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Zamuner A, Zeni E, Elsayed H, Di Foggia M, Taddei P, Pasquato A, Di Silvio L, Bernardo E, Brun P, Dettin M. Proteolytically Resistant Bioactive Peptide-Grafted Sr/Mg-Doped Hardystonite Foams: Comparison of Two Covalent Functionalization Strategies. Biomimetics (Basel) 2023; 8:biomimetics8020185. [PMID: 37218771 DOI: 10.3390/biomimetics8020185] [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: 02/24/2023] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/24/2023] Open
Abstract
Hardystonite-based (HT) bioceramic foams were easily obtained via thermal treatment of silicone resins and reactive oxide fillers in air. By using a commercial silicone, incorporating strontium oxide and magnesium oxide precursors (as well as CaO and ZnO), and treating it at 1100 °C, a complex solid solution (Ca1.4Sr0.6Zn0.85Mg0.15Si2O7) that has superior biocompatibility and bioactivity properties compared to pure hardystonite (Ca2ZnSi2O7) can be obtained. Proteolytic-resistant adhesive peptide mapped on vitronectin (D2HVP), was selectively grafted to Sr/Mg-doped HT foams using two different strategies. Unfortunately, the first method (via protected peptide) was unsuitable for acid-sensitive materials such as Sr/Mg-doped HT, resulting in the release of cytotoxic levels of Zinc over time, with consequent negative cellular response. To overcome this unexpected result, a novel functionalization strategy requiring aqueous solution and mild conditions was designed. Sr/Mg-doped HT functionalized with this second strategy (via aldehyde peptide) showed a dramatic increase in human osteoblast proliferation at 6 days compared to only silanized or non-functionalized samples. Furthermore, we demonstrated that the functionalization treatment does not induce any cytotoxicity. Functionalized foams enhanced mRNA-specific transcript levels coding IBSP, VTN, RUNX2, and SPP1 at 2 days post-seeding. In conclusion, the second functionalization strategy proved to be appropriate for this specific biomaterial and was effective at enhancing the material's bioactivity.
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Affiliation(s)
- Annj Zamuner
- Department of Civil, Environmental and Architectural Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy
| | - Elena Zeni
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy
| | - Hamada Elsayed
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy
| | - Michele Di Foggia
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Paola Taddei
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Antonella Pasquato
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy
| | - Lucy Di Silvio
- Faculty of Dentistry, Oral & Craniofacial Sciences King's College London, London SE1 9RT, UK
| | - Enrico Bernardo
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy
| | - Paola Brun
- Department of Molecular Medicine, University of Padua, Via Gabelli 63, 35121 Padova, Italy
| | - Monica Dettin
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy
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Selective Grafting of Protease-Resistant Adhesive Peptides on Titanium Surfaces. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248727. [PMID: 36557865 PMCID: PMC9781125 DOI: 10.3390/molecules27248727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
In orthopedic, dental, and maxillofacial fields, joint prostheses, plates, and screws are widely used in the treatment of problems related to bone tissue. However, the use of these prosthetic systems is not free from complications: the fibrotic encapsulation of endosseous implants often prevents optimal integration of the prostheses with the surrounding bone. To overcome these issues, biomimetic titanium implants have been developed where synthetic peptides have been selectively grafted on titanium surfaces via Schiff base formation. We used the retro-inverted sequence (DHVPX) from [351-359] human Vitronectin and its dimer (D2HVP). Both protease-resistant peptides showed increased human osteoblast adhesion and proliferation, an augmented number of focal adhesions, and cellular spreading with respect to the control. D2HVP-grafted samples significantly enhance Secreted Phosphoprotein 1, Integrin Binding Sialoprotein, and Vitronectin gene expression vs. control. An estimation of peptide surface density was determined by Two-photon microscopy analysis on a silanized glass model surface labeled with a fluorescent analog.
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Zamuner A, Brun P, Ciccimarra R, Ravanetti F, Veschini L, Elsayed H, Sivolella S, Iucci G, Porzionato A, Silvio LD, Cacchioli A, Bernardo E, Dettin M. Biofunctionalization of bioactive ceramic scaffolds to increase the cell response for bone regeneration. Biomed Mater 2021; 16. [PMID: 34271554 DOI: 10.1088/1748-605x/ac1555] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/16/2021] [Indexed: 12/12/2022]
Abstract
Biofunctionalization was investigated for polymers and metals considering their scarce integration ability. On the contrary few studies dealt with ceramic biofunctionalization because the bioactive and bioresorbable surfaces of ceramics are able to positively interact with biological environment. In this study the cell-response improvement on biofunctionalized wollastonite and diopside-based scaffolds was demonstrated. The ceramics were first obtained by heat treatment of a silicone embedding reactive oxide fillers and then biofunctionalized with adhesive peptides mapped on vitronectin. The most promisingin vitroresults, in terms of h-osteoblast proliferation and bone-related gene expression, were reached anchoring selectively a peptide stable toward proteolytic degradation induced by serum-enriched medium. Inin vivoassays the anchoring of this protease-stable adhesive peptide was combined with self-assembling peptides, for increasing cell viability and angiogenesis. The results demonstrated external and internal cell colonization of biofunctionalized scaffolds with formation of new blood vessels (neoangiogenesis) and stimulation of ectopic mineralization.
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Affiliation(s)
- Annj Zamuner
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, Padova 35131, Italy
| | - Paola Brun
- Department of Molecular Medicine, University of Padova, Via Gabelli 63, Padova 35127, Italy
| | - Roberta Ciccimarra
- Department of Veterinary Science, University of Parma, Via del Taglio 10, Parma 43126, Italy
| | - Francesca Ravanetti
- Department of Veterinary Science, University of Parma, Via del Taglio 10, Parma 43126, Italy
| | - Lorenzo Veschini
- Academic Centre of Reconstructive Sciences, King's College, Guy's Hospital, London SE1 9RT, United Kingdom
| | - Hamada Elsayed
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, Padova 35131, Italy.,Ceramics Department, National Research Centre, El-Bohous Street, Cairo 12622, Egypt
| | - Stefano Sivolella
- Department of Neurosciences, University of Padova, Via Nicolò Giustiniani, 5, Padova 35128, Italy
| | - Giovanna Iucci
- Department of Science, Roma Tre University of Rome, Via della Vasca Navale 79, 00146 Rome, Italy
| | - Andrea Porzionato
- Department of Neurosciences, University of Padova, Via Nicolò Giustiniani, 5, Padova 35128, Italy
| | - Lucy Di Silvio
- Centre for Oral Clinical and Translational Sciences, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom
| | - Antonio Cacchioli
- Department of Veterinary Science, University of Parma, Via del Taglio 10, Parma 43126, Italy
| | - Enrico Bernardo
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, Padova 35131, Italy
| | - Monica Dettin
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, Padova 35131, Italy
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Dal Sasso E, Zamuner A, Filippi A, Romanato F, Palmosi T, Vedovelli L, Gregori D, Gómez Ribelles JL, Russo T, Gloria A, Iop L, Gerosa G, Dettin M. Covalent functionalization of decellularized tissues accelerates endothelialization. Bioact Mater 2021; 6:3851-3864. [PMID: 33937589 PMCID: PMC8065253 DOI: 10.1016/j.bioactmat.2021.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 12/17/2022] Open
Abstract
In the field of tissue regeneration, the lack of a stable endothelial lining may affect the hemocompatibility of both synthetic and biological replacements. These drawbacks might be prevented by specific biomaterial functionalization to induce selective endothelial cell (EC) adhesion. Decellularized bovine pericardia and porcine aortas were selectively functionalized with a REDV tetrapeptide at 10−5 M and 10−6 M working concentrations. The scaffold-bound peptide was quantified and REDV potential EC adhesion enhancement was evaluated in vitro by static seeding of human umbilical vein ECs. The viable cells and MTS production were statistically higher in functionalized tissues than in control. Scaffold histoarchitecture, geometrical features, and mechanical properties were unaffected by peptide anchoring. The selective immobilization of REDV was effective in accelerating ECs adhesion while promoting proliferation in functionalized decellularized tissues intended for blood-contacting applications. Covalent functionalization of the decellularized tissues with REDV peptide accelerates endothelialization. New covalent grafting method not inducing collagen cross-linking. Measurements through two photon miscroscopy allow the quantification of biological matrix bound peptide. The decellularized tissues can be changed by chemical procedures to promote specific cellular behaviour with ECM preservation.
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Affiliation(s)
- Eleonora Dal Sasso
- Department of Cardiac, Thoracic and Vascular Sciences and Venetian Institute of Molecular Medicine, Padua, Italy
| | - Annj Zamuner
- Department of Industrial Engineering, University of Padua, Padua, Italy.,LIFELAB Program, Consorzio per la Ricerca Sanitaria, CORIS, Veneto Region, Italy
| | - Andrea Filippi
- LIFELAB Program, Consorzio per la Ricerca Sanitaria, CORIS, Veneto Region, Italy.,Department of Physics and Astronomy "G. Galilei", University of Padua, Padua, Italy.,Fondazione Bruno Kessler, Trento, Italy.,Institute of Pediatric Research Città della Speranza, Padua, Italy
| | - Filippo Romanato
- LIFELAB Program, Consorzio per la Ricerca Sanitaria, CORIS, Veneto Region, Italy.,Department of Physics and Astronomy "G. Galilei", University of Padua, Padua, Italy.,Institute of Pediatric Research Città della Speranza, Padua, Italy
| | - Tiziana Palmosi
- Department of Cardiac, Thoracic and Vascular Sciences and Venetian Institute of Molecular Medicine, Padua, Italy
| | - Luca Vedovelli
- Department of Cardiac, Thoracic and Vascular Sciences and Venetian Institute of Molecular Medicine, Padua, Italy
| | - Dario Gregori
- Department of Cardiac, Thoracic and Vascular Sciences and Venetian Institute of Molecular Medicine, Padua, Italy
| | - José Luís Gómez Ribelles
- Center for Biomaterials and Tissue Engineering, CBIT, Universitat Politècnica de València, València, Spain.,Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Valencia, Spain
| | - Teresa Russo
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Naples, Italy
| | - Antonio Gloria
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Naples, Italy
| | - Laura Iop
- Department of Cardiac, Thoracic and Vascular Sciences and Venetian Institute of Molecular Medicine, Padua, Italy.,LIFELAB Program, Consorzio per la Ricerca Sanitaria, CORIS, Veneto Region, Italy
| | - Gino Gerosa
- Department of Cardiac, Thoracic and Vascular Sciences and Venetian Institute of Molecular Medicine, Padua, Italy.,LIFELAB Program, Consorzio per la Ricerca Sanitaria, CORIS, Veneto Region, Italy
| | - Monica Dettin
- Department of Industrial Engineering, University of Padua, Padua, Italy.,LIFELAB Program, Consorzio per la Ricerca Sanitaria, CORIS, Veneto Region, Italy
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An in vitro assessment and comparative effectiveness of silanized-glutaraldehyde functionalized titanium surfaces with phosphatidylcholine and type I collagen grafts. Dent Mater 2019; 36:320-328. [PMID: 31864675 DOI: 10.1016/j.dental.2019.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 11/20/2022]
Abstract
OBJECTIVE This study aims to evaluate sequence-modified Ti surfaces functionalized with silanized glutaraldehyde and further grafted with the active biomolecules of phosphatidylcholine and type I collagen (COL I). METHODS The properties of the functional surfaces were investigated by various surface analysis techniques and characterized their capability in osteogenic cell attachment, differentiation, and mineralization in vitro. RESULTS The Ti surfaces grafted with phosphatidylcholine and COL I effectively improved the hydrophilicity. In addition, an effect of COL I concentrations (higher than 2.5μg/mL) do not stimulate subsequent alkaline phosphatase (ALP) activity during osteogenesis in vitro. However, the result is different in phosphatidylcholine, that is, as the concentration of phosphatidylcholine increased enhances subsequent osteogenetic properties. The Ti groups with bioactive molecules affected cell characteristics in vitro in contrast to the controlled Ti group. The proliferation and differentiation levels of osteoprogenetor cells were enhanced and ALP was strongly expressed in the groups grafted with phosphatidylcholine and COL I. SIGNIFICANCE This modification promotes progenitor bone cell adhesion, proliferation, and differentiation and thus drastically improves the success rate for implant modification by accelerating surface osseointegration.
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Liao J, Wu S, Li K, Fan Y, Dunne N, Li X. Peptide‐modified bone repair materials: Factors influencing osteogenic activity. J Biomed Mater Res A 2019; 107:1491-1512. [DOI: 10.1002/jbm.a.36663] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/29/2019] [Accepted: 02/14/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Jie Liao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
| | - Shuai Wu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
| | - Kun Li
- State Key Laboratory of Powder MetallurgyCentral South University Changsha 410083 China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
- Beijing Advanced Innovation Center for Biomedical EngineeringBeihang University Beijing 100083 China
| | - Nicholas Dunne
- Centre for Medical Engineering ResearchSchool of Mechanical and Manufacturing Engineering, Dublin City University Stokes Building, Collins Avenue, Dublin 9 Ireland
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of EducationSchool of Biological Science and Medical Engineering, Beihang University Beijing 100083 China
- Beijing Advanced Innovation Center for Biomedical EngineeringBeihang University Beijing 100083 China
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7
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Ravanetti F, Gazza F, D'Arrigo D, Graiani G, Zamuner A, Zedda M, Manfredi E, Dettin M, Cacchioli A. Enhancement of peri-implant bone osteogenic activity induced by a peptidomimetic functionalization of titanium. Ann Anat 2018; 218:165-174. [PMID: 29679720 DOI: 10.1016/j.aanat.2018.01.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/11/2018] [Accepted: 01/22/2018] [Indexed: 12/18/2022]
Abstract
Osteoblast cell adhesion to the extracellular matrix is established through two main pathways: one is mediated by the binding between integrin and a minimal adhesion sequence (RGD) on the extracellular protein, the other is based on the interactions between transmembrane proteoglycans and heparin-binding sequences found in many matrix proteins. The aim of this study is the evaluation in an in vivo endosseous implant model of the early osteogenic response of the peri-implant bone to a biomimetic titanium surface functionalized with the retro-inverso 2DHVP peptide, an analogue of Vitronectin heparin binding site. The experimental plan is based on a bilateral study design of Control and 2DHVP implants inserted respectively in the right and left femur distal metaphysis of adult male Wistar rats (n=16) weighing about 300grams and evaluated after 15days. Fluorochromic bone vital markers were given in a specific time frame, in order to monitor the dynamic of new bone deposition. The effect inducted by the peptidomimetic coating on the surrounding bone were qualitatively and quantitatively evaluated by means of static and dynamic histomorphometric analyses performed within three concentric and subsequent circular Regions of Interest (ROI) of equivalent thickness (220μm), ROI1 adjacent to the interface, ROI2, the middle, and ROI3 the farthest. The data indicated that these functionalized implants stimulated a higher bone apposition rate (p<0,01) and larger and rapid osteoblast activation in terms of mineralizing surface within ROI1 compared to the control (p<0,01). These higher osteoblast recruitment and activation leads to a greater bone-to-implant contact reached for DHVP samples (p<0,5). This represents an initial stimulus of the osteogenic activity that might results in a faster and better osteointegration process.
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Affiliation(s)
| | - F Gazza
- Dept. of Veterinary Sciences
| | | | - G Graiani
- Dept. of Medicine and Surgery, University of Parma
| | - A Zamuner
- Dept. of Industrial Engineering, University of Padova
| | - M Zedda
- Dept. of Veterinary Medicine, University of Sassari
| | - E Manfredi
- Dept. of Medicine and Surgery, University of Parma
| | - M Dettin
- Dept. of Industrial Engineering, University of Padova
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8
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Boden A, Bhave M, Wang PY, Jadhav S, Kingshott P. Binary Colloidal Crystal Layers as Platforms for Surface Patterning of Puroindoline-Based Antimicrobial Peptides. ACS APPLIED MATERIALS & INTERFACES 2018; 10:2264-2274. [PMID: 29281884 DOI: 10.1021/acsami.7b10392] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The ability of bacteria to form biofilms and the emergence of antibiotic-resistant strains have prompted the need to develop the next generation of antibacterial coatings. Antimicrobial peptides (AMPs) are showing promise as molecules that can address these issues, especially if used when immobilized as a surface coating. We present a method that explores how surface patterns together with the selective immobilization of an AMP called PuroA (FPVTWRWWKWWKG-NH2) can be used to both kill bacteria and also as a tool to study bacterial attachment mechanisms. Surface patterning is achieved using stabilized self-assembled binary colloidal crystal (BCC) layers, allowing selective PuroA immobilization to carboxylated particles using N-(3-dimethylaminopropyl)-N'-ethyl carbodiimide (EDC) hydrochloride/N-hydroxysuccinimide (NHS) coupling chemistry. Covalent immobilization of PuroA was compared with physical adsorption (i.e., without the addition of EDC/NHS). The AMP-functionalized colloids and BCC layers were characterized by X-ray photoelectron spectroscopy, ζ potentials, and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Surface antimicrobial activity was assessed by viability assays using Escherichia coli. MALDI-TOF MS analysis revealed that although not all of PuroA was successfully covalently immobilized, a relatively low density of PuroA (1.93 × 1013 molecules/cm2 and 7.14 × 1012 molecules/cm2 for covalent and physical immobilization, respectively) was found to be sufficient at significantly decreasing the viability of E. coli by 70% when compared to that of control samples. The findings provide a proof of concept that BCC layers are a suitable platform for the patterned immobilization of AMPs and the importance of ascertaining the success of small-molecule grafting reactions using surface-MALDI, something that is often assumed to be successful in the field.
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Affiliation(s)
- Andrew Boden
- Department of Chemistry and Biotechnology, School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn, 3122 VIC, Australia
| | - Mrinal Bhave
- Department of Chemistry and Biotechnology, School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn, 3122 VIC, Australia
| | - Peng-Yuan Wang
- Department of Chemistry and Biotechnology, School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn, 3122 VIC, Australia
| | - Snehal Jadhav
- Department of Chemistry and Biotechnology, School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn, 3122 VIC, Australia
| | - Peter Kingshott
- Department of Chemistry and Biotechnology, School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology , Hawthorn, 3122 VIC, Australia
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9
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Zamuner A, Brun P, Scorzeto M, Sica G, Castagliuolo I, Dettin M. Smart biomaterials: Surfaces functionalized with proteolytically stable osteoblast-adhesive peptides. Bioact Mater 2017; 2:121-130. [PMID: 29744421 PMCID: PMC5935176 DOI: 10.1016/j.bioactmat.2017.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/09/2017] [Accepted: 05/09/2017] [Indexed: 02/07/2023] Open
Abstract
Engineered scaffolds for bone tissue regeneration are designed to promote cell adhesion, growth, proliferation and differentiation. Recently, covalent and selective functionalization of glass and titanium surfaces with an adhesive peptide (HVP) mapped on [351-359] sequence of human Vitronectin allowed to selectively increase osteoblast attachment and adhesion strength in in vitro assays, and to promote osseointegration in in vivo studies. For the first time to our knowledge, in this study we investigated the resistance of adhesion sequences to proteolytic digestion: HVP was completely cleaved after 5 h. In order to overcome the enzymatic degradation of the native peptide under physiological conditions we synthetized three analogues of HVP sequence. A retro-inverted peptide D-2HVP, composed of D amino acids, was completely stable in serum-containing medium. In addition, glass surfaces functionalized with D-2HVP increased human osteoblast adhesion as compared to the native peptide and maintained deposition of calcium. Interestingly, D-2HVP increased expression of IBSP, VTN and SPP1 genes as compared to HVP functionalized surfaces. Total internal reflection fluorescence microscope analysis showed cells with numerous filopodia spread on D-2HVP-functionalized surfaces. Therefore, the D-2HVP sequence is proposed as new osteoblast adhesive peptide with increased bioactivity and high proteolytic resistance.
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Affiliation(s)
- Annj Zamuner
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 9, 35131, Padova, Italy
| | - Paola Brun
- Department of Molecular Medicine, University of Padova, Via A. Gabelli 63, 35121, Padova, Italy
| | - Michele Scorzeto
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy
| | - Giuseppe Sica
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 9, 35131, Padova, Italy
| | - Ignazio Castagliuolo
- Department of Molecular Medicine, University of Padova, Via A. Gabelli 63, 35121, Padova, Italy
| | - Monica Dettin
- Department of Industrial Engineering, University of Padova, Via F. Marzolo 9, 35131, Padova, Italy
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10
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Patel D, Sharma S, Bryant SJ, Screen HRC. Recapitulating the Micromechanical Behavior of Tension and Shear in a Biomimetic Hydrogel for Controlling Tenocyte Response. Adv Healthc Mater 2017; 6. [PMID: 28026126 PMCID: PMC5469035 DOI: 10.1002/adhm.201601095] [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: 09/26/2016] [Revised: 11/21/2016] [Indexed: 12/11/2022]
Abstract
A fiber composite system is presented which recapitulates the fiber-composite-like nature of tissues and generates similar modes of shear and tension. The shear/tension ratio can be customized during composite manufacture and incorporates viable cells. The system is a valuable tool for mechanotransduction research, providing a platform with physiologically relevant conditions for investigating cell behavior in different tissue types.
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Affiliation(s)
- Dharmesh Patel
- School of Engineering and Materials Science; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Sadhana Sharma
- Department of Chemical and Biological Engineering; University of Colorado Boulder; Boulder CO 80303 USA
| | - Stephanie J. Bryant
- Department of Chemical and Biological Engineering; Material Science and Engineering Program; BioFrontiers Institute; University of Colorado; Boulder CO 80303 USA
| | - Hazel R. C. Screen
- School of Engineering and Materials Science; Queen Mary University of London; Mile End Road London E1 4NS UK
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11
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Fraioli R, Dashnyam K, Kim JH, Perez RA, Kim HW, Gil J, Ginebra MP, Manero JM, Mas-Moruno C. Surface guidance of stem cell behavior: Chemically tailored co-presentation of integrin-binding peptides stimulates osteogenic differentiation in vitro and bone formation in vivo. Acta Biomater 2016; 43:269-281. [PMID: 27481289 DOI: 10.1016/j.actbio.2016.07.049] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 07/11/2016] [Accepted: 07/29/2016] [Indexed: 12/20/2022]
Abstract
UNLABELLED Surface modification stands out as a versatile technique to create instructive biomaterials that are able to actively direct stem cell fate. Chemical functionalization of titanium has been used in this work to stimulate the differentiation of human mesenchymal stem cells (hMSCs) into the osteoblastic lineage, by covalently anchoring a synthetic double-branched molecule (PTF) to the metal that allows a finely controlled presentation of peptidic motifs. In detail, the effect of the RGD adhesive peptide and its synergy motif PHSRN is studied, comparing a random distribution of the two peptides with the chemically-tailored disposition within the custom made synthetic platform, which mimics the interspacing between the motifs observed in fibronectin. Contact angle measurement and XPS analysis are used to prove the efficiency of functionalization. We demonstrate that, by rationally designing ligands, stem cell response can be efficiently guided towards the osteogenic phenotype: In vitro, PTF-functionalized surfaces support hMSCs adhesion, with higher cell area and formation of focal contacts, expression of the integrin receptor α5β1 and the osteogenic marker Runx2, and deposition a highly mineralized matrix, reaching values of mineralization comparable to fibronectin. Our strategy is also demonstrated to be efficient in promoting new bone growth in vivo in a rat calvarial defect. These results highlight the efficacy of chemical control over the presentation of bioactive peptides; such systems may be used to engineer bioactive surfaces with improved osseointegrative properties, or can be easily tuned to generate multi-functional coatings requiring a tailored disposition of the peptidic motifs. STATEMENT OF SIGNIFICANCE Organic coatings have been proposed as a solution to foster osseointegration of orthopedic implants. Among them, extracellular matrix-derived peptide motifs are an interesting biomimetic strategy to harness cell-surface interactions. Nonetheless, the combination of multiple peptide motifs in a controlled manner is essential to achieve receptor specificity and fully exploit the potentiality of synthetic peptides. Herein, we covalently graft to titanium a double branched molecule to guide stem cell fate in vitro and generate an osseoinductive titanium surface in vivo. Such synthetic ligand allows for the simultaneous presentation of two bioactive motifs, thus is ideal to test the effect of synergic sequences, such as RGD and PHSRN, and is a clear example of the versatility and feasibility of rationally designed biomolecules.
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12
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Lou W, Dong Y, Zhang H, Jin Y, Hu X, Ma J, Liu J, Wu G. Preparation and Characterization of Lanthanum-Incorporated Hydroxyapatite Coatings on Titanium Substrates. Int J Mol Sci 2015; 16:21070-86. [PMID: 26404255 PMCID: PMC4613242 DOI: 10.3390/ijms160921070] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/24/2015] [Accepted: 08/25/2015] [Indexed: 11/16/2022] Open
Abstract
Titanium (Ti) has been widely used in clinical applications for its excellent biocompatibility and mechanical properties. However, the bioinertness of the surface of Ti has motivated researchers to improve the physicochemical and biological properties of the implants through various surface modifications, such as coatings. For this purpose, we prepared a novel bioactive material, a lanthanum-incorporated hydroxyapatite (La-HA) coating, using a dip-coating technique with a La-HA sol along with post-heat treatment. The XRD, FTIR and EDX results presented in this paper confirmed that lanthanum was successfully incorporated into the structure of HA. The La-HA coating was composed of rod-like particles which densely compacted together without microcracks. The results of the interfacial shear strength test indicated that the incorporation of lanthanum increased the bonding strength of the HA coating. The mass loss ratios under acidic conditions (pH=5.5) suggested that the La-HA coatings have better acid resistance. The cytocompatibility of the La-HA coating was also revealed by the relative activity of alkaline phosphatase, cellular morphology and cell proliferation assay in vitro. The present study suggested that La-HA coated on Ti has promising potential for applications in the development of a new type of bioactive coating for metal implants.
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Affiliation(s)
- Weiwei Lou
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
- Department of Prosthetic Dentistry, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310006, China.
| | - Yiwen Dong
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
| | - Hualin Zhang
- Department of Prosthetic Dentistry, College of Stomatology, Ningxia Medical University, Yinchuan 750004, China.
| | - Yifan Jin
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
| | - Xiaohui Hu
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
| | - Jianfeng Ma
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
| | - Jinsong Liu
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Research Institute MOVE, VU University and University of Amsterdam, Amsterdam 1081 HV, The Netherlands.
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Chen WC, Lo Y, Chen HS. Effects of Ti surface treatments with silane and arginylglycylaspartic acid peptide on bone cell progenitors. Odontology 2014; 103:322-32. [DOI: 10.1007/s10266-014-0169-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Accepted: 05/20/2014] [Indexed: 10/24/2022]
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14
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Dettin M, Zamuner A, Iucci G, Messina GML, Battocchio C, Picariello G, Gallina G, Marletta G, Castagliuolo I, Brun P. Driving h-osteoblast adhesion and proliferation on titania: peptide hydrogels decorated with growth factors and adhesive conjugates. J Pept Sci 2014; 20:585-94. [DOI: 10.1002/psc.2652] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/17/2014] [Accepted: 04/17/2014] [Indexed: 11/07/2022]
Affiliation(s)
- M. Dettin
- Department of Industrial Engineering; University of Padua; Padua 35131 Italy
| | - A. Zamuner
- Department of Industrial Engineering; University of Padua; Padua 35131 Italy
| | - G. Iucci
- Department of Physics; University ‘Roma Tre’; Rome 00146 Italy
| | - G. M. L. Messina
- Department of Chemistry; University of Catania; Catania 95125 Italy
| | - C. Battocchio
- Department of Physics; University ‘Roma Tre’; Rome 00146 Italy
| | - G. Picariello
- Institute of Food Sciences; CNR; Avellino 83100 Italy
| | - G. Gallina
- Department of Industrial Engineering; University of Padua; Padua 35131 Italy
| | - G. Marletta
- Department of Chemistry; University of Catania; Catania 95125 Italy
| | - I. Castagliuolo
- Department of Molecular Medicine; University of Padua; Padua 35121 Italy
| | - P. Brun
- Department of Molecular Medicine; University of Padua; Padua 35121 Italy
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SUZUKI T, HAYAKAWA T, KAWAMOTO T, GOMI K. Bone response of TGF-β2 immobilized titanium in a rat model. Dent Mater J 2014; 33:233-41. [DOI: 10.4012/dmj.2014-006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Brun P, Scorzeto M, Vassanelli S, Castagliuolo I, Palù G, Ghezzo F, Messina GM, Iucci G, Battaglia V, Sivolella S, Bagno A, Polzonetti G, Marletta G, Dettin M. Mechanisms underlying the attachment and spreading of human osteoblasts: from transient interactions to focal adhesions on vitronectin-grafted bioactive surfaces. Acta Biomater 2013; 9:6105-15. [PMID: 23261922 DOI: 10.1016/j.actbio.2012.12.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 12/06/2012] [Accepted: 12/11/2012] [Indexed: 10/27/2022]
Abstract
The features of implant devices and the reactions of bone-derived cells to foreign surfaces determine implant success during osseointegration. In an attempt to better understand the mechanisms underlying osteoblasts attachment and spreading, in this study adhesive peptides containing the fibronectin sequence motif for integrin binding (Arg-Gly-Asp, RGD) or mapping the human vitronectin protein (HVP) were grafted on glass and titanium surfaces with or without chemically induced controlled immobilization. As shown by total internal reflection fluorescence microscopy, human osteoblasts develop adhesion patches only on specifically immobilized peptides. Indeed, cells quickly develop focal adhesions on RGD-grafted surfaces, while HVP peptide promotes filopodia, structures involved in cellular spreading. As indicated by immunocytochemistry and quantitative polymerase chain reaction, focal adhesions kinase activation is delayed on HVP peptides with respect to RGD while an osteogenic phenotypic response appears within 24h on osteoblasts cultured on both peptides. Cellular pathways underlying osteoblasts attachment are, however, different. As demonstrated by adhesion blocking assays, integrins are mainly involved in osteoblast adhesion to RGD peptide, while HVP selects osteoblasts for attachment through proteoglycan-mediated interactions. Thus an interfacial layer of an endosseous device grafted with specifically immobilized HVP peptide not only selects the attachment and supports differentiation of osteoblasts but also promotes cellular migration.
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Li D, Lu X, Lin H, Ren F, Leng Y. Chitosan/bovine serum albumin co-micropatterns on functionalized titanium surfaces and their effects on osteoblasts. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:489-502. [PMID: 23132401 DOI: 10.1007/s10856-012-4810-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 10/31/2012] [Indexed: 06/01/2023]
Abstract
Chitosan (CS)/bovine serum albumin (BSA) micropatterns were prepared on functionalized Ti surfaces by micro-transfer molding (μ-TM). μ-TM realized the spatially controlled immobilization of cells and offered a new way of studying the interaction between micropatterns and cells. Two kinds of micropatterns were produced: (1) microgrooves representing a discontinuously grooved co-micropattern, with the rectangular CS region separated by BSA walls; (2) microcylinders representing a continuously interconnected co-micropattern, with the net-like CS region separated by BSA cylinders. A comparison of cell behaviors on the two types of micropatterns indicated that the shape rather than the size had a dominant effect on cell proliferation. The micropattern size in the same range of cell diameters favored cell proliferation. However, cell differentiation was more sensitive to the size rather than to the shape of the micropatterns. In conclusion, cell behavior can be regulated by micropatterns integrating different materials.
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Affiliation(s)
- Dan Li
- Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
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MC3T3-E1 Cells on Titanium Surfaces with Nanometer Smoothness and Fibronectin Immobilization. Int J Biomater 2012; 2012:743465. [PMID: 22675359 PMCID: PMC3364553 DOI: 10.1155/2012/743465] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 03/24/2012] [Indexed: 11/23/2022] Open
Abstract
The present study was aimed to evaluate the viability and total protein contents of osteoblast-like cells on the titanium surface with different surface mechanical treatment, namely, nanometer smoothing (Ra: approximately 2.0 nm) and sandblasting (Ra: approximately 1.0 μm), and biochemical treatment, namely, with or without fibronectin immobilization. Fibronectin could be easily immobilized by tresyl chloride-activation technique. MC3T3-E1 cells were seeded on the different titanium surfaces. Cell viability was determined by MTT assay. At 1 day of cell culture, there were no significant differences in cell viability among four different titanium surfaces. At 11 days, sandblasted titanium surface with fibronectin immobilization showed the significantly highest cell viability than other titanium surface. No significant differences existed for total protein contents among four different titanium surfaces at 11 days of cell culture. Scanning electron microscopy observation revealed that smoothness of titanium surface produced more spread cell morphologies, but that fibronectin immobilization did not cause any changes of the morphologies of attached cells. Fibronectin immobilization provided greater amount of the number of attached cells and better arrangement of attached cells. In conclusion, the combination of sandblasting and fibronectin immobilization enhanced the cell viability and fibronectin immobilization providing better arrangements of attached cells.
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19
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Yoshida E, Yoshimura Y, Uo M, Yoshinari M, Hayakawa T. Influence of nanometer smoothness and fibronectin immobilization of titanium surface on MC3T3-E1 cell behavior. J Biomed Mater Res A 2012; 100:1556-64. [PMID: 22447768 DOI: 10.1002/jbm.a.34084] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 01/10/2012] [Indexed: 11/11/2022]
Abstract
The aim of the present study was to evaluate the influence of mechanical treatment, namely, nanometer smoothing (Ra: approximately 2.0 nm) and sandblasting (Ra: approximately 1.0 μm), as well as biochemical treatment, namely, fibronectin immobilization, of a titanium surface on osteoblast-like cell behavior. Cell proliferation was monitored by measurements of DNA content and ALP activity; osteocalcin production and mineralization behavior were also evaluated, in addition to morphological observation of attached cells. Fibronectin could be immobilized by the tresyl chloride-activation method. A sandblasted surface resulted in significantly more DNA than a nanometer-smooth surface, but fibronectin immobilization did not result in a significant increase of DNA at 52 days of cell culture. The nanometer-smooth surface showed highest ALP activity and osteocalcin production. FN immobilization decreased ALP activity for the nanometer-smooth surface, but increased it for the sandblasted surface. The nanometer-smooth surface also showed the highest osteocalcin production. Scanning electron microscopy showed interesting phenomena of the attached cells. Attached cell area was more rapidly increased on the nanometer-smooth surface than on the sandblasted surface. It was suggested that cultured cells on the nanometer-smooth surface began to spread earlier and that the proportion of spreading cells among total attached cells increased sooner on the nanometer-smooth surface than on the sandblasted rough surface. It appeared that FN immobilization influenced the arrangement of attached cells. In conclusion, the nanometer-smooth surface employed in the present study was beneficial for the differentiation of MC3T3-E1 cells. FN immobilization influenced the morphologies of attached cells.
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Affiliation(s)
- Eiji Yoshida
- Department of Dental Engineering, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-Ku, Yokohama 230-8501, Japan.
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20
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Sverzut AT, Crippa GE, Morra M, de Oliveira PT, Beloti MM, Rosa AL. Effects of type I collagen coating on titanium osseointegration: histomorphometric, cellular and molecular analyses. Biomed Mater 2012; 7:035007. [PMID: 22406648 DOI: 10.1088/1748-6041/7/3/035007] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The investigation of titanium (Ti) surface modifications aiming to increase implant osseointegration is one of the most active research areas in dental implantology. This study was carried out to evaluate the benefits of coating Ti with type I collagen on the osseointegration of dental implants. Acid etched Ti implants (AETi), either untreated or coated with type I collagen (ColTi), were placed in dog mandibles for three and eight weeks for histomorphometric, cellular and molecular evaluations of bone tissue response. While the histological aspects were essentially the same with both implants being surrounded by lamellar bone trabeculae, histomorphometric analysis showed more abundant bone formation in ColTi, mainly at three weeks. Cellular evaluation showed that cells harvested from bone fragments in close contact with ColTi display lower proliferative capacity and higher alkaline phosphatase activity, phenotypic features associated with more differentiated osteoblasts. Confirming these findings, molecular analyses showed that ColTi implants up-regulates the expression of a panel of genes well known as osteoblast markers. Our results present a set of evidences that coating AETi with collagen fastens the osseointegration by stimulating bone formation at the cellular and molecular levels, making this combination of morphological and biochemical modification a promising approach to treat Ti surfaces.
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Affiliation(s)
- Alexander Tadeu Sverzut
- Cell Culture Laboratory, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
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Li XQ, Feng Z, Xia Y, Zeng HC. Protein-Assisted Synthesis of Double-Shelled CaCO3 Microcapsules and Their Mineralization with Heavy Metal Ions. Chemistry 2012; 18:1945-52. [DOI: 10.1002/chem.201102877] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Indexed: 11/06/2022]
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Cenni E, Scioscia L, Baldini N. Orthopaedic research in italy: state of the art. Int J Immunopathol Pharmacol 2011; 24:157-78. [PMID: 21669157 DOI: 10.1177/03946320110241s230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The most significant results in experimental and clinical orthopaedic research in Italy within the last three years have been primarily in major congenital diseases, bone tumors, regenerative medicine, joint replacements, spine, tendons and ligaments. The data presented in the following discussion is comparable with leading international results, highlighting Italian orthopaedic research excellemce as well as its shortcomings.
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Affiliation(s)
- E Cenni
- Istituto Ortopedico Rizzoli, Bologna, Italy
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23
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Iucci G, Ghezzo F, Danesin R, Modesti M, Dettin M. Biomimetic peptide-enriched electrospun polymers: A photoelectron and infrared spectroscopy study. J Appl Polym Sci 2011. [DOI: 10.1002/app.34768] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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