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Ota T, Montagna V, Higuchi Y, Kato T, Tanaka M, Sardon H, Fukushima K. Organocatalyzed ring-opening reactions of γ-carbonyl-substituted ε-caprolactones. RSC Adv 2023; 13:27764-27771. [PMID: 37731833 PMCID: PMC10507672 DOI: 10.1039/d3ra01025b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023] Open
Abstract
Side-chain-functionalized aliphatic polyesters are promising as functional biodegradable polymers. We have investigated ring-opening reactions of γ-carbonyl-substituted ε-caprolactones (gCCLs) to obtain poly(ε-caprolactone) (PCL) analogues. Organic catalysts and Sn(Oct)2 often used for the ring-opening polymerization (ROP) of ε-caprolactone (CL) have been explored to find the conditions for the formation of polymeric products of gCCLs. We confirmed the consumption of gCCLs in all catalyzed reactions. However, chain propagation hardly occurs, as the propagating species are preferentially transformed to α-substituted five-membered lactones when the substituents are linked by ester or not sterically hindered. Intramolecular cyclization to form thermodynamically stable five-membered lactones releases alcohols and amines, serving as nucleophiles for the subsequent ring opening of other gCCLs. Thus, apparent chain reactions are realized for continuous consumption of gCCLs. The reaction preference remains unchanged independent of the catalysts, although the reactions of the amide-linked gCCLs by acidic catalysts are slightly mitigated. Finally, copolymerization of CL and a gCCL catalyzed by diphenyl phosphate has been investigated, which enables the chain propagation reaction to yield the linear oligomers of PCL analogues containing up to 16 mol% of gCCL units. This study contributes to understanding the chemistry of ring-opening reactions of substituted lactones for designing functional degradable polymers.
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Affiliation(s)
- Takayuki Ota
- Graduate School of Science and Engineering, Yamagata University Yamagata 992-8510 Japan
| | - Valentina Montagna
- Graduate School of Organic Materials Science, Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center Avda. Tolosa 72 20018 Donostia-San Sebastian Spain
| | - Yuji Higuchi
- Research Institute for Information Technology, Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Haritz Sardon
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center Avda. Tolosa 72 20018 Donostia-San Sebastian Spain
| | - Kazuki Fukushima
- Graduate School of Organic Materials Science, Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
- Japan Science and Technology Agency (JST), PRESTO 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
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Chanthaset N, Maehara A, Ajiro H. Particles and film preparation of ester-free type poly(trimethylene carbonate) derivatives bearing aromatic groups initiated with hydrophilic initiators. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Marimuthu A, Logesh M, El Mabrouk K, Ballamurugan AM. In vitro hemocompatibility studies on small-caliber stents for cardiovascular applications. RSC Adv 2023; 13:6793-6799. [PMID: 36860538 PMCID: PMC9969537 DOI: 10.1039/d2ra06831a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 02/08/2023] [Indexed: 03/02/2023] Open
Abstract
The doping of biologically meaningful ions into biphasic calcium phosphate (BCP) bioceramics, which exhibit biocompatibility with human body parts, has led to their effective use in biomedical applications in recent years. Doping with metal ions while changing the characteristics of the dopant ions, an arrangement of various ions in the Ca/P crystal structure. In our work, small-diameter vascular stents based on BCP and biologically appropriate ion substitute-BCP bioceramic materials were developed for cardiovascular applications. The small-diameter vascular stents were created using an extrusion process. FTIR, XRD, and FESEM were used to identify the functional groups, crystallinity, and morphology of the synthesized bioceramic materials. In addition, investigation of the blood compatibility of the 3D porous vascular stents was carried out via hemolysis. The outcomes indicate that the prepared grafts are appropriate for clinical requirements.
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Affiliation(s)
- Arumugam Marimuthu
- Department of Nanoscience and Technology, Bharathiar University Coimbatore-641046 India
| | - Mahendran Logesh
- Department of Nanoscience and Technology, Bharathiar University Coimbatore-641046 India
| | - Khalil El Mabrouk
- Euromed Engineering Faculty, Euromed Research Center, Euromed University of Fes, Eco-Campus, Campus UEMFFesMorocco
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Watanabe Y, Kato R, Fukushima K, Kato T. Degradable and Nanosegregated Elastomers with Multiblock Sequences of Biobased Aromatic Mesogens and Biofunctional Aliphatic Oligocarbonates. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Yuya Watanabe
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Riki Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazuki Fukushima
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST), PRESTO, Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Research Initiative for Supra-Materials, Shinshu University, Wakasato, Nagano 380-8553, Japan
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Fukushima K, Ota Y, Kato T. Polydioxanone Derivative Bearing Methoxy Groups towards Bio‐Functional Degradable Polymers Exhibiting Hydration‐Driven Biocompatibility. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200192] [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)
- Kazuki Fukushima
- Department of Chemistry and Biotechnology, School of Engineering The University of Tokyo Hongo, Bunkyo‐ku Tokyo 113‐8656 Japan
- Japan Science and Technology Agency (JST), PRESTO Honcho, Kawaguchi Saitama 332‐0012 Japan
| | - Yuki Ota
- Department of Chemistry and Biotechnology, School of Engineering The University of Tokyo Hongo, Bunkyo‐ku Tokyo 113‐8656 Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering The University of Tokyo Hongo, Bunkyo‐ku Tokyo 113‐8656 Japan
- Research Initiative for Supra‐Materials Shinshu University Wakasato Nagano 380‐8553 Japan
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Yan Z, Wu S, Zhou Y, Li F. Acid-Responsive Micelles Releasing Cinnamaldehyde Enhance RSL3-Induced Ferroptosis in Tumor Cells. ACS Biomater Sci Eng 2022; 8:2508-2517. [PMID: 35648631 DOI: 10.1021/acsbiomaterials.2c00236] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ferroptosis is a novel type of regulated cell death characterized by the accumulation of lipid peroxides to lethal levels. Most tumor cells are extremely vulnerable to ferroptosis due to the high levels of reactive oxygen species (ROS) produced by their active metabolism. Therefore, tumor cells rely on glutathione (GSH) to reduce lipid peroxides catalyzed by glutathione peroxidase 4 (GPX4), and this pathway is also an important target for a variety of drugs that promote tumor cell ferroptosis. Herein, RSL3@PCA was designed to simultaneously deplete intracellular GSH and inhibit the activity of GPX4, thereby significantly promoting tumor cell ferroptosis. RSL3@PCA was successfully prepared by encapsulating a selective inhibitor of GPX4 into acid-responsive nanoparticle PCA. After being taken up by tumor cells, the acid-responsive nanoparticle gradually degraded to release cinnamaldehyde (CA) and the encapsulated RSL3. CA and RSL3 block the reduction of lipid peroxides in cells, thereby inducing ferroptosis. By a cytotoxicity assay and 4T1 cell xenotransplantation model, we confirmed that RSL3@PCA has excellent inhibition of tumor growth without significant toxicity to normal cells and tissues and still has a good therapeutic effect on tumor cells that are resistant to conventional chemotherapy drugs. This work provides new drug combinations for promoting ferroptosis in tumor cells without severe side effects in normal organs.
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Affiliation(s)
- Ziliang Yan
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P. R. China
| | - Shaojie Wu
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P. R. China
| | - Yue Zhou
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P. R. China
| | - Feng Li
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P. R. China
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Miyake R, Maehara A, Chanthaset N, Ajiro H. Thermal Property Control by Copolymerization of Trimethylene Carbonate and Its Derivative Bearing Triphenylmethyl Group. ChemistrySelect 2022. [DOI: 10.1002/slct.202104326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rikyu Miyake
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology, 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
| | - Akari Maehara
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology, 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
| | - Nalinthip Chanthaset
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology, 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
| | - Hiroharu Ajiro
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology, 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
- Data Science Center Nara Institute of Science and Technology, 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
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Watanabe Y, Takaoka S, Haga Y, Kishi K, Hakozaki S, Narumi A, Kato T, Tanaka M, Fukushima K. Organic carboxylate salt-enabled alternative synthetic routes for bio-functional cyclic carbonates and aliphatic polycarbonates. Polym Chem 2022. [DOI: 10.1039/d2py00705c] [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
A cyclic carbonate with an ammonium carboxylate residue was found to serve as a nucleophile for esterification with alkyl bromides via the SN2 mechanism.
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Affiliation(s)
- Yuya Watanabe
- Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shunya Takaoka
- Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yuta Haga
- Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Kohei Kishi
- Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shunta Hakozaki
- Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Atsushi Narumi
- Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazuki Fukushima
- Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Synthesis of ester-free type poly(trimethylene carbonate) derivatives bearing cycloalkyl side groups. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Thermal, mechanical and degradation properties of flexible poly (1,3-trimethylene carbonate)/poly (L-lactide-co-ε-caprolactone) blends. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02802-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Amsden B. In Vivo Degradation Mechanisms of Aliphatic Polycarbonates and Functionalized Aliphatic Polycarbonates. Macromol Biosci 2021; 21:e2100085. [PMID: 33893715 DOI: 10.1002/mabi.202100085] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/29/2021] [Indexed: 11/06/2022]
Abstract
Aliphatic polycarbonates (APCs) have been studied for decades but have not been as utilized as aliphatic polyesters in biomaterial applications such as drug delivery and tissue engineering. With the recognition that functionalized aliphatic polymers can be readily synthesized, increased attention is being paid to these materials. A frequently provided reason for utilizing these polymers is that they degrade to form diols and carbon dioxide. However, depending on the structure and molecular weight of the APC, degradation may not occur. In this review, the mechanisms by which APCs and functionalized APCs have been found to degrade in vivo are examined with the objective of providing guidance in the continued development of these polymers as biomaterials.
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Affiliation(s)
- Brian Amsden
- Department of Chemical Engineering, Queen's University, Kingston, K7L 3N6, Canada
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