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Lei X, Yang B, Chen J, Yang F, Tang J, Li J, Zhao Q, Zhang J, Li J, Li Y, Zuo Y. Biodegradable Polyurethane Scaffolds in Regeneration Therapy: Characterization and In Vivo Real-Time Degradation Monitoring by Grafted Fluorescent Tracer. ACS APPLIED MATERIALS & INTERFACES 2024; 16:111-126. [PMID: 38112686 DOI: 10.1021/acsami.3c13187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
There is an urgent need to assess material degradation in situ and in real time for their promising application in regeneration therapy. However, traditional monitoring methods in vitro cannot always profile the complicated behavior in vivo. This study designed and synthesized a new biodegradable polyurethane (PU-P) scaffold with polycaprolactone glycol, isophorone diisocyanate, and l-lysine ethyl ester dihydrochloride. To monitor the degradation process of PU-P, calcein was introduced into the backbone (PU-5) as a chromophore tracing in different sites of the body and undegradable fluorescent scaffold (CPU-5) as the control group. Both PU-P and PU-5 can be enzymatically degraded, and the degradation products are molecularly small and biosafe. Meanwhile, by virtue of calcein anchoring with urethane, polymer chains of PU-5 have maintained the conformational stability and extended the system conjugation, raising a structure-induced emission effect that successfully achieved a significant enhancement in the fluorescence intensity better than pristine calcein. Evidently, unlike the weak fluorescent response of CPU-5, PU-5 and its degradation can be clearly imaged and monitored in real time after implantation in the subcutaneous tissue of nude mice. Meanwhile, the in situ osteogeneration has also been promoted after the two degradable scaffolds have been implanted in the rabbit femoral condyles and degraded with time. To sum up, the strategy of underpinning tracers into degradable polymer chains provides a possible and effective way for real-time monitoring of the degradation process of implants in vivo.
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Affiliation(s)
- Xiaoyu Lei
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Boyuan Yang
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Jie Chen
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Fang Yang
- Radboud Institute for Molecular Life Sciences, Department of Dentistry-Biomaterials, Radboud University Medical Center, Philips van Leydenlaan 25, Nijmegen 6525EX, The Netherlands
| | - Jiajing Tang
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Jihua Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, People's Republic of China
| | - Qing Zhao
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Jinzheng Zhang
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Jidong Li
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Yubao Li
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
| | - Yi Zuo
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, People's Republic of China
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Ivanec-Goranina R. Kinetic Study of Coprinus cinereus Peroxidase-Catalyzed Oxidation of 2,2'-Dihydroxyazobenzene. Int J Mol Sci 2024; 25:828. [PMID: 38255902 PMCID: PMC10815141 DOI: 10.3390/ijms25020828] [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: 12/07/2023] [Revised: 12/29/2023] [Accepted: 01/07/2024] [Indexed: 01/24/2024] Open
Abstract
Azo dyes are of concern due to their harmful effects on the environment and human health. The oxidation of 2,2'-dihydroxyazobenzene (DHAB) catalyzed with recombinant Coprinus cinereus (rCiP) peroxidase was investigated. The kinetic measurements were performed using the spectrophotometric and fluorimetric methods. The dependences of the initial reaction rates on enzyme, substrate and hydrogen peroxide concentrations during DHAB oxidation were established, and bimolecular constants of enzyme interaction with DHAB were calculated. This research demonstrated that the initial biocatalytic oxidation rates of DHAB depend on the pH and the estimated pKa values of the active forms of rCip. This study's findings thus contribute to a more comprehensive understanding of the biocatalytic oxidation of DHAB, providing valuable data for assessing the long-term toxicity, carcinogenesis and epigenetic effects of azo dyes in the environment.
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Affiliation(s)
- Rūta Ivanec-Goranina
- Department of Chemistry and Bioengineering, Faculty of Fundamental Sciences, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania
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Marinescu M, Popa CV, Tănase MA, Soare AC, Tablet C, Bala D, Cinteza LO, Diţu LM, Gifu IC, Petcu C. Synthesis, Characterization, DFT Study and Antifungal Activities of Some Novel 2-(Phenyldiazenyl)phenol Based Azo Dyes. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8162. [PMID: 36431651 PMCID: PMC9695727 DOI: 10.3390/ma15228162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/11/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
In recent decades, there has been an increased interest in azo compounds with special optical and biological properties. In this work, we report the preparation of novel azo-compounds with two and three -N=N- double bonds, using the classical method of synthesis, diazotization and coupling. The compounds were characterized by 1H-NMR, 13C-NMR, FTIR, UV-VIS and fluorescence spectra. DFT calculations were employed for determining the optical parameters, polarizability α, the total static dipole moment μtot, the quadrupole moment Q and the mean first polarizability βtot. All azo derivatives show strong fluorescence emission in solutions. The antioxidant and antifungal activities were determined and the influence of the number of azo bonds was discussed. The synthesized compounds exhibit remarkable efficiency in the growth reduction of standard and clinical isolated Candida strains, suggesting future applications as novel antifungal.
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Affiliation(s)
- Maria Marinescu
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 90 Soseaua Panduri, 050663 Bucharest, Romania
| | - Claudia Valentina Popa
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 90 Soseaua Panduri, 050663 Bucharest, Romania
- Laboratory of Pharmaco-Toxicology, National Institute for Medical Military Research Development “Cantacuzino”, 103 Splaiul Independentei, 050096 Bucharest, Romania
| | - Maria Antonia Tănase
- Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, 4-12 Blv. Regina Elisabeta, 030018 Bucharest, Romania
| | - Andreia Cristina Soare
- Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, 4-12 Blv. Regina Elisabeta, 030018 Bucharest, Romania
| | - Cristina Tablet
- Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, 4-12 Blv. Regina Elisabeta, 030018 Bucharest, Romania
- Faculty of Pharmacy, Titu Maiorescu University, 16 Gh. Sincai Blvd, 040317 Bucharest, Romania
| | - Daniela Bala
- Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, 4-12 Blv. Regina Elisabeta, 030018 Bucharest, Romania
| | - Ludmila Otilia Cinteza
- Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, 4-12 Blv. Regina Elisabeta, 030018 Bucharest, Romania
| | - Lia Mara Diţu
- Microbiology Department, Faculty of Biology, University of Bucharest, 3 Intrarea Portocalelor, 60101 Bucharest, Romania
| | - Ioana Catalina Gifu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania
| | - Cristian Petcu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania
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