Electroactive materials for stimulation of biological activity of stem cells
First Claim
1. A method for stimulating one or more biological activities within mesenchymal stem cells comprising:
- contacting tissue with an electroactive substrate, wherein said electroactive substrate has at least one surface of electroactive polymer, and wherein said electroactive polymer has attached thereto, or associated therewith, a matrix incorporating one or more mammalian mesenchymal stem cells; and
applying electromagnetic stimulation at the location of the electroactive substrate, wherein said electromagnetic stimulation is coupled to said electroactive polymer.
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Accused Products
Abstract
Compositions, methods and systems are provided for the stimulation of biological activities within stem cells by applying electromagnetic stimulation to an electroactive material, wherein the electromagnetic stimulation is coupled to the electromagnetic material. In general the present invention involves attaching or associating the desired cells to or with a surface comprising an electroactive material, and applying electromagnetic radiation directly to the desired area. In preferred embodiments, the stimulation of biological activities within cells results from inducing one or more activities including, but not limited to, gene expression, cell growth, cell differentiation, signal transduction, membrane permeability, cell division, contraction, and cell signaling. In exemplary embodiments, the electroactive materials used in the present invention are either two-dimensional substrates such as thin films having at least one surface of an electroactive material, or in alternative embodiments, the electroactive materials are three-dimensional substrates comprising a matrix having at least one surface of an electroactive material.
116 Citations
61 Claims
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1. A method for stimulating one or more biological activities within mesenchymal stem cells comprising:
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contacting tissue with an electroactive substrate, wherein said electroactive substrate has at least one surface of electroactive polymer, and wherein said electroactive polymer has attached thereto, or associated therewith, a matrix incorporating one or more mammalian mesenchymal stem cells; and
applying electromagnetic stimulation at the location of the electroactive substrate, wherein said electromagnetic stimulation is coupled to said electroactive polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A tissue engineering method, comprising:
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providing a composition of mesenchymal stem cells and an electroactive substrate, wherein said electroactive substrate has at least one surface of electroactive polymer, and wherein said mesenchymal stem cells are attached thereto or associated with said electroactive substrate;
applying electromagnetic stimulation to said composition, wherein said electromagnetic stimulation is coupled to said electroactive polymer; and
contacting said composition with a mammalian tissue, wherein the step of contacting may be performed before or after the step of applying. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A tissue engineering method, comprising:
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providing a composition of mesenchymal stem cells and an electroactive substrate, wherein said electroactive substrate has at least one surface of electroactive polymer, and wherein said mesenchymal stem cells are attached thereto or associated with said electroactive substrate;
applying electromagnetic stimulation to said composition, wherein said electromagnetic stimulation is coupled to said electroactive polymer;
removing said stimulated cells from said electroactive polymer; and
contacting the stimulated cells with a mammalian tissue. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A tissue engineering method, comprising:
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providing a composition of mesenchymal stem cells and an electroactive substrate, wherein said electroactive substrate has at least one surface of electroactive polymer, and wherein said mesenchymal stem cells are attached thereto or associated with said electroactive substrate;
contacting said composition with a mammalian tissue; and
applying electromagnetic stimulation to said composition, wherein said electromagnetic stimulation is coupled to said electroactive polymer. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A system for stimulating one or more biological activities of cells comprising:
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a composition comprising an electroactive substrate, wherein said electroactive substrate has at least one surface of electroactive polymer, and wherein said electroactive polymer has attached thereto, or associated therewith, one or more mesenchymal stem cells; and
an apparatus for applying electromagnetic energy at the desired location. - View Dependent Claims (58, 59)
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60. A two-dimensional stimulant of one or more biological activities comprising one or more films of an electroactive polymer, wherein said one or more films are associated with or attached to one or more mesenchymal stem cells.
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61. A three-dimensional stimulant of one or more biological activities comprising an electroactive polymer associated with or attached to a matrix, and wherein said three-dimensional stimulant is associated with or attached to one or more mesenchymal stem cells.
Specification