1
|
Ashfaq R, Kovács A, Berkó S, Budai-Szűcs M. Developments in Alloplastic Bone Grafts and Barrier Membrane Biomaterials for Periodontal Guided Tissue and Bone Regeneration Therapy. Int J Mol Sci 2024; 25:7746. [PMID: 39062989 PMCID: PMC11277074 DOI: 10.3390/ijms25147746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/04/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
Periodontitis is a serious form of oral gum inflammation with recession of gingival soft tissue, destruction of the periodontal ligament, and absorption of alveolar bone. Management of periodontal tissue and bone destruction, along with the restoration of functionality and structural integrity, is not possible with conventional clinical therapy alone. Guided bone and tissue regeneration therapy employs an occlusive biodegradable barrier membrane and graft biomaterials to guide the formation of alveolar bone and tissues for periodontal restoration and regeneration. Amongst several grafting approaches, alloplastic grafts/biomaterials, either derived from natural sources, synthesization, or a combination of both, offer a wide variety of resources tailored to multiple needs. Examining several pertinent scientific databases (Web of Science, Scopus, PubMed, MEDLINE, and Cochrane Library) provided the foundation to cover the literature on synthetic graft materials and membranes, devoted to achieving periodontal tissue and bone regeneration. This discussion proceeds by highlighting potential grafting and barrier biomaterials, their characteristics, efficiency, regenerative ability, therapy outcomes, and advancements in periodontal guided regeneration therapy. Marketed and standardized quality products made of grafts and membrane biomaterials have been documented in this work. Conclusively, this paper illustrates the challenges, risk factors, and combination of biomaterials and drug delivery systems with which to reconstruct the hierarchical periodontium.
Collapse
Affiliation(s)
| | | | | | - Mária Budai-Szűcs
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary; (R.A.); (A.K.); (S.B.)
| |
Collapse
|
2
|
Kołodziejska B, Figat R, Kolmas J. Biomimetic Apatite/Natural Polymer Composite Granules as Multifunctional Dental Tissue Regenerative Material. Int J Mol Sci 2023; 24:16751. [PMID: 38069072 PMCID: PMC10706555 DOI: 10.3390/ijms242316751] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/22/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
This study presents a comprehensive evaluation of novel composite biomaterials designed for dental applications, aiming to potentially address the prevalent challenge of dental and periodontal tissue loss. The composites consisted of biomimetic hydroxyapatite (mHA) enriched with Mg2+, CO32-, and Zn2+ ions, type I collagen, alginate, and, additionally, chitosan and sericin. The granules were loaded with ibuprofen sodium salt. The investigation encompassed a morphology characterization, a porosity analysis, a chemical structure assessment, and an examination of the swelling behavior, drug release kinetics (ibuprofen), and release profiles of zinc and magnesium ions. The granules exhibited irregular surfaces with an enhanced homogeneity in the chitosan-coated granules and well-developed mesoporous structures. The FT-IR spectra confirmed the presence of ibuprofen sodium, despite overlapping bands for the polymers. The granules demonstrated a high water-absorption capacity, with delayed swelling observed in the chitosan-coated granules. Ibuprofen displayed burst-release profiles, especially in the G1 and G3 samples. In the case of the chitosan-coated granules (G2 and G4), lower amounts of ibuprofen were released. In turn, there was a significant difference in the released amount of magnesium and zinc ions from the granules, which was most likely caused by their different location in the hydroxyapatite crystals. The cytotoxicity assays confirmed the non-cytotoxic behavior of the biomaterial. These findings suggest the potential applicability of these biomaterials in dental scenarios, emphasizing their multifunctional and biocompatible nature.
Collapse
Affiliation(s)
- Barbara Kołodziejska
- Department of Pharmaceutical Chemistry and Biomaterials, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097 Warsaw, Poland;
| | - Ramona Figat
- Department of Toxicology and Bromatology, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097 Warsaw, Poland;
| | - Joanna Kolmas
- Department of Pharmaceutical Chemistry and Biomaterials, Faculty of Pharmacy, Medical University of Warsaw, ul. Banacha 1, 02-097 Warsaw, Poland;
| |
Collapse
|
3
|
Qian G, Xiong L, Ye Q. Hydroxyapatite-based carriers for tumor targeting therapy. RSC Adv 2023; 13:16512-16528. [PMID: 37274393 PMCID: PMC10234259 DOI: 10.1039/d3ra01476b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/18/2023] [Indexed: 06/06/2023] Open
Abstract
At present, targeted drug delivery is regarded as the most effective means of tumor treatment, overcoming the lack of conventional chemotherapeutics that are difficult to reach or enter into cancer cells. Hydroxyapatite (HAP) is the main component of biological hard tissue, which can be regarded as a suitable drug carrier due to its biocompatibility, nontoxicity, biodegradation, and absorbability. This review focuses on the cutting edge of HAP as a drug carrier in targeted drug delivery systems. HAP-based carriers can be obtained by doping, modification, and combination, which benefit to improve the loading efficiency of drugs and the response sensitivity of the microenvironment in the synthesis process. The drug adsorbed or in situ loaded on HAP-based carriers can achieve targeted drug delivery and precise treatment through the guidance of the in vivo microenvironment and the stimulation of the in vitro response. In addition, HAP-based drug carriers can improve the cellular uptake rate of drugs to achieve a higher treatment effect. These advantages revealed the promising potential of HAP-based carriers from the perspective of targeted drug delivery for tumor treatment.
Collapse
Affiliation(s)
- Gongming Qian
- College of Resource and Environmental Engineering, Wuhan University of Science & Technology Wuhan 430081 China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology Wuhan 430081 China
| | - Lingya Xiong
- College of Resource and Environmental Engineering, Wuhan University of Science & Technology Wuhan 430081 China
| | - Qing Ye
- College of Resource and Environmental Engineering, Wuhan University of Science & Technology Wuhan 430081 China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology Wuhan 430081 China
| |
Collapse
|
4
|
Zhang Y, Fang M, Tan Z, Zhang YA, Huang CY, Lu L, Tian J, Li L, Zhou C. Fabrication of an Injectable Star-polylactide/Thiolated Hyaluronate Hydrogel as a Double Drug-Delivery System for Cancer Treatment. ACS OMEGA 2023; 8:16789-16799. [PMID: 37214691 PMCID: PMC10193562 DOI: 10.1021/acsomega.3c00270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/20/2023] [Indexed: 05/24/2023]
Abstract
Unsatisfactory solid-tumor penetration or rapid metabolism of nanomaterials limits their therapeutic efficacy. Here, we designed an injectable thiolated hyaluronate (HA-SH) hydrogel as a stable drug-releasing platform for in situ tumor treatment. Biodegradable star-shaped polylactide (S-PLLA) was first synthesized and fabricated to porous microspheres to encapsulate hydrophobic curcumin (Cur@S-PLLA), which was then blended with hydrophilic doxorubicin (Dox) and the HA-SH precursor to form composite in situ formable hydrogels [Cur@S-PLLA/(Dox)HA-SH]. The results showed that adding the microspheres improved the performance of the hydrogel, such as decreasing the gelation time from 1080 s to 960 s and also the swelling ratio. The mechanical strength increased from 27 to 45 kPa. In addition, the double drug system guaranteed a sustained release of drugs, releasing Dox at the early stage, with the continuous later release of Cur after gel swelling or S-PLLA degradation to achieve long-lasting tumor suppression, which inhibits the survival of cancer cells. The inhibitory effects of the hydrogels on MCF-7 were studied. The cell activity in the double-loaded hydrogel was significantly lower than that of the control groups, and apparent dead cells appeared in 2 days and fewer living cells with time. Flow cytometry revealed that the Cur@S-PLLA/(Dox)HA-SH group had the highest apoptosis ratio of 86.60% at 12 h, and the drugs caused the cell cycle to be blocked in phase M to reduce cell division. In summary, the innovative release platform is expected to be used in long-lasting tumor suppression and provides more ideas for the design of drug carriers.
Collapse
Affiliation(s)
- Yifan Zhang
- Department
of Materials Science and Engineering, Engineering Research Center
of Artificial Organs and Materials, Jinan
University, Guangzhou 511486, China
| | - Min Fang
- Department
of Materials Science and Engineering, Engineering Research Center
of Artificial Organs and Materials, Jinan
University, Guangzhou 511486, China
| | - Zhiyi Tan
- Guangzhou
Customs District Technology Center, Tower B, No.66 Huacheng Avenue, Zhujiang Xincheng,
Tianhe District, Guangzhou 510623, Guangdong, China
| | - Yu-ang Zhang
- Department
of Materials Science and Engineering, Engineering Research Center
of Artificial Organs and Materials, Jinan
University, Guangzhou 511486, China
| | - Chun-yu Huang
- Department
of Endoscopy, Sun Yat-Sen University Cancer
Center, Guangzhou 510060, P. R. China
| | - Lu Lu
- Department
of Materials Science and Engineering, Engineering Research Center
of Artificial Organs and Materials, Jinan
University, Guangzhou 511486, China
| | - Jinhuan Tian
- Department
of Materials Science and Engineering, Engineering Research Center
of Artificial Organs and Materials, Jinan
University, Guangzhou 511486, China
| | - Lihua Li
- Department
of Materials Science and Engineering, Engineering Research Center
of Artificial Organs and Materials, Jinan
University, Guangzhou 511486, China
| | - Changren Zhou
- Department
of Materials Science and Engineering, Engineering Research Center
of Artificial Organs and Materials, Jinan
University, Guangzhou 511486, China
| |
Collapse
|
5
|
Dorozhkin SV. Calcium Orthophosphate (CaPO4)-Based Bioceramics: Preparation, Properties, and Applications. COATINGS 2022; 12:1380. [DOI: 10.3390/coatings12101380] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Various types of materials have been traditionally used to restore damaged bones. In the late 1960s, a strong interest was raised in studying ceramics as potential bone grafts due to their biomechanical properties. A short time later, such synthetic biomaterials were called bioceramics. Bioceramics can be prepared from diverse inorganic substances, but this review is limited to calcium orthophosphate (CaPO4)-based formulations only, due to its chemical similarity to mammalian bones and teeth. During the past 50 years, there have been a number of important achievements in this field. Namely, after the initial development of bioceramics that was just tolerated in the physiological environment, an emphasis was shifted towards the formulations able to form direct chemical bonds with the adjacent bones. Afterwards, by the structural and compositional controls, it became possible to choose whether the CaPO4-based implants would remain biologically stable once incorporated into the skeletal structure or whether they would be resorbed over time. At the turn of the millennium, a new concept of regenerative bioceramics was developed, and such formulations became an integrated part of the tissue engineering approach. Now, CaPO4-based scaffolds are designed to induce bone formation and vascularization. These scaffolds are usually porous and harbor various biomolecules and/or cells. Therefore, current biomedical applications of CaPO4-based bioceramics include artificial bone grafts, bone augmentations, maxillofacial reconstruction, spinal fusion, and periodontal disease repairs, as well as bone fillers after tumor surgery. Prospective future applications comprise drug delivery and tissue engineering purposes because CaPO4 appear to be promising carriers of growth factors, bioactive peptides, and various types of cells.
Collapse
|
6
|
Sasaki JI, Abe GL, Li A, Thongthai P, Tsuboi R, Kohno T, Imazato S. Barrier membranes for tissue regeneration in dentistry. Biomater Investig Dent 2021; 8:54-63. [PMID: 34104896 PMCID: PMC8158285 DOI: 10.1080/26415275.2021.1925556] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/29/2021] [Indexed: 12/14/2022] Open
Abstract
Background: In dentistry, barrier membranes are used for guided tissue regeneration (GTR) and guided bone regeneration (GBR). Various membranes are commercially available and extensive research and development of novel membranes have been conducted. In general, membranes are required to provide barrier function, biosafety, biocompatibility and appropriate mechanical properties. In addition, membranes are expected to be bioactive to promote tissue regeneration. Objectives: This review aims to organize the fundamental characteristics of the barrier membranes that are available and studied for dentistry, based on their components. Results: The principal components of barrier membranes are divided into nonbiodegradable and biodegradable materials. Nonbiodegradable membranes are manufactured from synthetic polymers, metals or composites of these materials. The first reported barrier membrane was made from expanded polytetrafluoroethylene (e-PTFE). Titanium has also been applied for dental regenerative therapy and shows favorable barrier function. Biodegradable membranes are mainly made from natural and synthetic polymers. Collagens are popular materials that are processed for clinical use by cross-linking. Aliphatic polyesters and their copolymers have been relatively recently introduced into GTR and GBR treatments. In addition, to improve the tissue regenerative function and mechanical strength of biodegradable membranes, inorganic materials such as calcium phosphate and bioactive glass have been incorporated at the research stage. Conclusions: Currently, there are still insufficient guidelines for barrier membrane choice in GTR and GBR, therefore dentists are required to understand the characteristics of barrier membranes.
Collapse
Affiliation(s)
- Jun-Ichi Sasaki
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Gabriela L. Abe
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Aonan Li
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Pasiree Thongthai
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Ririko Tsuboi
- Department of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Tomoki Kohno
- Department of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Satoshi Imazato
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
- Department of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| |
Collapse
|
7
|
Abstract
This systematic investigation of bioapatite, the mineral component of human bone, aims to characterize its crystallographic state, including lattice parameters and average crystallite size, and correlate these values with respect to anatomical position (bone function), physicality, and bone chemical composition. In sample sets of buried bone from three different human adult skeletons, anatomical variation of crystallographic parameters and correlation to chemical composition were indeed observed. In general, the observed bioapatite a unit-cell edge-length among all analyzed human bones in this study was larger by 0.1–0.2% compared to that of stoichiometric hydroxylapatite (HAp), and substantially larger than that of fluorapatite (FAp). Across all analyzed samples, the a (=b) lattice parameter (unit cell edge-length) varies more than does the c lattice parameter. Average crystallite size (average coherent diffracting domain size) in the c-direction was equal to approximately 25 nm, ranging among the analyzed 18 bone samples from about 20–32 nm, and varying more than crystallite size in the a,b-direction (~8–10 nm). Neither lattice parameters nor average bioapatite crystallite sizes appeared to be correlated with bone mechanical function. The relative chemical composition of the bone material, however, was shown to correlate with the a (=b) lattice parameter. To our knowledge, this research provides, for the first time, the systematic study of the crystallographic parameters of human bone bioapatite in the context of anatomical position, physical constitution, and bone chemical composition using X-ray powder diffraction (XRPD) and Fourier transform infrared spectroscopy (FTIR).
Collapse
|
8
|
Orellano LAA, de Almeida SA, Pereira LX, Couto LC, de Lazari MGT, Viana CTR, Andrade SP, Campos PP. Upregulation of Foreign Body Response in Obese Mice. Obesity (Silver Spring) 2018; 26:531-539. [PMID: 29377630 DOI: 10.1002/oby.22102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 11/14/2017] [Accepted: 11/27/2017] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Obesity is a highly prevalent multifactorial metabolic condition in which the need for functional bioengineered substitutes (e.g., scaffolds for tissue engineering) is likely to occur. However, the adverse foreign body response (FBR) that invariably takes place adjacent to implant devices impairing their function is poorly characterized in this condition. This study investigated the influence of obesity on the host response to a synthetic matrix implanted subcutaneously in high-fat-fed obese mice. METHODS Histological analysis of 14-day-old implants was performed to identify collagen deposition, capsule thickness, fibroblast-like cells, foreign body giant cells, and mast cells. In addition, transforming growth factor β1 (TGF-β1) levels in the implants and serum were determined. RESULTS All fibrogenic markers (and TGF-β1 levels) increased in the implants of obese mice compared with their nonobese counterparts. Particularly relevant was the fibrous capsule thickness in implants of obese mice (234.2 ± 22.1 µm vs. 109.2 ± 13.4 µm in implants of nonobese animals). CONCLUSIONS The study results showing that obesity upregulates the main features of the FBR induced by subcutaneous implants in mice may be relevant in understanding biomaterial integration and performance in this condition. This is crucial to the development of strategies to maintain the integrity and function of implantable devices.
Collapse
Affiliation(s)
- Laura Alejandra Ariza Orellano
- Department of General Pathology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, Brazil
| | - Simone Aparecida de Almeida
- Department of General Pathology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, Brazil
| | - Luciana Xavier Pereira
- Department of General Pathology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, Brazil
| | - Letícia Chinait Couto
- Department of General Pathology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, Brazil
| | | | - Celso Tarso Rodrigues Viana
- Department of General Pathology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, Brazil
| | - Silvia Passos Andrade
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Paula Peixoto Campos
- Department of General Pathology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Minas Gerais, Brazil
| |
Collapse
|
9
|
Wang K, Wang Y, Zhao X, Li Y, Yang T, Zhang X, Wu X. Sustained release of simvastatin from hollow carbonated hydroxyapatite microspheres prepared by aspartic acid and sodium dodecyl sulfate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:565-571. [DOI: 10.1016/j.msec.2017.02.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 11/09/2016] [Accepted: 02/14/2017] [Indexed: 11/16/2022]
|
10
|
Yang H, Wang Y. Morphology control of hydroxyapatite microcrystals: Synergistic effects of citrate and CTAB. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:160-5. [PMID: 26952410 DOI: 10.1016/j.msec.2016.01.052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/08/2016] [Accepted: 01/20/2016] [Indexed: 11/18/2022]
Abstract
Using hydrothermal treatment and with the synergistic regulating effects of citrate and CTAB, various 3D hierarchical superstructure of hydroxyapatite (HAp) microcrystals were synthesized by simply adjusting the Ct/CTAB ratio and calcium-citrate complex (CC) morphology. The resulting superstructure was characterized using X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy (FESEM) etc. With the shape transformation of CC from sphere-like colloid, nano-needle to lamellar-like particles, the final products were hollow spheres, bunched-like microrods and nanorod clusters, respectively. A possible mechanism for the formation of HAp hierarchical microstructure was proposed.
Collapse
Affiliation(s)
- Hui Yang
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Yingjun Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.
| |
Collapse
|
11
|
OKADA M, HIRAMATSU D, OKIHARA T, MATSUMOTO T. Adsorption and desorption behaviors of cetylpyridinium chloride on hydroxyapatite nanoparticles with different morphologies. Dent Mater J 2016; 35:651-8. [DOI: 10.4012/dmj.2015-420] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Masahiro OKADA
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Daisuke HIRAMATSU
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Takumi OKIHARA
- Department of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University
| | - Takuya MATSUMOTO
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| |
Collapse
|
12
|
Tunkara E, Dag Ö. Salt‐Acid‐Surfactant Lyotropic Liquid Crystalline Mesophases: Synthesis of Highly Transparent Mesoporous Calcium Hydroxyapatite Thin Films. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ebrima Tunkara
- Department of Chemistry, Bilkent University, 06800 Ankara, Turkey, http://www.fen.bilkent.edu.tr/~dag/
| | - Ömer Dag
- Department of Chemistry, Bilkent University, 06800 Ankara, Turkey, http://www.fen.bilkent.edu.tr/~dag/
| |
Collapse
|
13
|
|
14
|
Synthesis and modification of apatite nanoparticles for use in dental and medical applications. JAPANESE DENTAL SCIENCE REVIEW 2015. [DOI: 10.1016/j.jdsr.2015.03.004] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
|
15
|
Tseng CL, Chen JC, Wu YC, Fang HW, Lin FH, Tang TP. Development of lattice-inserted 5-Fluorouracil-hydroxyapatite nanoparticles as a chemotherapeutic delivery system. J Biomater Appl 2015; 30:388-97. [DOI: 10.1177/0885328215588307] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Developing an effective vehicle for cancer treatment, hydroxyapatite nanoparticles were fabricated for drug delivery. When 5-Fluorouracil, a major chemoagent, is combined with hydroxyapatite nanocarriers by interclay insertion, the modified hydroxyapatite nanoparticles have superior lysosomal degradation profiles, which could be leveraged as controlled drug release. The decomposition of the hydroxyapatite nanocarriers facilitates the release of 5-Fluorouracil into the cytoplasm causing cell death. Hydroxyapatite nanoparticles with/without 5-Fluorouracil were synthesized and analyzed in this study. Their crystallization properties and chemical composition were examined by X-ray diffraction and Fourier transforms infrared spectroscopy. The 5-Fluorouracil release rate was determined by UV spectroscopy. The biocompatibility of hydroxyapatite-5-Fluorouracil extraction solution was assessed using 3T3 cells via a WST-8 assay. The effect of hydroxyapatite-5-Fluorouracil particles which directly work on the human lung adenocarcinoma (A549) cells was evaluated by a lactate dehydrogenase assay via contact cultivation. A 5-Fluorouracil-absorbed hydroxyapatite particles were also tested. Overall, hydroxyapatite-5-Fluorouracils were prepared using a co-precipitation method wherein 5-Fluorouracil was intercalated in the hydroxyapatite lattice as determined by X-ray diffraction. Energy dispersive scanning examination showed the 5-Fluorouracil content was higher in hydroxyapatite-5-Fluorouracil than in a prepared absorption formulation. With 5-Fluorouracil insertion in the lattice, the widths of the a and c axial constants of the hydroxyapatite crystal increased. The extraction solution of hydroxyapatite-5-Fluorouracil was nontoxic to 3T3 cells, in which 5-Fluorouracil was not released in a neutral phosphate buffer solution. In contrast, at a lower pH value (2.5), 5-Fluorouracil was released by the acidic decomposition of hydroxyapatite. Finally, the results of the lactate dehydrogenase assay revealed that 5-Fluorouracil-hydroxyapatite was highly toxic to A549 cells through direct culture, this phenomenon may result from lysosomal decomposition of particles causing 5-Fluorouracil releasing. The pH-responsive hydroxyapatite-5-Fluorouracil nanoparticles have the potential to be part of a selective drug-delivery system in chemotherapy for cancer treatment.
Collapse
Affiliation(s)
- Ching-Li Tseng
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Oral Medicine, Taipei Medical University, Taipei City, Taiwan
| | - Jung-Chih Chen
- Institute of Biomedical Engineering, National Chiao Tung University, Hsinchu City, Taiwan
| | - Yu-Chun Wu
- Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei City, Taiwan
| | - Hsu-Wei Fang
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei City, Taiwan
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Feng-Huei Lin
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan
- Institute of Biomedical Engineering, National Taiwan University, Taipei City, Taiwan
| | - Tzu-Piao Tang
- Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei City, Taiwan
| |
Collapse
|
16
|
Rivas M, Casanovas J, del Valle LJ, Bertran O, Revilla-López G, Turon P, Puiggalí J, Alemán C. An experimental-computer modeling study of inorganic phosphates surface adsorption on hydroxyapatite particles. Dalton Trans 2015; 44:9980-91. [DOI: 10.1039/c5dt00209e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The adsorption of different phosphates and a triphosphonate onto hydroxyapatite has been highlighted combining experiments and theoretical calculations.
Collapse
Affiliation(s)
- Manuel Rivas
- Departament d'Enginyeria Química
- E. T. S. d'Enginyeria Industrial de Barcelona
- Universitat Politècnica de Catalunya
- 08028 Barcelona
- Spain
| | - Jordi Casanovas
- Departament de Química
- Escola Politècnica Superior
- Universitat de Lleida
- Lleida E-25001
- Spain
| | - Luis J. del Valle
- Departament d'Enginyeria Química
- E. T. S. d'Enginyeria Industrial de Barcelona
- Universitat Politècnica de Catalunya
- 08028 Barcelona
- Spain
| | - Oscar Bertran
- Departament de Física Aplicada
- EEI
- Universitat Politècnica de Catalunya
- 08700 Igualada
- Spain
| | - Guillermo Revilla-López
- Departament d'Enginyeria Química
- E. T. S. d'Enginyeria Industrial de Barcelona
- Universitat Politècnica de Catalunya
- 08028 Barcelona
- Spain
| | - Pau Turon
- B. Braun Surgical
- 08191 Rubí (Barcelona)
- Spain
| | - Jordi Puiggalí
- Departament d'Enginyeria Química
- E. T. S. d'Enginyeria Industrial de Barcelona
- Universitat Politècnica de Catalunya
- 08028 Barcelona
- Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química
- E. T. S. d'Enginyeria Industrial de Barcelona
- Universitat Politècnica de Catalunya
- 08028 Barcelona
- Spain
| |
Collapse
|
17
|
Tian B, Tang S, Li Y, Long T, Qu XH, Yu DG, Guo YJ, Guo YP, Zhu ZA. Fabrication, characterization, and biocompatibility of ethyl cellulose/carbonated hydroxyapatite composite coatings on Ti6Al4V. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2059-2068. [PMID: 24859285 DOI: 10.1007/s10856-014-5239-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/08/2014] [Indexed: 06/03/2023]
Abstract
In order to improve the biocompatibility of metallic implants, bioactive components are often used as coatings so that a real bond with the surrounding bone tissue can be formed. We prepared ethyl cellulose/carbonated hydroxyapatite composite coatings (ECHCs) on Ti6Al4V substrates with carbonated hydroxyapatite coatings (CHACs) without ethyl cellulose as controls. The inorganic constituent on the CHACs and ECHCs is calcium-deficient carbonated hydroxyapatite with a flaky texture and a low degree of crystallinity. The flaky carbonated hydroxyapatite plates aggregate to form macropores with an aperture size of around 0.5-2.0 μm. The presence of ethyl cellulose provides superior morphology, contact angle, and biocompatibility characteristics. In comparison to CHACs, ECHCs exhibit a smoother, crack-free surface because the cracks are filled by ethyl cellulose. Moreover, the contact angle of ECHCs is 37.3°, greater than that of CHACs (13.0°). Surface biocompatibility was investigated by using human bone mesenchymal stem cells (hBMSCs). The attachment, spreadability, viability and proliferation of hBMSCs on ECHCs are superior to those on CHACs. Thus, the crack-free ECHCs have excellent biocompatibility and are appropriate for use as biological implants.
Collapse
Affiliation(s)
- Bo Tian
- Shanghai Key Laboratory of Orthopedic Implant, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, 200011, Shanghai, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Zeng H, Yang H, Liu X, Shi D, Cao B, Du C, Ouyang J, Yu L, Wang Y, Liao H. In vitro effects of differentially shaped hydroxyapatite microparticles on RAW264.7 cell responses. RSC Adv 2014. [DOI: 10.1039/c4ra02995j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We testin vitroeffects of differently shaped hydroxyapatite microparticles on RAW264.7 cell responses, which may provide more understanding towards the potential role of HA wear debris shapesin vivo.
Collapse
Affiliation(s)
- Huijun Zeng
- Department of Anatomy
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou, China
| | - Hui Yang
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou, China
| | - Xinghui Liu
- Department of Anatomy
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou, China
| | - Dandan Shi
- Department of Anatomy
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou, China
| | - Biao Cao
- Department of Anatomy
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou, China
| | - Chang Du
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou, China
| | - Jun Ouyang
- Department of Anatomy
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou, China
| | - Lei Yu
- Department of Anatomy
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou, China
| | - Yingjun Wang
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou, China
| | - Hua Liao
- Department of Anatomy
- Key Laboratory of Construction and Detection of Guangdong Province
- Southern Medical University
- Guangzhou, China
| |
Collapse
|
19
|
Fielding G, Bose S. SiO2 and ZnO dopants in three-dimensionally printed tricalcium phosphate bone tissue engineering scaffolds enhance osteogenesis and angiogenesis in vivo. Acta Biomater 2013; 9:9137-48. [PMID: 23871941 DOI: 10.1016/j.actbio.2013.07.009] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 07/08/2013] [Accepted: 07/08/2013] [Indexed: 10/26/2022]
Abstract
Calcium phosphate (CaP) scaffolds with three-dimensionally-interconnected pores play an important role in mechanical interlocking and biological fixation in bone implant applications. CaPs alone, however, are only osteoconductive (able to guide bone growth). Much attention has been given to the incorporation of biologics and pharmacologics to add osteoinductive (able to cause new bone growth) properties to CaP materials. Because biologics and pharmacologics are generally delicate compounds and also subject to increased regulatory scrutiny, there is a need to investigate alternative methods to introduce osteoinductivity to CaP materials. In this study silica (SiO2) and zinc oxide (ZnO) have been incorporated into three-dimensional printed β-tricalcium phosphate (β-TCP) scaffolds to investigate their potential to trigger osteoinduction in vivo. Silicon and zinc are trace elements that are common in bone and have also been shown to have many beneficial properties, from increased bone regeneration to angiogenesis. Implants were placed in bicortical femur defects introduced to a murine model for up to 16 weeks. The addition of dopants into TCP increased the capacity for new early bone formation by modulating collagen I production and osteocalcin production. Neovascularization was found to be up to three times more than the pure TCP control group. The findings from this study indicate that the combination of SiO2 and ZnO dopants in TCP may be a viable alternative to introducing osteoinductive properties to CaPs.
Collapse
|
20
|
Dorozhkin SV. Calcium Orthophosphate-Based Bioceramics. MATERIALS (BASEL, SWITZERLAND) 2013; 6:3840-3942. [PMID: 28788309 PMCID: PMC5452669 DOI: 10.3390/ma6093840] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 08/07/2013] [Accepted: 08/19/2013] [Indexed: 02/07/2023]
Abstract
Various types of grafts have been traditionally used to restore damaged bones. In the late 1960s, a strong interest was raised in studying ceramics as potential bone grafts due to their biomechanical properties. A bit later, such synthetic biomaterials were called bioceramics. In principle, bioceramics can be prepared from diverse materials but this review is limited to calcium orthophosphate-based formulations only, which possess the specific advantages due to the chemical similarity to mammalian bones and teeth. During the past 40 years, there have been a number of important achievements in this field. Namely, after the initial development of bioceramics that was just tolerated in the physiological environment, an emphasis was shifted towards the formulations able to form direct chemical bonds with the adjacent bones. Afterwards, by the structural and compositional controls, it became possible to choose whether the calcium orthophosphate-based implants remain biologically stable once incorporated into the skeletal structure or whether they were resorbed over time. At the turn of the millennium, a new concept of regenerative bioceramics was developed and such formulations became an integrated part of the tissue engineering approach. Now calcium orthophosphate scaffolds are designed to induce bone formation and vascularization. These scaffolds are often porous and harbor different biomolecules and/or cells. Therefore, current biomedical applications of calcium orthophosphate bioceramics include bone augmentations, artificial bone grafts, maxillofacial reconstruction, spinal fusion, periodontal disease repairs and bone fillers after tumor surgery. Perspective future applications comprise drug delivery and tissue engineering purposes because calcium orthophosphates appear to be promising carriers of growth factors, bioactive peptides and various types of cells.
Collapse
|
21
|
Mavropoulos E, Hausen M, Costa AM, Alves G, Mello A, Ospina CA, Mir M, Granjeiro JM, Rossi AM. The impact of the RGD peptide on osteoblast adhesion and spreading on zinc-substituted hydroxyapatite surface. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1271-1283. [PMID: 23494616 DOI: 10.1007/s10856-013-4851-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 01/16/2013] [Indexed: 06/01/2023]
Abstract
The incorporation of zinc into the hydroxyapatite structure (ZnHA) has been proposed to stimulate osteoblast proliferation and differentiation. Another approach to improve cell adhesion and hydroxyapatite (HA) performance is coating HA with adhesive proteins or peptides such as RGD (arginine-glycine-aspartic acid). The present study investigated the adhesion of murine osteoblastic cells to non-sintered zinc-substituted HA disks before and after the adsorption of RGD. The incorporation of zinc into the HA structure simultaneously changed the topography of disk's surface on the nanoscale and the disk's surface chemistry. Fluorescence microscopy analyses using RGD conjugated to a fluorescein derivative demonstrated that ZnHA adsorbed higher amounts of RGD than non-substituted HA. Zinc incorporation into HA promoted cell adhesion and spreading, but no differences in the cell density, adhesion and spreading were detected when RGD was adsorbed onto ZnHA. The pre-treatment of disks with fetal bovine serum (FBS) greatly increased the cell density and cell surface area for all RGD-free groups, overcoming the positive contribution of zinc to cell adhesion. The presence of RGD on the ZnHA surface impaired the effects of FBS pre-treatment possibly due to competition between FBS proteins and RGD for surface binding sites.
Collapse
Affiliation(s)
- Elena Mavropoulos
- Brazilian Center for Physics Research, Xavier Sigaud 150, Urca, RJ 22290-180, Brazil.
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Yang YH, Liu CH, Liang YH, Lin FH, Wu KCW. Hollow mesoporous hydroxyapatite nanoparticles (hmHANPs) with enhanced drug loading and pH-responsive release properties for intracellular drug delivery. J Mater Chem B 2013; 1:2447-2450. [DOI: 10.1039/c3tb20365d] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
23
|
Tada S, Kitajima T, Ito Y. Design and synthesis of binding growth factors. Int J Mol Sci 2012; 13:6053-6072. [PMID: 22754349 PMCID: PMC3382770 DOI: 10.3390/ijms13056053] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 04/10/2012] [Accepted: 05/09/2012] [Indexed: 01/01/2023] Open
Abstract
Growth factors play important roles in tissue regeneration. However, because of their instability and diffusible nature, improvements in their performance would be desirable for therapeutic applications. Conferring binding affinities would be one way to improve their applicability. Here we review techniques for conjugating growth factors to polypeptides with particular affinities. Conjugation has been designed at the level of gene fusion and of polypeptide ligation. We summarize and discuss the designs and applications of binding growth factors prepared by such conjugation approaches.
Collapse
Affiliation(s)
- Seiichi Tada
- Nano Medical Engineering Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Takashi Kitajima
- Nano Medical Engineering Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
24
|
Kotanen CN, Wilson AN, Wilson AM, Ishihara K, Guiseppi-Elie A. Biomimetic hydrogels gate transport of calcium ions across cell culture inserts. Biomed Microdevices 2012; 14:549-58. [DOI: 10.1007/s10544-012-9632-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
25
|
Xie C, Lu H, Li W, Chen FM, Zhao YM. The use of calcium phosphate-based biomaterials in implant dentistry. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:853-862. [PMID: 22201031 DOI: 10.1007/s10856-011-4535-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 12/12/2011] [Indexed: 05/31/2023]
Abstract
Since calcium phosphates (CaPs) were first proposed, a wide variety of formulations have been developed and continuously optimized, some of which (e.g. calcium phosphate cements, CPCs) have been successfully commercialized for clinical applications. These CaP-based biomaterials have been shown to be very attractive bone substitutes and efficient drug delivery vehicles across diverse biomedical applications. In this article, CaP biomaterials, principally CPCs, are addressed as alternatives/complements to autogenous bone for grafting in implant dentistry and as coating materials for enhancing the osteoinductivity of titanium implants, highlighting their performance benefits simultaneously as carriers for growth factors and as scaffolds for cell proliferation, differentiation and penetration. Different strategies for employing CaP biomaterials in dental implantology aim to ultimately reach the same goal, namely to enhance the osseointegration process for dental implants in the context of immediate loading and to augment the formation of surrounding bone to guarantee long-term success.
Collapse
Affiliation(s)
- Cheng Xie
- Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | | | | | | | | |
Collapse
|
26
|
Dorozhkin SV. Calcium orthophosphates: occurrence, properties, biomineralization, pathological calcification and biomimetic applications. BIOMATTER 2011; 1:121-64. [PMID: 23507744 PMCID: PMC3549886 DOI: 10.4161/biom.18790] [Citation(s) in RCA: 150] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The present overview is intended to point the readers' attention to the important subject of calcium orthophosphates. This type of materials is of special significance for human beings, because they represent the inorganic part of major normal (bones, teeth and antlers) and pathological (i.e., those appearing due to various diseases) calcified tissues of mammals. For example, atherosclerosis results in blood vessel blockage caused by a solid composite of cholesterol with calcium orthophosphates, while dental caries and osteoporosis mean a partial decalcification of teeth and bones, respectively, that results in replacement of a less soluble and harder biological apatite by more soluble and softer calcium hydrogenphosphates. Therefore, the processes of both normal and pathological calcifications are just an in vivo crystallization of calcium orthophosphates. Similarly, dental caries and osteoporosis might be considered an in vivo dissolution of calcium orthophosphates. Thus, calcium orthophosphates hold a great significance for humankind, and in this paper, an overview on the current knowledge on this subject is provided.
Collapse
|
27
|
Hudalla GA, Murphy WL. Biomaterials that regulate growth factor activity via bioinspired interactions. ADVANCED FUNCTIONAL MATERIALS 2011; 21:1754-1768. [PMID: 21921999 PMCID: PMC3171147 DOI: 10.1002/adfm.201002468] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Growth factor activity is localized within the natural extracellular matrix (ECM) by specific non-covalent interactions with core ECM biomolecules, such as proteins and proteoglycans. Recently, these interactions have inspired us and others to develop synthetic biomaterials that can non-covalently regulate growth factor activity for tissue engineering applications. For example, biomaterials covalently or non-covalently modified with heparin glycosaminoglycans can augment growth factor release strategies. In addition, recent studies demonstrate that biomaterials modified with heparin-binding peptides can sequester cell-secreted heparin proteoglycans and, in turn, sequester growth factors and regulate stem cell behavior. Another set of studies show that modular versions of growth factor molecules can be designed to interact with specific components of natural and synthetic ECMs, including collagen and hydroxyapatite. In addition, layer-by-layer assemblies of GAGs and other natural polyelectrolytes retain growth factors at a cell-material interface via specific non-covalent interactions. This review will detail the various bioinspired strategies being used to non-covalently localize growth factor activity within biomaterials, and will highlight in vivo examples of the efficacy of these materials to promote tissue regeneration.
Collapse
Affiliation(s)
- Gregory A. Hudalla
- Department of Biomedical Engineering, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave. Madison, WI 53705 (USA)
| | - William L. Murphy
- Department of Biomedical Engineering, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave. Madison, WI 53705 (USA)
- Department of Pharmacology, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave. Madison, WI 53705 (USA)
- Department of Orthopedics and Rehabilitation, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave. Madison, WI 53705 (USA)
| |
Collapse
|
28
|
Recombinant hBMP4 incorporated with non-canonical amino acid for binding to hydroxyapatite. Biotechnol Lett 2011; 33:1885-90. [DOI: 10.1007/s10529-011-0637-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Accepted: 04/19/2011] [Indexed: 12/30/2022]
|
29
|
Patel M, Dunn TA, Tostanoski S, Fisher JP. Cyclic acetal hydroxyapatite composites and endogenous osteogenic gene expression of rat marrow stromal cells. J Tissue Eng Regen Med 2011; 4:422-36. [PMID: 20047194 DOI: 10.1002/term.252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In this study, bone marrow stromal cells (BMSCs) were differentiated on cyclic acetal composites containing hydroxyapatite (HA) particles (110 or 550 nm). These composites were evaluated for their role in influencing osteogenic signalling by encapsulated BMSCs. While a number of factors exert influence on osteogenic signalling during the production of an osteogenic matrix, we hypothesize that HA particles may upregulate bone growth factor expression due to enhanced BMSC adhesion. To this end, fluorescence-activated cell sorting (FACS) analysis was performed for the evaluation of BMSC surface marker expression after culture on two-dimensional (2D) cyclic acetal/HA composites. Three-dimensional (3D) composites were then fabricated by incorporating 110 or 550 nm HA particles at 5, 10 and 50 ng/ml concentrations. Bone growth factor molecules (TGFbeta1, FGF-2 and PDGFa), bone biomarker molecules (ALP, OC, OPN and OCN) and extracellular matrix-related molecules (FN, MMP-13, Dmp1 and aggrecan) were selected for evaluation of osteogenic signalling mechanisms when in presence of these composites. FACS results at day 0 demonstrated that BMSCs were a heterogeneous population with a small percentage of cells staining positive for CD29, CD90 and CD51/61, while staining negative for CD34 and CD45. At day 3, a significant enrichment of cells staining strongly for CD29, CD90 and CD51/61 was achieved. Gene expression patterns for bone growth factors and extracellular matrix molecules were found to be largely dependent upon the size of HA particles. Bone marker molecules, except OCN, had unaltered expression patterns in response to the varied size of HA particles. Overall, the results indicate that larger-sized HA particles upregulate PDGF and these groups were also associated with the most significant increase in osteodifferentiation markers, particularly ALP. Our results suggest that endogenous signalling is dependent upon material properties. Furthermore, we propose that studying gene expression patterns induced by the surrounding biomaterials environment is a fundamental step in the creation of engineered tissues.
Collapse
Affiliation(s)
- Minal Patel
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | | | | | | |
Collapse
|
30
|
Dorozhkin SV. Calcium orthophosphates as bioceramics: state of the art. J Funct Biomater 2010; 1:22-107. [PMID: 24955932 PMCID: PMC4030894 DOI: 10.3390/jfb1010022] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 11/16/2010] [Accepted: 11/25/2010] [Indexed: 12/18/2022] Open
Abstract
In the late 1960s, much interest was raised in regard to biomedical applications of various ceramic materials. A little bit later, such materials were named bioceramics. This review is limited to bioceramics prepared from calcium orthophosphates only, which belong to the categories of bioactive and bioresorbable compounds. There have been a number of important advances in this field during the past 30-40 years. Namely, by structural and compositional control, it became possible to choose whether calcium orthophosphate bioceramics were biologically stable once incorporated within the skeletal structure or whether they were resorbed over time. At the turn of the millennium, a new concept of calcium orthophosphate bioceramics-which is able to promote regeneration of bones-was developed. Presently, calcium orthophosphate bioceramics are available in the form of particulates, blocks, cements, coatings, customized designs for specific applications and as injectable composites in a polymer carrier. Current biomedical applications include artificial replacements for hips, knees, teeth, tendons and ligaments, as well as repair for periodontal disease, maxillofacial reconstruction, augmentation and stabilization of the jawbone, spinal fusion and bone fillers after tumor surgery. Exploratory studies demonstrate potential applications of calcium orthophosphate bioceramics as scaffolds, drug delivery systems, as well as carriers of growth factors, bioactive peptides and/or various types of cells for tissue engineering purposes.
Collapse
|
31
|
Patel M, Patel KJ, Caccamese JF, Coletti DP, Sauk JJ, Fisher JP. Characterization of cyclic acetal hydroxyapatite nanocomposites for craniofacial tissue engineering. J Biomed Mater Res A 2010; 94:408-18. [PMID: 20186741 DOI: 10.1002/jbm.a.32683] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Cyclic acetal hydrogels are a novel group of biomaterials which may facilitate osteogenic differentiation of encapsulated bone marrow stromal cells (BMSCs) because of their neutral degradation products. Here, we have incorporated hydroxyapatite nanoparticles within cyclic acetal hydrogels to create cyclic acetal nanocomposites for craniofacial tissue engineering applications. We hypothesized that inclusion of nanosized hydroxyapatite particles within cyclic acetal hydrogels would upregulate osteogenic signal expression of encapsulated BMSCs, due to enhanced cell adhesion, and therefore promote osteodifferentiation. Experimental nanocomposite groups consisted of lower (5 ng/mL) and higher (50 ng/mL) concentrations of nanoparticles. The nanocomposites were characterized by scanning electron microscopy, transmission electron microscopy, and energy dispersive spectroscopy. Swelling parameters of hydrogels in the presence of nanoparticles was studied. Osteoblastic differentiation was characterized by alkaline phosphatase (ALP) and osteocalcin (OC) expression, whereas endogenous osteogenic signal expression was characterized by morphogenetic protein-2 (BMP-2) expression. Finally, immunohistochemistry was performed to detect the presence of OC at the protein level. Results indicated that hydroxyapatite nanoparticles were uniformly distributed throughout the hydrogels and did not affect material properties of the gels. Viability of cells was not affected by nanoparticle concentration, and BMP-2 and OC mRNA expression was enhanced in the presence of nanoparticles. However, a difference in BMP-2, ALP, and OC mRNA expression was not noted between the lower and higher concentrations of nanoparticles. This work demonstrates that inclusion of hydroxyapatite nanoparticles within a cyclic acetal nanocomposite hydrogel may enhance BMSC differentiation by promoting endogenous osteogenic signal expression.
Collapse
Affiliation(s)
- Minal Patel
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA
| | | | | | | | | | | |
Collapse
|
32
|
Nakamura S, Matsumoto T, Sasaki JI, Egusa H, Lee KY, Nakano T, Sohmura T, Nakahira A. Effect of Calcium Ion Concentrations on Osteogenic Differentiation and Hematopoietic Stem Cell Niche-Related Protein Expression in Osteoblasts. Tissue Eng Part A 2010; 16:2467-73. [DOI: 10.1089/ten.tea.2009.0337] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Shinya Nakamura
- Department of Materials Science, Osaka Prefecture University, Sakai, Japan
| | - Takuya Matsumoto
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Jun-Ichi Sasaki
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Hiroshi Egusa
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Kuen Yong Lee
- Department of Bioengineering, Hanyang University, Seoul, Republic of Korea
| | | | - Taiji Sohmura
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Atsushi Nakahira
- Department of Materials Science, Osaka Prefecture University, Sakai, Japan
| |
Collapse
|
33
|
Chen FM, Jin Y. Periodontal tissue engineering and regeneration: current approaches and expanding opportunities. TISSUE ENGINEERING PART B-REVIEWS 2010; 16:219-55. [PMID: 19860551 DOI: 10.1089/ten.teb.2009.0562] [Citation(s) in RCA: 212] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The management of periodontal tissue defects that result from periodontitis represents a medical and socioeconomic challenge. Concerted efforts have been and still are being made to accelerate and augment periodontal tissue and bone regeneration, including a range of regenerative surgical procedures, the development of a variety of grafting materials, and the use of recombinant growth factors. More recently, tissue-engineering strategies, including new cell- and/or matrix-based dimensions, are also being developed, analyzed, and employed for periodontal regenerative therapies. Tissue engineering in periodontology applies the principles of engineering and life sciences toward the development of biological techniques that can restore lost alveolar bone, periodontal ligament, and root cementum. It is based on an understanding of the role of periodontal formation and aims to grow new functional tissues rather than to build new replacements of periodontium. Although tissue engineering has merged to create more opportunities for predictable and optimal periodontal tissue regeneration, the technique and design for preclinical and clinical studies remain in their early stages. To date, the reconstruction of small- to moderate-sized periodontal bone defects using engineered cell-scaffold constructs is technically feasible, and some of the currently developed concepts may represent alternatives for certain ideal clinical scenarios. However, the predictable reconstruction of the normal structure and functionality of a tooth-supporting apparatus remains challenging. This review summarizes current regenerative procedures for periodontal healing and regeneration and explores their progress and difficulties in clinical practice, with particular emphasis placed upon current challenges and future possibilities associated with tissue-engineering strategies in periodontal regenerative medicine.
Collapse
Affiliation(s)
- Fa-Ming Chen
- Department of Periodontology and Oral Medicine, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | | |
Collapse
|
34
|
Morais JM, Papadimitrakopoulos F, Burgess DJ. Biomaterials/tissue interactions: possible solutions to overcome foreign body response. AAPS J 2010; 12:188-96. [PMID: 20143194 PMCID: PMC2844517 DOI: 10.1208/s12248-010-9175-3] [Citation(s) in RCA: 334] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Accepted: 01/12/2010] [Indexed: 11/30/2022] Open
Abstract
In recent years, a variety of biomaterial implantable devices has been developed. Of particular significance to pharmaceutical sciences is the progress made on the development of drug/implantable device combination products. However, the clinical application of these devices is still a critical issue due to the host response, which results from both the tissue trauma during implantation and the presence of the device in the body. Accordingly, the in vivo functionality and durability of any implantable device can be compromised by the body response to the foreign material. Numerous strategies to overcome negative body reactions have been reported. The aim of this review is to outline some key issues of biomaterial/tissue interactions such as foreign body response and biocompatibility and biocompatibility assessment. In addition, general approaches used to overcome the in vivo instability of implantable devices are presented, including (a) biocompatible material coatings, (b) steroidal and nonsteroidal anti-inflammatory drugs, and (c) angiogenic drugs. In particular, strategies to overcome host response to glucose biosensors are summarized.
Collapse
Affiliation(s)
- Jacqueline M. Morais
- />Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, 69 North Eagleville Road, Storrs, Connecticut 06269 USA
| | | | - Diane J. Burgess
- />Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, 69 North Eagleville Road, Storrs, Connecticut 06269 USA
| |
Collapse
|
35
|
|
36
|
Uddin MH, Matsumoto T, Ishihara S, Nakahira A, Okazaki M, Sohmura T. Apatite Containing Aspartic Acid for Selective Protein Loading. J Dent Res 2010; 89:488-92. [DOI: 10.1177/0022034509357309] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Physico-chemical modifications of hydroxyapatite (HAp) materials are considered as pre-requisites for the development of new bioactive carrier materials for drug delivery and tissue engineering applications. Since acidic amino acids have well-documented affinities to both HAp and basic proteins, HAp modified by aspartic acid (Asp, acidic amino acid) might be one of the candidate substrates for a basic protein carrier. Here, we synthesized HAp in the presence of various concentrations of Asp and observed that HAp crystallinity and other physico-chemical properties were effectively modulated. Detailed studies indicated that Asp was not incorporated in the HAp crystal lattice, but rather was trapped in HAp crystals. Protein adsorption studies indicated that the HAp particles modified by Asp had a selective loading capacity for basic protein. Therefore, HAp particles containing Asp might have potential in drug delivery applications, especially as the carrier of basic proteins including bFGF and BMP.
Collapse
Affiliation(s)
- M. Hafiz Uddin
- Department of Oromaxillofacial Regeneration, Osaka University, 1-8 Yamada-oka, Suita, 565-0871, Japan
| | - T. Matsumoto
- Department of Oromaxillofacial Regeneration, Osaka University, 1-8 Yamada-oka, Suita, 565-0871, Japan
| | - S. Ishihara
- Department of Material Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, 599-8531, Japan
| | - A. Nakahira
- Department of Material Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, 599-8531, Japan
| | - M. Okazaki
- Department of Biomaterials Science, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - T. Sohmura
- Department of Oromaxillofacial Regeneration, Osaka University, 1-8 Yamada-oka, Suita, 565-0871, Japan
| |
Collapse
|
37
|
Lippens E, Vertenten G, Gironès J, Declercq H, Saunders J, Luyten J, Duchateau L, Schacht E, Vlaminck L, Gasthuys F, Cornelissen M. Evaluation of Bone Regeneration with an Injectable, In Situ Polymerizable Pluronic® F127 Hydrogel Derivative Combined with Autologous Mesenchymal Stem Cells in a Goat Tibia Defect Model. Tissue Eng Part A 2010; 16:617-27. [DOI: 10.1089/ten.tea.2009.0418] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Evi Lippens
- Department of Basic Medical Sciences, Ghent University, Ghent, Belgium
| | - Geert Vertenten
- Department of Surgery and Anaesthesiology of Domestic Animals, Ghent University, Merelbeke, Belgium
| | - Jordi Gironès
- Polymer Chemistry and Biomaterials Research Group, Department Organic Chemistry, Ghent University, Ghent, Belgium
| | - Heidi Declercq
- Department of Basic Medical Sciences, Ghent University, Ghent, Belgium
| | - Jimmy Saunders
- Department of Medical Imaging of Domestic Animals, Ghent University, Merelbeke, Belgium
| | | | - Luc Duchateau
- Department of Physiology and Biometrics, Ghent University, Merelbeke, Belgium
| | - Etienne Schacht
- Polymer Chemistry and Biomaterials Research Group, Department Organic Chemistry, Ghent University, Ghent, Belgium
| | - Lieven Vlaminck
- Department of Surgery and Anaesthesiology of Domestic Animals, Ghent University, Merelbeke, Belgium
| | - Frank Gasthuys
- Department of Surgery and Anaesthesiology of Domestic Animals, Ghent University, Merelbeke, Belgium
| | - Maria Cornelissen
- Department of Basic Medical Sciences, Ghent University, Ghent, Belgium
| |
Collapse
|
38
|
Chen FM, Shelton RM, Jin Y, Chapple ILC. Localized delivery of growth factors for periodontal tissue regeneration: role, strategies, and perspectives. Med Res Rev 2009; 29:472-513. [PMID: 19260070 DOI: 10.1002/med.20144] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Difficulties associated with achieving predictable periodontal regeneration, means that novel techniques need to be developed in order to regenerate the extensive soft and hard tissue destruction that results from periodontitis. Localized delivery of growth factors to the periodontium is an emerging and versatile therapeutic approach, with the potential to become a powerful tool in future regenerative periodontal therapy. Optimized delivery regimes and well-defined release kinetics appear to be logical prerequisites for safe and efficacious clinical application of growth factors and to avoid unwanted side effects and toxicity. While adequate concentrations of growth factor(s) need to be appropriately localized, delivery vehicles are also expected to possess properties such as protein protection, precision in controlled release, biocompatibility and biodegradability, self-regulated therapeutic activity, potential for multiple delivery, and good cell/tissue penetration. Here, current knowledge, recent advances, and future possibilities of growth factor delivery strategies are outlined for periodontal regeneration. First, the role of those growth factors that have been implicated in the periodontal healing/regeneration process, general requirements for their delivery, and the different material types available are described. A detailed discussion follows of current strategies for the selection of devices for localized growth factor delivery, with particular emphasis placed upon their advantages and disadvantages and future prospects for ongoing studies in reconstructing the tooth supporting apparatus.
Collapse
Affiliation(s)
- Fa-Ming Chen
- Department of Periodontology and Oral Medicine, School of Stomatology, The Fourth Military Medical University, Shaanxi, People's Republic of China.
| | | | | | | |
Collapse
|
39
|
Abstract
The present overview is intended to point the readers’ attention to the important subject of calcium orthophosphates. These materials are of the special significance because they represent the inorganic part of major normal (bones, teeth and dear antlers) and pathological (i.e. those appearing due to various diseases) calcified tissues of mammals. Due to a great chemical similarity with the biological calcified tissues, many calcium orthophosphates possess remarkable biocompatibility and bioactivity. Materials scientists use this property extensively to construct artificial bone grafts that are either entirely made of or only surface-coated with the biologically relevant calcium ortho-phosphates. For example, self-setting hydraulic cements made of calcium orthophosphates are helpful in bone repair, while titanium substitutes covered by a surface layer of calcium orthophosphates are used for hip joint endoprostheses and as tooth substitutes. Porous scaffolds made of calcium orthophosphates are very promising tools for tissue engineering applications. In addition, technical grade calcium orthophosphates are very popular mineral fertilizers. Thus ere calcium orthophosphates are of great significance for humankind and, in this paper, an overview on the current knowledge on this subject is provided.
Collapse
|
40
|
Foster BL, Tompkins KA, Rutherford RB, Zhang H, Chu EY, Fong H, Somerman MJ. Phosphate: known and potential roles during development and regeneration of teeth and supporting structures. BIRTH DEFECTS RESEARCH. PART C, EMBRYO TODAY : REVIEWS 2008; 84:281-314. [PMID: 19067423 PMCID: PMC4526155 DOI: 10.1002/bdrc.20136] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Inorganic phosphate (P(i)) is abundant in cells and tissues as an important component of nucleic acids and phospholipids, a source of high-energy bonds in nucleoside triphosphates, a substrate for kinases and phosphatases, and a regulator of intracellular signaling. The majority of the body's P(i) exists in the mineralized matrix of bones and teeth. Systemic P(i) metabolism is regulated by a cast of hormones, phosphatonins, and other factors via the bone-kidney-intestine axis. Mineralization in bones and teeth is in turn affected by homeostasis of P(i) and inorganic pyrophosphate (PPi), with further regulation of the P(i)/PP(i) ratio by cellular enzymes and transporters. Much has been learned by analyzing the molecular basis for changes in mineralized tissue development in mutant and knock-out mice with altered P(i) metabolism. This review focuses on factors regulating systemic and local P(i) homeostasis and their known and putative effects on the hard tissues of the oral cavity. By understanding the role of P(i) metabolism in the development and maintenance of the oral mineralized tissues, it will be possible to develop improved regenerative approaches.
Collapse
Affiliation(s)
- Brian L Foster
- Department of Periodontics, University of Washington School of Dentistry, Seattle, WA 98195, USA
| | | | | | | | | | | | | |
Collapse
|
41
|
Onuki Y, Bhardwaj U, Papadimitrakopoulos F, Burgess DJ. A review of the biocompatibility of implantable devices: current challenges to overcome foreign body response. J Diabetes Sci Technol 2008; 2:1003-15. [PMID: 19885290 PMCID: PMC2769826 DOI: 10.1177/193229680800200610] [Citation(s) in RCA: 213] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In recent years, a variety of devices (drug-eluting stents, artificial organs, biosensors, catheters, scaffolds for tissue engineering, heart valves, etc.) have been developed for implantation into patients. However, when such devices are implanted into the body, the body can react to these in a number of different ways. These reactions can result in an unexpected risk for patients. Therefore, it is important to assess and optimize the biocompatibility of implantable devices. To date, numerous strategies have been investigated to overcome body reactions induced by the implantation of devices. This review focuses on the foreign body response and the approaches that have been taken to overcome this. The biological response following device implantation and the methods for biocompatibility evaluation are summarized. Then the risks of implantable devices and the challenges to overcome these problems are introduced. Specifically, the challenges used to overcome the functional loss of glucose sensors, restenosis after stent implantation, and calcification induced by implantable devices are discussed.
Collapse
Affiliation(s)
- Yoshinori Onuki
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut
| | - Upkar Bhardwaj
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut
| | | | - Diane J. Burgess
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut
| |
Collapse
|
42
|
Scharnweber T, Santos C, Franke RP, Almeida MM, Costa MEV. Influence of spray-dried hydroxyapatite-5-fluorouracil granules on cell lines derived from tissues of mesenchymal origin. Molecules 2008; 13:2729-39. [PMID: 18978702 PMCID: PMC6245389 DOI: 10.3390/molecules13112729] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2008] [Revised: 10/09/2008] [Accepted: 10/24/2008] [Indexed: 11/17/2022] Open
Abstract
In our previous work we described the preparation and characterization of spray dried hydroxyapatite micro granules loaded with 5-fluorouracil (5-FU). These loaded particles are used as a model drug delivery system (DDS). In this study we examined the in vitro response of two cell lines derived from different tissues to 5-FU loaded granules (LG). Both cell lines, either L929 cells of a mouse fibroblast lineage or cells originating from a rat osteosarcoma (ROS 17/2.8) showed a dose dependent decrease in cell proliferation in response to 5-FU-, either dissolved in the culture medium or loaded onto particles. The response of the two cell lines to loaded and nonloaded particles was different. The effect of LG and of a corresponding concentration of free 5-FU was practically the same for the ROS 17/2.8 cells indicating that ROS 17/2.8 cells were not affected by the carrier material. In contrast, L929 cells showed a slight decrease in cell proliferation also in the presence of granules not loaded with 5-FU. This is thought to be attributed to the inhibition of mitogenesis by phosphocitrates, already demonstrated in fibroblasts. In summary, we found that the loaded 5-FU kept its effectivity after the spray drying process and that the response towards the granules varied with cell type. This is the first step towards a tissue specific DDS.
Collapse
Affiliation(s)
- Tim Scharnweber
- Institute for Biological Interfaces; Forschungszentrum Karlsruhe GmbH, 76344 Eggenstein-Leopoldshafen Karlsruhe, Germany
| | - Catarina Santos
- Institute for Biological Interfaces; Forschungszentrum Karlsruhe GmbH, 76344 Eggenstein-Leopoldshafen Karlsruhe, Germany
- Department of Ceramic and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal; E-mails: (C. S.), (M-M. A.), (M-V. C.)
| | - Ralf-Peter Franke
- Institute for Biological Interfaces; Forschungszentrum Karlsruhe GmbH, 76344 Eggenstein-Leopoldshafen Karlsruhe, Germany
- Department of Biomaterials, University of Ulm, 89081 Ulm, Germany; E-mail: (R-P. F.)
| | - Maria Margarida Almeida
- Department of Ceramic and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal; E-mails: (C. S.), (M-M. A.), (M-V. C.)
| | - Maria Elisabete V. Costa
- Department of Ceramic and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal; E-mails: (C. S.), (M-M. A.), (M-V. C.)
| |
Collapse
|