Systems and methods for screening pharmaceutical chemicals
First Claim
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1. A method of measuring a tissue response comprising:
- a) forming and suspending a bio-artificial tissue on a scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion;
b) contacting a bio-artificial tissue with a test agent;
c) applying a mechanical force to the contacted bio-artificial tissue of step (b); and
d) measuring a mechanical response of the contacted bio-artificial tissue on the scaffold to the test agent, the mechanical response being at least one of tissue stiffness and contractile force of the bio-artificial issue.
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Abstract
A method for obtaining a response of a tissue model system to an activator includes contacting a bio-artificial tissue model system with an activator and measuring cellular mechanical response thereto of at least one of contractile force and tissue stiffness. A method for obtaining a response of a tissue model system to an activator includes contacting a bio-artificial tissue model system with an activator and measuring cellular mechanical response thereto of at least one of contractile force and hysteresis.
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Citations
79 Claims
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1. A method of measuring a tissue response comprising:
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a) forming and suspending a bio-artificial tissue on a scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; b) contacting a bio-artificial tissue with a test agent; c) applying a mechanical force to the contacted bio-artificial tissue of step (b); and d) measuring a mechanical response of the contacted bio-artificial tissue on the scaffold to the test agent, the mechanical response being at least one of tissue stiffness and contractile force of the bio-artificial issue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for screening the effects of pharmaceutical agents comprising:
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a) forming and suspending a bio-artificial tissue on a scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; b) contacting the bio-artificial tissue with a pharmaceutical agent; c) applying a mechanical force to the contacted bio-artificial tissue of step (b); d) measuring a parameter of tissue stiffness or contractile force of the bio-artificial tissue on the scaffold; e) repeating steps (a) through (d) with at least another pharmaceutical agent; and f) identifying pharmaceutical agents that alter the tissue stiffness or contractile force of the bio-artificial tissue as compared to the tissue stiffness or contractile force of a bio-artificial tissue that is not contacted with the pharmaceutical agent. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A tissue response system, comprising:
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a) a plurality of bio-artificial tissues suspended from and overlaying a plurality of scaffolds without a fastener to facilitate tissue adhesion to the scaffold;
each of the plurality of scaffolds positioned within a well in a multi-well plate to provide an array of locations in which responses of the bio-artificial tissue on the scaffold to a test agent can be measured; andb) a tissue indentation system for applying a mechanical force and measuring a mechanical response of the bio-artificial tissue, the system comprising a probe coupled to a force transducer and a computer, the probe capable of contacting the bio-artificial tissue and measuring a response of the bio-artificial tissue to the test agent, the response being at least one of contractile force and tissue stiffness.
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40. A tissue response system, comprising:
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a) a bio-artificial tissue formed on and overlaying a scaffold, the bio-artificial tissue suspended without a fastener to facilitate tissue adhesion to the scaffold; b) a well for holding the scaffold, wherein the suspended bio-artificial tissue can be contacted with a test agent; and c) a tissue indentation system for applying a mechanical force and measuring a mechanical response of the bio-artificial tissue, the system comprising an indentation probe coupled to a force transducer and a computer, the probe capable of contacting the bio-artificial tissue on the scaffold and measuring a response of the bio-artificial tissue to the test agent, the response being at least one of contractile force and tissue stiffness. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A method of measuring a tissue response comprising:
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a) forming and suspending a bio-artificial tissue on a scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; b) contacting the bio-artificial tissue with an agent known to alter a mechanical response of a tissue; c) contacting the bio-artificial tissue of step (b) with a test agent; d) applying a mechanical force to the contacted bio-artificial tissue of step (c); e) measuring a mechanical response of the contacted bio-artificial tissue on the scaffold, the mechanical response being at least one of contractile force and tissue stiffness of the bio-artificial tissue; and f) comparing the mechanical response of the bio-artificial tissue contacted with both the agent known to alter a mechanical response of a tissue and the test agent to the mechanical response of at least one of (1) the bio-artificial tissue prior to contact with any agent;
(2) a bio-artificial tissue only contacted with an agent known to alter the mechanical response of a tissue;
or (3) a bio-artificial tissue only contacted with the test agent. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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72. A method of measuring a tissue response comprising:
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a) positioning a scaffold within a well in a multi-well plate; b) forming and suspending a bio-artificial tissue on the scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; c) contacting the bio-artificial tissue with a test agent; d) applying a mechanical force to the contacted bio-artificial tissue of step (c); and e) measuring a mechanical response of the contacted bio-artificial tissue on the scaffold to the test agent, the mechanical response being at least one of tissue stiffness and contractile force and comparing the mechanical response to a mechanical response of a bio-artificial tissue that is not contacted with the test agent.
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73. A method of measuring a tissue response comprising:
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a) forming and suspending a bio-artificial tissue on a scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; b) contacting the bio-artificial tissue with a test agent; c) applying a mechanical force to the contacted bio-artificial tissue of step (b) using a tissue indentation system; and d) measuring a mechanical response of the contacted bio-artificial tissue on the scaffold to the test agent using the tissue indentation system, the mechanical response being at least one of tissue stiffness and contractile force and comparing the mechanical response to a mechanical response of a bio-artificial tissue that is not contacted with the test agent. - View Dependent Claims (74)
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75. A method for screening the effects of pharmaceutical agents comprising:
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a) forming and suspending a bio-artificial tissue on a scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; b) contacting the bio-artificial tissue with a pharmaceutical agent; c) applying a mechanical force to the contacted bio-artificial tissue of step (b) using a tissue indentation system; d) measuring a parameter of tissue stiffness or contractile force of the bio-artificial tissue on the scaffold to the pharmaceutical agent using the tissue indentation system; e) repeating steps (a) through (d) with at least another pharmaceutical agent; and f) identifying pharmaceutical agents that alter the tissue stiffness or contractile force of the contacted bio-artificial tissue as compared to the tissue stiffness or contractile force of a bio-artificial tissue that is not contacted with the pharmaceutical agent. - View Dependent Claims (76)
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77. A method of measuring a tissue response comprising:
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a) positioning a scaffold within a well in a multi-well plate; b) forming and suspending a bio-artificial tissue on the scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; c) contacting the bio-artificial tissue with an agent known to alter a mechanical response of a tissue; d) applying a mechanical force to the contacted bio-artificial tissue of step (c); e) measuring a mechanical response of the contacted bio-artificial tissue on the scaffold, the mechanical response being at least one of contractile force and tissue stiffness of the bio-artificial tissue; f) contacting the bio-artificial tissue of step (e) with a test agent; g) applying a mechanical force to the contacted bio-artificial tissue of step (f); h) measuring a mechanical response of the contacted bio-artificial tissue of step (f) on the scaffold, the mechanical response being at least one of contractile force and tissue stiffness of the bio-artificial tissue; and i) comparing the response of the bio-artificial tissue contacted with the agent known to alter a mechanical response from step (e) to the response of the bio-artificial tissue further contacted with the test agent from step (h).
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78. A method of measuring a tissue response comprising:
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a) forming and suspending a bio-artificial tissue on a scaffold to yield a bio-artificial tissue overlaying the scaffold without a fastener to facilitate tissue adhesion; b) contacting the bio-artificial tissue with an agent known to alter a mechanical response; c) contacting the bio-artificial tissue with a test agent; d) applying a mechanical force to the contacted bio-artificial tissue of step (c); e) measuring tissue stiffness of the bio-artificial tissue of step (d) using a tissue indentation system, wherein said bio-artificial tissue remains suspended without a fastener to facilitate tissue adhesion from said scaffold; and f) comparing the tissue stiffness of a bio-artificial tissue contacted with the agent known to alter a mechanical response to the tissue stiffness of the bio-artificial tissue contacted with both the agent known to alter a mechanical response and the test agent. - View Dependent Claims (79)
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Specification