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Antczak LAM, Moore KN, Hendrick TE, Heise RL. Binary Fabrication of Decellularized Lung Extracellular Matrix Hybridgels for in vitro Chronic Obstructive Pulmonary Disease Modeling. Acta Biomater 2024:S1742-7061(24)00389-1. [PMID: 39059731 DOI: 10.1016/j.actbio.2024.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 07/09/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024]
Abstract
Limited treatments and a lack of appropriate animal models have spurred the study of scaffolds to mimic lung disease in vitro. Decellularized human lung and its application in extracellular matrix (ECM) hydrogels has advanced the development of these lung ECM models. Controlling the biochemical and mechanical properties of decellularized ECM hydrogels continues to be of interest due to inherent discrepancies of hydrogels when compared to their source tissue. To optimize the physiologic relevance of ECM hydrogel lung models without sacrificing the native composition we engineered a binary fabrication system to produce a Hybridgel composed of an ECM hydrogel reinforced with an ECM cryogel. Further, we compared the effect of ECM-altering disease on the properties of the gels using elastin poor Chronic Obstructive Pulmonary Disease (COPD) vs non-diseased (ND) human lung source tissue. Nanoindentation confirmed the significant loss of elasticity in hydrogels compared to that of ND human lung and further demonstrated the recovery of elastic moduli in ECM cryogels and Hybridgels. These findings were supported by similar observations in diseased tissue and gels. Successful cell encapsulation, distribution, cytotoxicity, and infiltration were observed and characterized via confocal microscopy. Cells were uniformly distributed throughout the Hybridgel and capable of survival for 7 days. Cell-laden ECM hybridgels were found to have elasticity similar to that of ND human lung. Compositional investigation into diseased and ND gels indicated the conservation of disease-specific elastin to collagen ratios. In brief, we have engineered a composited ECM hybridgel for the 3D study of cell-matrix interactions of varying lung disease states that optimizes the application of decellularized lung ECM materials to more closely mimic the human lung while conserving the compositional bioactivity of the native ECM. STATEMENT OF SIGNIFICANCE: The lack of an appropriate disease model for the study of chronic lung diseases continues to severely inhibit the advancement of treatments and preventions of these otherwise fatal illnesses due to the inability to recapture the biocomplexity of pathologic cell-ECM interactions. Engineering biomaterials that utilize decellularized lungs offers an opportunity to deconstruct, understand, and rebuild models that highlight and investigate how disease specific characteristics of the extracellular environment are involved in driving disease progression. We have advanced this space by designing a binary fabrication system for a ECM Hybridgel that retains properties from its source material required to observe native matrix interactions. This design simulates a 3D lung environment that is both mechanically elastic and compositionally relevant when derived from non-diseased tissue and pathologically diminished both mechanically and compositionally when derived from COPD tissue. Here we describe the ECM hybridgel as a model for the study of cell-ECM interactions involved in COPD.
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Affiliation(s)
- Leigh-Ann M Antczak
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Karah N Moore
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Taylor E Hendrick
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Rebecca L Heise
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA.
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2
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Pietryga K, Reczyńska-Kolman K, Reseland JE, Haugen H, Larreta-Garde V, Pamuła E. Biphasic monolithic osteochondral scaffolds obtained by diffusion-limited enzymatic mineralization of gellan gum hydrogel. Biocybern Biomed Eng 2023. [DOI: 10.1016/j.bbe.2022.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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3
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Dorishetty P, Balu R, Gelmi A, Mata JP, Dutta NK, Choudhury NR. 3D Printable Soy/Silk Hybrid Hydrogels for Tissue Engineering Applications. Biomacromolecules 2021; 22:3668-3678. [PMID: 34460237 DOI: 10.1021/acs.biomac.1c00250] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The development of protein-based 3D printable hydrogel systems with tunable structure and properties is a critical challenge in contemporary biomedicine. Particularly, 3D printing of modular hydrogels comprising different types of protein tertiary structure, such as globular and fibrous, has not yet been achieved. Here we report the extrusion-based 3D printing of hybrid hydrogels photochemically co-cross-linked between globular soy protein isolate (SPI) and fibrous silk fibroin (SF) for the first time. The hierarchical structure and organization of pristine SPI and SF, and 1:3 (SPI/SF) hybrid inks under various shear stress were investigated using in situ rheology combined with small-/ultra-small-angle neutron scattering (Rheo-SANS/USANS). The hybrid ink exhibited an isotropic mass fractal structure that was stable between tested shear rates of 0.1 and 100 s-1 (near printing shear). The kinetics of sol-gel transition during the photo-cross-linking reaction and the micromechanical properties of fabricated hydrogels were investigated using photorheology and atomic force microscopy, where the hybrid hydrogels exhibited tunable storage and Young's moduli in the range of 13-29 and 214-811 kPa, respectively. The cross-link density and printing accuracy of hybrid hydrogels and inks were observed to increase with the increase in SF content. The 3D printed hybrid hydrogels exhibited a micropore size larger than that of solution casted hydrogels; where the 3D printed 1:3 (SPI/SF) hybrid hydrogel showed a pore size about 7.6 times higher than that of the casted hydrogel. Moreover, the fabricated hybrid hydrogels exhibit good mouse fibroblast cell attachment, viability, and proliferation, demonstrating their potential for tissue engineering applications.
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Affiliation(s)
- Pramod Dorishetty
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Rajkamal Balu
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Amy Gelmi
- School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Jitendra P Mata
- Australian Centre for Neutron Scattering (ACNS), Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Sydney, NSW 2232, Australia
| | - Naba K Dutta
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
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4
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Cui L, Yao Y, Yim EKF. The effects of surface topography modification on hydrogel properties. APL Bioeng 2021; 5:031509. [PMID: 34368603 PMCID: PMC8318605 DOI: 10.1063/5.0046076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 06/21/2021] [Indexed: 12/23/2022] Open
Abstract
Hydrogel has been an attractive biomaterial for tissue engineering, drug delivery, wound healing, and contact lens materials, due to its outstanding properties, including high water content, transparency, biocompatibility, tissue mechanical matching, and low toxicity. As hydrogel commonly possesses high surface hydrophilicity, chemical modifications have been applied to achieve the optimal surface properties to improve the performance of hydrogels for specific applications. Ideally, the effects of surface modifications would be stable, and the modification would not affect the inherent hydrogel properties. In recent years, a new type of surface modification has been discovered to be able to alter hydrogel properties by physically patterning the hydrogel surfaces with topographies. Such physical patterning methods can also affect hydrogel surface chemical properties, such as protein adsorption, microbial adhesion, and cell response. This review will first summarize the works on developing hydrogel surface patterning methods. The influence of surface topography on interfacial energy and the subsequent effects on protein adsorption, microbial, and cell interactions with patterned hydrogel, with specific examples in biomedical applications, will be discussed. Finally, current problems and future challenges on topographical modification of hydrogels will also be discussed.
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Affiliation(s)
- Linan Cui
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Yuan Yao
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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5
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Pérez-Calixto D, Amat-Shapiro S, Zamarrón-Hernández D, Vázquez-Victorio G, Puech PH, Hautefeuille M. Determination by Relaxation Tests of the Mechanical Properties of Soft Polyacrylamide Gels Made for Mechanobiology Studies. Polymers (Basel) 2021; 13:629. [PMID: 33672475 PMCID: PMC7923444 DOI: 10.3390/polym13040629] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/08/2021] [Accepted: 02/11/2021] [Indexed: 02/04/2023] Open
Abstract
Following the general aim of recapitulating the native mechanical properties of tissues and organs in vitro, the field of materials science and engineering has benefited from recent progress in developing compliant substrates with physical and chemical properties similar to those of biological materials. In particular, in the field of mechanobiology, soft hydrogels can now reproduce the precise range of stiffnesses of healthy and pathological tissues to study the mechanisms behind cell responses to mechanics. However, it was shown that biological tissues are not only elastic but also relax at different timescales. Cells can, indeed, perceive this dissipation and actually need it because it is a critical signal integrated with other signals to define adhesion, spreading and even more complicated functions. The mechanical characterization of hydrogels used in mechanobiology is, however, commonly limited to the elastic stiffness (Young's modulus) and this value is known to depend greatly on the measurement conditions that are rarely reported in great detail. Here, we report that a simple relaxation test performed under well-defined conditions can provide all the necessary information for characterizing soft materials mechanically, by fitting the dissipation behavior with a generalized Maxwell model (GMM). The simple method was validated using soft polyacrylamide hydrogels and proved to be very useful to readily unveil precise mechanical properties of gels that cells can sense and offer a set of characteristic values that can be compared with what is typically reported from microindentation tests.
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Affiliation(s)
- Daniel Pérez-Calixto
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
- Posgrado en Ciencia e Ingeniería de Materiales, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Samuel Amat-Shapiro
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Diego Zamarrón-Hernández
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Genaro Vázquez-Victorio
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Pierre-Henri Puech
- Adhesion and Inflammation Lab (LAI), Aix Marseille University, LAI UM 61, Inserm, UMR_S 1067, CNRS, UMR 7333, F-13288 Marseille, France;
| | - Mathieu Hautefeuille
- Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (D.P.-C.); (S.A.-S.); (D.Z.-H.); (G.V.-V.)
- Laboratorio Nacional de Soluciones Biomiméticas para Diagnóstico y Terapia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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Oliver-Urrutia C, Rosales Ibañez R, Flores-Merino MV, Vojtova L, Salplachta J, Čelko L, Kaiser J, Montufar EB. Lyophilized Polyvinylpyrrolidone Hydrogel for Culture of Human Oral Mucosa Stem Cells. MATERIALS 2021; 14:ma14010227. [PMID: 33466418 PMCID: PMC7796241 DOI: 10.3390/ma14010227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 02/07/2023]
Abstract
This work shows the synthesis of a polyvinylpyrrolidone (PVP) hydrogel by heat-activated polymerization and explores the production of hydrogels with an open porous network by lyophilisation to allow the three-dimensional culture of human oral mucosa stem cells (hOMSCs). The swollen hydrogel showed a storage modulus similar to oral mucosa and elastic solid rheological behaviour without sol transition. A comprehensive characterization of porosity by scanning electron microscopy, mercury intrusion porosimetry and nano-computed tomography (with spatial resolution below 1 μm) showed that lyophilisation resulted in the heterogeneous incorporation of closed oval-like pores in the hydrogel with broad size distribution (5 to 180 μm, d50 = 65 μm). Human oral mucosa biopsies were used to isolate hOMSCs, expressing typical markers of mesenchymal stem cells in more than 95% of the cell population. Direct contact cytotoxicity assay demonstrated that PVP hydrogel have no negative effect on cell metabolic activity, allowing the culture of hOMSCs with normal fusiform morphology. Pore connectivity should be improved in future to allow cell growth in the bulk of the PVP hydrogel.
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Affiliation(s)
- Carolina Oliver-Urrutia
- Faculty of Chemistry, Autonomous University of the State of Mexico, Paseo Colon S/N, Toluca 50120, Mexico;
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
- Correspondence: (C.O.-U.); (J.S.); Tel.: +420-54114-9284 (J.S.)
| | - Raúl Rosales Ibañez
- Faculty of Higher Studies Iztacala, National Autonomous University of Mexico, Los Reyes Iztacala 1, Mexico City 54090, Mexico;
| | - Miriam V. Flores-Merino
- Faculty of Chemistry, Autonomous University of the State of Mexico, Paseo Colon S/N, Toluca 50120, Mexico;
| | - Lucy Vojtova
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
| | - Jakub Salplachta
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
- Correspondence: (C.O.-U.); (J.S.); Tel.: +420-54114-9284 (J.S.)
| | - Ladislav Čelko
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
| | - Jozef Kaiser
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
| | - Edgar B. Montufar
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, 61200 Brno, Czech Republic; (L.V.); (L.Č.); (J.K.); (E.B.M.)
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7
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Shur M, Fallegger F, Pirondini E, Roux A, Bichat A, Barraud Q, Courtine G, Lacour SP. Soft Printable Electrode Coating for Neural Interfaces. ACS APPLIED BIO MATERIALS 2020; 3:4388-4397. [DOI: 10.1021/acsabm.0c00401] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Michael Shur
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Center for Neuroprosthetics, École Polytechnique Fédérale de Lausanne (EPFL), Geneva 1202, Switzerland
| | - Florian Fallegger
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Center for Neuroprosthetics, École Polytechnique Fédérale de Lausanne (EPFL), Geneva 1202, Switzerland
| | - Elvira Pirondini
- Department of Radiology and Medical Informatics, University of Geneva, Geneva 1211, Switzerland
- Defitech Center for Interventional Neurotherapies (NeuroRestore), Department of Neurosurgery, University Hospital of Lausanne (CHUV) and University of Lausanne (UNIL), Lausanne 1015, Switzerland
| | - Adrien Roux
- Tissue Engineering Laboratory, HEPIA - HES-SO University of Applied Sciences and Arts Western Switzerland, Geneva 1202, Switzerland
- Swiss Center for Applied Human Toxicology (SCAHT), Basel 4055, Switzerland
| | - Arnaud Bichat
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Center for Neuroprosthetics, École Polytechnique Fédérale de Lausanne (EPFL), Geneva 1202, Switzerland
- Center for Neuroprosthetics and Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1002, Switzerland
- Defitech Center for Interventional Neurotherapies (NeuroRestore), Department of Neurosurgery, University Hospital of Lausanne (CHUV) and University of Lausanne (UNIL), Lausanne 1015, Switzerland
| | - Quentin Barraud
- Center for Neuroprosthetics and Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1002, Switzerland
- Defitech Center for Interventional Neurotherapies (NeuroRestore), Department of Neurosurgery, University Hospital of Lausanne (CHUV) and University of Lausanne (UNIL), Lausanne 1015, Switzerland
| | - Grégoire Courtine
- Center for Neuroprosthetics and Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1002, Switzerland
- Defitech Center for Interventional Neurotherapies (NeuroRestore), Department of Neurosurgery, University Hospital of Lausanne (CHUV) and University of Lausanne (UNIL), Lausanne 1015, Switzerland
| | - Stéphanie P. Lacour
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Center for Neuroprosthetics, École Polytechnique Fédérale de Lausanne (EPFL), Geneva 1202, Switzerland
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8
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Higgins CI, Killgore JP, DelRio FW, Bryant SJ, McLeod RR. Photo-tunable hydrogel mechanical heterogeneity informed by predictive transport kinetics model. SOFT MATTER 2020; 16:4131-4141. [PMID: 32202291 PMCID: PMC7489306 DOI: 10.1039/d0sm00052c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Understanding the three-dimensional (3D) mechanical and chemical properties of distinctly different, adjacent biological tissues is crucial to mimicking their complex properties with materials. 3D printing is a technique often employed to spatially control the distribution of the biomaterials, such as hydrogels, of interest, but it is difficult to print both mechanically robust (high modulus and toughness) and biocompatible (low modulus) hydrogels in a single structure. Moreover, due to the fast diffusion of mobile species during printing and nonequilibrium swelling conditions of low-solids-content hydrogels, it is challenging to form the high-fidelity structures required to mimic tissues. Here a predictive transport and swelling model is presented to model these effects and then is used to compensate for these effects during printing. This model is validated experimentally by photopatterning spatially distinct hydrogel elastic moduli using a single photo-tunable poly(ethylene glycol) (PEG) pre-polymer solution by sequentially patterning and in-diffusing fresh pre-polymer for further polymerization.
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Affiliation(s)
- Callie I Higgins
- Applied Chemicals and Materials Division, Material Measurement Laboratory, National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USA.
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9
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Randriantsilefisoa R, Cuellar-Camacho JL, Chowdhury MS, Dey P, Schedler U, Haag R. Highly sensitive detection of antibodies in a soft bioactive three-dimensional bioorthogonal hydrogel. J Mater Chem B 2019. [DOI: 10.1039/c9tb00234k] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This three-dimensional detection method of antibodies offers a high sensitivity and good biomolecule stability for new biosensing devices.
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Affiliation(s)
| | | | | | - Pradip Dey
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- Takustr. 3
- Berlin
- Germany
| | - Uwe Schedler
- PolyAn GmbH
- Rudolf-Baschant-Strasse 2
- 13086 Berlin
- Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- Takustr. 3
- Berlin
- Germany
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10
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Kang B, Shin J, Park HJ, Rhyou C, Kang D, Lee SJ, Yoon YS, Cho SW, Lee H. High-resolution acoustophoretic 3D cell patterning to construct functional collateral cylindroids for ischemia therapy. Nat Commun 2018; 9:5402. [PMID: 30573732 PMCID: PMC6302096 DOI: 10.1038/s41467-018-07823-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 11/23/2018] [Indexed: 12/14/2022] Open
Abstract
The fabrication of functional tissues is essential for clinical applications such as disease treatment and drug discovery. Recent studies have revealed that the mechanical environments of tissues, determined by geometric cell patterns, material composition, or mechanical properties, play critical roles in ensuring proper tissue function. Here, we propose an acoustophoretic technique using surface acoustic waves to fabricate therapeutic vascular tissue containing a three-dimensional collateral distribution of vessels. Co-aligned human umbilical vein endothelial cells and human adipose stem cells that are arranged in a biodegradable catechol-conjugated hyaluronic acid hydrogel exhibit enhanced cell-cell contacts, gene expression, and secretion of angiogenic and anti-inflammatory paracrine factors. The therapeutic effects of the fabricated vessel constructs are demonstrated in experiments using an ischemia mouse model by exhibiting the remarkable recovery of damaged tissue. Our study can be referenced to fabricate various types of artificial tissues that mimic the original functions as well as structures. Engineering 3D tissues faces the challenge of adequate vascularisation for nutrient delivery and gas exchange deep inside the construct. Here the authors use surface acoustic waves to create an aligned array of blood vessels in a hyaluronic acid hydrogel and use it to improve function in a mouse hindlimb ischemia model.
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Affiliation(s)
- Byungjun Kang
- School of Mechanical Engineering, Yonsei University, Seoul, 03722, Korea
| | - Jisoo Shin
- Department of Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Hyun-Ji Park
- Department of Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - Chanryeol Rhyou
- School of Mechanical Engineering, Yonsei University, Seoul, 03722, Korea
| | - Donyoung Kang
- School of Mechanical Engineering, Yonsei University, Seoul, 03722, Korea
| | - Shin-Jeong Lee
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Young-Sup Yoon
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Seung-Woo Cho
- Department of Biotechnology, Yonsei University, Seoul, 03722, Korea. .,Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 03722, Korea.
| | - Hyungsuk Lee
- School of Mechanical Engineering, Yonsei University, Seoul, 03722, Korea.
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11
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Ménard M, Meyer F, Parkhomenko K, Leuvrey C, Francius G, Bégin-Colin S, Mertz D. Mesoporous silica templated-albumin nanoparticles with high doxorubicin payload for drug delivery assessed with a 3-D tumor cell model. Biochim Biophys Acta Gen Subj 2018; 1863:332-341. [PMID: 30391506 DOI: 10.1016/j.bbagen.2018.10.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 11/16/2022]
Abstract
Human serum albumin (HSA) nanoparticles emerge as promising carriers for drug delivery. Among challenges, one important issue is the design of HSA nanoparticles with a low mean size of ca. 50 nm and having a high drug payload. The original strategy developed here is to use sacrificial mesoporous nanosilica templates having a diameter close to 30 nm to drive the protein nanocapsule formation. This new approach ensures first an efficient high drug loading (ca. 30%) of Doxorubicin (DOX) in the porous silica by functionalizing silica with an aminosiloxane layer and then allows the one-step adsorption and the physical cross-linking of HSA by modifying the silica surface with isobutyramide (IBAM) groups. After silica template removal, homogenous DOX-loaded HSA nanocapsules (30-60 nm size) with high drug loading capacity (ca. 88%) are thus formed. Such nanocapsules are shown efficient in multicellular tumor spheroid models (MCTS) of human hepatocarcinoma cells by their significant growth inhibition with respect to controls. Such a new synthesis approach paves the way toward new protein based nanocarriers for drug delivery.
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Affiliation(s)
- Mathilde Ménard
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France; Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France
| | - Florent Meyer
- Université de Strasbourg, INSERM, UMR_S 1121 Biomatériaux et bioingénierie, FMTS, 11 rue Humann, 67085 Strasbourg, Cedex, France.
| | - Ksenia Parkhomenko
- Institut de Chimie et Procédés pour l'Energie l'Environnement et la Santé, 25 rue Becquerel, 67087 Strasbourg, France
| | - Cédric Leuvrey
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France
| | - Grégory Francius
- CNRS - Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, LCPME, UMR 7564, Villers-lès-Nancy F-54600, France
| | - Sylvie Bégin-Colin
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France.
| | - Damien Mertz
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS, Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg, France.
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12
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Ekladious I, Liu R, Varongchayakul N, Mejia Cruz LA, Todd DA, Zhang H, Oberlies NH, Padera RF, Colson YL, Grinstaff MW. Reinforcement of polymeric nanoassemblies for ultra-high drug loadings, modulation of stiffness and release kinetics, and sustained therapeutic efficacy. NANOSCALE 2018; 10:8360-8366. [PMID: 29717728 DOI: 10.1039/c8nr01978a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The optimization of current polymeric nanoparticle therapies is restricted by low drug loadings and limited tunability of core properties. To overcome these shortcomings, a novel self-association approach is utilized to fabricate a dual-loaded poly(1,2-glycerol carbonate)-graft-succinic acid-paclitaxel (PGC-PTX) conjugate nanoparticle (NP) in which the physical entrapment of free paclitaxel (PTX) affords unprecedented ultra-high drug loadings >100 wt%, modulation of mechanical stiffness, and tunable release kinetics. Despite high incorporation of free PTX (up to 50 wt%), the dual-loaded PGC-PTX nanocarriers (i.e., PGC-PTX + PTX NPs) exhibit controlled and sustained drug release over 15 days, without burst release effects. Importantly, optimization of drug/material efficiency concomitantly affords improved in vitro efficacy. In vivo, PGC-PTX + PTX NPs are safely administered at doses exceeding the median lethal dose of standard PTX, while a single high dose significantly extends survival relative to weekly PTX administrations in a murine model of peritoneal carcinomatosis.
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Affiliation(s)
- Iriny Ekladious
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA 02215, USA.
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13
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Rödling L, Volz EM, Raic A, Brändle K, Franzreb M, Lee-Thedieck C. Magnetic Macroporous Hydrogels as a Novel Approach for Perfused Stem Cell Culture in 3D Scaffolds via Contactless Motion Control. Adv Healthc Mater 2018; 7:e1701403. [PMID: 29349923 DOI: 10.1002/adhm.201701403] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Indexed: 12/14/2022]
Abstract
There is an urgent need for 3D cell culture systems that avoid the oversimplifications and artifacts of conventional culture in 2D. However, 3D culture within the cavities of porous biomaterials or large 3D structures harboring high cell numbers is limited by the needs to nurture cells and to remove growth-limiting metabolites. To overcome the diffusion-limited transport of such soluble factors in 3D culture, mixing can be improved by pumping, stirring or shaking, but this in turn can lead to other problems. Using pumps typically requires custom-made accessories that are not compatible with conventional cell culture disposables, thus interfering with cell production processes. Stirring or shaking allows little control over movement of scaffolds in media. To overcome these limitations, magnetic, macroporous hydrogels that can be moved or positioned within media in conventional cell culture tubes in a contactless manner are presented. The cytocompatibility of the developed biomaterial and the applied magnetic fields are verified for human hematopoietic stem and progenitor cells (HSPCs). The potential of this technique for perfusing 3D cultures is demonstrated in a proof-of-principle study that shows that controlled contactless movement of cell-laden magnetic hydrogels in culture media can mimic the natural influence of differently perfused environments on HSPCs.
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Affiliation(s)
- Lisa Rödling
- Karlsruhe Institute of Technology (KIT); Institute of Functional Interfaces; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Esther Magano Volz
- Karlsruhe Institute of Technology (KIT); Institute of Functional Interfaces; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Annamarija Raic
- Karlsruhe Institute of Technology (KIT); Institute of Functional Interfaces; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Katharina Brändle
- Karlsruhe Institute of Technology (KIT); Institute of Functional Interfaces; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Matthias Franzreb
- Karlsruhe Institute of Technology (KIT); Institute of Functional Interfaces; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Cornelia Lee-Thedieck
- Karlsruhe Institute of Technology (KIT); Institute of Functional Interfaces; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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14
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Effects of Liposomes Contained in Thermosensitive Hydrogels as Biomaterials Useful in Neural Tissue Engineering. MATERIALS 2017; 10:ma10101122. [PMID: 28937646 PMCID: PMC5666928 DOI: 10.3390/ma10101122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 09/16/2017] [Accepted: 09/20/2017] [Indexed: 12/20/2022]
Abstract
Advances in the generation of suitable thermosensitive hydrogels for the delivery of cells in neural tissue engineering demonstrate a delicate relationship between physical properties and capabilities to promote cell proliferation and differentiation. To improve the properties of these materials, it is possible to add liposomes for the controlled release of bioactive elements, which in turn can affect the physical and biological properties of the hydrogels. In the present investigation, different hydrogels based on Pluronic F127 have been formulated with the incorporation of chitosan and two types of liposomes of two different sizes. The rheological and thermal properties and their relation with the neurite proliferation and growth of the PC12 cell line were evaluated. Our results show that the incorporation of liposomes modifies the properties of the hydrogels dependent on the concentration of chitosan and the lipid type in the liposomes, which directly affect the capabilities of the hydrogels to promote the viability and differentiation of PC12 cells.
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15
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Nair PM, Pandya SG, Dallo SF, Reddoch KM, Montgomery RK, Pidcoke HF, Cap AP, Ramasubramanian AK. Platelets stored at 4°C contribute to superior clot properties compared to current standard-of-care through fibrin-crosslinking. Br J Haematol 2017; 178:119-129. [PMID: 28580719 DOI: 10.1111/bjh.14751] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/20/2017] [Indexed: 02/05/2023]
Abstract
Currently, platelets for transfusion are stored at room temperature (RT) for 5-7 days with gentle agitation, but this is less than optimal because of loss of function and risk of bacterial contamination. We have previously demonstrated that cold (4°C) storage is an attractive alternative because it preserves platelet metabolic reserves, in vitro responses to agonists of activation, aggregation and physiological inhibitors, as well as adhesion to thrombogenic surfaces better than RT storage. Recently, the US Food and Drug Administration clarified that apheresis platelets stored at 4°C for up to 72 h may be used for treating active haemorrhage. In this work, we tested the hypothesis that cold-stored platelets contribute to generating clots with superior mechanical properties compared to RT-stored platelets. Rheological studies demonstrate that the clots formed from platelets stored at 4°C for 5 days are significantly stiffer (higher elastic modulus) and stronger (higher critical stress) than those formed from RT-stored platelets. Morphological analysis shows that clot fibres from cold-stored platelets were denser, thinner, straighter and with more branch points or crosslinks than those from RT-stored platelets. Our results also show that the enhanced clot strength and packed structure is due to cold-induced plasma factor XIII binding to platelet surfaces, and the consequent increase in crosslinking.
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Affiliation(s)
- Prajeeda M Nair
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, USA.,Blood Research Program, U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Shaunak G Pandya
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, USA
| | - Shatha F Dallo
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, USA
| | - Kristin M Reddoch
- Blood Research Program, U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Robbie K Montgomery
- Blood Research Program, U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Heather F Pidcoke
- Blood Research Program, U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Andrew P Cap
- Blood Research Program, U.S. Army Institute of Surgical Research, Fort Sam Houston, TX, USA
| | - Anand K Ramasubramanian
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, USA.,Department of Biomedical, Chemical and Materials Engineering, San José State University, San José, CA, USA
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16
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Heida T, Neubauer JW, Seuss M, Hauck N, Thiele J, Fery A. Mechanically Defined Microgels by Droplet Microfluidics. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600418] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Thomas Heida
- Institute of Physical Chemistry and Polymer Physics; Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
| | - Jens W. Neubauer
- Institute of Physical Chemistry and Polymer Physics; Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
| | - Maximilian Seuss
- Institute of Physical Chemistry and Polymer Physics; Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
| | - Nicolas Hauck
- Institute of Physical Chemistry and Polymer Physics; Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
- Leibniz Research Cluster (LRC); Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
| | - Julian Thiele
- Institute of Physical Chemistry and Polymer Physics; Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
- Leibniz Research Cluster (LRC); Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
| | - Andreas Fery
- Institute of Physical Chemistry and Polymer Physics; Leibniz-Institut für Polymerforschung Dresden e.V; Hohe Str. 6 01069 Dresden Germany
- Department of Physical Chemistry of Polymeric Materials; Technische Universität Dresden; Hohe Str. 6 01069 Dresden Germany
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17
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Alakpa E, Jayawarna V, Lampel A, Burgess K, West C, Bakker S, Roy S, Javid N, Fleming S, Lamprou D, Yang J, Miller A, Urquhart A, Frederix P, Hunt N, Péault B, Ulijn R, Dalby M. Tunable Supramolecular Hydrogels for Selection of Lineage-Guiding Metabolites in Stem Cell Cultures. Chem 2016. [DOI: 10.1016/j.chempr.2016.07.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Moshtagh PR, Pouran B, van Tiel J, Rauker J, Zuiddam MR, Arbabi V, Korthagen NM, Weinans H, Zadpoor AA. Micro- and nano-mechanics of osteoarthritic cartilage: The effects of tonicity and disease severity. J Mech Behav Biomed Mater 2016; 59:561-571. [PMID: 27043052 DOI: 10.1016/j.jmbbm.2016.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 02/23/2016] [Accepted: 03/09/2016] [Indexed: 10/22/2022]
Abstract
The present study aims to discover the contribution of glycosaminoglycans (GAGs) and collagen fibers to the mechanical properties of the osteoarthritic (OA) cartilage tissue. We used nanoindentation experiments to understand the mechanical behavior of mild and severe osteoarthritic cartilage at micro- and nano-scale at different swelling conditions. Contrast enhanced micro-computed tomography (EPIC-μCT) was used to confirm that mild OA specimens had significantly higher GAGs content compared to severe OA specimens. In micro-scale, the semi-equilibrium modulus of mild OA specimens significantly dropped after immersion in a hypertonic solution and at nano-scale, the histograms of the measured elastic modulus revealed three to four components. Comparing the peaks with those observed for healthy cartilage in a previous study indicated that the first and third peaks represent the mechanical properties of GAGs and the collagen network. The third peak shows considerably stiffer elastic modulus for mild OA samples as compared to the severe OA samples in isotonic conditions. Furthermore, this peak clearly dropped when the tonicity increased, indicating the loss of collagen (pre-) stress in the shrunk specimen. Our observations support the association of the third peak with the collagen network. However, our results did not provide any direct evidence to support the association of the first peak with GAGs. For severe OA specimens, the peak associated with the collagen network did not drop when the tonicity increased, indicating a change in the response of OA cartilage to hypertonicity, likely collagen damage, as the disease progresses to its latest stages.
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Affiliation(s)
- P R Moshtagh
- Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD, Delft, The Netherlands; Department of Orthopaedics, University Medical Center Utrecht, Q.03.2.103-1, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
| | - B Pouran
- Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD, Delft, The Netherlands; Department of Orthopaedics, University Medical Center Utrecht, Q.03.2.103-1, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
| | - J van Tiel
- Department of Orthopaedics and Radiology, Erasmus Medical Centre, Rotterdam, The Netherlands.
| | - J Rauker
- Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD, Delft, The Netherlands.
| | - M R Zuiddam
- Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ, Delft, The Netherlands.
| | - V Arbabi
- Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD, Delft, The Netherlands.
| | - N M Korthagen
- Department of Orthopaedics, University Medical Center Utrecht, Q.03.2.103-1, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands; Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
| | - H Weinans
- Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD, Delft, The Netherlands; Department of Orthopaedics, University Medical Center Utrecht, Q.03.2.103-1, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands; Department of Rheumatology, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - A A Zadpoor
- Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD, Delft, The Netherlands.
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19
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Caló E, Barros JMSD, Fernández-Gutiérrez M, San Román J, Ballamy L, Khutoryanskiy VV. Antimicrobial hydrogels based on autoclaved poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride) mixtures for wound care applications. RSC Adv 2016. [DOI: 10.1039/c6ra08234c] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel antimicrobial hydrogels with good mechanical and physical properties were synthesized by autoclaving aqueous mixtures of poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride).
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Affiliation(s)
- Enrica Caló
- Reading School of Pharmacy
- University of Reading
- Berkshire
- UK
| | | | | | - Julio San Román
- Institute of Polymer Science and Technology
- CSIC
- Madrid 28006
- Spain
- CIBER-BBN
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20
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Nalam PC, Gosvami NN, Caporizzo MA, Composto RJ, Carpick RW. Nano-rheology of hydrogels using direct drive force modulation atomic force microscopy. SOFT MATTER 2015; 11:8165-78. [PMID: 26337502 PMCID: PMC4839974 DOI: 10.1039/c5sm01143d] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We present a magnetic force-based direct drive modulation method to measure local nano-rheological properties of soft materials across a broad frequency range (10 Hz to 2 kHz) using colloid-attached atomic force microscope (AFM) probes in liquid. The direct drive method enables artefact-free measurements over several decades of excitation frequency, and avoids the need to evaluate medium-induced hydrodynamic drag effects. The method was applied to measure the local mechanical properties of polyacrylamide hydrogels. The frequency-dependent storage stiffness, loss stiffness, and loss tangent (tan δ) were quantified for hydrogels having high and low crosslinking densities by measuring the amplitude and the phase response of the cantilever while the colloid was in contact with the hydrogel. The frequency bandwidth was further expanded to lower effective frequencies (0.1 Hz to 10 Hz) by obtaining force-displacement (FD) curves. Slow FD measurements showed a recoverable but highly hysteretic response, with the contact mechanical behaviour dependent on the loading direction: approach curves showed Hertzian behaviour while retraction curves fit the JKR contact mechanics model well into the adhesive regime, after which multiple detachment instabilities occurred. Using small amplitude dynamic modulation to explore faster rates, the load dependence of the storage stiffness transitioned from Hertzian to a dynamic punch-type (constant contact area) model, indicating significant influence of material dissipation coupled with adhesion. Using the appropriate contact model across the full frequency range measured, the storage moduli were found to remain nearly constant until an increase began near ∼100 Hz. The softer gels' storage modulus increased from 7.9 ± 0.4 to 14.5 ± 2.1 kPa (∼85%), and the stiffer gels' storage modulus increased from 16.3 ± 1.1 to 31.7 ± 5.0 kPa (∼95%). This increase at high frequencies may be attributed to a contribution from solvent confinement in the hydrogel (poroelasticity). The storage moduli measured by both macro-rheometry and AFM FD curves were comparable to those measured using the modulation method at their overlapping frequencies (10-25 Hz). In all cases, care was taken to ensure the contact mechanics models were applied within the important limit of small relative deformations. This study thus highlights possible transitions in the probe-material contact mechanical behaviour for soft matter, especially when the applied strain rates and the material relaxation rates become comparable. In particular, at low frequencies, the modulus follows Hertzian contact mechanics, while at high frequencies adhesive contact is well represented by punch-like behaviour. More generally, use of the Hertz model on hydrogels at high loading rates, at high strains, or during the retraction portion of FD curves, leads to significant errors in the calculated moduli.
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Affiliation(s)
- Prathima C Nalam
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, USA.
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21
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Application of the Johnson–Kendall–Roberts model in AFM-based mechanical measurements on cells and gel. Colloids Surf B Biointerfaces 2015; 134:131-9. [DOI: 10.1016/j.colsurfb.2015.06.044] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 06/02/2015] [Accepted: 06/22/2015] [Indexed: 11/17/2022]
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22
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Di Lorenzo F, Hellwig J, von Klitzing R, Seiffert S. Macroscopic and Microscopic Elasticity of Heterogeneous Polymer Gels. ACS Macro Lett 2015; 4:698-703. [PMID: 35596490 DOI: 10.1021/acsmacrolett.5b00228] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polymer-network gels often exhibit local defects and spatial heterogeneity of their cross-linking density, which may differently affect their elasticity on microscopic and macroscopic scales. To appraise this effect, we prepare polymeric gels with defined extents of nanostructural heterogeneity and use atomic force microscopy to probe their local microscopic Young's moduli in comparison to their macroscopic elastic moduli measured by shear rheology. In this comparison, the moduli of the heterogeneous gels are found to be progressively smaller if the length scale of the probed gel region exceeds the size of the purposely imparted polymer-network heterogeneities. This finding can be explained with a conceptual picture of nonaffine deformation of the densely cross-linked polymer network domains in the heterogeneous gels.
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Affiliation(s)
- Fany Di Lorenzo
- Helmholtz-Zentrum
Berlin, Soft Matter and Functional Materials, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany
- Helmholtz Virtual
Institute “Multifunctional Biomaterials for Medicine”, Kantstr. 55, D-14513 Teltow, Germany
| | - Johannes Hellwig
- Technische Universität Berlin, Stranski-Laboratorium, Strasse des 17. Juni 124, D-10623 Berlin, Germany
| | - Regine von Klitzing
- Technische Universität Berlin, Stranski-Laboratorium, Strasse des 17. Juni 124, D-10623 Berlin, Germany
| | - Sebastian Seiffert
- Helmholtz-Zentrum
Berlin, Soft Matter and Functional Materials, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany
- Helmholtz Virtual
Institute “Multifunctional Biomaterials for Medicine”, Kantstr. 55, D-14513 Teltow, Germany
- Freie Universität Berlin, Institute of
Chemistry and Biochemistry, Takustr. 3, D-14195 Berlin, Germany
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23
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Decoupling the role of stiffness from other hydroxyapatite signalling cues in periosteal derived stem cell differentiation. Sci Rep 2015; 5:10778. [PMID: 26035412 PMCID: PMC4451686 DOI: 10.1038/srep10778] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 05/05/2015] [Indexed: 12/15/2022] Open
Abstract
Bone extracellular matrix (ECM) is a natural composite made of collagen and mineral hydroxyapatite (HA). Dynamic cell-ECM interactions play a critical role in regulating cell differentiation and function. Understanding the principal ECM cues promoting osteogenic differentiation would be pivotal for both bone tissue engineering and regenerative medicine. Altering the mineral content generally modifies the stiffness as well as other physicochemical cues provided by composite materials, complicating the “cause-effect” analysis of resultant cell behaviour. To isolate the contribution of mechanical cues from other HA-derived signals, we developed and characterised composite HA/gelatin scaffolds with different mineral contents along with a set of stiffness-matched HA-free gelatin scaffolds. Samples were seeded with human periosteal derived progenitor cells (PDPCs) and cultured over 7 days, analysing their resultant morphology and gene expression. Our results show that both stiffness and HA contribute to directing PDPC osteogenic differentiation, highlighting the role of stiffness in triggering the expression of osteogenic genes and of HA in accelerating the process, particularly at high concentrations.
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24
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Credi C, Biella S, De Marco C, Levi M, Suriano R, Turri S. Fine tuning and measurement of mechanical properties of crosslinked hyaluronic acid hydrogels as biomimetic scaffold coating in regenerative medicine. J Mech Behav Biomed Mater 2014; 29:309-16. [DOI: 10.1016/j.jmbbm.2013.09.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 09/17/2013] [Accepted: 09/21/2013] [Indexed: 11/24/2022]
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25
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Platzman I, Muth CA, Lee-Thedieck C, Pallarola D, Atanasova R, Louban I, Altrock E, Spatz JP. Surface Properties of Nanostructured Bio-Active Interfaces: Impacts of Surface Stiffness and Topography on Cell-Surface Interactions. RSC Adv 2013; 3:13293-13303. [PMID: 33791090 PMCID: PMC8009309 DOI: 10.1039/c3ra41579a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Due to their ability to confer key functions of the native extracellular matrix (ECM) poly(ethylene glycol) (PEG)-based and PEG-modified materials have been extensively used as biocompatible and biofunctionalized substrate systems to study the influence of environmental parameters on cell adhesion in vitro. Given wide-ranging recent evidence that ECM compliance influences a variety of cell functions, the detailed determination and characterization of the specific PEG surface characteristics including topography, stiffness and chemistry is required. Here, we studied two frequently used bio-active interfaces - PEG-based and PEG-modified surfaces - to elucidate the differences between the physical surface properties, which cells can sense and respond to. For this purpose, two sets of surfaces were synthesized: the first set consisted of nanopatterned glass surfaces containing cRGD-functionalized gold nanoparticles surrounded by a passivated PEG-silane layer and the second set consisted of PEG-diacrylate (PEG-DA) hydrogels decorated with cRGD-functionalized gold nanoparticlesAlthough the two sets of nanostructured materials compared here were highly similar in terms of density and geometrical distribution of the presented bio-ligands as well as in terms of mechanical bulk properties, the topography and mechanical properties of the surfaces were found to be substantially different and are described in detail. In comparison to very stiff and ultrasmooth surface properties of the PEG-passivated glasses, the mechanical properties of PEG-DA surfaces in the biologically relevant stiffness range, together with the increased surface roughness at micro- and nanoscale levels have the potential to affect cell behavior. This potential was verified by studying the adhesive behavior of hematopoietic KG-1a and rat embryonic fibroblast (REF52) cells on both surfaces.
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Affiliation(s)
- Ilia Platzman
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
| | - Christine Anna Muth
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
| | - Cornelia Lee-Thedieck
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces, Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Diego Pallarola
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
| | - Ralitsa Atanasova
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
| | - Ilia Louban
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
| | - Eva Altrock
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
| | - Joachim P Spatz
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, Stuttgart 70569, Germany & Department of Biophysical Chemistry, University of Heidelberg, Heidelberg 69120, Germany
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26
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Kiang JD, Wen JH, del Álamo JC, Engler AJ. Dynamic and reversible surface topography influences cell morphology. J Biomed Mater Res A 2013; 101:2313-21. [PMID: 23355509 DOI: 10.1002/jbm.a.34543] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 11/14/2012] [Accepted: 11/19/2012] [Indexed: 11/06/2022]
Abstract
Microscale and nanoscale surface topography changes can influence cell functions, including morphology. Although in vitro responses to static topography are novel, cells in vivo constantly remodel topography. To better understand how cells respond to changes in topography over time, we developed a soft polyacrylamide hydrogel with magnetic nickel microwires randomly oriented in the surface of the material. Varying the magnetic field around the microwires reversibly induced their alignment with the direction of the field, causing the smooth hydrogel surface to develop small wrinkles; changes in surface roughness, ΔRRMS , ranged from 0.05 to 0.70 μm and could be oscillated without hydrogel creep. Vascular smooth muscle cell morphology was assessed when exposed to acute and dynamic topography changes. Area and shape changes occurred when an acute topographical change was imposed for substrates exceeding roughness of 0.2 μm, but longer-term oscillating topography did not produce significant changes in morphology irrespective of wire stiffness. These data imply that cells may be able to use topography changes to transmit signals as they respond immediately to changes in roughness.
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Affiliation(s)
- Jennifer D Kiang
- Department of Bioengineering, University of California, San Diego, La Jolla, California 92093, USA
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Choi YS, Vincent LG, Lee AR, Kretchmer KC, Chirasatitsin S, Dobke MK, Engler AJ. The alignment and fusion assembly of adipose-derived stem cells on mechanically patterned matrices. Biomaterials 2012; 33:6943-51. [PMID: 22800539 DOI: 10.1016/j.biomaterials.2012.06.057] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 06/22/2012] [Indexed: 01/18/2023]
Abstract
Cell patterning is typically accomplished by selectively depositing proteins for cell adhesion only on patterned regions; however in tissues, cells are also influenced by mechanical stimuli, which can also result in patterned arrangements of cells. We developed a mechanically-patterned hydrogel to observe and compare it to extracellular matrix (ECM) ligand patterns to determine how to best regulate and improve cell type-specific behaviors. Ligand-based patterning on hydrogels was not robust over prolonged culture, but cells on mechanically-patterned hydrogels differentially sorted based on stiffness preference: myocytes and adipose-derived stem cells (ASCs) underwent stiffness-mediated migration, i.e. durotaxis, and remained on myogenic hydrogel regions. Myocytes developed aligned striations and fused on myogenic stripes of the mechanically-patterned hydrogel. ASCs aligned and underwent myogenesis, but their fusion rate increased, as did the number of cells fusing into a myotube as a result of their alignment. Conversely, neuronal cells did not exhibit durotaxis and could be seen on soft regions of the hydrogel for prolonged culture time. These results suggest that mechanically-patterned hydrogels could provide a platform to create tissue engineered, innervated micro-muscles of neural and muscle phenotypes juxtaposed next to each other in order better recreate a muscle niche.
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Affiliation(s)
- Yu Suk Choi
- Departments of Bioengineering, University of California, San Diego, CA 92093, USA
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Mercadé-Prieto R, Zhang Z. Mechanical characterization of microspheres – capsules, cells and beads: a review. J Microencapsul 2012; 29:277-85. [DOI: 10.3109/02652048.2011.646331] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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29
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Network connectivity, mechanical properties and cell adhesion for hyaluronic acid/PEG hydrogels. Biomaterials 2011; 32:6456-70. [DOI: 10.1016/j.biomaterials.2011.05.044] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Accepted: 05/12/2011] [Indexed: 10/18/2022]
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