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Moya-Lopez C, González-Fuentes J, Bravo I, Chapron D, Bourson P, Alonso-Moreno C, Hermida-Merino D. Polylactide Perspectives in Biomedicine: From Novel Synthesis to the Application Performance. Pharmaceutics 2022; 14:pharmaceutics14081673. [PMID: 36015299 PMCID: PMC9415503 DOI: 10.3390/pharmaceutics14081673] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/24/2022] Open
Abstract
The incessant developments in the pharmaceutical and biomedical fields, particularly, customised solutions for specific diseases with targeted therapeutic treatments, require the design of multicomponent materials with multifunctional capabilities. Biodegradable polymers offer a variety of tailored physicochemical properties minimising health adverse side effects at a low price and weight, which are ideal to design matrices for hybrid materials. PLAs emerge as an ideal candidate to develop novel materials as are endowed withcombined ambivalent performance parameters. The state-of-the-art of use of PLA-based materials aimed at pharmaceutical and biomedical applications is reviewed, with an emphasis on the correlation between the synthesis and the processing conditions that define the nanostructure generated, with the final performance studies typically conducted with either therapeutic agents by in vitro and/or in vivo experiments or biomedical devices.
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Affiliation(s)
- Carmen Moya-Lopez
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Joaquín González-Fuentes
- Centro Regional de Investigaciones Biomédicas (CRIB), 02008 Albacete, Spain
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
| | - Iván Bravo
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
- Unidad NanoCRIB, Centro Regional de Investigaciones Biomédicas, 02008 Albacete, Spain
| | - David Chapron
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Patrice Bourson
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Carlos Alonso-Moreno
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
- Unidad NanoCRIB, Centro Regional de Investigaciones Biomédicas, 02008 Albacete, Spain
| | - Daniel Hermida-Merino
- DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
- Departamento de Física Aplicada, CINBIO, Lagoas-Marcosende Campus, Universidade de Vigo, 36310 Vigo, Spain
- Correspondence: ; Tel.: +33-(0)476882375
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2
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Wang Z, Zhao Y, Shen M, Tomás H, Zhou B, Shi X. Antitumor Efficacy of Doxorubicin-Loaded Electrospun Attapulgite–Poly(lactic-co-glycolic acid) Composite Nanofibers. J Funct Biomater 2022; 13:jfb13020055. [PMID: 35645263 PMCID: PMC9149849 DOI: 10.3390/jfb13020055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/21/2022] [Accepted: 05/09/2022] [Indexed: 02/06/2023] Open
Abstract
Currently, cancer chemotherapeutic drugs still have the defects of high toxicity and low bioavailability, so it is critical to design novel drug release systems for cancer chemotherapy. Here, we report a method to fabricate electrospun drug-loaded organic/inorganic hybrid nanofibrous system for antitumor therapy applications. In this work, rod-like attapulgite (ATT) was utilized to load a model anticancer drug doxorubicin (DOX), and mixed with poly(lactic-co-glycolic acid) (PLGA) to form electrospun hybrid nanofibers. The ATT/DOX/PLGA composite nanofibers were characterized through various techniques. It is feasible to load DOX onto ATT surfaces, and the ATT/DOX/PLGA nanofibers show a smooth and uniform morphology with improved mechanical durability. Under neutral and acidic pH conditions, the loaded DOX was released from ATT/DOX/PLGA nanofibers in a sustained manner. In addition, the released DOX from the nanofibers could significantly inhibit the growth of tumor cells. Owing to the significantly reduced burst release profile and increased mechanical durability of the ATT/DOX/PLGA nanofibers, the designed organic–inorganic hybrid nanofibers may hold great promise as a nanoplatform to encapsulate different drugs for enhanced local tumor therapy applications.
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Affiliation(s)
- Zhe Wang
- Department of Biomedical Engineering, College of Engineering, Shantou University, Shantou 515063, China;
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China;
| | - Yili Zhao
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China;
| | - Mingwu Shen
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China;
| | - Helena Tomás
- CQM—Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal;
| | - Benqing Zhou
- Department of Biomedical Engineering, College of Engineering, Shantou University, Shantou 515063, China;
- Correspondence: (B.Z.); (X.S.)
| | - Xiangyang Shi
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China;
- CQM—Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal;
- Correspondence: (B.Z.); (X.S.)
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3
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Wang C, Ma Z, Yuan K, Ji T. Using scaffolds as drug delivery systems to treat bone tumor. NANOTECHNOLOGY 2022; 33:212002. [PMID: 35092950 DOI: 10.1088/1361-6528/ac5017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Surgery is the principal strategy to treat osteosarcoma and other types of bone tumors, but it causes bone defects that cannot be healed spontaneously. After surgery, patients still need to receive radiotherapy and/or chemotherapy to prevent tumor recurrence and metastasis, which leads to systemic side effects. Bone scaffolds exhibit the potentials to load cargos (drugs or growth factors) and act as drug delivery systems (DDSs) in the osteosarcoma postoperative treatment. This review introduces current types of bone scaffolds and highlights representative works using scaffolds as DDSs to treat osteosarcomas. Challenges and perspectives in the scaffold-based DDSs are also discussed. This review may provide references to develop effective and safe strategies for osteosarcoma postoperative treatment.
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Affiliation(s)
- Caifeng Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zijiu Ma
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Kemeng Yuan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Tianjiao Ji
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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4
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Nogueira LFB, Maniglia BC, Buchet R, Millán JL, Ciancaglini P, Bottini M, Ramos AP. Three-dimensional cell-laden collagen scaffolds: From biochemistry to bone bioengineering. J Biomed Mater Res B Appl Biomater 2021; 110:967-983. [PMID: 34793621 DOI: 10.1002/jbm.b.34967] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 09/05/2021] [Accepted: 10/30/2021] [Indexed: 12/22/2022]
Abstract
The bones can be viewed as both an organ and a material. As an organ, the bones give structure to the body, facilitate skeletal movement, and provide protection to internal organs. As a material, the bones consist of a hybrid organic/inorganic three-dimensional (3D) matrix, composed mainly of collagen, noncollagenous proteins, and a calcium phosphate mineral phase, which is formed and regulated by the orchestrated action of a complex array of cells including chondrocytes, osteoblasts, osteocytes, and osteoclasts. The interactions between cells, proteins, and minerals are essential for the bone functions under physiological loading conditions, trauma, and fractures. The organization of the bone's organic and inorganic phases stands out for its mechanical and biological properties and has inspired materials research. The objective of this review is to fill the gaps between the physical and biological characteristics that must be achieved to fabricate scaffolds for bone tissue engineering with enhanced performance. We describe the organization of bone tissue highlighting the characteristics that have inspired the development of 3D cell-laden collagenous scaffolds aimed at replicating the mechanical and biological properties of bone after implantation. The role of noncollagenous macromolecules in the organization of the collagenous matrix and mineralization ability of entrapped cells has also been reviewed. Understanding the modulation of cell activity by the extracellular matrix will ultimately help to improve the biological performance of 3D cell-laden collagenous scaffolds used for bone regeneration and repair as well as for in vitro studies aimed at unravelling physiological and pathological processes occurring in the bone.
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Affiliation(s)
- Lucas Fabricio Bahia Nogueira
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil.,Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Bianca C Maniglia
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil
| | - Rene Buchet
- Institute for Molecular and Supramolecular Chemistry and Biochemistry, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - José Luis Millán
- Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Pietro Ciancaglini
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil
| | - Massimo Bottini
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy.,Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Ana Paula Ramos
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil
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5
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Wang W, Chen JX, Hou Y, Bartolo P, Chiang WH. Investigations of Graphene and Nitrogen-Doped Graphene Enhanced Polycaprolactone 3D Scaffolds for Bone Tissue Engineering. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:929. [PMID: 33917418 PMCID: PMC8067503 DOI: 10.3390/nano11040929] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/31/2021] [Accepted: 04/05/2021] [Indexed: 12/23/2022]
Abstract
Scaffolds play a key role in tissue engineering applications. In the case of bone tissue engineering, scaffolds are expected to provide both sufficient mechanical properties to withstand the physiological loads, and appropriate bioactivity to stimulate cell growth. In order to further enhance cell-cell signaling and cell-material interaction, electro-active scaffolds have been developed based on the use of electrically conductive biomaterials or blending electrically conductive fillers to non-conductive biomaterials. Graphene has been widely used as functioning filler for the fabrication of electro-active bone tissue engineering scaffolds, due to its high electrical conductivity and potential to enhance both mechanical and biological properties. Nitrogen-doped graphene, a unique form of graphene-derived nanomaterials, presents significantly higher electrical conductivity than pristine graphene, and better surface hydrophilicity while maintaining a similar mechanical property. This paper investigates the synthesis and use of high-performance nitrogen-doped graphene as a functional filler of poly(ɛ-caprolactone) (PCL) scaffolds enabling to develop the next generation of electro-active scaffolds. Compared to PCL scaffolds and PCL/graphene scaffolds, these novel scaffolds present improved in vitro biological performance.
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Affiliation(s)
- Weiguang Wang
- Department of Mechanical, Aerospace and Civil Engineering, School of Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK; (Y.H.); (P.B.)
| | - Jun-Xiang Chen
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei E2-514, Taiwan;
| | - Yanhao Hou
- Department of Mechanical, Aerospace and Civil Engineering, School of Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK; (Y.H.); (P.B.)
| | - Paulo Bartolo
- Department of Mechanical, Aerospace and Civil Engineering, School of Engineering, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK; (Y.H.); (P.B.)
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei E2-514, Taiwan;
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6
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Zargar Kharazi A, Fathi MH, Manshaei M, Razavi SM. In-vivo evaluation of a partially resorbable poly l-lactic acid/ braided bioactive glass fibers reinforced composite for load bearing fracture fixation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:57. [PMID: 32596771 DOI: 10.1007/s10856-020-06394-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Our previous studies have been focused on the design, optimization and manufacture of a partially resorbable composite bone plate consisting of a poly l-lactic acid matrix reinforced with braided fabrics bioactive glass fibers (PLLA/BG). In the present study, the response of the composite samples, the degradation rate, the inflammatory response, fibrous capsule formation and tissue-implant bonding to the in-vivo environment were assessed via implantation in the rabbit subcutaneous tissue. Despite the presence of both enzymatic degradation and hydrolysis processes within the body, the rate of the molecular weight loss as an indicator of degradation did not show a significant difference with the in-vitro conditions. It was predicted that strength loss would show the same trend since it was a consequence of molecular chain disruption and the loss of molecular weight. Inexistence of chronic inflammation, as confirmed by our previous results on the controlled degradation rate, also showed the maintenance of the physiological pH in the peripheral environment of the implant. Moreover, lack of the fibrous capsule tissue around the implant indicated that the implant was bioactive. In addition, given the composition of the bioactive glass fibers, that could be bonded to soft and hard tissues, tissue bonding with the PLLA/BG composite samples was also observed, thereby confirming the bioactivity and biocompatibility of the proposed bone plate.
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Affiliation(s)
- Anousheh Zargar Kharazi
- Biomaterials Nanotechnology and Tissue Engineering faculty, School of Advanced Medical Technology, Isfahan University of Medical Sciences, Isfahan, 8174673461, Iran.
| | - Mohammad Hossein Fathi
- Biomaterials Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Maziar Manshaei
- School of Dentistry, Isfahan UnIversity of Medical Sciences, Isfahan, Iran
- Department of Surgery, Islamic Azade University Shahrekord Branch, sharekord, Iran
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7
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Ziemba AM, Lane KP, Balouch B, D'Amato AR, Totsingan F, Gross RA, Gilbert RJ. Lactonic Sophorolipid Increases Surface Wettability of Poly-l-lactic Acid Electrospun Fibers. ACS APPLIED BIO MATERIALS 2019; 2:3153-3158. [PMID: 35030759 DOI: 10.1021/acsabm.9b00268] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The hydrophobicity of electrospun poly-l-lactic acid (PLLA) fibers hinders their integration with surrounding tissue for a variety of applications. In this study, we increased PLLA fiber hydrophilicity by incorporating the natural surfactant, lactonic sophorolipid (LSL). PLLA+LSL fibers had similar fiber morphology but significantly greater surface wettability, which suggested LSL accumulation on the fiber surface. Differential scanning calorimetry results also suggested that LSL was phase separated from PLLA. Despite the altered surface wettability of these fibers, there was no change in fibroblast adhesion. Future studies may explore the use of this natural surfactant to deliver bioactive factors to enhance fibroblast adhesion.
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Affiliation(s)
- Alexis M Ziemba
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 Fifteenth Street, Troy, New York 12180, United States
| | - Keith P Lane
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 Fifteenth Street, Troy, New York 12180, United States
| | - Bailey Balouch
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 Fifteenth Street, Troy, New York 12180, United States
| | - Anthony R D'Amato
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 Fifteenth Street, Troy, New York 12180, United States
| | | | - Richard A Gross
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 Fifteenth Street, Troy, New York 12180, United States
| | - Ryan J Gilbert
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 1623 Fifteenth Street, Troy, New York 12180, United States
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8
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Lee CC, Hirasawa N, Garcia KG, Ramanathan D, Kim KD. Stem and progenitor cell microenvironment for bone regeneration and repair. Regen Med 2019; 14:693-702. [PMID: 31393221 DOI: 10.2217/rme-2018-0044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Stem cells reside in their native microenvironment, which provides dynamic physical and chemical cues essential to their survival, proliferation and function. A typical cell-based therapeutic approach requires the mesenchymal stem cells (MSC) to depart their native microenvironment, transplant to in-vivo environment, differentiate toward multiple lineages and participate in bone formation. The long-term survival, function and fate of MSC are dependent on the microenvironment in which they are transplanted. Transplantation of morselized autologous bone, which contains both stem cells and their native microenvironment, results in a good clinical outcome. However, implantation of bone graft substitutes does not provide the complete and dynamic microenvironment for MSC. Current bone graft therapeutics may need to be improved further to provide an optimal engineered MSC microenvironment.
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Affiliation(s)
- Charles C Lee
- Department of Cell Biology & Human Anatomy, School of Medicine, University of California, Davis, CA, USA
| | | | | | - Dinesh Ramanathan
- Department of Neurological Surgery, School of Medicine, University of California, Davis, CA, USA
| | - Kee D Kim
- Department of Neurological Surgery, School of Medicine, University of California, Davis, CA, USA
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9
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Liao SC, Chen KS, Chien JL, Chen SC, Lin WL. Acetic-Acid Plasma-Polymerization on Polymeric Substrates for Biomedical Application. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E941. [PMID: 31261794 PMCID: PMC6669696 DOI: 10.3390/nano9070941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/22/2019] [Accepted: 06/24/2019] [Indexed: 12/14/2022]
Abstract
: Cold plasma is an emerging technology offering many potential applications for regenerative medicine or tissue engineering. This study focused on the characterization of the carboxylic acid functional groups deposited on polymeric substrates using a plasma polymerization process with an acetic acid precursor. The acetic acid precursor contains oxygen and hydrocarbon that, when introduced to a plasma state, forms the polylactide-like film on the substrates. In this study, polymeric substrates were modified by depositing acetic acid plasma film on the surface to improve hydrophilic quality and biocompatibility. The experimental results that of electron spectroscopy for chemical analysis (ESCA) to show for acetic acid film, three peaks corresponding to the C-C group (285.0 eV), C-O group (286.6 eV), and C=O group (288.7 eV) were observed. The resulting of those indicated that appropriate acetic acid plasma treatment could increase the polar components on the surface of substrates to improve the hydrophilicity. In addition, in vitro cell culture studies showed that the embryonic stem (ES) cell adhesion on the acetic acid plasma-treated polymeric substrates is better than the untreated. Such acetic acid film performance makes it become a promising candidate as the surface coating layer on polymeric substrates for biomedical application.
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Affiliation(s)
- Shu-Chuan Liao
- Institute of Biomedical Engineering, National Taiwan University, Taipei 106, Taiwan.
- Bachelor Program for Design and Materials for Medical Equipment and Devices, Da Yeh University, Changhua 515, Taiwan.
| | - Ko-Shao Chen
- Department of Materials Engineering, Tatung University, Taipei 104, Taiwan.
| | - Jui-Lung Chien
- Department of Materials Engineering, Tatung University, Taipei 104, Taiwan.
| | - Su-Chen Chen
- Department of Raw Materials and Yarns, Taiwan Textile Research Institute, New Taipei City 236, Taiwan.
| | - Win-Li Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei 106, Taiwan.
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10
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Leach DG, Young S, Hartgerink JD. Advances in immunotherapy delivery from implantable and injectable biomaterials. Acta Biomater 2019; 88:15-31. [PMID: 30771535 PMCID: PMC6632081 DOI: 10.1016/j.actbio.2019.02.016] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/10/2019] [Accepted: 02/12/2019] [Indexed: 02/07/2023]
Abstract
Macroscale biomaterials, such as preformed implantable scaffolds and injectable soft materials, possess powerful synergies with anti-cancer immunotherapies. Immunotherapies on their own typically have poor delivery properties, and often require repeated high-dose injections that result in serious off-tumor effects and/or limited efficacy. Rationally designed biomaterials allow for discrete localization and controlled release of immunotherapeutic agents, and have been shown in a large number of applications to improve outcomes in the treatment of cancers via immunotherapy. Among various strategies, macroscale biomaterial delivery systems can take the form of robust tablet-like scaffolds that are surgically implanted into a tumor resection site, releasing programmed immune cells or immunoregulatory agents. Alternatively they can be developed as soft gel-like materials that are injected into solid tumors or sites of resection to stimulate a potent anti-tumor immune response. Biomaterials synthesized from diverse components such as polymers and peptides can be combined with any immunotherapy in the modern toolbox, from checkpoint inhibitors and stimulatory adjuvants, to cancer antigens and adoptive T cells, resulting in unique synergies and improved therapeutic efficacy. The field is growing rapidly in size as publications continue to appear in the literature, and biomaterial-based immunotherapies are entering clinical trials and human patients. It is unarguably an exciting time for cancer immunotherapy and biomaterial researchers, and further work seeks to understand the most critical design considerations in the development of the next-generation of immunotherapeutic biomaterials. This review will discuss recent advances in the delivery of immunotherapies from localized biomaterials, focusing on macroscale implantable and injectable systems. STATEMENT OF SIGNIFICANCE: Anti-cancer immunotherapies have shown exciting clinical results in the past few decades, yet they suffer from a few distinct limitations, such as poor delivery kinetics, narrow patient response profiles, and systemic side effects. Biomaterial systems are now being developed that can overcome many of these problems, allowing for localized adjuvant delivery, focused dose concentrations, and extended therapy presentation. The field of biocompatible carrier materials is uniquely suited to be combined with immunotherapy, promising to yield significant improvements in treatment outcomes and clinical care. In this review, the first pioneering efforts and most recent advances in biomaterials for immunotherapeutic applications are explored, with a specific focus on implantable and injectable biomaterials such as porous scaffolds, cryogels, and hydrogels.
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Affiliation(s)
- David G Leach
- Department of Chemistry, Department of Bioengineering, Rice University, Houston, TX 77005, United States
| | - Simon Young
- Department of Oral & Maxillofacial Surgery, University of Texas Health Science Center, Houston, TX 77054, United States
| | - Jeffrey D Hartgerink
- Department of Chemistry, Department of Bioengineering, Rice University, Houston, TX 77005, United States.
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11
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The Rigid-Shield Technique: A New Contour and Clot Stabilizing Method for Ridge Preservation. Dent J (Basel) 2018; 6:dj6020021. [PMID: 29914186 PMCID: PMC6023458 DOI: 10.3390/dj6020021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/12/2018] [Accepted: 06/15/2018] [Indexed: 11/16/2022] Open
Abstract
Tooth extraction causes vertical and horizontal alveolar bone loss and consequent remodeling. Several methods have been introduced in terms of so-called “ridge preservation” techniques, which mostly resemble guided bone regenerative (GBR) procedures using filler materials and membranes in order to stabilize the respective sites. This conceptual case report describes a novel approach using a degradable polylactic acid membrane covered with a collagen matrix, which aims to reshape the resorbed alveolar wall and thereby to stabilize the soft tissues during matrix formation and socket mineralization. Clinical re-entry, radiographic (CBCT) and histologic evaluation proved adequate for osteoneogenesis despite an unfavorable initial situation: An implant could be ideally placed, which was circumferentially covered by bone. This minimally invasive method could offer a new method to approach socket preservation without using filler materials and coverage of the socket entrance. However, more controlled research on this topic is needed.
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12
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Cvikl B, Hess SC, Miron RJ, Agis H, Bosshardt D, Attin T, Schmidlin PR, Lussi A. Response of human dental pulp cells to a silver-containing PLGA/TCP-nanofabric as a potential antibacterial regenerative pulp-capping material. BMC Oral Health 2017; 17:57. [PMID: 28241819 PMCID: PMC5327548 DOI: 10.1186/s12903-017-0348-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 02/14/2017] [Indexed: 12/11/2022] Open
Abstract
Background Damage or exposure of the dental pulp requires immediate therapeutic intervention. Methods This study assessed the biocompatibility of a silver-containing PLGA/TCP-nanofabric scaffold (PLGA/Ag-TCP) in two in vitro models, i.e. the material adapted on pre-cultured cells and cells directly cultured on the material, respectively. Collagen saffolds with and without hyaluronan acid (Coll-HA; Coll) using both cell culturing methods and cells growing on culture plates served as reference. Cell viability and proliferation were assessed after 24, 48, and 72 h based on formazan formation and BrdU incorporation. Scaffolds were harvested. Gene expression of interleukin(IL)-6, tumor necrosis factor (TNF)-alpha, and alkaline phosphatase (AP) was assessed 24 h after stimulation. Results In both models formazan formation and BrdU incorporation was reduced by PLGA/Ag-TCP on dental pulp cells, while no significant reduction was found in cells with Coll and Coll-HA. Cells with PLGA/Ag-TCP for 72 h showed similar relative BrdU incorporation than cells stimulated with Coll and Coll-HA. A prominent increase in the pro-inflammatory genes IL-6 and TNF-α was observed when cells were cultured with PLGA/Ag-TCP compared to the other groups. This increase was parallel with a slight increase in AP expression. Overall, no differences between the two culture methods were observed. Conclusions PLGA/Ag-TCP decreased viability and proliferation rate of human dental pulp cells and increased the pro-inflammatory capacity and alkaline phosphatase expression. Whether these cellular responses observed in vitro translate into pulp regeneration in vivo will be assessed in further studies.
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Affiliation(s)
- Barbara Cvikl
- Department of Preventive, Restorative and Pediatric Dentistry, School of Dentistry, University of Bern, Bern, Switzerland.,Department of Conservative Dentistry & Periodontology, Medical University of Vienna, Vienna, Austria
| | - Samuel C Hess
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Richard J Miron
- Department of Preventive, Restorative and Pediatric Dentistry, School of Dentistry, University of Bern, Bern, Switzerland.,Department of Periodontology, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, Florida, USA
| | - Hermann Agis
- Department of Conservative Dentistry & Periodontology, Medical University of Vienna, Vienna, Austria
| | - Dieter Bosshardt
- Robert K. Schenk Laboratory of Oral Histology, Department of Periodontology, Department of Oral Surgery and Stomatology, University of Bern, Bern, Switzerland
| | - Thomas Attin
- Clinic of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, Plattenstrasse 11, Zurich, CH-8032, Switzerland
| | - Patrick R Schmidlin
- Department of Preventive, Restorative and Pediatric Dentistry, School of Dentistry, University of Bern, Bern, Switzerland. .,Clinic of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, Plattenstrasse 11, Zurich, CH-8032, Switzerland.
| | - Adrian Lussi
- Department of Preventive, Restorative and Pediatric Dentistry, School of Dentistry, University of Bern, Bern, Switzerland
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13
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Liu C, Shen J, Yeung KWK, Tjong SC. Development and Antibacterial Performance of Novel Polylactic Acid-Graphene Oxide-Silver Nanoparticle Hybrid Nanocomposite Mats Prepared By Electrospinning. ACS Biomater Sci Eng 2017; 3:471-486. [DOI: 10.1021/acsbiomaterials.6b00766] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Chen Liu
- Department
of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong
| | - Jie Shen
- Department
of Orthopedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Kelvin Wai Kwok Yeung
- Department
of Orthopedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Sie Chin Tjong
- Department
of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong
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14
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Hardy JG, Torres-Rendon JG, Leal-Egaña A, Walther A, Schlaad H, Cölfen H, Scheibel TR. Biomineralization of Engineered Spider Silk Protein-Based Composite Materials for Bone Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E560. [PMID: 28773681 PMCID: PMC5456849 DOI: 10.3390/ma9070560] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/06/2016] [Accepted: 06/24/2016] [Indexed: 01/26/2023]
Abstract
Materials based on biodegradable polyesters, such as poly(butylene terephthalate) (PBT) or poly(butylene terephthalate-co-poly(alkylene glycol) terephthalate) (PBTAT), have potential application as pro-regenerative scaffolds for bone tissue engineering. Herein, the preparation of films composed of PBT or PBTAT and an engineered spider silk protein, (eADF4(C16)), that displays multiple carboxylic acid moieties capable of binding calcium ions and facilitating their biomineralization with calcium carbonate or calcium phosphate is reported. Human mesenchymal stem cells cultured on films mineralized with calcium phosphate show enhanced levels of alkaline phosphatase activity suggesting that such composites have potential use for bone tissue engineering.
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Affiliation(s)
- John G Hardy
- Lehrstuhl Biomaterialien, Universität Bayreuth, Universitätsstraße 30, Bayreuth 95447, Germany.
| | | | - Aldo Leal-Egaña
- Lehrstuhl Biomaterialien, Universität Bayreuth, Universitätsstraße 30, Bayreuth 95447, Germany.
| | - Andreas Walther
- DWI Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, Aachen 52056, Germany.
| | - Helmut Schlaad
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, Potsdam 14476, Germany.
| | - Helmut Cölfen
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstr. 10, Konstanz D-78457, Germany.
| | - Thomas R Scheibel
- Lehrstuhl Biomaterialien, Universität Bayreuth, Universitätsstraße 30, Bayreuth 95447, Germany.
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15
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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.
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