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Guerassimoff L, Ferrere M, Bossion A, Nicolas J. Stimuli-sensitive polymer prodrug nanocarriers by reversible-deactivation radical polymerization. Chem Soc Rev 2024; 53:6511-6567. [PMID: 38775004 PMCID: PMC11181997 DOI: 10.1039/d2cs01060g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Indexed: 06/18/2024]
Abstract
Polymer prodrugs are based on the covalent linkage of therapeutic molecules to a polymer structure which avoids the problems and limitations commonly encountered with traditional drug-loaded nanocarriers in which drugs are just physically entrapped (e.g., burst release, poor drug loadings). In the past few years, reversible-deactivation radical polymerization (RDRP) techniques have been extensively used to design tailor-made polymer prodrug nanocarriers. This synthesis strategy has received a lot of attention due to the possibility of fine tuning their structural parameters (e.g., polymer nature and macromolecular characteristics, linker nature, physico-chemical properties, functionalization, etc.), to achieve optimized drug delivery and therapeutic efficacy. In particular, adjusting the nature of the drug-polymer linker has enabled the easy synthesis of stimuli-responsive polymer prodrugs for efficient spatiotemporal drug release. In this context, this review article will give an overview of the different stimuli-sensitive polymer prodrug structures designed by RDRP techniques, with a strong focus on the synthesis strategies, the macromolecular architectures and in particular the drug-polymer linker, which governs the drug release kinetics and eventually the therapeutic effect. Their biological evaluations will also be discussed.
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Affiliation(s)
- Léa Guerassimoff
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 91400, Orsay, France.
| | - Marianne Ferrere
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 91400, Orsay, France.
| | - Amaury Bossion
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 91400, Orsay, France.
| | - Julien Nicolas
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 91400, Orsay, France.
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2
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Kannaujiya VK, Qiao Y, Sheikh RH, Xue J, Dargaville TR, Liang K, Wich PR. pH-Responsive Micellar Nanoparticles for the Delivery of a Self-Amplifying ROS-Activatable Prodrug. Biomacromolecules 2024; 25:1775-1789. [PMID: 38377594 DOI: 10.1021/acs.biomac.3c01240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The objective of this study is to enhance the therapeutic efficacy of the anticancer drug, camptothecin (CPT) via a nanoparticle (NP) formulation using a novel amphiphilic biopolymer. We have designed a dimeric prodrug of CPT with the ability to self-amplify and respond to reactive oxygen species (ROS). For this, we incorporated the intracellular ROS generator cinnamaldehyde into a ROS-cleavable thioacetal (TA) linker to obtain the dimeric prodrug of CPT (DCPT(TA)). For its efficient NP delivery, a pH-responsive block copolymer of acetalated dextran and poly(2-ethyl-2-oxazoline) (AcDex-b-PEOz) was synthesized. The amphiphilic feature of the block copolymer enables its self-assembly into micellar NPs and results in high prodrug loading capacity and a rapid release of the prodrug under acidic conditions. Upon cellular uptake by HeLa cells, DCPT(TA)-loaded micellar NPs induce intracellular ROS generation, resulting in accelerated prodrug activation and enhanced cytotoxicity. These results indicate that this system holds significant potential as an effective prodrug delivery strategy in anticancer treatment.
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Affiliation(s)
- Vinod K Kannaujiya
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Yijie Qiao
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Rakib H Sheikh
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Jueyi Xue
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Tim R Dargaville
- ARC Centre for Cell & Tissue Engineering Technologies, QUT Centre for Materials Science, School of Chemistry and Physics, Faculty of Science, Queensland University of Technology (QUT), Brisbane 4000, Australia
| | - Kang Liang
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney 2052, New South Wales, Australia
| | - Peter R Wich
- School of Chemical Engineering, University of New South Wales, Sydney 2052, New South Wales, Australia
- Australian Centre for Nanomedicine, University of New South Wales, Sydney 2052, New South Wales, Australia
- Centre for Advanced Macromolecular Design, University of New South Wales, Sydney 2052, New South Wales, Australia
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3
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Monteiro PF, Travanut A, Conte C, Alexander C. Reduction-responsive polymers for drug delivery in cancer therapy-Is there anything new to discover? WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2020; 13:e1678. [PMID: 33155421 DOI: 10.1002/wnan.1678] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/11/2020] [Accepted: 10/06/2020] [Indexed: 02/06/2023]
Abstract
Among various types of stimuli-responsive drug delivery systems, reduction-responsive polymers have attracted great interest. In general, these systems have high stability in systemic circulation, however, they can respond quickly to differences in the concentrations of reducing species in specific physiological sites associated with a pathology. This is a particularly relevant strategy to target diseases in which hypoxic regions are present, as polymers which are sensitive to in-situ expressed antioxidant species can, through a local response, release a therapeutic at high concentration in the targeted site, and thus, improve the selectivity and efficacy of the treatment. At the same time, such reduction-responsive materials can also decrease the toxicity and side effects of certain drugs. To date, polymers containing disulfide linkages are the most investigated of the class of reduction-responsive nanocarriers, however, other groups such as selenide and diselenide have also been used for the same purpose. In this review article, we discussed the rationale behind the development of reduction-responsive polymers as drug delivery systems and highlight examples of recent progress. We include the most popular design methods to generate reduction-responsive polymeric carriers and their applications in cancer therapy, and question what areas may still need to be explored in a field with already a very large number of research articles. Finally, we consider the main challenges associated with the clinical translation of these nanocarriers and the future perspectives in this area. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
| | | | - Claudia Conte
- Department of Pharmacy, University of Napoli Federico II, Napoli, Italy
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4
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Deng Z, Liu S. Controlled drug delivery with nanoassemblies of redox-responsive prodrug and polyprodrug amphiphiles. J Control Release 2020; 326:276-296. [DOI: 10.1016/j.jconrel.2020.07.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 01/20/2023]
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Abstract
Biocompatible and bio-based materials are an appealing resource for the pharmaceutical industry. Poly(glycerol-adipate) (PGA) is a biocompatible and biodegradable polymer that can be used to produce self-assembled nanoparticles (NPs) able to encapsulate active ingredients, with encouraging perspectives for drug delivery purposes. Starch is a versatile, inexpensive, and abundant polysaccharide that can be effectively applied as a bio-scaffold for other molecules in order to enrich it with new appealing properties. In this work, the combination of PGA NPs and starch films proved to be a suitable biopolymeric matrix carrier for the controlled release preparation of hydrophobic drugs. Dynamic Light Scattering (DLS) was used to determine the size of drug-loaded PGA NPs, while the improvement of the apparent drug water solubility was assessed by UV-vis spectroscopy. In vitro biological assays were performed against cancer cell lines and bacteria strains to confirm that drug-loaded PGA NPs maintained the effective activity of the therapeutic agents. Dye-conjugated PGA was then exploited to track the NP release profile during the starch/PGA nanocomposite film digestion, which was assessed using digestion models mimicking physiological conditions. The collected data provide a clear indication of the suitability of our biodegradable carrier system for oral drug delivery.
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Lian C, Cao S, Zeng W, Li Y, Su J, Li J, Zhao S, Wu L, Tao J, Zhou J, Chen X, Peng C. RJT-101, a novel camptothecin derivative, is highly effective in the treatment of melanoma through DNA damage by targeting topoisomerase 1. Biochem Pharmacol 2020; 171:113716. [DOI: 10.1016/j.bcp.2019.113716] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 11/13/2019] [Indexed: 12/24/2022]
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Levy A, Leynes C, Baig M, Chew SA. The Application of Biomaterials in the Treatment of Platinum‐Resistant Ovarian Cancer. ChemMedChem 2019; 14:1810-1827. [DOI: 10.1002/cmdc.201900450] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Arkene Levy
- Department of Pharmacology, College of Medical Sciences Nova Southeastern University 3200 South University Drive Davie FL 33328 USA
| | - Carolina Leynes
- Department Health and Biomedical Sciences University of Texas Rio Grande Valley One West University Boulevard Brownsville TX 78520 USA
| | - Mirza Baig
- Dr. Kiran C. Patel College of Osteopathic Medicine Nova Southeastern University 3200 South University Drive Davie FL 33328 USA
| | - Sue Anne Chew
- Department Health and Biomedical Sciences University of Texas Rio Grande Valley One West University Boulevard Brownsville TX 78520 USA
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8
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Immunological consequences of chemotherapy: Single drugs, combination therapies and nanoparticle-based treatments. J Control Release 2019; 305:130-154. [DOI: 10.1016/j.jconrel.2019.04.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/09/2019] [Accepted: 04/14/2019] [Indexed: 02/07/2023]
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Pusuluri A, Krishnan V, Wu D, Shields CW, Wang LW, Mitragotri S. Role of synergy and immunostimulation in design of chemotherapy combinations: An analysis of doxorubicin and camptothecin. Bioeng Transl Med 2019; 4:e10129. [PMID: 31249879 PMCID: PMC6584462 DOI: 10.1002/btm2.10129] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 03/09/2019] [Accepted: 03/26/2019] [Indexed: 01/03/2023] Open
Abstract
Combination chemotherapy is often employed to improve therapeutic efficacies of drugs. However, traditional combination regimens often utilize drugs at or near-their maximum tolerated doses (MTDs), elevating the risk of dose-related toxicity and impeding their clinical success. Further, high doses of adjuvant or neoadjuvant chemotherapies can cause myeloablation, which compromises the immune response and hinders the efficacy of chemotherapy as well as accompanying treatments such as immunotherapy. Clinical outcomes can be improved if chemotherapy combinations are designed to reduce the overall doses without compromising their therapeutic efficacy. To this end, we investigated a combination of camptothecin (CPT) with doxorubicin (DOX) as a low-dose treatment option for breast cancer. DOX-CPT combinations were synergistic in several breast cancer cell lines in vitro and one particular ratio displayed extremely high synergy on human triple negative breast cancer cells (MDA-MB-231). This combination led to excellent long-term survival of mice bearing MDA-MB-231 tumors at doses roughly five-fold lower than the reported MTD values of its constituent drugs. Impact of low dose DOX-CPT treatment on local tumor immune environment was assessed in immunocompetent mice bearing breast cancer (4T1) tumors. The combination was not only superior in inhibiting the disease progression compared to individual drugs, but it also generated a more favorable antitumor immunogenic response. Engineering DOX and CPT ratios to manifest synergy enables treatment at doses much lower than their MTDs, which could ultimately facilitate their translation into the clinic as a promising combination for breast cancer treatment.
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Affiliation(s)
- Anusha Pusuluri
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityCambridgeMA 02138
- Wyss Institute of Biologically Inspired Engineering, Harvard UniversityBostonMA 02115
- Department of Chemical EngineeringUniversity of CaliforniaSanta BarbaraCA 93106
| | - Vinu Krishnan
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityCambridgeMA 02138
- Wyss Institute of Biologically Inspired Engineering, Harvard UniversityBostonMA 02115
| | - Debra Wu
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityCambridgeMA 02138
- Wyss Institute of Biologically Inspired Engineering, Harvard UniversityBostonMA 02115
| | - C. Wyatt Shields
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityCambridgeMA 02138
- Wyss Institute of Biologically Inspired Engineering, Harvard UniversityBostonMA 02115
| | - Li W. Wang
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityCambridgeMA 02138
- Wyss Institute of Biologically Inspired Engineering, Harvard UniversityBostonMA 02115
- Harvard–MIT Health Sciences and Technology ProgramInstitute for Medical Engineering and Science, Massachusetts Institute of TechnologyCambridgeMA 02139
| | - Samir Mitragotri
- John A. Paulson School of Engineering and Applied Sciences, Harvard UniversityCambridgeMA 02138
- Wyss Institute of Biologically Inspired Engineering, Harvard UniversityBostonMA 02115
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Martínez-Martínez M, Rodríguez-Berna G, Bermejo M, Gonzalez-Alvarez I, Gonzalez-Alvarez M, Merino V. Covalently crosslinked organophosphorous derivatives-chitosan hydrogel as a drug delivery system for oral administration of camptothecin. Eur J Pharm Biopharm 2019; 136:174-183. [DOI: 10.1016/j.ejpb.2019.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/08/2019] [Accepted: 01/11/2019] [Indexed: 12/31/2022]
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11
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Luo SH, Wu YC, Cao L, Lin JY, Gao J, Chen SX, Wang ZY. Direct Metal-Free Preparation of Functionalizable Polylactic Acid-Ethisterone Conjugates in a One-Pot Approach. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201800475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Shi-He Luo
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou 510006 P. R. China
- PCFM Lab; School of Chemistry; Materials Science Institute; Sun Yat-Sen University; Guangzhou 510275 P. R. China
- School of Chemistry and Chemical Engineering; Key Laboratory of Functional Molecular Engineering of Guangdong Province; South China University of Technology; Guangzhou 510641 P. R. China
| | - Yan-Cheng Wu
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou 510006 P. R. China
- School of Materials Science and Engineering; South China University of Technology; Guangzhou 510641 P. R. China
| | - Liang Cao
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou 510006 P. R. China
- School of Chemistry and Chemical Engineering; Key Laboratory of Functional Molecular Engineering of Guangdong Province; South China University of Technology; Guangzhou 510641 P. R. China
| | - Jian-Yun Lin
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou 510006 P. R. China
| | - Jian Gao
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou 510006 P. R. China
| | - Shui-Xia Chen
- PCFM Lab; School of Chemistry; Materials Science Institute; Sun Yat-Sen University; Guangzhou 510275 P. R. China
| | - Zhao-Yang Wang
- School of Chemistry and Environment; South China Normal University; Key Laboratory of Theoretical Chemistry of Environment; Ministry of Education; Guangzhou 510006 P. R. China
- School of Chemistry and Chemical Engineering; Key Laboratory of Functional Molecular Engineering of Guangdong Province; South China University of Technology; Guangzhou 510641 P. R. China
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12
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A pH-responsive prodrug delivery system self-assembled from acid-labile doxorubicin-conjugated amphiphilic pH-sensitive block copolymers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 90:27-37. [DOI: 10.1016/j.msec.2018.04.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 01/30/2018] [Accepted: 04/15/2018] [Indexed: 12/20/2022]
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13
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Sasso L, Purdie L, Grabowska A, Jones AT, Alexander C. Time and cell-dependent effects of endocytosis inhibitors on the internalization of biomolecule markers and nanomaterials. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/jin2.39] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Luana Sasso
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
- School of Medicine; University of Nottingham; Nottingham NG7 2RD UK
| | - Laura Purdie
- School of Pharmacy; University of Nottingham; Nottingham NG7 2RD UK
- School of Medicine; University of Nottingham; Nottingham NG7 2RD UK
| | - Anna Grabowska
- School of Medicine; University of Nottingham; Nottingham NG7 2RD UK
| | - Arwyn Tomos Jones
- School of Pharmacy and Pharmaceutical Science; Cardiff University; Cardiff Wales CF10 3NB UK
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14
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Enhanced uptake in 2D- and 3D- lung cancer cell models of redox responsive PEGylated nanoparticles with sensitivity to reducing extra- and intracellular environments. J Control Release 2018. [PMID: 29534890 DOI: 10.1016/j.jconrel.2018.03.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In the treatment of lung cancer, there is an urgent need of innovative medicines to optimize pharmacological responses of conventional chemotherapeutics while attenuating side effects. Here, we have exploited some relatively unexplored subtle differences in reduction potential, associated with cancer cell microenvironments in addition to the well-known changes in intracellular redox environment. We report the synthesis and application of novel redox-responsive PLGA (poly(lactic-co-glycolic acid)) -PEG (polyethylene glycol) nanoparticles (RR-NPs) programmed to change surface properties when entering tumor microenvironments, thus enhancing cell internalization of the particles and their drug cargo. The new co-polymers, in which PEG and PLGA were linked by 'anchiomeric effector' dithiylethanoate esters, were synthesized by a combination of ring-opening polymerization and Michael addition reactions and employed to prepare NPs. Non redox-responsive nanoparticles (nRR-NPs) based on related PLGA-PEG copolymers were also prepared as comparators. Spherical NPs of around 120 nm diameter with a low polydispersity index and negative zeta potential as well as good drug loading of docetaxel were obtained. The NPs showed prolonged stability in relevant simulated biological fluids and a high ability to penetrate an artificial mucus layer due to the presence of the external PEG coating. Stability, FRET and drug release studies in conditions simulating intracellular reductive environments demonstrated a fast disassembly of the external shell of the NPs, thus triggering on-demand drug release. FACS measurements and confocal microscopy showed increased and faster uptake of RR-NPs in both 2D- and 3D- cell culture models of lung cancer compared to nRR-NPs. In particular, the 'designed-in' reductive instability of RR-NPs in conditioned cell media, the fast PEG release in the extracellular compartment, as well as a diminution of uptake rate in control experiments where extracellular thiols were neutralized, suggested a partial extracellular release of the PEG fringe that promoted rapid internalization of the residual NPs into cells. Taken together, these results provide further evidence of the effectiveness of PEGylated reducible nanocarriers to permeate mucus layer barriers, and establish a new means to enhance cancer cell uptake of drug carriers by extra-and intra-cellular cleavage of protein- and cell-shielding hydrophilic blocks.
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Effect of structural factors on release profiles of camptothecin from block copolymer conjugates with high load of drug. Int J Pharm 2018; 538:231-242. [PMID: 29341920 DOI: 10.1016/j.ijpharm.2018.01.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/09/2018] [Accepted: 01/12/2018] [Indexed: 11/21/2022]
Abstract
The aim of the present work was the synthesis and study the kinetics and profiles of camptothecin (CPT) release form block co- and ter-polymer conjugates comprising polylactide (PLA) segments and CPT moieties, structurally diverse by degrees of branching, content of d-PLA units and poly(ethylene glycol) methyl ether methacrylate (PEGMA). Six PLA, non-toxic macroinitiators (MIs), terminated with α-bromoester were synthesized. MIs were subjected to polymerization of CPT methacrylic derivative (CPTMA) with PEGMA at various ratios. The average contents of CPT from elemental analysis, NMR and UV-GPC were approximate to each other. The number of CPT molecules and PEGMA units was in the range of 9-195 and 0-280 per conjugate, respectively. PEGMA units plasticized PLA causing increase of its crystallinity, whereas 7% and more of d-PLA caused material amorphous. PEGMA units decreased thermal stability of conjugates, however it compatibillized the separated phases of PLA and PCPTMA, based on AFM. In vitro release rate of CPT from linear PLA conjugates deposited on injection-molded PLA bars increased by introduction of PEGMA units with zero-order kinetics and Korsmeyer-Peppas model indicating the super case II transport. Branched conjugates revealed some burst release and then the release was rather of first-order-kinetics with respect to CPT with non-Fickian transport.
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Blanco-Fernandez B, Concheiro A, Makwana H, Fernandez-Trillo F, Alexander C, Alvarez-Lorenzo C. Dually sensitive dextran-based micelles for methotrexate delivery. RSC Adv 2017. [DOI: 10.1039/c7ra00696a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Temperature and pH-sensitive micelles prepared from dextran grafted with poly(N-isopropylacrylamide) (PNIPAAm)/polyethylene glycol methyl ether (PEGMA) with/without 2-aminoethylmethacrylate (2-AEM) were evaluated as methotrexate delivery systems.
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Affiliation(s)
- B. Blanco-Fernandez
- Departamento de Farmacia y Tecnología Farmacéutica
- R+DPharma Group (GI-1645)
- Facultad de Farmacia
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
| | - A. Concheiro
- Departamento de Farmacia y Tecnología Farmacéutica
- R+DPharma Group (GI-1645)
- Facultad de Farmacia
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
| | - H. Makwana
- School of Pharmacy
- University of Nottingham
- University Park
- Nottingham NG7 2RD
- UK
| | - F. Fernandez-Trillo
- School of Pharmacy
- University of Nottingham
- University Park
- Nottingham NG7 2RD
- UK
| | - C. Alexander
- School of Pharmacy
- University of Nottingham
- University Park
- Nottingham NG7 2RD
- UK
| | - C. Alvarez-Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica
- R+DPharma Group (GI-1645)
- Facultad de Farmacia
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
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17
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Bao Y, Nicolas J. Structure–cytotoxicity relationship of drug-initiated polymer prodrug nanoparticles. Polym Chem 2017. [DOI: 10.1039/c7py00536a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cladribine (CdA)-based polymer prodrug nanoparticles were obtained by “drug-initiated” RAFT polymerization of squalenyl methacrylate (SqMA) from two different CdA-bearing chain transfer agents (CTAs) to evaluate the influence of the nature of the linkage between CdA and the CTA, and the bulkiness of the polymer, on the drug release and the biological performance.
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Affiliation(s)
- Yinyin Bao
- Institut Galien Paris-Sud
- CNRS UMR 8612
- Univ Paris-Sud
- Faculté de Pharmacie
- 92290 Châtenay-Malabry
| | - Julien Nicolas
- Institut Galien Paris-Sud
- CNRS UMR 8612
- Univ Paris-Sud
- Faculté de Pharmacie
- 92290 Châtenay-Malabry
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18
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Gulfam M, Matini T, Monteiro PF, Riva R, Collins H, Spriggs K, Howdle SM, Jérôme C, Alexander C. Bioreducible cross-linked core polymer micelles enhance in vitro activity of methotrexate in breast cancer cells. Biomater Sci 2017; 5:532-550. [DOI: 10.1039/c6bm00888g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PEG-poly(caprolactone) co-polymers with disulfide-linked cores are highly efficient for delivery of the anti-cancer drug methotrexate in vitro.
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Affiliation(s)
- Muhammad Gulfam
- School of Pharmacy
- University of Nottingham
- UK
- Center for Education and Research on Macromolecules (CERM)
- University of Liège
| | | | | | - Raphaël Riva
- Center for Education and Research on Macromolecules (CERM)
- University of Liège
- 4000 Liège
- Belgium
| | | | | | | | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM)
- University of Liège
- 4000 Liège
- Belgium
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19
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Smith AAA, Zuwala K, Pilgram O, Johansen KS, Tolstrup M, Dagnæs-Hansen F, Zelikin AN. Albumin-Polymer-Drug Conjugates: Long Circulating, High Payload Drug Delivery Vehicles. ACS Macro Lett 2016; 5:1089-1094. [PMID: 35658186 DOI: 10.1021/acsmacrolett.6b00544] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Albumin is an exquisite tool of nature used in biomedicine to achieve long blood residence time for drugs, but the payload it can carry is typically limited to one molecule per protein. In contrast, synthetic macromolecular prodrugs contain multiple copies of drugs per polymer chain but offer only a marginal increase in the circulation lifetime of the drugs. We combine the benefits of the two platforms and at the same time overcome their respective limitations. Specifically, we develop the synthesis of albumin-polymer-drug conjugates to obtain long circulating, high payload drug delivery vehicles. In vivo data validate that albumin endows the conjugate with a blood residence time similar to that of the protein and well exceeding that of the polymer. Therapeutic activity of the conjugates is validated using prodrugs of panobinostat, an HIV latency reversal agent, in which case the conjugates matched the drug in terms of efficacy of treatment.
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Affiliation(s)
| | - Kaja Zuwala
- Department of Infectious Diseases, Aarhus University Hospital, DK-8000 Aarhus C, Denmark
| | | | | | - Martin Tolstrup
- Department of Infectious Diseases, Aarhus University Hospital, DK-8000 Aarhus C, Denmark
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20
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Guo X, Wang L, Wei X, Zhou S. Polymer-based drug delivery systems for cancer treatment. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28252] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xing Guo
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education; School of Materials Science and Engineering, Southwest Jiaotong University; Chengdu 610031 China
| | - Lin Wang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education; School of Materials Science and Engineering, Southwest Jiaotong University; Chengdu 610031 China
| | - Xiao Wei
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education; School of Materials Science and Engineering, Southwest Jiaotong University; Chengdu 610031 China
| | - Shaobing Zhou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education; School of Materials Science and Engineering, Southwest Jiaotong University; Chengdu 610031 China
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21
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Ye M, Wang X, Tang J, Guo Z, Shen Y, Tian H, Zhu WH. Dual-channel NIR activatable theranostic prodrug for in vivo spatiotemporal tracking thiol-triggered chemotherapy. Chem Sci 2016; 7:4958-4965. [PMID: 30155145 PMCID: PMC6018301 DOI: 10.1039/c6sc00970k] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 04/27/2016] [Indexed: 12/22/2022] Open
Abstract
Real-time tracking for where (W), when (W), and how (H) prodrugs are delivered and activated in vivo is a great challenge for prodrug development. Disulfide linkage-based prodrugs as well as their delivery systems have been studied extensively, but the WWH question in spatial and temporal (spatiotemporal) precision remains unanswered. Herein, we present a novel prodrug of camptothecin (CPT) linked to a near-infrared (NIR) cyanine dye via a disulfide linkage (Cy-S-CPT). The cleavage of the disulfide bond in Cy-S-CPT by endogenous glutathione (GSH) can activate the anti-cancer drug CPT and induce a remarkable fluorescence shift from 825 to 650 nm, thereby providing dual fluorescent channels to real-time track the prodrug biodistribution and activation in vivo. Impressively, the dual-channel NIR fluorescence bioimaging exhibits the pervasive drug distribution, i.e., the biodistribution of the intact prodrug was traced at the 825 nm-NIR fluorescence channel, whereas the activated drug was tracked at the 650 nm red fluorescence channel. In this way, we can overcome the blind spot in the metabolism kinetics of prodrugs in a certain organ or tissue. As demonstrated, the prodrug prompts activation in all the organs, particularly in the liver after an intravenous injection, and achieves predominant accumulation and activation in tumors at 24 h post injection. Cy-S-CPT loaded in PEG-PLA nanoparticles display significantly improved therapeutic efficacy and low side effects with respect to the clinical used drug CPT-11. As a consequence, the NIR spatiotemporal bioimaging in vivo with dual fluorescence channels allows the prodrug release profile to be extracted precisely, particularly in visualizing drug-released information from complex biological systems such as mice, thereby providing a unique opportunity to take insight into the relationship between theranosis and pharmacokinetics.
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Affiliation(s)
- Mingzhou Ye
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Center for Bionanoengineering , College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , Zhejiang 310027 , P. R. China .
| | - Xiaohang Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , Shanghai Key Laboratory of Functional Materials Chemistry , School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China . ;
| | - Jianbin Tang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Center for Bionanoengineering , College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , Zhejiang 310027 , P. R. China .
| | - Zhiqian Guo
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , Shanghai Key Laboratory of Functional Materials Chemistry , School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China . ;
| | - Youqing Shen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Center for Bionanoengineering , College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , Zhejiang 310027 , P. R. China .
| | - He Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , Shanghai Key Laboratory of Functional Materials Chemistry , School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China . ;
| | - Wei-Hong Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , Shanghai Key Laboratory of Functional Materials Chemistry , School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China . ;
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22
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Schumann C, Chan S, Khalimonchuk O, Khal S, Moskal V, Shah V, Alani AWG, Taratula O, Taratula O. Mechanistic Nanotherapeutic Approach Based on siRNA-Mediated DJ-1 Protein Suppression for Platinum-Resistant Ovarian Cancer. Mol Pharm 2016; 13:2070-83. [PMID: 27170529 DOI: 10.1021/acs.molpharmaceut.6b00205] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report an efficient therapeutic modality for platinum resistant ovarian cancer based on siRNA-mediated suppression of a multifunctional DJ-1 protein that is responsible for the proliferation, growth, invasion, oxidative stress, and overall survival of various cancers. The developed therapeutic strategy can work alone or in concert with a low dose of the first line chemotherapeutic agent cisplatin, to elicit a maximal therapeutic response. To achieve an efficient DJ-1 knockdown, we constructed the polypropylenimine dendrimer-based nanoplatform targeted to LHRH receptors overexpressed on ovarian cancer cells. The quantitative PCR and Western immunoblotting analysis revealed that the delivered DJ-1 siRNA downregulated the expression of targeted mRNA and corresponding protein by more than 80% in various ovarian cancer cells. It was further demonstrated that siRNA-mediated DJ-1 suppression dramatically impaired proliferation, viability, and migration of the employed ovarian cancer cells. Finally, the combinatorial approach led to the most pronounced therapeutic response in all the studied cell lines, outperforming both siRNA-mediated DJ-1 knockdown and cisplatin treatment alone. It is noteworthy that the platinum-resistant cancer cells (A2780/CDDP) with the highest basal level of DJ-1 protein are most susceptible to the developed therapy and this susceptibility declines with decreasing basal levels of DJ-1. Finally, we interrogate the molecular underpinnings of the DJ-1 knockdown effects in the treatment of the ovarian cancer cells. By using various experimental techniques, it was revealed that DJ-1 depletion (1) decreases the activity of the Akt pathway, thereby reducing cellular proliferation and migration and increasing the antiproliferative effect of cisplatin on ovarian cancer cells; (2) enhances the activity of p53 tumor suppressor protein therefore restoring cell cycle arrest functionality and upregulating the Bax-caspase pathway, triggering cell death; and (3) weakens the cellular defense mechanisms against inherited oxidative stress thereby increasing toxic intracellular radicals and amplifying the reactive oxygen species created by the administration of cisplatin.
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Affiliation(s)
- Canan Schumann
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
| | - Stephanie Chan
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
| | - Oleh Khalimonchuk
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center , Omaha, Nebraska 68198, United States
| | - Shannon Khal
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
| | - Vitaliya Moskal
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
| | - Vidhi Shah
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
| | - Adam W G Alani
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
| | - Olena Taratula
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
| | - Oleh Taratula
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University , Portland, Oregon 97201, United States
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23
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Li J, Ke W, Wang L, Huang M, Yin W, Zhang P, Chen Q, Ge Z. Self-sufficing H2O2-responsive nanocarriers through tumor-specific H2O2 production for synergistic oxidation-chemotherapy. J Control Release 2016; 225:64-74. [DOI: 10.1016/j.jconrel.2016.01.029] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 01/10/2016] [Accepted: 01/18/2016] [Indexed: 10/22/2022]
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24
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Wang Y, Luo Q, Zhu W, Li X, Shen Z. Reduction/pH dual-responsive nano-prodrug micelles for controlled drug delivery. Polym Chem 2016. [DOI: 10.1039/c6py00168h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We provided a facile strategy to fabricate reduction/pH dual-responsive nano-prodrug micelles for controlled drug delivery.
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Affiliation(s)
- Ying Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Qiaojie Luo
- The First Affiliated Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310003
- P. R. China
| | - Weipu Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Xiaodong Li
- Department of Oral and Maxillofacial Surgery
- The Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Zhiquan Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
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25
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Pan G, Bao YJ, Xu J, Liu T, Liu C, Qiu YY, Shi XJ, Yu H, Jia TT, Yuan X, Yuan ZT, Yin PH, Cao YJ. Esterase-responsive polymeric prodrug-based tumor targeting nanoparticles for improved anti-tumor performance against colon cancer. RSC Adv 2016. [DOI: 10.1039/c6ra05236c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report on the fabrication of a multifunctional polymeric prodrug covalently linked with an anticancer drug (bufalin, BUF) and tumor-targeting peptide (RGD) and investigate its anticancer performance against colon cancer in mice.
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26
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Riber CF, Smith AAA, Zelikin AN. Self-Immolative Linkers Literally Bridge Disulfide Chemistry and the Realm of Thiol-Free Drugs. Adv Healthc Mater 2015; 4:1887-90. [PMID: 26109168 DOI: 10.1002/adhm.201500344] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Indexed: 11/09/2022]
Abstract
The ultimate goal of controlled, intracellulardrug delivery is to get the drug to the target cell without spilling the contents in transit and then release the entire payload upon cell entry. One of the most powerful platforms to achieve this relies on the intracellular disulfide reshuffling as a trigger for drug release form the engineered prodrugs. However, utility of disulfide reshuffling for drug release is naturally applicable only to the thiol containing molecules-ultimately leaving nearly all commercialized drugs beyond the scope of this platform. This is a drastic limitation. A cunning new tool of organic chemistry is fast entering the mainstream of prodrug design: the self-immolative linkers. This platform allows overcoming the natural chemical barrier and makes it possible to link virtually any drug to its carrier via a disulfide bond and engineer a specific intracellular release. It is a game-changing accomplishment of modern organic chemistry. The scope and limitations of this novel opportunity for medicinal chemistry and nanomedicine are outlined.
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Affiliation(s)
| | | | - Alexander N. Zelikin
- Department of Chemistry; Aarhus University; Aarhus 8000 Denmark
- iNano Interdisciplinary Nanoscience Centre; Aarhus University; Aarhus 8000 Denmark
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27
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Kock A, Zuwala K, Smith AAA, Ruiz-Sanchis P, Wohl BM, Tolstrup M, Zelikin AN. Disulfide reshuffling triggers the release of a thiol-free anti-HIV agent to make up fast-acting, potent macromolecular prodrugs. Chem Commun (Camb) 2015; 50:14498-500. [PMID: 25285337 DOI: 10.1039/c4cc04280h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The release of azidothymidine from macromolecular prodrugs was designed to respond to the intracellular disulfide reshuffling. This drug has no thiol groups, and a response to this trigger was engineered using a self-immolative linker. The resulting formulations were fast-acting, efficacious, and highly potent with regards to suppressing the infectivity of the virus.
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Affiliation(s)
- Anders Kock
- Department of Chemistry, Aarhus University, Aarhus, Denmark.
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28
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Xie C, Yang C, Zhang P, Zhang J, Wu W, Jiang X. Synthesis of drug-crosslinked polymer nanoparticles. Polym Chem 2015. [DOI: 10.1039/c4py01722f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new kind of drug-crosslinked polymer nanoparticle was synthesized. The nanoparticles were composed by a phenylboronic acid modified 10-hydroxycamptothecin (the crosslinker) and 1,2-diol-rich PEG-PGMA diblock copolymer (the backbone), and crosslinked by phenylboronic ester bond.
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Affiliation(s)
- Chen Xie
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- Jiangsu Key Laboratory for Nanotechnology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
| | - Chenchen Yang
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- Jiangsu Key Laboratory for Nanotechnology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
| | - Peng Zhang
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- Jiangsu Key Laboratory for Nanotechnology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
| | - Jialiang Zhang
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- Jiangsu Key Laboratory for Nanotechnology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
| | - Wei Wu
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- Jiangsu Key Laboratory for Nanotechnology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
| | - Xiqun Jiang
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- Jiangsu Key Laboratory for Nanotechnology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
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29
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Hu X, Liu S. Recent advances towards the fabrication and biomedical applications of responsive polymeric assemblies and nanoparticle hybrid superstructures. Dalton Trans 2015; 44:3904-22. [DOI: 10.1039/c4dt03609c] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We highlight recent developments, microstructural control, and biomedical applications of stimuli-responsive polymeric assemblies and responsive hybrid superstructures.
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Affiliation(s)
- Xianglong Hu
- Ministry of Education Key Laboratory of Laser Life Science and Institute of Laser Life Science
- College of Biophotonics
- South China Normal University
- Guangzhou 510631
- China
| | - Shiyong Liu
- 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
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30
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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] [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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