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Andrade-Gagnon B, Casillas-Popova SN, Jazani AM, Oh JK. Design, Synthesis, and Acid-Responsive Disassembly of Shell-Sheddable Block Copolymer Labeled with Benzaldehyde Acetal Junction. Macromol Rapid Commun 2024:e2400097. [PMID: 38499007 DOI: 10.1002/marc.202400097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/13/2024] [Indexed: 03/20/2024]
Abstract
Smart nanoassemblies degradable through the cleavage of acid-labile linkages have attracted significant attention because of their biological relevance found in tumor tissues. Despite their high potential to achieve controlled/enhanced drug release, a systematic understanding of structural factors that affect their pH sensitivity remains challenging, particulary in the consruction of effective acid-degradable shell-sheddable nanoassemblies. Herein, the authors report the synthesis and acid-responsive degradation through acid-catalyzed hydrolysis of three acetal and ketal diols and identify benzaldehyde acetal (BzAA) exhibiting optimal hydrolysis profiles in targeted pH ranges to be a suitable candidate for junction acid-labile linkage. The authors explore the synthesis and aqueous micellization of well-defined poly(ethylene glycol)-based block copolymer bearing BzAA linkage covalently attached to a polymethacrylate block for the formation of colloidally-stable nanoassemblies with BzAA groups at core/corona interfaces. Promisingly, the investigation on acid-catalyzed hydrolysis and disassembly shows that the formed nanoassemblies meet the criteria for acid-degradable shell-sheddable nanoassemblies: slow degradation at tumoral pH = 6.5 and rapid disassembly at endo/lysosomal pH = 5.0, while colloidal stability at physiological pH = 7.4. This work guides the design principle of acid-degradable shell-sheddable nanoassemblies bearing BzAA at interfaces, thus offering the promise to address the PEG dilemma and improve endocytosis in tumor-targeting drug delivery.
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Affiliation(s)
- Brandon Andrade-Gagnon
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada
| | | | - Arman Moini Jazani
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA, 15213, USA
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, H4B 1R6, Canada
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Hung SF, Wen YH, Yu LY, Chiu HC, Chiang YT, Lo CL. Development of a Rapid-Onset, Acid-Labile Linkage Polyplex-Mixed Micellar System for Anticancer Therapy. Polymers (Basel) 2021; 13:polym13111823. [PMID: 34072925 PMCID: PMC8198952 DOI: 10.3390/polym13111823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/26/2021] [Accepted: 05/29/2021] [Indexed: 12/01/2022] Open
Abstract
In the treatment of cancers, small interfering ribonucleic acids (siRNAs) are delivered into cells to inhibit the oncogenic protein’s expression; however, polyanions, hydrophilicity, and rapid degradations in blood, endosomal or secondary lysosomal degradation hamper clinal applications. In this study, we first synthesized and characterized two copolymers: methoxy poly(ethylene glycol)-b-poly(2-hydroxy methacrylate-ketal-pyridoxal) and methoxy poly(ethylene glycol)-b-poly(methacrylic acid-co-histidine). Afterwards, we assembled two polymers with the focal adhesion kinase (FAK) siRNA, forming polyplex-mixed micelles for the treatment of the human colon cancer cell line HCT116. In terms of the physiological condition, the cationic pyridoxal molecules that were conjugated on the copolymer with ketal bonds could electrostatically attract the siRNA. Additionally, the pyridoxal could form a hydrophobic core together with the hydrophobic deprotonated histidine molecules in the other copolymer and the hydrophilic polyethylene glycol (PEG) shell to protect the siRNA. In an acidic condition, the pyridoxal would be cleaved from the polymers due to the breakage of the ketal bonds and the histidine molecules can simultaneously be protonated, resulting in the endosome/lysosome escape effect. On the basis of our results, the two copolymers were successfully prepared and the pyridoxal derivatives were identified to be able to carry the siRNA and be cleavable by the copolymers in an acidic solution. Polyplex-mixed micelles were prepared, and the micellar structures were identified. The endosome escape behavior was observed using a confocal laser scanning microscopy (CLSM). The FAK expression was therefore reduced, and the cytotoxicity of siRNA toward human colon cancer cells was exhibited, rapidly in 24 h. This exceptional anticancer efficiency suggests the potential of the pH-sensitive polyplex-mixed micellar system in siRNA delivery.
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Affiliation(s)
- Shiou-Fen Hung
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Linong St., Beitou Dist., Taipei City 112, Taiwan; (S.-F.H.); (Y.-H.W.); (L.-Y.Y.)
| | - Yu-Han Wen
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Linong St., Beitou Dist., Taipei City 112, Taiwan; (S.-F.H.); (Y.-H.W.); (L.-Y.Y.)
| | - Lu-Yi Yu
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Linong St., Beitou Dist., Taipei City 112, Taiwan; (S.-F.H.); (Y.-H.W.); (L.-Y.Y.)
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu 300044, Taiwan;
| | - Yi-Ting Chiang
- School of Pharmacy, China Medical University, No. 100, Sec. 1, Jingmao Rd., Beitun Dist., Taichung City 406040, Taiwan
- Correspondence: (Y.-T.C.); (C.-L.L.); Tel.: +886-4-2205-3366 (ext. 5611) (Y.-T.C.); +886-2-2826-7914 (C.-L.L.)
| | - Chun-Liang Lo
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Linong St., Beitou Dist., Taipei City 112, Taiwan; (S.-F.H.); (Y.-H.W.); (L.-Y.Y.)
- Correspondence: (Y.-T.C.); (C.-L.L.); Tel.: +886-4-2205-3366 (ext. 5611) (Y.-T.C.); +886-2-2826-7914 (C.-L.L.)
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Jazani AM, Shetty C, Movasat H, Bawa KK, Oh JK. Imidazole-Mediated Dual Location Disassembly of Acid-Degradable Intracellular Drug Delivery Block Copolymer Nanoassemblies. Macromol Rapid Commun 2021; 42:e2100262. [PMID: 34050688 DOI: 10.1002/marc.202100262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/14/2021] [Indexed: 11/10/2022]
Abstract
Acid-degradable (or acid-cleavable) polymeric nanoassemblies have witnessed significant progress in anti-cancer drug delivery. However, conventional nanoassemblies designed with acid-cleavable linkages at a single location have several challenges, such as, sluggish degradation, undesired aggregation of degraded products, and difficulty in controlled and on-demand drug release. Herein, a strategy that enables the synthesis of acid-cleavable nanoassemblies labeled with acetaldehyde acetal groups in both hydrophobic cores and at core/corona interfaces, exhibiting synergistic response to acidic pH at dual locations and thus inducing rapid drug release is reported. The systematic analyses suggest that the acid-catalyzed degradation and disassembly are further enhanced by decreasing copolymer concentration (i.e., increasing proton/acetal mole ratio). Moreover, incorporation of acid-ionizable imidazole pendants in the hydrophobic cores improve the encapsulation of doxorubicin, the anticancer drug, through π-π interactions and enhance the acid-catalyzed hydrolysis of acetal linkages situated in the dual locations. Furthermore, the presence of the imidazole pendants induce the occurrence of core-crosslinking that compensates the kinetics of acetal hydrolysis and drug release. These results, combined with in vitro cell toxicity and cellular uptake, suggest the versatility of the dual location acid-degradation strategy in the design and development of effective intracellular drug delivery nanocarriers.
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Affiliation(s)
- Arman Moini Jazani
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Chaitra Shetty
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Hourieh Movasat
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Kamaljeet Kaur Bawa
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada
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Shetty C, Noronha A, Pontarelli A, Wilds CJ, Oh JK. Dual-Location Dual-Acid/Glutathione-Degradable Cationic Micelleplexes through Hydrophobic Modification for Enhanced Gene Silencing. Mol Pharm 2020; 17:3979-3989. [DOI: 10.1021/acs.molpharmaceut.0c00767] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chaitra Shetty
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada H4B 1R6
| | - Anne Noronha
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada H4B 1R6
| | - Alexander Pontarelli
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada H4B 1R6
| | - Christopher J. Wilds
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada H4B 1R6
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry, Concordia University, Montréal, Québec, Canada H4B 1R6
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Zhang X, Dai Y, Dai G, Deng C. Advances in PEG-based ABC terpolymers and their applications. RSC Adv 2020; 10:21602-21614. [PMID: 35518773 PMCID: PMC9054495 DOI: 10.1039/d0ra03478a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 05/18/2020] [Indexed: 12/16/2022] Open
Abstract
ABC terpolymers are a class of very important polymers because of their expansive molecular topologies and extensive architectures. As block A, poly(ethylene glycol) (PEG) is one of the most principal categories owing to good biocompatibility and wide commercial availability. More importantly, the synthetic approaches of ABC terpolymers using PEG as a macroinitiator are facile and varied. PEG-based ABC terpolymers from design and synthesis to applications are highlighted in this review. Linear, 3-miktoarm, and cyclic polymers as the architecture are separated. The synthetic approaches of PEG-based ABC terpolymers mainly include the sequential polymerization or coupling of polymers. PEG-based ABC terpolymers have wide applications in the fields of drug carriers, gene vectors, templates for the fabrication of inorganic hollow nanospheres, and stabilizers of metal nanoparticles.
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Affiliation(s)
- Xiaojin Zhang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
| | - Yu Dai
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 China
| | - Guofei Dai
- Jiangxi Provincial Key Laboratory of Water Resources and Environment of Poyang Lake, Jiangxi Institute of Water Sciences Nanchang 330029 China
| | - Chunhui Deng
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis, Advanced Materials Laboratory, Fudan University Shanghai 200433 China
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Jazani AM, Oh JK. Development and disassembly of single and multiple acid-cleavable block copolymer nanoassemblies for drug delivery. Polym Chem 2020. [DOI: 10.1039/d0py00234h] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Acid-degradable block copolymer-based nanoassemblies are promising intracellular candidates for tumor-targeting drug delivery as they exhibit the enhanced release of encapsulated drugs through their dissociation.
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Affiliation(s)
- Arman Moini Jazani
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada H4B 1R6
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada H4B 1R6
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Jazani AM, Arezi N, Shetty C, Hong SH, Li H, Wang X, Oh JK. Tumor-targeting intracellular drug delivery based on dual acid/reduction-degradable nanoassemblies with ketal interface and disulfide core locations. Polym Chem 2019. [DOI: 10.1039/c9py00352e] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dual acid/reduction-degradable block copolymer nanoassemblies both at core/corona interfaces and in micellar cores leading to synergistic and accelerated drug release for robust tumor-targeting intracellular drug delivery.
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Affiliation(s)
- Arman Moini Jazani
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada H4B 1R6
| | - Newsha Arezi
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada H4B 1R6
| | - Chaitra Shetty
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada H4B 1R6
| | - Sung Hwa Hong
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada H4B 1R6
| | - Haowen Li
- Institute of Medicinal Plant Development (IMPLAD)
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- China
| | - Xiangtao Wang
- Institute of Medicinal Plant Development (IMPLAD)
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Beijing 100193
- China
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry
- Concordia University
- Montreal
- Canada H4B 1R6
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Efficient synthesis of cRGD functionalized polymers as building blocks of targeted drug delivery systems. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.04.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Sevimli S, Sagnella S, Macmillan A, Whan R, Kavallaris M, Bulmus V, Davis TP. The endocytic pathway and therapeutic efficiency of doxorubicin conjugated cholesterol-derived polymers. Biomater Sci 2015. [DOI: 10.1039/c4bm00224e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Previously synthesized poly(methacrylic acid-co-cholesteryl methacrylate) P(MAA-co-CMA) copolymers were examined as potential drug delivery vehicles.
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Affiliation(s)
- Sema Sevimli
- The Centre for Advanced Macromolecular Design (CAMD)
- The University of New South Wales
- Sydney
- Australia
- Australian Centre for Nanomedicine (ACN)
| | - Sharon Sagnella
- Australian Centre for Nanomedicine (ACN)
- The University of New South Wales
- Sydney
- Australia
- Children's Cancer Institute Australia (CCIA)
| | - Alexander Macmillan
- Children's Cancer Institute Australia (CCIA)
- Lowy Cancer Research Centre
- The University of New South Wales
- Sydney
- Australia
| | - Renee Whan
- Children's Cancer Institute Australia (CCIA)
- Lowy Cancer Research Centre
- The University of New South Wales
- Sydney
- Australia
| | - Maria Kavallaris
- Australian Centre for Nanomedicine (ACN)
- The University of New South Wales
- Sydney
- Australia
- Children's Cancer Institute Australia (CCIA)
| | - Volga Bulmus
- Department of Chemical Engineering
- Biotechnology and Bioengineering Graduate Program
- Izmir Institute of Technology
- Urla
- Turkey
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
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Louage B, Zhang Q, Vanparijs N, Voorhaar L, Vande Casteele S, Shi Y, Hennink WE, Van Bocxlaer J, Hoogenboom R, De Geest BG. Degradable ketal-based block copolymer nanoparticles for anticancer drug delivery: a systematic evaluation. Biomacromolecules 2014; 16:336-50. [PMID: 25490543 DOI: 10.1021/bm5015409] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Low solubility of potent (anticancer) drugs is a major driving force for the development of noncytotoxic, stimuli-responsive nanocarriers, including systems based on amphiphilic block copolymers. In this regard, we investigated the potential of block copolymers based on 2-hydroxyethyl acrylate (HEA) and the acid-sensitive ketal-containing monomer (2,2-dimethyl-1,3-dioxolane-4-yl)methyl acrylate (DMDMA) to form responsive drug nanocarriers. Block copolymers were successfully synthesized by sequential reversible addition-fragmentation chain transfer (RAFT) polymerization, in which we combined a hydrophilic poly(HEA)x block with a (responsive) hydrophobic poly(HEAm-co-DMDMAn)y copolymer block. The DMDMA content of the hydrophobic block was systematically varied to investigate the influence of polymer design on physicochemical properties and in vitro biological performance. We found that a DMDMA content higher than 11 mol % is required for self-assembly behavior in aqueous medium. All particles showed colloidal stability in PBS at 37 °C for at least 4 days, with sizes ranging from 23 to 338 nm, proportional to the block copolymer DMDMA content. Under acidic conditions, the nanoparticles decomposed into soluble unimers, of which the decomposition rate was inversely proportional to the block copolymer DMDMA content. Flow cytometry and confocal microscopy showed dose-dependent, active in vitro cellular uptake of the particles loaded with hydrophobic octadecyl rhodamine B chloride (R18). The block copolymers showed no intrinsic in vitro cytotoxicity, while loaded with paclitaxel (PTX), a significant decrease in cell viability was observed comparable or better than the two commercial PTX nanoformulations Abraxane and Genexol-PM at equal PTX dose. This systematic approach evaluated and showed the potential of these block copolymers as nanocarriers for hydrophobic drugs.
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Affiliation(s)
- Benoit Louage
- Department of Pharmaceutics, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
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Synthesis of a PEG-PNIPAm thermosensitive dendritic copolymer and investigation of its self-association. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-015-1561-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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