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Lin C, Wang Y, Le M, Chen KF, Jia YG. Recent Progress in Bile Acid-Based Antimicrobials. Bioconjug Chem 2021; 32:395-410. [PMID: 33683873 DOI: 10.1021/acs.bioconjchem.0c00642] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
With the emergence of drug-resistant bacteria and the formation of biofilms by bacteria and fungi, microbial infections gradually threaten global health. Natural antimicrobial peptides (AMPs) have low susceptibility for developing resistance due to the membrane targeted mechanism, but instability and high manufacturing cost limit their applications in clinic. Bile acids, a group of steroids in the human body, with high stability, biocompatibility, and inherent facial amphiphilic structure similar to the characteristics of AMPs, have been applied to the biological field, such as drug delivery systems, self-healing hydrogels, antimicrobials, and so on. In this review, we mainly focus on the different classes of bile acid-based antimicrobials in recent years. Various designs and methods for the preparation of unimolecular antimicrobials with bile acid skeletons are first introduced, including coupling of primary amine, quaternary ammonium, and amino acid units with bile acid skeletons. Some representative oligomeric antimicrobials, including dimers of bile acids, are summarized. Finally, macromolecular antimicrobials bearing some positive charges at the main chain or side chain and interaction mechanisms of these bile acid-based antimicrobials are discussed.
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Affiliation(s)
- Caihong Lin
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Yushi Wang
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Mengqi Le
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Kai-Feng Chen
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China
| | - Yong-Guang Jia
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China.,Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510006, China.,Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China
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54
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Pranantyo D, Raju C, Si Z, Xu X, Pethe K, Kang ET, Chan-Park MB. Nontoxic Antimicrobial Cationic Peptide Nanoconstructs with Bacteria-Displaceable Polymeric Counteranions. NANO LETTERS 2021; 21:899-906. [PMID: 33448223 DOI: 10.1021/acs.nanolett.0c03261] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Antimicrobial peptides that target the integrity of bacterial envelopes can eradicate pathogens with little development of resistance, but they often inflict nonselective toxicity toward mammalian cells. The prevailing approach to optimize the selectivity of cationic peptides has been to modify their composition. Instead, we invent a new generation of broad-spectrum antibacterial nanoconstructs with negligible mammalian cell toxicity through a competitive displacement of counter polyanions from the complementary polycations. The nanoconstruct, which has a highly cationic Au nanoparticles (NPs) core shielded by polymeric counterions, is inert in nonbacterial environments. When exposed to negatively charged bacterial envelopes, this construct sheds its polyanions, triggering a cationic Au NP/bacterial membrane interaction that rapidly kills Gram-positive and Gram-negative bacteria. The anionic charge and hydrophilicity of the polyanion provides charge neutralization for the peptide-decorated Au NP core, but it is also bacteria-displaceable. These results provide a foundation for the development of other cationic particles and polymeric counterion combinations with potent antimicrobial activity without toxicity.
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Affiliation(s)
- Dicky Pranantyo
- Centre of Antimicrobial Bioengineering School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Department of Chemical & Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4, Kent Ridge 117585, Singapore
| | - Cheerlavancha Raju
- Centre of Antimicrobial Bioengineering School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Zhangyong Si
- Centre of Antimicrobial Bioengineering School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Xiaofei Xu
- Centre of Antimicrobial Bioengineering School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Kevin Pethe
- Lee Kong Chian School of Medicine Nanyang Technological University, 59 Nanyang Drive, Singapore 636921, Singapore
| | - En-Tang Kang
- Department of Chemical & Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4, Kent Ridge 117585, Singapore
| | - Mary B Chan-Park
- Centre of Antimicrobial Bioengineering School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Lee Kong Chian School of Medicine Nanyang Technological University, 59 Nanyang Drive, Singapore 636921, Singapore
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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55
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Gbian DL, Omri A. Current and novel therapeutic strategies for the management of cystic fibrosis. Expert Opin Drug Deliv 2021; 18:535-552. [PMID: 33426936 DOI: 10.1080/17425247.2021.1874343] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Introduction: Cystic fibrosis (CF), is caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene and affects thousands of people throughout the world. Lung disease is the leading cause of death in CF patients. Despite the advances in treatments, the management of CF mainly targets symptoms. Recent CFTR modulators however target common mutations in patients, alleviating symptoms of CF. Unfortunately, there is still no approved treatments for patients with rare mutations to date.Areas covered: This paper reviews current treatments of CF that mitigate symptoms and target genetic defects. The use of gene and drug delivery systems such as viral or non-viral vectors and nano-compounds to enhance CFTR expression and the activity of antimicrobials against chronic pulmonary infections respectively, will also be discussed.Expert opinion: Nano-compounds tackle biological barriers to drug delivery and revitalize antimicrobials, anti-inflammatory drugs and even genes delivery to CF patients. Gene therapy and gene editing are of particular interest because they have the potential to directly target genetic defects. Nanoparticles should be formulated to more specifically target epithelial cells, and biofilms. Finally, the development of more potent gene vectors to increase the duration of gene expression and reduce inflammation is a promising strategy to eventually cure CF.
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Affiliation(s)
- Douweh Leyla Gbian
- The Novel Drug and Vaccine Delivery Systems Facility, Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
| | - Abdelwahab Omri
- The Novel Drug and Vaccine Delivery Systems Facility, Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
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56
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Facile Synthesis of Long-Term Stable Silver Nanoparticles by Kaempferol and Their Enhanced Antibacterial Activity Against Escherichia coli and Staphylococcus aureus. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-020-01874-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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57
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He T, Narumi A, Wang Y, Xu L, Sato SI, Shen X, Kakuchi T. Amphiphilic diblock copolymers of poly(glycidol) with biodegradable polyester/polycarbonate. organocatalytic one-pot ROP and self-assembling property. Polym Chem 2021. [DOI: 10.1039/d1py01026c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Poly(glycidol)-based block copolymers with excellent micelle formation properties were prepared via organocatalytic one-pot ROP.
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Affiliation(s)
- Tingyu He
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Atsushi Narumi
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yanqiu Wang
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Liang Xu
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
| | - Shin-ichiro Sato
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Xiande Shen
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
- Chongqing Research Institute, Changchun University of Science and Technology, No. 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing City 401135, China
| | - Toyoji Kakuchi
- Research Center for Polymer Materials, School of Materials Science and Engineering, Changchun University of Science and Technology, Weixing Road 7989, Jilin 130022, China
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
- Chongqing Research Institute, Changchun University of Science and Technology, No. 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing City 401135, China
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58
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Makabenta JMV, Nabawy A, Li CH, Schmidt-Malan S, Patel R, Rotello VM. Nanomaterial-based therapeutics for antibiotic-resistant bacterial infections. Nat Rev Microbiol 2021; 19:23-36. [PMID: 32814862 PMCID: PMC8559572 DOI: 10.1038/s41579-020-0420-1] [Citation(s) in RCA: 486] [Impact Index Per Article: 162.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2020] [Indexed: 12/22/2022]
Abstract
Antibiotic-resistant bacterial infections arising from acquired resistance and/or through biofilm formation necessitate the development of innovative 'outside of the box' therapeutics. Nanomaterial-based therapies are promising tools to combat bacterial infections that are difficult to treat, featuring the capacity to evade existing mechanisms associated with acquired drug resistance. In addition, the unique size and physical properties of nanomaterials give them the capability to target biofilms, overcoming recalcitrant infections. In this Review, we highlight the general mechanisms by which nanomaterials can be used to target bacterial infections associated with acquired antibiotic resistance and biofilms. We emphasize design elements and properties of nanomaterials that can be engineered to enhance potency. Lastly, we present recent progress and remaining challenges for widespread clinical implementation of nanomaterials as antimicrobial therapeutics.
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Affiliation(s)
| | - Ahmed Nabawy
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, USA
| | - Cheng-Hsuan Li
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, USA
| | - Suzannah Schmidt-Malan
- Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Robin Patel
- Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, USA.
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59
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Yuan X, Wang C, Chen J, Shu X, Chai Y, Meng Z, Hou D, Li C, Meng Q. Oligo( para-phenylenes)s–Oligoarginine Conjugates as Effective Antibacterial Agents with High Plasma Stability and Low Hemolysis. ACS APPLIED BIO MATERIALS 2020; 3:8532-8541. [DOI: 10.1021/acsabm.0c00904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xingyi Yuan
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, P. R. China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P. R. China
| | - Chenhong Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P. R. China
| | - Junyi Chen
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P. R. China
| | - Xiaoyan Shu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, P. R. China
| | - Yao Chai
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P. R. China
| | - Zhao Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P. R. China
| | - Dabin Hou
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, P. R. China
| | - Chunju Li
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, P. R. China
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P. R. China
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60
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Zhao S, Huang W, Wang C, Wang Y, Zhang Y, Ye Z, Zhang J, Deng L, Dong A. Screening and Matching Amphiphilic Cationic Polymers for Efficient Antibiosis. Biomacromolecules 2020; 21:5269-5281. [PMID: 33226784 DOI: 10.1021/acs.biomac.0c01330] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The amphiphilic cationic polymers that mimic antimicrobial peptides have received increasing attention due to their excellent antibacterial activity. However, the relationship between the structure of cationic polymers and its antibacterial effect remains unclear. In our current work, a series of PEG blocked amphiphilic cationic polymers composed of hydrophobic alkyl-modified and quaternary ammonium salt (QAS) moieties have been prepared. The structure-antibacterial activity relationship of these cationic polymers was investigated against E. coli and S. aureus, including PEGylation, random structure, molecular weights, and the content and lengths of the hydrophobic alkyl side chains. The results indicated that PEGylated random amphiphilic cationic copolymer (mPB35/T57) showed stronger antibacterial activity and better biocompatibility than the random copolymer without PEG (PB33/T56). Furthermore, mPB35/T57 with appropriate mole fraction of alkyl side chains (falkyl = 0.38), degree of polymerization (DP = 92), and four-carbon hydrophobic alkyl moieties was found to have the optimal structure that revealed the best antibacterial activities against both E. coli (MIC = 8 μg/mL, selectivity > 250) and S. aureus (MIC = 4 μg/mL, selectivity > 500). More importantly, mPB35/T57 could effectively eradicate E. coli biofilms by killing the bacteria embedded in the biofilms. Therefore, the structure of mPB35/T57 provided valuable information for improving the antibacterial activity of cationic polymers.
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Affiliation(s)
- Shuyue Zhao
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Wenjun Huang
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Changrong Wang
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Yaping Wang
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - YuFeng Zhang
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhanpeng Ye
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Jianhua Zhang
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Liandong Deng
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Anjie Dong
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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Zheng L, Li J, Yu M, Jia W, Duan S, Cao D, Ding X, Yu B, Zhang X, Xu FJ. Molecular Sizes and Antibacterial Performance Relationships of Flexible Ionic Liquid Derivatives. J Am Chem Soc 2020; 142:20257-20269. [PMID: 33179921 DOI: 10.1021/jacs.0c10771] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cationic agents, such as ionic liquids (ILs)-based species, have broad-spectrum antibacterial activities. However, the antibacterial mechanisms lack systematic and molecular-level research, especially for Gram-negative bacteria, which have highly organized membrane structures. Here, we designed a series of flexible fluorescent diketopyrrolopyrrole-based ionic liquid derivatives (ILDs) with various molecular sizes (1.95-4.2 nm). The structure-antibacterial activity relationships of the ILDs against Escherichia coli (E. coli) were systematically studied thorough antibacterial tests, fluorescent tracing, morphology analysis, molecular biology, and molecular dynamics (MD) simulations. ILD-6, with a relatively small molecular size, could penetrate through the bacterial membrane, leading to membrane thinning and intracellular activities. ILD-6 showed fast and efficient antimicrobial activity. With the increase of molecular sizes, the corresponding ILDs were proven to intercalate into the bacterial membrane, leading to the destabilization of the lipid bilayer and further contributing to the antimicrobial activities. Moreover, the antibacterial activity of ILD-8 was limited, where the size was not large enough to introduce significant membrane disorder. Relative antibacterial experiments using another common Gram-negative bacteria, Pseudomonas aeruginosa (PAO1), further confirmed the proposed structure-antibacterial activity relationships of ILDs. More impressively, both ILD-6 and ILD-12 displayed significant in vivo therapeutic effects on the PAO1-infected rat model, while ILD-8 performed poorly, which confirmed the antibacterial mechanism of ILDs and proved their potentials for future application. This work clarifies the interactions between molecular sizes of ionic liquid-based species and Gram-negative bacteria and will provide useful guidance for the rational design of high-performance antibacterial agents.
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Affiliation(s)
- Liang Zheng
- State Key Laboratory of Chemical Resource Engineering, Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Jing Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, and State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Manman Yu
- State Key Laboratory of Chemical Resource Engineering, Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Weibin Jia
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, and State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Shun Duan
- State Key Laboratory of Chemical Resource Engineering, Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Dapeng Cao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, and State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Bingran Yu
- State Key Laboratory of Chemical Resource Engineering, Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xianren Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, and State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, P. R. China
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62
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Zhang S, Zhu P, He J, Dong S, Li P, Zhang CY, Ma T. TME-Responsive Polyprodrug Micelles for Multistage Delivery of Doxorubicin with Improved Cancer Therapeutic Efficacy in Rodents. Adv Healthc Mater 2020; 9:e2000387. [PMID: 32815646 DOI: 10.1002/adhm.202000387] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/28/2020] [Indexed: 01/05/2023]
Abstract
It is of great significance to develop multifunctional biomaterials to effectively deliver anticancer drug to tumor cells for cancer therapy. Here, inspired by the specific tumor microenvironment (TME) cues, a unique multistage pH/redox-responsive polyprodrug composed of amphiphilic pH-sensitive diblock copolymer poly(ethylene glycol) methyl ether-b-poly(β-amino esters) conjugated with doxorubicin (DOX) via redox-sensitive disulfide bonds (mPEG-b-PAE-ss-DOX) is designed and developed. This polyprodrug can self-assemble into micelles (DOX-ss@PMs) at low concentration with high serum stability, indicating that DOX-ss@PMs have prolonged circulation time. The dual pH/redox-responsiveness of the multistage platform is thoroughly evaluated. In vitro results demonstrate that DOX-ss@PMs can highly accumulate at tumor site, followed by responding to the acidity for disassembly and effectively penetrating into the tumor cells. DOX is released from the platform due to the cleavage of disulfide bonds induced by high glutathione (GSH) concentration, thereby inducing the apoptosis of tumor cells. In vivo studies further reveal that multistage DOX-ss@PMs can more efficiently inhibit the growth of tumors and improve the survival of tumor-bearing mice in comparison to the free drug and control. These results imply that multistage delivery system might be a potential and effective strategy for drug delivery and DOX-ss@PMs could be a promising nanomedicine for cancer chemotherapy.
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Affiliation(s)
- Shuguang Zhang
- Department of Thoracic Surgery The First Affiliated Hospital of China Medical University Shenyang 110001 P. R. China
| | - Peiyao Zhu
- Department of Thoracic Surgery The First Affiliated Hospital of China Medical University Shenyang 110001 P. R. China
| | - Jiayuan He
- Department of Neurobiology School of Life Sciences China Medical University Shenyang 110001 P. R. China
| | - Siyuan Dong
- Department of Thoracic Surgery The First Affiliated Hospital of China Medical University Shenyang 110001 P. R. China
| | - Peiwen Li
- Department of Thoracic Surgery The First Affiliated Hospital of China Medical University Shenyang 110001 P. R. China
| | - Can Yang Zhang
- Singapore‐MIT Alliance for Research and Technology 1 CREATE Way, 03‐12/13/14 Enterprise Wing Singapore 138602 Singapore
| | - Teng Ma
- Department of Neurobiology School of Life Sciences China Medical University Shenyang 110001 P. R. China
- Key Laboratory of Cell Biology, Ministry of Public Health of China, and Key Laboratory of Medical Cell Biology Ministry of Education of China China Medical University Shenyang 110122 China
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63
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Salas-Ambrosio P, Tronnet A, Verhaeghe P, Bonduelle C. Synthetic Polypeptide Polymers as Simplified Analogues of Antimicrobial Peptides. Biomacromolecules 2020; 22:57-75. [PMID: 32786537 DOI: 10.1021/acs.biomac.0c00797] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Antimicrobial peptides (AMPs) are naturally occurring macromolecules made of amino acids that are potent broad-spectrum antibiotics with potential as novel therapeutic agents. This review aims to summarize the fundamental principles concerning the structure and mechanism of action of these AMPs, in order to guide the design of polymeric analogues that organic chemistry can generate. Among those simplified analogues, this review particularly focuses on those made of amino acids called polypeptide polymers: they are showing great potential by providing one of the best biomimetic and bioactive structures for further biomaterials science applications.
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Affiliation(s)
| | - Antoine Tronnet
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse 31400, France
| | - Pierre Verhaeghe
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse 31400, France
| | - Colin Bonduelle
- Université Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
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64
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Liang G, Shi H, Qi Y, Li J, Jing A, Liu Q, Feng W, Li G, Gao S. Specific Anti-biofilm Activity of Carbon Quantum Dots by Destroying P. gingivalis Biofilm Related Genes. Int J Nanomedicine 2020; 15:5473-5489. [PMID: 32801701 PMCID: PMC7406331 DOI: 10.2147/ijn.s253416] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 06/09/2020] [Indexed: 12/29/2022] Open
Abstract
Introduction Biofilms protect bacteria from antibiotics and this can produce drug-resistant strains, especially the main pathogen of periodontitis, Porphyromonas gingivalis. Carbon quantum dots with various biomedical properties are considered to have great application potential in antibacterial and anti-biofilm treatment. Methods Tinidazole carbon quantum dots (TCDs) and metronidazole carbon quantum dots (MCDs) were prepared by a hydrothermal method with the clinical antibacterial drugs tinidazole and metronidazole, respectively. Then, TCDs and MCDs were characterized by transmission electron microscopy, UV–visible spectroscopy, infrared spectroscopy and energy-dispersive spectrometry. The antibacterial effects were also investigated under different conditions. Results The TCDs and MCDs had uniform sizes. The results of UV–visible and energy-dispersive spectrometry confirmed their important carbon polymerization structures and the activity of the nitro group, which had an evident inhibitory effect on P. gingivalis, but almost no effect on other bacteria, including Escherichia coli, Staphylococcus aureus and Prevotella nigrescens. Importantly, the TCDs could penetrate the biofilms to further effectively inhibit the growth of P. gingivalis under the biofilms. Furthermore, it was found that the antibacterial effect of TCDs lies in its ability to impair toxicity by inhibiting the major virulence factors and related genes involved in the biofilm formation of P. gingivalis, thus affecting the self-assembly of biofilm-related proteins. Conclusion The findings demonstrate a promising new method for improving the efficiency of periodontitis treatment by penetrating the P. gingivalis biofilm with preparations of nano-level antibacterial drugs.
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Affiliation(s)
- Gaofeng Liang
- Medical College, Henan University of Science and Technology, Luoyang 471023, People's Republic of China.,Henan Key Laboratory of Cancer Epigenetics, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Hao Shi
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Yijun Qi
- Medical College, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Jinghua Li
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Aihua Jing
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Qiwei Liu
- Henan Key Laboratory of Cancer Epigenetics, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Wenpo Feng
- Medical College, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Guangda Li
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, People's Republic of China
| | - Shegan Gao
- Medical College, Henan University of Science and Technology, Luoyang 471023, People's Republic of China.,Henan Key Laboratory of Cancer Epigenetics, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang 471023, People's Republic of China
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65
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Hou C, He W, Wang Z, Yi B, Hu Z, Wang W, Deng X, Yao X. Particulate-Aggregated Adhesives with Exudate-Sensitive Properties and Sustained Bacteria Disinfection to Facilitate Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31090-31098. [PMID: 32613825 DOI: 10.1021/acsami.0c04920] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Wound-associated infections create additional suffering and come at a high cost for patients and their families, which urgently require wound disinfection biomaterials with improved healing efficacy. Here, we report an adhesive with sustained bacteria disinfection ability, which is aggregated from hydrogen-bonded polymer particulates. The particulate-aggregated adhesive shows strong binding ability on different surfaces from rigid substrates to soft skins. Moreover, water-sensitive mechanical properties are shown in wound exudates, resulting from the dissociation of hydrogen bonds under the competition of water and thus the sustained release of particulates. Synergizing with the strong binding ability, exudate-sensitive behaviors, and sustained release of antibacterial particulates, the adhesive achieves sustained bactericidal activity and can facilitate the healing process in bacteria-infected skin wounds.
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Affiliation(s)
- Changshun Hou
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Wenqing He
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Zhaoyue Wang
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Bo Yi
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, P. R. China
| | - Zuojun Hu
- Division of Vascular Surgery, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan 2nd Street, Yuexiu District, Guangzhou 510080, P. R. China
| | - Wei Wang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, Tianjin 300457, P. R. China
| | - Xin Deng
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, P. R. China
- City University of Hong Kong, Shenzhen Research Institute, Shenzhen 518075, P. R. China
| | - Xi Yao
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, P. R. China
- City University of Hong Kong, Shenzhen Research Institute, Shenzhen 518075, P. R. China
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Gupta A, Makabenta JMV, Schlüter F, Landis RF, Das R, Cuppels M, Rotello VM. Functionalized Polymers Enhance Permeability of Antibiotics in Gram-negative MDR Bacteria and Biofilms for Synergistic Antimicrobial Therapy. ADVANCED THERAPEUTICS 2020; 3:2000005. [PMID: 35531049 PMCID: PMC9075683 DOI: 10.1002/adtp.202000005] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Indexed: 08/27/2023]
Abstract
The emergence of multi-drug resistant pathogenic bacteria constitutes a key threat to global health. Infections caused by multi-drug resistant Gram-negative bacteria are particularly challenging to treat due to the ability of pathogens to prevent antibiotic penetration inside the bacterial membrane. Antibiotic therapy is further rendered ineffective due to biofilm formation where the protective Extracellular Polymeric Substance (EPS) matrix limits the diffusion of antibiotics inside the biofilm. We hypothesized that careful engineering of chemical groups on polymer scaffolds could enable polymers to penetrate the barriers of Gram-negative bacterial membrane and biofilm matrix. Here, we present the use of engineered polymeric nanoparticles in combination with antibiotics for synergistic antimicrobial therapy. These polymeric nanoparticles enhance the accumulation of antibiotics inside Gram-negative bacteria and biofilm matrix, resulting in increased potency of antibiotics in combination therapy. Sub-lethal concentrations of engineered polymeric nanoparticles reduce the antibiotic dosage by 32-fold to treat MDR bacteria and biofilms. Tailoring of chemical groups on polymers demonstrate a strong-structure activity relationship in generating additive and synergistic combinations with antibiotics. This study demonstrates the ability of polymeric nanoparticles to 'rejuvenate' antibiotics rendered ineffective by resistant bacteria and provides a rationale to design novel compounds to achieve effective antimicrobial combination therapies.
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Affiliation(s)
- Akash Gupta
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Jessa Marie Valenzuela Makabenta
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Friederike Schlüter
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Ryan F Landis
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Riddha Das
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Madison Cuppels
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
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67
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Ran HH, Cheng X, Bao YW, Hua XW, Gao G, Zhang X, Jiang YW, Zhu YX, Wu FG. Multifunctional quaternized carbon dots with enhanced biofilm penetration and eradication efficiencies. J Mater Chem B 2020; 7:5104-5114. [PMID: 31432881 DOI: 10.1039/c9tb00681h] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Biofilm formation can lead to the treatment failure of persistent bacterial infections. Although a variety of antibacterial agents have been developed, the restricted drug penetration and the embedded bacteria's potentiated recalcitrance to these agents synergistically lead to the unsatisfactory anti-biofilm effect. Herein, we report the applications of metal-free quaternized carbon dots (CDs) in imaging and eliminating bacterial biofilms. The CDs prepared by the solvothermal treatment of dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (abbreviated as Si-QAC) and glycerol possess ultrasmall size (ca. 3.3 ± 0.4 nm) and strong positively charged (zeta potential: ca. +33.1 ± 2.5 mV) surfaces with long alkyl chain-linked quaternary ammonium groups. The small size of the CDs endows them with the penetration ability into the interior of Gram-negative and Gram-positive bacterial biofilms, which enables excellent fluorescence imaging of the biofilms. Due to the different surfaces of the two types of bacteria, the positively charged CDs selectively interact with the more negatively charged Gram-positive bacteria via electrostatic and hydrophobic interactions, which inactivates the Gram-positive bacteria and ultimately eradicates the Gram-positive bacterial biofilms. In addition, we synthesize a new type of quaternized CDs without long alkyl chains (termed TTPAC CDs), and validate that the long alkyl chains potentiate the hydrophobic adhesion between CDs and Gram-positive bacteria. Meanwhile, the crystal violet staining results reveal that the cationic CDs inhibit the formation of Gram-positive bacterial biofilms. Collectively, our work highlights the feasibility of using cationic and ultrasmall metal-free CDs to eliminate and inhibit Gram-positive bacterial biofilms, which represents a highly effective strategy to cope with refractory biofilm-associated infections.
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Affiliation(s)
- Huan-Huan Ran
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Xiaotong Cheng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Yan-Wen Bao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Xian-Wu Hua
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Ge Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Xiaodong Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Yao-Wen Jiang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Ya-Xuan Zhu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China.
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68
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Pircalabioru GG, Chifiriuc MC. Nanoparticulate drug-delivery systems for fighting microbial biofilms: from bench to bedside. Future Microbiol 2020; 15:679-698. [PMID: 32495694 DOI: 10.2217/fmb-2019-0251] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Biofilms are highly tolerant to antimicrobial agents and adverse environmental conditions being important reservoirs for chronic and hard-to-treat infections. Nanomaterials exhibit microbiostatic/microbicidal/antipathogenic properties and can be also used for the delivery of antibiofilm agents. However, few of the many promising leads offered by nanotechnology reach clinical studies and eventually, become available to clinicians. The aim of this paper was to review the progress and challenges in the development of nanotechnology-based antibiofilm drug-delivery systems. The main identified challenges are: most papers report only in vitro studies of the activity of different nanoformulations; lack of standardization in the methodological approaches; insufficient collaboration between material science specialists and clinicians; paucity of in vivo studies to test efficiency and safety.
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Affiliation(s)
- Gratiela G Pircalabioru
- University of Bucharest, Faculty of Biology, Research Institute of The University of Bucharest (ICUB), Bucharest, Romania
| | - Mariana-Carmen Chifiriuc
- University of Bucharest, Faculty of Biology, Research Institute of The University of Bucharest (ICUB), Bucharest, Romania
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69
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Li J, Zhong W, Zhang K, Wang D, Hu J, Chan-Park MB. Biguanide-Derived Polymeric Nanoparticles Kill MRSA Biofilm and Suppress Infection In Vivo. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21231-21241. [PMID: 31934739 DOI: 10.1021/acsami.9b17747] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a significant cause of drug-resistant infections. Its propensity to develop biofilms makes it especially resistant to conventional antibiotics. We present a novel nanoparticle (NP) system made from biocompatible F-127 surfactant, tannic acid (TA), and biguanide-based polymetformin (PMET) (termed FTP NPs), which can kill MRSA biofilm bacteria effectively in vitro and in vivo and which has excellent biocompatibility. FTP NPs exhibit biofilm bactericidal activity-ability to kill bacteria both inside and outside biofilm-significantly better than many antimicrobial peptides or polymers. At low concentrations (8-32 μg/mL) in vitro, FTP NPs outperformed PMET with ∼100-fold (∼2 log10) greater reduction of MRSA USA300 biofilm bacterial cell counts, which we attribute to the antifouling property of the hydrophilic poly(ethylene glycol) contributed by F-127. Further, in an in vivo murine excisional wound model, FTP NPs achieved 1.8 log10 reduction of biofilm-associated MRSA USA300 bacteria, which significantly outperformed vancomycin (0.8 log10 reduction). Moreover, in vitro cytotoxicity tests showed that FTP NPs have less toxicity than PMET toward mammalian cells, and in vivo intravenous injection of FTP NPs at 10 mg/kg showed no acute toxicity to mice with negligible body weight loss and no significant perturbation of blood biomarkers. These biguanide-based FTP NPs are a promising approach to therapy of MRSA infections.
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Affiliation(s)
- Jianghua Li
- Centre for Antimicrobial Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459 Singapore
| | - Wenbin Zhong
- Centre for Antimicrobial Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459 Singapore
| | - Kaixi Zhang
- Centre for Antimicrobial Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459 Singapore
| | - Dongwei Wang
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315000, China
| | - Jingbo Hu
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315000, China
| | - Mary B Chan-Park
- Centre for Antimicrobial Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, 637459 Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, 636921 Singapore
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70
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Wu Y, van der Mei HC, Busscher HJ, Ren Y. Enhanced bacterial killing by vancomycin in staphylococcal biofilms disrupted by novel, DMMA-modified carbon dots depends on EPS production. Colloids Surf B Biointerfaces 2020; 193:111114. [PMID: 32464355 DOI: 10.1016/j.colsurfb.2020.111114] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 12/12/2022]
Abstract
Alternatives for less and less effective antibiotic treatment of bacterial infections, are amongst others based on nanotechnological innovations, like carbon-dots. However, with a focus on chemistry, important characteristics of bacterial strains, like (in-)ability to produce extracellular-polymeric-substances (EPS) are often neglected. EPS is the glue that certain bacterial strains produce to keep a biofilm together. Here we report on synthesis of novel, pH-responsive, 2,3-dimethylmaleic-anhydride modified carbon-dots (CDMMA-dots). CDMMA-dots, like unmodified C-dots without DMMA, were little bactericidal. However, CDMMA-dots reduced volumetric-bacterial-density within the acidic-environment of a biofilm for a non-EPS-producing Staphylococcus epidermidis strain, indicative for a more open structure. Such a structural disruption was not observed for an EPS-producing strain. Disrupted biofilms of the non-EPS-producing strain pre-exposed to CDMMA-dots at pH 5.0, were more amenable to vancomycin penetration and killing of their inhabitants than biofilms of EPS-producing-staphylococci. Herewith, we describe a new role of carbon-dots as synthetic disruptants of biofilm structure. It is a partial success story, identifying the challenge of making carbon-dots that act as a universal disruptant for biofilms of strains with different microbiological characteristics, most notably the ability to produce or not-produce EPS. Such carbon-dots, will enable more effective clinical treatment of bacterial infections combined with current antibiotics.
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Affiliation(s)
- Yanyan Wu
- University of Groningen and University Medical Center of Groningen Department of Orthodontics, Hanzeplein 1, 9700 RB Groningen, the Netherlands
| | - Henny C van der Mei
- University of Groningen and University Medical Center Groningen Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands.
| | - Henk J Busscher
- University of Groningen and University Medical Center Groningen Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands.
| | - Yijin Ren
- University of Groningen and University Medical Center of Groningen Department of Orthodontics, Hanzeplein 1, 9700 RB Groningen, the Netherlands
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71
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Wang J, Lu C, Shi Y, Feng X, Wu B, Zhou G, Quan G, Pan X, Cai J, Wu C. Structural Superiority of Guanidinium-Rich, Four-Armed Copolypeptides: Role of Multiple Peptide-Membrane Interactions in Enhancing Bacterial Membrane Perturbation and Permeability. ACS APPLIED MATERIALS & INTERFACES 2020; 12:18363-18374. [PMID: 32242658 DOI: 10.1021/acsami.0c02752] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of novel antimicrobials is a top priority to address the growing epidemic of multidrug-resistant pathogens. Since cationic nonamphiphilic star-shaped antimicrobials are promising molecular scaffolds that provide a high charge density in binding anionic bacterial bilayers, this research aimed to further increase their membrane perturbation capability by introducing guanidinium groups to the antimicrobials via enhancing membrane insertion. In particular, computational simulation and experimental investigations revealed that our designed guanidinium-rich alternating copolypeptide, four-armed poly(arginine-alt-glycine), can interact with both the headgroups and unsaturated tails of phospholipids in bacterial membranes through multiple interactions, including electrostatic, cation-π, and T-shaped π-π interactions, allowing it to penetrate deeper inside the biologically inaccessible high-energy barrier of the hydrophobic lipid bilayer interior to cause membrane permeabilization and precipitation of the bacterial cytoplasm. Furthermore, glycine was observed to have a unique effect in enhancing the performance of arginine-based copolypeptide. Four-armed poly(arginine-alt-glycine) exhibited broad-spectrum antimicrobial activity, high bactericidal efficiency, and negligible hemolysis. The in vivo antibacterial performance of the copolypeptide was superior to that of doxycycline in a mouse model of Pseudomonas aeruginosa skin infection, accompanied by negligible local and systemic toxicity. Our results demonstrate that this guanidinium-rich, nonamphiphilic, star-shaped structure may promote the development of next-generation antimicrobials.
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Affiliation(s)
- Jing Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Yin Shi
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiaoqian Feng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Biyuan Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Guilin Zhou
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Chuanbin Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
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72
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Barros CHN, Devlin H, Hiebner DW, Vitale S, Quinn L, Casey E. Enhancing curcumin's solubility and antibiofilm activity via silica surface modification. NANOSCALE ADVANCES 2020; 2:1694-1708. [PMID: 36132306 PMCID: PMC9418611 DOI: 10.1039/d0na00041h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/19/2020] [Indexed: 06/15/2023]
Abstract
Bacterial biofilms are microbial communities in which bacterial cells in sessile state are mechanically and chemically protected against foreign agents, thus enhancing antibiotic resistance. The delivery of active compounds to the inside of biofilms is often hindered due to the existence of the biofilm extracellular polymeric substances (EPS) and to the poor solubility of drugs and antibiotics. A possible strategy to overcome the EPS barrier is the incorporation of antimicrobial agents into a nanocarrier, able to penetrate the matrix and deliver the active substance to the cells. Here, we report the synthesis of antimicrobial curcumin-conjugated silica nanoparticles (curc-NPs) as a possibility for dealing with these issues. Curcumin is a known antimicrobial agent and to overcome its low solubility in water it was grafted onto the surface of silica nanoparticles, the latter functioning as nanocarrier for curcumin into the biofilm. Curc-NPs were able to impede the formation of model P. putida biofilms up to 50% and disrupt mature biofilms up to 54% at 2.5 mg mL-1. Cell viability of sessile cells in both cases was also considerably affected, which is not observed for curcumin delivered as a free compound at the same concentration. Furthermore, proteomics of extracted EPS matrix of biofilms grown in the presence of free curcumin and curc-NPs revealed differences in the expression of key proteins related to cell detoxification and energy production. Therefore, curc-NPs are presented here as an alternative for curcumin delivery that can be exploited not only to other bacterial strains but also to further biological applications.
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Affiliation(s)
- Caio H N Barros
- School of Chemical and Bioprocess Engineering, University College Dublin Ireland
| | - Henry Devlin
- School of Chemical and Bioprocess Engineering, University College Dublin Ireland
| | - Dishon W Hiebner
- School of Chemical and Bioprocess Engineering, University College Dublin Ireland
| | - Stefania Vitale
- School of Chemical and Bioprocess Engineering, University College Dublin Ireland
| | - Laura Quinn
- School of Chemical and Bioprocess Engineering, University College Dublin Ireland
| | - Eoin Casey
- School of Chemical and Bioprocess Engineering, University College Dublin Ireland
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73
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Wang C, Chen P, Qiao Y, Kang Y, Yan C, Yu Z, Wang J, He X, Wu H. pH responsive superporogen combined with PDT based on poly Ce6 ionic liquid grafted on SiO 2 for combating MRSA biofilm infection. Theranostics 2020; 10:4795-4808. [PMID: 32308750 PMCID: PMC7163436 DOI: 10.7150/thno.42922] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 03/05/2020] [Indexed: 02/07/2023] Open
Abstract
Background: Biofilm infection caused by multidrug-resistant bacteria is difficult to eradicate by conventional therapies. Photodynamic therapy (PDT) is an effective antibacterial method for fighting against biofilm infection. However, the blocked photosensitizers outside of biofilm greatly limit the efficacy of PDT. Methods: Herein, a novel acid-responsive superporogen and photosensitizer (SiO2-PCe6-IL) was developed. Because of the protonation of the photosensitizer and the high binding energy of the polyionic liquid, SiO2-PCe6-IL changed to positive SiO2-PIL+ in an acidic microenvironment of biofilm infection. SiO2-PIL+ could combine with negatively charged extracellular polymeric substances (EPS) and create holes to remove the biofilm barrier. To strengthen the interaction between SiO2-PIL+ and EPS, SiO2-PIL+ of high charge density was prepared by grafting the high-density initiation site of ATRP onto the surface of the SiO2 base. Results: Due to the rapid protonation rate of COO- and the strong binding energy of SiO2-PIL+ with EPS, SiO2-PCe6-IL could release 90% of Ce6 in 10 s. With the stronger electrostatic and hydrophobic interaction of SiO2-PIL+ with EPS, the surface potential, hydrophobicity, adhesion and mechanical strength of biofilm were changed, and holes in the biofilm were created in 10 min. Combining with the release of photosensitizers and the porous structure of the biofilm, Ce6 was efficiently concentrated in the biofilm. The in vitro and in vivo antibacterial experiments proved that SiO2-PCe6-IL dramatically improved the PDT efficacy against MRSA biofilm infection. Conclusion: These findings suggest that SiO2-PCe6-IL could rapidly increase the concentration of photosensitizer in biofilm and it is an effective therapy for combating biofilm infection.
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Yang Y, Wu X, He C, Huang J, Yin S, Zhou M, Ma L, Zhao W, Qiu L, Cheng C, Zhao C. Metal–Organic Framework/Ag-Based Hybrid Nanoagents for Rapid and Synergistic Bacterial Eradication. ACS APPLIED MATERIALS & INTERFACES 2020; 12:13698-13708. [PMID: 32129070 DOI: 10.1021/acsami.0c01666] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ye Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xizheng Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Chao He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jianbo Huang
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Shiqi Yin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Mi Zhou
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Lang Ma
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Li Qiu
- Laboratory of Ultrasound Imaging Drug, Department of Ultrasound, West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, China
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Falciani C, Zevolini F, Brunetti J, Riolo G, Gracia R, Marradi M, Loinaz I, Ziemann C, Cossío U, Llop J, Bracci L, Pini A. Antimicrobial Peptide-Loaded Nanoparticles as Inhalation Therapy for Pseudomonas aeruginosa Infections. Int J Nanomedicine 2020; 15:1117-1128. [PMID: 32110011 PMCID: PMC7034994 DOI: 10.2147/ijn.s218966] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 01/27/2020] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION Antibiotic-resistant bacteria kill 25,000 people every year in the EU. Patients subject to recurrent lung infections are the most vulnerable to severe or even lethal infections. For these patients, pulmonary delivery of antibiotics would be advantageous, since inhalation can achieve higher concentration in the lungs than iv administration and can provide a faster onset of action. This would allow for the delivery of higher doses and hence reduce the number of treatments required. We report here about a new nanosystem (M33-NS) obtained by capturing SET-M33 peptide on single-chain dextran nanoparticles. SET-M33 is a non-natural antimicrobial peptide synthesized in branched form. This form gives the peptide resistance to degradation in biological fluids. SET-M33 has previously shown efficacy in vitro against about one hundred of Gram-negative multidrug and extensively drug-resistant clinical isolates and was also active in preclinical infection models of pneumonia, sepsis and skin infections. METHODS The new nanosystem was evaluated for its efficacy in bacteria cells and in a mouse model of pneumonia. Toxicity and genotoxicity were also tested in vitro. Biodistribution and pharmacokinetic studies in healthy rats were carried out using a radiolabeled derivative of the nanosystem. RESULTS The M33-nanosystem, studied here, showed to be effective against Pseudomonas aeruginosa in time-kill kinetic experiments. Cytotoxicity towards different animal cell lines was acceptable. Lung residence time of the antimicrobial peptide, administered via aerosol in healthy rats, was markedly improved by capturing SET-M33 on dextran nanoparticles. M33-NS was also efficient in eradicating pulmonary infection in a BALB/c mouse model of pneumonia caused by P. aeruginosa. DISCUSSION This study revealed that the encapsulation of the antimicrobial peptide in dextran nanoparticles markedly improved lung residence time of the peptide administered via aerosol. The result has to be considered among the aims of the development of a new therapeutic option for patients suffering recurrent infections, that will benefit from high local doses of persistent antimicrobials.
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Affiliation(s)
- Chiara Falciani
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Fabrizia Zevolini
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Jlenia Brunetti
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | | | - Raquel Gracia
- CIDETEC, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain
| | - Marco Marradi
- CIDETEC, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain
| | - Iraida Loinaz
- CIDETEC, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain
| | - Christina Ziemann
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Hannover, Germany
| | - Unai Cossío
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastian, Spain
| | - Jordi Llop
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastian, Spain
- Centro de Investigación Biomédica en red Enfermedades Respiratorias – CIBERES, Madrid, Spain
| | - Luisa Bracci
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Alessandro Pini
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
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76
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Caceres M, Petit E, Deratani A. Partial depolymerization of hydroxypropylmethyl cellulose for production of low molar mass polymer chains. Carbohydr Polym 2020; 229:115461. [DOI: 10.1016/j.carbpol.2019.115461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/09/2019] [Accepted: 10/09/2019] [Indexed: 01/31/2023]
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77
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Li P, Liu S, Zhang G, Yang X, Cao W, Gong X, Xing X. Design of pH-Responsive Dissociable Nanosystem Based on Carbon Dots with Enhanced Anti-biofilm Property and Excellent Biocompatibility. ACS APPLIED BIO MATERIALS 2020; 3:1105-1115. [DOI: 10.1021/acsabm.9b01053] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Peili Li
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Shuai Liu
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Gaoke Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xu Yang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Weiwei Cao
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xuedong Gong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiaodong Xing
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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78
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Zhang L, Wang Y, Wang C, He M, Wan J, Wei Y, Zhang J, Yang X, Zhao Y, Zhang Y. Light-Activable On-Demand Release of Nano-Antibiotic Platforms for Precise Synergy of Thermochemotherapy on Periodontitis. ACS APPLIED MATERIALS & INTERFACES 2020; 12:3354-3362. [PMID: 31872756 DOI: 10.1021/acsami.9b17335] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The overprescription and improper use of antibiotics have contributed to the evolution of bacterial resistance, making it urgent to develop alternative therapies and agents with better efficacy as well as less toxicity to combat bacterial infections and keep new resistance from developing. In this work, a novel light-activable nano-antibiotic platform (TC-PCM@GNC-PND) was constructed by the incorporation of gold nanocages (GNC) and two thermosensitive gatekeepers, phase-change materials (PCM) and thermosensitive polymer poly(N-isopropylacrylamide-co-diethylaminoethyl methacrylate) (PND), to realize precisely the synergy of photothermal and antimicrobial drugs. GNC exhibits an excellent photothermal effect owing to its strong absorbance in the near-infrared (NIR) region, and hollow interiors make it a favorable vehicle for loading various antibiotics such as tetracycline (TC). The release of the encapsulated drugs could be precisely controlled by NIR light through the dual thermosensitive interaction of liquid-solid transition of PCM and coil-granule transition of PND, improving efficacy and alleviating side effects with on-demand drug release. The thermosensitive hydrogel was formed in situ upon application with body temperature, enhancing retention of the antimicrobial agent in local infectious sites. Highly effective ablation of bacteria is achieved both in vitro and in periodontitis models with little toxicity owing to the synergy of photothermal effects and chemotherapeutic drug release induced by NIR. This study could provide guidance for the design of antibacterial materials and shed substantial light on synergistic treatment.
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Affiliation(s)
- Lingling Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , China
- Medical Research Institute, School of Medicine , Wuhan University , Wuhan 430071 , China
| | - Yulan Wang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , China
- Medical Research Institute, School of Medicine , Wuhan University , Wuhan 430071 , China
| | - Can Wang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , China
- Medical Research Institute, School of Medicine , Wuhan University , Wuhan 430071 , China
| | - Ming He
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Jiangshan Wan
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Yan Wei
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , China
- Medical Research Institute, School of Medicine , Wuhan University , Wuhan 430071 , China
| | - Jinglun Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , China
- Medical Research Institute, School of Medicine , Wuhan University , Wuhan 430071 , China
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Yanbing Zhao
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Yufeng Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology , Wuhan University , Wuhan 430079 , China
- Medical Research Institute, School of Medicine , Wuhan University , Wuhan 430071 , China
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79
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Tao G, Ji T, Wang N, Yang G, Lei X, Zheng W, Liu R, Xu X, Yang L, Yin GQ, Liao X, Li X, Ding HM, Ding X, Xu J, Yang HB, Chen G. Self-Assembled Saccharide-Functionalized Amphiphilic Metallacycles as Biofilms Inhibitor via "Sweet Talking". ACS Macro Lett 2020; 9:61-69. [PMID: 35638656 DOI: 10.1021/acsmacrolett.9b00914] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bacterial biofilms are troublesome in the treatment of bacterial infectious diseases due to their inherent resistance to antibiotic therapy. Exploration of alternative antibiofilm reagents provides opportunities to achieve highly effective treatments. Herein, we propose a strategy to employ self-assembled saccharide-functionalized amphiphilic metallacycles ([2+2]-Gal, [3+3]-Gal, and [6+6]-Gal) with multiple positive charges as a different type of antibacterial reagent, marrying saccharide functionalization that interact with bacteria via "sweet talking". These self-assembled glyco-metallacycles gave various nanostructures (nanoparticles, vesicles or micron-sized vesicles) with different biofilms inhibition effect on Staphylococcus aureus (S. aureus). Especially, the peculiar self-assembly mechanism, superior antibacterial effect and biofilms inhibition distinguished the [6+6]-Gal from other metallacycles. Meanwhile, in vivo S. aureus pneumonia animal model experiments suggested that [6+6]-Gal could relieve mice pneumonia aroused by S. aureus effectively. In addition, the control study of metallacycle [3+3]-EG5 confirmed the significant role of galactoside both in the self-assembly process and the antibacterial efficacy. In view of the superior effect against bacteria, the saccharide-functionalized metallacycle could be a promising candidate as biofilms inhibitor or treatment agent for pneumonia.
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Affiliation(s)
- Guoqing Tao
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Tan Ji
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes and School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Ning Wang
- Shanghai Pulmonary Hospital and School of Medicine, Tongji University, Shanghai 200433, China
| | - Guang Yang
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Xiaolai Lei
- School of Life Sciences, Fudan University, Shanghai 200433, China
| | - Wei Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes and School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Rongying Liu
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Xuyang Xu
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Ling Yang
- Shanghai Pulmonary Hospital and School of Medicine, Tongji University, Shanghai 200433, China
| | - Guang-Qiang Yin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes and School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xiaojuan Liao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Hong-ming Ding
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
| | - Xiaoming Ding
- School of Life Sciences, Fudan University, Shanghai 200433, China
| | - Jinfu Xu
- Shanghai Pulmonary Hospital and School of Medicine, Tongji University, Shanghai 200433, China
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes and School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Guosong Chen
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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80
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Qiao Z, Yao Y, Song S, Yin M, Yang M, Yan D, Yang L, Luo J. Gold nanorods with surface charge-switchable activities for enhanced photothermal killing of bacteria and eradication of biofilm. J Mater Chem B 2020; 8:3138-3149. [DOI: 10.1039/d0tb00298d] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The gold nanorods (PCB-AuNRs) with pH induced surface charge transform activities were used for photothermal disinfection of planktonic bacteria and eradication of bacterial biofilms.
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Affiliation(s)
- Zhuangzhuang Qiao
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Yan Yao
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Shaomin Song
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Meihui Yin
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Min Yang
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Daoping Yan
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Lijiao Yang
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Jianbin Luo
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
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81
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Xi Y, Wang Y, Gao J, Xiao Y, Du J. Dual Corona Vesicles with Intrinsic Antibacterial and Enhanced Antibiotic Delivery Capabilities for Effective Treatment of Biofilm-Induced Periodontitis. ACS NANO 2019; 13:13645-13657. [PMID: 31585041 DOI: 10.1021/acsnano.9b03237] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Periodontitis is a common disease caused by plaque biofilms, which are important pathogenic factors of many diseases and may be eradicated by antibiotic therapy. However, low-dose antibiotic therapy is a complicated challenge for eradicating biofilms as hundreds (even thousands) of times higher concentrations of antibiotics are needed than killing planktonic bacteria. Polymer vesicles may solve these problems via effective antibiotic delivery into biofilms, but traditional single corona vesicles lack the multifunctionalities essential for biofilm eradication. In this paper, we aim to effectively treat biofilm-induced periodontitis using much lower concentrations of antibiotics than traditional antibiotic therapy by designing a multifunctional dual corona vesicle with intrinsic antibacterial and enhanced antibiotic delivery capabilities. This vesicle is co-assembled from two block copolymers, poly(ε-caprolactone)-block-poly(lysine-stat-phenylalanine) [PCL-b-P(Lys-stat-Phe)] and poly(ethylene oxide)-block-poly(ε-caprolactone) [PEO-b-PCL]. Both PEO and P(Lys-stat-Phe) coronas have their specific functions: PEO endows vesicles with protein repelling ability to penetrate extracellular polymeric substances in biofilms ("stealthy" coronas), whereas P(Lys-stat-Phe) provides vesicles with positive charges and broad spectrum intrinsic antibacterial activity. As a result, the dosage of antibiotics can be reduced by 50% when encapsulated in the dual corona vesicles to eradicate Escherichia coli or Staphylococcus aureus biofilms. Furthermore, effective in vivo treatment has been achieved from a rat periodontitis model, as confirmed by significantly reduced dental plaque, and alleviated inflammation. Overall, this "stealthy" and antibacterial dual corona vesicle demonstrates a fresh insight for improving the antibiofilm efficiency of antibiotics and combating the serious threat of biofilm-associated diseases.
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Affiliation(s)
- Yuejing Xi
- Department of Orthopedics, Shanghai Tenth People's Hospital , Tongji University School of Medicine , Shanghai 200072 , China
- Department of Polymeric Materials, School of Materials Science and Engineering , Tongji University , 4800 Caoan Road , Shanghai 201804 , China
| | - Yue Wang
- Department of Orthodontics, School and Hospital of Stomatology, Shanghai Engineering Research Center of Tooth Restoration and Regeneration , Tongji University , Shanghai 200072 , China
| | - Jingyi Gao
- Department of Polymeric Materials, School of Materials Science and Engineering , Tongji University , 4800 Caoan Road , Shanghai 201804 , China
| | - Yufen Xiao
- Department of Polymeric Materials, School of Materials Science and Engineering , Tongji University , 4800 Caoan Road , Shanghai 201804 , China
| | - Jianzhong Du
- Department of Orthopedics, Shanghai Tenth People's Hospital , Tongji University School of Medicine , Shanghai 200072 , China
- Department of Polymeric Materials, School of Materials Science and Engineering , Tongji University , 4800 Caoan Road , Shanghai 201804 , China
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82
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Al-Obaidi H, Kowalczyk RM, Kalgudi R, Zariwala MG. Griseofulvin solvate solid dispersions with synergistic effect against fungal biofilms. Colloids Surf B Biointerfaces 2019; 184:110540. [DOI: 10.1016/j.colsurfb.2019.110540] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/27/2019] [Accepted: 09/29/2019] [Indexed: 01/22/2023]
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83
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Bazan EL, Ruan L, Zhou C. Improving the antimicrobial efficacy against resistant Staphylococcus aureus by a combined use of conjugated oligoelectrolytes. PLoS One 2019; 14:e0224816. [PMID: 31730663 PMCID: PMC6857938 DOI: 10.1371/journal.pone.0224816] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 10/22/2019] [Indexed: 01/01/2023] Open
Abstract
Two membrane-intercalating conjugated oligoelectrolytes (COEs), namely COE-D8 and COE-S6, were combined to achieve enhanced antimicrobial efficacy. COE-D8 has a shorter molecular length than COE-S6 and is typical of effective antimicrobial COE molecules, presumably due to its prominent membrane disrupting function. In contrast, COE-D6 exhibits lower efficacy against bacteria and lower toxicity toward mammalian cells. Surprisingly, after supplementing 8 μM COE-S6, the minimum inhibitory concentration (MIC) of COE-D8 against methicillin-resistant Staphylococcus aureus (MRSA) was improved 8-fold, from 0.5 μM to 0.063 μM (0.050 μg mL-1). No increased toxicity toward mammalian cells was observed by the combination of COEs, as indicated by cytotoxicity measurements using the 3T3 cell line. Indeed, there is an extended ratio between the half maximal inhibitory concentration based on 3T3 cells to MIC against MRSA from 12 to greater than 256. Biophysical experiments using liposome models suggest that COE-S6 promotes the interactions between COE-D8 and lipid bilayers, which is in agreement with damages of cellular permeability and morphology, as observed by confocal microscopy and scanning electron microscopy. The application of a combined mixture of COEs further demonstrates their promising potential as a new class of antimicrobial agents with high efficacy and selectivity.
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Affiliation(s)
- Elias L. Bazan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Lin Ruan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Cheng Zhou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore
- * E-mail:
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84
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Spengler C, Nolle F, Mischo J, Faidt T, Grandthyll S, Thewes N, Koch M, Müller F, Bischoff M, Klatt MA, Jacobs K. Strength of bacterial adhesion on nanostructured surfaces quantified by substrate morphometry. NANOSCALE 2019; 11:19713-19722. [PMID: 31599281 DOI: 10.1039/c9nr04375f] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microbial adhesion and the subsequent formation of resilient biofilms at surfaces are decisively influenced by substrate properties, such as the topography. To date, studies that quantitatively link surface topography and bacterial adhesion are scarce, as both are not straightforward to quantify. To fill this gap, surface morphometry combined with single-cell force spectroscopy was performed on surfaces with irregular topographies on the nano-scale. As surfaces, hydrophobized silicon wafers were used that were etched to exhibit surface structures in the same size range as the bacterial cell wall molecules. The surface structures were characterized by a detailed morphometric analysis based on Minkowski functionals revealing both qualitatively similar features and quantitatively different extensions. We find that as the size of the nanostructures increases, the adhesion forces decrease in a way that can be quantified by the area of the surface that is available for the tethering of cell wall molecules. In addition, we observe a bactericidal effect, which is more pronounced on substrates with taller structures but does not influence adhesion. Our results can be used for a targeted development of 3D-structured materials for/against bio-adhesion. Moreover, the morphometric analysis can serve as a future gold standard for characterizing a broad spectrum of material structures.
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Affiliation(s)
- Christian Spengler
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
| | - Friederike Nolle
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
| | - Johannes Mischo
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
| | - Thomas Faidt
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
| | - Samuel Grandthyll
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
| | - Nicolas Thewes
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
| | - Marcus Koch
- INM - Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Frank Müller
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
| | - Markus Bischoff
- Institute of Medical Microbiology and Hygiene, Saarland University, 66421 Homburg/Saar, Germany
| | - Michael Andreas Klatt
- Institute of Stochastics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - Karin Jacobs
- Department of Experimental Physics, Saarland University, Campus E2 9, 66123 Saarbrücken, Germany.
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85
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Su L, Li Y, Liu Y, An Y, Shi L. Recent Advances and Future Prospects on Adaptive Biomaterials for Antimicrobial Applications. Macromol Biosci 2019; 19:e1900289. [PMID: 31642591 DOI: 10.1002/mabi.201900289] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/19/2019] [Indexed: 12/15/2022]
Abstract
Bacterial infection is becoming the biggest threat to human health. The scenario is partly due to the ineffectiveness of the conventional antibiotic treatments against the emergence of multidrug-resistant bacteria and partly due to the bacteria living in biofilms or cells. Adaptive biomaterials can change their physicochemical properties in the microenvironment of bacterial infection, thereby facilitating either their interactions with bacteria or drug release. The trends in treating bacterial infections using adaptive biomaterials-based systems are flourishing and generate innumerous possibility to design novel antimicrobial therapeutics. This feature article aims to summarize the recent developments in the formulations, mechanisms, and advances of adaptive materials in bacterial infection diagnosis, contact killing of bacteria, and antimicrobial drug delivery. Also, the challenges and limitations of current antimicrobial treatments based on adaptive materials and their clinical and industrial future prospects are discussed.
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Affiliation(s)
- Linzhu Su
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yuanfeng Li
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yong Liu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yingli An
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Linqi Shi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
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86
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Zhang K, Du Y, Si Z, Liu Y, Turvey ME, Raju C, Keogh D, Ruan L, Jothy SL, Reghu S, Marimuthu K, De PP, Ng OT, Mediavilla JR, Kreiswirth BN, Chi YR, Ren J, Tam KC, Liu XW, Duan H, Zhu Y, Mu Y, Hammond PT, Bazan GC, Pethe K, Chan-Park MB. Enantiomeric glycosylated cationic block co-beta-peptides eradicate Staphylococcus aureus biofilms and antibiotic-tolerant persisters. Nat Commun 2019; 10:4792. [PMID: 31636263 PMCID: PMC6803644 DOI: 10.1038/s41467-019-12702-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 09/19/2019] [Indexed: 12/11/2022] Open
Abstract
The treatment of bacterial infections is hindered by the presence of biofilms and metabolically inactive persisters. Here, we report the synthesis of an enantiomeric block co-beta-peptide, poly(amido-D-glucose)-block-poly(beta-L-lysine), with high yield and purity by one-shot one-pot anionic-ring opening (co)polymerization. The co-beta-peptide is bactericidal against methicillin-resistant Staphylococcus aureus (MRSA), including replicating, biofilm and persister bacterial cells, and also disperses biofilm biomass. It is active towards community-acquired and hospital-associated MRSA strains which are resistant to multiple drugs including vancomycin and daptomycin. Its antibacterial activity is superior to that of vancomycin in MRSA mouse and human ex vivo skin infection models, with no acute in vivo toxicity in repeated dosing in mice at above therapeutic levels. The copolymer displays bacteria-activated surfactant-like properties, resulting from contact with the bacterial envelope. Our results indicate that this class of non-toxic molecule, effective against different bacterial sub-populations, has promising potential for the treatment of S. aureus infections. The authors report the synthesis of an enantiomeric block co-beta-peptide that kills methicillin-resistant Staphylococcus aureus, including biofilm and persister bacterial cells, and disperses biofilms. The copolymer displays antibacterial activity in human ex vivo and mouse in vivo infection models without toxicity.
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Affiliation(s)
- Kaixi Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Yu Du
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, 350002, Fuzhou, China
| | - Zhangyong Si
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Yang Liu
- Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore
| | - Michelle E Turvey
- Infectious Disease Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology Centre, 1 Create Way, Singapore, 138602, Singapore
| | - Cheerlavancha Raju
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Damien Keogh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Lin Ruan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Subramanion L Jothy
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Sheethal Reghu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Kalisvar Marimuthu
- Department of Infectious Diseases, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore.,National Centre for Infectious Diseases, 16 Jalan Tan Tock Seng, Singapore, 308442, Singapore
| | - Partha Pratim De
- Department of Laboratory Medicine, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore
| | - Oon Tek Ng
- Department of Infectious Diseases, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore.,National Centre for Infectious Diseases, 16 Jalan Tan Tock Seng, Singapore, 308442, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
| | - José R Mediavilla
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ, 07110, USA
| | - Barry N Kreiswirth
- Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ, 07110, USA
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Jinghua Ren
- Cancer Center, Union Hospital, Huazhong University of Science & Technology, Wuhan, 430022, Hubei, China
| | - Kam C Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Ontario, N2L 3G1, Canada
| | - Xue-Wei Liu
- Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Hongwei Duan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Yabin Zhu
- Medical School of Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Yuguang Mu
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore
| | - Paula T Hammond
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Guillermo C Bazan
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA, 93106-9510, USA
| | - Kevin Pethe
- Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore. .,School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore. .,Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore.
| | - Mary B Chan-Park
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore. .,Centre for Antimicrobial Bioengineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore. .,Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore.
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87
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Zhang Y, Liu W, Li Y, Yang YW, Dong A, Li Y. 2D Graphdiyne Oxide Serves as a Superior New Generation of Antibacterial Agents. iScience 2019; 19:662-675. [PMID: 31472341 PMCID: PMC6728613 DOI: 10.1016/j.isci.2019.08.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 07/01/2019] [Accepted: 08/12/2019] [Indexed: 11/17/2022] Open
Abstract
Graphdiyne (GDY) as an emerging 2D carbon-network nanomaterial possesses many fascinating properties that lead to numerous exciting applications, but the use of GDY and its derivatives in the antibacterial field has not yet been discovered. In this study, we first report on the use and evaluation of GDY and graphdiyne oxide (GDYO) as antibacterial agents and propose the antibacterial mechanisms of GDY-based nanomaterials. GDYO has been synthesized via the surface oxidation of GDY, and the antibacterial activity of GDYO has been compared with that of GDY through a series of antibacterial tests. Surprisingly, surface oxidation endowed inert GDY with superior antibacterial capability against two representative bacterial models: Escherichia coli and Staphylococcus aureus. Antibacterial mechanism experiments disclose that the antibacterial function of GDYO is a result of reactive oxygen species-dependent oxidation stress when a dispersed GDYO suspension has a direct contact with bacteria especially under visible light irradiation.
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Affiliation(s)
- Yana Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Street, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education,Inner Mongolia University, 235 University West Street, Hohhot 010021, China
| | - Wenxin Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Street, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education,Inner Mongolia University, 235 University West Street, Hohhot 010021, China
| | - Yongjun Li
- Laboratory of Organic Solids and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, No. 2 North First Street, Zhongguancun, Beijing 100190, China.
| | - Ying-Wei Yang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China; California NanoSystems Institute and Department of Chemistry & Biochemistry, University of California, Los Angeles, CA 90095, USA.
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 University West Street, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education,Inner Mongolia University, 235 University West Street, Hohhot 010021, China.
| | - Yuliang Li
- Laboratory of Organic Solids and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, No. 2 North First Street, Zhongguancun, Beijing 100190, China
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88
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Chen L, Feng J, Yang D, Tian F, Ye X, Qian Q, Wei S, Zhou Y. Sequence isomerism-dependent self-assembly of glycopeptide mimetics with switchable antibiofilm properties. Chem Sci 2019; 10:8171-8178. [PMID: 31857883 PMCID: PMC6837002 DOI: 10.1039/c9sc00193j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 07/10/2019] [Indexed: 12/13/2022] Open
Abstract
In biological systems, diverse amino acid sequences and functional decorations endow proteins with specific functions. Functionally modified oligopeptides are attractive building blocks to assemble stimuli-responsive biomimetic superstructures for mimicking soft structures in nature and biomaterial applications. In this work, we selectively synthesized the structurally simplest isomeric tripeptides (i.e., Ala-Gly-Gly-OH, Gly-Ala-Gly-OH and Gly-Gly-Ala-OH) to demonstrate how the subtlest change in sequence isomerism influences the self-assembly of glycopeptides. To impart self-assembly capability and stimuli-responsiveness, the isomeric tripeptides were modified with a hydrophobic n-butylazobenzene tail at the N-terminal. We observed three different self-assembled 1-D morphologies (i.e., nanotwists, nanoribbons and nanofibers) from the azobenzene-glycopeptides (AGPs) under the same conditions when the position of the Ala residue was switched. Experimental methods including transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and circular dichroism (CD) spectroscopy were used to characterize the structural details of glycopeptide mimetic assemblies. Martini coarse-grained molecular dynamics (MD) simulations confirmed such structural observations and investigated the differences in assembly mechanisms. Furthermore, the glycopeptide mimetic assemblies showed a reversible disassembly-assembly process in response to temperature, light or host-guest chemistry, and can be used as switchable antibiofilm nanoagents.
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Affiliation(s)
- Limin Chen
- School of Ophthalmology and Optometry , Eye Hospital , School of Biomedical Engineering , Wenzhou Medical University , Wenzhou 325000 , P. R. China .
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province , Wenzhou Institute , University of Chinese Academy of Sciences , Wenzhou 325000 , P. R. China
| | - Jie Feng
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province , Wenzhou Institute , University of Chinese Academy of Sciences , Wenzhou 325000 , P. R. China
| | - Dan Yang
- School of Ophthalmology and Optometry , Eye Hospital , School of Biomedical Engineering , Wenzhou Medical University , Wenzhou 325000 , P. R. China .
| | - Falin Tian
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province , Wenzhou Institute , University of Chinese Academy of Sciences , Wenzhou 325000 , P. R. China
| | - Xiaomin Ye
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province , Wenzhou Institute , University of Chinese Academy of Sciences , Wenzhou 325000 , P. R. China
| | - Qiuping Qian
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province , Wenzhou Institute , University of Chinese Academy of Sciences , Wenzhou 325000 , P. R. China
| | - Shuai Wei
- Department of Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , USA .
| | - Yunlong Zhou
- School of Ophthalmology and Optometry , Eye Hospital , School of Biomedical Engineering , Wenzhou Medical University , Wenzhou 325000 , P. R. China .
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province , Wenzhou Institute , University of Chinese Academy of Sciences , Wenzhou 325000 , P. R. China
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89
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Panja S, Bharti R, Dey G, Lynd NA, Chattopadhyay S. Coordination-Assisted Self-Assembled Polypeptide Nanogels to Selectively Combat Bacterial Infection. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33599-33611. [PMID: 31429277 DOI: 10.1021/acsami.9b10153] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In the present scenario, the invention of bacteria-selective antimicrobial agent comprising negligible toxicity and hemolytic effect is a great challenge. To surmount this challenge, here, a series of polypeptide nanogels (PNGs) have been fabricated by a coordination-assisted self-assembly of a mannose-conjugated antimicrobial polypeptide, poly(arginine-r-valine)-mannose (poly(Arg-r-Val)-M2), with Zn2+ ions. The fabricated PNGs are spherical in shape with a unique structural appearance similar to that of Taxus baccata fruits. PNGs, with a unique structural arrangement and threshold surface charge density, selectively interact with the bacterial membrane and exhibit potent antimicrobial activity, as reflected in their lower minimum inhibitory concentration values (varies from 2 to 16 μg/mL). PNGs show a remarkably high binding constant, 6.02 × 105 M-1 (from isothermal titration calorimetry, ITC), with the bacterial membrane which manifests its potent bactericidal effect. PNGs are nontoxic against mammalian and red blood cells as reflected from their higher cell viability and insignificant hemolytic effect. PNGs are taken up by the bacterial membrane and selectively undergo structural deformation (scrutinized by ITC) followed by an exposure of free poly(Arg-r-Val)-M2 molecules. The free poly(Arg-r-Val)-M2 molecules are enforced to lyse the bacterial membrane (visualized by cryo-transmission electron microscopy) followed by the diffusion of the cytoplasmic component out of the membrane which culminates in the final death of the bacterium.
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Affiliation(s)
- Sudipta Panja
- McKetta Department of Chemical Engineering, Center for Dynamics and Control of Materials , University of Texas at Austin , Austin , Texas 78712 , United States
| | | | | | - Nathaniel A Lynd
- McKetta Department of Chemical Engineering, Center for Dynamics and Control of Materials , University of Texas at Austin , Austin , Texas 78712 , United States
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90
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Chen X, Zhang X, Lin F, Guo Y, Wu FG. One-Step Synthesis of Epoxy Group-Terminated Organosilica Nanodots: A Versatile Nanoplatform for Imaging and Eliminating Multidrug-Resistant Bacteria and Their Biofilms. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901647. [PMID: 31353824 DOI: 10.1002/smll.201901647] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 06/21/2019] [Indexed: 06/10/2023]
Abstract
Multidrug-resistant bacteria (MRB) and their biofilms, both of which develop high levels of drug tolerance, cause severe threats to global health. This study demonstrates that biocompatible fluorescent silicon-containing nanodots can be a multifunctional platform for simultaneously imaging and eliminating MRB and their biofilms. Ultrasmall epoxy group (oxirane)-functionalized organosilica nanodots (OSiNDs) with a high photoluminescence quantum yield of ≈31% are synthesized via a simple one-step hydrothermal treatment of an epoxy group-containing silane molecule, 3-glycidoxypropyltrimethoxysilane, and an organic dye, rose bengal. The resultant OSiNDs can be employed as a universal imaging reagent for visualizing various bacteria/biofilms, including MRB and their biofilms. Moreover, the epoxy group-terminated OSiNDs can be conjugated with amine-containing reagents only via the simple stirring of the mixtures at an elevated temperature (e.g., 60 °C) for several hours (e.g., 3 h) without the addition of activating reagents. The amine-containing antibiotic vancomycin (Van) can thus be easily conjugated with the OSiNDs, and the obtained OSiNDs-Van can successfully inhibit the growth of MRB and even eliminate their biofilms. Collectively, the present work may give new impetus to the development of novel antibacterial and anti-biofilm agents for overcoming the drug resistance of bacteria.
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Affiliation(s)
- Xiaokai Chen
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Xiaodong Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Fengming Lin
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yuxin Guo
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
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91
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Li J, Liang S, Yan Y, Tian X, Li X. O-Mannosylation Affords a Glycopeptide Hydrogel with Inherent Antibacterial Activities against E. coli via Multivalent Interactions between Lectins and Supramolecular Assemblies. Macromol Biosci 2019; 19:e1900124. [PMID: 31310440 DOI: 10.1002/mabi.201900124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/18/2019] [Indexed: 12/12/2022]
Abstract
Multivalent carbohydrate-lectin interactions play a crucial role in bacterial infection. Biomimicry of multivalent glycosystems represents a major strategy in the repression of bacterial growth. In this study, a new kind of glycopeptide (Naphthyl-Phe-Phe-Ser-Tyr, NMY) scaffold with mannose modification is designed and synthesized, which is able to perform supramolecular self-assembly with the assistance of catalytic enzyme, and present multiple mannose ligands on its self-assembled structure to target mannose-binding proteins. Relying on multivalent carbohydrate-lectin interactions, the glycopeptide hydrogel is able to bind Escherichia coli (E. coli) in high specificity, and result in bacterial adhesion, membrane disruption and subsequent cell death. In vivo wound healing assays reveal that this glycopeptide hydrogel exhibits considerable potentials for promoting wound healing and preventing E. coli infection in a full-thickness skin defect mouse model. Therefore, through a specific mannose-lectin interaction, a biocompatible hydrogel with inherent antibacterial activity against E. coli is achieved without the need to resort to antibiotic or antimicrobial agent treatment, highlighting the potential role of sugar-coated nanomaterials in wound healing and control of bacterial pathogenesis.
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Affiliation(s)
- Jing Li
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Shufeng Liang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China.,Department of Molecular Biology, Shanxi Cancer Hospital and Institute, Affiliated Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030013, China
| | - Yufei Yan
- Shanghai Key Laboratory for Bone and Joint Diseases, Shanghai Institute of Orthopaedics and Traumatology, Shanghai Ruijin Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, 200025, China
| | - Xin Tian
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Xinming Li
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
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92
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Luan L, Chi Z, Liu C. Chinese White Wax Solid Lipid Nanoparticles as a Novel Nanocarrier of Curcumin for Inhibiting the Formation of Staphylococcus aureus Biofilms. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E763. [PMID: 31109013 PMCID: PMC6567159 DOI: 10.3390/nano9050763] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/30/2019] [Accepted: 05/09/2019] [Indexed: 12/28/2022]
Abstract
Chinese white wax solid lipid nanoparticles (cwSLNs) were prepared by high shear homogenization and ultrasound methods. Using an optimized formula, spherical cwSLNs with an average particle size of 401.9 ± 21.3 nm were obtained. The cwSLNs showed high entrapment efficiency, approximately 84.6%, for loading curcumin. The curcumin loaded cwSLNs (Cur-cwSLNs) exhibited sustained drug release properties. Notably, Cur-cwSLNs had a higher drug release rate at pH 4.5 than at pH 7.4, which suggested their applicability in an acidic environment. Cur-cwSLNs were able to inhibit the growth of Staphylococcus aureus and were more effective at reducing the biofilms produced by this bacterium compared to free curcumin. This study confirmed that cwSLNs may be novel carriers for increasing the bioavailability of curcumin with the potential to inhibit the formation of S. aureus biofilms.
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Affiliation(s)
- Lin Luan
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Zhe Chi
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Chenguang Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
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93
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Xing H, Lu M, Yang T, Liu H, Sun Y, Zhao X, Xu H, Yang L, Ding P. Structure-function relationships of nonviral gene vectors: Lessons from antimicrobial polymers. Acta Biomater 2019; 86:15-40. [PMID: 30590184 DOI: 10.1016/j.actbio.2018.12.041] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 11/22/2018] [Accepted: 12/21/2018] [Indexed: 01/13/2023]
Abstract
In recent years, substantial advances have been achieved in the design and synthesis of nonviral gene vectors. However, lack of effective and biocompatible vectors still remains a major challenge that hinders their application in clinical settings. In the past decade, there has been a rapid expansion of cationic antimicrobial polymers, due to their potent, rapid, and broad-spectrum biocidal activity against resistant microbes, and biocompatible features. Given that antimicrobial polymers share common features with nonviral gene vectors in various aspects, such as membrane affinity, functional groups, physicochemical characteristics, and unique macromolecular architectures, these polymers may provide us with inspirations to overcome challenges in the design of novel vectors toward more safe and efficient gene delivery in clinic. Building off these observations, we provide here an overview of the structure-function relationships of polymers for both antimicrobial applications and gene delivery by elaborating some key structural parameters, including functional groups, charge density, hydrophobic/hydrophilic balance, MW, and macromolecular architectures. By borrowing a leaf from antimicrobial agents, great advancement in the development of newer nonviral gene vectors with high transfection efficiency and biocompatibility will be more promising. STATEMENT OF SIGNIFICANCE: The development of gene delivery is still in the preclinical stage for the lack of effective and biocompatible vectors. Given that antimicrobial polymers share common features with gene vectors in various aspects, such as membrane affinity, functional groups, physicochemical characteristics, and unique macromolecular architectures, these polymers may provide us with inspirations to overcome challenges in the design of novel vectors toward more safe and efficient gene delivery in clinic. In this review, we systematically summarized the structure-function relationships of antimicrobial polymers and gene vectors, with which the design of more advanced nonviral gene vectors is anticipated to be further boosted in the future.
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Affiliation(s)
- Haonan Xing
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Mei Lu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Tianzhi Yang
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, Husson University, Bangor, ME, USA
| | - Hui Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Yanping Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Xiaoyun Zhao
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
| | - Hui Xu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Li Yang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China.
| | - Pingtian Ding
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China.
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94
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Liu F, He D, Yu Y, Cheng L, Zhang S. Quaternary Ammonium Salt-Based Cross-Linked Micelles to Combat Biofilm. Bioconjug Chem 2019; 30:541-546. [PMID: 30726061 DOI: 10.1021/acs.bioconjchem.9b00010] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Due to self-produced extracellular polymeric substances (EPS), biofilms are hard to eradicate by common antimicrobials. Herein, a new quaternary ammonium salt based cross-linked micelle (QAS@CM) was created to combat biofilms. The QAS@CM adsorbed first onto the biofilm surface through multicharged interaction, then penetrated the EPS in the form of nanoparticles and diffused throughout the films. By responding to the biofilm acid/lipase microenvironment, these nanoparticles would further break into quaternary ammonium oligomers and act as the polyvalent inhibitors to effectively destroy the established biofilm and kill the corresponding bacteria within it.
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Affiliation(s)
- Fangqin Liu
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
| | - Dengfeng He
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
| | - Yunlong Yu
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases , Sichuan University , Chengdu 610041 , China
| | - Shiyong Zhang
- National Engineering Research Center for Biomaterials, and College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , China
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95
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Qiao Z, Yao Y, Song S, Yin M, Luo J. Silver nanoparticles with pH induced surface charge switchable properties for antibacterial and antibiofilm applications. J Mater Chem B 2019; 7:830-840. [DOI: 10.1039/c8tb02917b] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Silver nanoparticles with pH induced surface charge transform activities were prepared which showed an enhanced antibacterial and antibiofilm efficiency while demonstrated reduced cytotoxicity to mammalian cells.
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Affiliation(s)
- Zhuangzhuang Qiao
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Yan Yao
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Shaomin Song
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Meihui Yin
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Jianbin Luo
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
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