Device and method for analysis of blood components and identifying inhibitors and promoters of the inflammatory response
First Claim
1. An apparatus comprising (a) a solid phase having at least one surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on the solid phase surface;
- (b) a housing enclosing the solid phase, said housing having an inlet end and an outlet end for respectively receiving and removing a sample containing or suspected of containing leukocytes;
(c) a means associated with the inlet for introducing said sample into the housing; and
(d) a means associated with the outlet for withdrawing said sample from the housing, said apparatus being capable of permitting detection of leukocyte rolling on the solid phase surface.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides in vitro models of the in vivo rolling and arrest of leukocytes along the endothelial cell wall, which are important steps in the migration of leukocytes out of the blood stream and into tissue, as part of the inflammatory response. The in vitro models of the invention are functional under physiologic flow conditions resulting in physiologic shear stresses. In a specific embodiment, for modelling leukocyte rolling, the apparatus of the invention comprises a solid phase surface with rolling mediator molecules present thereon. Such rolling mediators are, for example, selectins and selectin ligands which have binding partners expressed on leukocytes. In another specific embodiment, for modelling leukocyte rolling followed by adhesion/arrest, the apparatus of the invention comprises a solid phase surface with both rolling mediators and integrin binding partners present thereon. The apparatuses of the invention can be used for collecting, concentrating, purifying, and analyzing blood and blood components, in particular, leukocytes and subsets thereof. The invention further relates to methods for identifying inhibitors or, alternatively, promoters (agonists, functional components) of the inflammatory response. Therapeutic and diagnostic methods, pharmaceutical compositions and kits are also provided.
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Citations
101 Claims
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1. An apparatus comprising (a) a solid phase having at least one surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on the solid phase surface;
- (b) a housing enclosing the solid phase, said housing having an inlet end and an outlet end for respectively receiving and removing a sample containing or suspected of containing leukocytes;
(c) a means associated with the inlet for introducing said sample into the housing; and
(d) a means associated with the outlet for withdrawing said sample from the housing, said apparatus being capable of permitting detection of leukocyte rolling on the solid phase surface. - View Dependent Claims (40, 41)
- (b) a housing enclosing the solid phase, said housing having an inlet end and an outlet end for respectively receiving and removing a sample containing or suspected of containing leukocytes;
- 2. A solid phase having at least one surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on the solid phase surface, wherein the solid phase has a plurality of zones on said surface, each zone containing a different said molecule.
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4. An apparatus comprising (a) a solid phase having at least one surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on the solid phase surface and (b) a housing enclosing the solid phase, said housing having an inlet end and an outlet end for respectively receiving and removing a sample containing or suspected of containing leukocytes wherein the solid phase is a microscope slide.
- 5. A solid phase having at least one surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on the solid phase surface, wherein the solid phase is a planar phase comprising glass, and a lipid bilayer is present on said surface, said lipid bilayer containing said molecules.
- 8. A solid phase having at least one surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on the solid phase surface, wherein said surface also contains a plurality of one or more substantially purified integrin binding partners immobilized on said surface.
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11. A solid phase having at least one surface containing (a) a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on the solid phase surface;
- and (b) a plurality of one or more substantially purified integrin binding partners;
said solid phase further comprising a plurality of leukocytes adhering to said surface of the solid phase.
- and (b) a plurality of one or more substantially purified integrin binding partners;
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13. An apparatus comprising:
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(a) a solid phase having (i) a plurality of one or more substantially purified molecules contained on a surface of the solid phase, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, and (ii) a plurality of one or more substantially purified integrin binding partners contained on said surface; (b) inlet means for receiving a fluid sample and for permitting the sample to enter onto the surface of the solid phase; and (c) outlet means for permitting the fluid sample after it has flowed across at least a portion of the surface of the solid phase to exit said surface. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An apparatus comprising:
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(a) a solid phase having a plurality of one or more substantially purified molecules contained on a surface of the solid phase, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface; (b) inlet means for receiving a fluid sample and for permitting the sample to enter onto the surface of the solid phase; and (c) outlet means for permitting the fluid sample after it has flowed across at least a portion of the surface of the solid phase to exit said surface; (d) a means associated with the inlet means, for introducing the fluid sample into the inlet means; (e) a means associated with the outlet means, for removing the fluid sample from the outlet means; said apparatus being capable of permitting detection of leukocyte rolling on the solid phase surface. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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42. An apparatus comprising:
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(a) a planar solid phase having a plurality of one or more substantially purified molecules contained on a surface of the solid phase, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface; (b) a base having (i) an inlet manifold, (ii) an outlet manifold, and (iii) a recessed lip on its lower surface; (c) a deck positioned below the base, having (i) an entrance slot communicating with the inlet manifold, and (ii) an exit slot communicating with the outlet manifold; (d) a longitudinal compressible gasket positioned within the recessed lip of the base, its top surface contacting the base, and having an aperture of a size and shape substantially congruent with the deck; in which the planar solid phase is positioned on the bottom surface of the gasket, such that the solid phase surface with said molecules is communicating with the aperture of the gasket. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. An apparatus comprising:
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(a) a solid phase having a plurality of one or more substantially purified molecules contained on a surface of the solid phase, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface; (b) inlet means for receiving a fluid sample and for permitting the sample to enter onto the surface of the solid phase; (c) outlet means for permitting the fluid sample after it has flowed across at least a portion of the surface of the solid phase to exit said surface, (d) a housing containing said solid phase, inlet means, and outlet means; and (e) a video camera or microscope operatively linked for viewing the surface of the solid phase.
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55. An apparatus comprising:
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(a) a planar solid phase comprising glass; (b) a planar lipid bilayer present on a surface of the solid phase, said lipid bilayer containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte; (c) inlet means for receiving a fluid sample and for permitting the sample to enter onto the lipid bilayer; and (d) outlet means for permitting the fluid sample after it has flowed across at least a portion of the lipid bilayer to exit said surface.
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56. A method of collecting or purifying leukocytes from a fluid sample comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing leukocytes, said surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which the contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes in the sample which express a binding partner to said molecules to roll on the surface of the solid phase; and (b) recovering the leukocytes that roll on the surface. - View Dependent Claims (57, 58, 61)
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59. A method of collecting or purifying leukocytes from a fluid sample comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing leukocytes, said surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which the contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample such that bulk flow is induced and shear stresses at the surface of the solid phase are in the range of from about 0.5 to about 4.0 dynes per square centimeter, thereby allowing a plurality of leukocytes in the sample which express a binding partner to said molecules to roll on the surface of the solid phase; and (b) recovering the leukocytes that roll on the surface. - View Dependent Claims (60)
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62. A method for collecting or purifying leukocytes comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing a chemoattractant and containing leukocytes, said surface containing a plurality of one or more substantially purified molecules and a plurality of one or more substantially purified integrin binding partners, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes which express (i) a binding partner to said molecules, (ii) a receptor for the chemoattractant, and (iii) an integrin recognizing the integrin binding partners, to become arrested on the surface of the solid phase; and (b) recovering the arrested leukocytes from the solid phase. - View Dependent Claims (63, 64, 65)
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66. A method for analysis of a fluid sample containing leukocytes, comprising
(a) contacting a surface of a solid phase with a fluid sample containing leukocytes, said surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes which express a binding partner to said molecules to roll along the surface of the solid phase; - and
(b) detecting or quantifying the leukocytes that roll along the surface. - View Dependent Claims (67, 70)
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68. A method for analysis of a fluid sample containing leukocytes, comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing leukocytes, said solid phase containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample such that bulk flow is induced and shear stresses at the surface of the solid phase are in the range of from about 0.5 to about 4.0 dynes per square centimeter, thereby allowing a plurality of leukocytes which express a binding partner to said molecules to roll along the surface of the solid phase; and (b) detecting or quantifying the leukocytes that roll along the surface. - View Dependent Claims (69)
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71. A method for analysis of a fluid sample containing leukocytes, comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing a chemoattractant and containing leukocytes, said surface containing a plurality of one or more substantially purified molecules and a plurality of one or more substantially purified integrin binding partners, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes which express (i) a binding partner to said molecules, (ii) a receptor for the chemoattractant, and (iii) an integrin recognizing the integrin binding partners, to become arrested on the surface of the solid phase; and (b) detecting or quantifying the leukocytes arrested on the solid phase. - View Dependent Claims (72, 73)
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74. A method for diagnosing a disease or disorder in a subject, comprising
(a) contacting a surface of a solid phase with a fluid sample derived from a subject and containing leukocytes, said surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes which express a binding partner to said molecules to roll along the surface of the solid phase; - and
(b) measuring the number or percentage of the leukocytes or a subset thereof that roll on the surface of the solid phase;
in which an increase or decrease in said number or percentage relative to the number or percentage of leukocytes or the subset thereof that roll on the surface from an equivalent fluid sample from a healthy individual, indicates the presence of the disease or disorder in the subject. - View Dependent Claims (75, 76, 77, 78, 79)
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80. A method for diagnosing a disease or disorder in a subject comprising
(a) contacting a surface of a solid phase with a fluid sample containing a chemoattractant and containing leukocytes, and said leukocytes obtained from a subject, said surface containing a plurality of one or more substantially purified molecules and a plurality of one or more substantially purified integrin binding partners, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes which express (i) a binding partner to said molecules, (ii) a receptor for the chemoattractant, and (iii) an integrin recognizing the integrin binding partners, to become arrested on the surface of the solid phase; - and
(b) measuring the number or percentage of the leukocytes or a subset thereof that are arrested on the surface of the solid phase;
in which an increase or decrease in said number or percentage, relative to the number or percentage of leukocytes or the subset thereof that are arrested on the surface from an equivalent fluid sample containing leukocytes from a healthy individual, indicates the presence of the disease or disorder in the subject. - View Dependent Claims (81, 82)
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83. A method for identifying a candidate compound capable of inhibiting a component of the inflammatory response, comprising
(a) contacting a surface of a solid phase with a fluid sample containing leukocytes and containing a test compound, said surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes which express a binding partner to said molecules to roll on the surface of the solid phase; - and
(b) determining the number or percentage of leukocytes or a subset thereof rolling on the surface of the solid phase, in which a decrease in said number or percentage relative to the number or percentage of leukocytes or the subset thereof which roll in the absence of the test compound indicates that the test compound is capable of inhibiting the inflammatory response. - View Dependent Claims (84, 85, 86, 87)
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88. A method for identifying a candidate compound capable of inhibiting a component of the inflammatory response, comprising
(a) contacting a surface of a solid phase with a fluid sample containing (i) leukocytes, (ii) a chemoattractant, and (iii) a test compound; - said surface containing a plurality of one or more substantially purified molecules and a plurality of one or more substantially purified integrin binding partners, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface;
in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes in the sample which express (i) a binding partner to said molecules, (ii) a receptor for the chemoattractant, and (iii) an integrin recognizing the integrin binding partners, to become arrested on the surface of the solid phase; and(b) determining the number or percentage of arrested leukocytes, or a subset thereof, in which a decrease in such number or percentage relative to the number or percentage of leukocytes or the subset thereof which are arrested in the absence of the test compound indicates that the test compound is capable of inhibiting the inflammatory response. - View Dependent Claims (89, 90, 91)
- said surface containing a plurality of one or more substantially purified molecules and a plurality of one or more substantially purified integrin binding partners, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface;
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92. A method for identifying a candidate compound capable of promoting a component of the inflammatory response, comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing leukocytes and containing a test compound, said surface containing a plurality of one or more substantially purified molecules, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes which express a binding partner to said molecules to roll on the surface of the solid phase; and (b) determining the number or percentage of leukocytes or a subset thereof rolling on the surface of the solid phase, in which an increase in said number or percentage relative to the number or percentage of leukocytes or the subset thereof which roll in the absence of the test compound indicates that the test compound is capable of promoting the inflammatory response. - View Dependent Claims (94)
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93. A method for identifying a candidate compound capable of promoting a component of the inflammatory response, comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing (i) leukocytes, (ii) a chemoattractant, and (iii) a test compound;
said surface containing a plurality of one or more substantially purified molecules and a plurality of one or more substantially purified integrin binding partners;
said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample, thereby allowing a plurality of leukocytes in the sample which express (i) a binding partner to said molecules, (ii) a receptor for the chemoattractant; and
(iii) an integrin recognizing the integrin binding partners, to become arrested on the surface of the solid phase; and(b) determining the number or percentage of arrested leukocytes or a subset thereof, in which a increase in such number or percentage relative to the number or percentage of leukocytes or the subset thereof which are arrested in the absence of the test compound indicates that the test compound is capable of promoting the inflammatory response.
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95. A method for identifying a molecule capable of mediating rolling of a leukocyte on a solid phase surface containing said molecule, comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing leukocytes, said surface containing a plurality of a substantially purified test molecule, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample; and (b) detecting any leukocytes that roll on the surface, in which rolling of leukocytes on the surface indicates that the test molecule is capable of mediating rolling of a leukocyte on a solid phase surface containing the test molecule. - View Dependent Claims (96, 101)
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97. A method for identifying a leukocyte chemoattractant, comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing leukocytes and containing a test compound, said surface containing a plurality of one or more substantially purified molecules and a plurality of one or more substantially purified integrin binding partners, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample; and (b) detecting any leukocytes that are arrested on the surface, in which arrest of leukocytes on the surface indicates that the test compound is a leukocyte chemoattractant. - View Dependent Claims (98)
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99. A method for identifying an integrin binding partner, comprising:
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(a) contacting a surface of a solid phase with a fluid sample containing a chemoattractant and containing leukocytes, said surface containing a plurality of one or more substantially purified molecules and a plurality of a substantially purified test compound, said molecules being capable of mediating rolling of a leukocyte on said solid phase surface, in which said contacting is under conditions that provide relative movement between the solid phase and the leukocytes in the sample; and (b) detecting any leukocytes that are arrested on the surface, in which arrest of leukocytes on the surface indicates that the test compound is an integrin binding partner. - View Dependent Claims (100)
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Specification