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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; 45:e2400097. [PMID: 38499007 DOI: 10.1002/marc.202400097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [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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Kanazawa T, Nishikawa T, Ouchi M. Orthogonal C-B Bond Transformation as an Approach for Versatile Synthesis of End-Functionalized Polymers. ACS Macro Lett 2022; 11:706-710. [PMID: 35570803 DOI: 10.1021/acsmacrolett.2c00207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Conventionally inaccessible end-functionalized vinyl polymers were synthesized via orthogonal side-chain replacement for terminal and repeating units of poly(alkenyl boronate)s. A terminal-defined polymer of isopropenyl boronic acid pinacol ester (IPBpin) was synthesized via RAFT polymerization, and subsequent cobalt (Co)-catalyzed end olefination afforded the polymer carrying the C(sp2)-B bond at the terminal and the C(sp3)-B bond in repeating units. Herein, the terminal C(sp2)-B bond was selectively transformable via palladium (Pd)-catalyzed Suzuki-Miyaura cross coupling, and subsequent transformation of the repeating C(sp3)-B unit gave the poly(α-methyl vinyl alcohol) [poly(MVA)] bearing various functional groups at the terminal. The boron-based stepwise polymer reaction thus overcame the synthetic difficulty of the end-functionalized poly(MVA), which is ascribed to the poor polymerization ability of the corresponding acetate monomer, i.e., isopropenyl acetate.
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Affiliation(s)
- Tomoaki Kanazawa
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Tsuyoshi Nishikawa
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Makoto Ouchi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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Dirauf M, Muljajew I, Weber C, Schubert US. Recent advances in degradable synthetic polymers for biomedical applications – Beyond polyesters. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101547] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Moreno A, Morsali M, Sipponen MH. Catalyst-Free Synthesis of Lignin Vitrimers with Tunable Mechanical Properties: Circular Polymers and Recoverable Adhesives. ACS APPLIED MATERIALS & INTERFACES 2021; 13:57952-57961. [PMID: 34813290 PMCID: PMC8662642 DOI: 10.1021/acsami.1c17412] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/15/2021] [Indexed: 06/04/2023]
Abstract
Biobased circular materials are alternatives to fossil-based engineering plastics, but simple and material-efficient synthetic routes are needed for industrial scalability. Here, a series of lignin-based vitrimers built on dynamic acetal covalent networks with a gel content exceeding 95% were successfully prepared in a one-pot, thermally activated, and catalyst-free "click" addition of softwood kraft lignin (SKL) to poly(ethylene glycol) divinyl ether (PDV). The variation of the content of lignin from 28 to 50 wt % was used to demonstrate that the mechanical properties of the vitrimers can be widely tuned in a facile way. The lowest lignin content (28 wt %) showed a tensile strength of 3.3 MPa with 35% elongation at break, while the corresponding values were 50.9 MPa and 1.0% for the vitrimer containing 50 wt % of lignin. These lignin-based vitrimers also exhibited excellent performance as recoverable adhesives for different substrates such as aluminum and wood, with a lap shear test strength of 6.0 and 2.6 MPa, respectively. In addition, recyclability of the vitrimer adhesives showed preservation of the adhesion performance exceeding 90%, indicating a promising potential for their use in sustainable circular materials.
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Affiliation(s)
| | | | - Mika H. Sipponen
- Department of Materials and Environmental
Chemistry, Stockholm University, Svante Arrhenius Väg 16C, SE-106 91 Stockholm, Sweden
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Fuoco T. Degradation in Order: Simple and Versatile One‐Pot Combination of Two Macromolecular Concepts to Encode Diverse and Spatially Regulated Degradability Functions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tiziana Fuoco
- Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry, Biotechnology and Health KTH Royal Institute of Technology Teknikringen, 56–58 100-44 Stockholm Sweden
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Fuoco T. Degradation in Order: Simple and Versatile One-Pot Combination of Two Macromolecular Concepts to Encode Diverse and Spatially Regulated Degradability Functions. Angew Chem Int Ed Engl 2021; 60:15482-15489. [PMID: 33951273 PMCID: PMC8361945 DOI: 10.1002/anie.202103143] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 01/20/2023]
Abstract
The clever one-pot combination of two macromolecular concepts, ring-opening polymerization (ROP) and step-growth polymerization (SGP), is demonstrated to be a simple, yet powerful tool to design a library of sequence-controlled polymers with diverse and spatially regulated degradability functions. ROP and SGP occur sequentially at room temperature when the organocatalytic conditions are switched from basic to acidic, and each allows the encoding of specific degradable bonds. ROP controls the sequence length and position of the degradability functions, while SGP between the complementary vinyl ether and hydroxyl chain-ends enables the formation of acetal bonds and high-molar-mass copolymers. The result is the rational combination of cleavable bonds prone to either bulk or surface erosion within the same macromolecule. The strategy is versatile and offers higher chemical diversity and level of control over the primary structure than current aliphatic polyesters or polycarbonates, while being simple, effective, and atom-economical and having potential for scalability.
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Affiliation(s)
- Tiziana Fuoco
- Department of Fibre and Polymer TechnologySchool of Engineering Sciences in Chemistry, Biotechnology and HealthKTH Royal Institute of TechnologyTeknikringen, 56–58100-44StockholmSweden
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Hewitt DRO, Grubbs RB. Amine-Catalyzed Chain Polymerization of Ethyl Glyoxylate from Alcohol and Thiol Initiators. ACS Macro Lett 2021; 10:370-374. [PMID: 35549067 DOI: 10.1021/acsmacrolett.0c00865] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Polyacetals have significant potential as degradable polymers, but aldehyde polymerizations are generally difficult to control. Here we show that polymerization of ethyl glyoxylate can be initiated from alcohols or thiols by activation with triethylamine to afford poly(ethyl glyoxylate) with controllable molecular weights and relatively low dispersities (Đ = 1.3-1.4), as evidenced by MALDI-TOF mass spectrometry. Stabilization against depolymerization by chain-capping with benzyl chloroformate was found to proceed without side reactions observed from chain-capping with tolyl isocyanate. The use of the stronger base DBU leads to competing side reactions that limit polymer molecular weight.
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Affiliation(s)
- David R. O. Hewitt
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Robert B. Grubbs
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
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Shen M, Vijjamarri S, Cao H, Solis K, Robertson ML. Degradability, thermal stability, and high thermal properties in spiro polycycloacetals partially derived from lignin. Polym Chem 2021. [DOI: 10.1039/d1py01017d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spiro polycycloacetals were synthesized from vanillin and syringaldehyde, along with high-performance co-monomers, exhibiting high glass transition temperatures and thermal stabilities, and rapid rates of hydrolysis in acidic solutions.
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Affiliation(s)
- Minjie Shen
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, 77204, USA
| | - Srikanth Vijjamarri
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, 77204, USA
| | - Hongda Cao
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, 77204, USA
| | - Karla Solis
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, 77204, USA
| | - Megan L. Robertson
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, 77204, USA
- Department of Chemistry, University of Houston, Houston, TX 77204, USA
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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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