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Ben Messaoud G, Sánchez-González L, Probst L, Desobry S. Influence of internal composition on physicochemical properties of alginate aqueous-core capsules. J Colloid Interface Sci 2016; 469:120-128. [DOI: 10.1016/j.jcis.2016.02.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 02/04/2016] [Indexed: 01/06/2023]
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Kennedy S, Hu J, Kearney C, Skaat H, Gu L, Gentili M, Vandenburgh H, Mooney D. Sequential release of nanoparticle payloads from ultrasonically burstable capsules. Biomaterials 2015; 75:91-101. [PMID: 26496382 DOI: 10.1016/j.biomaterials.2015.10.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 10/01/2015] [Accepted: 10/05/2015] [Indexed: 12/22/2022]
Abstract
In many biomedical contexts ranging from chemotherapy to tissue engineering, it is beneficial to sequentially present bioactive payloads. Explicit control over the timing and dose of these presentations is highly desirable. Here, we present a capsule-based delivery system capable of rapidly releasing multiple payloads in response to ultrasonic signals. In vitro, these alginate capsules exhibited excellent payload retention for up to 1 week when unstimulated and delivered their entire payloads when ultrasonically stimulated for 10-100 s. Shorter exposures (10 s) were required to trigger delivery from capsules embedded in hydrogels placed in a tissue model and did not result in tissue heating or death of encapsulated cells. Different types of capsules were tuned to rupture in response to different ultrasonic stimuli, thus permitting the sequential, on-demand delivery of nanoparticle payloads. As a proof of concept, gold nanoparticles were decorated with bone morphogenetic protein-2 to demonstrate the potential bioactivity of nanoparticle payloads. These nanoparticles were not cytotoxic and induced an osteogenic response in mouse mesenchymal stem cells. This system may enable researchers and physicians to remotely regulate the timing, dose, and sequence of drug delivery on-demand, with a wide range of clinical applications ranging from tissue engineering to cancer treatment.
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Affiliation(s)
- Stephen Kennedy
- Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Department of Electrical, Computer, and Biomedical Engineering, University of Rhode Island, Kingston, RI 02881, USA; Department of Chemical Engineering, University of Rhode Island, Kingston, RI 02881, USA
| | - Jennifer Hu
- Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Cathal Kearney
- Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Department of Anatomy, Tissue Engineering Research Group and Advanced Materials and Bioengineering Research Center, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Hadas Skaat
- Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Luo Gu
- Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Marco Gentili
- Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Herman Vandenburgh
- Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI 02912, USA; Department of Pathology and Laboratory Medicine, Brown University, Providence, RI 02912, USA
| | - David Mooney
- Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
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de Oliveira EF, Paula HC, Paula RCD. Alginate/cashew gum nanoparticles for essential oil encapsulation. Colloids Surf B Biointerfaces 2014; 113:146-51. [DOI: 10.1016/j.colsurfb.2013.08.038] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Revised: 08/19/2013] [Accepted: 08/22/2013] [Indexed: 01/30/2023]
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