IP Library Granted Patent US 12,275,802
Granted Patent B2
US 12,275,802 · App. 17/583,117 · Granted Apr 15, 2025

Compositions and methods for immunotherapy

Inventors: Victor D. Fedorov (New York, NY); Michel Sadelain (New York, NY)
Assignee: MEMORIAL SLOAN KETTERING CANCER CENTER
C07K16/40A61K39/4611A61K39/4621A61K39/4631A61K39/4636A61K39/46431A61K39/46434A61K39/464412A61K39/464495C07K14/7051C07K14/70514C07K14/70517C12N5/0636C12N5/0638A61K2239/22A61K2239/26A61K2239/31A61K2239/38C07K2317/622C07K2319/30
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Quick Facts
Patent No.
US 12,275,802
App. No.
17/583,117
Granted
Apr 15, 2025
Kind
B2
Abstract

The present invention provides immunoresponsive cells, including T cells, cytotoxic T cells, regulatory T cells, and Natural Killer (NK) cells, expressing an antigen recognizing receptor and an inhibitory chimeric antigen receptor (iCAR). Methods of using the immunoresponsive cell include those for the treatment of neoplasia and other pathologies where an increase in an antigen-specific immune response is desired.

Claims (21)

1. A method of treating a tumor in a subject, comprising administering to the subject a T cell, wherein the T cell comprises:

a) a chimeric antigen receptor (CAR) comprising an extracellular antigen-binding domain comprising a single chain variable fragment (scFv) that binds to a first antigen that is expressed at the surface of a cell of the tumor, and an intracellular signaling domain that is capable of activating the immunoresponsive cell and comprises a signaling domain of CD28, and

b) an inhibitory chimeric antigen receptor (iCAR) comprising an extracellular antigen-binding domain comprising a single chain variable fragment (scFv) that binds to a second antigen that is not expressed on the tumor cell surface, and a signaling domain of an immunoinhibitory receptor selected from the group consisting of CTLA-4, PD-1, LAG-3, 2B4, and BTLA;

wherein binding of the CAR to the first antigen induces cytotoxicity of the T cell, and binding of the iCAR to the second antigen reduces the cytotoxicity of the T cell induced by the CAR.

2. The method of claim 1 , wherein the CAR is recombinantly expressed and/or expressed from a vector.

3. The method of claim 1 , wherein the iCAR is recombinantly expressed and/or expressed from a vector.

4. The method of claim 1 , wherein the T cell is selected from the group consisting of effector T cells, and memory T cells.

5. The method of claim 4 , wherein the effector T cells are selected from the group consisting of helper T cells (CD4+ T cells), and cytotoxic T cells (CD8+ T cells).

6. The method of claim 1 , wherein the T cell is autologous or allogeneic.

7. The method of claim 1 , wherein the first antigen is selected from the group consisting of CD19, CD7, CD10, CD20, CD22, CD30, CD33, CD34, CD38, CD41, CD44, CD49f, CD56, CD74, CD123, CD133, CD138, CAIX, CEA, CD5, EGP-2, EGP-40, EpCAM, Erb-B2, Erb-B3, Erb-B4, FBP, Fetal acetylcholine receptor, folate receptor-α, GD2, GD3, HER-2, IL-13R-α2, κ-light chain, LeY, L1 cell adhesion molecule, Mesothelin, Muc-1, Muc-16, oncofetal antigen (h5T4), PSCA, PSMA, ROR1, TAG-72, and VEGF-R2.

8. The method of claim 7 , wherein the first antigen is selected from the group consisting of CD19, PSMA, mesothelin, and CD56.

9. The method of claim 1 , wherein the iCAR further comprises a transmembrane domain selected from the group consisting of a CD4 polypeptide, a CD8 polypeptide, a CTLA-4 polypeptide, a PD-l polypeptide, a LAG-3 polypeptide, a 2B4 polypeptide, and a BTLA polypeptide.

10. The method of claim 1 , wherein the second antigen is selected from the group consisting of an Epithelial-mesenchymal transition (EMT) antigen, cytokeratin, human leukocyte antigens (HLAs), Opioid-binding protein/cell adhesion molecule (OPCML), HYAL2, Deleted in Colorectal Carcinoma (DCC), Scaffold/Matrix attachment region-binding protein 1 (SMAR1), CD33, CD38, and E-cadherin.

11. The method of claim 1 , wherein the method reduces the burden of the tumor.

12. The method of claim 1 , wherein the method reduces the number of the tumor cells.

13. The method of claim 1 , wherein the method reduces the size of the tumor.

14. The method of claim 1 , wherein the method eradicates the tumor in the subject.

15. The method of claim 1 , wherein the tumor is cancer.

16. The method of claim 1 , wherein the tumor is a solid tumor.

17. The method of claim 1 , wherein the tumor is a hematological tumor.

18. The method of claim 1 , wherein the tumor is selected from the group consisting of blood cancer, B cell leukemia, multiple myeloma, acute lymphoblastic leukemia (ALL), chronic lymphocytic leukemia (CLL), non-Hodgkin's lymphoma, ovarian cancer, prostate cancer, pancreatic cancer, lung cancer, breast cancer, sarcoma, and acute myeloid leukemia (AML).

Continuity (4)
Division 14851983 · Sep 11, 2015
Continuation PCTUS2014030671 · Mar 17, 2014
Provisional Application 61802118 · Mar 15, 2013
Related Publication 20220162340A1 · May 26, 2022
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