1
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Cherri M, Romero JF, Steiner L, Dimde M, Koeppe H, Paulus B, Mohammadifar E, Haag R. Power of the Disulfide Bond: An Ideal Random Copolymerization of Biodegradable Redox-Responsive Hyperbranched Polyglycerols. Biomacromolecules 2024; 25:119-133. [PMID: 38112688 DOI: 10.1021/acs.biomac.3c00863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The development of copolymerization techniques that can randomly incorporate biodegradable moieties into the hyperbranched polyglycerol backbone is an option to prevent its bioaccumulation in vivo. In this study, redox-responsive and biocompatible hyperbranched polyglycerol copolymers of glycidol and 1,4,5-oxadithiepan-2-one were synthesized with an adjustable molecular weight and a defined disulfide bond content through anionic and coordination-insertion ring-opening polymerization. A truly random incorporation of the monomers was achieved under both copolymerization mechanisms. The copolymers were further characterized in terms of their aggregation behavior in solution, degradability, in vitro cell viability, and blood compatibility for potential future biomedical applications. Transmission electron microscopy revealed that the copolymer assembled into nanoparticles with a size range of 20 nm. The copolymers underwent degradation when incubated with two different reducing agents, resulting in smaller fragments of the polymer with thiol end groups. The copolymers demonstrated good biocompatibility, making them suitable for further investigation in biomedical applications.
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Affiliation(s)
- Mariam Cherri
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - J Fernanda Romero
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Luca Steiner
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Mathias Dimde
- Institute of Chemistry and Biochemistry, Research Center of Electron Microscopy, Freie Universität Berlin, Berlin 14195, Germany
| | - Hanna Koeppe
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Beate Paulus
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Ehsan Mohammadifar
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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2
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Fowler EW, Witt RL, Jia X. Basement Membrane Mimetic Hydrogel Cooperates with Rho-Associated Protein Kinase Inhibitor to Promote the Development of Acini-Like Salivary Gland Spheroids. ADVANCED NANOBIOMED RESEARCH 2023; 3:2300088. [PMID: 38645834 PMCID: PMC11031203 DOI: 10.1002/anbr.202300088] [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] [Indexed: 04/23/2024] Open
Abstract
Successful engineering of functional salivary glands necessitates the creation of cell-instructive environments for ex vivo expansion and lineage specification of primary human salivary gland stem cells (hS/PCs). Herein, basement membrane mimetic hydrogels were prepared using hyaluronic acid, cell adhesive peptides, and hyperbranched polyglycerol (HPG), with or without sulfate groups, to produce "hyperGel+" or "hyperGel", respectively. Differential scanning fluorescence experiments confirmed the ability of the sulphated HPG precursor to stabilize fibroblast growth factor 10. The hydrogels were nanoporous, cytocompatibile and cell-permissive, enabling the development of multicellular hS/PC spheroids in 14 days. Incorporation of sulfated HPG species in the hydrogel enhanced cell proliferation. Culture of hS/PCs in hyperGel+ in the presence of a Rho kinase inhibitor, Y-27632 (Y-27), led to the development of spheroids with a central lumen, increased the expression of acinar marker aquaporin-3 at the transcript level (AQP3), and decreased the expression of ductal marker keratin 7 at both the transcript (KRT7) and the protein levels (K7). Reduced expression of transforming growth factor beta (TGF-β) targets SMAD2/3 was also observed in Y27-treated cultures, suggesting attenuation of TGF-β signaling. Thus, hyperGel+ cooperates with the ROCK inhibitor to promote the development of lumened spheroids with enhanced expression of acinar markers.
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Affiliation(s)
- Eric W. Fowler
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, 19716, USA
| | - Robert L. Witt
- Helen F. Graham Cancer Center and Research Institute, Christiana Care, Newark, Delaware, 19713, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, 19716, USA
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, 19716, USA
- Delaware Biotechnology Institute, 590 Avenue 1743, Newark, DE 19713, USA
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3
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Zhang Y, Ranaei Pirmardan E, Barakat A, Hafezi-Moghadam A. Breath Biopsy Reveals Systemic Immunothrombosis and Its Resolution through Bioorthogonal Dendritic Nanoprobes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304903. [PMID: 37439390 DOI: 10.1002/adma.202304903] [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: 05/23/2023] [Accepted: 06/22/2023] [Indexed: 07/14/2023]
Abstract
Immunothrombosis, an inflammation-dependent activation of the coagulation cascade, leads to microthrombi formations in small vessels. It is a dreaded complication of COVID-19 and a major cause of respiratory failure. Due to their size and disseminated nature, microthrombi are currently undetectable. Here, noninvasive detection of a volatile reporter in the exhaled air is introduced for assessment of systemic immunothrombosis. A dendritic nanoprobe, containing high loading of a thrombin-sensitive substrate, is selectively cleaved by thrombin, resulting in release of a synthetic bioorthogonal volatile organic compound (VOC). The VOC is quantitated in the exhaled air biopsies via gas chromatography-mass spectrometry (GC-MS), allowing near real-time assessment of systemic immunothrombosis. The VOC detection can be further improved with more rapid and sensitive MS-based technologies. The amount of the VOC in the exhaled air decreases with resolution of the microvascular inflammation and intravascular fibrin depositions. Through conjugation of the thrombin-sensitive peptide with a rhodol derivative, a novel thrombin-sensitive fluorescent nanoprobe is developed for intravital visualization of thrombin activity in actively growing thrombi. These results establish unprecedented detection of thrombin activity in vivo, addressing this unmet medical need. This novel approach facilitates diagnosis of immunothrombosis in diseases such as diabetic complications, disseminated intravascular coagulation, and COVID-19.
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Affiliation(s)
- Yuanlin Zhang
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital and Department of Radiology, Harvard Medical School, 75 Francis St., Boston, MA, 02115, USA
| | - Ehsan Ranaei Pirmardan
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital and Department of Radiology, Harvard Medical School, 75 Francis St., Boston, MA, 02115, USA
| | - Aliaa Barakat
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital and Department of Radiology, Harvard Medical School, 75 Francis St., Boston, MA, 02115, USA
| | - Ali Hafezi-Moghadam
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital and Department of Radiology, Harvard Medical School, 75 Francis St., Boston, MA, 02115, USA
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4
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Perumal G, Pappuru S, Doble M, Chakraborty D, Shajahan S, Abu Haija M. Controlled Synthesis of Dendrite-like Polyglycerols Using Aluminum Complex for Biomedical Applications. ACS OMEGA 2023; 8:2377-2388. [PMID: 36687077 PMCID: PMC9851026 DOI: 10.1021/acsomega.2c06761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
This work describes a one-pot synthesis of dendrite-like hyperbranched polyglycerols (HPGs) via a ring-opening multibranching polymerization (ROMBP) process using a bis(5,7-dichloro-2-methyl-8-quinolinolato)methyl aluminum complex (1) as a catalyst and 1,1,1-tris(hydroxymethyl)propane/trimethylol propane (TMP) as an initiator. Single-crystal X-ray diffraction (XRD) analysis was used to elucidate the molecular structure of complex 1. Inverse-gated (IG)13C NMR analysis of HPGs showed degree of branching between 0.50 and 0.57. Gel permeation chromatography (GPC) analysis of the HPG polymers provided low, medium, and high-molecular weight (M n) polymers ranging from 14 to 73 kDa and molecular weight distributions (M w/M n) between 1.16 and 1.35. The obtained HPGs exhibited high wettability with water contact angle between 18 and 21° and T g ranging between -39 and -55 °C. Notably, ancillary ligand-supported aluminum complexes as catalysts for HPG polymerization reactions have not been reported to date. The obtained HPG polymers in the presence of the aluminum complex (1) can be used for various biomedical applications. Here, nanocomposite electrospun fibers were fabricated with synthesized HPG polymer. The nanofibers were subjected to cell culture experiments to evaluate cytocompatibility behavior with L929 and MG63 cells. The cytocompatibility studies of HPG polymer and nanocomposite scaffold showed high cell viability and spreading. The study results concluded, synthesized HPG polymers and composite nanofibers can be used for various biomedical applications.
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Affiliation(s)
- Govindaraj Perumal
- Department
of Conservative Dentistry and Endodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical
and Technical Sciences (SIMATS), Chennai600 077, India
| | - Sreenath Pappuru
- Faculty
of Chemical Engineering and the Grand Technion Energy Program, Technion-Israel Institute of Technology, Haifa320003, Israel
| | - Mukesh Doble
- Department
of Conservative Dentistry and Endodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical
and Technical Sciences (SIMATS), Chennai600 077, India
| | - Debashis Chakraborty
- Department
of Chemistry, Indian Institute of Technology
Madras, Chennai600 036, India
| | - Shanavas Shajahan
- Department
of Chemistry, Khalifa University of Science
and Technology, Abu Dhabi127788, United
Arab Emirates
| | - Mohammad Abu Haija
- Center
for Catalysis and Separations, Khalifa University
of Science and Technology, Abu Dhabi127788, United Arab Emirates
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5
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Pouyan P, Cherri M, Haag R. Polyglycerols as Multi-Functional Platforms: Synthesis and Biomedical Applications. Polymers (Basel) 2022; 14:polym14132684. [PMID: 35808728 PMCID: PMC9269438 DOI: 10.3390/polym14132684] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/24/2022] [Accepted: 06/26/2022] [Indexed: 02/07/2023] Open
Abstract
The remarkable and unique characteristics of polyglycerols (PG) have made them an attractive candidate for many applications in the biomedical and pharmaceutical fields. The presence of multiple hydroxy groups on the flexible polyether backbone not only enables the further modification of the PG structure but also makes the polymer highly water-soluble and results in excellent biocompatibility. In this review, the polymerization routes leading to PG with different architectures are discussed. Moreover, we discuss the role of these polymers in different biomedical applications such as drug delivery systems, protein conjugation, and surface modification.
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6
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Wallert M, Nie C, Anilkumar P, Abbina S, Bhatia S, Ludwig K, Kizhakkedathu JN, Haag R, Block S. Mucin-Inspired, High Molecular Weight Virus Binding Inhibitors Show Biphasic Binding Behavior to Influenza A Viruses. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004635. [PMID: 33135314 DOI: 10.1002/smll.202004635] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/28/2020] [Indexed: 06/11/2023]
Abstract
Multivalent binding inhibitors are a promising new class of antivirals that prevent virus infections by inhibiting virus binding to cell membranes. The design of these inhibitors is challenging as many properties, for example, inhibitor size and functionalization with virus attachment factors, strongly influence the inhibition efficiency. Here, virus binding inhibitors are synthesized, the size and functionalization of which are inspired by mucins, which are naturally occurring glycosylated proteins with high molecular weight (MDa range) and interact efficiently with various viruses. Hyperbranched polyglycerols (hPGs) with molecular weights ranging between 10 and 2600 kDa are synthesized, thereby hitting the size of mucins and allowing for determining the impact of inhibitor size on the inhibition efficiency. The hPGs are functionalized with sialic acids and sulfates, as suggested from the structure of mucins, and their inhibition efficiency is determined by probing the inhibition of influenza A virus (IAV) binding to membranes using various methods. The largest, mucin-sized inhibitor shows potent inhibition at pm concentrations, while the inhibition efficiency decreases with decreasing the molecular weight. Interestingly, the concentration-dependent IAV inhibition shows a biphasic behavior, which is attributed to differences in the binding affinity of the inhibitors to the two IAV envelope proteins, neuraminidase, and hemagglutinin.
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Affiliation(s)
- Matthias Wallert
- Institute of Chemistry and Biochemistry, Emmy-Noether Group "Bionanointerfaces", Freie Universität Berlin, Takustr. 3, Berlin, 14195, Germany
| | - Chuanxiong Nie
- Institute of Chemistry and Biochemistry, Macromolecular Chemistry, Freie Universität Berlin, Takustr. 3, Berlin, 14195, Germany
| | - Parambath Anilkumar
- Centre for Blood Research, Life Sciences Institute, Department of Pathology and Laboratory Medicine, University of British Columbia, 2350 Health Sciences Mall, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Srinivas Abbina
- Centre for Blood Research, Life Sciences Institute, Department of Pathology and Laboratory Medicine, University of British Columbia, 2350 Health Sciences Mall, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Sumati Bhatia
- Institute of Chemistry and Biochemistry, Macromolecular Chemistry, Freie Universität Berlin, Takustr. 3, Berlin, 14195, Germany
| | - Kai Ludwig
- Research Center for Electron Microscopy and Core Facility BioSupraMol, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 36a, Berlin, 14195, Germany
| | - Jayachandran N Kizhakkedathu
- Centre for Blood Research, Life Sciences Institute, Department of Pathology and Laboratory Medicine, University of British Columbia, 2350 Health Sciences Mall, Vancouver, British Columbia, V6T 1Z3, Canada
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
- School of Biomedical Engineering, University of British Columbia, Vancouver, British Columbia, V6T 1Z3, Canada
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Macromolecular Chemistry, Freie Universität Berlin, Takustr. 3, Berlin, 14195, Germany
| | - Stephan Block
- Institute of Chemistry and Biochemistry, Emmy-Noether Group "Bionanointerfaces", Freie Universität Berlin, Takustr. 3, Berlin, 14195, Germany
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7
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Abbina S, Gill A, Mathew S, Abbasi U, Kizhakkedathu JN. Polyglycerol-Based Macromolecular Iron Chelator Adjuvants for Antibiotics To Treat Drug-Resistant Bacteria. ACS APPLIED MATERIALS & INTERFACES 2020; 12:37834-37844. [PMID: 32639137 DOI: 10.1021/acsami.0c06501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Iron is an essential micronutrient for life. Its redox activity is a key component in a plethora of vital enzymatic reactions that take place in processes such as drug metabolism, DNA synthesis, steroid synthesis, gene regulation, and cellular respiration (oxygen transport and the electron transport chain). Bacteria are highly dependent on iron for their survival and growth and have specific mechanisms to acquire iron. Limiting the availability of iron to bacteria, thereby preventing their growth, provides new opportunities to treat infection in the era of the persistent rise of antibiotic-resistant bacteria. In this work, we have developed macromolecular iron chelators, conjugates of a high-affinity iron chelator (HBEDS) with polyglycerol, in an attempt to sequester iron uptake by bacteria to limit their growth in order to enhance antibiotic activity. The new macromolecular chelators are successful in slowing the growth of Staphylococcus aureus and worked as an efficient bacteriostatic against S. aureus. Further, these cytocompatible macrochelators acted as effective adjuvants to prevent bacterial growth when used in conjunction with antibiotics. The adjuvant activity of the macrochelators depends on their molecular weight and the chelator density on these molecules. These selective macro iron(III) chelators are highly efficient in growth inhibition and killing of methicillin-resistant S. aureus in conjunction with a low concentration of rifampicin.
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Affiliation(s)
- Srinivas Abbina
- Centre for Blood Research, Life Sciences Institute, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Arshdeep Gill
- Centre for Blood Research, Life Sciences Institute, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Chemistry, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Snehamol Mathew
- Centre for Blood Research, Life Sciences Institute, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Usama Abbasi
- Centre for Blood Research, Life Sciences Institute, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Jayachandran N Kizhakkedathu
- Centre for Blood Research, Life Sciences Institute, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Chemistry, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- School of Biomedical Engineering, The University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
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8
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Blood circulation of soft nanomaterials is governed by dynamic remodeling of protein opsonins at nano-biointerface. Nat Commun 2020; 11:3048. [PMID: 32546688 PMCID: PMC7298025 DOI: 10.1038/s41467-020-16772-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 05/26/2020] [Indexed: 01/27/2023] Open
Abstract
Nanomaterials in the blood must mitigate the immune response to have a prolonged vascular residency in vivo. The composition of the protein corona that forms at the nano-biointerface may be directing this, however, the possible correlation of corona composition with blood residency is currently unknown. Here‚ we report a panel of new soft single molecule polymer nanomaterials (SMPNs) with varying circulation times in mice (t1/2β ~ 22 to 65 h) and use proteomics to probe protein corona at the nano-biointerface to elucidate the mechanism of blood residency of nanomaterials. The composition of the protein opsonins on SMPNs is qualitatively and quantitatively dynamic with time in circulation. SMPNs that circulate longer are able to clear some of the initial surface-bound common opsonins, including immunoglobulins, complement, and coagulation proteins. This continuous remodelling of protein opsonins may be an important decisive step in directing elimination or residence of soft nanomaterials in vivo. The blood circulation time is important to the biomedical application of nanomaterials. Here, the authors explore the effect of protein corona formation on the blood residency of nanomaterials and show circulation times are governed by the dynamic remodelling of protein opsonins in vivo.
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9
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Wu H, Chen Q, Jiao M, Xia X, Lian X, Huang N, Li K, Yin J, Shi B. Evaluation of nanomechanical properties of hyperbranched polyglycerols as prospective cell membrane engineering block. Colloids Surf B Biointerfaces 2020; 190:110968. [DOI: 10.1016/j.colsurfb.2020.110968] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/06/2020] [Accepted: 03/10/2020] [Indexed: 11/29/2022]
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10
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11
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Mega macromolecules as single molecule lubricants for hard and soft surfaces. Nat Commun 2020; 11:2139. [PMID: 32358489 PMCID: PMC7195476 DOI: 10.1038/s41467-020-15975-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 04/03/2020] [Indexed: 02/06/2023] Open
Abstract
A longstanding goal in science and engineering is to mimic the size, structure, and functionality present in biology with synthetic analogs. Today, synthetic globular polymers of several million molecular weight are unknown, and, yet, these structures are expected to exhibit unanticipated properties due to their size, compactness, and low inter-chain interactions. Here we report the gram-scale synthesis of dendritic polymers, mega hyperbranched polyglycerols (mega HPGs), in million daltons. The mega HPGs are highly water soluble, soft, nanometer-scale single polymer particles that exhibit low intrinsic viscosities. Further, the mega HPGs are lubricants acting as interposed single molecule ball bearings to reduce the coefficient of friction between both hard and soft natural surfaces in a size dependent manner. We attribute this result to their globular and single particle nature together with its exceptional hydration. Collectively, these results set the stage for new opportunities in the design, synthesis, and evaluation of mega polymers. Synthetic globular polymers of several million molecular weight are expected to exhibit unique properties but are difficult to synthesize. Here the authors synthesize such dendritic polymers that show unique lubrication properties and act as molecular ball bearings due to their 3D compact structure, size, solubility, hydration and low intrinsic viscosities.
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12
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Bochenek M, Oleszko-Torbus N, Wałach W, Lipowska-Kur D, Dworak A, Utrata-Wesołek A. Polyglycidol of Linear or Branched Architecture Immobilized on a Solid Support for Biomedical Applications. POLYM REV 2020. [DOI: 10.1080/15583724.2020.1720233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Marcelina Bochenek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | | | - Wojciech Wałach
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Daria Lipowska-Kur
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Andrzej Dworak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
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13
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Jafari M, Abolmaali SS, Najafi H, Tamaddon AM. Hyperbranched polyglycerol nanostructures for anti-biofouling, multifunctional drug delivery, bioimaging and theranostic applications. Int J Pharm 2020; 576:118959. [DOI: 10.1016/j.ijpharm.2019.118959] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 12/22/2022]
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14
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Farhat W, Biundo A, Stamm A, Malmström E, Syrén P. Lactone monomers obtained by enzyme catalysis and their use in reversible thermoresponsive networks. J Appl Polym Sci 2020. [DOI: 10.1002/app.48949] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wissam Farhat
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
| | - Antonino Biundo
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
| | - Arne Stamm
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
| | - Eva Malmström
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
| | - Per‐Olof Syrén
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Fibre and Polymer TechnologyKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
- Science for Life Laboratory, Division of Protein TechnologyKTH Royal Institute of Technology Tomtebodavägen 23, Box 1031, 171 21 Solna Stockholm Sweden
- Wallenberg Wood Science CenterKTH Royal Institute of Technology Teknikringen 56‐58, 100 44 Stockholm Sweden
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15
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Schmitt V, Rodríguez-Rodríguez C, Hamilton JL, Shenoi RA, Schaffer P, Sossi V, Kizhakkedathu JN, Saatchi K, Häfeli UO. Quantitative SPECT imaging and biodistribution point to molecular weight independent tumor uptake for some long-circulating polymer nanocarriers. RSC Adv 2018; 8:5586-5595. [PMID: 35542449 PMCID: PMC9078196 DOI: 10.1039/c7ra09183d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 01/20/2018] [Indexed: 11/21/2022] Open
Abstract
Polymeric nanocarriers are promising entities for cancer diagnosis and therapy. The aim of such nanocarriers is to selectively accumulate in cancerous tissue that is difficult to visualize or treat. The passive accumulation of a nanocarrier in a tumor through extravasation is often attributed to the enhanced permeation and retention (EPR) effect and the size and shape of the nanocarrier. However, the tumor microenvironment is very heterogeneous and the intratumoral pressure is usually high, leading to different opinions about how the EPR of nanocarriers through the irregular vasculature of a tumor leads to accumulation. In order to investigate this topic, we studied methods for the determination of pharmacokinetic parameters, biodistribution and the tumor uptake of nanocarriers. More specifically, we used non-invasive quantitative Single-Photon Emission Computed Tomography/Computed Tomography (qSPECT/CT) imaging of hyperbranched polyglycerols (HPGs) to explore the specific biodistribution and tumor uptake of six model nanocarriers in Rag2m mice. We were interested to see if a distinct molecular weight (MW) of nanocarriers (HPG 25, 50, 100, 200, 300, 500 kDa) is favoured by the tumor. To trace the model nanocarriers, HPGs were covalently linked to the strong chelator desferrioxamine (DFO), and radiolabeled with the gamma emitter 67Ga (EC = 100%, E γ = 185 keV (21.4%), 300 keV (16.6%), half-life = 3.26 d). Without the need for blood collection, but instead using qSPECT/CT imaging inside the heart, the blood circulation half-lives of the 67Ga labeled HPGs were determined and increased from 9.9 ± 2.9 to 47.8 ± 7.9 hours with increasing polymer MW. Total tumor accumulation correlated positively with the circulation time of the HPGs. Comparing the tumor-to-blood ratio dynamically revealed how blood and tumor concentrations of the nanocarrier change over time and when equilibrium is reached. The time of equilibrium is size-dependent and increases with molecular weight. Furthermore, the data indicate that for larger MWs, nanocarrier uptake and retention by the tumor is size independent. Further studies are necessary to advance our understanding of the interplay between MW and nanoparticle accumulation in tumors.
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Affiliation(s)
- V Schmitt
- The University of British Columbia, Faculty of Pharmaceutical Sciences 2405 Wesbrook Mall Vancouver BC V6T1Z3 Canada
| | - C Rodríguez-Rodríguez
- The University of British Columbia, Faculty of Pharmaceutical Sciences 2405 Wesbrook Mall Vancouver BC V6T1Z3 Canada
- Department of Physics & Astronomy, The University of British Columbia Vancouver BC Canada
- Centre for Comparative Medicine, The University of British Columbia Vancouver BC Canada
| | - J L Hamilton
- Centre for Blood Research, Department of Pathology and Laboratory Medicine, The University of British Columbia Vancouver BC Canada
| | - R A Shenoi
- Centre for Blood Research, Department of Pathology and Laboratory Medicine, The University of British Columbia Vancouver BC Canada
| | - P Schaffer
- TRIUMF 4004 Wesbrook Mall Vancouver BC Canada
| | - V Sossi
- Department of Physics & Astronomy, The University of British Columbia Vancouver BC Canada
| | - J N Kizhakkedathu
- Centre for Blood Research, Department of Pathology and Laboratory Medicine, The University of British Columbia Vancouver BC Canada
- Department of Chemistry, The University of British Columbia Vancouver BC Canada
| | - K Saatchi
- The University of British Columbia, Faculty of Pharmaceutical Sciences 2405 Wesbrook Mall Vancouver BC V6T1Z3 Canada
| | - U O Häfeli
- The University of British Columbia, Faculty of Pharmaceutical Sciences 2405 Wesbrook Mall Vancouver BC V6T1Z3 Canada
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16
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Pappuru S, Chakraborty D, Ramkumar V. Nb and Ta benzotriazole or benzoxazole phenoxide complexes as catalysts for the ring-opening polymerization of glycidol to synthesize hyperbranched polyglycerols. Dalton Trans 2017; 46:16640-16654. [PMID: 29168518 DOI: 10.1039/c7dt02839c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel mononuclear (1a-7a and 1b-6b) as well as tetranuclear (8a and 9a) niobium (Nb) and tantalum (Ta) complexes of benzotriazole or benzoxazole phenoxide pro-ligands bearing different substituents at the ortho and para positions of the phenol rings were synthesized and characterized. The reaction of NbCl5 or TaCl5 with one equivalent of benzotriazole or benzoxazole phenoxide pro-ligands (L1H-L6H) in dry toluene or chloroform produced the corresponding chloride (1a-6a and 1b-6b) and ethoxy (7a) mononuclear Nb and Ta complexes in high yields. Furthermore, from the mononuclear Nb complexes (1a or 4a), a new structural form of tetrameric niobium complexes (8a and 9a) was synthesized through a controlled hydrolysis reaction. The molecular structures of complexes 1b, 4b, 7a, 8a and 9a were unambiguously confirmed by single crystal X-ray diffraction analyses. Furthermore, all these complexes (1a-9a and 1b-6b) were tested as catalysts for the ring-opening polymerisation (ROP) of glycidol to synthesize hyperbranched polyglycerols (HPG) by using 1,1,1-tris(hydroxymethyl)propane (TMP) as an initiator. The degree of branching (DB) observed was 0.30-0.54, which is an indication of hyperbranched structures. In particular, for the niobium complex with electron-withdrawing substituents on the benzoxazole phenoxide pro-ligand (5a), we achieved superior behavior for the ROP of glycidol in terms of activity, control of molecular weight (Mn) and molecular weight distributions (MWDs) (92% of glycidol to HPG, Mn = 10.52 kg mol-1, MWDs <1.33, DB = 0.53 and Tg = -57 °C). A highly hydrophilic nature was observed for the synthesized HPG polymer by water contact angle measurement (20° to 35°).
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Affiliation(s)
- Sreenath Pappuru
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
| | - Debashis Chakraborty
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
| | - Venkatachalam Ramkumar
- Single Crystal XRD Lab, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
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17
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Synthesis of polyglycerol-citric acid nanoparticles as biocompatible vectors for biomedical applications. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.06.087] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Bhatia S, Lauster D, Bardua M, Ludwig K, Angioletti-Uberti S, Popp N, Hoffmann U, Paulus F, Budt M, Stadtmüller M, Wolff T, Hamann A, Böttcher C, Herrmann A, Haag R. Linear polysialoside outperforms dendritic analogs for inhibition of influenza virus infection in vitro and in vivo. Biomaterials 2017; 138:22-34. [DOI: 10.1016/j.biomaterials.2017.05.028] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 05/17/2017] [Accepted: 05/18/2017] [Indexed: 12/23/2022]
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19
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Mohammadifar E, Bodaghi A, Dadkhahtehrani A, Nemati Kharat A, Adeli M, Haag R. Green Synthesis of Hyperbranched Polyglycerol at Room Temperature. ACS Macro Lett 2017; 6:35-40. [PMID: 35632875 DOI: 10.1021/acsmacrolett.6b00804] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this work we report on a new method for the cationic polymerization of glycidol by citric acid at ambient and solvent free conditions. In this polymerization, citric acid is a proton donor and is able to incorporate in the structure of polyglycerol by reaction with the activated monomer. The molecular weight and degree of branching of the synthesized polymers are affected by the glycidol/citric acid molar ratios and reaction temperature. Due to the citric acid core of the hyperbranched polyglycerols, they are able to break down into the smaller segments at neutral or acidic conditions. Apart from citric acid, glycidol, and water, other reagents or organic solvents have not been used in the synthetic and purification processes. Taking advantage of the green synthesis and ability to cleave under physiological conditions, in addition to the intrinsic biocompatibility of polyglycerol, the synthesized polymers are promising candidates for future biomedical applications.
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Affiliation(s)
- Ehsan Mohammadifar
- School
of Chemistry, University College of Science, University of Tehran, Tehran, Iran
| | - Ali Bodaghi
- Department
of Chemistry, Faculty of Science, Lorestan University, Khoramabad, Iran
| | - Abbas Dadkhahtehrani
- Department
of Chemistry, Faculty of Science, Lorestan University, Khoramabad, Iran
| | - Ali Nemati Kharat
- School
of Chemistry, University College of Science, University of Tehran, Tehran, Iran
| | - Mohsen Adeli
- Department
of Chemistry, Faculty of Science, Lorestan University, Khoramabad, Iran
- Institute
of Chemistry and Biochemistry, Freie Universitat Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Rainer Haag
- Institute
of Chemistry and Biochemistry, Freie Universitat Berlin, Takustr. 3, D-14195 Berlin, Germany
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20
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Abbina S, Vappala S, Kumar P, Siren EMJ, La CC, Abbasi U, Brooks DE, Kizhakkedathu JN. Hyperbranched polyglycerols: recent advances in synthesis, biocompatibility and biomedical applications. J Mater Chem B 2017; 5:9249-9277. [DOI: 10.1039/c7tb02515g] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hyperbranched polyglycerol is one of the most widely studied biocompatible dendritic polymer and showed promising applications. Here, we summarized the recent advancements in the field.
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Affiliation(s)
- Srinivas Abbina
- Department of Pathology and Laboratory Medicine
- University of British Columbia
- Vancouver
- Canada
- Center for Blood Research
| | - Sreeparna Vappala
- Department of Pathology and Laboratory Medicine
- University of British Columbia
- Vancouver
- Canada
- Center for Blood Research
| | - Prashant Kumar
- Center for Blood Research
- University of British Columbia
- Vancouver
- Canada
- Department of Chemistry
| | - Erika M. J. Siren
- Center for Blood Research
- University of British Columbia
- Vancouver
- Canada
- Department of Chemistry
| | - Chanel C. La
- Center for Blood Research
- University of British Columbia
- Vancouver
- Canada
- Department of Chemistry
| | - Usama Abbasi
- Department of Pathology and Laboratory Medicine
- University of British Columbia
- Vancouver
- Canada
- Center for Blood Research
| | - Donald E. Brooks
- Department of Pathology and Laboratory Medicine
- University of British Columbia
- Vancouver
- Canada
- Center for Blood Research
| | - Jayachandran N. Kizhakkedathu
- Department of Pathology and Laboratory Medicine
- University of British Columbia
- Vancouver
- Canada
- Center for Blood Research
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21
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Son S, Park H, Shin E, Shibasaki Y, Kim BS. Architecture-controlled synthesis of redox-degradable hyperbranched polyglycerol block copolymers and the structural implications of their degradation. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Suhyun Son
- Department of Energy Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 689-798 Korea
| | - Haeree Park
- Department of Chemical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 689-798 Korea
| | - Eeseul Shin
- Department of Chemistry; Ulsan National Institute of Science and Technology (UNIST); Ulsan 689-798 Korea
| | - Yuji Shibasaki
- Department of Chemistry and Bioengineering, Faculty of Engineering; Iwate University; 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - Byeong-Su Kim
- Department of Energy Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 689-798 Korea
- Department of Chemistry; Ulsan National Institute of Science and Technology (UNIST); Ulsan 689-798 Korea
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22
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Misri R, Wong NK, Shenoi RA, Lum CM, Chafeeva I, Toth K, Rustum Y, Kizhakkedathu JN, Khan MK. Investigation of hydrophobically derivatized hyperbranched polyglycerol with PEGylated shell as a nanocarrier for systemic delivery of chemotherapeutics. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 11:1785-95. [DOI: 10.1016/j.nano.2015.04.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 04/21/2015] [Accepted: 04/25/2015] [Indexed: 01/05/2023]
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23
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Sutter M, Silva ED, Duguet N, Raoul Y, Métay E, Lemaire M. Glycerol Ether Synthesis: A Bench Test for Green Chemistry Concepts and Technologies. Chem Rev 2015. [PMID: 26196761 DOI: 10.1021/cr5004002] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Marc Sutter
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Eric Da Silva
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Nicolas Duguet
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Yann Raoul
- Organisation Nationale Interprofessionnelle des Oléagineux, 11 rue de Monceau, CS 60003, 75378 Paris Cedex 08, France
| | - Estelle Métay
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
| | - Marc Lemaire
- Equipe Catalyse Synthèse Environnement, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR-CNRS 5246, Université de Lyon, Université Claude Bernard-Lyon 1, Bâtiment Curien , 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
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24
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Shenoi RA, Chafeeva I, Lai BFL, Horte S, Kizhakkedathu JN. Bioreducible hyperbranched polyglycerols with disulfide linkages: Synthesis and biocompatibility evaluation. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27672] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Rajesh A. Shenoi
- Centre for Blood Research and Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver British Columbia Canada V6T 1Z3
| | - Irina Chafeeva
- Centre for Blood Research and Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver British Columbia Canada V6T 1Z3
| | - Benjamin F. L. Lai
- Centre for Blood Research and Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver British Columbia Canada V6T 1Z3
| | - Sonja Horte
- Centre for Blood Research and Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver British Columbia Canada V6T 1Z3
| | - Jayachandran N. Kizhakkedathu
- Centre for Blood Research and Department of Pathology and Laboratory Medicine; University of British Columbia; Vancouver British Columbia Canada V6T 1Z3
- Department of Chemistry; University of British Columbia; Vancouver British Columbia Canada V6T 1Z3
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25
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Gao S, Guan Q, Chafeeva I, Brooks DE, Nguan CYC, Kizhakkedathu JN, Du C. Hyperbranched polyglycerol as a colloid in cold organ preservation solutions. PLoS One 2015; 10:e0116595. [PMID: 25706864 PMCID: PMC4338306 DOI: 10.1371/journal.pone.0116595] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 12/12/2014] [Indexed: 12/19/2022] Open
Abstract
Hydroxyethyl starch (HES) is a common colloid in organ preservation solutions, such as in University of Wisconsin (UW) solution, for preventing graft interstitial edema and cell swelling during cold preservation of donor organs. However, HES has undesirable characteristics, such as high viscosity, causing kidney injury and aggregation of erythrocytes. Hyperbranched polyglycerol (HPG) is a branched compact polymer that has low intrinsic viscosity. This study investigated HPG (MW-0.5 to 119 kDa) as a potential alternative to HES for cold organ preservation. HPG was synthesized by ring-opening multibranching polymerization of glycidol. Both rat myocardiocytes and human endothelial cells were used as an in vitro model, and heart transplantation in mice as an in vivo model. Tissue damage or cell death was determined by both biochemical and histological analysis. HPG polymers were more compact with relatively low polydispersity index than HES in UW solution. Cold preservation of mouse hearts ex vivo in HPG solutions reduced organ damage in comparison to those in HES-based UW solution. Both size and concentration of HPGs contributed to the protection of the donor organs; 1 kDa HPG at 3 wt% solution was superior to HES-based UW solution and other HPGs. Heart transplants preserved with HPG solution (1 kDa, 3%) as compared with those with UW solution had a better functional recovery, less tissue injury and neutrophil infiltration in syngeneic recipients, and survived longer in allogeneic recipients. In cultured myocardiocytes or endothelial cells, significantly more cells survived after cold preservation with the HPG solution than those with the UW solution, which was positively correlated with the maintenance of intracellular adenosine triphosphate and cell membrane fluidity. In conclusion, HPG solution significantly enhanced the protection of hearts or cells during cold storage, suggesting that HPG is a promising colloid for the cold storage of donor organs and cells in transplantation.
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Affiliation(s)
- Sihai Gao
- Department of Urologic Sciences, the University of British Columbia, Vancouver, BC, Canada
- Department of Thoracic and Cardiovascular Surgery, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Qiunong Guan
- Department of Urologic Sciences, the University of British Columbia, Vancouver, BC, Canada
| | - Irina Chafeeva
- Centre for Blood Research, and the Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Donald E. Brooks
- Centre for Blood Research, and the Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Chemistry, University of British Columbia, Vancouver, BC, Canada
| | | | - Jayachandran N. Kizhakkedathu
- Centre for Blood Research, and the Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Chemistry, University of British Columbia, Vancouver, BC, Canada
- * E-mail: (JNK); (CD)
| | - Caigan Du
- Department of Urologic Sciences, the University of British Columbia, Vancouver, BC, Canada
- * E-mail: (JNK); (CD)
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26
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Son S, Shin E, Kim BS. Redox-Degradable Biocompatible Hyperbranched Polyglycerols: Synthesis, Copolymerization Kinetics, Degradation, and Biocompatibility. Macromolecules 2015. [DOI: 10.1021/ma502242v] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Suhyun Son
- Department of Chemistry and
Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Eeseul Shin
- Department of Chemistry and
Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Byeong-Su Kim
- Department of Chemistry and
Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
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27
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Staedtler AM, Hellmund M, Sheikhi Mehrabadi F, Thota BNS, Zollner TM, Koch M, Haag R, Schmidt N. Optimized effective charge density and size of polyglycerol amines leads to strong knockdown efficacy in vivo. J Mater Chem B 2015; 3:8993-9000. [DOI: 10.1039/c5tb01466b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The balance between core size, multiplicity and effective charge density plays an important role for the development of potent siRNA delivery systems.
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Affiliation(s)
- Anna Maria Staedtler
- Bayer Healthcare
- GDD
- Global Therapeutic Research
- TRG Oncology/Gynecological Therapies
- 13353 Berlin
| | - Markus Hellmund
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | | | - Bala N. S. Thota
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Thomas M. Zollner
- Bayer Healthcare
- GDD
- Global Therapeutic Research
- TRG Oncology/Gynecological Therapies
- 13353 Berlin
| | - Markus Koch
- Bayer Healthcare
- GDD
- Global Therapeutic Research
- TRG Oncology/Gynecological Therapies
- 13353 Berlin
| | - Rainer Haag
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Nicole Schmidt
- Bayer Healthcare
- GDD
- Global Therapeutic Research
- TRG Oncology/Gynecological Therapies
- 13353 Berlin
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28
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Hellmund M, Achazi K, Neumann F, Thota BNS, Ma N, Haag R. Systematic adjustment of charge densities and size of polyglycerol amines reduces cytotoxic effects and enhances cellular uptake. Biomater Sci 2015; 3:1459-65. [DOI: 10.1039/c5bm00187k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Excessive cationic charge density of polyplexes during cellular uptake is still a major hurdle for gene delivery. A systematic study on cytotoxic effects caused by effective charge density related to size showed moderate loaded hPG amines to be higher potential as low/high ones.
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Affiliation(s)
- Markus Hellmund
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Katharina Achazi
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Falko Neumann
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Bala N. S. Thota
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Nan Ma
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
- Institut für Biomaterialforschung
| | - Rainer Haag
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
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29
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Paulus F, Steinhilber D, Welker P, Mangoldt D, Licha K, Depner H, Sigrist S, Haag R. Structure related transport properties and cellular uptake of hyperbranched polyglycerol sulfates with hydrophobic cores. Polym Chem 2014. [DOI: 10.1039/c4py00430b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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30
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Du C, Mendelson AA, Guan Q, Chapanian R, Chafeeva I, da Roza G, Kizhakkedathu JN. The size-dependent efficacy and biocompatibility of hyperbranched polyglycerol in peritoneal dialysis. Biomaterials 2014; 35:1378-89. [DOI: 10.1016/j.biomaterials.2013.10.076] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 10/27/2013] [Indexed: 01/28/2023]
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31
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Imran ul-haq M, Hamilton JL, Lai BFL, Shenoi RA, Horte S, Constantinescu I, Leitch HA, Kizhakkedathu JN. Design of long circulating nontoxic dendritic polymers for the removal of iron in vivo. ACS NANO 2013; 7:10704-16. [PMID: 24256569 DOI: 10.1021/nn4035074] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Patients requiring chronic red blood cell (RBC) transfusions for inherited or acquired anemias are at risk of developing transfusional iron overload, which may impact negatively on organ function and survival. Current iron chelators are suboptimal due to the inconvenient mode of administration and/or side effects. Herein, we report a strategy to engineer low molecular weight iron chelators with long circulation lifetime for the removal of excess iron in vivo using a multifunctional dendritic nanopolymer scaffold. Desferoxamine (DFO) was conjugated to hyperbranched polyglycerol (HPG) and the plasma half-life (t1/2) in mice is defined by the structural features of the scaffold. There was a 484 fold increase in t1/2 between the DFO (5 min) versus the HPG-DFO (44 h). In an iron overloaded mouse model, efficient iron excretion by HPG-DFO in the urine and feces was demonstrated (p = 0.0002 and 0.003, respectively) as was a reduction in liver, heart, kidney, and pancreas iron content, and plasma ferritin level (p = 0.003, 0.001, 0.001, 0.001, and 0.003, respectively) compared to DFO. Conjugates showed no apparent toxicity in several analyses including body weight, serum lactate dehydrogenase level, necropsy analysis, and by histopathological examination of organs. These findings were supported by in vitro biocompatibility analyses, including blood coagulation, platelet activation, complement activation, red blood cell aggregation, hemolysis, and cell viability. This nanopolymer-based chelating system would potentially benefit patients suffering from transfusional iron overload.
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Affiliation(s)
- Muhammad Imran ul-haq
- Centre for Blood Research, Department of Pathology and Laboratory Medicine, and ‡Department of Chemistry, University of British Columbia , Life Sciences Centre, 2350 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
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32
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Paulus F, Weiss MER, Steinhilber D, Nikitin AN, Schütte C, Haag R. Anionic Ring-Opening Polymerization Simulations for Hyperbranched Polyglycerols with Defined Molecular Weights. Macromolecules 2013. [DOI: 10.1021/ma401712w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Florian Paulus
- Institut
für Organische Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Maximilian E. R. Weiss
- Institut
für Mathematik und Informatik, Fachbereich Mathematik, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, Germany
| | - Dirk Steinhilber
- Institut
für Organische Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Anatoly N. Nikitin
- Institut
für Mathematik und Informatik, Fachbereich Mathematik, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, Germany
- Institute on Laser and Information Technologies, Svyatoozerskaya
1, Shatura, Moscow Region 140700, Russia
| | - Christof Schütte
- Institut
für Mathematik und Informatik, Fachbereich Mathematik, Freie Universität Berlin, Arnimallee 6, 14195 Berlin, Germany
- Zuse-Institut Berlin (ZIB), Takustraße 7, 14195 Berlin, Germany
| | - Rainer Haag
- Institut
für Organische Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
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33
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Chang C, Teramoto Y, Nishio Y. Synthesis of O
-(2,3-dihydroxypropyl) cellulose in NaOH/urea aqueous solution: As a precursor for introducing “necklace-like” structure. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26773] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chunyu Chang
- Division of Forest and Biomaterials Science; Graduate School of Agriculture; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
- Guangzhou Sugarcane Industry Research Institute; Guangzhou 510316 China
| | - Yoshikuni Teramoto
- Division of Forest and Biomaterials Science; Graduate School of Agriculture; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Yoshiyuki Nishio
- Division of Forest and Biomaterials Science; Graduate School of Agriculture; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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