IP Library Granted Patent US 9,783,778
Granted Patent B2
US 9,783,778 · App. 14/383,288 · Granted Oct 10, 2017

Devices and methods for selecting apoptosis-signaling resistant cells, and uses thereof

Inventors: Shai Yarkoni (Kfar Saba, IL); Nadir Askenasy (Tel Aviv, IL)
Assignee: Cellect Biotherapeutics Ltd.
C12N5/0081A61K35/12A61K35/28A61K35/30A61K35/51B01D15/00C12N2501/25C12N2501/599
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Quick Facts
Patent No.
US 9,783,778
App. No.
14/383,288
Granted
Oct 10, 2017
Kind
B2
Abstract

The description discloses a device and a kit adapted for selection of cells that are resistant to receptor-mediated apoptosis and a method for using the device and kit. The device enables negative selection of mature immune cells which induce graft versus host disease (GvHD) out of a heterogeneous cell population which is introduced into the device. The device enables an efficient cell selection in simplified and cheaper setting by an off the shelf product—a solution that currently do not exist. The description further discloses uses for the device.

Claims (32)

1. A device, comprising: a container comprised of a biocompatible material and a biologically active apoptosis-inducing ligand immobilized to a surface, wherein said device is adapted for cell selection by apoptosis of apoptosis-sensitive cells and said apoptosis-inducing ligand is a single agent selected from the group consisting of tumor necrosis factor α (TNF-α), Fas ligand (FasL), Trail or Tweak.

2. The device of claim 1 , wherein said surface is the inner surface of said container.

3. The device of claim 1 , wherein said container is selected from the group consisting of a bag, a column, a tube, a bottle, a vial, and a flask.

4. The device of claim 1 , wherein said biocompatible material is selected from the group consisting of polypropylene, polystyrene, silicone, polyvinyl chloride, and a combination thereof.

5. The device of claim 1 , wherein said immobilized apoptosis-inducing ligand is Fas ligand (FasL).

6. The device of claim 1 , wherein said surface is the surface of beads present within said container.

7. A cell selection kit, comprising: (a) a device of claim 1 ; and (b) a solution for maintaining the integrity and activity of said apoptosis-inducing ligand within said device.

8. The kit of claim 7 , further comprising a second apoptosis-inducing ligand.

9. A method for selecting an apoptosis-signaling resistant cell from a cell population, said cell population comprises an apoptosis-signaling resistant cell and an apoptosis-signaling sensitive cell, said method comprising the steps of:

(a) introducing a sample comprising a cell population into the device of claim 1 ; and

(b) incubating said cells within said device;

thereby selecting for apoptosis-signaling resistant cells through enrichment of such apoptosis-signaling resistant cells in the cell population by inducing cell death in apoptosis-signaling sensitive cells to eliminate such apoptosis-signaling sensitive cells from the cell population.

10. The method of claim 9 , wherein said apoptosis-signaling resistant cell comprises: a stem cell, an immune cell insensitive to activation-induced cell death (AICD), a progenitor cell, or any combination thereof.

11. The method of claim 10 , wherein said stem cell is a bone marrow stem cell.

12. The method of claim 10 , wherein said immune cell insensitive to activation-induced cell death is a T cell.

13. The method of claim 9 , wherein said cell population is derived from: bone marrow, a progenitor cell, mobilized peripheral blood, or umbilical cord blood (UCB).

14. A method for improving the clinical outcome of hematopoietic stem and progenitor cells (HSPC) transplantation, comprising the steps of:

(a) providing a sample comprising a cell population, said cell population comprises stem and progenitor cell;

(b) contacting said cell population with a biologically active apoptosis-inducing ligand, Fas ligand (FasL) for a period of 1 to 24 hours or tumor necrosis factor α (TNF-α) for a period of 24 to 48 hours, in the device of claim 1 ;

(c) retrieving the cells of step (b); and

(d) transplanting the cells of step (c);

thereby improving the clinical outcome of hematopoietic stem and progenitor cells (HSPC) transplantation.

15. A method for eliminating a malignant cell in a composition comprising a progenitor-cell transplant, comprising the steps of:

(a) providing a composition comprising a progenitor-cell transplant; and

(b) contacting said composition with an apoptosis-inducing ligand for a period of about 24 hours in the device of claim 1 ;

thereby, eliminating a malignant cell in a composition comprising a progenitor-cell transplant.

16. A method for preventing graft vs. host disease (GvHD) while retaining graft vs. tumor (GvT) activity, comprising the steps of:

(a) providing a sample comprising a cell population, said cell population comprises HSPC and immune cells;

(b) contacting said cell population with an apoptosis-inducing ligand for 2-16 hours in the device of claim 1 ;

(c) retrieving the cells of step (b); and

(d) transplanting the cells of step (c),

thereby preventing graft vs. host disease (GvHD) while retaining graft vs. tumor (GvT) activity.

Assignments (2)
CHANGE OF NAME Recorded Aug 29, 2017
From: CELLECT BIOTECHNOLOGY LTD
To: CELLECT BIOTHERAPEUTICS LTD
Reel/Frame 043433/0369 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 7, 2017
From: YARKONI, SHAI; ASKENASY, NADIR
To: CELLECT BIOTECHNOLOGY LTD.
Reel/Frame 043215/0983 →
Continuity (2)
Provisional Application 61607033 · Mar 6, 2012
Related Publication 20150044182A1 · Feb 12, 2015