Cell rolling separation
First Claim
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1. A method comprising steps of:
- providing a surface that is at least partially coated with an ordered layer of cell adhesion moleculeswherein the surface comprises at least one edge between an area coated with the ordered layer and another area that is not coated with the ordered layer; and
wherein the area that is coated with the ordered layer of cell adhesion molecules is entirely covered with the ordered layer of cell adhesion molecules; and
flowing a cell stream that contains a population of cells across the surface in a direction which forms a non-zero angle α
s with the at least one edge, wherein at least one cell in the population of cells comprises a surface moiety that is recognized by the cell adhesion molecules and wherein the at least one cell rolls for a period of time in a direction that is α
s to the direction of flow as a result of rolling along at least a portion of the at least one edge.
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Abstract
The present invention provides systems for cell separation based on cell rolling on surfaces along edges of regions coated with cell adhesion molecules. A variety of designs of coated regions and edges are disclosed.
72 Citations
68 Claims
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1. A method comprising steps of:
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providing a surface that is at least partially coated with an ordered layer of cell adhesion molecules wherein the surface comprises at least one edge between an area coated with the ordered layer and another area that is not coated with the ordered layer; and wherein the area that is coated with the ordered layer of cell adhesion molecules is entirely covered with the ordered layer of cell adhesion molecules; and flowing a cell stream that contains a population of cells across the surface in a direction which forms a non-zero angle α
s with the at least one edge, wherein at least one cell in the population of cells comprises a surface moiety that is recognized by the cell adhesion molecules and wherein the at least one cell rolls for a period of time in a direction that is α
s to the direction of flow as a result of rolling along at least a portion of the at least one edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A method comprising steps of:
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providing a three dimensional surface that is at least partially coated with an ordered layer of cell adhesion molecules, and flowing a cell stream that contains a population of cells, simultaneously with a buffer stream that does not contain cells, across the surface in such conditions to create a stagnation line of no flow, wherein the direction of flow forms a non-zero angle α
s with the stagnation line, wherein at least one cell in the population of cells comprises a surface moiety that is recognized by the cell adhesion molecules and wherein at least one cell in the population of cells rolls at least part of the time along the stagnation line in a direction that is α
s to the direction of flow.
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48. A method comprising steps of:
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providing a surface that is at least partially coated with an ordered layer of cell adhesion molecules, wherein the surface comprises at least one edge between an area coated with the ordered layer and another area that is not coated with the ordered layer; and flowing a first cell stream that contains a population of cells, simultaneously with a buffer stream that does not contain cells, across the surface in a direction which forms a non-zero angle α
s with the at least one edge, wherein at least one cell in the population of cells comprises a surface moiety that is recognized by the cell adhesion molecules and wherein the at least one cell rolls for a period of time in a direction that is α
s to the direction of flow as a result of rolling along at least a portion of the at least one edge. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68)
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Specification