Administration of kynurenine depleting enzymes for tumor therapy

Patent metadata

Field	Value
Publication number	US-11168142-B2
Application number	US-201815961968-A
Country	US
Kind code	B2
Filing date	Apr 25, 2018
Priority date	Aug 29, 2014
Publication date	Nov 9, 2021
Grant date	Nov 9, 2021

Abstract

Methods and compositions related to the use of a protein with kynureninase activity are described. For example, in certain aspects there may be disclosed a modified kynureninase capable of degrading kynurenine. Furthermore, certain aspects of the invention provide compositions and methods for the treatment of cancer with kynurenine depletion using the disclosed proteins or nucleic acids.

First claim

What is claimed is:

1. A method of treating a subject having a tumor that produces kynurenine, the method comprising administering to the subject an effective amount of a formulation comprising a modified human kynureninase enzyme in a pharmaceutically acceptable carrier, said modified enzyme having at least one substitution relative to native human kynureninase comprising the amino acid sequence of SEQ ID NO: 8, wherein the at least one substitution is at positions: (a) A99, F306, and A436; (b) A99, G112, F306, L337, I405, and S408; (c) G112, F306, L337, and I405; (d) A99, T138, F306, and A436; (e) A99, G112, F306, V339, I405, and S408; (f) A99 and F306; (g) F306, L337, V339, I405, and S408; (h) G112, F306, V339, and I405; (i) G112, F306, V339, and S408; (k) F71, A99, G112, T138, F306, L337, V339, I405, S408, and A436; (1) A99, G112, F306, L337, V339, I405, and S408; (m) A436; (n) A99, G112, T138, V339, and I405; (p) A99, G112, F306, I405, S408, and A436; (q) F71, A99, I131, F249, and L322; (r) A99, I131, F249, E259, and F306; (s) F71, A99, and E259; (t) F71, A99, S167, and E259; (u) I131, F249, and S274; (v) L59, G112, F306, V339, I405, and S408; (w) I110 and F306; (x) A99, I131, F249, and E259; (y) F71, E259, and L322; (z) H41, Q175, and A436; (a′) A99, I131, and F249; (b′) I131 and F249; (c′) T138 and A436; (d′) T138; (e′) F71, A99, I131, E259, and V303; (f) A99, G112, F306, V339, 1405, and S408; (g′) F71, A99, I131, E259, and A282; (h′) F71, F249, E259, and V303; or (i′) I110, wherein the administration treats the tumor in the subject.

2. The method of claim 1 , wherein said at least one substitution is:
(a) A99S, F306L, and A436T; (b) A99V, G112A, F306Y, L337V, I405L, and S408N; (c) G112A, F306Y, L337V, and I405L; (d) A99S, T138S, F306L, and A436T; (e) A99V, G112A, F306Y, V339A, I405L, and S408N; (f) A99S and F306L; (g) F3061, L337V, V339I, 1405F, and S408T; (h) G112A, F306Y, V339M, and I405L; (i) G112S, F306L, V339T, and S408T; (j) G112A, F306Y, V339S, and I405L; (k) F71L, A99I, G112A, T138S, F306Y, L337V, V339I, I405L, S408N, and A436T; (1) A99V, G112A, F306Y, L337V, V339I, 1405F, and S408N; (m) A436T; (n) A99V, G112A, T138S, V339A, and 1405F; (o) G112S, F306Y, V339T, and I405L; (p) A99I, G112A, F306Y, I405L, S408N, and A436T; (q) F71L, A99I, I131V, F249W, and L322P; (r) A99I, I131V, F249W, E259P, and F306L; (s) F71L, A99I, and E259P; (t) F71L, A99I, S167T, and E259P; (u) I131M, F249W, and S274G; (v) L59M, G112S, F306Y, V339A, I405L, and S408N; (w) I110L and F306L; (x) A99I, I131V, F249W, and E259P; (y) F71L, E259P, and L322P; (z) H41R, Q175L, and A436T; (a′) A99I, I131V, and F249W; (b′) I131V and F249W; (c′) T138S and A436T; (d′) T138S; (e′) F71L, A99I, I131V, E259P, and V303S; (f) A99F, G112A, F306Y, V339A, I405L, and S408N; (g′) F71L, A99I, I131V, E259P, and A282P; (h′) F71L, F249W, E259P, and V303S; or (i′) I110L.

3. The method of claim 1 , wherein the modified enzyme further comprises a heterologous peptide segment.

4. The method of claim 1 , wherein the modified enzyme is coupled to at least one polyethylene glycol (PEG).

5. The method of claim 4 , wherein the modified enzyme is coupled to the at least one PEG via one or more Lys or Cys residues.

6. The method of claim 1 , wherein the modified enzyme has at least 90% sequence identity to SEQ ID NO: 8.

7. The method of claim 1 , wherein the modified enzyme has at least 95% sequence identity to SEQ ID NO: 8.

8. The method of claim 1 , wherein the modified enzyme further comprises one or more chemical modifications.

9. The method of claim 8 , wherein the one or more chemical modifications is at a substrate recognition site.

10. The method of claim 1 , wherein the modified enzyme is conjugated to an antibody.

11. The method of claim 10 , wherein the antibody is an scFv antibody.

12. The method of claim 10 , wherein the antibody is an anti-CTLA-4 antibody, an anti-PD1 antibody, or an anti-PD-L1 antibody.

13. The method of claim 1 , wherein the subject has been identified as having an IDO1, an IDO2, or a TDO expressing tumor.

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

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

16. The method of claim 1 , wherein the subject is a human patient.

17. The method of claim 1 , wherein the formulation is administered intratumorally, intravenously, intradermally, intraarterially, intraperitoneally, intralesionally, intracranially, intraarticularly, intraprostaticaly, intrapleurally, intratracheally, intraocularly, intranasally, intravitreally, intravaginally, intrarectally, intramuscularly, subcutaneously, subconjunctival, intravesicularlly, mucosally, intrapericardially, intraumbilically, orally, by inhalation, by injection, by infusion, by continuous infusion, by localized perfusion bathing target cells directly, via a catheter, or via a lavage.

18. The method of claim 1 , further comprising administering to the subject at least a second anticancer therapy.

19. The method of claim 18 , wherein the second anticancer therapy comprises surgical therapy, chemotherapy, radiation therapy, cryotherapy, hormone therapy, immunotherapy, or cytokine therapy.

20. The method of claim 18 , wherein the second anticancer therapy comprises an anti-PD1 antibody, an anti-CTLA-4 antibody, or an anti-PD-L1 antibody.

Assignees

• Univ Texas

Inventors

• Georgiou George
• Stone Everett
• Marshall Nicholas
• Blazeck John
• Lu Wei-Cheng

Classifications

• C12Y307/01003

  Kynureninase (3.7.1.3) · CPC title

• C12N9/96

  Stabilising an enzyme by forming an adduct or a composition; Forming enzyme conjugates · CPC title

• C12N9/14 Primary

  Hydrolases (3) · CPC title

• C07K2319/01

  containing a localisation/targetting motif · CPC title

• C07K2317/622

  Single chain antibody (scFv) · CPC title