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Parija I, Yadav S, Jayaraman N. Con A lectin binding by synthetic bivalent arabinomannan tri- and pentasaccharides reveals connectivity-dependent functional valencies. Carbohydr Res 2024; 536:109050. [PMID: 38335804 DOI: 10.1016/j.carres.2024.109050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/13/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
Lectin Con A, with specificity to interact with α-d-mannopyranoside, achieves tight binding affinity with the aid of optimal multivalent ligand valencies, distances and orientations between the ligands. A series of synthetic arabinomannans, possessing arabinan core and mannan at the non-reducing ends, is studied to assess the above constraints involved with lectin binding in this report. Trisaccharides, with (1 → 2)(1 → 3), (1 → 2)(1 → 5) and (1 → 3)(1 → 5) glycosidic bond connectivities, and a pentasaccharide with mannopyranosides at the non-reducing ends are synthesized. The binding affinities of the mannose bivalent ligands are studied with tetrameric Con A lectin by isothermal titration calorimetry (ITC). Among the derivatives, trisaccharide with (1 → 2)(1 → 3) glycosidic bond connectivity and the pentasaccharide undergo lectin interaction, clearly fulfilling the bivalent structural and functional valencies. Remaining oligosaccharides exhibit only a functional monovalency, defying the bivalent structural valency. The trisaccharide fulfilling the structural and functional valencies represent the smallest bivalent ligand, undergoing the lectin interaction in a trans-mode.
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Affiliation(s)
- Ipsita Parija
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
| | - Shivender Yadav
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
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Zhou Y, Huang J, Wang G, Zhai Z, Ahmed MU, Xia X, Liu C, Jin Y, Pan X, Huang Y, Wu C, Zhang X. Polymyxin B sulfate inhalable microparticles with high-lectin-affinity sugar carriers for efficient treatment of biofilm-associated pulmonary infections. Sci Bull (Beijing) 2023; 68:3225-3239. [PMID: 37973467 DOI: 10.1016/j.scib.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/29/2023] [Accepted: 10/30/2023] [Indexed: 11/19/2023]
Abstract
Pulmonary infections caused by multidrug-resistant bacteria have become a significant threat to human health. Bacterial biofilms exacerbate the persistence and recurrence of pulmonary infections, hindering the accessibility and effectiveness of antibiotics. In this study, a dry powder inhalation (DPI) consisting of polymyxin B sulfate (PMBS) inhalable microparticles and high-lectin-affinity (HLA) sugar (i.e., raffinose) carriers was developed for treating pulmonary infections and targeting bacterial lectins essential for biofilm growth. The formulated PMBS-HLA DPIs exhibited particle sizes of approximately 3 μm, and surface roughness varied according to the drug-to-carrier ratio. Formulation F5 (PMBS: raffinose = 10:90) demonstrated the highest fine particle fraction (FPF) value (64.86%), signifying its substantially enhanced aerosol performance, potentially attributable to moderate roughness and smallest mass median aerodynamic particle size. The efficacy of PMBS-HLA DPIs in inhibiting biofilm formation and eradicating mature biofilms was significantly improved with the addition of raffinose, suggesting the effectiveness of lectin-binding strategy for combating bacterial biofilm-associated infections. In rat models with acute and chronic pulmonary infections, F5 demonstrated superior bacterial killing and amelioration of inflammatory responses compared to spray-dried PMBS (F0). In conclusion, our HLA carrier-based formulation presents considerable potential for the efficient treatment of multidrug-resistant bacterial biofilm-associated pulmonary infections.
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Affiliation(s)
- Yue Zhou
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China
| | - Jiayuan Huang
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Guanlin Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Zizhao Zhai
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China
| | - Maizbha Uddin Ahmed
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette IN 47907, USA
| | - Xiao Xia
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China
| | - Cenfeng Liu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China
| | - Yuzhen Jin
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ying Huang
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China.
| | - Chuanbin Wu
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China
| | - Xuejuan Zhang
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou 510006, China; College of Pharmacy, Jinan University, Guangzhou 510006, China.
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Garg P, Priyadarshi N, Ambule MD, Kaur G, Kaul S, Gupta R, Sagar P, Bajaj G, Yadav B, Rishi V, Goyal B, Srivastava AK, Singhal NK. Multiepitope glycan based laser assisted fluorescent nanocomposite with dual functionality for sensing and ablation of Pseudomonas aeruginosa. NANOSCALE 2023; 15:15179-15195. [PMID: 37548288 DOI: 10.1039/d3nr02983b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Pseudomonas aeruginosa (P. aeruginosa) infection is becoming a severe health hazard and needs early diagnosis with high specificity. However, the non-specific binding of a biosensor is a challenge to the current bacterial detection system. For the first time, we chemically synthesized a galactose tripod (GT) as a P. aeruginosa-specific ligand. We conjugated GT to a photothermally active fluorescent nanocomposite (Au@SiO2-TCPP). P. aeruginosa can be detected using Au@SiO2-TCPP-GT, and additionally ablated as well using synergistic photothermal and photodynamic therapy. Molecular dynamics and simulation studies suggested better binding of GT (binding energy = -6.6 kcal mol-1) with P. aeruginosa lectin than that of galactose monopod (GM) (binding energy = -5.9 kcal mol-1). Furthermore, a binding study was extended to target P. aeruginosa, which has a galactose-binding carbohydrate recognition domain receptor. The colorimetric assay confirmed a limit of detection (LOD) of 104 CFU mL-1. We also looked into the photosensitizing property of Au@SiO2-TCPP-GT, which is stimulated by laser light (630 nm) and causes photoablation of bacteria by the formation of singlet oxygen in the surrounding media. The cytocompatibility of Au@SiO2-TCPP-GT was confirmed using cytotoxicity assays on mammalian cell lines. Moreover, Au@SiO2-TCPP-GT also showed non-hemolytic activity. Considering the toxicity analysis and efficacy of the synthesized glycan nanocomposites, these can be utilized for the treatment of P. aeruginosa-infected wounds. Furthermore, the current glycan nanocomposites can be used for bacterial detection and ablation of P. aeruginosa in contaminated food and water samples as well.
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Affiliation(s)
- Priyanka Garg
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
- Department of Biotechnology, Panjab University, Sector 25, Chandigarh, 160014, India
| | - Nitesh Priyadarshi
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
| | - Mayur D Ambule
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India.
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Gurmeet Kaur
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, India.
| | - Sunaina Kaul
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
- Department of Biotechnology, Panjab University, Sector 25, Chandigarh, 160014, India
| | - Ritika Gupta
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
| | - Poonam Sagar
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
| | - Geetika Bajaj
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
- Department of Biotechnology, Panjab University, Sector 25, Chandigarh, 160014, India
| | - Binduma Yadav
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
- Regional Center for Biotechnology (RCB), Faridabad, 121001, India
| | - Vikas Rishi
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
| | - Bhupesh Goyal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, India.
| | - Ajay Kumar Srivastava
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India.
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Nitin Kumar Singhal
- National Agri-Food Biotechnology Institute (NABI), Sector-81, S.A.S. Nagar, Mohali, Punjab, India.
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Zaree P, Tomris I, de Vos SD, van der Woude R, Flesch FM, Klein Gebbink RJM, de Vries RP, Pieters RJ. Facile electrochemical affinity measurements of small and large molecules. RSC Adv 2023; 13:9756-9760. [PMID: 36994086 PMCID: PMC10041147 DOI: 10.1039/d3ra01029e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/16/2023] [Indexed: 03/29/2023] Open
Abstract
A novel miniaturized sensor for electrochemical detection that contains graphene- and gold nanoparticles was functionalized with proteins. Using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) it was possible to observe and quantify interactions of molecules with these proteins. The protein binders included carbohydrate ligands as small as carbohydrates up to COVID-19 spike protein variants engaged in protein-protein interactions. The system uses off-the-shelf sensors combined with an affordable potentiostat and yet is sensitive enough for small ligand binding.
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Affiliation(s)
- Pouya Zaree
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University P. O. Box 80082 NL-3508 TB Utrecht The Netherlands
| | - Ilhan Tomris
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University P. O. Box 80082 NL-3508 TB Utrecht The Netherlands
| | - Sander D de Vos
- Institute for Sustainable and Circular Chemistry, Debye Institute for Nanomaterials Science, Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Roosmarijn van der Woude
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University P. O. Box 80082 NL-3508 TB Utrecht The Netherlands
| | - Frits M Flesch
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University P. O. Box 80082 NL-3508 TB Utrecht The Netherlands
| | - Robertus J M Klein Gebbink
- Institute for Sustainable and Circular Chemistry, Debye Institute for Nanomaterials Science, Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Robert P de Vries
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University P. O. Box 80082 NL-3508 TB Utrecht The Netherlands
| | - Roland J Pieters
- Department of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University P. O. Box 80082 NL-3508 TB Utrecht The Netherlands
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Duca M, Haksar D, van Neer J, Thies-Weesie DM, Martínez-Alarcón D, de Cock H, Varrot A, Pieters RJ. Multivalent Fucosides Targeting β-Propeller Lectins from Lung Pathogens with Promising Anti-Adhesive Properties. ACS Chem Biol 2022; 17:3515-3526. [PMID: 36414265 PMCID: PMC9764287 DOI: 10.1021/acschembio.2c00708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Fungal and bacterial pathogens causing lung infections often use lectins to mediate adhesion to glycoconjugates at the surface of host tissues. Given the rapid emergence of resistance to the treatments in current use, β-propeller lectins such as FleA from Aspergillus fumigatus, SapL1 from Scedosporium apiospermum, and BambL from Burkholderia ambifaria have become appealing targets for the design of anti-adhesive agents. In search of novel and cheap anti-infectious agents, we synthesized multivalent compounds that can display up to 20 units of fucose, the natural ligand. We obtained nanomolar inhibitors that are several orders of magnitude stronger than their monovalent analogue according to several biophysical techniques (i.e., fluorescence polarization, isothermal titration calorimetry, and bio-layer interferometry). The reason for high affinity might be attributed to a strong aggregating mechanism, which was examined by analytical ultracentrifugation. Notably, the fucosylated inhibitors reduced the adhesion of A. fumigatus spores to lung epithelial cells when administered 1 h before or after the infection of human lung epithelial cells. For this reason, we propose them as promising anti-adhesive drugs for the prevention and treatment of aspergillosis and related microbial lung infections.
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Affiliation(s)
- Margherita Duca
- Department
of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical
Sciences, Utrecht University, NL-3508 TB Utrecht, The Netherlands,Department
of Biology, Utrecht University, Padualaan 8, 3584 CS Utrecht, The Netherlands,Univ.
Grenoble Alpes, CNRS, CERMAV, 38000 Grenoble, France
| | - Diksha Haksar
- Department
of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical
Sciences, Utrecht University, NL-3508 TB Utrecht, The Netherlands
| | - Jacq van Neer
- Department
of Biology, Utrecht University, Padualaan 8, 3584 CS Utrecht, The Netherlands
| | - Dominique M.E. Thies-Weesie
- Debye
Institute for Nanomaterials Science, Utrecht
University, Padualaan
8, 3584 CS Utrecht, The Netherlands
| | | | - Hans de Cock
- Department
of Biology, Utrecht University, Padualaan 8, 3584 CS Utrecht, The Netherlands,
| | | | - Roland J. Pieters
- Department
of Chemical Biology & Drug Discovery, Utrecht Institute for Pharmaceutical
Sciences, Utrecht University, NL-3508 TB Utrecht, The Netherlands,
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Osswald U, Boneberg J, Wittmann V. Photoswitching Affinity and Mechanism of Multivalent Lectin Ligands. Chemistry 2022; 28:e202200267. [PMID: 35286724 PMCID: PMC9325471 DOI: 10.1002/chem.202200267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Indexed: 11/09/2022]
Abstract
Multivalent receptor–ligand binding is a key principle in a plethora of biological recognition processes. Immense binding affinities can be achieved with the correct spatial orientation of the ligands. Accordingly, the incorporation of photoswitches, which can be used to reversibly change the spatial orientation of molecules, into multivalent ligands is a means to alter the binding affinity and possibly also the binding mode of such ligands. We report a divalent ligand for the model lectin wheat germ agglutinin (WGA) containing an arylazopyrazole photoswitch. This switch, which has recently been introduced as an alternative to the more commonly used azobenzene moiety, is characterized by almost quantitative E/Z photoswitching in both directions, high quantum yields, and high thermal stability of the Z isomer. The ligand was designed in a way that only one of the isomers is able to bridge adjacent binding sites of WGA leading to a chelating binding mode. Photoswitching induces an unprecedentedly high change in lectin binding affinity as determined by isothermal titration calorimetry (ITC). Furthermore, additional dynamic light scattering (DLS) data suggest that the binding mode of the ligand changes from chelating binding of the E isomer to crosslinking binding of the Z isomer.
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Affiliation(s)
- Uwe Osswald
- Department of ChemistryUniversity of Konstanz78457KonstanzGermany
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