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Porgham Daryasari M, Dusti Telgerd M, Hossein Karami M, Zandi-Karimi A, Akbarijavar H, Khoobi M, Seyedjafari E, Birhanu G, Khosravian P, SadatMahdavi F. Poly-l-lactic acid scaffold incorporated chitosan-coated mesoporous silica nanoparticles as pH-sensitive composite for enhanced osteogenic differentiation of human adipose tissue stem cells by dexamethasone delivery. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2020; 47:4020-4029. [PMID: 31595797 DOI: 10.1080/21691401.2019.1658594] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Nowadays, the development of drug-loaded electrospun organic-inorganic composite scaffolds for tissue engineering application is an attractive approach. In this study, a composite scaffold of Poly-l-lactic acid (PLLA) incorporated dexamethasone (Dexa) loaded Mesoporous Silica Nanoparticles (MSN) coated with Chitosan (CS) were fabricated by electrospinning for bone tissue engineering application. The MSN was prepared by precipitation method. After that, Dexamethasone (Dexa) was loaded into MSNs (MSN-Dexa). In the following, CS was coated over the prepared nanoparticles to form MSN-Dexa@CS and then, were mixed to PLLA solution to form MSN-Dexa@CS/PLLA composite for electrospinning. The surface morphology, hydrophilicity, tensile strength and the bioactivity of the scaffolds were characterized. The osteogenic proliferation and differentiation potential were evaluated by MTT assay and by measuring the basic osteogenic markers: the activity of the enzyme alkaline phosphatase and the level of calcium deposition. The composite scaffolds prepared here have conductive surface property and have a better osteogenic potential than pure PLLA scaffolds. Hence, the controlled release of nanoparticle containing Dexa from composite scaffold supported the osteogenesis and made the composite scaffolds ideal candidates for bone tissue engineering application and pH-sensitive delivery of drugs at the site of implantation in tissue regeneration.
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Affiliation(s)
- Mohammad Porgham Daryasari
- Department of Pharmaceutical Biomaterials, Faculty of Pharmacy, Tehran University of Medical Sciences , Tehran , Iran.,Biomaterials Group, the Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences , Tehran , Iran
| | - Mehdi Dusti Telgerd
- Department of Pharmaceutical Biomaterials, Faculty of Pharmacy, Tehran University of Medical Sciences , Tehran , Iran
| | | | - Ali Zandi-Karimi
- Department of Biotechnology, College of Science, University of Tehran , Tehran , Iran
| | - Hamid Akbarijavar
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences , Tehran , Iran
| | - Mehdi Khoobi
- Biomaterials Group, the Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences , Tehran , Iran.,Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center (MBRC), Faculty of Pharmacy, Tehran University of Medical Sciences , Tehran , Iran
| | - Ehsan Seyedjafari
- Department of Biotechnology, College of Science, University of Tehran , Tehran , Iran
| | - Gebremariam Birhanu
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, International campus (TUMS-IC) , Tehran , Iran.,School of Pharmacy, College of Health Sciences, Addis Ababa University , Addis Ababa , Ethiopia
| | - Pegah Khosravian
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences , Shahrekord , Iran
| | - Fatemeh SadatMahdavi
- Department of Animal and Poultry Science, College of Aburaihan, University of Tehran , Pakdasht, Tehran , Iran
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Birhanu G, Tanha S, Akbari Javar H, Seyedjafari E, Zandi-Karimi A, Kiani Dehkordi B. Dexamethasone loaded multi-layer poly-l-lactic acid/pluronic P123 composite electrospun nanofiber scaffolds for bone tissue engineering and drug delivery. Pharm Dev Technol 2018; 24:338-347. [PMID: 29799305 DOI: 10.1080/10837450.2018.1481429] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
In tissue engineering, it is common to mix drugs that can control proliferation and differentiation of cells into polymeric solutions as part of composite to get bioactive scaffolds. However, direct incorporation of drugs might potentially result in undesired burst release. To overcome this problem, here we developed electrospun multilayer drug loaded poly-l-lactic acid/pluronic P123 (PLLA-P123) composite scaffolds. The drug was loaded into the middle layer. The surface, the mechanical and physiochemical properties of the scaffolds were evaluated. The drug release profiles were monitored. Finally, the osteogenic proliferation and differentiation potential were determined. The scaffolds fabricated here have appropriate surface properties, but with different mechanical strength and osteogenic proliferation and differentiation. Multi-layer scaffolds where the drug was in the middle layer and PLLA-plasma and PLLA-P123 with cover layer showed the best osteogenic proliferation and differentiation than the other groups of scaffolds. The drug release profiles of the scaffolds were completely different: single layer scaffolds showed burst release within the first day, while multilayer scaffolds showed controlled release. Therefore, the multilayer drug loaded scaffolds prepared have dual benefits can provide both better osteogenesis and controlled release of drugs and bioactive molecules at the implant site.
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Affiliation(s)
- Gebremariam Birhanu
- a Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences, International Campus (TUMS-IC) , Tehran , Iran.,b School of Pharmacy, College of Health Sciences , Addis Ababa University , Addis Ababa , Ethiopia
| | - Shima Tanha
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Hamid Akbari Javar
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Ehsan Seyedjafari
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Ali Zandi-Karimi
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Banafsheh Kiani Dehkordi
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
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Birhanu G, Akbari Javar H, Seyedjafari E, Zandi-Karimi A, Dusti Telgerd M. An improved surface for enhanced stem cell proliferation and osteogenic differentiation using electrospun composite PLLA/P123 scaffold. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:1274-1281. [PMID: 28835133 DOI: 10.1080/21691401.2017.1367928] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Poly-L-lactic acid (PLLA) nano fibrous scaffolds prepared by electrospinning technology have been used widely in tissue engineering applications. However, PLLA scaffolds are hydrophobic in nature, moreover the fibrous porous structure produced by electrospinning makes the scaffolds even more hydrophobic which generally limits cell attachment and proliferation. Polymer blending is one of the several efforts used so far to enhance hydrophilicity and recognized as an easy cost-effective approach for the manipulation physiochemical properties of polymeric biomaterials. Pluronic block copolymers containing hydrophilic poly(ethylene oxide) (PEO) blocks and hydrophobic poly(propylene oxide) (PPO) blocks are arranged in triblock structure: PEO-PPO-PEO. It is commonly used recently to blend hydrophobic polymers to enhance hydrophilicity for pharmaceutical and tissue engineering applications. In this study, novel pluronic P123 blend PLLA electrospun nanofibre scaffolds with improved hydrophilicity and biological properties were fabricated. The surface morphology and surface chemistry of the nanofibre scaffolds were characterized by scanning electron microscope (SEM) and FTIR analyses. Surface hydrophilicity and change in mechanical properties were studied. The ability of the scaffolds to support the attachment, and proliferation and differentiation of human adipose tissue derived MSCs, were evaluated generally. The fabricated scaffolds have completely improved, hydrophilicity, similar osteogenic differentiation potential with plasma-treated PLLA nanofibre scaffold, and hence P123 blend PLLA electrospun nanofibre scaffolds are a very good and cost effective choice as a scaffold for bone tissue engineering application.
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Affiliation(s)
- Gebremariam Birhanu
- a Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences, International Campus (TUMS-IC) , Tehran , Iran.,b School of Pharmacy, College of Health Sciences , Addis Ababa University , Addis Ababa , Ethiopia
| | - Hamid Akbari Javar
- c Department of Pharmaceutics, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
| | - Ehsan Seyedjafari
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Ali Zandi-Karimi
- d Department of Biotechnology, College of Science , University of Tehran , Tehran , Iran
| | - Mehdi Dusti Telgerd
- e Department of Pharmaceutical Biomaterials, Faculty of Pharmacy , Tehran University of Medical Sciences , Tehran , Iran
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Kurusu RS, Demarquette NR. Blending and Morphology Control To Turn Hydrophobic SEBS Electrospun Mats Superhydrophilic. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5495-503. [PMID: 25913789 DOI: 10.1021/acs.langmuir.5b00814] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Thermoplastic elastomer SEBS, a triblock copolymer composed of styrene (S) and ethylene-co-butylene (EB) blocks, can be dissolved and processed by electrospinning to produce flexible nonwoven mats that can be interesting for applications like filtration or separation membranes. Controlling surface properties such as hydrophobicity/hydrophilicity is critical to achieving a desired performance. In this study, hydrophobic electrospun SEBS mats were obtained, following which an amphiphilic molecule (Pluronic F127) was solution-blended with SEBS prior to electrospinning, in a bid to produce a hydrophilic membrane. The result was a fast-spreading superhydrophilic mat with thinner fibers that preserved the flexibility of the SEBS. The morphologies of nonwoven mats, flat films (prepared by dip-coating using identical solutions) and of the surface of individual fibers were characterized using different microscopy techniques (optical, scanning electron microscopy and atomic force microscopy). Chemical analysis by X-ray photoelectron spectroscopy (XPS) revealed a large F127 concentration in the outermost surface layer. In addition, an analysis of dip-coated flat films revealed that for 20 wt % of F127, there was a change in the blend morphology from dispersed F127-rich regions in the SEBS matrix to an interconnected phase homogeneously distributed across the film that resembled grain boundaries of micellar crystals. Our results indicated that this morphology change at 20 wt % of F127 also occurred to some extent in the electrospun fibers and this, combined with the large surface area of the mats, led to a drastic reduction in the contact angle and fast water absorption, turning hydrophobic electrospun mats superhydrophilic.
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Affiliation(s)
- Rafael S Kurusu
- Mechanical Engineering Department, École de Technologie Supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
| | - Nicole R Demarquette
- Mechanical Engineering Department, École de Technologie Supérieure - ÉTS, 1100 Notre-Dame Street West, Montréal, Québec H3C 1K3, Canada
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