vast majority of bacteria and fungi. These robust communities have an important detrimental impact on a wide range of industries and other facets of our daily lives, yet their removal is challenging owing to the high tolerance of biofilms towards conventional antimicrobial agents. This key issue has driven an urgent search for new innovative antibiofilm materials. Amongst these emerging approaches are highly promising materials that employ aqueous-soluble macromolecules, including peptides, proteins, synthetic polymers, and nanomaterials thereof, which exhibit a range of functionalities that can inhibit biofilm formation or detach and destroy organisms residing within established biofilms. In this Review, we outline the progress made in inhibiting and removing biofilms using macromolecular approaches, including a spotlight on cutting-edge materials that respond to environmental stimuli for "on-demand" antibiofilm activity, as well as synergistic multi-action antibiofilm materials. We also highlight materials that imitate and harness naturally derived species to achieve new and improved biomimetic and biohybrid antibiofilm materials. Finally, we share some speculative insights into possible future directions for this exciting and highly significant field of research.
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Affiliation(s)
- Lewis D Blackman
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia.
| | - Yue Qu
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia and Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, VIC 3004, Australia
| | - Peter Cass
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia.
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Lee J, Liu Z, Suzuki PH, Ahrens JF, Lai S, Lu X, Guan S, St-Pierre F. Versatile phenotype-activated cell sorting. SCIENCE ADVANCES 2020; 6:6/43/eabb7438. [PMID: 33097540 PMCID: PMC7608836 DOI: 10.1126/sciadv.abb7438] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 09/10/2020] [Indexed: 05/02/2023]
Abstract
Unraveling the genetic and epigenetic determinants of phenotypes is critical for understanding and re-engineering biology and would benefit from improved methods to separate cells based on phenotypes. Here, we report SPOTlight, a versatile high-throughput technique to isolate individual yeast or human cells with unique spatiotemporal profiles from heterogeneous populations. SPOTlight relies on imaging visual phenotypes by microscopy, precise optical tagging of single target cells, and retrieval of tagged cells by fluorescence-activated cell sorting. To illustrate SPOTlight's ability to screen cells based on temporal properties, we chose to develop a photostable yellow fluorescent protein for extended imaging experiments. We screened 3 million cells expressing mutagenesis libraries and identified a bright new variant, mGold, that is the most photostable yellow fluorescent protein reported to date. We anticipate that the versatility of SPOTlight will facilitate its deployment to decipher the rules of life, understand diseases, and engineer new molecules and cells.
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Affiliation(s)
- Jihwan Lee
- Systems, Synthetic, and Physical Biology Program, Rice University, Houston, TX 77005, USA
| | - Zhuohe Liu
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
| | - Peter H Suzuki
- Department of Bioengineering, Rice University, Houston, TX 77005, USA
| | - John F Ahrens
- Department of Bioengineering, Rice University, Houston, TX 77005, USA
| | - Shujuan Lai
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xiaoyu Lu
- Systems, Synthetic, and Physical Biology Program, Rice University, Houston, TX 77005, USA
| | - Sihui Guan
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
| | - François St-Pierre
- Systems, Synthetic, and Physical Biology Program, Rice University, Houston, TX 77005, USA.
- Department of Electrical and Computer Engineering, Rice University, Houston, TX 77005, USA
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
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The synergistic effects of SrF 2 nanoparticles, YSZ nanoparticles, and poly-ε-l-lysin on physicomechanical, ion release, and antibacterial-cellular behavior of the flowable dental composites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 109:110592. [PMID: 32228986 DOI: 10.1016/j.msec.2019.110592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 12/15/2019] [Accepted: 12/21/2019] [Indexed: 11/23/2022]
Abstract
Resin-based pit-and-fissure sealants (flowable resin composites) were formulated using bisphenol-A-glycerolatedimethacrylate (Bis-GMA)-triethylene glycol dimethacrylate-(TEGDMA)-diurethanedimethacrylate (UDMA) mixed monomers and multiple fillers, including synthetic strontium fluoride (SrF2) nanoparticles as a fluoride-releasing and antibacterial agent, yttria-stabilized zirconia (YSZ) nanoparticles as an auxiliary filler, and poly-ε-l-lysin (ε-PL) as an auxiliary antibacterial agent. Based on the physical, mechanical and initial antibacterial properties, the formulated nano-sealant containing 5 wt% SrF2, 5 wt% YSZ and 0.5 wt% ε-PL was selected as the optimal specimen and examined for ion release and cytotoxicity. The results showed an average release rate of 0.87 μg·cm-2·day-1 in the aqueous medium (pH 6.9) and 1.58 μg·cm-2·day-1 in acidic medium (pH 4.0). The maximum cytotoxicity of 20% toward human bone marrow mesenchymal stem cells (hMSCs) was observed according to the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) cytotoxicity assay and acridine orange staining test. A synergy between SrF2 nanoparticles and ε-PL exhibited a better antibacterial activity in terms of colony reduction compared to the other samples. However, the inclusion of SrF2 and ε-PL caused mechanically weakening of the sealants that was partly compensated by incorporation of YSZ nanoparticles (up to 10 wt%).
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Comparative Evaluation of Combinatory Interaction between Endocannabinoid System Compounds and Poly-L-lysine against Streptococcus mutans Growth and Biofilm Formation. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7258380. [PMID: 32076613 PMCID: PMC7013284 DOI: 10.1155/2020/7258380] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/09/2019] [Accepted: 01/11/2020] [Indexed: 12/14/2022]
Abstract
Endocannabinoid/endocannabinoid-like (EC/EC-like) are natural endogenous compounds which have been found to affect MRSA pathogenicity. Our previous studies showed that EC/EC-like was able to impair staphylococcal biofilm formation and maintenance as well as to alter biofilm-associated virulence factors. In the present study, we investigated the combinatory effect of the selected EC/EC-like with a natural antimicrobial agent, poly-L-lysine, on cariogenic bacteria Streptococcus mutans growth and biofilm formation. Among four tested EC/EC-like, only two, anandamide (AEA) and oleoylethanolamide (OEA), exhibited synergistic combinatory effect with poly-L-lysine against S. mutans. We attribute this distinct effect to differences in the fatty acid chain structure of the selected EC/EC-like compounds. Moreover, AEA exerted a specific antibiofilm mode of action against S. mutans by effecting total inhibition of biofilm formation while still allowing bacteria viability. Finally, we postulate that the presence of EC/EC-like and poly-L-lysine could enhance the permeability and efficacy of each other via hydrophobic and electrostatic interactions with the S. mutans membrane. In conclusion, we assume that a combination of endogenous natural compounds such as EC/EC-like and poly-L-lysine may benefit oral hygiene by preventing dental plaque.
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Alkekhia D, Shukla A. Influence of poly‐
l
‐lysine molecular weight on antibacterial efficacy in polymer multilayer films. J Biomed Mater Res A 2019; 107:1324-1339. [DOI: 10.1002/jbm.a.36645] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 01/10/2019] [Accepted: 01/28/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Dahlia Alkekhia
- School of Engineering Brown University Providence Rhode Island
- Center for Biomedical Engineering Brown University Providence Rhode Island
- Institute for Molecular and Nanoscale Innovation Brown University Providence Rhode Island
| | - Anita Shukla
- School of Engineering Brown University Providence Rhode Island
- Center for Biomedical Engineering Brown University Providence Rhode Island
- Institute for Molecular and Nanoscale Innovation Brown University Providence Rhode Island
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12
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Treatment of Pseudomonas aeruginosa Biofilm Present in Endotracheal Tubes by Poly-l-Lysine. Antimicrob Agents Chemother 2018; 62:AAC.00564-18. [PMID: 30104272 DOI: 10.1128/aac.00564-18] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/06/2018] [Indexed: 11/20/2022] Open
Abstract
The endotracheal tube (ETT) is an essential interface between the patient and ventilator in mechanically ventilated patients. However, a microbial biofilm is formed gradually on this tube and is associated with the development of ventilator-associated pneumonia. The bacteria present in the biofilm are more resistant to antibiotics, and current medical practices do not make it possible to eliminate. Pseudomonas aeruginosa is one of the leading pathogens that cause biofilm infections and ventilator-associated pneumonia. Poly-l-lysine (pLK) is a cationic polypeptide possessing antibacterial properties and mucolytic activity by compacting DNA. Here, we explored the antibiofilm activity of pLK to treat P. aeruginosa biofilms on ETTs while taking into consideration the necessary constraints for clinical translation in our experimental designs. First, we showed that pLK eradicates a P. aeruginosa biofilm formed in vitro on 96-well microplates. We further demonstrated that pLK alters bacterial membrane integrity, as revealed by scanning electron microscopy, and eventually eradicates biofilm formed either by reference or clinical strains of P. aeruginosa biofilms generated in vitro on ETTs. Second, we collected the ETT from patients with P. aeruginosa ventilator-associated pneumonia. We observed that a single dose of pLK is able to immediately disrupt the biofilm structure and kills more than 90% of bacteria present in the biofilm. Additionally, we did not observe any lung tolerance issue when the pLK solution was instilled into the ETT of ventilated pigs, an animal model particularly relevant to mimic invasive mechanical ventilation in humans. In conclusion, pLK appears as an innovative antibiofilm molecule, which could be applied in the ETT of mechanically ventilated patients.
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Guillon A, Sécher T, Dailey LA, Vecellio L, de Monte M, Si-Tahar M, Diot P, Page CP, Heuzé-Vourc'h N. Insights on animal models to investigate inhalation therapy: Relevance for biotherapeutics. Int J Pharm 2017; 536:116-126. [PMID: 29180257 DOI: 10.1016/j.ijpharm.2017.11.049] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 11/20/2017] [Accepted: 11/21/2017] [Indexed: 12/20/2022]
Abstract
Acute and chronic respiratory diseases account for major causes of illness and deaths worldwide. Recent developments of biotherapeutics opened a new era in the treatment and management of patients with respiratory diseases. When considering the delivery of therapeutics, the inhaled route offers great promises with a direct, non-invasive access to the diseased organ and has already proven efficient for several molecules. To assist in the future development of inhaled biotherapeutics, experimental models are crucial to assess lung deposition, pharmacokinetics, pharmacodynamics and safety. This review describes the animal models used in pulmonary research for aerosol drug delivery, highlighting their advantages and limitations for inhaled biologics. Overall, non-clinical species must be selected with relevant scientific arguments while taking into account their complexities and interspecies differences, to help in the development of inhaled medicines and ensure their successful transposition in the clinics.
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Affiliation(s)
- A Guillon
- INSERM, Centre d'Etude des Pathologies Respiratoires, U1100, F-37032, Tours, France; Université François Rabelais de Tours, F-37032, Tours, France; CHRU de Tours, Service de Médecine Intensive - Réanimation, F-37000, Tours, France
| | - T Sécher
- INSERM, Centre d'Etude des Pathologies Respiratoires, U1100, F-37032, Tours, France; Université François Rabelais de Tours, F-37032, Tours, France
| | - L A Dailey
- Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, Wolfgang-Langenbeck Str. 4, 06122, Halle (Saale), Germany
| | - L Vecellio
- INSERM, Centre d'Etude des Pathologies Respiratoires, U1100, F-37032, Tours, France; Aerodrug, Université François Rabelais - Faculté de Médecine, Tours, France
| | - M de Monte
- Plateforme Scientifique et Technique (PST) Animaleries, Université F. Rabelais, F-37000, Tours, France
| | - M Si-Tahar
- INSERM, Centre d'Etude des Pathologies Respiratoires, U1100, F-37032, Tours, France; Université François Rabelais de Tours, F-37032, Tours, France
| | - P Diot
- INSERM, Centre d'Etude des Pathologies Respiratoires, U1100, F-37032, Tours, France; Université François Rabelais de Tours, F-37032, Tours, France; CHRU de Tours, Service de Pneumologie, F-37000, Tours, France
| | - C P Page
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - N Heuzé-Vourc'h
- INSERM, Centre d'Etude des Pathologies Respiratoires, U1100, F-37032, Tours, France; Université François Rabelais de Tours, F-37032, Tours, France.
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14
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Enhancement of lung gene delivery after aerosol: a new strategy using non-viral complexes with antibacterial properties. Biosci Rep 2017; 37:BSR20160618. [PMID: 29046368 PMCID: PMC5691145 DOI: 10.1042/bsr20160618] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/09/2017] [Accepted: 10/10/2017] [Indexed: 02/06/2023] Open
Abstract
The pathophysiology of obstructive pulmonary diseases, such as cystic fibrosis (CF), leads to the development of chronic infections in the respiratory tract. Thus, the symptomatic management of the disease requires, in particular, repetitive antibiotherapy. Besides these antibacterial treatments, certain pathologies, such as CF or chronic obstructive pulmonary disease (COPD), require the intake of many drugs. This simultaneous absorption may lead to undesirable drug interactions. For example, Orkambi® (lumacaftor/Ivacaftor, Vertex), a pharmacological drug employed to treat F508del patients, cannot be used with antibiotics such as rifampicin or rifabutin (rifamycin family) which are necessary to treat Mycobacteriaceae. As far as gene therapy is concerned, bacteria and/or biofilm in the airways present an additional barrier for gene transfer. Thus, aerosol administration of nanoparticles have to overcome many obstacles before allowing cellular penetration of therapeutic compounds. This review focusses on the development of aerosol formulations adapted to the respiratory tract and its multiple barriers. Then, formulations that are currently used in clinical applications are summarized depending on the active molecule delivered. Finally, we focus on new therapeutic approaches to reduce possible drug interactions by transferring the antibacterial activity to the nanocarrier while ensuring the transfection efficiency.
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15
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Mottais A, Berchel M, Sibiril Y, Laurent V, Gill D, Hyde S, Jaffrès PA, Montier T, Le Gall T. Antibacterial effect and DNA delivery using a combination of an arsonium-containing lipophosphoramide with an N-heterocyclic carbene-silver complex - Potential benefits for cystic fibrosis lung gene therapy. Int J Pharm 2017; 536:29-41. [PMID: 29138047 DOI: 10.1016/j.ijpharm.2017.11.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 10/01/2017] [Accepted: 11/10/2017] [Indexed: 01/05/2023]
Abstract
Cystic Fibrosis (CF), the most common chronic genetic disorder among the Caucasian population, is a life-threatening disease mainly due to respiratory failures resulting from chronic infections and inflammation. Although research in the pharmacological field has recently made significant progress, gene therapy still remains a promising strategy to cure CF, especially because it should be applicable to any patient whatever the mutation profile. Until now, little attention has been paid to bacterial lung infections with regard to gene delivery to the airways; yet, this could greatly impact on the success of gene therapy. Previously, we have reported arsonium-containing lipophosphoramides as poly-functional nanocarriers capable of simultaneous antibacterial action against Gram-positive bacteria and gene transfer into eukaryotic cells. In the present work, we show that such nanoparticles can also be combined with an N-heterocyclic carbene-silver complex in order to extend the spectrum of antibacterial activity, including towards the Gram-negative Pseudomonas aeruginosa. Importantly, this is demonstrated not only using standard in vitro protocols but also a clinically-relevant aerosol delivery method. Furthermore, antibacterial effects are compatible with efficient and safe gene delivery into human bronchial epithelial cells. The poly-functionality of combinations of such chemical compounds may thus show benefits for CF lung gene therapy.
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Affiliation(s)
- Angélique Mottais
- "Gene Transfer and Gene Therapy Team", INSERM UMR 1078, IBSAM, Laboratoire de Génétique Moléculaire et Histocompatibilité, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 Avenue Camille Desmoulins, 29238 Brest, France
| | - Mathieu Berchel
- CEMCA, UMR CNRS 6521, IBSAM, UFR Sciences, 6 Avenue Victor Le Gorgeu, 29238 Brest, France
| | - Yann Sibiril
- "Gene Transfer and Gene Therapy Team", INSERM UMR 1078, IBSAM, Laboratoire de Génétique Moléculaire et Histocompatibilité, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 Avenue Camille Desmoulins, 29238 Brest, France
| | - Véronique Laurent
- "Gene Transfer and Gene Therapy Team", INSERM UMR 1078, IBSAM, Laboratoire de Génétique Moléculaire et Histocompatibilité, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 Avenue Camille Desmoulins, 29238 Brest, France
| | - Deborah Gill
- "Gene Medicine Group", Radcliffe Department of Medicine (Clinical Laboratory Sciences), John Radcliffe Hospital, University of Oxford, OX3 9DU, United Kingdom
| | - Stephen Hyde
- "Gene Medicine Group", Radcliffe Department of Medicine (Clinical Laboratory Sciences), John Radcliffe Hospital, University of Oxford, OX3 9DU, United Kingdom
| | - Paul-Alain Jaffrès
- CEMCA, UMR CNRS 6521, IBSAM, UFR Sciences, 6 Avenue Victor Le Gorgeu, 29238 Brest, France
| | - Tristan Montier
- "Gene Transfer and Gene Therapy Team", INSERM UMR 1078, IBSAM, Laboratoire de Génétique Moléculaire et Histocompatibilité, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 Avenue Camille Desmoulins, 29238 Brest, France.
| | - Tony Le Gall
- "Gene Transfer and Gene Therapy Team", INSERM UMR 1078, IBSAM, Laboratoire de Génétique Moléculaire et Histocompatibilité, UFR Médecine et Sciences de la Santé, CHRU Brest, 22 Avenue Camille Desmoulins, 29238 Brest, France.
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16
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Efficacy of Rhesus Theta-Defensin-1 in Experimental Models of Pseudomonas aeruginosa Lung Infection and Inflammation. Antimicrob Agents Chemother 2017; 61:AAC.00154-17. [PMID: 28559270 DOI: 10.1128/aac.00154-17] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 05/21/2017] [Indexed: 12/19/2022] Open
Abstract
Chronic airway infection and inflammation contribute to the progressive loss of lung function and shortened survival of patients with cystic fibrosis (CF). Rhesus theta defensin-1 (RTD-1) is a macrocyclic host defense peptide with antimicrobial and immunomodulatory activities. Combined with favorable preclinical safety and peptide stability data, RTD-1 warrants investigation to determine its therapeutic potential for treatment of CF lung disease. We sought to evaluate the therapeutic potential of RTD-1 for CF airway infection and inflammation using in vitro, ex vivo, and in vivo models. We evaluated RTD-1's effects on basal and Pseudomonas aeruginosa-induced inflammation in CF sputum leukocytes and CF bronchial epithelial cells. Peptide stability was evaluated by incubation with CF sputum. Airway pharmacokinetics, safety, and tolerance studies were performed in naive mice. Aerosolized RTD-1 treatment effects were assessed by analyzing lung bacterial burdens and airway inflammation using an established model of chronic P. aeruginosa endobronchial infection in CF (ΔF508) mice. RTD-1 directly reduces metalloprotease activity, as well as inflammatory cytokine secretion from CF airway leukocyte and bronchial epithelial cells. Intrapulmonary safety, tolerability, and stability data support the aerosol administration route. RTD-1 reduced the bacterial lung burden, airway neutrophils, and inflammatory cytokines in CF mice with chronic P. aeruginosa lung infection. Collectively, these studies support further development of RTD-1 for treatment of CF airway disease.
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17
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Hamon Y, Legowska M, Hervé V, Dallet-Choisy S, Marchand-Adam S, Vanderlynden L, Demonte M, Williams R, Scott CJ, Si-Tahar M, Heuzé-Vourc'h N, Lalmanach G, Jenne DE, Lesner A, Gauthier F, Korkmaz B. Neutrophilic Cathepsin C Is Maturated by a Multistep Proteolytic Process and Secreted by Activated Cells during Inflammatory Lung Diseases. J Biol Chem 2016; 291:8486-99. [PMID: 26884336 DOI: 10.1074/jbc.m115.707109] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Indexed: 11/06/2022] Open
Abstract
The cysteine protease cathepsin C (CatC) activates granule-associated proinflammatory serine proteases in hematopoietic precursor cells. Its early inhibition in the bone marrow is regarded as a new therapeutic strategy for treating proteolysis-driven chronic inflammatory diseases, but its complete inhibition is elusive in vivo Controlling the activity of CatC may be achieved by directly inhibiting its activity with a specific inhibitor or/and by preventing its maturation. We have investigated immunochemically and kinetically the occurrence of CatC and its proform in human hematopoietic precursor cells and in differentiated mature immune cells in lung secretions. The maturation of proCatC obeys a multistep mechanism that can be entirely managed by CatS in neutrophilic precursor cells. CatS inhibition by a cell-permeable inhibitor abrogated the release of the heavy and light chains from proCatC and blocked ∼80% of CatC activity. Under these conditions the activity of neutrophil serine proteases, however, was not abolished in precursor cell cultures. In patients with neutrophilic lung inflammation, mature CatC is found in large amounts in sputa. It is secreted by activated neutrophils as confirmed through lipopolysaccharide administration in a nonhuman primate model. CatS inhibitors currently in clinical trials are expected to decrease the activity of neutrophilic CatC without affecting those of elastase-like serine proteases.
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Affiliation(s)
- Yveline Hamon
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France, Comprehensive Pneumology Center, Institute of Lung Biology and Disease, German Center for Lung Research (DZL), 81377 Munich and Max Planck Institute of Neurobiology, 82152 Planegg-Martinsried, Germany
| | - Monika Legowska
- Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland
| | - Virginie Hervé
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Sandrine Dallet-Choisy
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Sylvain Marchand-Adam
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Lise Vanderlynden
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Michèle Demonte
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Rich Williams
- Queen's University Belfast, Lisburn Road, Belfast, BT9 7BL, United Kingdom, and
| | - Christopher J Scott
- Queen's University Belfast, Lisburn Road, Belfast, BT9 7BL, United Kingdom, and
| | - Mustapha Si-Tahar
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Nathalie Heuzé-Vourc'h
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Gilles Lalmanach
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Dieter E Jenne
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, German Center for Lung Research (DZL), 81377 Munich and Max Planck Institute of Neurobiology, 82152 Planegg-Martinsried, Germany
| | - Adam Lesner
- Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland
| | - Francis Gauthier
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France
| | - Brice Korkmaz
- From the INSERM U-1100, "Centre d'Etude des Pathologies Respiratoires" and Université François Rabelais, 37032, Tours, France,
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18
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The neutrophil-recruiting chemokine GCP-2/CXCL6 is expressed in cystic fibrosis airways and retains its functional properties after binding to extracellular DNA. Mucosal Immunol 2016; 9:112-23. [PMID: 25993443 DOI: 10.1038/mi.2015.43] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 04/02/2015] [Indexed: 02/06/2023]
Abstract
Infections in cystic fibrosis (CF), often involving Pseudomonas aeruginosa, result from a dysregulated airway immunity where one hallmark is the accumulation of necrotic and apoptotic immune cells, in particular neutrophils. In addition, neutrophils actively release DNA, forming neutrophil extracellular traps (NETs) that contain antimicrobial proteins. Altogether, free DNA in complex with actin accumulates in the airway lumen, resulting in highly viscous sputum that provides an anionic matrix, binding cationic antimicrobial proteins. In this study, granulocyte chemotactic protein 2 (GCP-2)/CXCL6, a neutrophil-activating chemokine with bactericidal properties, was detected in the airway epithelium of CF patients and was also present in azurophilic and specific granules of neutrophils. Elastase of neutrophils, but not of P. aeruginosa, completely degraded CXCL6 (chemokine (C-X-C motif) ligand 6). In addition, CXCL6 colocalized with extracellular DNA in both CF sputa and in in vitro-formed NETs. In vitro, CXCL6 bound DNA with a KD of 2,500 nM. Interestingly, both the bactericidal and the receptor-activating properties of CXCL6 (against neutrophils) remained largely unaffected in the presence of DNA. However, the chemotactic properties of CXCL6 were reduced by the presence of DNA. Taken together, CXCL6 is expressed in CF, retaining its functional properties even after binding to the anionic scaffold that extracellular DNA provides in CF.
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19
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The Role of Serine Proteases and Antiproteases in the Cystic Fibrosis Lung. Mediators Inflamm 2015; 2015:293053. [PMID: 26185359 PMCID: PMC4491392 DOI: 10.1155/2015/293053] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/08/2015] [Indexed: 12/05/2022] Open
Abstract
Cystic fibrosis (CF) lung disease is an inherited condition with an incidence rate of approximately 1 in 2500 new born babies. CF is characterized as chronic infection of the lung which leads to inflammation of the airway. Sputum from CF patients contains elevated levels of neutrophils and subsequently elevated levels of neutrophil serine proteases. In a healthy individual these proteases aid in the phagocytic process by degrading microbial peptides and are kept in homeostatic balance by cognate antiproteases. Due to the heavy neutrophil burden associated with CF the high concentration of neutrophil derived proteases overwhelms cognate antiproteases. The general effects of this protease/antiprotease imbalance are impaired mucus clearance, increased and self-perpetuating inflammation, and impaired immune responses and tissue. To restore this balance antiproteases have been suggested as potential therapeutics or therapeutic targets. As such a number of both endogenous and synthetic antiproteases have been trialed with mixed success as therapeutics for CF lung disease.
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20
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Affiliation(s)
- Manu Jain
- 1 Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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21
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