Multiplexed assays of cell migration
Systems, including methods, apparatus, compositions, and kits, for multiplexed assay of cell migration with subdivided cell holders and/or microplates.
1 . A method of performing a cell migration assay, comprising (1) placing a set of cells into an array of compartments, each compartment having a bottom wall defined by a porous matrix and side walls connected to the bottom wall to separate the compartments; (2) contacting the bottom wall of each compartment with fluid held by a corresponding array of sub-wells in a microplate well; and (3) sensing migratory cells of the set of cells, if any, disposed below the bottom wall of each compartment.
2 . The method of claim 1 , further comprising the step of disposing known or candidate cell-attractive materials in the corresponding array of sub-wells before the step of contacting.
3 . The method of claim 1 , further comprising overfilling the array of fluid compartments with a fluid to provide fluid communication adjacent a top region of the compartments, the fluid including a candidate compound being tested for an agonist or antagonist activity on migration of the migratory cells.
4 . The method of claim 1 , wherein contacting the bottom wall maintains fluid isolation between the sub-wells other than any fluid communication between the compartments.
5 . The method of claim 1 , wherein placing the cells including placing different types of cells in different compartments.
6 . The method of claim 1 , further comprising labeling the cells with a dye to enable the step of sensing.
7 - 17 . (canceled)
18 . A sample holder for performing cell migration assays, comprising an array of compartments separated by side walls each having a lower region, a subset of the side walls including openings defined in their lower regions, the openings being configured to permit migration of cells between adjacent compartments and to restrict passive movement of the cells between the adjacent compartments.
19 . The sample holder of claim 18 , the array defining a plane, wherein the openings are slits extending generally parallel to the plane.
20 . The sample holder of claim 18 , wherein the sample holder includes a set of wells, and wherein each well includes a plurality of sub-wells corresponding to the compartments.
21 . The sample holder of claim 18 , wherein the compartments are arranged as pairs disposed in fluid communication via the openings.
22 . The sample holder of claim 18 , wherein each compartment is defined by a floor and a plurality of the walls, and wherein the openings are defined adjacent the floor on a subset of the walls.
23 . The sample holder of claim 18 , wherein the compartments are wells of a microplate.
24 . A method of performing a cell migration assay, comprising: placing cells into an array of first compartments so that the cells can migrate into laterally disposed second compartments through openings in walls separating respective pairs of first and second compartments, the openings being configured to restrict passive movement of the cells into the second compartments; and sensing migration of the cells to the second compartment, if any.
25 . The method of claim 24 , wherein the step of sensing migration includes a step of measuring the presence, if any, of the cells in the second compartments.
26 . The method of claim 24 , wherein the step of placing cells includes a step of placing cells into alternate rows of sub-wells, and wherein the step of sensing includes sensing migration of the cells in other sub-wells disposed between the alternate rows.