DETERMINISTIC LATERAL DISPLACEMENT IN THE PREPARATION OF CELLS AND COMPOSITIONS FOR THERAPEUTIC USES
The present invention is directed to the use of Deterministic Lateral Displacement in the preparation of cells and compositions for therapeutic uses.
1 - 155 . (canceled)
156 . A method of engineering a population of target cells, comprising:
a) isolating the target cells from a crude fluid composition wherein the isolation procedure comprises performing Deterministic Lateral Displacement (DLD) on a microfluidic device, wherein said device comprises:
i) at least one channel extending from a sample inlet to one or more fluid outlets, wherein the channel is bounded by a first wall and a second wall opposite from the first wall;
ii) an array of obstacles arranged in rows in the channel, each subsequent row of obstacles being shifted laterally with respect to a previous row, and wherein said obstacles are disposed in a manner such that, when said crude fluid composition is applied to an inlet of the device and fluidically passed through the channel, target cells flow to one or more collection outlets where an enriched product is collected and contaminant cells or particles that are of a different size than the target cells flow to one more waste outlets that are separate from the collection outlets;
b) genetically engineering the target cells obtained from the collection outlet(s) to have a desired phenotype.
157 . The method of claim 156 , wherein the crude fluid composition is blood or a composition that has been obtained by performing apheresis or leukapheresis on blood.
158 . The method of claim 157 , wherein the yield of target cells exhibiting the desired phenotype is at least 10% greater than identical cells isolated by Ficoll centrifugation and that have not subjected to DLD.
159 . The method of claim 157 , wherein the yield of target cells exhibiting the desired phenotype is at least 30% greater than identical cells isolated by Ficoll centrifugation and that have not subjected to DLD
160 . The method of claim 159 , wherein no more than five hours elapse from the time that apheresis or leukapheresis is completed until the first time that target cells are transfected or transduced.
161 . The method of claim 160 , wherein target cells are bound to one or more carriers in a way that promotes or complements DLD separation before performing DLD.
162 . The method of claim 160 , wherein target cells are bound to one or more carriers in a way that promotes or complements DLD separation after performing DLD and either before or after genetically engineering the cells.
163 . A method of separating an adherent cell from a plurality of other cells comprising:
a) contacting a crude fluid composition comprising the plurality of other cells and the adherent cell with one or more carriers that bind in a way that promotes DLD separation, wherein the adherent cell is at least partially associated with carriers upon or after contact to generate a carrier associated adherent cell complex, wherein the carrier associated adherent cell complex comprises an increased size relative to cells in the plurality of other cells, and wherein the size of the carrier associated adherent cell complex is greater than or equal to a critical size, and cells in the plurality of other cells comprise a size less than the critical size;
b) applying the crude fluid composition to a device, wherein the device comprises an array of obstacles arranged in rows, wherein the rows are shifted laterally with respect to one another, wherein the rows are configured to deflect a particle greater than or equal to the critical size in a first direction and a particle less than the critical size in a second direction; and
c) flowing the sample comprising the carrier associated adherent cell complex through the device, wherein the carrier associated adherent cell complex is deflected by the obstacles in the first direction, and the cells in the plurality of other cells are deflected in the second direction, thereby separating the carrier associated adherent cell complex from the other cells of the plurality;
d) collecting a fluid composition comprising the separated carrier associated adherent cell complex.
164 . The method of claim 163 , wherein said adherent cell is collected from a patient as part of a crude fluid composition comprising said adherent cell and a plurality of other cells, and wherein no more than three hours elapse from the time that the obtaining of the crude fluid composition from the patient is completed until the adherent cell is bound to a carrier for the first time.
165 . The method of claim 163 , wherein no more than one hour elapses from the time that the obtaining of the crude fluid composition from the patient is completed until the adherent cell is bound to the carrier for the first time.
166 . The method of claim 163 , wherein said carrier comprises on its surface an antibody or activator that binds specifically to said adherent cell.
167 . The method of claim 163 , wherein the diameters of all of said carriers are at least twice as large as that of the adherent cell.
168 . The method of claim 163 , wherein the adherent cell is a stem cell.
169 . A method of separating an activated cell from a plurality of other cells comprising:
a) contacting a crude fluid composition comprising a cell capable of activation and the plurality of other cells with one or more carriers, wherein at least one carrier comprises a cell activator, wherein the cell activator is at least partially associated with the cell capable of activation by the cell activator upon or after contact to generate a carrier associated cell complex, wherein the association of the cell activator with the cell capable of activation by the cell activator at least partially activates the cell capable of activation, wherein the carrier associated cell complex comprises an increased size relative to cells in the plurality of other cells, and wherein a size of the carrier associated cell complex is greater than or equal to a critical size, and the cells in the plurality of other cells comprise a size less than the critical size;
b) applying the sample to a device, wherein the device comprises an array of obstacles arranged in rows; wherein the rows are shifted laterally with respect to one another, wherein the rows are configured to deflect a particle greater than or equal to the critical size in a first direction and a particle less than the critical size in a second direction; and
c) flowing the sample through the device, wherein the carrier associated cell complex is deflected by the obstacles in the first direction, and the cells in the plurality of other cells are deflected in the second direction, thereby separating the activated cell from the other cells of the plurality;
d) collecting a fluid composition comprising the separated carrier associated cell complex.
170 . The method of claim 169 , wherein the cell capable of activation is selected from the group consisting of: a T cell, a B cell, a regulatory T cell, a macrophage, a dendritic cell, a granulocyte, an innate lymphoid cell, a megakaryocyte, a natural killer cell, a thrombocyte, a synoviocyte, a beta cell, a liver cell, a pancreatic cell; a DE3 lysogenized cell, a yeast cell, a plant cell, and a stem cell.
171 . The method of claim 170 , wherein the cell activator is a protein or antibody.
172 . The method of claim 170 , wherein said cell capable of activation is collected from a patient as part of a crude fluid composition comprising said cell capable of activation and a plurality of other cells, and wherein no more than four hours elapse from the time that the obtaining of the crude fluid composition from the patient is completed until the cell capable of activation is bound to the carrier.
173 . The method of claim 169 , wherein the cell activator is a protein or antibody and no more than two hours elapse from the time that the obtaining of the crude fluid composition from the patient is completed until the cell capable of activation is bound to the carrier.
174 . The method of claim 169 , wherein the diameters of all of said carriers are at least twice as large as that of the cell capable of activation.
175 . The method of claim 169 , wherein the diameters of all of said carriers are at least ten times as large as that of the cell capable of activation.