1
|
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.
Collapse
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
| |
Collapse
|
2
|
Beaman HT, Howes B, Ganesh P, Monroe MBB. Shape memory polymer hydrogels with cell-responsive degradation mechanisms for Crohn's fistula closure. J Biomed Mater Res A 2022; 110:1329-1340. [PMID: 35218140 DOI: 10.1002/jbm.a.37376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 01/28/2022] [Accepted: 02/17/2022] [Indexed: 11/11/2022]
Abstract
Crohn's disease, a form of inflammatory bowel disease, commonly results in fistulas, tunneling wounds between portions of the urinary, reproductive, and/or digestive systems. These tunneling wounds cause pain, infection, and abscess formation. Of Crohn's patients with fistula formation, 83% undergo surgical intervention to either drain or bypass the fistula openings, and ~23% of these patients ultimately require bowel resections. Current treatment options, such as setons, fibrin glues, and bioprosthetic plugs, are prone to infection, dislodging, and/or require a secondary removal surgery. Thus, there is a need for fistula filling material that can be easily and stably implanted and then degraded during fistula healing to eliminate the need for removal. Here, the development of a shape memory polymer hydrogel foam containing polyvinyl alcohol (PVA) and cornstarch (CS) with a disulfide polyurethane crosslinker is presented. These materials undergo controlled degradation by amylase, which is present in the digestive tract, and by reducing thiol species such as glutathione/dithiothreitol. Increasing CS content and using lower molecular weight PVA can be used to increase the degradation rate of the materials while maintaining shape memory properties that could be utilized for easy implantation. This material platform is based on low-cost and easily accessible components and provides a biomaterial scaffold with cell-responsive degradation mechanisms for future potential use in Crohn's fistula treatment.
Collapse
Affiliation(s)
- Henry T Beaman
- Department of Biomedical and Chemical Engineering, Syracuse BioInspired Institute, Syracuse University, Syracuse, New York, USA
| | - Bryanna Howes
- Department of Chemistry, LeMoyne College, Syracuse, New York, USA
| | - Priya Ganesh
- Department of Biomedical and Chemical Engineering, Syracuse BioInspired Institute, Syracuse University, Syracuse, New York, USA
| | - Mary Beth Browning Monroe
- Department of Biomedical and Chemical Engineering, Syracuse BioInspired Institute, Syracuse University, Syracuse, New York, USA
| |
Collapse
|
3
|
Zhou Z, Wang Y, Qian Y, Pan X, Zhu J, Zhang Z, Qian Z, Sun Z, Pi B. Cystine dimethyl ester cross-linked PEG-poly(urethane-urea)/nano-hydroxyapatite composited biomimetic scaffold for bone defect repair. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 31:407-422. [PMID: 31747530 DOI: 10.1080/09205063.2019.1696004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Polyurethane (PU) and polyurea (PUA) materials have shown significant potential for application in tissue repair. Herein, we design a glycerol ethoxylate (PEG)-based poly(urethane-urea) for bone tissue repair. The polymer precursor was prepared from the reaction of PEG and isophorone diisocyanate (IPDI). The cystine dimethyl ester was used as a cross-linker for the preparation of poly(urethane-urea) elastomers. The material was further strengthened by physical blending of nano-hydroxyapatite (nHA). The physical and biological properties of final material were evaluated by mechanical testing, scanning electron microscopy characterization, degradation tests, cell proliferation and cell differentiation assays. The obtained scaffolds showed good mechanical strength, excellent biocompatibility and osteogenic capability. All the evidences demonstrated that this type of materials has good prospects for bone tissue repair application.
Collapse
Affiliation(s)
- Zhangzhe Zhou
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yimeng Wang
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuqing Qian
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Xiangqiang Pan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Jian Zhu
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Zhengbiao Zhang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Zhonglai Qian
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhiyong Sun
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bin Pi
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
4
|
Wang Y, Li Y, Bai J, Li Z, Hu G. A Robust and High Self‐Healing Efficiency Poly(Urea‐Urethane) Based on Disulfide Bonds with Cost‐Effective Strategy. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900340] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yulong Wang
- Institute of Macromolecules and Bioengineering North University of China No. 3 College Road Taiyuan Shanxi 030051 China
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Yaqiong Li
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Jingjing Bai
- Institute of Macromolecules and Bioengineering North University of China No. 3 College Road Taiyuan Shanxi 030051 China
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Zhenzhong Li
- Department of Materials Engineering Taiyuan Institute of Technology No. 31 Xinlan Road Taiyuan Shanxi 030008 China
| | - Guosheng Hu
- Institute of Macromolecules and Bioengineering North University of China No. 3 College Road Taiyuan Shanxi 030051 China
| |
Collapse
|
5
|
Ali DK, Al-Zuheiri AM, Sweileh BA. pH and reduction sensitive bio-based polyamides derived from renewable dicarboxylic acid monomers and cystine amino acid. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2017. [DOI: 10.1080/1023666x.2017.1298012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Dalia K. Ali
- Department of Chemistry, School of Science, The University of Jordan, Amman, Jordan
| | - Aya M. Al-Zuheiri
- Department of Chemistry, School of Science, The University of Jordan, Amman, Jordan
| | - Bassam A. Sweileh
- Department of Chemistry, School of Science, The University of Jordan, Amman, Jordan
| |
Collapse
|
6
|
Wang X, Zhang J, Cheng R, Meng F, Deng C, Zhong Z. Facile Synthesis of Reductively Degradable Biopolymers Using Cystamine Diisocyanate as a Coupling Agent. Biomacromolecules 2016; 17:882-90. [PMID: 26810050 DOI: 10.1021/acs.biomac.5b01578] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Reductively degradable biopolymers have emerged as a unique class of smart biomedical materials. Here, a functional coupling agent, cystamine diisocyanate (CDI), was designed to offer a facile access to reductively degradable biopolymers via polycondensation with various diols. CDI was readily obtained with a decent yield of 46% by reacting cystamine dihydrochloride with triphosgene. The polycondensation of oligo(ethylene glycol) diol (Mn = 0.4 or 1.5 kg/mol) or oligo(ε-caprolactone) diol (Mn = 0.53 kg/mol) with CDI in N,N-dimethylformamide at 60 °C using dibutyltin dilaurate as a catalyst afforded reductively degradable poly(ethylene glycol) (SSPEG, Mn = 6.2-76.8 kg/mol) or poly(ε-caprolactone) (SSPCL, Mn = 6.8-16.3 kg/mol), in which molecular weights were well controlled by diol/CDI molar ratios. Moreover, PEG-SSPCL-PEG triblock copolymers could be readily prepared by reacting dihydroxyl-terminated SSPCL with PEG-isocyanate derivative. PEG-SSPCL-PEG with an Mn of 5.0-16.3-5.0 kg/mol formed small-sized micelles with an average diameter of about 85 nm in PB buffer. The in vitro release studies using doxorubicin (DOX) as a model drug showed that, in sharp contrast to reduction-insensitive PEG-PCL(HDI)-PEG controls, drug release from PEG-SSPCL-PEG micelles was fast and nearly complete in 24 h under a reductive condition containing 10 mM glutathione. The confocal microscopy experiments in drug-resistant MCF-7 cells (MCF-7/ADR) displayed efficient cytoplasmic DOX release from PEG-SSPCL-PEG micelles. MTT assays revealed that DOX-loaded PEG-SSPCL-PEG micelles were much more potent against MCF-7/ADR cells than reduction-insensitive PEG-PCL(HDI)-PEG controls (IC50: 6.3 vs 55.4 μg/mL). It should further be noted that blank PEG-SSPCL-PEG micelles were noncytotoxic up to a tested concentration of 1 mg/mL. Hence, cystamine diisocyanate appears to be an innovative coupling agent that facilitates versatile synthesis of biocompatible and reductively degradable biopolymers.
Collapse
Affiliation(s)
- Xiuxiu Wang
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University , Suzhou, 215123, People's Republic of China
| | - Jian Zhang
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University , Suzhou, 215123, People's Republic of China
| | - Ru Cheng
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University , Suzhou, 215123, People's Republic of China
| | - Fenghua Meng
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University , Suzhou, 215123, People's Republic of China
| | - Chao Deng
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University , Suzhou, 215123, People's Republic of China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University , Suzhou, 215123, People's Republic of China
| |
Collapse
|
7
|
Xu C, Huang Y, Wu J, Tang L, Hong Y. Triggerable Degradation of Polyurethanes for Tissue Engineering Applications. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20377-88. [PMID: 26312436 PMCID: PMC10965041 DOI: 10.1021/acsami.5b06242] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Tissue engineered and bioactive scaffolds with different degradation rates are required for the regeneration of diverse tissues/organs. To optimize tissue regeneration in different tissues, it is desirable that the degradation rate of scaffolds can be manipulated to comply with various stages of tissue regeneration. Unfortunately, the degradation of most degradable polymers relies solely on passive controlled degradation mechanisms. To overcome this challenge, we report a new family of reduction-sensitive biodegradable elastomeric polyurethanes containing various amounts of disulfide bonds (PU-SS), in which degradation can be initiated and accelerated with the supplement of a biological product: antioxidant-glutathione (GSH). The polyurethanes can be processed into films and electrospun fibrous scaffolds. Synthesized materials exhibited robust mechanical properties and high elasticity. Accelerated degradation of the materials was observed in the presence of GSH, and the rate of such degradation depends on the amount of disulfide present in the polymer backbone. The polymers and their degradation products exhibited no apparent cell toxicity while the electrospun scaffolds supported fibroblast growth in vitro. The in vivo subcutaneous implantation model showed that the polymers prompt minimal inflammatory responses, and as anticipated, the polymer with the higher disulfide bond amount had faster degradation in vivo. This new family of polyurethanes offers tremendous potential for directed scaffold degradation to promote maximal tissue regeneration.
Collapse
Affiliation(s)
- Cancan Xu
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
- Joint Biomedical Engineering Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yihui Huang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
- Joint Biomedical Engineering Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jinglei Wu
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
- Joint Biomedical Engineering Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
- Joint Biomedical Engineering Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yi Hong
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
- Joint Biomedical Engineering Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| |
Collapse
|
8
|
Galbis JA, García-Martín MDG, de Paz MV, Galbis E. Synthetic Polymers from Sugar-Based Monomers. Chem Rev 2015; 116:1600-36. [DOI: 10.1021/acs.chemrev.5b00242] [Citation(s) in RCA: 238] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Juan A. Galbis
- Department of Organic and
Pharmaceutical Chemistry, University of Seville, 41071 Seville, Spain
| | | | - M. Violante de Paz
- Department of Organic and
Pharmaceutical Chemistry, University of Seville, 41071 Seville, Spain
| | - Elsa Galbis
- Department of Organic and
Pharmaceutical Chemistry, University of Seville, 41071 Seville, Spain
| |
Collapse
|
9
|
Study of thermal stability and degradation kinetics of polyurethane–ureas by thermogravimetry. IRANIAN POLYMER JOURNAL 2015. [DOI: 10.1007/s13726-015-0367-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
10
|
Sun H, Cheng R, Deng C, Meng F, Dias AA, Hendriks M, Feijen J, Zhong Z. Enzymatically and Reductively Degradable α-Amino Acid-Based Poly(ester amide)s: Synthesis, Cell Compatibility, and Intracellular Anticancer Drug Delivery. Biomacromolecules 2015; 16:597-605. [DOI: 10.1021/bm501652d] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Huanli Sun
- Biomedical
Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional
Polymer Design and Application, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Ru Cheng
- Biomedical
Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional
Polymer Design and Application, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Chao Deng
- Biomedical
Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional
Polymer Design and Application, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Fenghua Meng
- Biomedical
Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional
Polymer Design and Application, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Aylvin A. Dias
- DSM Biomedical, Koestraat 1, Geleen 6167 RA, The Netherlands
| | - Marc Hendriks
- DSM Biomedical, Koestraat 1, Geleen 6167 RA, The Netherlands
| | - Jan Feijen
- Biomedical
Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional
Polymer Design and Application, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
- Department
of Polymer Chemistry and Biomaterials, Institute for Biomedical Technology
and Technical Medicine (MIRA), Faculty of Science and Technology, University of Twente, Enschede, The Netherlands
| | - Zhiyuan Zhong
- Biomedical
Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional
Polymer Design and Application, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China
| |
Collapse
|
11
|
Gu Z, Wang F, Lu H, Wang X, Zheng Z. Trypsin-inspired poly(urethane-urea)s based on poly-lysine oligomer segment. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:311-21. [PMID: 25584962 DOI: 10.1080/09205063.2014.998589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A new kind of biodegradable poly(urethane-urea)s based on poly-lysine oligomer used as the soft segment was synthesized and characterized. In vitro degradation behavior of poly (urethane-urea)s was investigated, and was assessed by (1)H NMR and mass loss. The results indicated that the peptide bonds in poly(urethane-urea)s were effectively cleaved in simulated pancreatic juice containing trypsin, while those in buffer solution without trypsin remained unaffected. The degradability was obviously improved by introducing poly-lysine oligomer into the main chain of poly(urethane-urea)s. The results of cells viability test indicated that the poly (urethane-urea)s showed a good biocompatibility on endothelial cells. The thermostability and hydrophilicity of poly(urethane-urea)s increased with increase in poly-lysine oligomer content.
Collapse
Affiliation(s)
- Zhenqian Gu
- a School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites , Shanghai Jiao Tong University , Shanghai 200240 , P.R. China
| | | | | | | | | |
Collapse
|
12
|
Sabitha M, Rajiv S. Synthesis and characterization of biocompatible tigecycline imbibed electrospun poly ε-caprolactone urethane urea fibers. RSC Adv 2015. [DOI: 10.1039/c4ra08458f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polyester urethane urea fibers were immersed in a broad spectrum glycylcycline antibiotic (tigecycline) and characterized for the treatment of infected wounds.
Collapse
Affiliation(s)
- M. Sabitha
- Department of Chemistry
- Anna University
- Chennai
- India-600025
| | - Sheeja Rajiv
- Department of Chemistry
- Anna University
- Chennai
- India-600025
| |
Collapse
|
13
|
Phillips DJ, Gibson MI. Redox-sensitive materials for drug delivery: targeting the correct intracellular environment, tuning release rates, and appropriate predictive systems. Antioxid Redox Signal 2014; 21:786-803. [PMID: 24219144 DOI: 10.1089/ars.2013.5728] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
SIGNIFICANCE The development of responsive drug delivery systems (DDS) holds great promise as a tool for improving the pharmacokinetic properties of drug compounds. Redox-sensitive systems are particularly attractive given the rich variety of redox gradients present in vivo. These gradients, where the circulation is generally considered oxidizing and the cellular environment is substantially more reducing, provide attractive options for targeted, specific cargo delivery. RECENT ADVANCES Experimental evidence suggests that a "one size fits all" redox gradient does not exist. Rather, there are subtle differences in redox potential within a cell, while the chemical nature of reducing agents in these microenvironments varies. Recent works have demonstrated an ability to modulate the degradation rate of redox-susceptible groups and, hence, provide new tools to engineer precision-targeted DDS. CRITICAL ISSUES Modern synthetic and macromolecular chemistry provides access to a wide range of redox-susceptible architectures. However, in order to utilize these in real applications, the actual chemical nature of the redox-susceptible group, the sub-cellular location being targeted, and the redox microenvironment being encountered should be considered in detail. This is critical to avoid the over-simplification possible when using non-biological reducing agents, which may provide inaccurate kinetic information, and to ensure these materials can be advanced beyond simple "on/off" systems. Furthermore, a strong case can be made for the use of biorelevant reducing agents such as glutathione when demonstrating a materials redox response. FUTURE DIRECTIONS A further understanding of the complexities of the extra- and intracellular microenvironments would greatly assist with the design and application of DDS.
Collapse
Affiliation(s)
- Daniel J Phillips
- Department of Chemistry, University of Warwick , Coventry, United Kingdom
| | | |
Collapse
|
14
|
Oprea S, Gradinariu P, Joga A, Oprea V. Synthesis, structure and fungal resistance of sulfadiazine-based polyurethane ureas. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.04.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
15
|
Wang J, Zheng Z, Wang Q, Du P, Shi J, Wang X. Synthesis and characterization of biodegradable polyurethanes based onL-cystine/cysteine and poly(ϵ-caprolactone). J Appl Polym Sci 2012. [DOI: 10.1002/app.38613] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
16
|
Wang J, Zheng Z, Chen L, Tu X, Wang X. Glutathione-responsive biodegradable poly(urea-urethane)s containing L-cystine-based chain extender. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 24:831-48. [DOI: 10.1080/09205063.2012.722432] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jing Wang
- a State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240 , P.R. China
| | - Zhen Zheng
- a State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240 , P.R. China
| | - Liang Chen
- a State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240 , P.R. China
| | - Xiaoxiong Tu
- a State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240 , P.R. China
| | - Xinling Wang
- a State Key Laboratory of Metal Matrix Composites, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240 , P.R. China
| |
Collapse
|
17
|
Wang Y, Wu G, Li X, Chen J, Wang Y, Ma J. Temperature-triggered redox-degradable poly(ether urethane) nanoparticles for controlled drug delivery. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35186b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|