Protease-activated cytokine

Patent metadata

Field	Value
Publication number	US-2024270806-A1
Application number	US-202418414813-A
Country	US
Kind code	A1
Filing date	Jan 17, 2024
Priority date	Jan 18, 2023
Publication date	Aug 15, 2024
Grant date	—

Abstract

The present invention relates to fusion proteins or protein complexes comprising a ligand binding moiety fused to a ligand moiety, wherein the ligand binding moiety comprises an IL-12 binding domain and a protease cleavage site that, when activated by cleavage by a protease, restores biological activity of the ligand moiety, wherein the ligand moiety is an IL-12 fusion protein. The invention also relates to a polypeptide representing a mutated p40 subunit of IL-12, and to an IL-12 fusion protein or a protein complex comprising the mutated p40 subunit. The invention also relates to anti-IL-12 binding molecule or anti-IL-12 binding molecule complex defined by its variable light and heavy chains. The invention also relates to polynucleotides encoding the fusion proteins or fusion protein complexes or polypeptides or binding molecules, to methods of producing same, to their uses and pharmaceutical compositions comprising same.

First claim

What is claimed is:

1 . An attenuated IL-12 polypeptide comprising a p40 subunit and a p35 subunit, wherein the p40 subunit comprises an asparagine (N), glutamic acid (E), glycine (G) or proline (P) residue at the amino acid position corresponding to residue 16 of SEQ ID NO: 44.

2 . The attenuated IL-12 polypeptide of claim 1 characterized by one or more of
(a) wherein the p40 subunit does not comprise the amino acid sequence of KSKREK (SEQ ID NO: 197), or KSKRE (SEQ ID NO: 361);
(b) wherein the attenuated IL-12 polypeptide is a single chain IL-12 polypeptide; and
(c) wherein the attenuated IL-12 polypeptide comprises the amino acid sequence of SEQ ID NO: 325 or 335.

3 . A fusion protein or protein complex comprising the attenuated IL-12 polypeptide of claim 1 .

4 . A polynucleotide encoding the attenuated IL-12 polypeptide of claim 1 .

5 . A recombinant host cell comprising a polynucleotide encoding the attenuated IL-12 polypeptide of claim 1 .

6 . A method of treating a disease or disorder in an individual in need thereof, comprising administering to said individual a therapeutically effective amount of the attenuated IL-12 polypeptide of claim 1 .

7 . A protein complex comprising two subunits associated with each other, wherein each subunit comprises a first polypeptide and a second polypeptide, wherein the first polypeptide comprises a light chain variable domain (VL) and a light chain constant domain (CL), and the second polypeptide is a fusion protein represented by the general formula (I), from the N- to the C-terminus:

wherein:
VH represents a heavy chain variable domain (VH), wherein the VH is associated with the VL of the first polypeptide to form a ligand-binding domain that binds to the ligand moiety,
Lx represents a cleavable peptide linker comprising a protease cleavage site,
Cx represents a constant domain associated with the CL of the first polypeptide,
wherein Cx comprises, from the N- to the C-terminus, a CH1 domain, a second peptide linker, a CH2 domain, and a CH3 domain,
Ly represents a third peptide linker, and
the ligand moiety is a protease resistant attenuated single-chain IL-12 fusion protein comprising a p40 subunit and a p35 subunit, wherein the p40 subunit comprises an asparagine (N), glutamic acid (E), glycine (G) or proline (P) residue at the amino acid position corresponding to residue 16 of SEQ ID NO: 44, and does not comprise the amino acid sequence of KSKREK (SEQ ID NO: 197), or KSKRE (SEQ ID NO: 361).

8 . The protein complex of claim 7 , wherein the protease resistant single-chain IL-12 fusion protein comprises the amino acid sequence of SEQ ID NO: 325 or 335.

9 . The protein complex of claim 7 , wherein
(a) the VH and VL comprises HCDR1, HCDR2, HCDR3, LCDR1, LCDR2, and LCDR3 comprising SEQ ID NO: 346, 348, 350, 352, 353, and 355, respectively, or SEQ ID NO: 346, 347, 349, 351, 353, and 355, respectively, or SEQ ID NO: 346, 347, 349, 351, 354, and 355, respectively; or SEQ ID NO: 346, 348, 350, 351, 353, and 355, respectively, or SEQ ID NO: 346, 348, 350, 351, 354, and 355, respectively, or SEQ ID NO: 346, 347, 349, 352, 353, and 355, respectively; or (b) the VH and VL comprises SEQ ID NO: 189 and 190, respectively, or SEQ ID NO: 340 and 343, respectively, or SEQ ID NO: 340 and 344, respectively, or SEQ ID NO: 341 and 344, respectively, or SEQ ID NO: 189 and 342, respectively, or SEQ ID NO: 189 and 191, respectively.

10 . The protein complex of claim 7 characterized by one or more of
(a) wherein Lx comprises the amino acid sequence of SEQ ID NO: 194 or 199;
(b) wherein Cx comprises the amino acid sequence of SEQ ID NO: 75; and
(c) wherein Ly comprises the amino acid sequence of SEQ ID NO: 68.

11 . The protein complex of claim 7 comprising two first polypeptides and two second polypeptides, wherein the first and second polypeptide comprises the amino acid sequence of SEQ ID NO: 249 and 121, respectively; or SEQ ID NO: 249 and 122, respectively; or SEQ ID NO: 264 and 121, respectively; or SEQ ID NO: 264 and 122, respectively; or SEQ ID NO: 247 and 121, respectively; or SEQ ID NO: 248 and 121, respectively; or SEQ ID NO: 250 and 121, respectively.

12 . A polynucleotide or a plurality of polynucleotides encoding the protein complex of claim 7 .

13 . A method of treating a disease or disorder in an individual in need thereof, comprising administering to said individual a therapeutically effective amount of the protein complex of claim 7 .

14 . An antibody that binds to human IL-12 and comprises:
(a) a HCDR1 of SEQ ID NO: 346; (b) a HCDR2 of SEQ ID NO: 347 or 348; (c) a HCDR3 of SEQ ID NO: 349 or 350; (d) a LCDR1 of SEQ ID NO: 351 or 352; (e) a LCDR2 of SEQ ID NO: 353 or 354; and (f) a LCDR3 of SEQ ID NO: 355, wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 does not comprise SEQ ID NO: 346, 348, 350, 352, 353 and 355, respectively.

15 . The antibody of claim 14 , wherein the HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3 comprises SEQ ID NO: 346, 347, 349, 351, 353 and 355, respectively, or SEQ ID NO: 346, 347, 349, 351, 354 and 355, respectively.

16 . The antibody of claim 14 , wherein
(a) the VH comprises SEQ ID NO: 189, 340 or 341 and the VL comprises SEQ ID NO: 190, 191, 342, 343 or 344, wherein the VH and VL does not comprise SEQ ID NO: 189 and 190, respectively; or (b) wherein the VH and VL comprises SEQ ID NO: 189 and 342, respectively, SEQ ID NO: 340 and 343, respectively, SEQ ID NO: 340 and 344, respectively, SEQ ID NO: 341 and 344, respectively, or SEQ ID NO: 189 and 191, respectively.

17 . The antibody of claim 14 which comprises an IgG antibody, IgG1 antibody, scFv, single-chain antibody, Fv, scFv2, Fab or F(ab′)2.

18 . A fusion protein or protein complex comprising the antibody of claim 14 and an IL-12 polypeptide.

19 . A polynucleotide encoding the antibody of claim 14 .

20 . A method of treating a disease or disorder in an individual in need thereof, comprising administering to said individual a therapeutically effective amount of the antibody of claim 14 .

21 . A protein complex comprising two subunits associated with each other, wherein each subunit comprises a first polypeptide and a second polypeptide, wherein the first polypeptide comprises a light chain variable domain (VL) and a light chain constant domain (CL), and the second polypeptide is a fusion protein represented by the general formula (I), from the N- to the C-terminus:

wherein:
VH represents a heavy chain variable domain (VH), wherein the VH is associated with the VL of the first polypeptide to form an affinity matured ligand-binding domain that binds to the ligand moiety, and wherein the VH and VL comprises the VH and VL of the antibody according to claim 16 ,
Lx represents a cleavable peptide linker comprising a protease cleavage site,
Cx represents a constant domain associated with the CL of the first polypeptide,
wherein Cx comprises, from the N- to the C-terminus, a CH1 domain, a second peptide linker, a CH2 domain, and a CH3 domain,
Ly represents a third peptide linker, and
the ligand moiety is a protease resistant single-chain IL-12 fusion protein.

22 . The

Assignees

• Chugai Pharmaceutical Co Ltd

Inventors

• Chichili Vishnu Priyanka Reddy
• Igawa Tomoyuki
• Yamamoto Yohei
• Hironiwa Naoka
• Nambu Takeru
• Kawa Tatsuya
• Katada Hitoshi
• Yasugi Tomoko
• Azuma Masahiro

Classifications

• C07K14/5434 Primary

  IL-12 · CPC title

• A61P35/00

  Antineoplastic agents · CPC title

• C07K2317/92

  Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value · CPC title

• C07K16/244

  Interleukins [IL] · CPC title

• C07K2317/52

  Constant or Fc region; Isotype · CPC title