1
|
Choudhury N, Cho S, Baek J, Hong J, Kim BS. Bacterial-Infection-Triggered Release of Antibacterial Aldehyde from Triblock Copolyether Hydrogels. Biomacromolecules 2024. [PMID: 38996363 DOI: 10.1021/acs.biomac.4c00586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Bacterial infections pose a significant threat to public health worldwide. Hydrogel-based biomaterials have proven to be particularly useful in addressing persistent bacterial infections due to their stimuli-responsive degradability, high biocompatibility, ability to release antibacterial agents on demand, and long-lasting antibacterial activity. Herein, we fabricated ABA-type triblock copolyether hydrogels, wherein, hexanal, a bioactive aldehyde with antibacterial activity, was affixed to the hydrophobic micellar core via acetal linkage. The hydrogel exhibited degradation under acidic environment via the hydrolysis of acetal linkages, leading to the concomitant release of hexanal to exhibit highly potent bactericidal activity against both Escherichia coli and Staphylococcus aureus. Furthermore, a dual-mode release of the model therapeutic agent Nile Red from the hydrophobic micellar core of the hydrogel in conjunction with hexanal was demonstrated using this system. We anticipate that this study will provide a new platform for the development of hydrogels with tailorable release profiles for biologically active compounds that are activated by the acidification triggered by bacterial infection.
Collapse
Affiliation(s)
- Neha Choudhury
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Seongeun Cho
- Department of Chemical & Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jinsu Baek
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Jinkee Hong
- Department of Chemical & Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Byeong-Su Kim
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| |
Collapse
|
2
|
Mateus D, Sebastião AI, Frasco MF, Carrascal MA, Falcão A, Gomes CM, Neves B, Sales MGF, Cruz MT. Artificial Dendritic Cells: A New Era of Promising Antitumor Immunotherapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303940. [PMID: 37469192 DOI: 10.1002/smll.202303940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/03/2023] [Indexed: 07/21/2023]
Abstract
The accelerated development of antitumor immunotherapies in recent years has brought immunomodulation into the spotlight. These include immunotherapeutic treatments with dendritic cell (DC)-based vaccines which can elicit tumor-specific immune responses and prolong survival. However, this personalized treatment has several drawbacks, including being costly, labor-intensive, and time consuming. This has sparked interest in producing artificial dendritic cells (aDCs) to open up the possibility of standardized "off-the-shelf" protocols and circumvent the cumbersome and expensive personalized medicine. aDCs take advantage of materials that can be designed and tailored for specific clinical applications. Here, an overview of the immunobiology underlying antigen presentation by DCs is provided in an attempt to select the key features to be mimicked and/or improved through the development of aDCs. The inherent properties of aDCs that greatly impact their performance in vivo and, consequently, the fate of the triggered immune response are also outlined.
Collapse
Affiliation(s)
- Daniela Mateus
- Faculty of Pharmacy of the University of Coimbra, Coimbra, 3000-548, Portugal
- Center for Neuroscience and Cell Biology-CNC, University of Coimbra, Coimbra, 3004-504, Portugal
- BioMark@UC/CEB - LABBELS Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, Coimbra, 3030-790, Portugal
| | - Ana I Sebastião
- Faculty of Pharmacy of the University of Coimbra, Coimbra, 3000-548, Portugal
- Center for Neuroscience and Cell Biology-CNC, University of Coimbra, Coimbra, 3004-504, Portugal
| | - Manuela F Frasco
- BioMark@UC/CEB - LABBELS Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, Coimbra, 3030-790, Portugal
| | | | - Amílcar Falcão
- Faculty of Pharmacy of the University of Coimbra, Coimbra, 3000-548, Portugal
- Coimbra Institute for Biomedical Imaging and Translational Research, CIBIT, University of Coimbra, Coimbra, 3000-548, Portugal
| | - Célia M Gomes
- Coimbra Institute for Clinical and Biomedical Research, iCBR, Faculty of Medicine, University of Coimbra, Coimbra, 3000-548, Portugal
- Center for Innovation in Biomedicine and Biotechnology, CIBB, University of Coimbra, Coimbra, 3000-548, Portugal
| | - Bruno Neves
- Department of Medical Sciences and Institute of Biomedicine, iBiMED, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Maria G F Sales
- BioMark@UC/CEB - LABBELS Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, Coimbra, 3030-790, Portugal
| | - Maria T Cruz
- Faculty of Pharmacy of the University of Coimbra, Coimbra, 3000-548, Portugal
- Center for Neuroscience and Cell Biology-CNC, University of Coimbra, Coimbra, 3004-504, Portugal
| |
Collapse
|
3
|
Horvath D, Basler M. PLGA Particles in Immunotherapy. Pharmaceutics 2023; 15:pharmaceutics15020615. [PMID: 36839937 PMCID: PMC9965784 DOI: 10.3390/pharmaceutics15020615] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
Poly(lactic-co-glycolic acid) (PLGA) particles are a widely used and extensively studied drug delivery system. The favorable properties of PLGA such as good bioavailability, controlled release, and an excellent safety profile due to the biodegradable polymer backbone qualified PLGA particles for approval by the authorities for the application as a drug delivery platform in humas. In recent years, immunotherapy has been established as a potent treatment option for a variety of diseases. However, immunomodulating drugs rely on targeted delivery to specific immune cell subsets and are often rapidly eliminated from the system. Loading of PLGA particles with drugs for immunotherapy can protect the therapeutic compounds from premature degradation, direct the drug delivery to specific tissues or cells, and ensure sustained and controlled drug release. These properties present PLGA particles as an ideal platform for immunotherapy. Here, we review recent advances of particulate PLGA delivery systems in the application for immunotherapy in the fields of allergy, autoimmunity, infectious diseases, and cancer.
Collapse
Affiliation(s)
- Dennis Horvath
- Division of Immunology, Department of Biology, University of Konstanz, D-78457 Konstanz, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, D-78457 Konstanz, Germany
| | - Michael Basler
- Division of Immunology, Department of Biology, University of Konstanz, D-78457 Konstanz, Germany
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280 Kreuzlingen, Switzerland
- Correspondence:
| |
Collapse
|
4
|
Chen X, Chen DR, Liu H, Yang L, Zhang Y, Bu LL, Sun ZJ, Cai L. Local delivery of gambogic acid to improve anti-tumor immunity against oral squamous cell carcinoma. J Control Release 2022; 351:381-393. [PMID: 36096364 DOI: 10.1016/j.jconrel.2022.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022]
Abstract
Oral squamous cell carcinoma (OSCC) accounts for nearly 90% of oral cavity malignancies. However, despite significant advances in the last four decades, little improvement has been achieved in the overall survival rates for OSCC patients. While gambogic acid (GA) is a potential candidate compound for treating a variety of malignancies, its anti-cancer impact on OSCC has not to be completely investigated. The tumor immune microenvironment (TIME) has been proven to play a crucial role in the prognosis of cancer patients. Although there are few reports on the T cell activation effect of GA, the regulation of GA on the TIME of OSCC has barely been studied yet. In this study, GA was applied to treat OSCC-bearing mice through in situ controlled release. First, GA-loaded mPEG2000-PCL micelles (GA-MIC) were prepared by the thin-film hydration method to improve the aqueous dispersibility of GA. Second, poly(D, l-lactide)-poly(ethylene glycol)-poly(D, l-lactide) (PLEL) was synthesized for thermosensitive hydrogel preparation. Third, GA-MIC was mixed with PLEL to form an injectable therapeutic hydrogel (GA-MIC-GEL). The anti-tumor and TIME regulation effects of GA-MIC-GEL on tumor-bearing mice were further examined. The results showed that the thermosensitive GA-MIC-GEL with sensitive sol-gel transition characteristics could form hydrogel at 37 °C within 24 s, facilitating the local delivery and sustained GA release. Biochemical, hematological, and pathological analysis proved that GA-MIC-GEL has good biological safety. Moreover, GA-MIC-GEL promoted an obvious regression of both primary and distant tumors on the OSCC mouse models. Mechanically, GA-MIC-GEL down-regulated the expression of PD-1, increased the frequency of cytotoxic T cells and reduced the immunosuppressive cellular components, which boosted the anti-tumor immunity of OSCC-bearing mice. The constructed thermosensitive hydrogel for local delivery of GA has provided a safe and effective strategy with great potential for OSCC therapy.
Collapse
Affiliation(s)
- Xinmian Chen
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - De-Run Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, Department of Oral and Maxillofacial Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Hongmei Liu
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Lei Yang
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Yutao Zhang
- Department of Pathology, The First People's Hospital of Zigong, Zigong 643000, China
| | - Lin-Lin Bu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, Department of Oral and Maxillofacial Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Zhi-Jun Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, Department of Oral and Maxillofacial Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Lulu Cai
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China.
| |
Collapse
|
5
|
Alzahrani A, Nyavanandi D, Mandati P, Adel Ali Youssef A, Narala S, Bandari S, Repka M. A systematic and robust assessment of hot-melt extrusion-based amorphous solid dispersions: Theoretical prediction to practical implementation. Int J Pharm 2022; 624:121951. [PMID: 35753536 DOI: 10.1016/j.ijpharm.2022.121951] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/03/2022] [Accepted: 06/20/2022] [Indexed: 10/17/2022]
Abstract
Amorphous solid dispersions (ASDs) have gained attention as a formulation strategy in recent years, with the potential to improve the apparent solubility and, hence, the oral bioavailability of poorly soluble drugs. The process of formulating ASDs is commonly faced with challenges owing to the intrinsic physical and chemical instability of the initial amorphous form and the long-term physical stability of drug formulations. Numerous research publications on hot-melt extrusion (HME) technology have demonstrated that it is the most efficient approach for manufacturing reasonably stable ASDs. The HME technique has been established as a faster scale-up production strategy for formulation evaluation and has the potential to minimize the time to market. Thermodynamic evaluation and theoretical predictions of drug-polymer solubility and miscibility may assist to reduce the product development cost by HME. This review article highlights robust and established prediction theories and experimental approaches for the selection of polymeric carriers for the development of hot melt extrusion based stable amorphous solid dispersions (ASDs). In addition, this review makes a significant contribution to the literature as a pilot guide for ASD assessment, as well as to confirm the drug-polymer compatibility and physical stability of HME-based formulations.
Collapse
Affiliation(s)
- Abdullah Alzahrani
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677; Department of Pharmacy, East Jeddah Hospital, Ministry of Health, Jeddah 22253, Saudi Arabia
| | - Dinesh Nyavanandi
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677
| | - Preethi Mandati
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677
| | - Ahmed Adel Ali Youssef
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677; Department of Pharmaceutical Technology, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Sagar Narala
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677
| | - Suresh Bandari
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677
| | - Michael Repka
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677; Pii Center for Pharmaceutical Technology, The University of Mississippi, University, MS 38677, USA.
| |
Collapse
|
6
|
Nakagawa Y, Oki Y, Da X, Singh Chandel AK, Ohta S, Ito T. Injectable bottlebrush triblock copolymer hydrogel crosslinked with ferric ions. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
7
|
Cichoń K, Kost B, Basko M. Synthesis and properties of ABA-triblock copolymers from polyester A-blocks and easily degradable polyacetal B-blocks. Polym Chem 2022. [DOI: 10.1039/d2py00620k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Novel, degradable amphiphilic ABA triblock copolymers with a polyacetal chain as the hydrophilic internal block and polyesters as external hydrophobic segments were designed and prepared for the first time in a controlled manner.
Collapse
Affiliation(s)
- Karolina Cichoń
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Bartłomiej Kost
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Malgorzata Basko
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| |
Collapse
|
8
|
PCL-PEG copolymer based injectable thermosensitive hydrogels. J Control Release 2022; 343:217-236. [DOI: 10.1016/j.jconrel.2022.01.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 01/09/2023]
|
9
|
Wang R, Zhang H, Jiang M, Wang Z, Zhou G. Dynamics-Driven Controlled Polymerization to Synthesize Fully Renewable Poly(ester–ether)s. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Rui Wang
- Division of Energy Materials (DNL 22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, Liaoning, China
| | - Houyu Zhang
- JiLin University, State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, Jilin, China
| | - Min Jiang
- Division of Energy Materials (DNL 22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, Liaoning, China
| | - Zhipeng Wang
- Division of Energy Materials (DNL 22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, Liaoning, China
| | - Guangyuan Zhou
- Division of Energy Materials (DNL 22), Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, Liaoning, China
- Jiangsu Sino-Tech Polymerization New Materials Industry Technology Research Institute, 6 Qingyang Road, Changzhou 213125, Jiangsu, China
| |
Collapse
|
10
|
Raffaelli C, Ellenbroek WG. Stress relaxation in tunable gels. SOFT MATTER 2021; 17:10254-10262. [PMID: 34821243 PMCID: PMC8612457 DOI: 10.1039/d1sm00091h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/25/2021] [Indexed: 06/13/2023]
Abstract
Hydrogels are a staple of biomaterials development. Optimizing their use in e.g. drug delivery or tissue engineering requires a solid understanding of how to adjust their mechanical properties. Here, we present a numerical study of a class of hydrogels made of 4-arm star polymers with a combination of covalent and reversible crosslinks. This design principle combines the flexibility and responsivity associated with reversible linkers with stability provided by chemical crosslinks. In molecular dynamics simulations of such hybrid gel networks, we observe that the strength of the reversible bonds can tune the material from solid to fluid. We identify at what fraction of reversible bonds this tunability is most pronounced, and find that the stress relaxation time of the gels in this tunable regime is set directly by the average lifetime of the reversible bonds. As our design is easy to realize in the already widely-used tetraPEG gel setting, our work will provide guidelines to improve the mechanical performance of biomedical gels.
Collapse
Affiliation(s)
- Chiara Raffaelli
- Department of Applied Physics, Eindhoven University of Technology, P. O. Box 513, NL-5600 MB Eindhoven, The Netherlands.
| | - Wouter G Ellenbroek
- Department of Applied Physics, Eindhoven University of Technology, P. O. Box 513, NL-5600 MB Eindhoven, The Netherlands.
- Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. Box 513, NL-5600 MB Eindhoven, The Netherlands
| |
Collapse
|
11
|
Shin GR, Kim HE, Kim JH, Choi S, Kim MS. Advances in Injectable In Situ-Forming Hydrogels for Intratumoral Treatment. Pharmaceutics 2021; 13:1953. [PMID: 34834369 PMCID: PMC8624884 DOI: 10.3390/pharmaceutics13111953] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/08/2021] [Accepted: 11/16/2021] [Indexed: 12/25/2022] Open
Abstract
Chemotherapy has been linked to a variety of severe side effects, and the bioavailability of current chemotherapeutic agents is generally low, which decreases their effectiveness. Therefore, there is an ongoing effort to develop drug delivery systems to increase the bioavailability of these agents and minimize their side effects. Among these, intratumoral injections using in situ-forming hydrogels can improve drugs' bioavailability and minimize drugs' accumulation in non-target organs or tissues. This review describes different types of injectable in situ-forming hydrogels and their intratumoral injection for cancer treatment, after which we discuss the antitumor effects of intratumoral injection of drug-loaded hydrogels. This review concludes with perspectives on the future applicability of, and challenges for, the adoption of this drug delivery technology.
Collapse
Affiliation(s)
- Gi Ru Shin
- Department of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtong-gu, Suwon-si 16499, Gyeonggi-do, Korea; (G.R.S.); (H.E.K.); (J.H.K.); (S.C.)
| | - Hee Eun Kim
- Department of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtong-gu, Suwon-si 16499, Gyeonggi-do, Korea; (G.R.S.); (H.E.K.); (J.H.K.); (S.C.)
| | - Jae Ho Kim
- Department of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtong-gu, Suwon-si 16499, Gyeonggi-do, Korea; (G.R.S.); (H.E.K.); (J.H.K.); (S.C.)
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtong-gu, Suwon-si 16499, Gyeonggi-do, Korea; (G.R.S.); (H.E.K.); (J.H.K.); (S.C.)
| | - Moon Suk Kim
- Department of Molecular Science and Technology, Ajou University, 206, World Cup-ro, Yeongtong-gu, Suwon-si 16499, Gyeonggi-do, Korea; (G.R.S.); (H.E.K.); (J.H.K.); (S.C.)
- Research Institute, Medipolymer, 274-Samsung-ro, Suwon-si 16522, Gyeonggi-do, Korea
| |
Collapse
|
12
|
Stimuli-Responsive Polymeric Nanosystems for Controlled Drug Delivery. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11209541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Biocompatible nanosystems based on polymeric materials are promising drug delivery nanocarrier candidates for antitumor therapy. However, the efficacy is unsatisfying due to nonspecific accumulation and drug release of the nanoparticles in normal tissue. Recently, the nanosystems that can be triggered by tumor-specific stimuli have drawn great interest for drug delivery applications due to their controllable drug release properties. In this review, various polymers and external stimuli that can be employed to develop stimuli-responsive polymeric nanosystems are discussed, and finally, we delineate the challenges in designing this kind of Nanomedicine to improve the therapeutic efficacy.
Collapse
|
13
|
Gangolphe L, Leon-Valdivieso CY, Nottelet B, Déjean S, Bethry A, Pinese C, Bossard F, Garric X. Electrospun microstructured PLA-based scaffolds featuring relevant anisotropic, mechanical and degradation characteristics for soft tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 129:112339. [PMID: 34579931 DOI: 10.1016/j.msec.2021.112339] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/22/2021] [Accepted: 07/24/2021] [Indexed: 12/30/2022]
Abstract
Electrospun scaffolds combine suitable structural characteristics that make them strong candidates for their use in tissue engineering. These features can be tailored to optimize other physiologically relevant attributes (e.g. mechanical anisotropy and cellular affinity) while ensuring adequate degradation rates of the biomaterial. Here, we present the fabrication of microstructured scaffolds by using a combination of micropatterned electrospinning collectors (honeycomb- or square-patterned) and poly(lactic acid) (PLA)-based copolymers (linear or star-shaped). The resulting materials showed appropriate macropore size and fiber alignment that were key parameters to enhance their anisotropic properties in protraction. Moreover, their elastic modulus, which was initially similar to that of soft tissues, gradually changed in hydrolytic conditions, matching the degradation profile in a 2- to 3-month period. Finally, honeycomb-structured scaffolds exhibited enhanced cellular proliferation compared to standard electrospun mats, while cell colonization was shown to be guided by the macropore contour. Taking together, these results provide new insight into the rational design of microstructured materials that can mimic the progressive evolution of properties in soft tissue regeneration.
Collapse
Affiliation(s)
- Louis Gangolphe
- Department of Polymers for Health and Biomaterials, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, France; Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, 38000 Grenoble, France
| | - Christopher Y Leon-Valdivieso
- Department of Polymers for Health and Biomaterials, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, France
| | - Benjamin Nottelet
- Department of Polymers for Health and Biomaterials, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, France
| | - Stéphane Déjean
- Department of Polymers for Health and Biomaterials, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, France
| | - Audrey Bethry
- Department of Polymers for Health and Biomaterials, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, France
| | - Coline Pinese
- Department of Polymers for Health and Biomaterials, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, France
| | - Frédéric Bossard
- Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, 38000 Grenoble, France.
| | - Xavier Garric
- Department of Polymers for Health and Biomaterials, Max Mousseron Institute of Biomolecules (IBMM), UMR CNRS 5247, University of Montpellier, France.
| |
Collapse
|
14
|
Swierczynski MJ, Ball ZT. One-Step Protein-Polymer Conjugates from Boronic-Acid-Functionalized Polymers. Bioconjug Chem 2020; 31:2494-2498. [PMID: 33078937 DOI: 10.1021/acs.bioconjchem.0c00516] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Polymer-protein conjugates are hybrid materials with interesting and useful properties. Methods to prepare diverse diblock materials of this sort often struggle to deal with the complexity and size of reagents, and so polymer-protein conjugation represents a stringent testing ground for nontraditional bioconjugation methods, such as metal-catalyzed arylation. This work demonstrates a simple Ni2+-promoted arylation of cysteine residues with end-functionalized polymer-boronic acid reagents, and explores some molecular and physical properties possible in these hybrid structures.
Collapse
Affiliation(s)
- Michael J Swierczynski
- Department of Chemistry, Rice University, 6100 Main Street, Bioscience Research Collaborative, Houston, Texas 77005, United States
| | - Zachary T Ball
- Department of Chemistry, Rice University, 6100 Main Street, Bioscience Research Collaborative, Houston, Texas 77005, United States
| |
Collapse
|
15
|
Kausar A. Shape memory polystyrene-based nanocomposite: present status and future opportunities. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1840919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ayesha Kausar
- Nanosciences Division, National Center For Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| |
Collapse
|
16
|
Lo YL, Huang XS, Chen HY, Huang YC, Liao ZX, Wang LF. ROP and ATRP fabricated redox sensitive micelles based on PCL-SS-PMAA diblock copolymers to co-deliver PTX and CDDP for lung cancer therapy. Colloids Surf B Biointerfaces 2020; 198:111443. [PMID: 33203600 DOI: 10.1016/j.colsurfb.2020.111443] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/25/2020] [Accepted: 10/28/2020] [Indexed: 12/15/2022]
Abstract
Combining dual drugs in one vehicle to cancer cells offers spatiotemporal localization of drug at the site of action, leading to synergistic therapeutic effects and reduced side effects. To improve pH/redox responsiveness to the tumor microenvironments for cancer therapy, a pH/redox-responsive micelle based on poly(ε-caprolactone)-SS-poly(methacrylic acid) (PCL-SS-PMAA) diblock copolymer was fabricated for dual drug delivery. The PCL-SS-PMAA was formulated into a core-shell micelle (PSPm) in an aqueous solution. The critical micelle concentration (CMC) values of PSPm were 7.94 × 10-3 mg mL-1 at pH 5.0 and 1.00 × 10-2 mg mL-1 at pH 7.4. The hydrodynamic diameters of PSPm were within 210-270 nm, depending on pH values. Changes in morphology and size of PSPm were clearly observed before and after exposure to a reducing agent. Paclitaxel (PTX) was encapsulated into the core and cisplatin (CDDP) was chelated on the shell of PSPm, with both PTX and CDDP being efficiently released from PSPm in the presence of a reducing agent in an acid condition. MTT and annexin V/propidium iodide dual staining results demonstrated that co-loading of CDDP and PTX into PSPm had a synergistic effect in killing lung cancer cells and exerted superior antitumor activity over the combination of single drug-loaded PSPm or the combination of free-CDDP and free-PTX at equivalent drug amounts. Hence, encapsulating the dual drugs into PSPm exhibits a synergistic effect for potential lung cancer therapy.
Collapse
Affiliation(s)
- Yu-Lun Lo
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Xiao-Shan Huang
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan
| | - Hsuan-Ying Chen
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Yuan-Chun Huang
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Zi-Xian Liao
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan.
| | - Li-Fang Wang
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung, 807, Taiwan; Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan.
| |
Collapse
|
17
|
Tong X, Peng W, Zhang M, Wang X, Zhang G, Long S, Yang J. A new class of poly(ether‐
block
‐amide)s based on semi‐aromatic polyamide: synthesis, characterization and structure–property relations. POLYM INT 2020. [DOI: 10.1002/pi.6119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xin Tong
- College of Polymer Science and Engineering Sichuan University Chengdu People's Republic of China
| | - Wei‐Ming Peng
- College of Polymer Science and Engineering Sichuan University Chengdu People's Republic of China
| | - Mei‐Ling Zhang
- Analytical and Testing Center Sichuan University Chengdu People's Republic of China
| | - Xiao‐Jun Wang
- Analytical and Testing Center Sichuan University Chengdu People's Republic of China
- State Key Laboratory of Organic–Inorganic Composites Beijing People's Republic of China
| | - Gang Zhang
- Analytical and Testing Center Sichuan University Chengdu People's Republic of China
| | - Sheng‐Ru Long
- Analytical and Testing Center Sichuan University Chengdu People's Republic of China
| | - Jie Yang
- Analytical and Testing Center Sichuan University Chengdu People's Republic of China
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu People's Republic of China
| |
Collapse
|
18
|
Girard E, Chagnon G, Moreau‐Gaudry A, Letoublon C, Favier D, Dejean S, Trilling B, Nottelet B. Evaluation of a biodegradable
PLA–PEG–PLA
internal biliary stent for liver transplantation: in vitro degradation and mechanical properties. J Biomed Mater Res B Appl Biomater 2020; 109:410-419. [DOI: 10.1002/jbm.b.34709] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/16/2020] [Accepted: 08/04/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Edouard Girard
- Univ. Grenoble Alpes, CNRS, Grenoble INP, CHU Grenoble Alpes, TIMC‐IMAG Grenoble France
- Département de chirurgie digestive et de l'urgence Centre Hospitalier Grenoble‐Alpes Grenoble France
| | - Grégory Chagnon
- Univ. Grenoble Alpes, CNRS, Grenoble INP, TIMC‐IMAG Grenoble France
| | - Alexandre Moreau‐Gaudry
- Univ. Grenoble Alpes, CNRS, Grenoble INP, CHU Grenoble Alpes, TIMC‐IMAG Grenoble France
- Univ. Grenoble Alpes, CNRS, Grenoble INP, TIMC‐IMAG Grenoble France
| | - Christian Letoublon
- Département de chirurgie digestive et de l'urgence Centre Hospitalier Grenoble‐Alpes Grenoble France
| | - Denis Favier
- Univ. Grenoble Alpes, CNRS, Grenoble INP, TIMC‐IMAG Grenoble France
| | - Stéphane Dejean
- IBMM Université de Montpellier, CNRS, ENSCM Montpellier France
| | - Bertrand Trilling
- Univ. Grenoble Alpes, CNRS, Grenoble INP, CHU Grenoble Alpes, TIMC‐IMAG Grenoble France
- Département de chirurgie digestive et de l'urgence Centre Hospitalier Grenoble‐Alpes Grenoble France
| | | |
Collapse
|
19
|
Improved surface adhesion and wound healing effect of madecassoside liposomes modified by temperature-responsive PEG-PCL-PEG copolymers. Eur J Pharm Sci 2020; 151:105373. [PMID: 32450220 DOI: 10.1016/j.ejps.2020.105373] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 12/12/2022]
Abstract
Madecassoside (MA) exhibits excellent therapeutic effects in wound healing and scar management. However, its high hydrophilic nature and low permeability through skin tissue limits its topical application. Liposomes are widely used to deliver drugs due to their high structural similarity and biocompatibility with cell membranes. However, normal liposome formulations are too fluid to maintain sufficient adhesion to the wound surface. In this study, in order to make an MA formulation conducive to topical administration, poly(ethylene glycol)-poly(ε-caprolactone)-poly(ethylene glycol) (PEG-PCL-PEG, PECE), a biodegradable and temperature-responsive copolymer material, was synthesized and applied to improve the adhesion properties of MA liposomes. The mean particle size of the PECE-modified MA liposomes was 213.43±4.68 nm, and the zeta potential was -23.80±15.37 mV under the optimal conditions of EPC (egg yolk lecithin) to PECE at a mass ratio of 1:1. Additionally, PECE-modified MA liposomes maintained a hydrogel state for better adhesion until the temperature reached 43°C. Furthermore, the PECE-modified MA liposomes showed superior wound contraction effects relative to the MA liposomes in second-degree burn experiments using a rat model. These results indicated that PECE-modified MA liposomes have better surface adhesion performance and healing effects than unmodified MA liposomes.
Collapse
|
20
|
Dendrimer-like AB2-type star polymers as nanocarriers for doxorubicin delivery to breast cancer cells: synthesis, characterization, in-vitro release and cytotoxicity studies. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02089-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
21
|
Le MQ, Gimel JC, Garric X, Nguyen-Pham TQ, Paniagua C, Riou J, Venier-Julienne MC. Modulation of protein release from penta-block copolymer microspheres. Eur J Pharm Biopharm 2020; 152:175-182. [PMID: 32416135 DOI: 10.1016/j.ejpb.2020.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/09/2020] [Accepted: 05/10/2020] [Indexed: 01/17/2023]
Abstract
Releasing a protein according to a zero-order profile without protein denaturation during the polymeric microparticle degradation process is very challenging. The aim of the current study was to develop protein-loaded microspheres with new PLGA based penta-block copolymers for a linear sustained protein release. Lysozyme was chosen as model protein and 40 µm microspheres were prepared using the solid-in-oil-in-water solvent extraction/evaporation process. Two types of PLGA-P188-PLGA penta-block copolymers were synthetized with two PLGA-segments molecular weight (20 kDa or 40 kDa). The resulting microspheres (50P20-MS and 50P40-MS) had the same size, an encapsulation efficiency around 50-60% but different porosities. Their protein release profiles were complementary: linear but non complete for 50P40-MS, non linear but complete for 50P20-MS. Two strategies, polymer blending and microsphere mixing, were considered to match the release to the desired profile. The (1:1) microsphere mixture was successful. It induced a bi-phasic release with a moderate initial burst (around 13%) followed by a nearly complete linear release for 8 weeks. This study highlighted the potential of this penta-block polymer where the PEO block mass ratio influence clearly the Tg and consequently the microsphere structure and the release behavior at 37 °C. The (1:1) mixture was a starting point but could be finely tuned to control the protein release.
Collapse
Affiliation(s)
- Minh-Quan Le
- Micro et Nanomedecines Translationnelles, MINT, UNIV Angers, UMR INSERM 1066, UMR CNRS 6021, Angers, France
| | - Jean-Christophe Gimel
- Micro et Nanomedecines Translationnelles, MINT, UNIV Angers, UMR INSERM 1066, UMR CNRS 6021, Angers, France
| | - Xavier Garric
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Montpellier, France
| | - Thao-Quyen Nguyen-Pham
- Micro et Nanomedecines Translationnelles, MINT, UNIV Angers, UMR INSERM 1066, UMR CNRS 6021, Angers, France
| | - Cédric Paniagua
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université Montpellier, ENSCM, Montpellier, France
| | - Jérémie Riou
- Micro et Nanomedecines Translationnelles, MINT, UNIV Angers, UMR INSERM 1066, UMR CNRS 6021, Angers, France; Methodology and Biostatistics Department, Delegation to Clinical Research and Innovation, Angers University Hospital, 49100 Angers, France
| | | |
Collapse
|
22
|
Scheiner KC, Coulter F, Maas-Bakker RF, Ghersi G, Nguyen TT, Steendam R, Duffy GP, Hennink WE, O’Cearbhaill ED, Kok RJ. Vascular Endothelial Growth Factor–Releasing Microspheres Based on Poly(ε-Caprolactone-PEG-ε-Caprolactone)-b-Poly(L-Lactide) Multiblock Copolymers Incorporated in a Three-Dimensional Printed Poly(Dimethylsiloxane) Cell Macroencapsulation Device. J Pharm Sci 2020; 109:863-870. [DOI: 10.1016/j.xphs.2019.10.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/11/2019] [Accepted: 10/15/2019] [Indexed: 12/12/2022]
|
23
|
Poly[2-(methacryloyloxy)ethyl choline phosphate] functionalized polylactic acid film with improved degradation resistance both in vitro and in vivo. Colloids Surf B Biointerfaces 2020; 185:110630. [DOI: 10.1016/j.colsurfb.2019.110630] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 12/29/2022]
|
24
|
Merlani M, Song Z, Wang Y, Yuan Y, Luo J, Barbakadze V, Chankvetadze B, Nakano T. Polymerization of Bulky of Oxirane Monomers Leading to Polyethers Exhibiting Intramolecular Charge Transfer Interactions. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Maia Merlani
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering Hokkaido University N21 W10, Kita‐ku Sapporo 001‐0021 Japan
- Kutateladze Institute of Pharmacochemistry Tbilisi State Medical University 36 Street P. Sarajishvili 0159 Tbilisi Georgia
| | - Zhiyi Song
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering Hokkaido University N21 W10, Kita‐ku Sapporo 001‐0021 Japan
| | - Yuting Wang
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering Hokkaido University N21 W10, Kita‐ku Sapporo 001‐0021 Japan
| | - Yuehui Yuan
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering Hokkaido University N21 W10, Kita‐ku Sapporo 001‐0021 Japan
| | - Jiyue Luo
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering Hokkaido University N21 W10, Kita‐ku Sapporo 001‐0021 Japan
| | - Vakhtang Barbakadze
- Kutateladze Institute of Pharmacochemistry Tbilisi State Medical University 36 Street P. Sarajishvili 0159 Tbilisi Georgia
| | - Bezhan Chankvetadze
- Department of Physical and Analytical Chemistry School of Exact and Natural Sciences Tbilisi State University Chavchavadze Avenue 1 0179 Tbilisi Georgia
| | - Tamaki Nakano
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering Hokkaido University N21 W10, Kita‐ku Sapporo 001‐0021 Japan
- Integrated Research Consortium on Chemical Sciences (IRCCS) Institute for Catalysis Hokkaido University N21 W10, Kita‐ku Sapporo 001‐0021 Japan
| |
Collapse
|
25
|
Sponchioni M, Capasso Palmiero U, Moscatelli D. Thermo-responsive polymers: Applications of smart materials in drug delivery and tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:589-605. [PMID: 31147031 DOI: 10.1016/j.msec.2019.04.069] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/02/2019] [Accepted: 04/22/2019] [Indexed: 01/01/2023]
Abstract
Synthetic polymers are attracting great attention in the last decades for their use in the biomedical field as nanovectors for controlled drug delivery, hydrogels and scaffolds enabling cell growth. Among them, polymers able to respond to environmental stimuli have been recently under growing consideration to impart a "smart" behavior to the final product, which is highly desirable to provide it with a specific dynamic and an advanced function. In particular, thermo-responsive polymers, materials able to undergo a discontinuous phase transition or morphological change in response to a temperature variation, are among the most studied. The development of the so-called controlled radical polymerization techniques has paved the way to a high degree of engineering for the polymer architecture and properties, which in turn brought to a plethora of sophisticated behaviors for these polymers by simply switching the external temperature. These can be exploited in many different fields, from separation to advanced optics and biosensors. The aim of this review is to critically discuss the latest advances in the development of thermo-responsive materials for biomedical applications, including a highly controlled drug delivery, mediation of cell growth and bioseparation. The focus is on the structural and design aspects that are required to exploit such materials for cutting-edge applications in the biomedical field.
Collapse
Affiliation(s)
- Mattia Sponchioni
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy; Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
| | - Umberto Capasso Palmiero
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Davide Moscatelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| |
Collapse
|
26
|
Li H, He G, Chen Y, Zhao J, Zhang G. One-Step Approach to Polyester-Polyether Block Copolymers Using Highly Tunable Bicomponent Catalyst. ACS Macro Lett 2019; 8:973-978. [PMID: 35619475 DOI: 10.1021/acsmacrolett.9b00439] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Phthalic anhydride and propylene/ethylene oxide are copolymerized at room temperature by a bicomponent metal-free catalyst comprising a mild phosphazene base and triethylborane. Provided with proper loadings of the two catalytic components, block copolymers with strict (AB)nBm type sequence structures and controlled molar mass (up to 60 kg mol-1) can be generated in one synthetic step, and the block architecture can be enriched by the use of mono-, di-, or tetrahydroxy initiators. The obtained polyester-polyether block copolymers readily undergo microphase-separation in bulk and nanoaggregation in selective (aqueous and alcoholic) solvents.
Collapse
Affiliation(s)
- Heng Li
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Guanchen He
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ye Chen
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Junpeng Zhao
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Guangzhao Zhang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| |
Collapse
|
27
|
Scheiner K, Maas-Bakker RF, Nguyen TT, Duarte AM, Hendriks G, Sequeira L, Duffy GP, Steendam R, Hennink WE, Kok RJ. Sustained Release of Vascular Endothelial Growth Factor from Poly(ε-caprolactone-PEG-ε-caprolactone)- b-Poly(l-lactide) Multiblock Copolymer Microspheres. ACS OMEGA 2019; 4:11481-11492. [PMID: 31460253 PMCID: PMC6681988 DOI: 10.1021/acsomega.9b01272] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/18/2019] [Indexed: 05/14/2023]
Abstract
Vascular endothelial growth factor (VEGF) is the major regulating factor for the formation of new blood vessels, also known as angiogenesis. VEGF is often incorporated in synthetic scaffolds to promote vascularization and to enhance the survival of cells that have been seeded in these devices. Such applications require sustained local delivery of VEGF of around 4 weeks for stable blood vessel formation. Most delivery systems for VEGF only provide short-term release for a couple of days, followed by a release phase with very low VEGF release. We now have developed VEGF-loaded polymeric microspheres that provide sustained release of bioactive VEGF for 4 weeks. Blends of two swellable poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone)-b-poly(l-lactide) ([PCL-PEG-PCL]-b-[PLLA])-based multiblock copolymers with different PEG content and PEG molecular weight were used to prepare the microspheres. Loading of the microspheres was established by a solvent evaporation-based membrane emulsification method. The resulting VEGF-loaded microspheres had average sizes of 40-50 μm and a narrow size distribution. Optimized formulations of a 50:50 blend of the two multiblock copolymers had an average VEGF loading of 0.79 ± 0.09%, representing a high average VEGF loading efficiency of 78 ± 16%. These microspheres released VEGF continuously over 4 weeks in phosphate-buffered saline pH 7.4 at 37 °C. This release profile was preserved after repeated and long-term storage at -20 °C for up to 9 months, thereby demonstrating excellent storage stability. VEGF release was governed by diffusion through the water-filled polymer matrix, depending on PEG molecular weight and PEG content of the polymers. The bioactivity of the released VEGF was retained within the experimental error in the 4-week release window, as demonstrated using a human umbilical vein endothelial cells proliferation assay. Thus, the microspheres prepared in this study are suitable for embedment in polymeric scaffolds with the aim of promoting their functional vascularization.
Collapse
Affiliation(s)
- Karina
C. Scheiner
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Roel F. Maas-Bakker
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Thanh T. Nguyen
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Ana M. Duarte
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Gert Hendriks
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Lídia Sequeira
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Garry P. Duffy
- Discipline
of Anatomy, School of Medicine, National
University of Ireland Galway, University Road, H91 TK33 Galway, Ireland
| | - Rob Steendam
- InnoCore
Pharmaceuticals B.V., L.J. Zielstraweg 1, 9713 GX Groningen, The Netherlands
| | - Wim E. Hennink
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Robbert J. Kok
- Department
of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
- E-mail: . Phone: +31 620275995. Fax: +31 30 251789
| |
Collapse
|
28
|
Temperature-responsive biodegradable injectable polymer systems with conveniently controllable properties. Polym J 2019. [DOI: 10.1038/s41428-019-0217-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
29
|
Chong YK, Zainol I, Ng CH, Ooi IH. Miktoarm star polymers nanocarrier: synthesis, characterisation, and in-vitro drug release study. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1726-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
30
|
Hydrogels with prolonged release of therapeutic antibody: Block junction chemistry modification of ‘ABA’ copolymers provides superior anticancer efficacy. J Control Release 2019; 293:193-200. [DOI: 10.1016/j.jconrel.2018.11.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/08/2018] [Accepted: 11/26/2018] [Indexed: 02/07/2023]
|
31
|
Tamate R, Usui R, Hashimoto K, Kitazawa Y, Kokubo H, Watanabe M. Photo/thermoresponsive ABC triblock copolymer-based ion gels: photoinduced structural transitions. SOFT MATTER 2018; 14:9088-9095. [PMID: 30221301 DOI: 10.1039/c8sm01578c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A photo/thermoresponsive ABC triblock copolymer-based ion gel exhibiting photoinduced structural transitions accompanied by significant rheological changes is newly developed. The ABC triblock copolymer comprises an ionic liquid (IL)-phobic A block, an IL-philic B block, and a photo/thermoresponsive C block containing azobenzene moieties. The IL-phobic A block forms a rigid micellar core in an IL over a wide temperature range and the photo/thermoresponsive C block undergoes upper critical solution temperature (UCST)-type phase transition in ILs. In concentrated polymer solution, the ABC triblock copolymer can form a percolated micellar network at low temperatures through aggregation of A and C blocks as physical crosslinks, bridged by IL-philic B blocks. In contrast, the ion gel undergoes structural transition to jammed micelles at high temperatures due to the disassembly of the thermoresponsive C block, resulting in significant softening of the ion gel. Importantly, the temperature dependences of the viscoelastic properties of the ion gel differ drastically depending on photo-irradiation conditions as the photoinduced isomerization of azobenzene moieties in the C block modulates the affinity between the polymer chain and IL. Utilizing this feature, photoinduced softening/hardening of the ion gel is realized at constant temperature. This study provides a promising strategy to control the rheological properties of nonvolatile soft materials via contactless light irradiation that could be exploited in various applications such as photoresponsive soft actuators and photo-healable soft materials.
Collapse
Affiliation(s)
- Ryota Tamate
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
| | | | | | | | | | | |
Collapse
|
32
|
Murakami T, Kawamori T, Gopez JD, McGrath AJ, Klinger D, Saito K. Synthesis of PEO-based physical gels with tunable viscoelastic properties. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.28992] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takuya Murakami
- Materials Research Laboratory; University of California; Santa Barbara California 93016
- Department of Chemistry, Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8577 Japan
- Yokkaichi Research Center, JSR Corporation; Mie 510-8522 Japan
| | - Takashi Kawamori
- Materials Research Laboratory; University of California; Santa Barbara California 93016
| | - Jeffrey D. Gopez
- Materials Research Laboratory; University of California; Santa Barbara California 93016
| | - Alaina J. McGrath
- Materials Research Laboratory; University of California; Santa Barbara California 93016
| | - Daniel Klinger
- Materials Research Laboratory; University of California; Santa Barbara California 93016
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise Str. 2-4; Berlin 14195 Germany
| | - Kazuya Saito
- Department of Chemistry, Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8577 Japan
| |
Collapse
|
33
|
Penta-block copolymer microspheres: Impact of polymer characteristics and process parameters on protein release. Int J Pharm 2018; 535:428-437. [DOI: 10.1016/j.ijpharm.2017.11.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 12/12/2022]
|
34
|
Barouti G, Jaffredo CG, Guillaume SM. Advances in drug delivery systems based on synthetic poly(hydroxybutyrate) (co)polymers. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2017.05.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
35
|
Gonçalves C, Gomez JP, Même W, Rasolonjatovo B, Gosset D, Nedellec S, Hulin P, Huin C, Le Gall T, Montier T, Lehn P, Pichon C, Guégan P, Cheradame H, Midoux P. Curcumin/poly(2-methyl-2-oxazoline-b-tetrahydrofuran-b-2-methyl-2-oxazoline) formulation: An improved penetration and biological effect of curcumin in F508del-CFTR cell lines. Eur J Pharm Biopharm 2017; 117:168-181. [DOI: 10.1016/j.ejpb.2017.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/14/2017] [Accepted: 04/13/2017] [Indexed: 01/29/2023]
|
36
|
Wang P, Zhuo X, Chu W, Tang X. Exenatide-loaded microsphere/thermosensitive hydrogel long-acting delivery system with high drug bioactivity. Int J Pharm 2017; 528:62-75. [DOI: 10.1016/j.ijpharm.2017.05.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 05/29/2017] [Accepted: 05/29/2017] [Indexed: 12/17/2022]
|
37
|
Kim J, Hwang J, Seo Y, Jo Y, Son J, Choi J. Engineered chitosan–xanthan gum biopolymers effectively adhere to cells and readily release incorporated antiseptic molecules in a sustained manner. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.10.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
38
|
Dashtimoghadam E, Bahlakeh G, Salimi-Kenari H, Hasani-Sadrabadi MM, Mirzadeh H, Nyström B. Rheological Study and Molecular Dynamics Simulation of Biopolymer Blend Thermogels of Tunable Strength. Biomacromolecules 2016; 17:3474-3484. [PMID: 27766854 DOI: 10.1021/acs.biomac.6b00846] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The temperature-induced gelation of chitosan/glycerophosphate (Chs/GP) systems through physical interactions has shown great potential for various biomedical applications. In the present work, hydroxyethyl cellulose (HEC) was added to the thermosensitive Chs/GP solution to improve the mechanical strength and gel properties of the incipient Chs/HEC/GP gel in comparison with the Chs/GP hydrogel at body temperature. The physical features of the macromolecular complexes formed by the synergistic interaction between chitosan and hydroxyethyl cellulose in the presence of β-glycerophosphate disodium salt solution have been studied essentially from a rheological point of view. The temperature and time sweep rheological characterizations of the thermogelling systems revealed that the sol-gel transition temperature of the Chs/HEC/GP blends is equal to 37 °C at neutral pH; with increasing HEC content in the solutions, more compact networks with considerably improved gel strength are formed without influencing the gelation time. The formed hydrogel matrix has enough mechanical integrity and adequate strength for using it as injectable in situ forming matrices for biomedical applications. The classical Winter-Chambon (W-C) and Fredrickson-Larson (F-L) theories were applied to determine the gel point. In view of the obtained results, it is shown that the F-L theory can be employed as a robust and less tedious method than the W-C approach to precisely determine the gel point in these systems. At the end, molecular simulation studies were conducted by using ab initio quantum mechanics (QM) calculations carried out on Chs and HEC models, and molecular dynamics (MD) simulations of solvated Chs/HEC blend systems showed the binding behavior of Chs/HEC polymers. Analyses of interaction energy, radial distribution function, and hydrogen bonding from simulation studies strongly supported the experimental results; they all disclosed that hydrogen-bond formation between Chs moieties with regard to HEC chains plays an important role for the stabilization of the complexes.
Collapse
Affiliation(s)
- Erfan Dashtimoghadam
- Department of Developmental Sciences, Marquette University School of Dentistry , Milwaukee, Wisconsin, United States.,Department of Chemistry, University of Oslo , Oslo, Norway.,Department of Polymer Engineering and Color Technology, Amirkabir University of Technology , Tehran, Iran
| | - Ghasem Bahlakeh
- Department of Engineering and Technology, Golestan University , Aliabad Katool, Iran
| | - Hamed Salimi-Kenari
- Faculty of Engineering and Technology, University of Mazandaran , Babolsar, Iran
| | - Mohammad Mahdi Hasani-Sadrabadi
- Laboratoire de Microsystemes (LMIS4), Institute of Microengineering, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL) , Lausanne, Switzerland.,Parker H. Petit Institute for Bioengineering and Bioscience and G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology , Atlanta, Georgia, United States
| | - Hamid Mirzadeh
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology , Tehran, Iran
| | - Bo Nyström
- Department of Chemistry, University of Oslo , Oslo, Norway
| |
Collapse
|
39
|
Dal Bianco A, Wischke C, Zhou S, Lendlein A. Controlling surface properties and permeability of polyglycerol network films. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3917] [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)
- Andrea Dal Bianco
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies; Helmholtz-Zentrum Geesthacht; Germany
- Institute of Chemistry; University of Potsdam; Germany
| | - Christian Wischke
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies; Helmholtz-Zentrum Geesthacht; Germany
| | - Shuo Zhou
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies; Helmholtz-Zentrum Geesthacht; Germany
- Institute of Chemistry; University of Potsdam; Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies; Helmholtz-Zentrum Geesthacht; Germany
- Institute of Chemistry; University of Potsdam; Germany
| |
Collapse
|
40
|
Xia Y, Chen Y, Song Q, Hu S, Zhao J, Zhang G. Base-to-Base Organocatalytic Approach for One-Pot Construction of Poly(ethylene oxide)-Based Macromolecular Structures. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01542] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yening Xia
- Faculty of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Ye Chen
- Faculty of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Qilei Song
- Faculty of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Shuangyan Hu
- Faculty of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Junpeng Zhao
- Faculty of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Guangzhao Zhang
- Faculty of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| |
Collapse
|
41
|
Oparaji O, Zuo X, Hallinan DT. Crystallite dissolution in PEO-based polymers induced by water sorption. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
42
|
A biocompatible glucose-containing ABC block terpolymer: synthesis, characterization and its properties in solution. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1711-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
43
|
Erlebach A, Ott T, Otzen C, Schubert S, Czaplewska J, Schubert US, Sierka M. Thermodynamic compatibility of actives encapsulated into PEG-PLA nanoparticles: In Silico predictions and experimental verification. J Comput Chem 2016; 37:2220-7. [PMID: 27425625 DOI: 10.1002/jcc.24449] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 06/16/2016] [Accepted: 06/16/2016] [Indexed: 12/15/2022]
Abstract
Achieving optimal solubility of active substances in polymeric carriers is of fundamental importance for a number of industrial applications, including targeted drug delivery within the growing field of nanomedicine. However, its experimental optimization using a trial-and-error approach is cumbersome and time-consuming. Here, an approach based on molecular dynamics (MD) simulations and the Flory-Huggins theory is proposed for rapid prediction of thermodynamic compatibility between active species and copolymers comprising hydrophilic and hydrophobic segments. In contrast to similar methods, our approach offers high computational efficiency by employing MD simulations that avoid explicit consideration of the actual copolymer chains. The accuracy of the method is demonstrated for compatibility predictions between pyrene and nile red as model dyes as well as indomethacin as model drug and copolymers containing blocks of poly(ethylene glycol) and poly(lactic acid) in different ratios. The results of the simulations are directly verified by comparison with the observed encapsulation efficiency of nanoparticles prepared by nanoprecipitation. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Andreas Erlebach
- Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Löbdergraben 32, Jena, 07743, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, Jena, 07743, Germany
| | - Timm Ott
- Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Löbdergraben 32, Jena, 07743, Germany
| | - Christoph Otzen
- Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Löbdergraben 32, Jena, 07743, Germany
| | - Stephanie Schubert
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, Jena, 07743, Germany.,Department of Pharmaceutical Technology, Institute of Pharmacy, Friedrich Schiller University Jena, Otto-Schott-Str. 41, Jena, 07745, Germany
| | - Justyna Czaplewska
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, Jena, 07743, Germany.,Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, Jena, 07743, Germany
| | - Ulrich S Schubert
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, Jena, 07743, Germany.,Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, Jena, 07743, Germany
| | - Marek Sierka
- Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Löbdergraben 32, Jena, 07743, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, Jena, 07743, Germany
| |
Collapse
|
44
|
Zafar N, Agusti G, Fessi H, Elaissari A. Elaboration of sponge-like biodegradable cationic particles via double-emulsion solvent evaporation. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2016.1182923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Nadiah Zafar
- University Lyon-1, UMR 5007, LAGEP-CPE, Villeurbanne, France
| | | | - Hatem Fessi
- University Lyon-1, UMR 5007, LAGEP-CPE, Villeurbanne, France
| | | |
Collapse
|
45
|
Zhao Y, Zhou L, Liu J, Chen Z, Yang L, Shi H. Preparation and investigation of a novel levobupivacaine in situ implant gel for prolonged local anesthetics. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:404-408. [PMID: 26982080 DOI: 10.3109/21691401.2016.1160406] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, levobupivacaine (LBP) was successfully incorporated into implant application based on the concept of in situ gel (PECE). The physicochemical characterization (preparation, phase transition temperature, in vitro release) were investigated. The results of viscosity measurement showed that the preparations behaved like a fluid but formed a rigid gel when exposed to increasing temperature (37 °C). In vitro release, LBP was graduated released from the gels as time lapsed, suggesting that LBP was well entrapped in PECE in situ gels. As is shown in pharmacokinetic parameters, the half-life of LBP injection (2.7 h) was shorter than that of LBP in situ gels (23.9 h), suggesting that LBP injection was taken up by other tissues more rapidly than gels. The area under the curve of LBP in situ gels was 2.18 times the size of that of LBP injection (P< 0.05). In pharmacodynamic test, even after nine hours of injection, gel group could still maintain rather good anesthesia effect and rats' stinging reaction maintained at a relatively low level, which had obvious statistical differences compared to injection group.
Collapse
Affiliation(s)
- Yanjing Zhao
- a Department of Anesthesia , Shanghai Pulmonary Hospital, Tongji University of Medicine , Shanghai , China
| | - Luocheng Zhou
- b Emergency Department , Xin Hua Hospital, Shanghai Jiao Tong University of Medicine , Shanghai , China
| | - Ji Liu
- a Department of Anesthesia , Shanghai Pulmonary Hospital, Tongji University of Medicine , Shanghai , China
| | - Zhigang Chen
- a Department of Anesthesia , Shanghai Pulmonary Hospital, Tongji University of Medicine , Shanghai , China
| | - Lei Yang
- a Department of Anesthesia , Shanghai Pulmonary Hospital, Tongji University of Medicine , Shanghai , China
| | - Hong Shi
- a Department of Anesthesia , Shanghai Pulmonary Hospital, Tongji University of Medicine , Shanghai , China
| |
Collapse
|
46
|
Kamaly N, Yameen B, Wu J, Farokhzad OC. Degradable Controlled-Release Polymers and Polymeric Nanoparticles: Mechanisms of Controlling Drug Release. Chem Rev 2016; 116:2602-63. [PMID: 26854975 PMCID: PMC5509216 DOI: 10.1021/acs.chemrev.5b00346] [Citation(s) in RCA: 1555] [Impact Index Per Article: 194.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nazila Kamaly
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Basit Yameen
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Jun Wu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Omid C. Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
- King Abdulaziz University, Jeddah 21589, Saudi Arabia
| |
Collapse
|
47
|
Polylactic Acid Based Nanocomposites: Promising Safe and Biodegradable Materials in Biomedical Field. INT J POLYM SCI 2016. [DOI: 10.1155/2016/6869154] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Polylactic acid (PLA) is widely used in biological areas due to its excellent compatibility, bioabsorbability, and degradation behavior in human bodies. Pure polylactic acid has difficulty in meeting all the requirements that specific field may demand. Therefore, PLA based nanocomposites are extensively investigated over the past few decades. PLA based nanocomposites include PLA based copolymers in nanometer size and nanocomposites with PLA or PLA copolymers as matrix and nanofillers as annexing agent. The small scale effect and surface effect of nanomaterials help improve the properties of PLA and make PLA based nanocomposites more popular compared with pure PLA materials. This review mainly introduces different kinds of PLA based nanocomposites in recent researches that have great potential to be used in biomedical fields including bone substitute and repair, tissue engineering, and drug delivery system.
Collapse
|
48
|
Liu YS, Huang SJ, Huang XS, Wu YT, Chen HY, Lo YL, Wang LF. The synthesis and comparison of poly(methacrylic acid)–poly(ε-caprolactone) block copolymers with and without symmetrical disulfide linkages in the center for enhanced cellular uptake. RSC Adv 2016. [DOI: 10.1039/c6ra15307k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A self-assembled poly(methacrylic acid)–poly(ε-caprolactone) block copolymer with a disulfide linkage, PMAA-b-PCL-SS-PCL-b-PMAA, was synthesized for enhanced cellular uptake due to a reduction response to GSH and pH-sensitive characteristics.
Collapse
Affiliation(s)
- Yu-Sheng Liu
- Department of Medicinal & Applied Chemistry
- College of Life Science
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Shih-Jer Huang
- Department of Medicinal & Applied Chemistry
- College of Life Science
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Xiao-Shan Huang
- Institute of Medical Science and Technology
- National Sun Yat-Sen University
- Kaohsiung 804
- Taiwan
| | - Yi-Ting Wu
- Department of Medicinal & Applied Chemistry
- College of Life Science
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Hsuan-Ying Chen
- Department of Medicinal & Applied Chemistry
- College of Life Science
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Yu-Lun Lo
- Department of Medicinal & Applied Chemistry
- College of Life Science
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Li-Fang Wang
- Department of Medicinal & Applied Chemistry
- College of Life Science
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| |
Collapse
|
49
|
Star-Like Structure of Oligocarbonate-Fluorene End-Functionalized Poly(ethylene glycol) ABA Triblock Copolymers Below the Gel Point. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/masy.201500076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
50
|
Guo C, Bailey TS. Tailoring mechanical response through coronal layer overlap in tethered micelle hydrogel networks. SOFT MATTER 2015; 11:7345-7355. [PMID: 26271163 DOI: 10.1039/c5sm00122f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Tethered micelle hydrogel networks based on the solution assembly of amphiphilic ABA-type block copolymers are prevalent throughout the hydrogel literature. However, the mechanical response of such systems is often determined largely by the integrity of the micellar core produced during solution assembly, not by the elements of the network structure upon which it is based. Using a solvent-free fabrication method based on the melt-state self-assembly of sphere-forming polystyrene-b-poly(ethylene oxide) (SO) diblock and SOS triblock copolymers blends, we have been able to produce tethered micelle hydrogel networks with fully vitrified cores that enable the elements of the network structure to determine the mechanical response. Here, we explore the impact of using PEO midblocks of different lengths within the SOS tethers, in an effort to elucidate the role played by water content, tether concentration, and tether length in mechanical property determination. In doing so, we were able to establish coronal layer overlap as the primary contributing factor in regulating the dynamic elastic moduli exhibited by tethered micelle systems. Variation of either tether concentration or tether length could be used to tune the degree of coronal layer overlap, enabling direct and accurate control over hydrogel mechanical response. While such control is likely a unique feature of the melt-state fabrication approach applied here, the conclusions with respect to the role of coronal layer overlap and tether (bridging) concentration in determining the mechanical potential of the network should be applicable to all ABA-type tethered micelle systems, regardless of fabrication methodology.
Collapse
Affiliation(s)
- Chen Guo
- Department of Chemical & Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, Colorado 80523, USA.
| | | |
Collapse
|