1
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Koch KC, Bizmark TM, Tew GN. Alcohol-containing protein transduction domain mimics. J Control Release 2024; 365:950-956. [PMID: 38065415 DOI: 10.1016/j.jconrel.2023.12.005] [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: 09/06/2023] [Revised: 11/27/2023] [Accepted: 12/02/2023] [Indexed: 12/22/2023]
Abstract
The application and design of protein transduction domains (PTDs) and protein transduction domain mimics (PTDMs) have revolutionized the field of biomacromolecule delivery. Our group has previously synthesized block copolymer PTDMs with well-defined hydrophobic and cationic blocks via ring-opening metathesis polymerization (ROMP). We have optimized the balance of hydrophobicity and cationic density to intracellularly deliver model proteins, active proteins, and antibodies. Despite the presence of serine, threonine, and tyrosine in naturally occurring PTDs, synthetic analogs have yet to be studied in PTDMs. In our present work, we introduce different alcohol groups to our PTDM structures as a new design parameter. A library of nine novel PTDMs were synthesized to incorporate alcohol groups of varying structures and evaluated based on their ability to intracellularly deliver fluorescently labeled antibodies. One PTDM in this novel library, named PTDM4, incorporates alcohol groups in both the hydrophobic and cationic blocks and was found to be the best performing PTDM with almost twice the median fluorescence intensity of the delivered antibody and half the cationic density compared to our positive control, a PTDM thoroughly studied by our group. PTDM4 was further studied by intracellularly delivering the active enzyme, TAT-Cre Recombinase. The activity of TAT-Cre Recombinase delivered by PTDM4 was comparable to that of the positive control, again with half the cationic density. This study is one of the first to examine the effects of alcohol groups on intracellular antibody and active enzyme delivery.
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Affiliation(s)
- Kayla C Koch
- Department of Polymer Science & Engineering, University of Massachusetts, Amherst, MA 01003, United States
| | - Tamara M Bizmark
- Department of Chemistry, Johannes Gutenberg University, Mainz, Germany
| | - Gregory N Tew
- Department of Polymer Science & Engineering, University of Massachusetts, Amherst, MA 01003, United States; Molecular & Cellular Biology Program, University of Massachusetts, Amherst, MA 01003, United States; Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, MA 01003, United States.
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2
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Liu C, Hu X, Zhou X, Ma Y, Leung PHM, Xin JH, Fei B. Guanidine-containing double-network silks with enhanced tensile and antibacterial property. Int J Biol Macromol 2023:125470. [PMID: 37336382 DOI: 10.1016/j.ijbiomac.2023.125470] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 06/02/2023] [Accepted: 06/16/2023] [Indexed: 06/21/2023]
Abstract
The bacterial infection of surgical wounds results in prolonged hospitalization and even death of patients, calling for antibacterial function in modern suture products. To tackle this challenge, cationic guanidine-containing copolymer was synthesized, exhibiting antibacterial potency over 5 log reduction against both Gram-positive S. aureus and Gram-negative E. coli. Furthermore, we developed a double-network silk suture by integrating a guanidine-containing copolymer network into the silk fibroin network. This suture exhibited biocidal activity against S. aureus and E. coli, and superior strength compared to the commercial product in both dry and wet conditions. These results may bring general benefits to public health and medical equipment sustainability.
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Affiliation(s)
- Chang Liu
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong
| | - Xin Hu
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong
| | - Xiang Zhou
- Department of Science, China Pharmaceutical University, Nanjing 211198, China
| | - Yan Ma
- Jinzhou Central Hospital, Jinzhou, China
| | - Polly H M Leung
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong
| | - John H Xin
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong
| | - Bin Fei
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong.
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3
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Mayder DM, Christopherson CJ, Primrose WL, Lin ASM, Hudson ZM. Polymer dots and glassy organic dots using dibenzodipyridophenazine dyes as water-dispersible TADF probes for cellular imaging. J Mater Chem B 2022; 10:6496-6506. [PMID: 35979840 DOI: 10.1039/d2tb01252a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescence imaging of living cells is key to better understanding cellular morphology and biological processes. Water-dispersible nanoparticles exhibiting thermally activated delayed fluorescence (TADF) have recently emerged as useful probes for time-resolved fluorescence imaging (TRFI), circumventing interference from biological autofluorescence. Many existing approaches, however, require TADF dyes with specific structural features, precluding many high-performance TADF materials from being used in this application. Here, we describe the synthesis of two TADF emitters based on the rigid and strongly electron-withdrawing dibenzo[a,c]dipyrido[3,2-h:2'-3'-j]phenazine-12-yl (BPPZ) motif, and demonstrate two parallel approaches for the encapsulation of these fluorophores to yield water-dispersible nanoparticles suitable for TRFI. First, fluorescent polymer dots (Pdots) were formed by dye encapsulation within cell-penetrating amphiphilic copolymers. Glassy organic nanoparticles (g-Odots) were also prepared, giving nanoparticles with higher photoluminescence quantum yields and improved colour purity. Both approaches yielded nanoparticles suitable for imaging, with reasonable uptake and cytotoxicity on the timescale of standard imaging experiments using human cervical (HeLa) and liver (HepG2) cancer cell lines. This work demonstrates two flexible strategies for preparing water-dispersible TADF nanoparticles for TRFI, both of which should be readily adaptable to nearly any existing hydrophobic TADF dye.
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Affiliation(s)
- Don M Mayder
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada.
| | - Cheyenne J Christopherson
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada.
| | - William L Primrose
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada.
| | - Angela S-M Lin
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada.
| | - Zachary M Hudson
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada.
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4
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Babaei M, Abnous K, Nekooei S, Mohammad Taghdisi S, Amel Farzad S, Ramezani M, Alibolandi M. Synthesis of manganese-incorporated polycaplactone-poly (glyceryl methacrylate) theranostic smart hybrid polymersomes for efficient colon adenocarcinoma treatment. Int J Pharm 2022;:121963. [PMID: 35764261 DOI: 10.1016/j.ijpharm.2022.121963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/16/2022] [Accepted: 06/22/2022] [Indexed: 11/24/2022]
Abstract
In the current study, a multifunctional nanoscale vesicular system (polymersome) with the ability to accumulate in the site of action, control drug release and integrate diagnostic and therapeutic functions was developed. The theranostic polymersome was engineered as a promising dual-functional nanoplatform, which can be used for tumor therapy and magnetic resonance imaging (MRI). In this regard, the amphiphilic diblock copolymer of poly(ε-caprolactone)-block-poly(glyceryl methacrylate)[(PCL-b-PGMA)] was synthesized by combined ring-opening polymerization (ROP), and reversible addition-fragmentation chain-transfer (RAFT) polymerization techniques followed by hydrolysis of the pendant oxiran rings to hydroxyl groups. Because of the amphiphilic properties and desirable hydrophobic/hydrophilic balance of the synthesized copolymer, it could self-assemble to form a polymersomal structure in an aqueous environment (with diameters about 100 - 145 nm). The hydrophilic anticancer drug, doxorubicin (DOX) and hydrophobic paramagnetic Mn (phenanthroline)2 complex, being well-represented on T1-weighted magnetic resonance imaging (MRI), were encapsulated in the hydrophilic core (33%±2.3 efficiency) and hydrophobic bilayer membrane (100 %efficient) of a polymersome system, respectively to provide PCL-PGMA@Mn(phen)2/DOX NPs. It was found that adding aptamer AS1411 to NPs surfaces enhanced their specificity and selectivity towards colorectal cancer cells expressing nucleolin (HT29 and C26). In vivo evaluation after intravenous administration of the prepared platform was performed using subcutaneous C26 tumor-bearing Balb/C mice. The obtained results demonstrated that the prepared targeted platform provided a reduced systemic toxicity in terms of body weight loss and mortality while showing efficient tumor regression. Furthermore, the prepared theranostic platform afforded MRI imaging capability for tumor monitoring. It could be concluded that the biocompatible PCL-PGMA magnetic DOX-loaded polymersomes could serve as a versatile multifunctional system for simultaneous tumor imaging and therapy.
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5
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Huang S, Huang X, Mao T, Yan H. A green and facile approach for synthesis of guanidine-rich hyperbranched polymers and the preliminary studies on their bioactivities. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2021.110985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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6
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Gerasin VA, Zhurina MV, Kleshcheva NA, Sivov NA, Mendeleev DI. Cyclic Methacrylate Tetrahydropyrimidinones: Synthesis, Properties, (Co)Polymerization. Polymers (Basel) 2021; 14:polym14010107. [PMID: 35012129 PMCID: PMC8747303 DOI: 10.3390/polym14010107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/22/2021] [Accepted: 12/24/2021] [Indexed: 11/16/2022] Open
Abstract
During radical polymerization of novel biocidal methacrylate guanidine monomers, a cyclic byproduct was discovered and identified as 2-imino-5-methyltetrahydropyrimidin-4(1H)-one (THP). Its methacrylate salt (MTHP) was synthesized and characterized via 1H and 13C NMR and pyrolysis chromatography. Synthesis conditions of both THP and MTHP were optimized to high yields, and both MTHP homopolymerization (in aqua) and copolymerization with diallyldimethylammonium chloride (in aqua in salt form) were successfully carried out with middle to high yields, providing a promising platform for potential tailored biocide polymers.
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Affiliation(s)
- Victor A. Gerasin
- A.V. Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences (RAS), Leninskii pr. 29, 119991 Moscow, Russia; (V.A.G.); (N.A.K.); (N.A.S.)
| | - Marina V. Zhurina
- Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, 119071 Moscow, Russia;
| | - Natalia A. Kleshcheva
- A.V. Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences (RAS), Leninskii pr. 29, 119991 Moscow, Russia; (V.A.G.); (N.A.K.); (N.A.S.)
| | - Nikolai A. Sivov
- A.V. Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences (RAS), Leninskii pr. 29, 119991 Moscow, Russia; (V.A.G.); (N.A.K.); (N.A.S.)
| | - Dmitry I. Mendeleev
- A.V. Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences (RAS), Leninskii pr. 29, 119991 Moscow, Russia; (V.A.G.); (N.A.K.); (N.A.S.)
- Correspondence:
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7
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Abstract
There is significant potential in exploiting antibody specificity to develop new therapeutic treatments. However, intracellular protein delivery is a paramount challenge because of the difficulty in transporting large, polar molecules across cell membranes. Cell-penetrating peptide mimics (CPPMs) are synthetic polymers that are versatile materials for intracellular delivery of biological molecules, including nucleic acids and proteins, with superior performance compared to their natural counterparts and commercially available peptide-based reagents. Studies have demonstrated that noncovalent complexation with these synthetic carriers is necessary for the delivery of proteins, but the fundamental interactions dominating CPPM-protein complexation are not well understood. Beyond these interactions, the mechanism of release for many noncovalent carriers is not well established. Herein, interactions expected to be critical in CPPM-protein binding and unbinding were explored, including hydrogen bonding, electrostatics, and hydrophobic interactions. Despite the guanidinium-rich functionality of these polymeric carriers, hydrogen bonding was shown not to be a dominant interaction in CPPM-protein binding. Fluorescence quenching assays were used to decouple the effect of electrostatic and hydrophobic interactions between amphiphilic CPPMs and proteins. Furthermore, by conducting competition assays with other proteins, unbinding of protein cargoes from CPPM-protein complexes was demonstrated and provided insight into mechanisms of protein release. This work offers understanding toward the role of carrier and cargo binding and unbinding in intracellular outcomes. In turn, an improved fundamental understanding of noncovalent polymer-protein complexation will enable more effective methods for intracellular protein delivery.
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Affiliation(s)
- Hazel C Davis
- Department of Polymer Science & Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Nicholas D Posey
- Department of Polymer Science & Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Gregory N Tew
- Department of Polymer Science & Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States.,Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, United States.,Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Massachusetts 01003, United States
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8
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Christopherson CJ, Paisley NR, Xiao Z, Algar WR, Hudson ZM. Red-Emissive Cell-Penetrating Polymer Dots Exhibiting Thermally Activated Delayed Fluorescence for Cellular Imaging. J Am Chem Soc 2021; 143:13342-13349. [PMID: 34382775 DOI: 10.1021/jacs.1c06290] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Fluorescence imaging in living cells is key to understanding many biological processes, yet autofluorescence from the sample can lower sensitivity and hinder high-resolution imaging. Time-gated measurements using phosphorescent metal complexes can improve imaging, at the cost of potential toxicity from the use of heavy metals. Here, we describe orange/red-emitting polymer dots (Pdots) exhibiting thermally activated delayed fluorescence (TADF) for time-gated imaging. Inspired by the cell invasion mechanism of the HIV TAT protein, the Pdots were formed from block copolymers composed of a hydrophilic guanidine-rich block as a cell-penetrating peptide mimic, and a rigid organic semiconductor block to provide efficient delayed fluorescence. These all-organic polymer nanoparticles were shown to efficiently enter HeLa, CHO, and HepG2 cells within 30 min, with cell viabilities remaining high for Pdot concentrations up to 25 mg mL-1. Pdot quantum yields were as high as 0.17 in aerated water, with the Pdot structure effectively shielding the TADF emitters from quenching by oxygen. Colocalization experiments revealed that the Pdots primarily accumulate outside of lysosomes, minimizing lysosomal degradation. When used for fixed cellular imaging, Pdot-incubated cells showed high signal-to-background ratios compared to control samples with no Pdot exposure. Using time-resolved spectroscopy, the delayed emission of the TADF materials was effectively separated from that of both a biological serum and a secondary fluorescent dye.
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Affiliation(s)
- Cheyenne J Christopherson
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1
| | - Nathan R Paisley
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1
| | - Zhujun Xiao
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1
| | - W Russ Algar
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1
| | - Zachary M Hudson
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1
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9
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Hango CR, Backlund CM, Davis HC, Posey ND, Minter LM, Tew GN. Non-Covalent Carrier Hydrophobicity as a Universal Predictor of Intracellular Protein Activity. Biomacromolecules 2021; 22:2850-2863. [PMID: 34156837 DOI: 10.1021/acs.biomac.1c00242] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Over the past decade, extensive optimization of polymeric cell-penetrating peptide (CPP) mimics (CPPMs) by our group has generated a substantial library of broadly effective carriers which circumvent the need for covalent conjugation often required by CPPs. In this study, design rules learned from CPPM development were applied to reverse-engineer the first library of simple amphiphilic block copolypeptides for non-covalent protein delivery, namely, poly(alanine-block-arginine), poly(phenylalanine-block-arginine), and poly(tryptophan-block-arginine). This new CPP library was screened for enhanced green fluorescent protein and Cre recombinase delivery alongside a library of CPPMs featuring equivalent side-chain configurations. Due to the added hydrophobicity imparted by the polymer backbone as compared to the polypeptide backbone, side-chain functionality was not a universal predictor of carrier performance. Rather, overall carrier hydrophobicity predicted the top performers for both internalization and activity of protein cargoes, regardless of backbone identity. Furthermore, comparison of protein uptake and function revealed carriers which facilitated high gene recombination despite remarkably low Cre internalization, leading us to formalize the concept of intracellular availability (IA) of the delivered cargo. IA, a measure of cargo activity per quantity of cargo internalized, provides valuable insight into the physical relationship between cellular internalization and bioavailability, which can be affected by bottlenecks such as endosomal escape and cargo release. Importantly, carriers with maximal IA existed within a narrow hydrophobicity window, more hydrophilic than those exhibiting maximal cargo uptake. Hydrophobicity may be used as a scaffold-independent predictor of protein uptake, function, and IA, enabling identification of new, effective carriers which would be overlooked by uptake-based screening methods.
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Affiliation(s)
- Christopher R Hango
- Department of Polymer Science & Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Coralie M Backlund
- Department of Polymer Science & Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Hazel C Davis
- Department of Polymer Science & Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Nicholas D Posey
- Department of Polymer Science & Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Lisa M Minter
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, United States.,Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, Untied States
| | - Gregory N Tew
- Department of Polymer Science & Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States.,Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, United States.,Department of Veterinary & Animal Sciences, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, Untied States
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10
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Kumar R, Santa Chalarca CF, Bockman MR, Bruggen CV, Grimme CJ, Dalal RJ, Hanson MG, Hexum JK, Reineke TM. Polymeric Delivery of Therapeutic Nucleic Acids. Chem Rev 2021; 121:11527-11652. [PMID: 33939409 DOI: 10.1021/acs.chemrev.0c00997] [Citation(s) in RCA: 113] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The advent of genome editing has transformed the therapeutic landscape for several debilitating diseases, and the clinical outlook for gene therapeutics has never been more promising. The therapeutic potential of nucleic acids has been limited by a reliance on engineered viral vectors for delivery. Chemically defined polymers can remediate technological, regulatory, and clinical challenges associated with viral modes of gene delivery. Because of their scalability, versatility, and exquisite tunability, polymers are ideal biomaterial platforms for delivering nucleic acid payloads efficiently while minimizing immune response and cellular toxicity. While polymeric gene delivery has progressed significantly in the past four decades, clinical translation of polymeric vehicles faces several formidable challenges. The aim of our Account is to illustrate diverse concepts in designing polymeric vectors towards meeting therapeutic goals of in vivo and ex vivo gene therapy. Here, we highlight several classes of polymers employed in gene delivery and summarize the recent work on understanding the contributions of chemical and architectural design parameters. We touch upon characterization methods used to visualize and understand events transpiring at the interfaces between polymer, nucleic acids, and the physiological environment. We conclude that interdisciplinary approaches and methodologies motivated by fundamental questions are key to designing high-performing polymeric vehicles for gene therapy.
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Affiliation(s)
- Ramya Kumar
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | | | - Matthew R Bockman
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Craig Van Bruggen
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christian J Grimme
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rishad J Dalal
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Mckenna G Hanson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Joseph K Hexum
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M Reineke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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11
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Yu Z, Zhang Z, Yan J, Zhao Z, Ge C, Song Z, Yin L, Tang H. Guanidine-rich helical polypeptides bearing hydrophobic amino acid pendants for efficient gene delivery. Biomater Sci 2021; 9:2670-2678. [PMID: 33605949 DOI: 10.1039/d0bm02188a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Non-viral gene delivery vectors with high transfection efficiency both in vitro and in vivo and low cytotoxicity are highly desirable for clinical applications. Herein, a series of guanidine-rich polypeptides bearing hydrophobic amino acid pendants was efficiently prepared via the 1,3-dipolar cycloaddition between azido decorated polypeptide and propargyl functionalized guanidinium and N-acetylamino acids. CD analysis indicated α-helical conformations of all resulting polypeptides in aqueous solution. The guanidine-rich polypeptide/DNA complexes showed significantly enhanced cellular internalization and high cell viability (>90%) in different mammalian cell lines (i.e., HeLa and RAW 264.7) at concentrations of the best performance. The top-performing guanidine-rich polypeptide containing 10% N-acetyl-l-valine pendants outperformed the commercial transfection reagent PEI by 400 times in vitro and 6 times in vivo. This study provides a new guidance for future molecular design of non-viral gene vectors with high delivery efficiency and low cytotoxicity.
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Affiliation(s)
- Zikun Yu
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China.
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12
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Fuchi Y, Murase H, Kai R, Kurata K, Karasawa S, Sasaki S. Artificial Host Molecules to Covalently Capture 8-Nitro-cGMP in Neutral Aqueous Solutions and in Cells. Bioconjug Chem 2021; 32:385-393. [PMID: 33529519 DOI: 10.1021/acs.bioconjchem.1c00012] [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: 11/29/2022]
Abstract
New 1,3-diazaphenoxazine derivatives (nitroG-Grasp-Guanidine, NGG) have been developed to covalently capture 8-nitro-cGMP in neutral aqueous solutions, which furnish a thiol reactive group to displace the 8-nitro group and a guanidine unit for interaction with the cyclic phosphate. The thiol group was introduced to the 1,3-diazaphenoxazine skeleton through a 2-aminobenzylthiol group (NGG-H) and its 4-methyl (NGG-pMe) and 6-methyl (NGG-oMe) substituted derivatives. The covalent adducts were formed between the NGG derivatives and 8-nitro-cGMP in neutral aqueous solutions. Among the NGG derivatives, the one with the 6-methyl group (NGG-oMe) exhibited the most efficient capture reaction. Furthermore, NGG-H showed a cell permeability into HEK-293 and RAW 264.7 cells and reduced the intracellular 8-nitro-cGMP level. The NGG derivatives developed in this study would become a valuable tool to study the intracellular role of 8-nitro-cGMP.
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Affiliation(s)
- Yasufumi Fuchi
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan.,Faculty of Pharmaceutical Sciences, Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida 194-8543, Japan.,Graduate School of Pharmaceutical Sciences, Tokushima Bunri University, 180 Yamashiro-cho, Tokushima 770-8514, Japan
| | - Hirotaka Murase
- Graduate School of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch Machi, Sasebo 859-3298, Japan
| | - Ryosuke Kai
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan
| | - Kakeru Kurata
- Faculty of Pharmaceutical Sciences, Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida 194-8543, Japan
| | - Satoru Karasawa
- Faculty of Pharmaceutical Sciences, Showa Pharmaceutical University, 3-3165 Higashi-tamagawagakuen, Machida 194-8543, Japan
| | - Shigeki Sasaki
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka 812-8582, Japan.,Graduate School of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch Machi, Sasebo 859-3298, Japan
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13
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Hao Q, Wang Z, Zhao W, Wen L, Wang W, Lu S, Xing D, Zhan M, Hu X. Dual-Responsive Polyprodrug Nanoparticles with Cascade-Enhanced Magnetic Resonance Signals for Deep-Penetration Drug Release in Tumor Therapy. ACS Appl Mater Interfaces 2020; 12:49489-49501. [PMID: 33079514 DOI: 10.1021/acsami.0c16110] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Smart transformable nanocarriers are promising to treat deep-seated diseases but require adaptable diagnostic/imaging potency to reflect the morphology change and therapeutic feedback, yet their design and synthesis remains challenging. Herein, stimuli-responsive polyprodrug nanoparticles (SPNs) are formulated from the co-assembly of negatively charged corona and positively charged polyprodrug cores, exhibiting high loading content of camptothecin (CPT, ∼28.6 wt %) tethered via disulfide linkages in the core. SPNs are sequentially sensitive to tumor acidic condition and elevated reductive milieu in the cytosol for deep-penetration drug delivery. Upon accumulation at acidic tumor sites, SPNs dissociate to release smaller positively charged polyprodrug nanoparticles, which efficiently enter deep-seated tumor cells to trigger high-dosage parent CPT release in the reductive cytosolic milieu. Meanwhile, the polyprodrug cores of SPNs labeled with DTPA(Gd), a magnetic resonance imaging contrast agent, can trace the cascade degradation and biodistribution of SPNs as well as the resulting intracellular CPT release. The longitudinal relaxivity of SPNs increases stepwise in the above two processes. The size-switchable polyprodrug nanoparticles exhibit remarkable tumor penetration and noteworthy tumor inhibition in vitro and in vivo, which are promising for endogenously activated precision diagnostics and therapy.
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Affiliation(s)
- Qiubo Hao
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Zhixiong Wang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Wei Zhao
- Division of Vascular and Interventional Radiology, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Liewei Wen
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Wenhui Wang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Siyu Lu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450000, China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Meixiao Zhan
- Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong 519000, China
| | - Xianglong Hu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
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14
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Li Y, Li P, Li R, Xu Q. Intracellular Antibody Delivery Mediated by Lipids, Polymers, and Inorganic Nanomaterials for Therapeutic Applications. Adv Therap 2020. [DOI: 10.1002/adtp.202000178] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yamin Li
- Department of Biomedical Engineering Tufts University Medford MA 02155 USA
| | - Peixuan Li
- Department of Biomedical Engineering Tufts University Medford MA 02155 USA
| | - Raissa Li
- Department of Biomedical Engineering Tufts University Medford MA 02155 USA
| | - Qiaobing Xu
- Department of Biomedical Engineering Tufts University Medford MA 02155 USA
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15
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Ding Z, Liu G, Hu J. Ratiometric Fluorescent Mapping of pH and Glutathione Dictates Intracellular Transport Pathways of Micellar Nanoparticles. Biomacromolecules 2020; 21:3436-3446. [PMID: 32678575 DOI: 10.1021/acs.biomac.0c00872] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Visualization of intracellular transport pathways is crucial to investigate the internalization mechanism and understand the intracellular behavior of nanomaterials. Herein, we rationalized the design of micellar nanoparticles (NPs) for ratiometric fluorescent mapping of intracellular pH and glutathione (GSH), two essential parameters for maintaining normal cellular functions. Specifically, pH-sensitive naphthalimide-based probe (NPI) and pH-inert rhodamine B (RhB) were covalently labeled to double hydrophilic block copolymers (DHBCs) using the thiolactone chemistry, enabling the covalent attachment of NPI and RhB to one molecule with a redox-responsive disulfide linkage. The dually labeled DHBCs exhibited blue/orange dual emissions in acidic pH, which was further converted into green/orange dual emissions in neutral pH because of the deprotonation of NPI moieties and the sole green emission in the presence of GSH at neutral pH because of the decreased Förster resonance energy transfer efficiency between an NPI donor and an RhB acceptor as a result of GSH-mediated cleavage of disulfide bonds. These remarkable ratiometric fluorescence changes allowed for not only the simultaneous mapping of the intracellular pH and GSH but also the intracellular transport pathways of internalized NPs.
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Affiliation(s)
- Zexuan Ding
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026 Anhui, China
| | - Guhuan Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026 Anhui, China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026 Anhui, China
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16
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Cokca C, Zartner L, Tabujew I, Fischer D, Peneva K. Incorporation of Indole Significantly Improves the Transfection Efficiency of Guanidinium‐Containing Poly(Methacrylamide)s. Macromol Rapid Commun 2020; 41:e1900668. [DOI: 10.1002/marc.201900668] [Citation(s) in RCA: 9] [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: 12/29/2019] [Revised: 02/03/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Ceren Cokca
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Lessingstraße 8 07743 Jena Germany
| | - Leon Zartner
- Institute of Pharmacy, Pharmaceutical Technology and BiopharmacyFriedrich Schiller University Jena Lessingstraße 8 07743 Jena Germany
| | - Ilja Tabujew
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Lessingstraße 8 07743 Jena Germany
| | - Dagmar Fischer
- Institute of Pharmacy, Pharmaceutical Technology and BiopharmacyFriedrich Schiller University Jena Lessingstraße 8 07743 Jena Germany
- Jena Center of Soft MatterFriedrich Schiller University Jena Philosophenweg 7 07743 Jena Germany
| | - Kalina Peneva
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Lessingstraße 8 07743 Jena Germany
- Jena Center of Soft MatterFriedrich Schiller University Jena Philosophenweg 7 07743 Jena Germany
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17
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Geiselhart CM, Mutlu H, Tzvetkova P, Barner-Kowollik C. Chemiluminescent self-reporting supramolecular transformations on macromolecular scaffolds. Polym Chem 2020. [DOI: 10.1039/d0py00332h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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
We introduce the synthesis of a self-reporting system with chemiluminescent output, which is regulated via dynamic supramolecular complex formation.
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Affiliation(s)
- Christina M. Geiselhart
- Soft Matter Synthesis Laboratory
- Institut für Biologische Grenzflächen 3
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Hatice Mutlu
- Soft Matter Synthesis Laboratory
- Institut für Biologische Grenzflächen 3
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Pavleta Tzvetkova
- Institute for Organic Chemistry and Institute for Biological Interfaces 4 – Magnetic Resonance
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - Christopher Barner-Kowollik
- Macromolecular Architectures
- Institut für Technische Chemie und Polymerchemie
- Karlsruhe Institute of Technology (KIT)
- 76128 Karlsruhe
- Germany
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18
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Abstract
Dynamic covalent polymers have revealed strong potential in gene delivery, thanks to their versatile self-assembly, adaptive and responsive behaviors.
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Affiliation(s)
- Dandan Su
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Maëva Coste
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
| | - Andrei Diaconu
- Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi
- Romania
| | - Mihail Barboiu
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
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19
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Kang Z, Ding G, Meng Z, Meng Q. The rational design of cell-penetrating peptides for application in delivery systems. Peptides 2019; 121:170149. [PMID: 31491454 DOI: 10.1016/j.peptides.2019.170149] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/30/2019] [Accepted: 09/02/2019] [Indexed: 12/20/2022]
Abstract
Cell penetrating peptides (CPPs) play a crucial role in the transportation of bioactive molecules. Although CPPs have been used widely in various delivery systems, further applications of CPPs are hampered by several drawbacks, such as high toxicity, low delivery efficiency, proteolytic instability and poor specificity. To design CPPs with great cell-penetrating ability, physicochemical properties and safety, researchers have tried to develop new methods to overcome the defects of CPPs. Briefly, (1) the side chain of arginine containing the guanidinium group is essential for the facilitation of cellular uptake; (2) the hydrophobic counterion complex around the guanidinium-rich backbone can "coat" the highly cationic structure with lipophilic moieties and act as an activator; (3) the conformation-constrained strategy was pursued to shield the peptide, thereby impeding access of the proteolytic enzyme; (4) targeting strategies can increase cell-type specificity of CPPs. In this review, the above four aspects were discussed in detail.
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Affiliation(s)
- Ziyao Kang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China
| | - Guihua Ding
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China
| | - Zhao Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China
| | - Qingbin Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing, 100850, China; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China; Key Laboratory of Natural Resources and Functional Molecules of the Changbai Mountain, Affiliated Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin, 133002, China.
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20
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Geiselhart CM, Schmitt CW, Jöckle P, Mutlu H, Barner-Kowollik C. A Guanidine-Based Superbase as Efficient Chemiluminescence Booster. Sci Rep 2019; 9:14519. [PMID: 31601903 DOI: 10.1038/s41598-019-51105-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/25/2019] [Indexed: 12/28/2022] Open
Abstract
We introduce the guanidine-based superbase 1,5,7-triaza-bicyclo-[4.4.0]dec-5-ene (TBD) as efficient enabler for chemiluminescence (CL) based on luminol in a simple, ready-to-use two component system. The strong CL is generated by the superbase’s properties as peroxidase mimetic and bifunctional coreactant. The herein established concept allows for CL enabling molecules (superbases) to be readily implemented in larger molecular structures, including in polymers.
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21
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Mohammed F, Ke W, Mukerabigwi JF, M Japir AAWM, Ibrahim A, Wang Y, Zha Z, Lu N, Zhou M, Ge Z. ROS-Responsive Polymeric Nanocarriers with Photoinduced Exposure of Cell-Penetrating Moieties for Specific Intracellular Drug Delivery. ACS Appl Mater Interfaces 2019; 11:31681-31692. [PMID: 31397163 DOI: 10.1021/acsami.9b10950] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In situ modulation of the surface properties on the micellar drug delivery nanocarriers offers an efficient method to improve the drug delivery efficiency into cells while maintaining stealth and stability during blood circulation. Light has been demonstrated to be a temporally and spatially controllable tool to improve cellular internalization of nanoparticles. Herein, we develop reactive oxygen species (ROS)-responsive mixed polymeric micelles with photoinduced exposure of cell-penetrating moieties via photodynamic ROS production, which can facilitate cellular internalization of paclitaxel (PTX) and chlorin e6 (Ce6)-coloaded micelles for the synergistic effect of photodynamic and chemotherapy. The thioketal-bond-linked block polymers poly(ε-caprolactone)-TL-poly(N,N-dimethylacrylamide) (PCL-TL-PDMA) with a long PDMA block are used to self-assemble into mixed micelles with PCL-b-poly(2-guanidinoethyl methacrylate) (PCL-PGEMA) consisting of a short PGEMA block, which are further used to coencapsulate PTX and Ce6. After intravenous injection, prolonged blood circulation of the micelles guarantees high tumor accumulation. Upon irradiation by 660 nm light, ROS production of the micelles by Ce6 induces cleavage of PDMA to expose PGEMA shells for significantly improved cellular internalization. The combination of photodynamic therapy and chemotherapy inside the tumor cells achieves improved antitumor efficacy. The design of ROS-responsive mixed polymeric nanocarriers represents a novel and efficient approach to realize both long blood circulation and high-efficiency cellular internalization for combined photodynamic and chemotherapy under light irradiation.
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Affiliation(s)
- Fathelrahman Mohammed
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
| | - Wendong Ke
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
| | - Jean Felix Mukerabigwi
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
| | - Abd Al-Wali Mohammed M Japir
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
| | - Alhadi Ibrahim
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
| | - Yuheng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
| | - Zengshi Zha
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
| | - Nannan Lu
- Department of Oncology , The First Affiliated Hospital of University of Science and Technology of China , Hefei 230001 , Anhui , China
| | - Min Zhou
- Neurocritical Care Unit, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine , University of Science and Technology of China , Hefei 230001 , Anhui , China
| | - Zhishen Ge
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China
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22
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Kuroki A, Kengmo Tchoupa A, Hartlieb M, Peltier R, Locock KES, Unnikrishnan M, Perrier S. Targeting intracellular, multi-drug resistant Staphylococcus aureus with guanidinium polymers by elucidating the structure-activity relationship. Biomaterials 2019; 217:119249. [PMID: 31279102 DOI: 10.1016/j.biomaterials.2019.119249] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/20/2019] [Accepted: 06/05/2019] [Indexed: 11/29/2022]
Abstract
Intracellular persistence of bacteria represents a clinical challenge as bacteria can thrive in an environment protected from antibiotics and immune responses. Novel targeting strategies are critical in tackling antibiotic resistant infections. Synthetic antimicrobial peptides (SAMPs) are interesting candidates as they exhibit a very high antimicrobial activity. We first compared the activity of a library of ammonium and guanidinium polymers with different sequences (statistical, tetrablock and diblock) synthesized by RAFT polymerization against methicillin-resistant S. aureus (MRSA) and methicillin-sensitive strains (MSSA). As the guanidinium SAMPs were the most potent, they were used to treat intracellular S. aureus in keratinocytes. The diblock structure was the most active, reducing the amount of intracellular MSSA and MRSA by two-fold. We present here a potential treatment for intracellular, multi-drug resistant bacteria, using a simple and scalable strategy.
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Affiliation(s)
- Agnès Kuroki
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | | | - Matthias Hartlieb
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Raoul Peltier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Katherine E S Locock
- CSIRO Manufacturing, Clayton, Victoria, 3168, Australia; Department of Chemical and Biomolecular Engineering, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | | | - Sébastien Perrier
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK; Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK; Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria, 3052, Australia.
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23
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Tabujew I, Cokca C, Zartner L, Schubert US, Nischang I, Fischer D, Peneva K. The influence of gradient and statistical arrangements of guanidinium or primary amine groups in poly(methacrylate) copolymers on their DNA binding affinity. J Mater Chem B 2019; 7:5920-5929. [DOI: 10.1039/c9tb01269a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Herein, we report the first gradient guanidinium containing cationic copolymers and investigate their binding ability to plasmid DNA (pDNA).
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Affiliation(s)
- Ilja Tabujew
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
| | - Ceren Cokca
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
| | - Leon Zartner
- Institute of Pharmacy
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
| | - Ulrich S. Schubert
- Jena Center of Soft Matter
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
| | - Ivo Nischang
- Jena Center of Soft Matter
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Laboratory of Organic and Macromolecular Chemistry (IOMC)
| | - Dagmar Fischer
- Institute of Pharmacy
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center of Soft Matter
| | - Kalina Peneva
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- 07743 Jena
- Germany
- Jena Center of Soft Matter
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24
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D Posey N, N Tew G. Protein Transduction Domain Mimic (PTDM) Self-Assembly? Polymers (Basel) 2018; 10:E1039. [PMID: 30960964 DOI: 10.3390/polym10091039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 09/12/2018] [Accepted: 09/14/2018] [Indexed: 11/24/2022] Open
Abstract
Intracellular protein delivery is an invaluable tool for biomedical research, as it enables fundamental studies of cellular processes and creates opportunities for novel therapeutic development. Protein delivery reagents such as cell penetration peptides (CPPs) and protein transduction domains (PTDs) are frequently used to facilitate protein delivery. Herein, synthetic polymer mimics of PTDs, called PTDMs, were studied for their ability to self-assemble in aqueous media as it was not known whether self-assembly plays a role in the protein binding and delivery process. The results obtained from interfacial tensiometry (IFT), transmission electron microscopy (TEM), transmittance assays (%T), and dynamic light scattering (DLS) indicated that PTDMs do not readily aggregate or self-assemble at application-relevant time scales and concentrations. However, additional DLS experiments were used to confirm that the presence of protein is required to induce the formation of PTDM-protein complexes and that PTDMs likely bind as single chains.
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25
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Martin L, Peltier R, Kuroki A, Town JS, Perrier S. Investigating Cell Uptake of Guanidinium-Rich RAFT Polymers: Impact of Comonomer and Monomer Distribution. Biomacromolecules 2018; 19:3190-3200. [DOI: 10.1021/acs.biomac.8b00146] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
| | | | | | | | - Sébastien Perrier
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
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26
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Christiaens O, Tardajos MG, Martinez Reyna ZL, Dash M, Dubruel P, Smagghe G. Increased RNAi Efficacy in Spodoptera exigua via the Formulation of dsRNA With Guanylated Polymers. Front Physiol 2018; 9:316. [PMID: 29670535 PMCID: PMC5894468 DOI: 10.3389/fphys.2018.00316] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [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: 12/15/2017] [Accepted: 03/14/2018] [Indexed: 11/23/2022] Open
Abstract
Lepidoptera comprise some of the most devastating herbivorous pest insects worldwide. One of the most promising novel pest control strategies is exploiting the RNA interference (RNAi) mechanism to target essential genes for knockdown and incite toxic effects in the target species without harming other organisms in the ecosystem. However, many insects are refractory to oral RNAi, often due to rapid degradation of ingested dsRNA in their digestive system. This is the case for many lepidopteran insects, including the beet armyworm Spodoptera exigua, which is characterized by a very alkaline gut environment (pH > 9.0) and a strong intestinal nucleolytic activity. In this research, guanidine-containing polymers were developed to protect dsRNA against nucleolytic degradation, specifically in high pH environments. First, their ability to protect dsRNA against nucleolytic degradation in gut juice of the beet armyworm S. exigua was investigated ex vivo. Polymers with high guanidine content provided a strong protection against nucleolytic degradation at pH 11, protecting the dsRNA for up to 30 h. Next, cellular uptake of the dsRNA and the polyplexes in lepidopteran CF203 midgut cells was investigated by confocal microscopy, showing that the polymer also enhanced cellular uptake of the dsRNA. Finally, in vivo feeding RNAi bioassays demonstrated that using these guanidine-containing polymer nanoparticles led to an increased RNAi efficiency in S. exigua. Targeting the essential gene chitin synthase B, we observed that the mortality increased to 53% in the polymer-protected dsRNA treatment compared to only 16% with the naked dsRNA and found that polymer-protected dsRNA completely halted the development of the caterpillars. These results show that using guanylated polymers as a formulation strategy can prevent degradation of dsRNA in the alkaline and strongly nucleolytic gut of lepidopteran insects. Furthermore, the polymer also enhances cellular uptake in lepidopteran midgut cells. This new delivery strategy could be of great use in further fundamental research in lepidopterans, using RNAi as a research tool, and could lead to future applications for RNAi-based pest control of lepidopteran insects.
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Affiliation(s)
- Olivier Christiaens
- Laboratory of Agrozoology, Department of Crop Protection, Ghent University, Ghent, Belgium
| | - Myriam G. Tardajos
- Polymer Biochemistry and Biomaterials Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Gent, Belgium
| | | | - Mamoni Dash
- Polymer Biochemistry and Biomaterials Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Gent, Belgium
| | - Peter Dubruel
- Polymer Biochemistry and Biomaterials Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Gent, Belgium
| | - Guy Smagghe
- Laboratory of Agrozoology, Department of Crop Protection, Ghent University, Ghent, Belgium
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27
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Abstract
RNAi-based technologies are ideal for pest control as they can provide species specificity and spare nontarget organisms. However, in some pests biological barriers prevent use of RNAi, and therefore broad application. In this study we tested the ability of a synthetic cationic polymer, poly-[ N-(3-guanidinopropyl)methacrylamide] (pGPMA), that mimics arginine-rich cell penetrating peptides to trigger RNAi in an insensitive animal- Spodoptera frugiperda. Polymer-dsRNA interpolyelectrolyte complexes (IPECs) were found to be efficiently taken up by cells, and to drive highly efficient gene knockdown. These IPECs could also trigger target gene knockdown and moderate larval mortality when fed to S. frugiperda larvae. This effect was sequence specific, which is consistent with the low toxicity we found to be associated with this polymer. A method for oral delivery of dsRNA is critical to development of RNAi-based insecticides. Thus, this technology has the potential to make RNAi-based pest control useful for targeting numerous species and facilitate use of RNAi in pest management practices.
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Affiliation(s)
- Keith H Parsons
- Department of Polymer Science and Engineering , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
| | - Mosharrof H Mondal
- Department of Biological Sciences , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
| | - Charles L McCormick
- Department of Polymer Science and Engineering , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States.,Department of Chemistry and Biochemistry , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
| | - Alex S Flynt
- Department of Biological Sciences , The University of Southern Mississippi , Hattiesburg , Mississippi 39406 , United States
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28
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Zhang H, Liu Y, Luo T, Zhao Q, Cui K, Huang J, Jiang T, Ma Z. Synthesis of novel guanidine-based ABA triblock copolymers and their antimicrobial honeycomb films. Polym Chem 2018. [DOI: 10.1039/c8py00732b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Novel antimicrobial poly(methacryl guanidine hydrochloride)-block-polystyrene-block-poly(methacryl guanidine hydrochloride) triblock copolymers were synthesizedviaRAFT polymerization and fabricated into antimicrobial honeycomb films.
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Affiliation(s)
- Hao Zhang
- College of Chemical Engineering and Materials Science
- Tianjin University of Science & Technology
- Tianjin 300457
- P. R. China
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
| | - Yanna Liu
- College of Biotechnology
- Tianjin University of Science & Technology
- Tianjin 300457
- P. R. China
| | - Ting Luo
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Qiaoling Zhao
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Kun Cui
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Jin Huang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Tao Jiang
- College of Chemical Engineering and Materials Science
- Tianjin University of Science & Technology
- Tianjin 300457
- P. R. China
| | - Zhi Ma
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
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29
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Abstract
Knowledge of the interactions between nanoparticles (NPs) and cell membranes is of great importance for the design of safe and efficient nanomedicines.
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Affiliation(s)
- Jiacheng Zhao
- Centre for Advanced Macromolecular Design
- The University of New South Wales
- Sydney
- Australia
- School of Chemical Engineering
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular Design
- The University of New South Wales
- Sydney
- Australia
- School of Chemistry
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30
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Tan Z, Dhande YK, Reineke TM. Cell Penetrating Polymers Containing Guanidinium Trigger Apoptosis in Human Hepatocellular Carcinoma Cells unless Conjugated to a Targeting N-Acetyl-Galactosamine Block. Bioconjug Chem 2017; 28:2985-2997. [DOI: 10.1021/acs.bioconjchem.7b00598] [Citation(s) in RCA: 16] [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] [Indexed: 01/21/2023]
Affiliation(s)
- Zhe Tan
- Department
of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Yogesh K. Dhande
- Department
of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Theresa M. Reineke
- Department
of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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31
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Ma H, Jiang C. Dehydroascorbic Acid and pGPMA Dual Modified pH-Sensitive Polymeric Micelles for Target Treatment of Liver Cancer. J Pharm Sci 2017; 107:595-603. [PMID: 29024701 DOI: 10.1016/j.xphs.2017.09.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/07/2017] [Accepted: 09/11/2017] [Indexed: 11/30/2022]
Abstract
In clinical therapy, the poor prognosis of hepatocellular carcinoma (HCC) is mainly attributed to the failure of chemotherapeutical agents to accumulate in tumor as well as lack of potency of tumor penetration. In this work, we developed actively tumor-targeting micelles with pH-sensitive linker as a novel nanocarrier for HCC therapy. These micelles comprised biodegradable poly(ethylene glycol)-poly(aspartate) polymers, in which paclitaxel can be covalently conjugated to pAsp via an acid-labile acetal bond to form pH-responsive structures. In vitro drug release studies showed that these structures were stable in physiological condition, whereas collapsed once internalized into cells due to the mildly acidic environment in endo/lysosomes, resulting in facilitated intracellular paclitaxel release. In addition, dehydroascorbic acid and guanidinopropyl methacrylamide polymers were decorated on the surface of micelles to achieve specific tumor accumulation and tumor penetration. Cellular uptake and in vivo imaging studies proved that these micelles had remarkable targeting property toward hepatocarcinoma cells and tumor. Enhanced anti-HCC efficacy of the micelles was also confirmed both in vitro and in vivo. Therefore, this micellar system may be a potential platform of chemotherapeutics delivery for HCC therapy.
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Affiliation(s)
- Haojun Ma
- Key Laboratory of Smart Drug Delivery, Ministry of Education, Department of Pharmaceutics, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Chen Jiang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, Department of Pharmaceutics, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China; State Key Laboratory of Medical Neurobiology, Fudan University, 138 Yixueyuan Road, Shanghai 200032, China.
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32
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Li J, Xiao S, Xu Y, Zuo S, Zha Z, Ke W, He C, Ge Z. Smart Asymmetric Vesicles with Triggered Availability of Inner Cell-Penetrating Shells for Specific Intracellular Drug Delivery. ACS Appl Mater Interfaces 2017; 9:17727-17735. [PMID: 28489341 DOI: 10.1021/acsami.7b02808] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Smart nanocarriers attract considerable interest in the filed of precision nanomedicine. Dynamic control of the interaction between nanocarriers and cells offers the feasibility that in situ activates cellular internalization at the targeting sites. Herein, we demonstrate a novel class of enzyme-responsive asymmetric polymeric vesicles self-assembled from matrix metalloproteinase (MMP)-cleavable peptide-linked triblock copolymer, poly(ethylene glycol)-GPLGVRG-b-poly(ε-caprolactone)-b-poly(3-guanidinopropyl methacrylamide) (PEG-GPLGVRG-PCL-PGPMA), in which the cell-penetrating PGPMA segments asymmetrically distribute in the outer and inner shells with fractions of 9% and 91%, respectively. Upon treatment with MMP-2 to cleave the stealthy PEG shell, the vesicles undergo morphological transformation into fused multicavity vesicles and small nanoparticles, accompanied by redistribution of PGPMA segments with 76% exposed to the outside. The vesicles after dePEGylation show significantly increased cellular internalization efficiency (∼10 times) as compared to the original ones due to the triggered availability of cell-penetrating shells. The vesicles loading hydrophobic anticancer drug paclitaxel (PTX) in the membrane exhibit significantly enhanced cytotoxicity against MMP-overexpressing HT1080 cells and multicellular spheroids. The proposed vesicular system can serve as a smart nanoplatform for in situ activating intracellular drug delivery in MMP-enriched tumors.
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Affiliation(s)
- Junjie Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026 Anhui, China
| | - Shiyan Xiao
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026 Anhui, China
| | - Yixuan Xu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026 Anhui, China
| | - Shuai Zuo
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026 Anhui, China
| | - Zengshi Zha
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026 Anhui, China
| | - Wendong Ke
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026 Anhui, China
| | - Chuanxin He
- College of Chemistry and Environmental Engineering, Shenzhen University , Shenzhen, Guangdong 518060, People's Republic of China
| | - Zhishen Ge
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026 Anhui, China
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33
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Sarapas JM, Backlund CM, deRonde BM, Minter LM, Tew GN. ROMP- and RAFT-Based Guanidinium-Containing Polymers as Scaffolds for Protein Mimic Synthesis. Chemistry 2017; 23:6858-6863. [PMID: 28370636 PMCID: PMC5551038 DOI: 10.1002/chem.201700423] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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] [Received: 01/27/2017] [Indexed: 01/21/2023]
Abstract
Cell-penetrating peptides are an important class of molecules with promising applications in bioactive cargo delivery. A diverse series of guanidinium-containing polymeric cell-penetrating peptide mimics (CPPMs) with varying backbone chemistries was synthesized and assessed for delivery of both GFP and fluorescently tagged siRNA. Specifically, we examined CPPMs based on norbornene, methacrylate, and styrene backbones to determine how backbone structure impacted internalization of these two cargoes. Either charge content or degree of polymerization was held constant at 20, with diguanidinium norbornene molecules being polymerized to both 10 and 20 repeat units. Generally, homopolymer CPPMs delivered low amounts of siRNA into Jurkat T cells, with no apparent backbone dependence; however, by adding a short hydrophobic methyl methacrylate block to the guanidinium-rich methacrylate polymer, siRNA delivery to nearly the entire cell population was achieved. Protein internalization yielded similar results for most of the CPPMs, though the block polymer was unable to deliver proteins. In contrast, the styrene-based CPPM yielded the highest internalization for GFP (≈40 % of cells affected), showing that indeed backbone chemistry impacts protein delivery, specifically through the incorporation of an aromatic group. These results demonstrate that an understanding of how polymer structure affects cargo-dependent internalization is critical to designing new, more effective CPPMs.
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Affiliation(s)
- Joel M Sarapas
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Coralie M Backlund
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Brittany M deRonde
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Lisa M Minter
- Department of Molecular and Cellular Biology, Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
- Department of Veterinary and Animal Sciences, Department of Molecular and Cellular Biology, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Gregory N Tew
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003, USA
- Department of Molecular and Cellular Biology, Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
- Department of Veterinary and Animal Sciences, Department of Molecular and Cellular Biology, University of Massachusetts Amherst, Amherst, MA, 01003, USA
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34
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Yadav AK, Dey N, Chattopadhyay S, Ganguli M, Fernandes M. Dendrimeric amide- and carbamate-linked lysine-based efficient molecular transporters. Org Biomol Chem 2017; 15:9579-9584. [DOI: 10.1039/c7ob02552a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbamate- and amide-linked lysine-based generation-2 dendrimeric oligomers transport pDNA into cells very efficiently when complexed by incubation overnight.
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Affiliation(s)
- Amit Kumar Yadav
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Namit Dey
- CSIR-Institute of Genomics and Integrative Biology
- New Delhi 110020
- India
| | | | - Munia Ganguli
- Academy of Scientific and Innovative Research (AcSIR)
- Pune
- India
- CSIR-Institute of Genomics and Integrative Biology
- New Delhi 110020
| | - Moneesha Fernandes
- Organic Chemistry Division
- CSIR-National Chemical Laboratory (CSIR-NCL)
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
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35
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Abstract
A fundamental understanding of how polymer structure impacts internalization and delivery of biologically relevant cargoes, particularly small interfering ribonucleic acid (siRNA), is of critical importance to the successful design of improved delivery reagents. Herein we report the use of ring-opening metathesis polymerization (ROMP) methods to synthesize two series of guanidinium-rich protein transduction domain mimics (PTDMs): one based on an imide scaffold that contains one guanidinium moiety per repeat unit, and another based on a diester scaffold that contains two guanidinium moieties per repeat unit. By varying both the degree of polymerization and, in effect, the relative number of cationic charges in each PTDM, the performances of the two ROMP backbones for siRNA internalization were evaluated and compared. Internalization of fluorescently labeled siRNA into Jurkat T cells demonstrated that fluorescein isothiocyanate (FITC)-siRNA internalization had a charge content dependence, with PTDMs containing approximately 40 to 60 cationic charges facilitating the most internalization. Despite this charge content dependence, the imide scaffold yielded much lower viabilities in Jurkat T cells than the corresponding diester PTDMs with similar numbers of cationic charges, suggesting that the diester scaffold is preferred for siRNA internalization and delivery applications. These developments will not only improve our understanding of the structural factors necessary for optimal siRNA internalization, but will also guide the future development of optimized PTDMs for siRNA internalization and delivery.
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Affiliation(s)
- Leah M Caffrey
- Department of Polymer Science and Engineering, ‡Department of Veterinary and Animal Sciences, and §Molecular and Cellular Biology Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Brittany M deRonde
- Department of Polymer Science and Engineering, ‡Department of Veterinary and Animal Sciences, and §Molecular and Cellular Biology Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Lisa M Minter
- Department of Polymer Science and Engineering, ‡Department of Veterinary and Animal Sciences, and §Molecular and Cellular Biology Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Gregory N Tew
- Department of Polymer Science and Engineering, ‡Department of Veterinary and Animal Sciences, and §Molecular and Cellular Biology Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
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36
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Parsons KH, Holley AC, Munn GA, Flynt AS, McCormick CL. Block ionomer complexes consisting of siRNA and aRAFT-synthesized hydrophilic- block-cationic copolymers II: The influence of cationic block charge density on gene suppression. Polym Chem 2016; 7:6044-6054. [PMID: 28239425 DOI: 10.1039/c6py01048b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Block ionomer complex (BIC)-siRNA interactions and effectiveness in cell transfection are reported. Aqueous RAFT polymerization was used to prepare a series of hydrophilic-block-cationic copolymers in which the cationic block statistically incorporates increasing amounts of neutral, hydrophilic monomer such that the number of cationic groups remains unchanged but the cationic charge density is diluted along the polymer backbone. Reduced charge density decreases the electrostatic binding strength between copolymers and siRNA with the goal of improving siRNA release after targeted cellular delivery. However, lower binding strength resulted in decreased transfection and RNA interference pathway activation, leading to reduced gene knockdown. Enzymatic siRNA degradation studies with BICs indicated lowered binding strength increases susceptibility to RNases, which is the likely cause for poor gene knockdown.
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Affiliation(s)
- Keith H Parsons
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA
| | - Andrew C Holley
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA
| | - Gabrielle A Munn
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA
| | - Alex S Flynt
- Department of Biological Sciences, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
| | - Charles L McCormick
- Department of Polymer Science and Engineering, The University of Southern, Mississippi, Hattiesburg, MS 39406, USA; Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, MS 39406, USA
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37
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Khine YY, Callari M, Lu H, Stenzel MH. Direct Correlation Between Zeta Potential and Cellular Uptake of Poly(methacrylic acid) Post‐Modified with Guanidinium Functionalities. MACROMOL CHEM PHYS 2016; 217:2302-9. [DOI: 10.1002/macp.201600161] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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38
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McKinlay CJ, Waymouth RM, Wender PA. Cell-Penetrating, Guanidinium-Rich Oligophosphoesters: Effective and Versatile Molecular Transporters for Drug and Probe Delivery. J Am Chem Soc 2016; 138:3510-7. [PMID: 26900771 DOI: 10.1021/jacs.5b13452] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The design, synthesis, and biological evaluation of a new family of highly effective cell-penetrating molecular transporters, guanidinium-rich oligophosphoesters, are described. These unique transporters are synthesized in two steps, irrespective of oligomer length, by the organocatalytic ring-opening polymerization (OROP) of 5-membered cyclic phospholane monomers followed by oligomer deprotection. Varying the initiating alcohol results in a wide variety of cargo attachment strategies for releasable or nonreleasable transporter applications. Initiation of oligomerization with a fluorescent probe produces, upon deprotection, a transporter-probe conjugate that is shown to readily enter multiple cell lines in a dose-dependent manner. These new transporters are superior in cell uptake to previously studied guanidinium-rich oligocarbonates and oligoarginines, showing over 2-fold higher uptake than the former and 6-fold higher uptake than the latter. Initiation with a protected thiol gives, upon deprotection, thiol-terminated transporters which can be thiol-click conjugated to a variety of probes, drugs and other cargos as exemplified by the conjugation and delivery of the model probe fluorescein-maleimide and the medicinal agent paclitaxel (PTX) into cells. Of particular significance given that drug resistance is a major cause of chemotherapy failure, the PTX-transporter conjugate, designed to evade Pgp export and release free PTX after cell entry, shows efficacy against PTX-resistant ovarian cancer cells. Collectively this study introduces a new and highly effective class of guanidinium-rich cell-penetrating transporters and methodology for their single-step conjugation to drugs and probes, and demonstrates that the resulting drug/probe-conjugates readily enter cells, outperforming previously reported guanidinium-rich oligocarbonates and peptide transporters.
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Affiliation(s)
- Colin J McKinlay
- Department of Chemistry and ‡Department of Chemical and Systems Biology, Stanford University , Stanford, California 94305, United States
| | - Robert M Waymouth
- Department of Chemistry and ‡Department of Chemical and Systems Biology, Stanford University , Stanford, California 94305, United States
| | - Paul A Wender
- Department of Chemistry and ‡Department of Chemical and Systems Biology, Stanford University , Stanford, California 94305, United States
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39
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Exley SE, Paslay LC, Sahukhal GS, Abel BA, Brown TD, McCormick CL, Heinhorst S, Koul V, Choudhary V, Elasri MO, Morgan SE. Antimicrobial Peptide Mimicking Primary Amine and Guanidine Containing Methacrylamide Copolymers Prepared by Raft Polymerization. Biomacromolecules 2015; 16:3845-52. [PMID: 26558609 DOI: 10.1021/acs.biomac.5b01162] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Naturally occurring antimicrobial peptides (AMPs) display the ability to eliminate a wide variety of bacteria, without toxicity to the host eukaryotic cells. Synthetic polymers containing moieties mimicking lysine and arginine components found in AMPs have been reported to show effectiveness against specific bacteria, with the mechanism of activity purported to depend on the nature of the amino acid mimic. In an attempt to incorporate the antimicrobial activity of both amino acids into a single water-soluble copolymer, a series of copolymers containing lysine mimicking aminopropyl methacrylamide (APMA) and arginine mimicking guanadinopropyl methacrylamide (GPMA) were prepared via aqueous RAFT polymerization. Copolymers were prepared with varying ratios of the comonomers, with degree of polymerization of 35-40 and narrow molecular weight distribution to simulate naturally occurring AMPs. Antimicrobial activity was determined against Gram-negative and Gram-positive bacteria under conditions with varying salt concentration. Toxicity to mammalian cells was assessed by hemolysis of red blood cells and MTT assays of MCF-7 cells. Antimicrobial activity was observed for APMA homopolymer and copolymers with low concentrations of GPMA against all bacteria tested, with low toxicity toward mammalian cells.
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Affiliation(s)
- Sarah E Exley
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Lea C Paslay
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Gyan S Sahukhal
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Brooks A Abel
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Tyler D Brown
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Charles L McCormick
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Sabine Heinhorst
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Veena Koul
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Veena Choudhary
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Mohamed O Elasri
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
| | - Sarah E Morgan
- School of Polymers and High Performance Materials, ‡Biological Sciences, and §Department of Chemistry and Biochemistry, The University of Southern Mississippi , Hattiesburg, Mississippi 39406, United States.,Center for Biomedical Engineering, and #Center for Polymer Science and Engineering, Indian Institute of Technology , Delhi, New Delhi 110016, India
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40
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deRonde BM, Torres JA, Minter LM, Tew GN. Development of Guanidinium-Rich Protein Mimics for Efficient siRNA Delivery into Human T Cells. Biomacromolecules 2015; 16:3172-9. [PMID: 26324222 DOI: 10.1021/acs.biomac.5b00795] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
RNA interference is gaining attention as a means to explore new molecular pathways and for its potential as a therapeutic; however, its application in immortal and primary T cells is limited due to challenges with efficient delivery in these cell types. Herein, we report the development of guanidinium-rich protein transduction domain mimics (PTDMs) based on a ring-opening metathesis polymerization scaffold that delivers siRNA into Jurkat T cells and human peripheral blood mononuclear cells (hPBMCs). Homopolymer and block copolymer PTDMs with varying numbers of guanidinium moieties were designed and tested to assess the effect cationic charge content and the addition of a segregated, hydrophobic block had on siRNA internalization and delivery. Internalization of fluorescently labeled siRNA into Jurkat T cells illustrates that the optimal cationic charge content, 40 charges per polymer, leads to higher efficiencies, with block copolymers outperforming their homopolymer counterparts. PTDMs also outperformed commercial reagents commonly used for siRNA delivery applications. Select PTDM candidates were further screened to assess the role the PTDM structure has on the delivery of biologically active siRNA into primary cells. Specifically, siRNA to hNOTCH1 was delivered to hPBMCs enabling 50-80% knockdown efficiencies, with longer PTDMs showing improved protein reduction. By evaluating the PTDM design parameters for siRNA delivery, more efficient PTDMs were discovered that improved delivery and gene (NOTCH) knockdown in T cells. Given the robust delivery of siRNA by these novel PTDMs, their development should aid in the exploration of T cell molecular pathways leading eventually to new therapeutics.
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Affiliation(s)
- Brittany M deRonde
- Department of Polymer Science and Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Joe A Torres
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.,Molecular and Cellular Biology Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Lisa M Minter
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.,Molecular and Cellular Biology Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Gregory N Tew
- Department of Polymer Science and Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.,Department of Veterinary and Animal Sciences, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States.,Molecular and Cellular Biology Program, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
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41
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Abstract
Designing delivery agents for therapeutics is an ongoing challenge. As treatments and desired cargoes become more complex, the need for improved delivery vehicles becomes critical. Excellent delivery vehicles must ensure the stability of the cargo, maintain the cargo's solubility, and promote efficient delivery and release. In order to address these issues, many research groups have looked to nature for design inspiration. Proteins, such as HIV-1 trans-activator of transcription (TAT) and Antennapedia homeodomain protein, are capable of crossing cellular membranes. However, due to the complexities of their structures, they are synthetically challenging to reproduce in the laboratory setting. Being able to incorporate the key features of these proteins that enable cell entry into simpler scaffolds opens up a wide range of opportunities for the development of new delivery reagents with improved performance. This review charts the development of protein mimics based on cell-penetrating peptides (CPPs) and how structure-activity relationships (SARs) with these molecules and their protein counterparts ultimately led to the use of polymeric scaffolds. These scaffolds deviate from the normal peptide backbone, allowing for simpler, synthetic procedures to make carriers and tune chemical compositions for application specific needs. Successful design of polymeric protein mimics would allow researchers to further understand the key features in proteins and peptides necessary for efficient delivery and to design the next generation of more efficient delivery reagents.
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Affiliation(s)
- Brittany M deRonde
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003
| | - Gregory N Tew
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, MA, 01003
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, 01003
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Amherst, MA, 01003
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42
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Lane D, Su F, Chiu D, Srinivasan S, Wilson J, Ratner D, Stayton P, Convertine A. Dynamic intracellular delivery of antibiotics via pH-responsive polymersomes. Polym Chem 2015; 6:1255-1266. [PMID: 26097513 PMCID: PMC4470576 DOI: 10.1039/c4py01249f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Reversible addition-fragmentation chain transfer (RAFT) polymerization was employed to prepare a series of copolymers consisting of 2-hdroxyethyl methacrylate (HEMA) and poly(ethylene glycol) methyl ether methacrylate (FWavg ~ 950 Da) (O950) with variable comonomer compositions and molecular weights for use as polymeric scaffolds. Reactivity ratios for the monomer pair were determined to be 1.37 and 0.290 respectively. To these scaffolds trithiocarbonate-based RAFT chain transfer agents (CTAs) were grafted using carbodiimide chemistry. The resultant graft chain transfer agents (gCTA) were subsequently employed to polymerize dimethylaminoethyl methacrylate (DMAEMA) and (HPMA) between degrees of polymerization (DP) of 25 and 200. Kinetic analysis for the polymerization of DMAEMA targeting a DP of 100 from a 34 arm graft gCTA show linear Mn conversion and pseudo first order rate plots with narrow molecular weight distributions that move toward lower elution volumes with monomer conversion. Đ values for these polymerizations remain low at around 1.20 at monomer conversions as high as 70 %. pH-responsive endosomalytic brushes capable of spontaneously self-assembling into polymersomes were synthesized and a combination of dynamic light scattering (DLS), cryoTEM, and red blood cell hemolysis were employed to evaluate the aqueous solution properties of the polymeric brush as a function of pH. Successful encapsulation of ceftazidime and pH-dependent drug release properties were confirmed by HPLC. Intracellular antibiotic activity of the drug-loaded polymersomes was confirmed in a macrophage coculture model of infection with B. thailandensis and RAW 264.7 cells.
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Affiliation(s)
| | | | | | | | | | | | | | - A.J. Convertine
- Molecular Engineering and Sciences Institute, Department of Bioengineering, Box 355061, Seattle, WA, 98195, USA. ; Fax: +1 (206) 685 8526; Tel: +1 (206) 221 5113
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Hu X, Liu G, Li Y, Wang X, Liu S. Cell-penetrating hyperbranched polyprodrug amphiphiles for synergistic reductive milieu-triggered drug release and enhanced magnetic resonance signals. J Am Chem Soc 2014; 137:362-8. [PMID: 25495130 DOI: 10.1021/ja5105848] [Citation(s) in RCA: 282] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The rational design of theranostic nanoparticles exhibiting synergistic turn-on of therapeutic potency and enhanced diagnostic imaging in response to tumor milieu is critical for efficient personalized cancer chemotherapy. We herein fabricate self-reporting theranostic drug nanocarriers based on hyperbranched polyprodrug amphiphiles (hPAs) consisting of hyperbranched cores conjugated with reduction-activatable camptothecin prodrugs and magnetic resonance (MR) imaging contrast agent (Gd complex), and hydrophilic coronas functionalized with guanidine residues. Upon cellular internalization, reductive milieu-actuated release of anticancer drug in the active form, activation of therapeutic efficacy (>70-fold enhancement in cytotoxicity), and turn-on of MR imaging (∼9.6-fold increase in T1 relaxivity) were simultaneously achieved in the simulated cytosol milieu. In addition, guanidine-decorated hPAs exhibited extended blood circulation with a half-life up to ∼9.8 h and excellent tumor cell penetration potency. The hyperbranched chain topology thus provides a novel theranostic polyprodrug platform for synergistic imaging/chemotherapy and enhanced tumor uptake.
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Affiliation(s)
- Xianglong Hu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei, Anhui 230026, China
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Abstract
A bisphosphonate derived ligand was successfully synthesized and grafted from the surface of regenerated cellulose membrane using atom transfer radical polymerization (ATRP) for protein separations. This ligand has a remarkable affinity for arginine (Arg) residues on protein surface. Hydrophilic residues N-(2-hydroxypropyl) methacrylamide (HPMA) was copolymerized to enhance the flexibility of the copolymer ligand and further improve specific protein adsorption. The polymerization of bisphosphonate derivatives was successful for the first time using ATRP. Static and dynamic binding capacities were determined for binding and elution of Arg rich lysozyme. The interaction mechanism between the copolymer ligand and lysozyme was elucidated using classical molecular dynamics (MD) simulations.
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Affiliation(s)
- Zizhao Liu
- Department of Chemical Engineering and ‡Department of Biomedical Engineering, University of Arkansas , Fayetteville, Arkansas 72701, United States
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Holley AC, Parsons KH, Wan W, Lyons DF, Bishop GR, Correia JJ, Huang F, McCormick CL. Block ionomer complexes consisting of siRNA and aRAFT-synthesized hydrophilic-block-cationic copolymers: the influence of cationic block length on gene suppression. Polym Chem 2014. [DOI: 10.1039/c4py00940a] [Citation(s) in RCA: 11] [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: 01/02/2023]
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Gasparini G, Bang EK, Molinard G, Tulumello DV, Ward S, Kelley SO, Roux A, Sakai N, Matile S. Cellular Uptake of Substrate-Initiated Cell-Penetrating Poly(disulfide)s. J Am Chem Soc 2014; 136:6069-74. [DOI: 10.1021/ja501581b] [Citation(s) in RCA: 178] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Giulio Gasparini
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
| | - Eun-Kyoung Bang
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
| | - Guillaume Molinard
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
| | - David V. Tulumello
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
- Department
of Pharmaceutical Sciences and Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 3M2, Canada
| | - Sandra Ward
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
| | - Shana O. Kelley
- Department
of Pharmaceutical Sciences and Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 3M2, Canada
| | - Aurelien Roux
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
| | - Naomi Sakai
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
| | - Stefan Matile
- School
of Chemistry and Biochemistry, National Centre of Competence in Research
(NCCR) Chemical Biology, University of Geneva, Geneva 1211, Switzerland
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Tabujew I, Freidel C, Krieg B, Helm M, Koynov K, Müllen K, Peneva K. The Guanidinium Group as a Key Part of Water-Soluble Polymer Carriers for siRNA Complexation and Protection against Degradation. Macromol Rapid Commun 2014; 35:1191-7. [DOI: 10.1002/marc.201400120] [Citation(s) in RCA: 23] [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: 02/20/2014] [Indexed: 01/15/2023]
Affiliation(s)
- Ilja Tabujew
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Christoph Freidel
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Bettina Krieg
- Johannes Gutenberg-Universität Mainz, Institute of Pharmacy and Biochemistry; Staudinger Weg 5 55128 Mainz Germany
| | - Mark Helm
- Johannes Gutenberg-Universität Mainz, Institute of Pharmacy and Biochemistry; Staudinger Weg 5 55128 Mainz Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Klaus Müllen
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Kalina Peneva
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
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Timin AS, Solomonov AV, Rumyantsev EV. Polyacrylate guanidine and polymethacrylate guanidine as novel cationic polymers for effective bilirubin binding. J Polym Res 2014. [DOI: 10.1007/s10965-014-0400-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kurtulus I, Yilmaz G, Ucuncu M, Emrullahoglu M, Becer CR, Bulmus V. A new proton sponge polymer synthesized by RAFT polymerization for intracellular delivery of biotherapeutics. Polym Chem 2014. [DOI: 10.1039/c3py01244a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [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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Abd Karim KJ, Utama RH, Lu H, Stenzel MH. Enhanced drug toxicity by conjugation of platinum drugs to polymers with guanidine containing zwitterionic functional groups that mimic cell-penetrating peptides. Polym Chem 2014. [DOI: 10.1039/c4py00802b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Inspired by the Ringsdorf model, statistical copolymers with solubility enhancers, platinum drugs and groove binders were compared.
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Affiliation(s)
- Khairil Juhanni Abd Karim
- Centre for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney 2052, Australia
- Department of Chemistry
| | - Robert H. Utama
- Centre for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney 2052, Australia
| | - Hongxu Lu
- Centre for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney 2052, Australia
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular Design
- School of Chemistry
- University of New South Wales
- Sydney 2052, Australia
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