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El Riz A, Tchoumi Neree A, Mousavifar L, Roy R, Chorfi Y, Mateescu MA. Metallo-Glycodendrimeric Materials against Enterotoxigenic Escherichia coli. Microorganisms 2024; 12:966. [PMID: 38792795 PMCID: PMC11124148 DOI: 10.3390/microorganisms12050966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/02/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
Conjugation of carbohydrates to nanomaterials has been extensively studied and recognized as an alternative in the biomedical field. Dendrimers synthesized with mannose at the end group and with entrapped zero-valent copper/silver could be a potential candidate against bacterial proliferation. This study is aimed at investigating the bactericidal activity of metal-glycodendrimers. The Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction was used to synthesize a new mannosylated dendrimer containing 12 mannopyranoside residues in the periphery. The enterotoxigenic Escherichia coli fimbriae 4 (ETEC:F4) viability, measured at 600 nm, showed the half-inhibitory concentration (IC50) of metal-free glycodendrimers (D), copper-loaded glycodendrimers (D:Cu) and silver-loaded glycodendrimers (D:Ag) closed to 4.5 × 101, 3.5 × 101 and to 1.0 × 10-2 µg/mL, respectively, and minimum inhibitory concentration (MIC) of D, D:Cu and D:Ag of 2.0, 1.5 and 1.0 × 10-4 µg/mL, respectively. The release of bacteria contents onto broth and the inhibition of ETEC:F4 biofilm formation increased with the number of metallo-glycodendrimer materials, with a special interest in silver-containing nanomaterial, which had the highest activity, suggesting that glycodendrimer-based materials interfered with bacteria-bacteria or bacteria-polystyrene interactions, with bacteria metabolism and can disrupt bacteria cell walls. Our findings identify metal-mannose-dendrimers as potent bactericidal agents and emphasize the effect of entrapped zero-valent metal against ETEC:F4.
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Affiliation(s)
- Aly El Riz
- Department of Chemistry, Université du Québec à Montréal, Succ. Centre-Ville, P.O. Box 8888, Montréal, QC H3C 3P8, Canada; (A.E.R.); (L.M.); (R.R.)
| | - Armelle Tchoumi Neree
- Department of Veterinary Biomedicine Sciences, Faculty of Veterinary Medicine, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada; (A.T.N.); (Y.C.)
- Centre de recherche en infectiologie porcine et avicole (CRIPA), Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
| | - Leila Mousavifar
- Department of Chemistry, Université du Québec à Montréal, Succ. Centre-Ville, P.O. Box 8888, Montréal, QC H3C 3P8, Canada; (A.E.R.); (L.M.); (R.R.)
| | - René Roy
- Department of Chemistry, Université du Québec à Montréal, Succ. Centre-Ville, P.O. Box 8888, Montréal, QC H3C 3P8, Canada; (A.E.R.); (L.M.); (R.R.)
| | - Younes Chorfi
- Department of Veterinary Biomedicine Sciences, Faculty of Veterinary Medicine, Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada; (A.T.N.); (Y.C.)
- Centre de recherche en infectiologie porcine et avicole (CRIPA), Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
| | - Mircea Alexandru Mateescu
- Department of Chemistry, Université du Québec à Montréal, Succ. Centre-Ville, P.O. Box 8888, Montréal, QC H3C 3P8, Canada; (A.E.R.); (L.M.); (R.R.)
- Centre de recherche en infectiologie porcine et avicole (CRIPA), Université de Montréal, St-Hyacinthe, QC J2S 2M2, Canada
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2
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Ji H, Yang X, Zhou H, Cui F, Zhou Q. Rapid Evaluation of Antibacterial Carbohydrates on a Microfluidic Chip Integrated with the Impedimetric Neoglycoprotein Biosensor. BIOSENSORS 2023; 13:887. [PMID: 37754121 PMCID: PMC10526297 DOI: 10.3390/bios13090887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/07/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023]
Abstract
The colonization of some bacteria to their host cell is mediated by selective adhesion between adhesin and glycan. The evaluation of antiadhesive carbohydrates in vitro has great significance in discovering new antibacterial drugs. In this paper, a microfluidic chip integrated with impedimetric neoglycoprotein biosensors was developed to evaluate the antibacterial effect of carbohydrates. Mannosylated bovine serum albumin (Man-BSA) was taken as the neoglycoprotein and immobilized on the microelectrode-modified gold nanoparticles (Au NPs) to form a bionic glycoprotein nanosensing surface (Man-BSA/Au NPs). Salmonella typhimurium (S. typhimurium) was selected as a bacteria model owing to its selective adhesion to the mannose. Electrochemical impedance spectroscopy (EIS) was used to characterize the adhesion capacity of S. typhimurium to the Man-BSA/Au NPs and evaluate the antiadhesive efficacy of nine different carbohydrates. It was illustrated that the 4-methoxyphenyl-α-D-pyran mannoside (Phenyl-Man) and mannan peptide (Mannatide) showed excellent antiadhesive efficacy, with IC50 values of 0.086 mM and 0.094 mM, respectively. The microfluidic device developed in this study can be tested in multiple channels. Compared with traditional methods for evaluating the antibacterial drug in vitro, it has the advantages of being fast, convenient, and cost-effective.
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Affiliation(s)
| | | | | | - Feiyun Cui
- The Ministry of Education Key Laboratory of Clinical Diagnostics, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China; (H.J.); (X.Y.); (H.Z.)
| | - Qin Zhou
- The Ministry of Education Key Laboratory of Clinical Diagnostics, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, China; (H.J.); (X.Y.); (H.Z.)
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3
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Wang W, Chen Y, Ye H, Dong Z, Zhang C, Feng D, Cao Q, Liang S, Zuo J. N-acyl homoserine lactonase attenuates the virulence of Salmonella typhimurium and its induction of intestinal damages in broilers. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2023; 14:334-342. [PMID: 37635927 PMCID: PMC10448016 DOI: 10.1016/j.aninu.2023.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/08/2023] [Accepted: 04/05/2023] [Indexed: 08/29/2023]
Abstract
This study aimed to investigate the potential mitigating effects of N-acyl homoserine lactonase (AHLase) on the virulence of Salmonella typhimurium and its induction of intestinal damages in broilers. In vitro study was firstly conducted to examine if AHLase treatment could attenuate the virulence of S. typhimurium. Then, an in vivo experiment was performed by allocating 240 broiler chicks at 1 d old into 3 groups (8 replicates per group): negative control (NC), positive control (PC), and PC supplemented with 10,000 U/kg AHLase. All chicks except those in NC were orally challenged by S. typhimurium from 8 to 10 d of age. Parameters were measured on d 11 and 21. The results showed that treatment with 1 U/mL AHLase suppressed the biofilm-forming ability (including biofilm biomass, extracellular DNA secretion and biofilm formation-related gene expression), together with swarming motility and adhesive capacity of S. typhimurium. Supplemental 10,000 U/kg AHLase counteracted S. typhimurium-induced impairments (P < 0.05) in broiler growth performance (including final body weight, average daily gain and average daily feed intake) during either 1-11 d or 12-21 d, and increases (P < 0.05) in the indexes of liver, spleen and bursa of Fabricius on d 11, together with reductions (P < 0.05) in ileal villus height and its ratio to crypt depth on both d 11 and 21. AHLase addition also normalized the increased (P < 0.05) mRNA expression of ileal occludin on both d 11 and 21 in S. typhimurium-challenged broilers. However, neither S. typhimurium challenge nor AHLase addition altered (P > 0.05) serum diamine oxidase activity of broilers. Noticeably, S. typhimurium challenge caused little change in the mRNA expression of ileal inflammatory cytokines except for an increase (P < 0.05) in interleukin-8 expression on d 11, whereas AHLase addition normalized (P < 0.05) this change. In conclusion, AHLase treatment could attenuate the virulence and pathogenicity of S. typhimurium, thus contributing to alleviate S. typhimurium-induced growth retardation and intestinal damages in broilers.
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Affiliation(s)
| | | | - Hui Ye
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Zemin Dong
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Changming Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Dingyuan Feng
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Qingyun Cao
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Shujie Liang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Jianjun Zuo
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
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4
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Xie X, Li Y, Lian S, Lu Y, Jia L. Cancer metastasis chemoprevention prevents circulating tumour cells from germination. Signal Transduct Target Ther 2022; 7:341. [PMID: 36184654 PMCID: PMC9526788 DOI: 10.1038/s41392-022-01174-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 04/19/2022] [Accepted: 08/31/2022] [Indexed: 11/09/2022] Open
Abstract
The war against cancer traces back to the signature event half-a-century ago when the US National Cancer Act was signed into law. The cancer crusade costs trillions with disappointing returns, teasing the possibility of a new breakthrough. Cure for cancer post-metastases still seems tantalisingly out of reach. Once metastasized, cancer-related death is extremely difficult, if not impossible, to be reversed. Here we present cancer pre-metastasis chemoprevention strategy that can prevent circulating tumour cells (CTCs) from initiating metastases safely and effectively, and is disparate from the traditional cancer chemotherapy and cancer chemoprevention. Deep learning of the biology of CTCs and their disseminating organotropism, complexity of their adhesion to endothelial niche reveals that if the adhesion of CTCs to their metastasis niche (the first and the most important part in cancer metastatic cascade) can be pharmaceutically interrupted, the lethal metastatic cascade could be prevented from getting initiated. We analyse the key inflammatory and adhesive factors contributing to CTC adhesion/germination, provide pharmacological fundamentals for abortifacients to intervene CTC adhesion to the distant metastasis sites. The adhesion/inhibition ratio (AIR) is defined for selecting the best cancer metastasis chemopreventive candidates. The successful development of such new therapeutic modalities for cancer metastasis chemoprevention has great potential to revolutionise the current ineffective post-metastasis treatments.
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Affiliation(s)
- Xiaodong Xie
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China
| | - Yumei Li
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Shu Lian
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China
| | - Yusheng Lu
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China
| | - Lee Jia
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian, 350108, China. .,Cancer Metastasis Alert and Prevention Center, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Fuzhou, Fujian, 350116, China.
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5
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Baker AN, Hawker-Bond GW, Georgiou PG, Dedola S, Field RA, Gibson MI. Glycosylated gold nanoparticles in point of care diagnostics: from aggregation to lateral flow. Chem Soc Rev 2022; 51:7238-7259. [PMID: 35894819 PMCID: PMC9377422 DOI: 10.1039/d2cs00267a] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Current point-of-care lateral flow immunoassays, such as the home pregnancy test, rely on proteins as detection units (e.g. antibodies) to sense for analytes. Glycans play a fundamental role in biological signalling and recognition events such as pathogen adhesion and hence they are promising future alternatives to antibody-based biosensing and diagnostics. Here we introduce the potential of glycans coupled to gold nanoparticles as recognition agents for lateral flow diagnostics. We first introduce the concept of lateral flow, including a case study of lateral flow use in the field compared to other diagnostic tools. We then introduce glycosylated materials, the affinity gains achieved by the cluster glycoside effect and the current use of these in aggregation based assays. Finally, the potential role of glycans in lateral flow are explained, and examples of their successful use given. Antibody-based lateral flow (immune) assays are well established, but here the emerging concept and potential of using glycans as the detection agents is reviewed.![]()
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Affiliation(s)
- Alexander N Baker
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
| | - George W Hawker-Bond
- Oxford University Clinical Academic Graduate School, John Radcliffe Hospital Oxford, Oxford, OX3 9DU, UK
| | - Panagiotis G Georgiou
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK.
| | | | - Robert A Field
- Iceni Glycoscience Ltd, Norwich, NR4 7GJ, UK.,Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK
| | - Matthew I Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK. .,Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK
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6
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Cobo I, Matheu MI, Castillón S, Davis BG, Boutureira O. Probing Site-Selective Conjugation Chemistries for the Construction of Homogeneous Synthetic Glycodendriproteins. Chembiochem 2022; 23:e202200020. [PMID: 35322922 PMCID: PMC9322419 DOI: 10.1002/cbic.202200020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/14/2022] [Indexed: 11/22/2022]
Abstract
Methods that site‐selectively attach multivalent carbohydrate moieties to proteins can be used to generate homogeneous glycodendriproteins as synthetic functional mimics of glycoproteins. Here, we study aspects of the scope and limitations of some common bioconjugation techniques that can give access to well‐defined glycodendriproteins. A diverse reactive platform was designed via use of thiol‐Michael‐type additions, thiol‐ene reactions, and Cu(I)‐mediated azide‐alkyne cycloadditions from recombinant proteins containing the non‐canonical amino acids dehydroalanine, homoallylglycine, homopropargylglycine, and azidohomoalanine.
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Affiliation(s)
- Isidro Cobo
- Universitat Rovira i Virgili, departament de quimica analitica i quimica organica, SPAIN
| | - M Isabel Matheu
- Universitat Rovira i Virgili, departament de quimica analitica i quimica organica, SPAIN
| | - Sergio Castillón
- Universitat Rovira i Virgili, departament de quimica analitica i quimica organica, SPAIN
| | | | - Omar Boutureira
- Universitat Rovira i Virgili, Departament de Quimica Analitica i Qu�mica Org�nica, Departament de Qu�mica Anal, C/ Marcel.li Domingo 1, 43007, Tarragona, SPAIN
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7
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Hoyos P, Perona A, Juanes O, Rumbero Á, Hernáiz MJ. Synthesis of Glycodendrimers with Antiviral and Antibacterial Activity. Chemistry 2021; 27:7593-7624. [PMID: 33533096 DOI: 10.1002/chem.202005065] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Indexed: 12/27/2022]
Abstract
Glycodendrimers are an important class of synthetic macromolecules that can be used to mimic many structural and functional features of cell-surface glycoconjugates. Their carbohydrate moieties perform key important functions in bacterial and viral infections, often regulated by carbohydrate-protein interactions. Several studies have shown that the molecular structure, valency and spatial organisation of carbohydrate epitopes in glycoconjugates are key factors in the specificity and avidity of carbohydrate-protein interactions. Choosing the right glycodendrimers almost always helps to interfere with such interactions and blocks bacterial or viral adhesion and entry into host cells as an effective strategy to inhibit bacterial or viral infections. Herein, the state of the art in the design and synthesis of glycodendrimers employed for the development of anti-adhesion therapy against bacterial and viral infections is described.
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Affiliation(s)
- Pilar Hoyos
- Chemistry in Pharmaceutical Sciences Department, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Almudena Perona
- Chemistry in Pharmaceutical Sciences Department, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
| | - Olga Juanes
- Organic Chemistry Department, Autónoma University of Madrid, Francisco Tomás y Valiente 7, 28049, Madrid, Spain
| | - Ángel Rumbero
- Organic Chemistry Department, Autónoma University of Madrid, Francisco Tomás y Valiente 7, 28049, Madrid, Spain
| | - María J Hernáiz
- Chemistry in Pharmaceutical Sciences Department, Complutense University of Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid, Spain
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Mousavifar L, Roy R. Design, Synthetic Strategies, and Therapeutic Applications of Heterofunctional Glycodendrimers. Molecules 2021; 26:2428. [PMID: 33921945 PMCID: PMC8122629 DOI: 10.3390/molecules26092428] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 12/11/2022] Open
Abstract
Glycodendrimers have attracted considerable interest in the field of dendrimer sciences owing to their plethora of implications in biomedical applications. This is primarily due to the fact that cell surfaces expose a wide range of highly diversified glycan architectures varying by the nature of the sugars, their number, and their natural multiantennary structures. This particular situation has led to cancer cell metastasis, pathogen recognition and adhesion, and immune cell communications that are implicated in vaccine development. The diverse nature and complexity of multivalent carbohydrate-protein interactions have been the impetus toward the syntheses of glycodendrimers. Since their inception in 1993, chemical strategies toward glycodendrimers have constantly evolved into highly sophisticated methodologies. This review constitutes the first part of a series of papers dedicated to the design, synthesis, and biological applications of heterofunctional glycodendrimers. Herein, we highlight the most common synthetic approaches toward these complex molecular architectures and present modern applications in nanomolecular therapeutics and synthetic vaccines.
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Affiliation(s)
| | - René Roy
- Glycosciences and Nanomaterial Laboratory, Université du Québec à Montréal, P.O. Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada;
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9
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Zhang Y, Yu Y, Li G, Zhang X, Wu Z, Lin L. Epithelium-Penetrable Nanoplatform with Enhanced Antibiotic Internalization for Management of Bacterial Keratitis. Biomacromolecules 2021; 22:2020-2032. [PMID: 33880923 DOI: 10.1021/acs.biomac.1c00139] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A standardized regimen for addressing the adverse effects of bacterial keratitis on vision remains an intractable challenge due to poor epithelial penetration and a short corneal retention time. In this study, a new strategy is proposed to implement the direct transport of antibiotics to bacteria-infected corneas via topical administration of an epithelium-penetrable biodriven nanoplatform, thereby enabling the efficacious treatment of bacterial keratitis. The nanoplatforms were composed of amphiphilic glycopolymers containing boron dipyrromethene and boronic acid moieties with stable fluorescence characteristics and the ability to potentiate epithelial penetration deep into the cornea. The boronic acid-derived nanoplatforms enabled efficient cellular internalization through the high affinity of boric acid groups for the diol-containing bacterial cell wall, resulting in enhanced drug penetration and retention inside the pathogenic bacteria. The bacterial cells formed agglomerations after incorporating the nanoplatforms along with a special mechanism to release the encapsulated cargo in response to in situ bacteria. Compared with the drug alone, this smart system achieved enhanced bacterial mortality and attenuated inflammation associated with Staphylococcus aureus-induced keratitis in rats, demonstrating a paradigm for targeted ocular drug delivery and an alternative strategy for managing bacterial keratitis or other bacterial infections by heightening corneal permeability and transcorneal bioavailability.
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Affiliation(s)
- Yanlong Zhang
- State Key Laboratory of Precision Measurement Technology and Instrument, School of Precision Instruments & Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China.,Tianjin Key Laboratory of Biomedical Detection Techniques & Instruments, Tianjin University, Tianjin 300072, China.,Tianjin International Joint Research and Development Centre of Ophthalmology and Vision Science, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Yunjian Yu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang Li
- State Key Laboratory of Precision Measurement Technology and Instrument, School of Precision Instruments & Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China.,Tianjin Key Laboratory of Biomedical Detection Techniques & Instruments, Tianjin University, Tianjin 300072, China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhongming Wu
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Ling Lin
- State Key Laboratory of Precision Measurement Technology and Instrument, School of Precision Instruments & Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China.,Tianjin Key Laboratory of Biomedical Detection Techniques & Instruments, Tianjin University, Tianjin 300072, China
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10
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Fernandes de Oliveira LM, Steindorff M, Darisipudi MN, Mrochen DM, Trübe P, Bröker BM, Brönstrup M, Tegge W, Holtfreter S. Discovery of Staphylococcus aureus Adhesion Inhibitors by Automated Imaging and Their Characterization in a Mouse Model of Persistent Nasal Colonization. Microorganisms 2021; 9:microorganisms9030631. [PMID: 33803564 PMCID: PMC8002927 DOI: 10.3390/microorganisms9030631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/10/2021] [Accepted: 03/14/2021] [Indexed: 01/26/2023] Open
Abstract
Due to increasing mupirocin resistance, alternatives for Staphylococcus aureus nasal decolonization are urgently needed. Adhesion inhibitors are promising new preventive agents that may be less prone to induce resistance, as they do not interfere with the viability of S. aureus and therefore exert less selection pressure. We identified promising adhesion inhibitors by screening a library of 4208 compounds for their capacity to inhibit S. aureus adhesion to A-549 epithelial cells in vitro in a novel automated, imaging-based assay. The assay quantified DAPI-stained nuclei of the host cell; attached bacteria were stained with an anti-teichoic acid antibody. The most promising candidate, aurintricarboxylic acid (ATA), was evaluated in a novel persistent S. aureus nasal colonization model using a mouse-adapted S. aureus strain. Colonized mice were treated intranasally over 7 days with ATA using a wide dose range (0.5–10%). Mupirocin completely eliminated the bacteria from the nose within three days of treatment. In contrast, even high concentrations of ATA failed to eradicate the bacteria. To conclude, our imaging-based assay and the persistent colonization model provide excellent tools to identify and validate new drug candidates against S. aureus nasal colonization. However, our first tested candidate ATA failed to induce S. aureus decolonization.
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Affiliation(s)
- Liliane Maria Fernandes de Oliveira
- Institute of Immunology and Transfusion Medicine, Department of Immunology, University Medicine Greifswald, 17475 Greifswald, Germany; (L.M.F.d.O.); (M.N.D.); (D.M.M.); (P.T.); (B.M.B.)
| | - Marina Steindorff
- Helmholtz Centre for Infection Research, Department of Chemical Biology, 38124 Braunschweig, Germany (M.B.)
| | - Murthy N. Darisipudi
- Institute of Immunology and Transfusion Medicine, Department of Immunology, University Medicine Greifswald, 17475 Greifswald, Germany; (L.M.F.d.O.); (M.N.D.); (D.M.M.); (P.T.); (B.M.B.)
| | - Daniel M. Mrochen
- Institute of Immunology and Transfusion Medicine, Department of Immunology, University Medicine Greifswald, 17475 Greifswald, Germany; (L.M.F.d.O.); (M.N.D.); (D.M.M.); (P.T.); (B.M.B.)
| | - Patricia Trübe
- Institute of Immunology and Transfusion Medicine, Department of Immunology, University Medicine Greifswald, 17475 Greifswald, Germany; (L.M.F.d.O.); (M.N.D.); (D.M.M.); (P.T.); (B.M.B.)
| | - Barbara M. Bröker
- Institute of Immunology and Transfusion Medicine, Department of Immunology, University Medicine Greifswald, 17475 Greifswald, Germany; (L.M.F.d.O.); (M.N.D.); (D.M.M.); (P.T.); (B.M.B.)
| | - Mark Brönstrup
- Helmholtz Centre for Infection Research, Department of Chemical Biology, 38124 Braunschweig, Germany (M.B.)
| | - Werner Tegge
- Helmholtz Centre for Infection Research, Department of Chemical Biology, 38124 Braunschweig, Germany (M.B.)
- Correspondence: (W.T.); (S.H.)
| | - Silva Holtfreter
- Institute of Immunology and Transfusion Medicine, Department of Immunology, University Medicine Greifswald, 17475 Greifswald, Germany; (L.M.F.d.O.); (M.N.D.); (D.M.M.); (P.T.); (B.M.B.)
- Correspondence: (W.T.); (S.H.)
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11
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Tailored glycosylated anode surfaces: Addressing the exoelectrogen bacterial community via functional layers for microbial fuel cell applications. Bioelectrochemistry 2020; 136:107621. [DOI: 10.1016/j.bioelechem.2020.107621] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 12/11/2022]
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12
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A strategy to control colonization of pathogens: embedding of lactic acid bacteria on the surface of urinary catheter. Appl Microbiol Biotechnol 2020; 104:9053-9066. [PMID: 32949279 DOI: 10.1007/s00253-020-10903-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/04/2020] [Accepted: 09/10/2020] [Indexed: 01/13/2023]
Abstract
Indwelling urinary catheterization is one of the major causes of urinary tract infection (UTI) in hospitalized patients worldwide. A catheter serves as a surface for the colonization and formation of biofilm by UTI-related pathogenic bacteria. To combat the biofilm formation on its surface, several strategies have already been employed such as coating it with antibiofilm and antimicrobial compounds. For instance, the application of lactic acid bacteria (LAB) offers a potential strategy for the treatment of biofilm formation on the surface of the urinary catheter due to its ability to kill the pathogenic bacteria. The killing of pathogenic bacteria by LAB occurs via the production of antimicrobial compounds such as lactic acid, bacteriocin, and hydrogen peroxide. LAB also displays a competitive exclusion mechanism to prevent the adhesion of pathogens on the surfaces. Hence, LAB has been extensively applied as a bacteriotherapy to combat infectious diseases. Several strategies have been employed to attach LAB to a surface, but its easy detachment during long time exposure becomes one of the drawbacks in its application. Here, we have proposed a novel strategy for its adhesion on the surface of the urinary catheter with the utilization of mannose-specific adhesin (Msa) protein in a way similar as uropathogenic bacteria interacts between Msa present on the tip of the type I fimbriae/pilus and the mannose moieties on the host epithelial cell surfaces. KEY POINTS: • Urinary tract infection (UTI) is one of the common hospital-acquired infections, which is associated with the application of an indwelling urinary catheter. • Based on the competitive exclusions properties of LAB, attachment of the LAB on the catheter surface would be a promising approach to control the formation of pathogenic biofilm. • The strategy employed for the adhesion of LAB is via a covalent interaction of its mannose-specific adhesin (Msa) protein to the mannose residues grafted on the catheter surface.
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13
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Kawano Y, Jordan O, Hanawa T, Borchard G, Patrulea V. Are Antimicrobial Peptide Dendrimers an Escape from ESKAPE? Adv Wound Care (New Rochelle) 2020; 9:378-395. [PMID: 32320368 PMCID: PMC7307686 DOI: 10.1089/wound.2019.1113] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/18/2020] [Indexed: 12/16/2022] Open
Abstract
Significance: The crisis of antimicrobial resistance (AMR) increases dramatically despite all efforts to use available antibiotics or last resort antimicrobial agents. The spread of the AMR, declared as one of the most important health-related issues, warrants the development of new antimicrobial strategies. Recent Advances: Antimicrobial peptides (AMPs) and AMP dendrimers (AMPDs), as well as polymer dendrimers are relatively new and promising strategies with the potential to overcome drug resistance issues arising in ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) colonizing chronic wounds. Critical Issues: AMPs-AMPDs suffer from limited efficacy, short-lasting bioactivity, and concerns of toxicity. To circumvent these drawbacks, their covalent coupling to biopolymers and/or encapsulation into different drug carrier systems is investigated, with a special focus on topical applications. Future Directions: Scientists and the pharmaceutical industry should focus on this challenging subject to either improve the activity of existing antimicrobial agents or find new drug candidates. The focus should be put on the discovery of new drugs or the combination of existing drugs for a better synergy, taking into account all kinds of wounds and existing pathogens, and more specifically on the development of next-generation antimicrobial peptides, encompassing the delivery carrier toward improved pharmacokinetics and efficacy.
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Affiliation(s)
- Yayoi Kawano
- Laboratory of Preformulation Study, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Olivier Jordan
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Takehisa Hanawa
- Laboratory of Preformulation Study, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Gerrit Borchard
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Viorica Patrulea
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
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14
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Santos PJ, Cao Z, Zhang J, Alexander-Katz A, Macfarlane RJ. Dictating Nanoparticle Assembly via Systems-Level Control of Molecular Multivalency. J Am Chem Soc 2019; 141:14624-14632. [PMID: 31465688 DOI: 10.1021/jacs.9b04999] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Nanoparticle assembly can be controlled by multivalent binding interactions between surface ligands, indicating that more precise control over these interactions is important to design complex nanoscale architectures. It has been well-established in natural materials that the arrangement of different molecular species in three dimensions can affect the ability of individual supramolecular units to coordinate their binding, thereby regulating the strength and specificity of their collective molecular interactions. However, in artificial systems, limited examples exist that quantitatively demonstrate how changes in nanoscale geometry can be used to rationally modulate the thermodynamics of individual molecular binding interactions. As a result, the use of nanoscale design features to regulate molecular bonding remains an underutilized design handle to control nanomaterials synthesis. Here we demonstrate a polymer-coated nanoparticle material where supramolecular bonding and nanoscale structure are used in conjunction to dictate the thermodynamics of their multivalent interactions, resulting in emergent bundling of supramolecular binding groups that would not be expected on the basis of the molecular structures alone. Additionally, we show that these emergent phenomena can controllably alter the superlattice symmetry by using the mesoscale particle arrangement to alter the thermodynamics of the supramolecular bonding behavior. The ability to rationally program molecular multivalency via a systems-level approach therefore provides a major step forward in the assembly of complex artificial structures, with implications for future designs of both nanoparticle- and supramolecular-based materials.
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Affiliation(s)
- Peter J Santos
- Department of Materials Science and Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
| | - Zhen Cao
- Department of Materials Science and Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
| | - Jianyuan Zhang
- Department of Materials Science and Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
| | - Robert J Macfarlane
- Department of Materials Science and Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
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15
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Luo Y, Gu Y, Feng R, Brash J, Eissa AM, Haddleton DM, Chen G, Chen H. Synthesis of glycopolymers with specificity for bacterial strains via bacteria-guided polymerization. Chem Sci 2019; 10:5251-5257. [PMID: 31191880 PMCID: PMC6540911 DOI: 10.1039/c8sc05561k] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 04/15/2019] [Indexed: 12/16/2022] Open
Abstract
Glycopolymers with specificity to template strain of E. coli were synthesised by the bacteria-sugar monomer-aptation-polymerization.
Identifying probiotics and pathogens is of great interest to the health of the human body. It is critical to develop microbiota-targeted therapies to have high specificity including strain specificity. In this study, we have utilized E. coli MG1655 bacteria as living templates to synthesize glycopolymers in situ with high selectivity. By this bacteria-sugar monomer-aptation-polymerization (BS-MAP) method, we have obtained glycopolymers from the surface of bacteria which can recognize template bacteria from two strains of E. coli and the specific bacteria-binding ability of glycopolymers was confirmed by both bacterial aggregation experiment and QCM-D measurements. Furthermore, the synthesized glycopolymers have shown a powerful inhibitory ability which can prevent bacteria from harming cells in both anti-infection and co-culture tests.
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Affiliation(s)
- Yan Luo
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou , College of Chemistry , Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou , 215123 , P. R. China . .,Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology , Soochow University , Suzhou , 215006 , P. R. China .
| | - Yan Gu
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou , College of Chemistry , Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou , 215123 , P. R. China . .,Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology , Soochow University , Suzhou , 215006 , P. R. China .
| | - Ruyan Feng
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou , College of Chemistry , Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou , 215123 , P. R. China . .,Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology , Soochow University , Suzhou , 215006 , P. R. China .
| | - John Brash
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou , College of Chemistry , Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou , 215123 , P. R. China . .,School of Biomedical Engineering and Department of Chemical Engineering , McMaster University , Hamilton , Ontario L8S4L7 , Canada .
| | - Ahmed M Eissa
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry , CV4 7AL , UK .
| | - David M Haddleton
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry , CV4 7AL , UK .
| | - Gaojian Chen
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou , College of Chemistry , Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou , 215123 , P. R. China . .,Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology , Soochow University , Suzhou , 215006 , P. R. China .
| | - Hong Chen
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou , College of Chemistry , Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou , 215123 , P. R. China .
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16
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Coleman CM, Auker KM, Killday KB, Azadi P, Black I, Ferreira D. Arabinoxyloglucan Oligosaccharides May Contribute to the Antiadhesive Properties of Porcine Urine after Cranberry Consumption. JOURNAL OF NATURAL PRODUCTS 2019; 82:589-605. [PMID: 30873836 DOI: 10.1021/acs.jnatprod.8b01043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cranberry ( Vaccinium macrocarpon) juice is traditionally used for the prevention of urinary tract infections. Human urine produced after cranberry juice consumption can prevent Escherichia coli adhesion, but the antiadhesive urinary metabolites responsible have not been conclusively identified. Adult female sows were therefore fed spray-dried cranberry powder (5 g/kg/day), and urine was collected via catheter. Urine fractions were tested for antiadhesion activity using a human red blood cell (A+) anti-hemagglutination assay with uropathogenic P-fimbriated E. coli. Components were isolated from fractions of interest using Sephadex LH-20 gel filtration chromatography followed by HPLC on normal and reversed-phase sorbents with evaporative light scattering detection. Active urine fractions were found to contain a complex series of oligosaccharides but not proanthocyanidins, and a single representative arabinoxyloglucan octasaccharide was isolated in sufficient quantity and purity for full structural characterization by chemical derivatization and NMR spectroscopic methods. Analogous cranberry material contained a similar complex series of arabinoxyloglucan oligosaccharides that exhibited antiadhesion properties in preliminary testing. These results indicate that oligosaccharides structurally related to those found in cranberry may contribute to the antiadhesion properties of urine after cranberry consumption.
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Affiliation(s)
- Christina M Coleman
- Department of BioMolecular Sciences, Division of Pharmacognosy, and the Research Institute of Pharmaceutical Sciences, School of Pharmacy , University of Mississippi , University , Mississippi 38677 , United States
| | - Kimberly M Auker
- Department of BioMolecular Sciences, Division of Pharmacognosy, and the Research Institute of Pharmaceutical Sciences, School of Pharmacy , University of Mississippi , University , Mississippi 38677 , United States
| | - K Brian Killday
- Bruker BioSpin Corporation , Billerica , Massachusetts 01821 , United States
| | - Parastoo Azadi
- Complex Carbohydrate Research Center , University of Georgia , Athens , Georgia 30602 , United States
| | - Ian Black
- Complex Carbohydrate Research Center , University of Georgia , Athens , Georgia 30602 , United States
| | - Daneel Ferreira
- Department of BioMolecular Sciences, Division of Pharmacognosy, and the Research Institute of Pharmaceutical Sciences, School of Pharmacy , University of Mississippi , University , Mississippi 38677 , United States
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17
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Boden S, Reise F, Kania J, Lindhorst TK, Hartmann L. Sequence-Defined Introduction of Hydrophobic Motifs and Effects in Lectin Binding of Precision Glycomacromolecules. Macromol Biosci 2019; 19:e1800425. [PMID: 30707496 DOI: 10.1002/mabi.201800425] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/11/2019] [Indexed: 12/11/2022]
Abstract
This study investigates the influence of an increasingly hydrophobic backbone of multivalent glycomimetics based on sequence-defined oligo(amidoamines) on their resulting affinity toward bacterial lectins. Glycomacromolecules are obtained by stepwise assembly of tailor-made building blocks on solid support, using both hydrophobic aliphatic and aromatic building blocks to enable a gradual change in hydrophobicity of the backbone. Their binding behavior toward model lectin Concanavalin A (ConA) is evaluated using isothermal titration calorimetry (ITC) and surface plasmon resonance (SPR) showing higher affinities for glycomacromolecules with higher content of hydrophobic and aromatic moieties in the backbone. Finally, glycomacromolecules are tested in a bacterial adhesion inhibition study against Escherichia coli where more hydrophobic backbones yield higher inhibitory potentials most likely due to additional secondary interactions with hydrophobic regions of the protein receptor as well as a change in conformation exposing carbohydrate ligands for increased binding. Overall, the results highlight the influence and thereby importance of the polymer backbone itself on the resulting properties of polymeric biomimetics.
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Affiliation(s)
- Sophia Boden
- Institute of Organic and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Franziska Reise
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3-4, 24118, Kiel, Germany
| | - Jessica Kania
- Institute of Organic and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
| | - Thisbe K Lindhorst
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3-4, 24118, Kiel, Germany
| | - Laura Hartmann
- Institute of Organic and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany
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18
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Sehad C, Shiao TC, Sallam LM, Azzouz A, Roy R. Effect of Dendrimer Generation and Aglyconic Linkers on the Binding Properties of Mannosylated Dendrimers Prepared by a Combined Convergent and Onion Peel Approach. Molecules 2018; 23:E1890. [PMID: 30060568 PMCID: PMC6222628 DOI: 10.3390/molecules23081890] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 12/22/2022] Open
Abstract
An efficient study of carbohydrate-protein interactions was achieved using multivalent glycodendrimer library. Different dendrimers with varied peripheral sugar densities and linkers provided an arsenal of potential novel therapeutic agents that could be useful for better specific action and greater binding affinities against their cognate protein receptors. Highly effective click chemistry represents the basic method used for the synthesis of mannosylated dendrimers. To this end, we used propargylated scaffolds of varying sugar densities ranging from 2 to 18 for the attachment of azido mannopyranoside derivatives using copper catalyzed click cycloaddition. Mannopyranosides with short and pegylated aglycones were used to evaluate their effects on the kinetics of binding. The mannosylated dendrons were built using varied scaffolds toward the accelerated and combined "onion peel" strategy These carbohydrates have been designed to fight E. coli urinary infections, by inhibiting the formation of bacterial biofilms, thus neutralizing the adhesion of FimH type 1 lectin present at the tip of their fimbriae against the natural multiantennary oligomannosides of uroplakin 1a receptors expressed on uroepithelial tissues. Preliminary DLS studies of the mannosylated dendrimers to cross- link the leguminous lectin Con A used as a model showed their high potency as candidates to fight the E. coli adhesion and biofilm formation.
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Affiliation(s)
- Celia Sehad
- Department of Chemistry, University of Québec a Montréal, P.O. Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada.
| | - Tze Chieh Shiao
- Department of Chemistry, University of Québec a Montréal, P.O. Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada.
| | - Lamyaa M Sallam
- Department of Chemistry, University of Québec a Montréal, P.O. Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada.
| | - Abdelkrim Azzouz
- Department of Chemistry, University of Québec a Montréal, P.O. Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada.
| | - René Roy
- Department of Chemistry, University of Québec a Montréal, P.O. Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada.
- Glycovax Pharma Inc., 424 Guy, Suite 202, Montreal, QC H3J 1S6, Canada.
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19
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Krammer EM, de Ruyck J, Roos G, Bouckaert J, Lensink MF. Targeting Dynamical Binding Processes in the Design of Non-Antibiotic Anti-Adhesives by Molecular Simulation-The Example of FimH. Molecules 2018; 23:E1641. [PMID: 29976867 PMCID: PMC6099838 DOI: 10.3390/molecules23071641] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 06/29/2018] [Accepted: 07/02/2018] [Indexed: 12/11/2022] Open
Abstract
Located at the tip of type I fimbria of Escherichia coli, the bacterial adhesin FimH is responsible for the attachment of the bacteria to the (human) host by specifically binding to highly-mannosylated glycoproteins located on the exterior of the host cell wall. Adhesion represents a necessary early step in bacterial infection and specific inhibition of this process represents a valuable alternative pathway to antibiotic treatments, as such anti-adhesive drugs are non-intrusive and are therefore unlikely to induce bacterial resistance. The currently available anti-adhesives with the highest affinities for FimH still feature affinities in the nanomolar range. A prerequisite to develop higher-affinity FimH inhibitors is a molecular understanding of the FimH-inhibitor complex formation. The latest insights in the formation process are achieved by combining several molecular simulation and traditional experimental techniques. This review summarizes how molecular simulation contributed to the current knowledge of the molecular function of FimH and the importance of dynamics in the inhibitor binding process, and highlights the importance of the incorporation of dynamical aspects in (future) drug-design studies.
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Affiliation(s)
- Eva-Maria Krammer
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Jerome de Ruyck
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Goedele Roos
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Julie Bouckaert
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Marc F Lensink
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
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20
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Phenotypic Variation during Biofilm Formation: Implications for Anti-Biofilm Therapeutic Design. MATERIALS 2018; 11:ma11071086. [PMID: 29949876 PMCID: PMC6073711 DOI: 10.3390/ma11071086] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 06/21/2018] [Accepted: 06/22/2018] [Indexed: 12/20/2022]
Abstract
Various bacterial species cycle between growth phases and biofilm formation, of which the latter facilitates persistence in inhospitable environments. These phases can be generally characterized by one or more cellular phenotype(s), each with distinct virulence factor functionality. In addition, a variety of phenotypes can often be observed within the phases themselves, which can be dependent on host conditions or the presence of nutrient and oxygen gradients within the biofilm itself (i.e., microenvironments). Currently, most anti-biofilm strategies have targeted a single phenotype; this approach has driven effective, yet incomplete, protection due to the lack of consideration of gene expression dynamics throughout the bacteria’s pathogenesis. As such, this article provides an overview of the distinct phenotypes found within each biofilm development phase and demonstrates the unique anti-biofilm solutions each phase offers. However, we conclude that a combinatorial approach must be taken to provide complete protection against biofilm forming bacterial and their resulting diseases.
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21
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Ven Chang I, Tsutsumi H, Mihara H. Screening for concanavalin A binders from a mannose-modified α-helix peptide phage library. MOLECULAR BIOSYSTEMS 2018; 13:2222-2225. [PMID: 28967020 DOI: 10.1039/c7mb00495h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mannose-modified lectin-binding peptides were obtained from an α-helical-designed peptide phage library. Concanavalin A (ConA) was used as a representative target protein for the lectin family. The identified glycopeptides could selectively bind to ConA with micromolar affinity. With these results, the methodologies described in this study will enhance the selection of saccharide-modified ligands through the synergistic effects of sugar and peptide units, with better specificity and affinity towards lectin proteins.
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Affiliation(s)
- Iou Ven Chang
- Department of Bioengineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Nagatsuta-cho 4259-B40, Midori-ku, Yokohama 226-8501, Japan
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22
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Pham VTH, Murugaraj P, Mathes F, Tan BK, Truong VK, Murphy DV, Mainwaring DE. Copolymers enhance selective bacterial community colonization for potential root zone applications. Sci Rep 2017; 7:15902. [PMID: 29162884 PMCID: PMC5698314 DOI: 10.1038/s41598-017-16253-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/08/2017] [Indexed: 12/31/2022] Open
Abstract
Managing the impact of anthropogenic and climate induced stress on plant growth remains a challenge. Here we show that polymeric hydrogels, which maintain their hydrous state, can be designed to exploit functional interactions with soil microorganisms. This microbial enhancement may mitigate biotic and abiotic stresses limiting productivity. The presence of mannan chains within synthetic polyacrylic acid (PAA) enhanced the dynamics and selectivity of bacterial ingress in model microbial systems and soil microcosms. Pseudomonas fluorescens exhibiting high mannan binding adhesins showed higher ingress and localised microcolonies throughout the polymeric network. In contrast, ingress of Bacillus subtilis, lacking adhesins, was unaltered by mannan showing motility comparable to bulk liquids. Incubation within microcosms of an agricultural soil yielded hydrogel populations significantly increased from the corresponding soil. Bacterial diversity was markedly higher in mannan containing hydrogels compared to both control polymer and soil, indicating enhanced selectivity towards microbial families that contain plant beneficial species. Here we propose functional polymers applied to the potential root zone which can positively influence rhizobacteria colonization and potentially plant growth as a new approach to stress tolerance.
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Affiliation(s)
- Vy T H Pham
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Pandiyan Murugaraj
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Falko Mathes
- SoilsWest, UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, Crawley, WA6009, Australia
| | - Boon K Tan
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Vi Khanh Truong
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Daniel V Murphy
- SoilsWest, UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, Crawley, WA6009, Australia
| | - David E Mainwaring
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
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23
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Mayer K, Eris D, Schwardt O, Sager CP, Rabbani S, Kleeb S, Ernst B. Urinary Tract Infection: Which Conformation of the Bacterial Lectin FimH Is Therapeutically Relevant? J Med Chem 2017; 60:5646-5662. [PMID: 28471659 DOI: 10.1021/acs.jmedchem.7b00342] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Frequent antibiotic treatment of urinary tract infections has resulted in the emergence of antimicrobial resistance, necessitating alternative treatment options. One such approach centers around FimH antagonists that block the bacterial adhesin FimH, which would otherwise mediate binding of uropathogenic Escherichia coli to the host urothelium to trigger the infection. Although the FimH lectin can adopt three distinct conformations, the evaluation of FimH antagonists has mainly been performed with a truncated construct of FimH locked in one particular conformation. For a successful therapeutic application, however, FimH antagonists should be efficacious against all physiologically relevant conformations. Therefore, FimH constructs with the capacity to adopt various conformations were applied. By examining the binding properties of a series of FimH antagonists in terms of binding affinity and thermodynamics, we demonstrate that depending on the FimH construct, affinities may be overestimated by a constant factor of 2 orders of magnitude. In addition, we report several antagonists with excellent affinities for all FimH conformations.
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Affiliation(s)
- Katharina Mayer
- Institute of Molecular Pharmacy, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Deniz Eris
- Institute of Molecular Pharmacy, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Oliver Schwardt
- Institute of Molecular Pharmacy, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Christoph P Sager
- Institute of Molecular Pharmacy, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Said Rabbani
- Institute of Molecular Pharmacy, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Simon Kleeb
- Institute of Molecular Pharmacy, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Beat Ernst
- Institute of Molecular Pharmacy, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
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24
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Eissa AM, Abdulkarim A, Sharples GJ, Cameron NR. Glycosylated Nanoparticles as Efficient Antimicrobial Delivery Agents. Biomacromolecules 2016; 17:2672-9. [DOI: 10.1021/acs.biomac.6b00711] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ahmed M. Eissa
- Department
of Chemistry, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
- School
of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Department
of Materials Science and Engineering, Monash University, Clayton 3800, Victoria Australia
- Department
of Polymers, Chemical Industries Research Division, National Research Centre (NRC), El-Bohoos Street, Dokki, Cairo Egypt
| | - Ali Abdulkarim
- Department
of Chemistry, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
| | - Gary J. Sharples
- School
of Biological and Biomedical Sciences, Biophysical Sciences Institute,
Department of Chemistry, University of Durham, Durham DH1 3LE, United Kingdom
| | - Neil R. Cameron
- Department
of Chemistry, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
- School
of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Department
of Materials Science and Engineering, Monash University, Clayton 3800, Victoria Australia
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25
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Xu Y, Wei MT, Ou-Yang HD, Walker SG, Wang HZ, Gordon CR, Guterman S, Zawacki E, Applebaum E, Brink PR, Rafailovich M, Mironava T. Exposure to TiO2 nanoparticles increases Staphylococcus aureus infection of HeLa cells. J Nanobiotechnology 2016; 14:34. [PMID: 27102228 PMCID: PMC4840899 DOI: 10.1186/s12951-016-0184-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 04/10/2016] [Indexed: 01/02/2023] Open
Abstract
Background Titanium dioxide (TiO2) is one of the most common nanoparticles found in industry ranging from food additives to energy generation. Approximately four million tons of TiO2 particles are produced worldwide each year with approximately 3000 tons being produced in nanoparticulate form, hence exposure to these particles is almost certain. Results Even though TiO2 is also used as an anti-bacterial agent in combination with UV, we have found that, in the absence of UV, exposure of HeLa cells to TiO2 nanoparticles significantly increased their risk of bacterial invasion. HeLa cells cultured with 0.1 mg/ml rutile and anatase TiO2 nanoparticles for 24 h prior to exposure to bacteria had 350 and 250 % respectively more bacteria per cell. The increase was attributed to bacterial polysaccharides absorption on TiO2 NPs, increased extracellular LDH, and changes in the mechanical response of the cell membrane. On the other hand, macrophages exposed to TiO2 particles ingested 40 % fewer bacteria, further increasing the risk of infection. Conclusions In combination, these two factors raise serious concerns regarding the impact of exposure to TiO2 nanoparticles on the ability of organisms to resist bacterial infection. Electronic supplementary material The online version of this article (doi:10.1186/s12951-016-0184-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yan Xu
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Ming-Tzo Wei
- Department of Bioengineering, Lehigh University, Bethlehem, PA, USA
| | - H Daniel Ou-Yang
- Department of Bioengineering, Lehigh University, Bethlehem, PA, USA
| | - Stephen G Walker
- Department of Oral Biology and Pathology, School of Dental Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Hong Zhan Wang
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY, USA
| | - Chris R Gordon
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY, USA
| | | | - Emma Zawacki
- University of California at Los Angeles, Los Angeles, CA, USA
| | | | - Peter R Brink
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY, USA
| | - Miriam Rafailovich
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Tatsiana Mironava
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, USA.
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26
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Biopolymeric Mucin and Synthetic Polymer Analogs: Their Structure, Function and Role in Biomedical Applications. Polymers (Basel) 2016; 8:polym8030071. [PMID: 30979166 PMCID: PMC6432556 DOI: 10.3390/polym8030071] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 02/23/2016] [Accepted: 02/24/2016] [Indexed: 12/17/2022] Open
Abstract
Mucin networks are viscoelastic fibrillar aggregates formed through the complex self-association of biopolymeric glycoprotein chains. The networks form a lubricious, hydrated protective shield along epithelial regions within the human body. The critical role played by mucin networks in impacting the transport properties of biofunctional molecules (e.g., biogenic molecules, probes, nanoparticles), and its effect on bioavailability are well described in the literature. An alternate perspective is provided in this paper, presenting mucin’s complex network structure, and its interdependent functional characteristics in human physiology. We highlight the recent advances that were achieved through the use of mucin in diverse areas of bioengineering applications (e.g., drug delivery, biomedical devices and tissue engineering). Mucin network formation is a highly complex process, driven by wide variety of molecular interactions, and the network possess structural and chemical variations, posing a great challenge to understand mucin’s bulk behavior. Through this review, the prospective potential of polymer based analogs to serve as mucin mimic is suggested. These analog systems, apart from functioning as an artificial model, reducing the current dependency on animal models, can aid in furthering our fundamental understanding of such complex structures.
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27
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Fang W, Han C, Zhang H, Wei W, Liu R, Shen Y. Preparation of amino-functionalized magnetic nanoparticles for enhancement of bacterial capture efficiency. RSC Adv 2016. [DOI: 10.1039/c6ra13070d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
PEI-MNPs were successfully fabricated, which showed higher bacterial capture ability than the triaminopropylalkoxysilane directly modified NH-MNPs at low concentration.
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Affiliation(s)
- Weijun Fang
- School of Basic Medical Sciences
- Anhui Medical University
- Hefei 230032
- P. R. China
- Biopharmaceutical Research Institute
| | - Chen Han
- Institute of Quality Inspection of Light Industry & Chemical Products
- Shanghai Institute of Quality Inspection and Technical Research
- Shanghai 201114
- P. R. China
| | - Huabing Zhang
- School of Basic Medical Sciences
- Anhui Medical University
- Hefei 230032
- P. R. China
| | - Wenmei Wei
- School of Basic Medical Sciences
- Anhui Medical University
- Hefei 230032
- P. R. China
| | - Rui Liu
- School of Basic Medical Sciences
- Anhui Medical University
- Hefei 230032
- P. R. China
| | - Yuxian Shen
- School of Basic Medical Sciences
- Anhui Medical University
- Hefei 230032
- P. R. China
- Biopharmaceutical Research Institute
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28
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Cid Martín JJ, Assali M, Fernández-García E, Valdivia V, Sánchez-Fernández EM, Garcia Fernández JM, Wellinger RE, Fernández I, Khiar N. Tuning of glyconanomaterial shape and size for selective bacterial cell agglutination. J Mater Chem B 2016; 4:2028-2037. [DOI: 10.1039/c5tb02488a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Acting as veritable glue, 1D-coated mannose carbon nanotubes efficiently and selectively regulate the agglutination and proliferation of the enterobacteriaEscherichia colitype 1 fimbriae, much better than the mannose coated 3D-micelles.
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Affiliation(s)
- J. J. Cid Martín
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ)
- CSIC and Universidad de Sevilla
- Seville
- Spain
| | - M. Assali
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ)
- CSIC and Universidad de Sevilla
- Seville
- Spain
| | - E. Fernández-García
- Miochondrial Plasticity and Replication Laboratory
- Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER)
- Seville
- Spain
| | - V. Valdivia
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ)
- CSIC and Universidad de Sevilla
- Seville
- Spain
- Departamento de Química Orgánica y Farmacéutica
| | | | - J. M. Garcia Fernández
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ)
- CSIC and Universidad de Sevilla
- Seville
- Spain
| | - R. E. Wellinger
- Miochondrial Plasticity and Replication Laboratory
- Andalusian Center for Molecular Biology and Regenerative Medicine (CABIMER)
- Seville
- Spain
| | - I. Fernández
- Departamento de Química Orgánica y Farmacéutica
- Universidad de Sevilla
- 41012 Seville
- Spain
| | - N. Khiar
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ)
- CSIC and Universidad de Sevilla
- Seville
- Spain
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29
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Singh N, Shetye GS, Zheng H, Sun J, Luk YY. Chemical Signals of Synthetic Disaccharide Derivatives Dominate Rhamnolipids at Controlling Multiple Bacterial Activities. Chembiochem 2015; 17:102-11. [DOI: 10.1002/cbic.201500396] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Nischal Singh
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Gauri S. Shetye
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Hewen Zheng
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Jiayue Sun
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
| | - Yan-Yeung Luk
- Department of Chemistry; Syracuse University; 1-014 CST, 111 College Place Syracuse NY 13244 USA
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30
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Brambilla E, Ionescu AC, Cazzaniga G, Ottobelli M, Samaranayake LP. Levorotatory carbohydrates and xylitol subdueStreptococcus mutansandCandida albicansadhesion and biofilm formation. J Basic Microbiol 2015; 56:480-92. [DOI: 10.1002/jobm.201500329] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Accepted: 09/13/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Eugenio Brambilla
- Department of Biomedical, Surgical and Dental Sciences, IRCCS Galeazzi Institute; University of Milan; Milan Italy
| | - Andrei C. Ionescu
- Department of Biomedical, Surgical and Dental Sciences, IRCCS Galeazzi Institute; University of Milan; Milan Italy
| | - Gloria Cazzaniga
- Department of Biomedical, Surgical and Dental Sciences, IRCCS Galeazzi Institute; University of Milan; Milan Italy
| | - Marco Ottobelli
- Department of Biomedical, Surgical and Dental Sciences, IRCCS Galeazzi Institute; University of Milan; Milan Italy
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31
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Fiege B, Rabbani S, Preston RC, Jakob RP, Zihlmann P, Schwardt O, Jiang X, Maier T, Ernst B. The tyrosine gate of the bacterial lectin FimH: a conformational analysis by NMR spectroscopy and X-ray crystallography. Chembiochem 2015; 16:1235-46. [PMID: 25940742 DOI: 10.1002/cbic.201402714] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Indexed: 12/22/2022]
Abstract
Urinary tract infections caused by uropathogenic E. coli are among the most prevalent infectious diseases. The mannose-specific lectin FimH mediates the adhesion of the bacteria to the urothelium, thus enabling host cell invasion and recurrent infections. An attractive alternative to antibiotic treatment is the development of FimH antagonists that mimic the physiological ligand. A large variety of candidate drugs have been developed and characterized by means of in vitro studies and animal models. Here we present the X-ray co-crystal structures of FimH with members of four antagonist classes. In three of these cases no structural data had previously been available. We used NMR spectroscopy to characterize FimH-antagonist interactions further by chemical shift perturbation. The analysis allowed a clear determination of the conformation of the tyrosine gate motif that is crucial for the interaction with aglycone moieties and was not obvious from X-ray structural data alone. Finally, ITC experiments provided insight into the thermodynamics of antagonist binding. In conjunction with the structural information from X-ray and NMR experiments the results provide a mechanism for the often-observed enthalpy-entropy compensation of FimH antagonists that plays a role in fine-tuning of the interaction.
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Affiliation(s)
- Brigitte Fiege
- Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland)
| | - Said Rabbani
- Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland)
| | - Roland C Preston
- Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland)
| | - Roman P Jakob
- Structural Biology, Biozentrum, University of Basel, Klingelbergstrasse 70, 4056 Basel (Switzerland)
| | - Pascal Zihlmann
- Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland)
| | - Oliver Schwardt
- Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland)
| | - Xiaohua Jiang
- Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland)
| | - Timm Maier
- Structural Biology, Biozentrum, University of Basel, Klingelbergstrasse 70, 4056 Basel (Switzerland).
| | - Beat Ernst
- Institute of Molecular Pharmacy, University of Basel, Klingelbergstrasse 50, 4056 Basel (Switzerland).
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32
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Fu O, Pukin AV, Quarles van Ufford HC, Kemmink J, de Mol NJ, Pieters RJ. Functionalization of a Rigid Divalent Ligand for LecA, a Bacterial Adhesion Lectin. ChemistryOpen 2015; 4:463-70. [PMID: 26478841 PMCID: PMC4603407 DOI: 10.1002/open.201402171] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Indexed: 11/21/2022] Open
Abstract
The bacterial adhesion lectin LecA is an attractive target for interference with the infectivity of its producer P. aeruginosa. Divalent ligands with two terminal galactoside moieties connected by an alternating glucose-triazole spacer were previously shown to be very potent inhibitors. In this study, we chose to prepare a series of derivatives with various new substituents in the spacer in hopes of further enhancing the LecA inhibitory potency of the molecules. Based on the binding mode, modifications were made to the spacer to enable additional spacer–protein interactions. The introduction of positively charged, negatively charged, and also lipophilic functional groups was successful. The compounds were good LecA ligands, but no improved binding was seen, even though altered thermodynamic parameters were observed by isothermal titration calorimetry (ITC).
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Affiliation(s)
- Ou Fu
- Department of Medicinal Chemistry and Chemical Biology, Utrecht University P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Aliaksei V Pukin
- Department of Medicinal Chemistry and Chemical Biology, Utrecht University P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - H C Quarles van Ufford
- Department of Medicinal Chemistry and Chemical Biology, Utrecht University P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Johan Kemmink
- Department of Medicinal Chemistry and Chemical Biology, Utrecht University P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Nico J de Mol
- Department of Medicinal Chemistry and Chemical Biology, Utrecht University P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
| | - Roland J Pieters
- Department of Medicinal Chemistry and Chemical Biology, Utrecht University P.O. Box 80082, 3508 TB, Utrecht, The Netherlands
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33
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Wilkins LE, Phillips DJ, Deller RC, Davies GL, Gibson MI. Synthesis and characterisation of glucose-functional glycopolymers and gold nanoparticles: study of their potential interactions with ovine red blood cells. Carbohydr Res 2015; 405:47-54. [DOI: 10.1016/j.carres.2014.09.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 09/24/2014] [Accepted: 09/26/2014] [Indexed: 10/24/2022]
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34
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Lindhorst TK, Dubber M. Octopus glycosides: multivalent molecular platforms for testing carbohydrate recognition and bacterial adhesion. Carbohydr Res 2015; 403:90-7. [DOI: 10.1016/j.carres.2014.06.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 06/26/2014] [Accepted: 06/30/2014] [Indexed: 01/28/2023]
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35
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Congdon T, Wilmet C, Williams R, Polt J, Lilliman M, Gibson MI. Diversely functionalised carbohydrate-centered oligomers and polymers. Thermoresponsivity, lectin binding and degradability. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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36
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High-Throughput Synthesis of Diverse Compound Collections for Lead Discovery and Optimization. Handb Exp Pharmacol 2015; 232:73-89. [PMID: 26330259 DOI: 10.1007/164_2015_25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Small-molecule intervention of protein function is one central dogma of drug discovery. The generation of small-molecule libraries fuels the discovery pipeline at many stages and thereby resembles a key aspect of this endeavor. High-throughput synthesis is a major source for compound libraries utilized in academia and industry, seeking new chemical modulators of pharmacological targets. Here, we discuss the crucial factors of library design strategies from the perspective of synthetic chemistry, giving a brief historic background and a summary of current approaches. Simple measures of success of a high-throughput synthesis such as quantity or diversity have long been discarded and replaced by more integrated measures. Case studies are presented and put into context to highlight the cross-connectivity of the various stages of the drug discovery process.
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37
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Park H, Rosencrantz RR, Elling L, Böker A. Glycopolymer Brushes for Specific Lectin Binding by Controlled Multivalent Presentation ofN-Acetyllactosamine Glycan Oligomers. Macromol Rapid Commun 2014; 36:45-54. [DOI: 10.1002/marc.201400453] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 09/28/2014] [Indexed: 12/18/2022]
Affiliation(s)
- Hyunji Park
- DWI - Leibniz-Institut für Interaktive Materialien; Lehrstuhl für Makromolekulare Materialien und Oberflächen; RWTH Aachen University; Forckenbeckstr. 50 52074 Aachen Germany
| | - Ruben R. Rosencrantz
- Laboratory for Biomaterials; Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering; RWTH Aachen University; Pauwelsstr. 20 52074 Aachen Germany
| | - Lothar Elling
- Laboratory for Biomaterials; Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering; RWTH Aachen University; Pauwelsstr. 20 52074 Aachen Germany
| | - Alexander Böker
- DWI - Leibniz-Institut für Interaktive Materialien; Lehrstuhl für Makromolekulare Materialien und Oberflächen; RWTH Aachen University; Forckenbeckstr. 50 52074 Aachen Germany
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38
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Cascioferro S, Cusimano MG, Schillaci D. Antiadhesion agents against Gram-positive pathogens. Future Microbiol 2014; 9:1209-20. [DOI: 10.2217/fmb.14.56] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
ABSTRACT A fundamental step of Gram-positive pathogenesis is the bacterial adhesion to the host tissue involving interaction between bacterial surface molecules and host ligands. This review is focused on antivirulence compounds that target Gram-positive adhesins and on their potential development as therapeutic agents alternative or complementary to conventional antibiotics in the contrast of pathogens. In particular, compounds that target the sortase A, wall theicoic acid inhibitors, carbohydrates able to bind bacterial proteins and proteins capable of influencing the bacterial adhesion, were described. We further discuss the advantages and disadvantages of this strategy in the development of novel antimicrobials and the future perspective of this research field still at its first steps.
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Affiliation(s)
- Stella Cascioferro
- Department of Biological, Chemical & Pharmaceutical Science & Technology (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, Palermo, Italy
| | - Maria Grazia Cusimano
- Department of Biological, Chemical & Pharmaceutical Science & Technology (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, Palermo, Italy
| | - Domenico Schillaci
- Department of Biological, Chemical & Pharmaceutical Science & Technology (STEBICEF), Università degli Studi di Palermo, Via Archirafi 32, Palermo, Italy
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39
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Biggs CI, Edmondson S, Gibson MI. Thiol-ene immobilisation of carbohydrates onto glass slides as a simple alternative to gold-thiol monolayers, amines or lipid binding. Biomater Sci 2014. [PMID: 26214200 DOI: 10.1039/c4bm00176a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Carbohydrate arrays are a vital tool in studying infection, probing the mechanisms of bacterial, viral and toxin adhesion and the development of new treatments, by mimicking the structure of the glycocalyx. Current methods rely on the formation of monolayers of carbohydrates that have been chemically modified with a linker to enable interaction with a functionalised surface. This includes amines, biotin, lipids or thiols. Thiol-addition to gold to form self-assembled monolayers is perhaps the simplest method for immobilisation as thiolated glycans are readily accessible from reducing carbohydrates in a single step, but are limited to gold surfaces. Here we have developed a quick and versatile methodology which enables the use of thiolated carbohydrates to be immobilised as monolayers directly onto acrylate-functional glass slides via a 'thiol-ene'/Michael-type reaction. By combining the ease of thiol chemistry with glass slides, which are compatible with microarray scanners this offers a cost effective, but also useful method to assemble arrays.
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Affiliation(s)
- Caroline I Biggs
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK.
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40
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Gouin SG. Multivalent Inhibitors for Carbohydrate-Processing Enzymes: Beyond the “Lock-and-Key” Concept. Chemistry 2014; 20:11616-28. [DOI: 10.1002/chem.201402537] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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41
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Shetye GS, Singh N, Jia C, Nguyen CDK, Wang G, Luk YY. Specific Maltose Derivatives Modulate the Swarming Motility of Nonswarming Mutant and Inhibit Bacterial Adhesion and Biofilm Formation byPseudomonas aeruginosa. Chembiochem 2014; 15:1514-23. [DOI: 10.1002/cbic.201402093] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Indexed: 11/10/2022]
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42
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Car Ž, Hrenar T, Petrović Peroković V, Ribić R, Seničar M, Tomić S. MannosylatedN-Aryl Substituted 3-Hydroxypyridine-4-Ones: Synthesis, Hemagglutination Inhibitory Properties, and Molecular Modeling. Chem Biol Drug Des 2014; 84:393-401. [DOI: 10.1111/cbdd.12329] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 02/19/2014] [Accepted: 03/12/2014] [Indexed: 01/30/2023]
Affiliation(s)
- Željka Car
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Tomica Hrenar
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Vesna Petrović Peroković
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Rosana Ribić
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Mateja Seničar
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Srđanka Tomić
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
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43
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Zhang Q, Su L, Collins J, Chen G, Wallis R, Mitchell DA, Haddleton DM, Becer CR. Dendritic Cell Lectin-Targeting Sentinel-like Unimolecular Glycoconjugates To Release an Anti-HIV Drug. J Am Chem Soc 2014; 136:4325-32. [DOI: 10.1021/ja4131565] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Qiang Zhang
- Department
of Chemistry, University of Warwick, CV4 7AL Coventry, United Kingdom
| | - Lu Su
- State
Key Laboratory of Molecular Engineering of Polymers, Ministry of Education
and Department of Macromolecular Science, Fudan University, 220
Handan Road, Shanghai 200433, China
| | - Jennifer Collins
- Department
of Chemistry, University of Warwick, CV4 7AL Coventry, United Kingdom
| | - Guosong Chen
- State
Key Laboratory of Molecular Engineering of Polymers, Ministry of Education
and Department of Macromolecular Science, Fudan University, 220
Handan Road, Shanghai 200433, China
| | - Russell Wallis
- Department
of Biochemistry, University of Leicester, LE1 9HN Leicester, United Kingdom
| | - Daniel A. Mitchell
- Clinical
Sciences Research Laboratories, Warwick Medical School, University of Warwick, CV2 2DX Coventry, United Kingdom
| | - David M. Haddleton
- Department
of Chemistry, University of Warwick, CV4 7AL Coventry, United Kingdom
| | - C. Remzi Becer
- Department
of Chemistry, University of Warwick, CV4 7AL Coventry, United Kingdom
- School
of Engineering and Materials Science, Queen Mary University of London, Mile End Road, E1 4NS London, United Kingdom
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44
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Bini D, Russo L, Battocchio C, Natalello A, Polzonetti G, Doglia SM, Nicotra F, Cipolla L. Dendron Synthesis and Carbohydrate Immobilization on a Biomaterial Surface by a Double-Click Reaction. Org Lett 2014; 16:1298-301. [DOI: 10.1021/ol403476z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Davide Bini
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Laura Russo
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Chiara Battocchio
- Department
of Sciences, INSTM, CNISM and CISDiC, University Roma Tre, Via della Vasca
Navale 84, 00146 Rome, Italy
| | - Antonino Natalello
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Giovanni Polzonetti
- Department
of Sciences, INSTM, CNISM and CISDiC, University Roma Tre, Via della Vasca
Navale 84, 00146 Rome, Italy
| | - Silvia Maria Doglia
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Francesco Nicotra
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Laura Cipolla
- Department
of Biotechnology and Biosciences, University of Milan—Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
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45
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Krachler AM, Orth K. Targeting the bacteria-host interface: strategies in anti-adhesion therapy. Virulence 2014; 4:284-94. [PMID: 23799663 PMCID: PMC3710331 DOI: 10.4161/viru.24606] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Bacterial infections are a major cause of morbidity and mortality worldwide and are increasingly problematic to treat due to the rise in antibiotic-resistant strains. It becomes more and more challenging to develop new antimicrobials that are able to withstand the ever-increasing repertoire of bacterial resistance mechanisms. This necessitates the development of alternative approaches to prevent and treat bacterial infections. One of the first steps during bacterial infection is adhesion of the pathogen to host cells. A pathogen’s ability to colonize and invade host tissues strictly depends on this process. Thus, interference with adhesion (anti-adhesion therapy) is an efficient way to prevent or treat bacterial infections. As a basis to present different strategies to interfere with pathogen adhesion, this review briefly introduces general concepts of bacterial attachment to host cells. We further discuss advantages and disadvantages of anti-adhesion treatments and issues that are in need of improvement so as to make anti-adhesion compounds a more broadly applicable alternative to conventional antimicrobials.
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Affiliation(s)
- Anne Marie Krachler
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
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46
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Jones MW, Otten L, Richards SJ, Lowery R, Phillips DJ, Haddleton DM, Gibson MI. Glycopolymers with secondary binding motifs mimic glycan branching and display bacterial lectin selectivity in addition to affinity. Chem Sci 2014. [DOI: 10.1039/c3sc52982g] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Polymer architecture is exploited as an alternative to glycan synthesis to enhance selectivity towards pathogenic lectins.
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Affiliation(s)
- M. W. Jones
- Department of Chemistry
- University of Warwick
- Coventry, UK
| | - L. Otten
- Department of Chemistry
- University of Warwick
- Coventry, UK
| | - S.-J. Richards
- Department of Chemistry
- University of Warwick
- Coventry, UK
| | - R. Lowery
- Department of Chemistry
- University of Warwick
- Coventry, UK
| | - D. J. Phillips
- Department of Chemistry
- University of Warwick
- Coventry, UK
| | | | - M. I. Gibson
- Department of Chemistry
- University of Warwick
- Coventry, UK
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47
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Trinadh M, Kannan G, Rajasekhar T, Sesha Sainath AV, Dhayal M. Synthesis of glycopolymers at various pendant spacer lengths of glucose moiety and their effects on adhesion, viability and proliferation of osteoblast cells. RSC Adv 2014. [DOI: 10.1039/c4ra05436a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Glycopolymers with three different pendant alkyl chain lengths (0, 4 and 6) of conjugated glucose moieties were prepared by deacetylation of synthesized acetylated polymers and their in vitro responses with osteoblast cell adhesion, viability and proliferation were investigated. The increase in pendant spacer length of glucose moiety of the glycopolymer had enhanced cytocompatibility even at higher glycopolymer concentration.
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Affiliation(s)
- Mummuluri Trinadh
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007, India
| | - Govindaraj Kannan
- Clinical Research Facility
- CSIR-Center for Cellular and Molecular Biology
- Hyderabad 500007, India
| | - Tota Rajasekhar
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007, India
| | - Annadanam V. Sesha Sainath
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007, India
| | - Marshal Dhayal
- Clinical Research Facility
- CSIR-Center for Cellular and Molecular Biology
- Hyderabad 500007, India
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48
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Pera NP, Pieters RJ. Towards bacterial adhesion-based therapeutics and detection methods. MEDCHEMCOMM 2014. [DOI: 10.1039/c3md00346a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bacterial adhesion is an important first step towards bacterial infection and plays a role in colonization, invasion and biofilm formation.
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Affiliation(s)
- Núria Parera Pera
- Department of Medicinal Chemistry and Chemical Biology
- Utrecht Institute for Pharmaceutical Sciences
- Utrecht University
- 3508 TB Utrecht
- The Netherlands
| | - Roland J. Pieters
- Department of Medicinal Chemistry and Chemical Biology
- Utrecht Institute for Pharmaceutical Sciences
- Utrecht University
- 3508 TB Utrecht
- The Netherlands
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49
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Brissonnet Y, Ortiz Mellet C, Morandat S, Garcia Moreno MI, Deniaud D, Matthews SE, Vidal S, Šesták S, El Kirat K, Gouin SG. Topological Effects and Binding Modes Operating with Multivalent Iminosugar-Based Glycoclusters and Mannosidases. J Am Chem Soc 2013; 135:18427-35. [DOI: 10.1021/ja406931w] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yoan Brissonnet
- LUNAM Université, CEISAM, Chimie Et Interdisciplinarité,
Synthèse, Analyse, Modélisation, UMR CNRS 6230, UFR
des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Carmen Ortiz Mellet
- Departamento
de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Profesor García González no. 1, 41012 Sevilla, Spain
| | - Sandrine Morandat
- Laboratoire
de Génie Enzymatique et Cellulaire, FRE-CNRS 3580, Université de Technologie de Compiègne (UTC), BP 20529, 60205 Compiègne Cedex, France
| | - M. Isabel Garcia Moreno
- Departamento
de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Profesor García González no. 1, 41012 Sevilla, Spain
| | - David Deniaud
- LUNAM Université, CEISAM, Chimie Et Interdisciplinarité,
Synthèse, Analyse, Modélisation, UMR CNRS 6230, UFR
des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Susan E. Matthews
- School
of Pharmacy, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
| | - Sébastien Vidal
- Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires,
Laboratoire de Chimie Organique 2 Glycochimie, UMR 5246, CNRS, Université Claude Bernard Lyon 1, F-69622 Villeurbanne, France
| | - Sergej Šesták
- Institute
of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravska cesta 9, 845 38 Bratislava, Slovakia
| | - Karim El Kirat
- Laboratoire
de Biomécanique et Bioingénierie, UMR-CNRS 7338, Université de Technologie de Compiègne (UTC), BP 20529, 60205 Compiègne Cedex, France
| | - Sébastien G. Gouin
- LUNAM Université, CEISAM, Chimie Et Interdisciplinarité,
Synthèse, Analyse, Modélisation, UMR CNRS 6230, UFR
des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
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50
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RAFT-based tri-component fluorescent glycopolymers: synthesis, characterization and application in lectin-mediated bacterial binding study. Glycoconj J 2013; 31:133-43. [PMID: 24218180 PMCID: PMC3901943 DOI: 10.1007/s10719-013-9508-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 09/30/2013] [Accepted: 10/28/2013] [Indexed: 01/08/2023]
Abstract
A group of fluorescent statistical glycopolymers, prepared via reversible addition–fragmentation chain-transfer (RAFT)-based polymerizations, were successfully employed in lectin-mediated bacterial binding studies. The resultant glycopolymers contained three different monomers: N-(2-hydroxyethyl) acrylamide (HEAA), N-(2-aminoethyl) methacrylamide (AEMA) and N-(2-glyconamidoethyl)-methacrylamides possessing different pendant sugars. Low dispersities (≤1.32) and predictable degrees of polymerization were observed among the products. After the polymerization, the glycopolymers were further modified by different succinimidyl ester fluorophores targeting the primary amine groups on AEMA. With their binding specificities being confirmed by testing with lectin coated agarose beads, the glycopolymers were employed in bacterial binding studies, where polymers containing α-galactose or β-galactose as the pendant sugar were specifically bound by two clinically important pathogens Pseudomonas aeruginosa and Staphylococcus aureus, respectively. This is the first report of using RAFT-based glycopolymers in bacterial binding studies, and the ready access to tri-component statistical glycopolymers also warrants further exploration of their utility in other glycobiological applications.
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