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Clara-Trujillo S, Tolosa L, Cordón L, Sempere A, Gallego Ferrer G, Gómez Ribelles JL. Novel microgel culture system as semi-solid three-dimensional in vitro model for the study of multiple myeloma proliferation and drug resistance. BIOMATERIALS ADVANCES 2022; 135:212749. [PMID: 35929221 DOI: 10.1016/j.bioadv.2022.212749] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/28/2022] [Accepted: 03/04/2022] [Indexed: 12/28/2022]
Abstract
Multiple myeloma (MM) is a hematological malignancy in which the patient's drug resistance is one of the main clinical problems. As 2D cultures do not recapitulate the cellular microenvironment, which has a key role in drug resistance, there is an urgent need for better biomimetic models. Here, a novel 3D platform is used to model MM. The semi-solid culture consists of a dynamic suspension of microspheres and MM cells, termed as microgel. Microspheres are synthesized with acrylic polymers of different sizes, compositions, and functionalities (fibronectin or hyaluronic acid). Optimal conditions for the platform in terms of agitation speed and microsphere size have been determined. With these parameters the system allows good proliferation of the MM cell lines RPMI8226, U226, and MM1.S. Interestingly, when used for drug resistance studies, culture of the three MM cell lines in microgels showed close agreement in revealing the role of acrylic acid in resistance to anti-MM drugs such as dexamethasone and bortezomib. This work presents a unique platform for the in vitro modeling of non-solid tumors since it allows keeping non-adherent cells in suspension conditions but in a 3D context that can be easily tuned with different functionalizations.
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Affiliation(s)
- Sandra Clara-Trujillo
- Centre for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Valencia 46022, Spain; Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Valencia 46022, Spain.
| | - Laia Tolosa
- Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Valencia 46022, Spain; Experimental Hepatology Unit, Health Research Institute La Fe (IIS La Fe), Valencia 46026, Spain
| | - Lourdes Cordón
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto Carlos III, Madrid, Spain; Hematology Research Group, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Amparo Sempere
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto Carlos III, Madrid, Spain; Hematology Department, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Gloria Gallego Ferrer
- Centre for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Valencia 46022, Spain; Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Valencia 46022, Spain
| | - José Luis Gómez Ribelles
- Centre for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València, Valencia 46022, Spain; Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Valencia 46022, Spain
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Chen PH, Iun CP, Tsai JC, Tang M. Grafting of 2-Hydroxyethyl Methacrylate onto Polyacrylonitrile Using Supercritical Carbon Dioxide. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rashid S, Ward-Bond J, Krupin O, Berini P. Non-specific adsorption of protein to microfluidic materials. Colloids Surf B Biointerfaces 2021; 208:112138. [DOI: 10.1016/j.colsurfb.2021.112138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 11/28/2022]
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Ren J, Kohli N, Sharma V, Shakouri T, Keskin-Erdogan Z, Saifzadeh S, Brierly GI, Knowles JC, Woodruff MA, García-Gareta E. Poly-ε-Caprolactone/Fibrin-Alginate Scaffold: A New Pro-Angiogenic Composite Biomaterial for the Treatment of Bone Defects. Polymers (Basel) 2021; 13:3399. [PMID: 34641215 PMCID: PMC8512525 DOI: 10.3390/polym13193399] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 12/11/2022] Open
Abstract
We hypothesized that a composite of 3D porous melt-electrowritten poly-ɛ-caprolactone (PCL) coated throughout with a porous and slowly biodegradable fibrin/alginate (FA) matrix would accelerate bone repair due to its angiogenic potential. Scanning electron microscopy showed that the open pore structure of the FA matrix was maintained in the PCL/FA composites. Fourier transform infrared spectroscopy and differential scanning calorimetry showed complete coverage of the PCL fibres by FA, and the PCL/FA crystallinity was decreased compared with PCL. In vitro cell work with osteoprogenitor cells showed that they preferentially bound to the FA component and proliferated on all scaffolds over 28 days. A chorioallantoic membrane assay showed more blood vessel infiltration into FA and PCL/FA compared with PCL, and a significantly higher number of bifurcation points for PCL/FA compared with both FA and PCL. Implantation into a rat cranial defect model followed by microcomputed tomography, histology, and immunohistochemistry after 4- and 12-weeks post operation showed fast early bone formation at week 4, with significantly higher bone formation for FA and PCL/FA compared with PCL. However, this phenomenon was not extrapolated to week 12. Therefore, for long-term bone regeneration, tuning of FA degradation to ensure syncing with new bone formation is likely necessary.
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Affiliation(s)
- Jiongyu Ren
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (J.R.); (G.I.B.); (M.A.W.)
| | - Nupur Kohli
- Regenerative Biomaterials Group, The RAFT Institute & The Griffin Institute, Northwick Park & Saint Mark’s Hospital, London HA1 3UJ, UK; (N.K.); (V.S.)
- Department of Mechanical Engineering, Imperial College London, London SW7 1AL, UK
| | - Vaibhav Sharma
- Regenerative Biomaterials Group, The RAFT Institute & The Griffin Institute, Northwick Park & Saint Mark’s Hospital, London HA1 3UJ, UK; (N.K.); (V.S.)
| | - Taleen Shakouri
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
| | - Zalike Keskin-Erdogan
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
| | - Siamak Saifzadeh
- Medical Engineering Research Facility, Queensland University of Technology, Brisbane, QLD 4059, Australia;
| | - Gary I. Brierly
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (J.R.); (G.I.B.); (M.A.W.)
| | - Jonathan C. Knowles
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan 31116, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan 31116, Korea
| | - Maria A. Woodruff
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (J.R.); (G.I.B.); (M.A.W.)
| | - Elena García-Gareta
- Regenerative Biomaterials Group, The RAFT Institute & The Griffin Institute, Northwick Park & Saint Mark’s Hospital, London HA1 3UJ, UK; (N.K.); (V.S.)
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
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Chroni A, Mavromoustakos T, Pispas S. Nano-Assemblies from Amphiphilic PnBA-b-POEGA Copolymers as Drug Nanocarriers. Polymers (Basel) 2021; 13:polym13071164. [PMID: 33916421 PMCID: PMC8038588 DOI: 10.3390/polym13071164] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 03/31/2021] [Accepted: 03/31/2021] [Indexed: 12/26/2022] Open
Abstract
The focus of this study is the development of highly stable losartan potassium (LSR) polymeric nanocarriers. Two novel amphiphilic poly(n-butyl acrylate)-block-poly(oligo(ethylene glycol) methyl ether acrylate) (PnBA-b-POEGA) copolymers with different molecular weight (Mw) of PnBA are synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization, followed by the encapsulation of LSR into both PnBA-b-POEGA micelles. Based on dynamic light scattering (DLS), the PnBA30-b-POEGA70 and PnBA27-b-POEGA73 (where the subscripts denote wt.% composition of the components) copolymers formed micelles of 10 nm and 24 nm in water. The LSR-loaded PnBA-b-POEGA nanocarriers presented increased size and greater mass nanostructures compared to empty micelles, implying the successful loading of LSR into the inner hydrophobic domains. A thorough NMR (nuclear magnetic resonance) characterization of the LSR-loaded PnBA-b-POEGA nanocarriers was conducted. Strong intermolecular interactions between the biphenyl ring and the butyl chain of LSR with the methylene signals of PnBA were evidenced by 2D-NOESY experiments. The highest hydrophobicity of the PnBA27-b-POEGA73 micelles contributed to an efficient encapsulation of LSR into the micelles exhibiting a greater value of %EE compared to PnBA30-b-POEGA70 + 50% LSR nanocarriers. Ultrasound release profiles of LSR signified that a great amount of the encapsulated LSR is strongly attached to both PnBA30-b-POEGA70 and PnBA27-b-POEGA73 micelles.
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Affiliation(s)
- Angeliki Chroni
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece;
| | - Thomas Mavromoustakos
- Department of Chemistry, National and Kapodistrian University of Athens, Panepistimioupolis, 15771 Zografou, Greece;
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece;
- Correspondence: ; Tel.: +30-210-727-3824
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Sharma V, Kohli N, Moulding D, Afolabi H, Hook L, Mason C, García-Gareta E. Design of a Novel Two-Component Hybrid Dermal Scaffold for the Treatment of Pressure Sores. Macromol Biosci 2017; 17. [PMID: 28895290 DOI: 10.1002/mabi.201700185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/31/2017] [Indexed: 12/16/2022]
Abstract
The aim of this study is to design a novel two-component hybrid scaffold using the fibrin/alginate porous hydrogel Smart Matrix combined to a backing layer of plasma polymerized polydimethylsiloxane (Sil) membrane to make the fibrin-based dermal scaffold more robust for the treatment of the clinically challenging pressure sores. A design criteria are established, according to which the Sil membranes are punched to avoid collection of fluid underneath. Manual peel test shows that native silicone does not attach to the fibrin/alginate component while the plasma polymerized silicone membranes are firmly bound to fibrin/alginate. Structural characterization shows that the fibrin/alginate matrix is intact after the addition of the Sil membrane. By adding a Sil membrane to the original fibrin/alginate scaffold, the resulting two-component scaffolds have a significantly higher shear or storage modulus G'. In vitro cell studies show that dermal fibroblasts remain viable, proliferate, and infiltrate the two-component hybrid scaffolds during the culture period. These results show that the design of a novel two-component hybrid dermal scaffold is successful according to the proposed design criteria. To the best of the authors' knowledge, this is the first study that reports the combination of a fibrin-based scaffold with a plasma-polymerized silicone membrane.
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Affiliation(s)
- Vaibhav Sharma
- Regenerative Biomaterials Group, RAFT Institute of Plastic Surgery, Mount Vernon Hospital, Northwood, HA6 2RN, UK.,Department of Biochemical Engineering, University College London, Gower Street, London, WC1E 6BT, UK
| | - Nupur Kohli
- Regenerative Biomaterials Group, RAFT Institute of Plastic Surgery, Mount Vernon Hospital, Northwood, HA6 2RN, UK
| | - Dale Moulding
- Institute of Child Health, University College London, UCL Great Ormond Street, 30 Guilford Street, London, WC1N 1EH, UK
| | - Halimat Afolabi
- Regenerative Biomaterials Group, RAFT Institute of Plastic Surgery, Mount Vernon Hospital, Northwood, HA6 2RN, UK
| | - Lilian Hook
- Regenerative Biomaterials Group, RAFT Institute of Plastic Surgery, Mount Vernon Hospital, Northwood, HA6 2RN, UK
| | - Chris Mason
- Department of Biochemical Engineering, University College London, Gower Street, London, WC1E 6BT, UK
| | - Elena García-Gareta
- Regenerative Biomaterials Group, RAFT Institute of Plastic Surgery, Mount Vernon Hospital, Northwood, HA6 2RN, UK
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Sharma V, Patel N, Kohli N, Ravindran N, Hook L, Mason C, García-Gareta E. Viscoelastic, physical, and bio-degradable properties of dermal scaffolds and related cell behaviour. ACTA ACUST UNITED AC 2016; 11:055001. [PMID: 27586397 DOI: 10.1088/1748-6041/11/5/055001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Dermal scaffolds promote healing of debilitating skin injuries caused by burns and chronic skin conditions. Currently available products present disadvantages and therefore, there is still a clinical need for developing new dermal substitutes. This study aimed at comparing the viscoelastic, physical and bio-degradable properties of two dermal scaffolds, the collagen-based and clinically well established Integra(®) and a novel fibrin-based dermal scaffold developed at our laboratory called Smart Matrix(®), to further evaluate our previous published findings that suggested a higher influx of cells, reduced wound contraction and less scarring for Smart Matrix(®) when used in vivo. Rheological results showed that Integra(®) (G' = 313.74 kPa) is mechanically stronger than Smart Matrix(®) (G' = 8.26 kPa), due to the presence of the silicone backing layer in Integra(®). Micro-pores were observed on both dermal scaffolds, although nano-pores as well as densely packed nano-fibres were only observed for Smart Matrix(®). Average surface roughness was higher for Smart Matrix(®) (Sa = 114.776 nm) than for Integra(®) (Sa = 75.565 nm). Both scaffolds possess a highly porous structure (80-90%) and display a range of pore micro-sizes that represent the actual in vivo scenario. In vitro proteolytic bio-degradation suggested that Smart Matrix(®) would degrade faster upon implantation in vivo than Integra(®). For both scaffolds, the enzymatic digestion occurs via bulk degradation. These observed differences could affect cell behaviour on both scaffolds. Our results suggest that fine-tuning of scaffolds' viscoelastic, physical and bio-degradable properties can maximise cell behaviour in terms of attachment, proliferation and infiltration, which are essential for tissue repair.
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Affiliation(s)
- Vaibhav Sharma
- RAFT Institute of Plastic Surgery, Mount Vernon Hospital, Northwood, HA6 2RN, UK. Department of Biochemical Engineering, University College London, Gower Street, London, WC1E 6BT, UK
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