IP Library › Granted Patent US 12,600,757
Granted Patent B2
US 12,600,757 · App. 16/603,040 · Granted Apr 14, 2026

Peptides inhibiting gamma-c-cytokine activity and methods of use

Inventors: Nicholas Doerr (Irvine, CA); Laith Q. Al-Mawsawi (Sherman Oaks, CA); Nazli Azimi (San Juan Capistrano, CA)
Assignee: Bioniz Therapeutics, Inc.
C07K14/55A61K8/64A61K47/646A61K47/65A61P1/00A61P3/10A61P17/06A61P17/14A61P19/00A61P19/02A61P25/28A61P35/02A61Q3/00A61Q19/08C07K14/5443A61K38/00C07K2319/02C07K2319/30
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Quick Facts
Patent No.
US 12,600,757
App. No.
16/603,040
Granted
Apr 14, 2026
Kind
B2
Abstract

Disclosed herein are stable peptide antagonists based on the consensus yc-subunit binding site to inhibit the activity of yc-cytokines. Such peptide antagonists are capable of inhibiting the activity of multiple yc-cytokine family members. The yc-family cytokines are associated with important human diseases, such as leukemia, autoimmune diseases, collagen diseases, diabetes mellitus, skin diseases, degenerative neuronal diseases and graft-versus-host disease (GvHD). Thus, inhibitors of yc-cytokine activity are valuable therapeutic and cosmetic agents as well as research tools.

Claims (20)

1 . A composite peptide comprising the amino acid sequence of SEQ ID NO: 83, wherein the composite peptide comprises at least one hydrocarbon linker element, and inhibits signaling activity of one or more γc-cytokines selected from the group consisting of IL-15 and IL-21.

2 . The composite peptide of claim 1 , wherein the composite peptide has enhanced gastric stability as compared to the corresponding composite peptide without a hydrocarbon linker element.

3 . The composite peptide of claim 1 , wherein the hydrocarbon linker element is an intra-peptide linker element.

4 . The composite peptide of claim 1 , wherein the at least one hydrocarbon linker element is covalently attached to one or more chemical groups or molecules selected from the group consisting of alkyl, alkaryl, aryl, aralkyl, alkoxy, thioalkoxy, aryloxy, haloalkyl, halo, oxo, nitro, hydroxy, mercapto, carboxy, alkylcarbonyl, alkoxycarbonyl, alkanesulfonyl, amino, amido, azido, cyano, PEG, affinity labels, targeting moiety, fatty-acid derived acyl group, biotin, radioisotopes, non-protein fluorescent chemical groups, and protein fluorescent molecules.

5 . A pharmaceutical composition comprising:

the composite peptide of claim 1 ; and

a pharmaceutically acceptable carrier, diluent, excipient or combination thereof.

6 . A kit comprising the pharmaceutical composition of claim 5 .

7 . A method of treating an IL-15 or IL-21-mediated disease, the method comprising administering the pharmaceutical composition of claim 5 .

8 . The method of claim 7 , wherein the IL-15 or IL-21-mediated disease is celiac disease or refractory celiac disease.

9 . A composite peptide comprising an amino acid sequence selected from the group consisting of SEQ ID NOS: 12 and 24, wherein the composite peptide comprises at least one hydrocarbon linker element, and inhibits signaling activity of one or more γc-cytokines selected from the group consisting of IL-15 and IL-21.

10 . The composite peptide of claim 9 , wherein the composite peptide has enhanced gastric stability as compared to the corresponding composite peptide without a hydrocarbon linker element.

11 . The composite peptide of claim 9 , wherein the hydrocarbon linker element is an intra-peptide linker element.

12 . The composite peptide of claim 9 , wherein the at least one hydrocarbon linker element is covalently attached to one or more chemical groups or molecules selected from the group consisting of alkyl, alkaryl, aryl, aralkyl, alkoxy, thioalkoxy, aryloxy, haloalkyl, halo, oxo, nitro, hydroxy, mercapto, carboxy, alkylcarbonyl, alkoxycarbonyl, alkanesulfonyl, amino, amido, azido, cyano, PEG, affinity labels, targeting moiety, fatty-acid derived acyl group, biotin, radioisotopes, non-protein fluorescent chemical groups, and protein fluorescent molecules.

13 . A pharmaceutical composition comprising:

the composite peptide of claim 9 ; and

a pharmaceutically acceptable carrier, diluent, excipient or combination thereof.

14 . A kit comprising the pharmaceutical composition of claim 13 .

15 . A method of treating an IL-15 or IL-21-mediated disease, the method comprising administering the pharmaceutical composition of claim 13 .

16 . The method of claim 15 , wherein the IL-15 or IL-21-mediated disease is celiac disease or refractory celiac disease.

Assignments (2)
MERGER AND CHANGE OF NAME Recorded Oct 6, 2023
From: BIONIZ, LLC; BIONIZ THERAPEUTICS, INC.
To: BIONIZ THERAPEUTICS, INC.
Reel/Frame 065153/0383 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 4, 2019
From: DOERR, NICHOLAS; AL-MAWSAWI, LAITH Q.; AZIMI, NAZLI
To: BIONIZ, LLC
Reel/Frame 050631/0830 →
Continuity (2)
Provisional Application 62483210 · Apr 7, 2017
Related Publication 20210324029A1 · Oct 21, 2021
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