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Kannaujiya VK, Qiao Y, Sheikh RH, Xue J, Dargaville TR, Liang K, Wich PR. pH-Responsive Micellar Nanoparticles for the Delivery of a Self-Amplifying ROS-Activatable Prodrug. Biomacromolecules 2024; 25:1775-1789. [PMID: 38377594 DOI: 10.1021/acs.biomac.3c01240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The objective of this study is to enhance the therapeutic efficacy of the anticancer drug, camptothecin (CPT) via a nanoparticle (NP) formulation using a novel amphiphilic biopolymer. We have designed a dimeric prodrug of CPT with the ability to self-amplify and respond to reactive oxygen species (ROS). For this, we incorporated the intracellular ROS generator cinnamaldehyde into a ROS-cleavable thioacetal (TA) linker to obtain the dimeric prodrug of CPT (DCPT(TA)). For its efficient NP delivery, a pH-responsive block copolymer of acetalated dextran and poly(2-ethyl-2-oxazoline) (AcDex-b-PEOz) was synthesized. The amphiphilic feature of the block copolymer enables its self-assembly into micellar NPs and results in high prodrug loading capacity and a rapid release of the prodrug under acidic conditions. Upon cellular uptake by HeLa cells, DCPT(TA)-loaded micellar NPs induce intracellular ROS generation, resulting in accelerated prodrug activation and enhanced cytotoxicity. These results indicate that this system holds significant potential as an effective prodrug delivery strategy in anticancer treatment.
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Affiliation(s)
- Vinod K Kannaujiya
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Yijie Qiao
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Rakib H Sheikh
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Jueyi Xue
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Tim R Dargaville
- ARC Centre for Cell & Tissue Engineering Technologies, QUT Centre for Materials Science, School of Chemistry and Physics, Faculty of Science, Queensland University of Technology (QUT), Brisbane 4000, Australia
| | - Kang Liang
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Peter R Wich
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
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2
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Kaltbeitzel J, Wich PR. Protein-based Nanoparticles: From Drug Delivery to Imaging, Nanocatalysis and Protein Therapy. Angew Chem Int Ed Engl 2023; 62:e202216097. [PMID: 36917017 DOI: 10.1002/anie.202216097] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 03/16/2023]
Abstract
Proteins and enzymes are versatile biomaterials for a wide range of medical applications due to their high specificity for receptors and substrates, high degradability, low toxicity, and overall good biocompatibility. Protein nanoparticles are formed by the arrangement of several native or modified proteins into nanometer-sized assemblies. In this review, we will focus on artificial nanoparticle systems, where proteins are the main structural element and not just an encapsulated payload. While under natural conditions, only certain proteins form defined aggregates and nanoparticles, chemical modifications or a change in the physical environment can further extend the pool of available building blocks. This allows the assembly of many globular proteins and even enzymes. These advances in preparation methods led to the emergence of new generations of nanosystems that extend beyond transport vehicles to diverse applications, from multifunctional drug delivery to imaging, nanocatalysis and protein therapy.
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Affiliation(s)
- Jonas Kaltbeitzel
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Peter R Wich
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
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3
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Konhäuser M, Kannaujiya VK, Kaltbeitzel J, Winterwerber P, Böhm E, Breitenbach B, Wich PR. Dual-Responsive Enzyme-Polysaccharide Conjugate as a Nanocarrier System for Enzyme Prodrug Therapy. Biomacromolecules 2023; 24:2138-2148. [PMID: 37079077 DOI: 10.1021/acs.biomac.3c00031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
Biopolymer-based drug delivery systems have gained considerable attention in the field of nanomedicine. In this study, a protein-polysaccharide conjugate was synthesized by covalent conjugation of the enzyme horseradish peroxidase (HRP) with acetalated dextran (AcDex) via a thiol exchange reaction. The resulting bioconjugate shows a dual-responsive behavior in acidic and reductive environments to achieve a controlled release of drugs. The self-assembly of this amphiphilic HRP-AcDex conjugate allows the encapsulation of prodrug indole-3-acetic acid (IAA) into the hydrophobic polysaccharide core. Under slightly acidic conditions, the acetalated polysaccharide reverts to its native hydrophilic form, which triggers the disassembly of micellar nanoparticles and the release of the encapsulated prodrug. The conjugated HRP further activates the prodrug by oxidation of IAA into cytotoxic radicals, which leads to cellular apoptosis. The results indicate that the HRP-AcDex conjugate in combination with IAA has great potential to be used as a novel enzyme prodrug therapy for cancer treatment.
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Affiliation(s)
- Matthias Konhäuser
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - Vinod Kumar Kannaujiya
- School of Chemical Engineering, University of New South Wales, Science and Engineering Building, Sydney, NSW 2052, Australia
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jonas Kaltbeitzel
- School of Chemical Engineering, University of New South Wales, Science and Engineering Building, Sydney, NSW 2052, Australia
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Pia Winterwerber
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - Elena Böhm
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - Benjamin Breitenbach
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - Peter R Wich
- School of Chemical Engineering, University of New South Wales, Science and Engineering Building, Sydney, NSW 2052, Australia
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
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4
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Konhäuser M, Kannaujiya VK, Steiert E, Schwickert K, Schirmeister T, Wich PR. Co-Encapsulation of l-Asparaginase and Etoposide in Dextran Nanoparticles for Synergistic Effect in Chronic Myeloid Leukemia Cells. Int J Pharm 2022; 622:121796. [PMID: 35525474 DOI: 10.1016/j.ijpharm.2022.121796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 04/02/2022] [Accepted: 04/29/2022] [Indexed: 11/17/2022]
Abstract
Co-encapsulation of multiple therapeutic drugs in a single nanocarrier has the potential to enable synergistic interactions, increase drug efficacy, and reduce side effects. The enzyme l-asparaginase and the small molecule drug etoposide have a known synergistic effect against selected cancer types. However, both drugs differ significantly in size, molecular weight, and solubility, which often results in challenges when a simultaneous delivery is required. In this study, we present the co-encapsulation of a large hydrophilic enzyme l-asparaginase and the small hydrophobic drug etoposide into a biodegradable, biocompatible, and acid-responsive dextran-based nanoparticle system. These dual drug-loaded nanoparticles show an excellent cellular uptake in chronic myeloid leukemia (CML) K562 cells and a stepwise release of the cytotoxic payloads in a pH-dependent manner. In activity tests, the dual drug-loaded formulation has shown a significant effect on cell viability (down to 31%) compared to those incubated only with l-asparaginase (92%) or etoposide (82%) at a particle concentration of 125 μg∙mL-1. These results show that the simultaneous co-delivery of these two drugs in K562 cells leads to synergistic cytotoxicity, indicating a great potential for the treatment of CML.
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Affiliation(s)
- M Konhäuser
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - V K Kannaujiya
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia; Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - E Steiert
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - K Schwickert
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - T Schirmeister
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - P R Wich
- Institute of Pharmaceutical and Biomedicinal Sciences, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz 55128, Germany; School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia; Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia.
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5
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Manikkath J, Jishnu PV, Wich PR, Manikkath A, Radhakrishnan R. Nanoparticulate strategies for the delivery of miRNA mimics and inhibitors in anticancer therapy and its potential utility in oral submucous fibrosis. Nanomedicine (Lond) 2022; 17:181-195. [PMID: 35014880 DOI: 10.2217/nnm-2021-0381] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) are naturally occurring noncoding RNAs with multiple functionalities. They are dysregulated in several conditions and can serve as disease biomarkers, therapeutic targets and therapeutic agents. Translation of miRNA therapeutics to the clinic poses several challenges related to the safe and effective delivery of these agents to the site of action. Nanoparticulate carriers hold promise in this area by enhancing targeting efficiency and reducing off-target effects. This paper reviews recent advances in the delivery strategies of miRNAs in anticancer therapy, with a focus on lipid-based, polymeric, inorganic platforms, cell membrane-derived vesicles and bacterial minicells. Additionally, this review explores the potentiality of miRNAs in the treatment of oral submucous fibrosis, a potentially premalignant condition of the oral cavity with no definitive treatment to date.
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Affiliation(s)
- Jyothsna Manikkath
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Padacherri Vethil Jishnu
- Department of Cell & Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Peter R Wich
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Aparna Manikkath
- Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, CA 94103, USA
| | - Raghu Radhakrishnan
- Department of Oral Pathology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
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Allam VSRR, Chellappan DK, Jha NK, Shastri MD, Gupta G, Shukla SD, Singh SK, Sunkara K, Chitranshi N, Gupta V, Wich PR, MacLoughlin R, Oliver BGG, Wernersson S, Pejler G, Dua K. Treatment of chronic airway diseases using nutraceuticals: Mechanistic insight. Crit Rev Food Sci Nutr 2021; 62:7576-7590. [PMID: 33977840 DOI: 10.1080/10408398.2021.1915744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Respiratory diseases, both acute and chronic, are reported to be the leading cause of morbidity and mortality, affecting millions of people globally, leading to high socio-economic burden for the society in the recent decades. Chronic inflammation and decline in lung function are the common symptoms of respiratory diseases. The current treatment strategies revolve around using appropriate anti-inflammatory agents and bronchodilators. A range of anti-inflammatory agents and bronchodilators are currently available in the market; however, the usage of such medications is limited due to the potential for various adverse effects. To cope with this issue, researchers have been exploring various novel, alternative therapeutic strategies that are safe and effective to treat respiratory diseases. Several studies have been reported on the possible links between food and food-derived products in combating various chronic inflammatory diseases. Nutraceuticals are examples of such food-derived products which are gaining much interest in terms of its usage for the well-being and better human health. As a consequence, intensive research is currently aimed at identifying novel nutraceuticals, and there is an emerging notion that nutraceuticals can have a positive impact in various respiratory diseases. In this review, we discuss the efficacy of nutraceuticals in altering the various cellular and molecular mechanisms involved in mitigating the symptoms of respiratory diseases.
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Affiliation(s)
- Venkata Sita Rama Raju Allam
- Department of Medical Biochemistry and Microbiology, Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University (IMU), Kuala Lumpur, Malaysia
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, Uttar Pradesh, India
| | - Madhur D Shastri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, Australia
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Jaipur, India
| | - Shakti D Shukla
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI), University of Newcastle, New Lambton Heights, Newcastle, New South Wales, Australia
| | - Sachin K Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Krishna Sunkara
- Emergency Clinical Management, Intensive Care Unit, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Nitin Chitranshi
- Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, New South Wales, Australia
| | - Vivek Gupta
- Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, New South Wales, Australia
| | - Peter R Wich
- School of Chemical Engineering, University of New South Wales, Sydney, New South Wales, Australia.,Centre for Nanomedicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Ronan MacLoughlin
- Aerogen, IDA Business Park, Dangan, Galway, Ireland.,School of Pharmacy & Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland.,School of Pharmacy and Pharmaceutical Sciences, Trinity College, Dublin, Ireland
| | - Brian Gregory George Oliver
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, Australia.,Woolcock Institute of Medical Research, The University of Sydney, Sydney, Australia
| | - Sara Wernersson
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Biomedical Centre (BMC), Uppsala University, Uppsala, Sweden.,Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, Australia
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7
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Mehta M, Satija S, Paudel KR, Malyla V, Kannaujiya VK, Chellappan DK, Bebawy M, Hansbro PM, Wich PR, Dua K. Targeting respiratory diseases using miRNA inhibitor based nanotherapeutics: Current status and future perspectives. Nanomedicine 2020; 31:102303. [PMID: 32980549 DOI: 10.1016/j.nano.2020.102303] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 12/24/2022]
Abstract
MicroRNAs (miRNAs) play a fundamental role in the developmental and physiological processes that occur in both animals and plants. AntagomiRs are synthetic antagonists of miRNA, which prevent the target mRNA from suppression. Therapeutic approaches that modulate miRNAs have immense potential in the treatment of chronic respiratory disorders. However, the successful delivery of miRNAs/antagomiRs to the lungs remains a major challenge in clinical applications. A range of materials, namely, polymer nanoparticles, lipid nanocapsules and inorganic nanoparticles, has shown promising results for intracellular delivery of miRNA in chronic respiratory disorders. This review discusses the current understanding of miRNA biology, the biological roles of antagomiRs in chronic respiratory disease and the recent advances in the therapeutic utilization of antagomiRs as disease biomarkers. Furthermore our review provides a common platform to debate on the nature of antagomiRs and also addresses the viewpoint on the new generation of delivery systems that target antagomiRs in respiratory diseases.
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Affiliation(s)
- Meenu Mehta
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW, Australia; Centre for Inflammation, Centenary Institute, Sydney, NSW, Australia
| | - Saurabh Satija
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW, Australia; School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Keshav R Paudel
- Centre for Inflammation, Centenary Institute, Sydney, NSW, Australia; School of Life Sciences, University of Technology Sydney, Ultimo, NSW, Australia
| | - Vamshikrishna Malyla
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW, Australia; Centre for Inflammation, Centenary Institute, Sydney, NSW, Australia
| | | | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur, Malaysia
| | - Mary Bebawy
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW, Australia
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute, Sydney, NSW, Australia; School of Life Sciences, University of Technology Sydney, Ultimo, NSW, Australia
| | - Peter R Wich
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia; Centre for Nanomedicine, University of New South Wales, Sydney, NSW, Australia
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW, Australia; Centre for Inflammation, Centenary Institute, Sydney, NSW, Australia; Priority Research Centre for Healthy Lungs, University of Newcastle & Hunter Medical Research Institute, New Lambton Heights, Newcastle, NSW, Australia; School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, India.
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8
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Rao NRH, Granville AM, Wich PR, Henderson RK. Detailed algal extracellular carbohydrate-protein characterisation lends insight into algal solid-liquid separation process outcomes. Water Res 2020; 178:115833. [PMID: 32339864 DOI: 10.1016/j.watres.2020.115833] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/04/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
The effectiveness of algal solid-liquid separation processes has been impacted by the strong influence of algal extracellular organic matter (EOM), where the composition of proteins and carbohydrates and their associated interactions have been implicated. However, despite this, no studies have analysed the detailed protein and carbohydrate composition in EOM in relation to their impacts on separation. Hence, the aim of this study was to explore the relationship between the variety of carbohydrates and proteins present in the EOM of select algal and cyanobacterial samples and the associated separation performance to better understand the influence of specific biopolymers. The protein and carbohydrate composition of the EOM of three species - Microcystis aeruginosa CS-555/1, Chlorella vulgaris CS-42/7 and Microcystis aeruginosa CS-564/01, previously observed to result in variable treatment performance were investigated. The carbohydrates were analysed via high-performance anion-exchange chromatography (HPAEC) with pulsed amperometric detection (PAD) while the proteins were analysed using sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) combined with liquid chromatography-mass spectrometry (LC-MS). Ten unique monosaccharides were identified; of these, the greatest proportion of charged uronic acid carbohydrates were present in the EOM of M. aeruginosa CS-564/01. The protein profiling revealed that M. aeruginosa CS-564/01 had a greater proportion and concentration of proteins >75 kDa when compared to M. aeruginosa CS-555/1 or C. vulgaris CS-42/7. It was determined that three serine- and two threonine-based proteins, detected in greater concentrations in M. aeruginosa CS-564/01 than CS-555/1, could covalently interact with carbohydrates (OHenderson et al., 2010a, 2010b-linked glycosylation). These proteins have the ability to form numerous localised networks with carbohydrates and cells in the presence of coagulant molecules, thereby providing a good hypothesis to explain the excellent treatment performance observed for M. aeruginosa CS-564/01 previously. It is proposed that the uronic acids in M. aeruginosa CS-564/01 could interact with proteins via glycosylation, explaining why the coagulant demand for this strain remained low despite the high charged carbohydrate concentration. Overall, it is proposed that process performance could be impacted by: (a) physicochemical characteristics and (b) carbohydrate-protein interactions.
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Affiliation(s)
- N R H Rao
- Algae and Organic Matter Laboratory (AOM Lab), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia; Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - A M Granville
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - P R Wich
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - R K Henderson
- Algae and Organic Matter Laboratory (AOM Lab), School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
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Barthels F, Marincola G, Marciniak T, Konhäuser M, Hammerschmidt S, Bierlmeier J, Distler U, Wich PR, Tenzer S, Schwarzer D, Ziebuhr W, Schirmeister T. Asymmetric Disulfanylbenzamides as Irreversible and Selective Inhibitors of Staphylococcus aureus Sortase A. ChemMedChem 2020; 15:839-850. [PMID: 32118357 PMCID: PMC7318353 DOI: 10.1002/cmdc.201900687] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/07/2020] [Indexed: 12/19/2022]
Abstract
Staphylococcus aureus is one of the most frequent causes of nosocomial and community-acquired infections, with drug-resistant strains being responsible for tens of thousands of deaths per year. S. aureus sortase A inhibitors are designed to interfere with virulence determinants. We have identified disulfanylbenzamides as a new class of potent inhibitors against sortase A that act by covalent modification of the active-site cysteine. A broad series of derivatives were synthesized to derive structure-activity relationships (SAR). In vitro and in silico methods allowed the experimentally observed binding affinities and selectivities to be rationalized. The most active compounds were found to have single-digit micromolar Ki values and caused up to a 66 % reduction of S. aureus fibrinogen attachment at an effective inhibitor concentration of 10 μM. This new molecule class exhibited minimal cytotoxicity, low bacterial growth inhibition and impaired sortase-mediated adherence of S. aureus cells.
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Affiliation(s)
- Fabian Barthels
- Institute for Pharmacy and BiochemistryJohannes-Gutenberg-University of MainzStaudinger Weg 555128MainzGermany
| | - Gabriella Marincola
- Institute for Molecular Infection BiologyJulius-Maximilians-University of WürzburgJosef-Schneider-Strasse 297080WürzburgGermany
| | - Tessa Marciniak
- Institute for Molecular Infection BiologyJulius-Maximilians-University of WürzburgJosef-Schneider-Strasse 297080WürzburgGermany
| | - Matthias Konhäuser
- Institute for Pharmacy and BiochemistryJohannes-Gutenberg-University of MainzStaudinger Weg 555128MainzGermany
| | - Stefan Hammerschmidt
- Institute for Pharmacy and BiochemistryJohannes-Gutenberg-University of MainzStaudinger Weg 555128MainzGermany
| | - Jan Bierlmeier
- Interfaculty Institute of BiochemistryEberhard-Karls-University of TübingenHoppe-Seyler-Strasse 472076TübingenGermany
| | - Ute Distler
- Institute for ImmunologyUniversity Medical CenterJohannes-Gutenberg-University of MainzLangenbeckstr. 155131MainzGermany
- Focus Program Translational Neuroscience (FTN)University Medical CenterLangenbeckstr. 155131MainzGermany
| | - Peter R. Wich
- Institute for Pharmacy and BiochemistryJohannes-Gutenberg-University of MainzStaudinger Weg 555128MainzGermany
- School of Chemical EngineeringUniversity of New South WalesScience and Engineering BuildingSydneyNSW 2052Australia
| | - Stefan Tenzer
- Institute for ImmunologyUniversity Medical CenterJohannes-Gutenberg-University of MainzLangenbeckstr. 155131MainzGermany
| | - Dirk Schwarzer
- Interfaculty Institute of BiochemistryEberhard-Karls-University of TübingenHoppe-Seyler-Strasse 472076TübingenGermany
| | - Wilma Ziebuhr
- Institute for Molecular Infection BiologyJulius-Maximilians-University of WürzburgJosef-Schneider-Strasse 297080WürzburgGermany
| | - Tanja Schirmeister
- Institute for Pharmacy and BiochemistryJohannes-Gutenberg-University of MainzStaudinger Weg 555128MainzGermany
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10
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Steiert E, Ewald J, Wagner A, Hellmich UA, Frey H, Wich PR. pH-Responsive protein nanoparticlesviaconjugation of degradable PEG to the surface of cytochromec. Polym Chem 2020. [DOI: 10.1039/c9py01162e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A protein nanoparticle system based on cytochromecwas modified with acid-degradable polyethylene glycol (PEGylation). Vinyl ether moieties distributed in the polyether backbone, enabled particle degradation at slightly acidic pH.
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Affiliation(s)
- Elena Steiert
- Institute of Pharmacy und Biochemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
| | - Johannes Ewald
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
| | - Annika Wagner
- Institute of Pharmacy und Biochemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
| | - Ute A. Hellmich
- Institute of Pharmacy und Biochemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
| | - Holger Frey
- Institute of Organic Chemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
| | - Peter R. Wich
- Institute of Pharmacy und Biochemistry
- Johannes Gutenberg-University Mainz
- 55128 Mainz
- Germany
- Australian Centre for NanoMedicine
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11
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Butzbach K, Konhäuser M, Fach M, Bamberger DN, Breitenbach B, Epe B, Wich PR. Receptor-mediated Uptake of Folic Acid-functionalized Dextran Nanoparticles for Applications in Photodynamic Therapy. Polymers (Basel) 2019; 11:polym11050896. [PMID: 31100893 PMCID: PMC6572481 DOI: 10.3390/polym11050896] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/30/2019] [Accepted: 05/10/2019] [Indexed: 01/26/2023] Open
Abstract
In photodynamic therapy (PDT), photosensitizers and light are used to cause photochemically induced cell death. The selectivity and the effectiveness of the phototoxicity in cancer can be increased by a specific uptake of the photosensitizer into tumor cells. A promising target for this goal is the folic acid receptor α (FRα), which is overexpressed on the surface of many tumor cells and mediates an endocytotic uptake. Here, we describe a polysaccharide-based nanoparticle system suitable for targeted uptake and its photochemical and photobiological characterization. The photosensitizer 5, 10, 15, 20-tetraphenyl-21H, 23H-porphyrine (TPP) was encapsulated in spermine- and acetal-modified dextran (SpAcDex) nanoparticles and conjugated with folic acid (FA) on the surface [SpAcDex(TPP)-FA]. The particles are successfully taken up by human HeLa-KB cells, and a light-induced cytotoxicity is observable. An excess of free folate as the competitor for the FRα-mediated uptake inhibits the phototoxicity. In conclusion, folate-modified SpAcDex particles are a promising drug delivery system for a tumor cell targeted photodynamic therapy.
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Affiliation(s)
- Kathrin Butzbach
- Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany
| | - Matthias Konhäuser
- Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany
| | - Matthias Fach
- Department of Health Technology, Technical University of Denmark, Produktionstorvet Building 423, 2800 Lyngby, Denmark
| | - Denise N Bamberger
- Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany
| | - Benjamin Breitenbach
- Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany
| | - Bernd Epe
- Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany
| | - Peter R Wich
- Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudingerweg 5, 55128 Mainz, Germany.
- School of Chemical Engineering, University of New South Wales, Science and Engineering Building, Sydney, NSW 2052, Australia.
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia.
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12
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Breitenbach BB, Steiert E, Konhäuser M, Vogt LM, Wang Y, Parekh SH, Wich PR. Double stimuli-responsive polysaccharide block copolymers as green macrosurfactants for near-infrared photodynamic therapy. Soft Matter 2019; 15:1423-1434. [PMID: 30662988 DOI: 10.1039/c8sm02204f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The NIR absorbing photosensitizer phthalocyanine zinc (PC(Zn)) was stabilized in aqueous media as water-dispersible nanoparticles with a reduction- and pH-responsive full polysaccharide block copolymer. A cellular uptake and also photo switchable intracellular activity of the cargo upon irradiation at wavelengths in the near infrared region were shown. The block copolymer was synthesized by applying a copper-free click strategy based on a thiol exchange reaction, creating an amphiphilic double-stimuli-responsive mixed disulfide. The dual-sensitive polysaccharide micelles represent a non-toxic and biodegradable green macrosurfactant for the delivery of phthalocyanine zinc. By encapsulation into micellar nanoparticles, the bioavailability of PC(Zn) increased significantly, enabling smart photodynamic therapy for future applications in cancer-related diseases.
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Affiliation(s)
- Benjamin B Breitenbach
- Institut für Pharmazie und Biochemie, Johannes Gutenberg-Universität Mainz, Staudingerweg 5, 55128 Mainz, Germany
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13
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Paßlick D, Piradashvili K, Bamberger D, Li M, Jiang S, Strand D, R. Wich P, Landfester K, Bros M, Grabbe S, Mailänder V. Delivering all in one: Antigen-nanocapsule loaded with dual adjuvant yields superadditive effects by DC-directed T cell stimulation. J Control Release 2018; 289:23-34. [DOI: 10.1016/j.jconrel.2018.09.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 08/13/2018] [Accepted: 09/11/2018] [Indexed: 12/14/2022]
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14
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Steiert E, Radi L, Fach M, Wich PR. Protein-Based Nanoparticles for the Delivery of Enzymes with Antibacterial Activity. Macromol Rapid Commun 2018; 39:e1800186. [DOI: 10.1002/marc.201800186] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/26/2018] [Indexed: 01/20/2023]
Affiliation(s)
- Elena Steiert
- Institut für Pharmazie und Biochemie; Johannes Gutenberg-Universität Mainz; Staudingerweg 5 55128 Mainz Germany
| | - Lydia Radi
- Institut für Pharmazie und Biochemie; Johannes Gutenberg-Universität Mainz; Staudingerweg 5 55128 Mainz Germany
| | - Matthias Fach
- Department of Micro and Nanotechnology; Technical University of Denmark; Produktionstorvet Building 423 2800 Lyngby Denmark
| | - Peter R. Wich
- Institut für Pharmazie und Biochemie; Johannes Gutenberg-Universität Mainz; Staudingerweg 5 55128 Mainz Germany
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15
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Bamberger D, Hobernik D, Konhäuser M, Bros M, Wich PR. Surface Modification of Polysaccharide-Based Nanoparticles with PEG and Dextran and the Effects on Immune Cell Binding and Stimulatory Characteristics. Mol Pharm 2017; 14:4403-4416. [DOI: 10.1021/acs.molpharmaceut.7b00507] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Denise Bamberger
- Department
of Pharmacy and Biochemistry, Johannes Gutenberg-University Mainz, Staudingerweg
5, 55128 Mainz, Germany
| | - Dominika Hobernik
- Department
of Dermatology, University Medical Center, Johannes Gutenberg-University Mainz, Obere Zahlbacher Straße 63, 55131 Mainz, Germany
| | - Matthias Konhäuser
- Department
of Pharmacy and Biochemistry, Johannes Gutenberg-University Mainz, Staudingerweg
5, 55128 Mainz, Germany
| | - Matthias Bros
- Department
of Dermatology, University Medical Center, Johannes Gutenberg-University Mainz, Obere Zahlbacher Straße 63, 55131 Mainz, Germany
| | - Peter R. Wich
- Department
of Pharmacy and Biochemistry, Johannes Gutenberg-University Mainz, Staudingerweg
5, 55128 Mainz, Germany
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16
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Breitenbach BB, Schmid I, Wich PR. Correction to Amphiphilic Polysaccharide Block Copolymers for pH-Responsive Micellar Nanoparticles. Biomacromolecules 2017; 18:3844-3845. [DOI: 10.1021/acs.biomac.7b01342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Affiliation(s)
- Benjamin B. Breitenbach
- Institut für Pharmazie
und Biochemie, Johannes Gutenberg-Universität Mainz, Staudingerweg
5, 55128 Mainz, Germany
| | - Ira Schmid
- Institut für Pharmazie
und Biochemie, Johannes Gutenberg-Universität Mainz, Staudingerweg
5, 55128 Mainz, Germany
| | - Peter R. Wich
- Institut für Pharmazie
und Biochemie, Johannes Gutenberg-Universität Mainz, Staudingerweg
5, 55128 Mainz, Germany
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18
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Previti S, Ettari R, Cosconati S, Amendola G, Chouchene K, Wagner A, Hellmich UA, Ulrich K, Krauth-Siegel RL, Wich PR, Schmid I, Schirmeister T, Gut J, Rosenthal PJ, Grasso S, Zappalà M. Development of Novel Peptide-Based Michael Acceptors Targeting Rhodesain and Falcipain-2 for the Treatment of Neglected Tropical Diseases (NTDs). J Med Chem 2017; 60:6911-6923. [PMID: 28763614 DOI: 10.1021/acs.jmedchem.7b00405] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This paper describes the development of a class of peptide-based inhibitors as novel antitrypanosomal and antimalarial agents. The inhibitors are based on a characteristic peptide sequence for the inhibition of the cysteine proteases rhodesain of Trypanosoma brucei rhodesiense and falcipain-2 of Plasmodium falciparum. We exploited the reactivity of novel unsaturated electrophilic functions such as vinyl-sulfones, -ketones, -esters, and -nitriles. The Michael acceptors inhibited both rhodesain and falcipain-2, at nanomolar and micromolar levels, respectively. In particular, the vinyl ketone 3b has emerged as a potent rhodesain inhibitor (k2nd = 67 × 106 M-1 min-1), endowed with a picomolar binding affinity (Ki = 38 pM), coupled with a single-digit micromolar activity against Trypanosoma brucei brucei (EC50 = 2.97 μM), thus being considered as a novel lead compound for the discovery of novel effective antitrypanosomal agents.
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Affiliation(s)
- Santo Previti
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina , Viale Annunziata, 98168 Messina, Italy
| | - Roberta Ettari
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina , Viale Annunziata, 98168 Messina, Italy
| | - Sandro Cosconati
- DiSTABiF, University of Campania Luigi Vanvitelli , Via Vivaldi 43, 81100 Caserta, Italy
| | - Giorgio Amendola
- DiSTABiF, University of Campania Luigi Vanvitelli , Via Vivaldi 43, 81100 Caserta, Italy
| | - Khawla Chouchene
- Laboratoire de Chimie des Substances Naturelles UR/11-ES-74, Faculté des Sciences de Sfax, Université de Sfax , Route de l'aeroport, 3000 Sfax, Tunisia
| | - Annika Wagner
- Institute of Pharmacy and Biochemistry, University of Mainz , Johann-Joachim-Becherweg 30, DE 55128 Mainz, Germany.,Centre for Biomolecular Magnetic Resonance (BMRZ), Goethe-University Frankfurt , Max-von-Laue-Strasse 9, DE 60438 Frankfurt am Main, Germany
| | - Ute A Hellmich
- Institute of Pharmacy and Biochemistry, University of Mainz , Johann-Joachim-Becherweg 30, DE 55128 Mainz, Germany.,Centre for Biomolecular Magnetic Resonance (BMRZ), Goethe-University Frankfurt , Max-von-Laue-Strasse 9, DE 60438 Frankfurt am Main, Germany
| | - Kathrin Ulrich
- Biochemistry Center, Heidelberg University , Im Neuenheimer Feld 328, DE 69120 Heidelberg, Germany
| | - R Luise Krauth-Siegel
- Biochemistry Center, Heidelberg University , Im Neuenheimer Feld 328, DE 69120 Heidelberg, Germany
| | - Peter R Wich
- Institute of Pharmacy and Biochemistry, University of Mainz , Staudingerweg 5, DE 55128 Mainz, Germany
| | - Ira Schmid
- Institute of Pharmacy and Biochemistry, University of Mainz , Staudingerweg 5, DE 55128 Mainz, Germany
| | - Tanja Schirmeister
- Institute of Pharmacy and Biochemistry, University of Mainz , Staudingerweg 5, DE 55128 Mainz, Germany
| | - Jiri Gut
- Department of Medicine, San Francisco General Hospital, University of California , 1001 Potrero Avenue, San Francisco, California 94110, United States
| | - Philip J Rosenthal
- Department of Medicine, San Francisco General Hospital, University of California , 1001 Potrero Avenue, San Francisco, California 94110, United States
| | - Silvana Grasso
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina , Viale Annunziata, 98168 Messina, Italy
| | - Maria Zappalà
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina , Viale Annunziata, 98168 Messina, Italy
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19
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Foerster F, Bamberger D, Schupp J, Weilbächer M, Kaps L, Strobl S, Radi L, Diken M, Strand D, Tuettenberg A, Wich PR, Schuppan D. Dextran-based therapeutic nanoparticles for hepatic drug delivery. Nanomedicine (Lond) 2016; 11:2663-2677. [PMID: 27628057 DOI: 10.2217/nnm-2016-0156] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
AIM Evaluation of dextran-based nanoparticles (DNP) as a drug delivery system to target myeloid cells of the liver. MATERIALS & METHODS DNP were synthesized and optionally PEGylated. Their toxicity and cellular uptake were studied in vitro. Empty and siRNA-carrying DNP were tested in vivo with regard to biodistribution and cellular uptake. RESULTS In vitro, DNP were taken up by cells of the myeloid lineage without compromising their viability. In vivo, empty and siRNA-carrying DNP distributed to the liver where a single treatment addressed approximately 70% of macrophages and dendritic cells. Serum parameters indicated no in vivo toxicity. CONCLUSION DNP are multifunctional liver-specific drug carriers which lack toxic side effects and may be utilized in clinical applications targeting liver macrophages.
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Affiliation(s)
- Friedrich Foerster
- Institute of Translational Immunology & Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany.,Department of Medicine I, University Medical Center, Mainz, Germany
| | - Denise Bamberger
- Institute of Pharmacy & Biochemistry, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz, Germany
| | - Jonathan Schupp
- Department of Dermatology, University Medical Center, Mainz, Germany
| | - Martin Weilbächer
- Department of Dermatology, University Medical Center, Mainz, Germany
| | - Leonard Kaps
- Institute of Translational Immunology & Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Stephanie Strobl
- Institute of Translational Immunology & Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Lydia Radi
- Institute of Pharmacy & Biochemistry, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz, Germany
| | - Mustafa Diken
- TRON - Translational Oncology at the University Medical Center of Johannes Gutenberg University Mainz gGmbH, Freiligrathstraße 12, 55131 Mainz, Germany
| | - Dennis Strand
- Department of Medicine I, University Medical Center, Mainz, Germany
| | | | - Peter R Wich
- Institute of Pharmacy & Biochemistry, Johannes Gutenberg-University Mainz, Staudingerweg 5, Mainz, Germany
| | - Detlef Schuppan
- Institute of Translational Immunology & Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany.,Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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20
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Affiliation(s)
- Matthias Fach
- Institut für Pharmazie und Biochemie, Johannes Gutenberg-Universität Mainz, Staudingerweg 5, 55128 Mainz, Germany
| | - Lydia Radi
- Institut für Pharmazie und Biochemie, Johannes Gutenberg-Universität Mainz, Staudingerweg 5, 55128 Mainz, Germany
| | - Peter R. Wich
- Institut für Pharmazie und Biochemie, Johannes Gutenberg-Universität Mainz, Staudingerweg 5, 55128 Mainz, Germany
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21
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Schirmeister T, Kesselring J, Jung S, Schneider TH, Weickert A, Becker J, Lee W, Bamberger D, Wich PR, Distler U, Tenzer S, Johé P, Hellmich UA, Engels B. Quantum Chemical-Based Protocol for the Rational Design of Covalent Inhibitors. J Am Chem Soc 2016; 138:8332-5. [DOI: 10.1021/jacs.6b03052] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tanja Schirmeister
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Jochen Kesselring
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Sascha Jung
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Thomas H. Schneider
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Anastasia Weickert
- Institut
für Phys. und Theor. Chemie, Universität Würzburg, Emil-Fischer-Straße
42, 97074 Würzburg, Germany
| | - Johannes Becker
- Institut
für Phys. und Theor. Chemie, Universität Würzburg, Emil-Fischer-Straße
42, 97074 Würzburg, Germany
| | - Wook Lee
- Institut
für Phys. und Theor. Chemie, Universität Würzburg, Emil-Fischer-Straße
42, 97074 Würzburg, Germany
| | - Denise Bamberger
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Peter R. Wich
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Ute Distler
- Institut
für Immunologie, Universitätsmedizin der Johannes-Gutenberg Universität Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Stefan Tenzer
- Institut
für Immunologie, Universitätsmedizin der Johannes-Gutenberg Universität Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Patrick Johé
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Ute A. Hellmich
- Institut
für Pharmazie und Biochemie, Johannes Gutenberg Universität Mainz, J.-J. Becherweg 30, 55128 Mainz, Germany
- Center
for Biomolecular Magnetic Resonance (BMRZ), Goethe University, Theodor-W.-Adorno-Platz
1, 60323 Frankfurt, Germany
| | - Bernd Engels
- Institut
für Phys. und Theor. Chemie, Universität Würzburg, Emil-Fischer-Straße
42, 97074 Würzburg, Germany
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22
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Radi L, Fach M, Montigny M, Berger-Nicoletti E, Tremel W, Wich PR. Methods of protein surface PEGylation under structure preservation for the emulsion-based formation of stable nanoparticles. Med Chem Commun 2016. [DOI: 10.1039/c5md00475f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We evaluated different methods for a high surface PEGylation of lysozyme. The resulting lipophilic enzymes can be used for the formation of stable nanoparticles.
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Affiliation(s)
- Lydia Radi
- Institut für Pharmazie und Biochemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
| | - Matthias Fach
- Institut für Pharmazie und Biochemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
| | - Mirko Montigny
- Institut für Anorganische Chemie und Analytische Chemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
| | | | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
| | - Peter R. Wich
- Institut für Pharmazie und Biochemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
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23
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Jiang QQ, Bartsch L, Sicking W, Wich PR, Heider D, Hoffmann D, Schmuck C. A new approach to inhibit human β-tryptase by protein surface binding of four-armed peptide ligands with two different sets of arms. Org Biomol Chem 2013; 11:1631-9. [DOI: 10.1039/c3ob27302d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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24
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Ornelas-Megiatto C, Shah PN, Wich PR, Cohen JL, Tagaev JA, Smolen JA, Wright BD, Panzner MJ, Youngs WJ, Fréchet JMJ, Cannon CL. Aerosolized antimicrobial agents based on degradable dextran nanoparticles loaded with silver carbene complexes. Mol Pharm 2012; 9:3012-22. [PMID: 23025592 PMCID: PMC3579655 DOI: 10.1021/mp3004379] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Degradable acetalated dextran (Ac-DEX) nanoparticles were prepared and loaded with a hydrophobic silver carbene complex (SCC) by a single-emulsion process. The resulting particles were characterized for morphology and size distribution using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and dynamic light scattering (DLS). The average particle size and particle size distribution were found to be a function of the ratio of the organic phase to the surfactant containing aqueous phase with a 1:5 volume ratio of Ac-DEX CH(2)Cl(2) (organic):PBS (aqueous) being optimal for the formulation of nanoparticles with an average size of 100 ± 40 nm and a low polydispersity. The SCC loading was found to increase with an increase in the SCC quantity in the initial feed used during particle formulation up to 30% (w/w); however, the encapsulation efficiency was observed to be the best at a feed ratio of 20% (w/w). In vitro efficacy testing of the SCC loaded Ac-DEX nanoparticles demonstrated their activity against both Gram-negative and Gram-positive bacteria; the nanoparticles inhibited the growth of every bacterial species tested. As expected, a higher concentration of drug was required to inhibit bacterial growth when the drug was encapsulated within the nanoparticle formulations compared with the free drug illustrating the desired depot release. Compared with free drug, the Ac-DEX nanoparticles were much more readily suspended in an aqueous phase and subsequently aerosolized, thus providing an effective method of pulmonary drug delivery.
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Affiliation(s)
| | - Parth N. Shah
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
| | - Peter R. Wich
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | - Jessica L. Cohen
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | - Jasur A. Tagaev
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
| | - Justin A. Smolen
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
| | - Brian D. Wright
- Department of Chemistry, University of Akron, Akron, Ohio 44325-0002, USA
| | - Matthew J. Panzner
- Department of Chemistry, University of Akron, Akron, Ohio 44325-0002, USA
| | - Wiley J. Youngs
- Department of Chemistry, University of Akron, Akron, Ohio 44325-0002, USA
| | - Jean M. J. Fréchet
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
- King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Carolyn L. Cannon
- Division of Pulmonary and Vascular Biology, Department of Pediatrics, UT Southwestern Medical Center, Dallas, Texas 75390-9063, USA
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25
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Cui L, Cohen JL, Chu CK, Wich PR, Kierstead PH, Fréchet JMJ. Conjugation Chemistry through Acetals toward a Dextran-Based Delivery System for Controlled Release of siRNA. J Am Chem Soc 2012; 134:15840-8. [DOI: 10.1021/ja305552u] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lina Cui
- College of
Chemistry, University of California, Berkeley,
California 94720-1460, United States
| | - Jessica L. Cohen
- College of
Chemistry, University of California, Berkeley,
California 94720-1460, United States
| | - Crystal K. Chu
- College of
Chemistry, University of California, Berkeley,
California 94720-1460, United States
| | - Peter R. Wich
- College of
Chemistry, University of California, Berkeley,
California 94720-1460, United States
| | - Paul H. Kierstead
- College of
Chemistry, University of California, Berkeley,
California 94720-1460, United States
| | - Jean M. J. Fréchet
- College of
Chemistry, University of California, Berkeley,
California 94720-1460, United States
- King Abdullah University of Science and Technology (KAUST), Bldg 16, Suite 4428, Thuwal, 23955-6900 Saudi Arabia
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26
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Ornelas-Megiatto C, Wich PR, Fréchet JMJ. Polyphosphonium polymers for siRNA delivery: an efficient and nontoxic alternative to polyammonium carriers. J Am Chem Soc 2012; 134:1902-5. [PMID: 22239619 DOI: 10.1021/ja207366k] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A water-soluble polyphosphonium polymer was synthesized and directly compared with its ammonium analog in terms of siRNA delivery. The triethylphosphonium polymer shows transfection efficiency up to 65% with 100% cell viability, whereas the best result obtained for the ammonium analog reaches only 25% transfection with 85% cell viability. Moreover, the nature of the alkyl substituents on the phosphonium cations is shown to have an important influence on the transfection efficiency and toxicity of the polyplexes. The present results show that the use of positively charged phosphonium groups is a worthy choice to achieve a good balance between toxicity and transfection efficiency in gene delivery systems.
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27
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Abstract
Successful gene therapy depends both on the effective transport and the stable expression of therapeutic genes to produce and regulate disease related proteins. In this context, non-viral gene delivery vehicles are regarded as one of the most promising approaches for the efficient and safe transport of genetic material to and into the target cells. This short review describes the development of novel particulate delivery vehicles based on the biopolymer dextran. This multifunctional platform was designed to safely transport genetic material across cell membranes, followed by an acid triggered release that causes overall high transfection efficiency. The biocompatibility and its unique tunability differentiate this new carrier system from previous particle systems, showing high potential for the treatment of several disease models in RNA interference related applications.
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Cohen JL, Schubert S, Wich PR, Cui L, Cohen JA, Mynar JL, Fréchet JMJ. Acid-degradable cationic dextran particles for the delivery of siRNA therapeutics. Bioconjug Chem 2011; 22:1056-65. [PMID: 21539393 PMCID: PMC3152952 DOI: 10.1021/bc100542r] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a new acid-sensitive, biocompatible, and biodegradable microparticulate delivery system, spermine modified acetalated-dextran (Spermine-Ac-DEX), which can be used to efficiently encapsulate siRNA. These particles demonstrated efficient gene knockdown in HeLa-luc cells with minimal toxicity. This knockdown was comparable to that obtained using Lipofectamine, a commercially available transfection reagent generally limited to in vitro use due to its high toxicity.
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Affiliation(s)
- Jessica L. Cohen
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | | | - Peter R. Wich
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | - Lina Cui
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | | | - Justin L. Mynar
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | - Jean M. J. Fréchet
- College of Chemistry, University of California, Berkeley, California 94720-1460, USA
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Niebling S, Srivastava SK, Herrmann C, Wich PR, Schmuck C, Schlücker S. Site-specific pKa determination of the carboxylate-binding subunit in artificial peptide receptors. Chem Commun (Camb) 2010; 46:2133-5. [DOI: 10.1039/b926514g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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