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Influence of hydroxyapatite nanoparticles on the formation of calcium fluoride surface layer on enamel and dentine in vitro. Sci Rep 2022; 12:17612. [PMID: 36266387 PMCID: PMC9584963 DOI: 10.1038/s41598-022-21545-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 09/28/2022] [Indexed: 01/13/2023] Open
Abstract
Topical application of different fluoride preparations is considered to be the gold standard of oral prophylaxis measures in preventive dentistry. Hydroxyapatite nanoparticles (nano-HAP) as well, have received considerable attention for dental use in the past few decades. The purpose of this in-vitro study was to analyze the interaction between nano-HAP and different fluoride preparations. In order to investigate the possibility to establish, in the presence of nano-HAP, reproducible calcium fluoride surface layers, specimens were visually examined with regard to the surface coverage's structure, morphology, homogeneity and stability. Test series based on enamel and dentine specimens, that were obtained from extracted bovine teeth, were conducted. Thereby, sodium fluoride, olaflur, elmex Fluid (10.000 ppm) and an aqueous nano-HAP solution (5%) served as test products and sterile water as reference. First, single application of nano- HAP and fluoride was tested. After 5 min of incubation in the test solution, the surface coverage was examined by scanning electron microscopy (SEM). Furthermore, samples were determined by energy dispersive X-ray spectroscopy (EDX) to identify the present elements of the surface layer, particularly fluoride. To test the calcium fluoride layer's persistence and stability, samples were exposed to the spray of a dental multifunctional syringe for 20 s using maximum pressure and maximum water supply. In the second application protocol, fluoride and nano-HAP were applied simultaneously and in the third application protocol they were used sequentially. SEM visualisation showed that the simultaneous or sequential addition of nano-HAP led to a distinct change in the surface layer's structure. Agglomerates of various sizes were formed, with obviously different morphology from the calcium fluoride globules, not covering the surface homogeneously and sprayed off with the multifunctional syringe easily. Application of pure fluoride compounds resulted in a more homogeneous calcium fluoride surface layer with higher persistence in comparison to the combination of fluoride and nano-HAP. Interaction between fluoride and nano-HAP clearly could be proved. On enamel as well as dentine surfaces, the combined application of nano-HAP and fluoride has a negative effect on the stability and persistence of the calcium fluoride surface precipitate.
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Visan AI, Ristoscu C, Popescu-Pelin G, Sopronyi M, Matei CE, Socol G, Chifiriuc MC, Bleotu C, Grossin D, Brouillet F, Grill SL, Bertrand G, Zgura I, Cristescu R, Mihailescu IN. Composite Drug Delivery System Based on Amorphous Calcium Phosphate-Chitosan: An Efficient Antimicrobial Platform for Extended Release of Tetracycline. Pharmaceutics 2021; 13:pharmaceutics13101659. [PMID: 34683952 PMCID: PMC8537227 DOI: 10.3390/pharmaceutics13101659] [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: 09/03/2021] [Revised: 10/04/2021] [Accepted: 10/04/2021] [Indexed: 11/26/2022] Open
Abstract
One major warning emerging during the first worldwide combat against healthcare-associated infections concerns the key role of the surface in the storage and transfer of the virus. Our study is based on the laser coating of surfaces with an inorganic/organic composite mixture of amorphous calcium phosphate–chitosan–tetracycline that is able to fight against infectious agents, but also capable of preserving its activity for a prolonged time, up to several days. The extended release in simulated fluids of the composite mixture containing the drug (tetracycline) was demonstrated by mass loss and UV–VIS investigations. The drug release profile from our composite coatings proceeds via two stages: an initial burst release (during the first hours), followed by a slower evolution active for the next 72 h, and probably more. Optimized coatings strongly inhibit the growth of tested bacteria (Enterococcus faecalis and Escherichia coli), while the drug incorporation has no impact on the in vitro composite’s cytotoxicity, the coatings proving an excellent biocompatibility sustaining the normal development of MG63 bone-like cells. One may, therefore, consider that the proposed coatings’ composition can open the prospective of a new generation of antimicrobial coatings for implants, but also for nosocomial and other large area contamination prevention.
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Affiliation(s)
- Anita Ioana Visan
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
- Correspondence: (A.I.V.); (I.N.M.); Tel.: +40-21-457-44-91 (I.N.M.)
| | - Carmen Ristoscu
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
| | - Gianina Popescu-Pelin
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
| | - Mihai Sopronyi
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
| | - Consuela Elena Matei
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
| | - Gabriel Socol
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
| | - Mariana Carmen Chifiriuc
- Department of Microbiology, Faculty of Biology, University of Bucharest, 060101 Bucharest, Romania;
- Earth, Environmental and Life Sciences Division, Research Institute of the University of Bucharest, 050567 Bucharest, Romania;
| | - Coralia Bleotu
- Earth, Environmental and Life Sciences Division, Research Institute of the University of Bucharest, 050567 Bucharest, Romania;
- Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu Ave, Sect. 3, PO 77, P.O. Box 201, Bucharest 030304, Romania
| | - David Grossin
- CIRIMAT, CNRS, INP-ENSIACET, Université de Toulouse, 4 allée Emile Monso, 31030 Toulouse, France; (D.G.); (G.B.)
| | - Fabien Brouillet
- CIRIMAT, CNRS, Université Toulouse 3-Paul Sabatier, 35 Chemin des Maraîchers, CEDEX 9, 31062 Toulouse, France; (F.B.); (S.L.G.)
| | - Sylvain Le Grill
- CIRIMAT, CNRS, Université Toulouse 3-Paul Sabatier, 35 Chemin des Maraîchers, CEDEX 9, 31062 Toulouse, France; (F.B.); (S.L.G.)
| | - Ghislaine Bertrand
- CIRIMAT, CNRS, INP-ENSIACET, Université de Toulouse, 4 allée Emile Monso, 31030 Toulouse, France; (D.G.); (G.B.)
| | - Irina Zgura
- National Institute of Materials Physics, 077125 Magurele, Romania;
| | - Rodica Cristescu
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
| | - Ion N. Mihailescu
- National Institute for Laser, Plasma and Radiation Physics, 077125 Magurele, Romania; (C.R.); (G.P.-P.); (M.S.); (C.E.M.); (G.S.); (R.C.)
- Correspondence: (A.I.V.); (I.N.M.); Tel.: +40-21-457-44-91 (I.N.M.)
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Vasiliu S, Racovita S, Gugoasa IA, Lungan MA, Popa M, Desbrieres J. The Benefits of Smart Nanoparticles in Dental Applications. Int J Mol Sci 2021; 22:2585. [PMID: 33806682 PMCID: PMC7961614 DOI: 10.3390/ijms22052585] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 12/18/2022] Open
Abstract
Dentistry, as a branch of medicine, has undergone continuous evolution over time. The scientific world has focused its attention on the development of new methods and materials with improved properties that meet the needs of patients. For this purpose, the replacement of so-called "passive" dental materials that do not interact with the oral environment with "smart/intelligent" materials that have the capability to change their shape, color, or size in response to an externally stimulus, such as the temperature, pH, light, moisture, stress, electric or magnetic fields, and chemical compounds, has received much attention in recent years. A strong trend in dental applications is to apply nanotechnology and smart nanomaterials such as nanoclays, nanofibers, nanocomposites, nanobubbles, nanocapsules, solid-lipid nanoparticles, nanospheres, metallic nanoparticles, nanotubes, and nanocrystals. Among the nanomaterials, the smart nanoparticles present several advantages compared to other materials, creating the possibility to use them in various dental applications, including preventive dentistry, endodontics, restoration, and periodontal diseases. This review is focused on the recent developments and dental applications (drug delivery systems and restoration materials) of smart nanoparticles.
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Affiliation(s)
- Silvia Vasiliu
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, No. 41A, 700487 Iasi, Romania;
| | - Stefania Racovita
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, No. 41A, 700487 Iasi, Romania;
| | - Ionela Aurica Gugoasa
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Prof. Dr. Docent Dimitrie Mangeron Street, No. 73, 700050 Iasi, Romania; (I.A.G.); (M.P.)
| | | | - Marcel Popa
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Prof. Dr. Docent Dimitrie Mangeron Street, No. 73, 700050 Iasi, Romania; (I.A.G.); (M.P.)
- Academy of Romanian Scientists, Splaiul Independentei Street No. 54, 050085 Bucuresti, Romania
| | - Jacques Desbrieres
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Materiaux (IPREM), Pau and Pays de l’Adour University (UPPA), UMR CNRS 5254, Helioparc Pau Pyrenees, 2, av. President Angot, 64053 Pau CEDEX 09, France
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4
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Mok ZH, Proctor G, Thanou M. Emerging nanomaterials for dental treatments. Emerg Top Life Sci 2020; 4:613-625. [PMID: 33200780 PMCID: PMC7752085 DOI: 10.1042/etls20200195] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/20/2020] [Accepted: 10/26/2020] [Indexed: 01/08/2023]
Abstract
The emergence of nanomaterials for dental treatments is encouraged by the nanotopography of the tooth structure, together with the promising benefits of nanomedicine. The use of nanoparticles in dentistry, also termed as 'nanodentistry', has manifested in applications for remineralisation, antimicrobial activity, local anaesthesia, anti-inflammation, osteoconductivity and stem cell differentiation. Besides the applications on dental tissues, nanoparticles have been used to enhance the mechanical properties of dental composites, improving their bonding and anchorage and reducing friction. The small particle size allows for enhanced permeation into deeper lesions, and reduction in porosities of dental composites for higher mechanical strength. The large surface area to volume ratio allows for enhanced bioactivity such as bonding and integration, and more intense action towards microorganisms. Controlled release of encapsulated bioactive molecules such as drugs and growth factors enables them to be delivered more precisely, with site-targeted delivery for localised treatments. These properties have benefitted across multiple fields within dentistry, including periodontology and endodontics and reengineering of dental prosthetics and braces. This review summarises the current literature on the emerging field of nanomaterials for dental treatments.
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Affiliation(s)
- Zi Hong Mok
- School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, London, U.K
| | - Gordon Proctor
- Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, U.K
| | - Maya Thanou
- School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, London, U.K
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Li A, Zhao J, Fu J, Cai J, Zhang P. Recent advances of biomimetic nano-systems in the diagnosis and treatment of tumor. Asian J Pharm Sci 2019; 16:161-174. [PMID: 33995611 PMCID: PMC8105416 DOI: 10.1016/j.ajps.2019.08.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/22/2019] [Accepted: 08/31/2019] [Indexed: 12/18/2022] Open
Abstract
The lack of effective methods of diagnosis and treatment presents a major barrier to combat against tumor. The biomimetic concept is an emerging field that expresses great application potential in tumor fighting. Strategy for combining nano-systems with biomimetic technology has gained increasing attention that is proved bioinspired, environmentally benign, and promising. Herein, we provide an up-to-date review of biomimetic nano-systems as well as their applications in tumor therapy. In addition, the challenges and future directions of biomimetic nano-systems to achieve clinical translation are also pointed out.
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Affiliation(s)
- Anning Li
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jiawei Zhao
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jingru Fu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jia Cai
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Peng Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
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Su J, Wang J, Luo J, Li H. Ultrasound-mediated destruction of vascular endothelial growth factor (VEGF) targeted and paclitaxel loaded microbubbles for inhibition of human breast cancer cell MCF-7 proliferation. Mol Cell Probes 2019; 46:101415. [DOI: 10.1016/j.mcp.2019.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 01/17/2023]
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Fulgione A, Ianniello F, Papaianni M, Contaldi F, Sgamma T, Giannini C, Pastore S, Velotta R, Della Ventura B, Roveri N, Lelli M, Capuano F, Capparelli R. Biomimetic hydroxyapatite nanocrystals are an active carrier for Salmonella bacteriophages. Int J Nanomedicine 2019; 14:2219-2232. [PMID: 30992664 PMCID: PMC6445186 DOI: 10.2147/ijn.s190188] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
PURPOSE The use of bacteriophages represents a valid alternative to conventional antimicrobial treatments, overcoming the widespread bacterial antibiotic resistance phenomenon. In this work, we evaluated whether biomimetic hydroxyapatite (HA) nanocrystals are able to enhance some properties of bacteriophages. The final goal of this study was to demonstrate that biomimetic HA nanocrystals can be used for bacteriophage delivery in the context of bacterial infections, and contribute - at the same time - to enhance some of the biological properties of the same bacteriophages such as stability, preservation, antimicrobial activity, and so on. MATERIALS AND METHODS Phage isolation and characterization were carried out by using Mitomycin C and following double-layer agar technique. The biomimetic HA water suspension was synthesized in order to obtain nanocrystals with plate-like morphology and nanometric dimensions. The interaction of phages with the HA was investigated by dynamic light scattering and Zeta potential analyses. The cytotoxicity and intracellular killing activities of the phage-HA complex were evaluated in human hepatocellular carcinoma HepG2 cells. The bacterial inhibition capacity of the complex was assessed on chicken minced meat samples infected with Salmonella Rissen. RESULTS Our data highlighted that the biomimetic HA nanocrystal-bacteriophage complex was more stable and more effective than phages alone in all tested experimental conditions. CONCLUSION Our results evidenced the important contribution of biomimetic HA nanocrystals: they act as an excellent carrier for bacteriophage delivery and enhance its biological characteristics. This study confirmed the significant role of the mineral HA when it is complexed with biological entities like bacteriophages, as it has been shown for molecules such as lactoferrin.
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Affiliation(s)
- Andrea Fulgione
- Department of Agriculture, University of Naples "Federico II", Portici, Naples, Italy,
| | - Flora Ianniello
- Department of Agriculture, University of Naples "Federico II", Portici, Naples, Italy,
| | - Marina Papaianni
- Department of Agriculture, University of Naples "Federico II", Portici, Naples, Italy,
| | - Felice Contaldi
- Department of Agriculture, University of Naples "Federico II", Portici, Naples, Italy,
| | - Tiziana Sgamma
- Biomolecular Technology Group, School of Allied Health Sciences, De Montfort University, Leicester, UK
| | - Cinzia Giannini
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Bari, Italy
| | - Stella Pastore
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Bari, Italy
| | - Raffaele Velotta
- Department of Physics "Ettore Pancini", University of Naples "Federico II", Portici, Naples, Italy
| | | | | | - Marco Lelli
- Chemical Center Srl, Granarolo dell'Emilia, Bologna, Italy
| | - Federico Capuano
- Department of Food Microbiology, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Naples, Italy,
| | - Rosanna Capparelli
- Department of Agriculture, University of Naples "Federico II", Portici, Naples, Italy,
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Sarda S, Iafisco M, Pascaud-Mathieu P, Adamiano A, Montesi M, Panseri S, Marsan O, Thouron C, Dupret-Bories A, Tampieri A, Drouet C. Interaction of Folic Acid with Nanocrystalline Apatites and Extension to Methotrexate (Antifolate) in View of Anticancer Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12036-12048. [PMID: 30204449 DOI: 10.1021/acs.langmuir.8b02602] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanocrystalline apatites mimicking bone mineral represent a versatile platform for biomedical applications thanks to their similarity to bone apatite and the possibility to (multi)functionalize them so as to provide "à la carte" properties. One relevant domain is in particular oncology, where drug-loaded biomaterials and engineered nanosystems may be used for diagnosis, therapy, or both. In a previous contribution, we investigated the adsorption of doxorubicin onto two nanocrystalline apatite substrates, denoted HA and FeHA (superparamagnetic apatite doped with iron ions), and explored these drug-loaded systems against tumor cells. To widen their applicability in the oncology field, here we examine the interaction between the same two substrates and two other molecules: folic acid (FA), often used as cell targeting agent, and the anticancer drug methotrexate (MTX), an antifolate analogue. In a first stage, we investigated the adsorptive behavior of FA (or MTX) on both substrates, evidencing their specificities. At low concentration, typically under 100 mmol/L, adsorption onto HA was best described using the Sips isotherm model, while the formation of a calcium folate secondary salt was evidenced at high concentration by Raman spectroscopy. Adsorption onto FeHA was instead fitted to the Langmuir model. A larger adsorptive affinity was found for the FeHA substrate compared to HA; accordingly, a faster release was noticed from HA. In vitro tests carried out on human osteosarcoma cell line (SAOS-2) allowed us to evaluate the potential of these compounds in oncology. Finally, in vivo (subcutaneous) implantations in the mouse were run to ascertain the biocompatibility of the two substrates. These results should allow a better understanding of the interactions between FA/MTX and bioinspired nanocrystalline apatites in view of applications in the field of cancer.
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Affiliation(s)
- Stéphanie Sarda
- CIRIMAT, Université de Toulouse, CNRS, 31030 Toulouse , France
| | - Michele Iafisco
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64 , 48018 Faenza , Italy
| | | | - Alessio Adamiano
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64 , 48018 Faenza , Italy
| | - Monica Montesi
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64 , 48018 Faenza , Italy
| | - Silvia Panseri
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64 , 48018 Faenza , Italy
| | - Olivier Marsan
- CIRIMAT, Université de Toulouse, CNRS, 31030 Toulouse , France
| | - Carole Thouron
- CIRIMAT, Université de Toulouse, CNRS, 31030 Toulouse , France
| | - Agnès Dupret-Bories
- CIRIMAT, Université de Toulouse, CNRS, 31030 Toulouse , France
- Chirurgie ORL et cervico-faciale, Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse Oncopole (IUCT-O), Toulouse 31052 , France
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64 , 48018 Faenza , Italy
| | - Christophe Drouet
- CIRIMAT, Université de Toulouse, CNRS, 31030 Toulouse , France
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64 , 48018 Faenza , Italy
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Iafisco M, Varoni E, Battistella E, Pietronave S, Prat M, Roveri N, Rimondini L. The Cooperative Effect of Size and Crystallinity Degree on the Resorption of Biomimetic Hydroxyapatite for Soft Tissue Augmentation. Int J Artif Organs 2018. [DOI: 10.1177/039139881003301101] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Two kinds of hydroxyapatite (HA) crystals were studied as subcutaneous fillers in order to evaluate how their different degree of crystallinity and dimensions influence in vivo resorption. By appropriately adjusting the synthesis temperature, poorly crystalline HA (HApc) and highly crystalline HA (HAhc) were synthesized into clusters of needle-shaped crystals of about 50 nm and plate-shaped crystals of about 100 nm, respectively. The clusters of HApc had larger dimensions (30 μm) than those of HAhc (3 μm). Subcutaneous in vivo inoculations were performed in ten 6-month-old FVB female mice. HAhc underwent complete macroscopic resorption already 4 weeks after the implantation while HApc still showed agglomerates at the eighth week. This unexpected finding may be ascribed to the different size and morphology of the HAhc nanocrystals responsible for a lower aggregation and microcluster dimension than HApc nanocrystals.
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Affiliation(s)
- Michele Iafisco
- Dipartimento di Scienze Mediche, Università del Piemonte Orientale “A. Avogadro”
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum, Università di Bologna, Bologna - Italy
| | - Elena Varoni
- Dipartimento di Scienze Mediche, Università del Piemonte Orientale “A. Avogadro”
| | - Elisa Battistella
- Dipartimento di Scienze Mediche, Università del Piemonte Orientale “A. Avogadro”
| | - Stefano Pietronave
- Dipartimento di Scienze Mediche, Università del Piemonte Orientale “A. Avogadro”
| | - Maria Prat
- Dipartimento di Scienze Mediche, Università del Piemonte Orientale “A. Avogadro”
| | - Norberto Roveri
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum, Università di Bologna, Bologna - Italy
| | - Lia Rimondini
- Dipartimento di Scienze Mediche, Università del Piemonte Orientale “A. Avogadro”
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10
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Degli Esposti L, Carella F, Adamiano A, Tampieri A, Iafisco M. Calcium phosphate-based nanosystems for advanced targeted nanomedicine. Drug Dev Ind Pharm 2018. [PMID: 29528248 DOI: 10.1080/03639045.2018.1451879] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Synthetic calcium phosphates (CaPs) are the most widely accepted bioceramics for the repair and reconstruction of bone tissue defects. The recent advancements in materials science have prompted a rapid progress in the preparation of CaPs with nanometric dimensions, tailored surface characteristics, and colloidal stability opening new perspectives in their use for applications not strictly related to bone. In particular, the employment of CaPs nanoparticles as carriers of therapeutic and imaging agents has recently raised great interest in nanomedicine. CaPs nanoparticles, as well as other kinds of nanoparticles, can be engineered to specifically target the site of the disease (cells or organs), thus minimizing their dispersion in the body and undesired organism-nanoparticles interactions. The most promising and efficient approach to improve their specificity is the 'active targeting', where nanoparticles are conjugated with a targeting moiety able to recognize and bind with high efficacy and selectivity to receptors that are highly expressed only in the therapeutic site. The aim of this review is to give an overview on advanced targeted nanomedicine with a focus on the most recent reports on CaP nanoparticles-based systems, specifically designed for the active targeting. The distinctive characteristics of CaP nanoparticles with respect to the other kinds of nanomaterials used in nanomedicine are also discussed.
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Affiliation(s)
- Lorenzo Degli Esposti
- a Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Faenza , Italy
| | - Francesca Carella
- a Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Faenza , Italy
| | - Alessio Adamiano
- a Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Faenza , Italy
| | - Anna Tampieri
- a Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Faenza , Italy
| | - Michele Iafisco
- a Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Faenza , Italy
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11
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Lelli M, Roveri N, Marzano C, Hoeschele JD, Curci A, Margiotta N, Gandin V, Natile G. Hydroxyapatite nanocrystals as a smart, pH sensitive, delivery system for kiteplatin. Dalton Trans 2018; 45:13187-95. [PMID: 27397134 DOI: 10.1039/c6dt01976e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Hydroxyapatite (HA) nanocrystals are important inorganic constituents of biological hard tissues in vertebrates and have been proposed as a bone substitute or a coating material for prostheses in biomedicine. Hydroxyapatite is also amenable for its capacity to bind to a great variety of biomolecules and therapeutic agents. As drug carriers, apatite nanoparticles also have the advantage of pH dependent solubility and low toxicity. Thus HA nanoparticles are negligibly soluble at physiological pH but their dissolution is accelerated at lower pH such as that typically found in the vicinity of tumors. In the present study we have investigated the adsorption on and the release from biomimetic HA nanoparticles of two platinum derivatives of cis-1,4-diaminocyclohexane ([PtX2(cis-1,4-DACH)], X2 = Cl2 (1) and 1,1-cyclobutanedicarboxylate (CBDCA, 2)). The first of the two compounds proved to be active against colon cancer cells also resistant to oxaliplatin. The release has been investigated as a function of pH to mimic the different physiological environments of healthy tissues and tumors, and the in vitro cytotoxicity of the releasates from the HA matrices has been assessed against various human cancer cell lines. The results fully confirmed the potential of 1-loaded HA nanoparticles as bone-specific drug delivery devices.
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Affiliation(s)
- Marco Lelli
- Bioecoactive S.r.l, via San Donato n.5, 40050 Granarolo, Italy
| | - Norberto Roveri
- Bioecoactive S.r.l, via San Donato n.5, 40050 Granarolo, Italy
| | - Cristina Marzano
- Dipartimento di Scienze del Farmaco, Università di Padova, Via Marzolo 5, 35131, Padova, Italy.
| | - James D Hoeschele
- Department of Chemistry, Eastern Michigan University, 48197 Ypsilanti, MI, USA
| | - Alessandra Curci
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy.
| | - Nicola Margiotta
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy.
| | - Valentina Gandin
- Dipartimento di Scienze del Farmaco, Università di Padova, Via Marzolo 5, 35131, Padova, Italy.
| | - Giovanni Natile
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy.
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Rea I, Terracciano M, De Stefano L. Synthetic vs Natural: Diatoms Bioderived Porous Materials for the Next Generation of Healthcare Nanodevices. Adv Healthc Mater 2017; 6. [PMID: 28026914 DOI: 10.1002/adhm.201601125] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/04/2016] [Indexed: 12/13/2022]
Abstract
Nanostructured porous materials promise a next generation of innovative devices for healthcare and biomedical applications. The fabrication of such materials generally requires complex synthesis procedures, not always available in laboratories or sustainable in industries, and has adverse environmental impact. Nanosized porous materials can also be obtained from natural resources, which are an attractive alternative approach to man-made fabrication. Biogenic nanoporous silica from diatoms, and diatomaceous earths, constitutes largely available, low-cost reservoir of mesoporous nanodevices that can be engineered for theranostic applications, ranging from subcellular imaging to drug delivery. In this progress report, main experiences on nature-derived nanoparticles with healthcare and biomedical functionalities are reviewed and critically analyzed in search of a new collection of biocompatible porous nanomaterials.
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Affiliation(s)
- Ilaria Rea
- Via P. Castellino 111 Napoli 80131 Italy
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Hegazy SA, Salama RI. Antiplaque and remineralizing effects of Biorepair mouthwash: A comparative clinical trial. PEDIATRIC DENTAL JOURNAL 2016. [DOI: 10.1016/j.pdj.2016.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Influence of Calcium Phosphate and Apatite Containing Products on Enamel Erosion. ScientificWorldJournal 2016; 2016:7959273. [PMID: 27430013 PMCID: PMC4939184 DOI: 10.1155/2016/7959273] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/16/2016] [Indexed: 11/18/2022] Open
Abstract
For the purpose of erosion prevention the present study aimed to compare the efficacy of two biomimetic products and a fluoride solution to optimize the protective properties of the pellicle. After 1 min of in situ pellicle formation on bovine enamel slabs, 8 subjects adopted CPP-ACP (GC Tooth Mousse), a mouthwash with hydroxyapatite microclusters (Biorepair), or a fluoride based mouthwash (elmex Kariesschutz) for 1 min each. Afterwards, samples were exposed in the oral cavity for 28 min. Native enamel slabs and slabs exposed to the oral cavity for 30 min without any rinse served as controls. After oral exposure, slabs were incubated in HCl (pH values 2, 2.3, and 3) for 120 s and kinetics of calcium and phosphate release were measured photometrically; representative samples were evaluated by SEM and TEM. The physiological pellicle reduced demineralization at all pH values; the protective effect was enhanced by fluoride. The biomimetic materials also reduced ion release but their effect was less pronounced. SEM indicated no layer formation after use of the different products. However, TEM confirmed the potential accumulation of mineral components at the pellicle surface. The tested products improve the protective properties of the in situ pellicle but not as effectively as fluorides.
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Rong ZJ, Yang LJ, Cai BT, Zhu LX, Cao YL, Wu GF, Zhang ZJ. Porous nano-hydroxyapatite/collagen scaffold containing drug-loaded ADM-PLGA microspheres for bone cancer treatment. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:89. [PMID: 26975746 DOI: 10.1007/s10856-016-5699-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 02/29/2016] [Indexed: 06/05/2023]
Abstract
To develop adriamycin (ADM)-encapsulated poly(lactic-co-glycolic acid) (PLGA) nanoparticles in a porous nano-hydroxyapatite/collagen scaffold (ADM-PLGA-NHAC). To provide novel strategies for future treatment of osteosarcoma, the properties of the scaffold, including its in vitro extended-release properties, the inhibition effects of ADM-PLGA-NHAC on the osteosarcoma MG63 cells, and its bone repair capacity, were investigated in vivo and in vitro. The PLGA copolymer was utilized as a drug carrier to deliver ADM-PLGA nanoparticles (ADM-PLGA-NP). Porous nano-hydroxyapatite and collagen were used to materials to produce the porous nano-hydroxyapatite/collagen scaffold (NHAC), into which the ADM-PLGA-NP was loaded. The performance of the drug-carrying scaffold was assessed using multiple techniques, including scanning electron microscopy and in vitro extended release. The antineoplastic activities of scaffold extracts on the human osteosarcoma MG63 cell line were evaluated in vitro using the cell counting kit-8 (CCK8) method and live-dead cell staining. The bone repair ability of the scaffold was assessed based on the establishment of a femoral condyle defect model in rabbits. ADM-PLGA-NHAC and NHAC were implanted into the rat muscle bag for immune response experiments. A tumor-bearing nude mice model was created, and the TUNEL and HE staining results were observed under optical microscopy to evaluate the antineoplastic activity and toxic side effects of the scaffold. The composite scaffold demonstrated extraordinary extended-release properties, and its extracts also exhibited significant inhibition of the growth of osteosarcoma MG63 cells. In the bone repair experiment, no significant difference was observed between ADM-PLGA-NHAC and NHAC by itself. In the immune response experiments, ADM-PLGA-NHAC exhibited remarkable biocompatibility. The in vivo antitumor experiment revealed that the implantation of ADM-PLGA-NHAC in the tumor resulted in a improved antineoplastic effect and fewer adverse side effects than direct intraperitoneal injection of ADM. The ADM-PLGA-NHAC developed in this study exhibited excellent extended-release drug properties, bone repairing and antineoplastic efficacy, which make it a promising osteoconductivity material with the capability to inhibit osteosarcoma.
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Affiliation(s)
- Zi-Jie Rong
- Department of Orthopaedics, Zhu Jiang Hospital, Southern Medical University, No. 253, Gongye Big Road, Guangzhou, 510280, China
- Department of Orthopaedics, Zhaoqing First People's Hospital, Zhaoqing, 526020, China
| | - Lian-Jun Yang
- Department of Orthopaedics, Zhu Jiang Hospital, Southern Medical University, No. 253, Gongye Big Road, Guangzhou, 510280, China
- Department of Orthopaedics, Guangzhou Red Cross Hospital, Guangzhou, 510220, China
- Department of Orthopaedics, The Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510240, China
| | - Bao-Ta Cai
- Department of Orthopaedics, Zhu Jiang Hospital, Southern Medical University, No. 253, Gongye Big Road, Guangzhou, 510280, China
| | - Li-Xin Zhu
- Department of Orthopaedics, Zhu Jiang Hospital, Southern Medical University, No. 253, Gongye Big Road, Guangzhou, 510280, China.
| | - Yan-Lin Cao
- Department of Orthopaedics, Zhu Jiang Hospital, Southern Medical University, No. 253, Gongye Big Road, Guangzhou, 510280, China
| | - Guo-Feng Wu
- Department of Orthopaedics, Zhu Jiang Hospital, Southern Medical University, No. 253, Gongye Big Road, Guangzhou, 510280, China
| | - Zan-Jie Zhang
- Department of Orthopaedics, Zhu Jiang Hospital, Southern Medical University, No. 253, Gongye Big Road, Guangzhou, 510280, China
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Di Mauro V, Iafisco M, Salvarani N, Vacchiano M, Carullo P, Ramírez-Rodríguez GB, Patrício T, Tampieri A, Miragoli M, Catalucci D. Bioinspired negatively charged calcium phosphate nanocarriers for cardiac delivery of MicroRNAs. Nanomedicine (Lond) 2016; 11:891-906. [DOI: 10.2217/nnm.16.26] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aim: To develop biocompatible and bioresorbable negatively charged calcium phosphate nanoparticles (CaP-NPs) as an innovative therapeutic system for the delivery of bioactive molecules to the heart. Materials & methods: CaP-NPs were synthesized via a straightforward one-pot biomineralization-inspired protocol employing citrate as a stabilizing agent and regulator of crystal growth. CaP-NPs were administered to cardiac cells in vitro and effects of treatments were assessed. CaP-NPs were administered in vivo and delivery of microRNAs was evaluated. Results: CaP-NPs efficiently internalized into cardiomyocytes without promoting toxicity or interfering with any functional properties. CaP-NPs successfully encapsulated synthetic microRNAs, which were efficiently delivered into cardiac cells in vitro and in vivo. Conclusion: CaP-NPs are a safe and efficient drug-delivery system for potential therapeutic treatments of polarized cells such as cardiomyocytes.
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Affiliation(s)
- Vittoria Di Mauro
- National Research Council (CNR), Institute of Genetics & Biomedical Research, Milan Unit, Milan 20138, Italy
- Humanitas Clinical & Research Center, Rozzano (MI) 20089, Italy
| | - Michele Iafisco
- National Research Council (CNR), Institute of Science & Technology for Ceramics (ISTEC) 48018 Faenza (RA), Italy
| | - Nicolò Salvarani
- National Research Council (CNR), Institute of Genetics & Biomedical Research, Milan Unit, Milan 20138, Italy
- Humanitas Clinical & Research Center, Rozzano (MI) 20089, Italy
| | - Marco Vacchiano
- National Research Council (CNR), Institute of Genetics & Biomedical Research, Milan Unit, Milan 20138, Italy
| | - Pierluigi Carullo
- National Research Council (CNR), Institute of Genetics & Biomedical Research, Milan Unit, Milan 20138, Italy
- Humanitas Clinical & Research Center, Rozzano (MI) 20089, Italy
| | | | - Tatiana Patrício
- National Research Council (CNR), Institute of Science & Technology for Ceramics (ISTEC) 48018 Faenza (RA), Italy
| | - Anna Tampieri
- National Research Council (CNR), Institute of Science & Technology for Ceramics (ISTEC) 48018 Faenza (RA), Italy
| | - Michele Miragoli
- National Research Council (CNR), Institute of Genetics & Biomedical Research, Milan Unit, Milan 20138, Italy
- Humanitas Clinical & Research Center, Rozzano (MI) 20089, Italy
| | - Daniele Catalucci
- National Research Council (CNR), Institute of Genetics & Biomedical Research, Milan Unit, Milan 20138, Italy
- Humanitas Clinical & Research Center, Rozzano (MI) 20089, Italy
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Srivastava SK, Medina-Sánchez M, Koch B, Schmidt OG. Medibots: Dual-Action Biogenic Microdaggers for Single-Cell Surgery and Drug Release. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:832-7. [PMID: 26619085 DOI: 10.1002/adma.201504327] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/07/2015] [Indexed: 05/03/2023]
Abstract
An innovative concept for the fabrication of dual-action microrobots capable of performing single-cell microsurgery along with a site-directed drug-delivery feature is presented. These multi-action plant-derived biocompatible "medibots" can play a pivotal role in understanding micromotor interactions at the cellular level, aiming toward the destruction of harmful cells (like cancer) among others in living systems.
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Affiliation(s)
- Sarvesh Kumar Srivastava
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
| | - Mariana Medina-Sánchez
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
| | - Britta Koch
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
| | - Oliver G Schmidt
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, 01069, Dresden, Germany
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18
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Cheng L, Zhang K, Weir MD, Melo MAS, Zhou X, Xu HHK. Nanotechnology strategies for antibacterial and remineralizing composites and adhesives to tackle dental caries. Nanomedicine (Lond) 2015; 10:627-41. [PMID: 25723095 DOI: 10.2217/nnm.14.191] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dental caries is the most widespread disease and an economic burden. Nanotechnology is promising to inhibit caries by controlling biofilm acids and enhancing remineralization. Nanoparticles of silver were incorporated into composites/adhesives, along with quaternary ammonium methacrylates (QAMs), to combat biofilms. Nanoparticles of amorphous calcium phosphate (NACP) released calcium/phosphate ions, remineralized tooth-lesions and neutralized acids. By combining nanoparticles of silver/QAM/NACP, a new class of composites and adhesives with antibacterial and remineralization double benefits was developed. Various other nanoparticles including metal and oxide nanoparticles such as ZnO and TiO2, as well as polyethylenimine nanoparticles and their antibacterial capabilities in dental resins were also reviewed. These nanoparticles are promising for incorporation into dental composites/cements/sealants/bases/liners/adhesives. Therefore, nanotechnology has potential to significantly improve restorative and preventive dentistry.
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Affiliation(s)
- Lei Cheng
- Department of Endodontics, Prosthodontics and Operative Dentistry, Biomaterials & Tissue Engineering Division, University of Maryland Dental School, Baltimore, MD 21201, USA
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19
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Oltolina F, Gregoletto L, Colangelo D, Gómez-Morales J, Delgado-López JM, Prat M. Monoclonal antibody-targeted fluorescein-5-isothiocyanate-labeled biomimetic nanoapatites: a promising fluorescent probe for imaging applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1766-1775. [PMID: 25602940 DOI: 10.1021/la503747s] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Multifunctional biomimetic nanoparticles (NPs) are acquiring increasing interest as carriers in medicine and basic research since they can efficiently combine labels for subsequent tracking, moieties for specific cell targeting, and bioactive molecules, e.g., drugs. In particular, because of their easy synthesis, low cost, good biocompatibility, high resorbability, easy surface functionalization, and pH-dependent solubility, nanocrystalline apatites are promising candidates as nanocarriers. This work describes the synthesis and characterization of bioinspired apatite nanoparticles to be used as fluorescent nanocarriers targeted against the Met/hepatocyte growth factor receptor, which is considered a tumor associated cell surface marker of many cancers. To this aim the nanoparticles have been labeled with Fluorescein-5-isothiocyanate (FITC) by simple isothermal adsorption, in the absence of organic, possibly toxic, molecules, and then functionalized with a monoclonal antibody (mAb) directed against such a receptor. Direct labeling of the nanoparticles allowed tracking the moieties with spatiotemporal resolution and thus following their interaction with cells, expressing or not the targeted receptor, as well as their fate in vitro. Cytofluorometry and confocal microscopy experiments showed that the functionalized nanocarriers, which emitted a strong fluorescent signal, were rapidly and specifically internalized in cells expressing the receptor. Indeed, we found that, once inside the cells expressing the receptor, mAb-functionalized FITC nanoparticles partially dissociated in their two components, with some mAbs being recycled to the cell surface and the FITC-labeled nanoparticles remaining in the cytosol. This work thus shows that FITC-labeled nanoapatites are very promising probes for targeted cell imaging applications.
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Affiliation(s)
- Francesca Oltolina
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale "Amedeo Avogadro" , Via Solaroli 17, 28100 Novara, Italy
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Alessandri Bonetti G, Pazzi E, Zanarini M, Marchionni S, Checchi L. The effect of zinc-carbonate hydroxyapatite versus fluoride on enamel surfaces after interproximal reduction. SCANNING 2014; 36:356-361. [PMID: 24902674 DOI: 10.1002/sca.21125] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/23/2013] [Accepted: 10/02/2013] [Indexed: 06/03/2023]
Abstract
The aim of this study was to qualitatively investigate the effects of a zinc-carbonate hydroxyapatite (Zn-CHA) containing toothpaste on stripped enamel morphology in a pH cycling model in vitro and to compare the efficacy of this toothpaste versus fluoride one which still represent the gold standard to remineralize early enamel lesions. Twenty-one extracted lower incisors underwent to interproximal enamel reduction with metal strips (Horico 80 µm) on both mesial and distal surfaces. They were then sliced into mesial and distal halves and the 42 samples obtained were randomly assigned to 3 groups of 14 enamel specimens each. For 8 days, teeth were placed in lactic acid solution for 2 h three times a day with 2 h distilled water preservation in between. After each demineralization bath, samples of Group A were brushed with Zn-CHA containing toothpaste while samples of Group B were brushed with 1,400 ppm fluoride dentifrice for 5 min before immersion into water. Group C of untreated samples served as control. All the samples were then prepared for scanning electron microscopy (SEM) analysis. A score rating system was used to perform a non-parametric statistical analysis. No statistically significant differences were found between the samples brushed with fluoride toothpaste and those untreated (Groups B and C) where the highest grade of damage was found, while the lowest grade was recorded in the samples brushed with Zn-CHA (Group A) and there was a statistically significant difference between this group and the other two groups.
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21
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Nocerino N, Fulgione A, Iannaccone M, Tomasetta L, Ianniello F, Martora F, Lelli M, Roveri N, Capuano F, Capparelli R. Biological activity of lactoferrin-functionalized biomimetic hydroxyapatite nanocrystals. Int J Nanomedicine 2014; 9:1175-84. [PMID: 24623976 PMCID: PMC3949719 DOI: 10.2147/ijn.s55060] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The emergence of bacterial strains resistant to antibiotics is a general public health problem. Progress in developing new molecules with antimicrobial properties has been made. In this study, we evaluated the biological activity of a hybrid nanocomposite composed of synthetic biomimetic hydroxyapatite surface-functionalized by lactoferrin (LF-HA). We evaluated the antimicrobial, anti-inflammatory, and antioxidant properties of LF-HA and found that the composite was active against both Gram-positive and Gram-negative bacteria, and that it modulated proinflammatory and anti-inflammatory responses and enhanced antioxidant properties as compared with LF alone. These results indicate the possibility of using LF-HA as an antimicrobial system and biomimetic hydroxyapatite as a candidate for innovative biomedical applications.
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Affiliation(s)
- Nunzia Nocerino
- Department of Agriculture Special Biotechnology Center Federico II, CeBIOTEC Biotechnology, University of Naples Federico II, Naples, Italy
| | - Andrea Fulgione
- Department of Agriculture Special Biotechnology Center Federico II, CeBIOTEC Biotechnology, University of Naples Federico II, Naples, Italy
| | - Marco Iannaccone
- Department of Agriculture Special Biotechnology Center Federico II, CeBIOTEC Biotechnology, University of Naples Federico II, Naples, Italy
| | - Laura Tomasetta
- Department of Agriculture Special Biotechnology Center Federico II, CeBIOTEC Biotechnology, University of Naples Federico II, Naples, Italy
| | - Flora Ianniello
- Department of Agriculture Special Biotechnology Center Federico II, CeBIOTEC Biotechnology, University of Naples Federico II, Naples, Italy
| | - Francesca Martora
- Department of Agriculture Special Biotechnology Center Federico II, CeBIOTEC Biotechnology, University of Naples Federico II, Naples, Italy
| | - Marco Lelli
- Department of Chemistry, G Ciamician, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Norberto Roveri
- Department of Chemistry, G Ciamician, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | | | - Rosanna Capparelli
- Department of Agriculture Special Biotechnology Center Federico II, CeBIOTEC Biotechnology, University of Naples Federico II, Naples, Italy
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22
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Iafisco M, Delgado-Lopez JM, Varoni EM, Tampieri A, Rimondini L, Gomez-Morales J, Prat M. Cell surface receptor targeted biomimetic apatite nanocrystals for cancer therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:3834-44. [PMID: 23606568 DOI: 10.1002/smll.201202843] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 01/28/2013] [Indexed: 05/24/2023]
Abstract
Nanosized drug carriers functionalized with moieties specifically targeting tumor cells are promising tools in cancer therapy, due to their ability to circulate in the bloodstream for longer periods and their selectivity for tumor cells, enabling the sparing of healthy tissues. Because of its biocompatibility, high bioresorbability, and responsiveness to pH changes, synthetic biomimetic nanocrystalline apatites are used as nanocarriers to produce multifunctional nanoparticles, by coupling them with the chemotherapeutic drug doxorubicin (DOXO) and the DO-24 monoclonal antibody (mAb) directed against the Met/Hepatocyte Growth Factor receptor (Met/HGFR), which is over-expressed on different types of carcinomas and thus represents a useful tumor target. The chemical-physical features of the nanoparticles are fully investigated and their interaction with cells expressing (GTL-16 gastric carcinoma line) or not expressing (NIH-3T3 fibroblasts) the Met/HGFR is analyzed. Functionalized nanoparticles specifically bind to and are internalized in cells expressing the receptor (GTL-16) but not in the ones that do not express it (NIH-3T3). Moreover they discharge DOXO in the targeted GTL-16 cells that reach the nucleus and display cytotoxicity as assessed in an MTT assay. Two different types of ternary nanoparticles are prepared, differing for the sequence of the functionalization steps (adsorption of DOXO first and then mAb or vice versa), and it is found that the ones in which mAb is adsorbed first are more efficient under all the examined aspects (binding, internalization, cytotoxicity), possibly because of a better mAb orientation on the nanoparticle surface. These multifunctional nanoparticles could thus be useful instruments for targeted local or systemic drug delivery, allowing a reduction in the therapeutic dose of the drug and thus adverse side effects. Moreover, this work opens new perspectives in the use of nanocrystalline apatites as a new platform for theranostic applications in nanomedicine.
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Affiliation(s)
- Michele Iafisco
- Università del Piemonte Orientale, Dipartimento di Scienze della Salute, Via Solaroli 17, 28100 Novara, Italy
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Iafisco M, Ruffini A, Adamiano A, Sprio S, Tampieri A. Biomimetic magnesium-carbonate-apatite nanocrystals endowed with strontium ions as anti-osteoporotic trigger. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 35:212-9. [PMID: 24411371 DOI: 10.1016/j.msec.2013.11.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/30/2013] [Accepted: 11/02/2013] [Indexed: 11/16/2022]
Abstract
The present work investigates the preparation of biomimetic nanocrystalline apatites co-substituted with Mg, CO3 and Sr to be used as starting materials for the development of nanostructured bio-devices for regeneration of osteoporotic bone. Biological-like amounts of Mg and CO3 ions were inserted in the apatite structure to mimic the composition of bone apatite, whereas the addition of increasing quantities of Sr ions, from 0 up to 12 wt.%, as anti-osteoporotic agent, was evaluated. The chemical-physical features, the morphology, the degradation rates, the ion release kinetics as well as the in vitro bioactivity of the as-prepared apatites were fully evaluated. The results indicated that the incorporation of 12 wt.% of Sr can be viewed as a threshold for the structural stability of Mg-CO3-apatite. Indeed, incorporation of lower quantity of Sr did not induce considerable variations in the chemical structure of Mg-CO3-apatite, while when the Sr doping extent reached 12 wt.%, a dramatically destabilizing effect was detected on the crystal structure thus yielding alteration of the symmetry and distortion of the PO4. As a consequence, this apatite exhibited the fastest degradation kinetic and the highest amount of Sr ions released when tested in physiological conditions. In this respect, the surface crystallization of new calcium phosphate phase when immersed in physiological-like solution occurred by different mechanisms and extents due to the different structural chemistry of the variously doped apatites. Nevertheless, all the apatites synthesized in this work exhibited in vitro bioactivity demonstrating their potential use to develop biomedical devices with anti-osteoporotic functionality.
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Affiliation(s)
- Michele Iafisco
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy.
| | - Andrea Ruffini
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy
| | - Alessio Adamiano
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy
| | - Simone Sprio
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018 Faenza, Italy
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Gashti MP, Bourquin M, Stir M, Hulliger J. Glutamic acid inducing kidney stone biomimicry by a brushite/gelatin composite. J Mater Chem B 2013; 1:1501-1508. [DOI: 10.1039/c3tb00088e] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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25
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Iafisco M, Palazzo B, Ito T, Otsuka M, Senna M, Delgado-Lopez JM, Gomez-Morales J, Tampieri A, Prat M, Rimondini L. Preparation of core-shell poly(L-lactic) acid-nanocrystalline apatite hollow microspheres for bone repairing applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2659-2669. [PMID: 22864504 DOI: 10.1007/s10856-012-4732-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 07/23/2012] [Indexed: 06/01/2023]
Abstract
In this paper, hybrid inorganic-organic core-shell hollow microspheres, made of poly(L-lactic acid) (PLLA) and biomimetic nano apatites (HA), were prepared from biodegradable and biocompatible substances, suitable for bone tissue applications. Preparation is started from Pickering emulsification, i.e., solid particle-stabilized emulsions in the absence of any molecular surfactant, where solid particles adsorbed to an oil-water interface. Stable oil-in-water emulsions were produced using biomimetic 20 nm sized HA nanocrystals as particulate emulsifier and a dichloromethane (CH(2)Cl(2)) solution of PLLA as oil phase. Hybrid hollow PLLA microspheres at three different HA nanocrystals surface coverage, ranging from 10 to 50 μm, were produced. The resulting materials were completely characterized with spectroscopic, calorimetric and microscopic techniques and the cytocompatibility was established by indirect contact tests with both fibroblasts and osteoblasts and direct contact with these latter. They displayed a high level of cytocompatibility and thus represent promising materials for drug delivery systems, cell carriers and scaffolds for regeneration of bone useful in the treatment of orthopaedic, maxillofacial and dental fields.
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Affiliation(s)
- Michele Iafisco
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, Novara, Italy.
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Crystallization of bioinspired citrate-functionalized nanoapatite with tailored carbonate content. Acta Biomater 2012; 8:3491-9. [PMID: 22579712 DOI: 10.1016/j.actbio.2012.04.046] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2012] [Revised: 03/26/2012] [Accepted: 04/30/2012] [Indexed: 11/24/2022]
Abstract
Novel citrate-functionalized carbonate-apatite nanoparticles with mean lengths ranging from 20 to 100 nm were synthesized by a thermal-decomplexing batch method. Needle-like and plate-shaped morphologies were obtained in the absence and presence of sodium carbonate in the precipitation medium, respectively. The precipitation time and the presence of sodium carbonate strongly affect the chemical composition as well as the dimensions and the crystallinity of nanoparticles. At a short precipitation time, poorly crystalline apatites of 100 nm mean length with a low degree of carbonation (1.5% w/w, mainly in B-position) and a high citrate content (5.9% w/w) were precipitated. This citrate content is close to that recently measured in bone apatite. When increasing the precipitation time up to 96 h the mean length and the citrate content progressively decrease and at the same time the nanoparticles become more crystalline. They are composed of a well-ordered carbonate-substituted apatitic core embedded in a non-apatitic hydrated layer containing citrate ions. This layer progressively transforms into a more stable apatite domain upon maturation in aqueous media. The nanoparticles displayed excellent compatibility properties in cell biological systems, since they were not cytotoxic to a mouse carcinoma cell line when added to a final concentration of 100 μgml(-1). This work provides new insights into the role of citrate on the crystallization of nanoapatites. Moreover, the synthesized nanoparticles are promising materials for use as nanocarriers for local targeted drug delivery systems as well as building blocks for the preparation of nanostructured scaffolds for cells in bone tissue engineering.
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Influence of a mouthwash containing hydroxyapatite microclusters on bacterial adherence in situ. Clin Oral Investig 2012; 17:805-14. [PMID: 22782257 DOI: 10.1007/s00784-012-0781-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 06/21/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVE The aim of the present study was to investigate the efficacy of a new preparation in dental prophylaxis containing zinc-carbonate hydroxyapatite microclusters (Biorepair) for oral biofilm management. METHODS AND MATERIALS Initial biofilm formation was carried out in situ with bovine enamel slabs fixed to individual upper jaw splints worn by six subjects. Rinses with the customary preparation as well as with subfractions (hydroxyapatite microclusters in saline solution; liquid phase without particles) were adopted for 1 min in situ after 1 min of pellicle formation, and the bacterial colonization was recorded after 6 h and 12 h, respectively. Rinses with chlorhexidine served as a reference. The adherent microorganisms were quantified and visualized using DAPI staining and live-dead staining (BacLight). Furthermore, the effects on Streptococcus mutans bacteria were tested in vitro (BacLight). RESULTS Application of the customary preparation and of the separate components distinctly reduced the initial bacterial colonization of the enamel surface in situ as visualized and quantified with all techniques. After 12 h, 1.3 × 10(7) ± 2.0 × 10(7) bacteria/cm² were detected on unrinsed control samples with DAPI staining; 2.4 × 10(6) ± 3.3 × 10(6) after application of Biorepair (12 h after CHX-rinse; 1.3 × 10(5) ± 9.2 × 10(4)). Also, pure hydroxyapatite microclusters in saline solution (2.1 × 10(6) ± 3.0 × 10(6)) as well as the liquid phase without particles (5.1 × 10(5) ± 3.3 × 10(5)) reduced the amount of adherent bacteria. Furthermore, antimicrobial effects on S. mutans were observed in vitro. CONCLUSION The preparation is an effective compound for biofilm management in the oral cavity due to antiadherent and antibacterial effects. CLINICAL RELEVANCE The tested mouthrinse seems to be a reasonable amendment for dental prophylaxis.
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Silica xerogels and hydroxyapatite nanocrystals for the local delivery of platinum-bisphosphonate complexes in the treatment of bone tumors: a mini-review. J Inorg Biochem 2012; 117:237-47. [PMID: 22824154 DOI: 10.1016/j.jinorgbio.2012.06.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 05/24/2012] [Accepted: 06/06/2012] [Indexed: 11/20/2022]
Abstract
The present review focuses on the "drug targeting and delivery" approach of the selective transportation of cisplatin to bone tumors and bone metastases. This aim is realized by binding cisplatin to (bis)phosphonate ligands or their derivatives. Geminal bisphosphonates are in clinical use in the treatment of several bone-related diseases because of their high affinity for calcium ions and hence for bones. Platinum-bisphosphonate complexes may be easily loaded onto calcium-containing inorganic matrices, such as calcium-doped sol-gel derived silica xerogels and hydroxyapatite nanocrystals, for local administration at the site of the bone malignancy. The composites may be used as bone-filler materials that, in addition to their action as bone substitutes, can also act as controlled platinum-drug releasing agents. The release kinetics of the drug can be tailored for specific therapeutic applications modulating the physico-chemical features of the inorganic matrices. Moreover, apatite nanocrystals loaded with platinum-bisphosphonate prodrugs can be used as injectable material for nanomedical applications (e.g. intracellular drug delivery).
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Electrospun nanostructured fibers of collagen-biomimetic apatite on titanium alloy. Bioinorg Chem Appl 2012; 2012:123953. [PMID: 22400013 PMCID: PMC3287036 DOI: 10.1155/2012/123953] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 10/17/2011] [Indexed: 02/07/2023] Open
Abstract
Titanium and its alloys are currently the mainly used materials to manufacture orthopaedic implants due to their excellent mechanical properties and corrosion resistance. Although these materials are bioinert, the improvement of biological properties (e.g., bone implant contact) can be obtained by the application of a material that mimics the bone extracellular matrix. To this aim, this work describes a new method to produce nanostructured collagen-apatite composites on titanium alloy substrate, by combining electrospinning and biomimetic mineralization. The characterization results showed that the obtained mineralized scaffolds have morphological, structural, and chemical compositional features similar to natural bone extracellular matrix. Finally, the topographic distribution of the chemical composition in the mineralized matrix evaluated by Fourier Transform Infrared microspectroscopy demonstrated that the apatite nanocrystals cover the collagen fibers assembled by the electrospinning.
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Al-Kattan A, Girod-Fullana S, Charvillat C, Ternet-Fontebasso H, Dufour P, Dexpert-Ghys J, Santran V, Bordère J, Pipy B, Bernad J, Drouet C. Biomimetic nanocrystalline apatites: Emerging perspectives in cancer diagnosis and treatment. Int J Pharm 2012; 423:26-36. [DOI: 10.1016/j.ijpharm.2011.07.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Revised: 07/04/2011] [Accepted: 07/05/2011] [Indexed: 10/18/2022]
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Iafisco M, Varoni E, Di Foggia M, Pietronave S, Fini M, Roveri N, Rimondini L, Prat M. Conjugation of hydroxyapatite nanocrystals with human immunoglobulin G for nanomedical applications. Colloids Surf B Biointerfaces 2012; 90:1-7. [DOI: 10.1016/j.colsurfb.2011.09.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 07/29/2011] [Accepted: 09/06/2011] [Indexed: 10/17/2022]
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Iafisco M, Palazzo B, Martra G, Margiotta N, Piccinonna S, Natile G, Gandin V, Marzano C, Roveri N. Nanocrystalline carbonate-apatites: role of Ca/P ratio on the upload and release of anticancer platinum bisphosphonates. NANOSCALE 2012; 4:206-217. [PMID: 22075933 DOI: 10.1039/c1nr11147g] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In the present study two nanocrystalline apatites have been investigated as bone-specific drug delivery devices to be used for treatment of bone tumors either by local implantation or by injection. In order to assess how the Ca/P ratio can influence the adsorption and release of anticancer platinum-bisphosphonate complexes, two kinds of apatite nanocrystals having different Ca/P ratios but similar morphologies, degree of crystallinity, and surface areas have been synthesized and characterized. The two platinum-bisphosphonate complexes considered were the bis-{ethylenediamineplatinum(ii)}-2-amino-1-hydroxyethane-1,1-diyl-bisphosphonate and the bis-{ethylenediamineplatinum(ii)}medronate. The Ca/P ratio plays an important role in the adsorption as well as in the release of the two drugs. In fact, the apatite with a higher Ca/P ratio showed greater affinity for both platinum complexes. Also the chemical structure of the two Pt complexes appreciably affects their affinity towards as well as their release from the two kinds of apatites. In particular, the platinum complex whose bisphosphonate contains a free aminic group showed greater upload and smaller release. The cytotoxicity of the Pt complexes released from the apatite was tested against human cervical, colon, and lung cancer cells as well as against osteosarcoma cells. In agreement with previous work, the Pt complexes released were found to be more cytotoxic than the unmodified complexes.
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Affiliation(s)
- Michele Iafisco
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy.
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Biomimesis and biomorphic transformations: New concepts applied to bone regeneration. J Biotechnol 2011; 156:347-55. [DOI: 10.1016/j.jbiotec.2011.07.034] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 07/25/2011] [Accepted: 07/28/2011] [Indexed: 12/29/2022]
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Roveri N, Iafisco M. Evolving application of biomimetic nanostructured hydroxyapatite. Nanotechnol Sci Appl 2010; 3:107-25. [PMID: 24198477 PMCID: PMC3781698 DOI: 10.2147/nsa.s9038] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
By mimicking Nature, we can design and synthesize inorganic smart materials that are reactive to biological tissues. These smart materials can be utilized to design innovative third-generation biomaterials, which are able to not only optimize their interaction with biological tissues and environment, but also mimic biogenic materials in their functionalities. The biomedical applications involve increasing the biomimetic levels from chemical composition, structural organization, morphology, mechanical behavior, nanostructure, and bulk and surface chemical-physical properties until the surface becomes bioreactive and stimulates cellular materials. The chemical-physical characteristics of biogenic hydroxyapatites from bone and tooth have been described, in order to point out the elective sides, which are important to reproduce the design of a new biomimetic synthetic hydroxyapatite. This review outlines the evolving applications of biomimetic synthetic calcium phosphates, details the main characteristics of bone and tooth, where the calcium phosphates are present, and discusses the chemical-physical characteristics of biomimetic calcium phosphates, methods of synthesizing them, and some of their biomedical applications.
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Affiliation(s)
- Norberto Roveri
- Laboratory of Environmental and Biological Structural Chemistry (LEBSC), Dipartimento di Chimica ‘G. Ciamician’, Alma Mater Studiorum, Università di Bologna, Bologna, Italy
| | - Michele Iafisco
- Laboratory of Environmental and Biological Structural Chemistry (LEBSC), Dipartimento di Chimica ‘G. Ciamician’, Alma Mater Studiorum, Università di Bologna, Bologna, Italy
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Conformational modifications of serum albumins adsorbed on different kinds of biomimetic hydroxyapatite nanocrystals. Colloids Surf B Biointerfaces 2010; 81:274-84. [DOI: 10.1016/j.colsurfb.2010.07.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 06/23/2010] [Accepted: 07/07/2010] [Indexed: 11/21/2022]
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Abstract
The prevention of tooth decay and the treatment of lesions and cavities are ongoing challenges in dentistry. In recent years, biomimetic approaches have been used to develop nanomaterials for inclusion in a variety of oral health-care products. Examples include liquids and pastes that contain nano-apatites for biofilm management at the tooth surface, and products that contain nanomaterials for the remineralization of early submicrometre-sized enamel lesions. However, the treatment of larger visible cavities with nanomaterials is still at the research stage. Here, we review progress in the development of nanomaterials for different applications in preventive dentistry and research, including clinical trials.
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Affiliation(s)
- Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, D-66421 Homburg/Saar, Germany.
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Hannig C, Hannig M. Natural enamel wear – A physiological source of hydroxylapatite nanoparticles for biofilm management and tooth repair? Med Hypotheses 2010; 74:670-2. [DOI: 10.1016/j.mehy.2009.11.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2009] [Accepted: 11/07/2009] [Indexed: 10/20/2022]
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Tampieri A, Sprio S, Ruffini A, Celotti G, Lesci IG, Roveri N. From wood to bone: multi-step process to convert wood hierarchical structures into biomimetic hydroxyapatite scaffolds for bone tissue engineering. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b900333a] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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