Recombinant rota virus expression system and recombinant rota viruses

Patent metadata

Field	Value
Publication number	US-2025171502-A1
Application number	US-202418946551-A
Country	US
Kind code	A1
Filing date	Nov 13, 2024
Priority date	Jul 13, 2018
Publication date	May 29, 2025
Grant date	—

Abstract

Embodiments herein report compositions, methods, uses and manufacturing procedures for rotavirus constructs and immunogenic compositions thereof. Some embodiments concern compositions that include, but are not limited to, chimeric rotaviruses of use in immunogenic compositions against rotavirus infection as well as against other pathogenic virus infection in a subject. In certain embodiments, constructs of use herein can be generated and used where a rotavirus expression system further includes one or more nucleic acid molecules encoding one or more polypeptides of another pathogen (e.g. another enteric or mucosal pathogen).

First claim

What is claimed is:

1 . A recombinant rotavirus comprising:
a gene segment including a nucleotide sequence encoding at least one nucleotide sequence selected from the group consisting of: rotavirus nonstructural protein 1 (NSP1), rotavirus nonstructural protein 3 (NSP3), rotavirus nonstructural protein 5 (NSP5); and a nucleotide sequence encoding a non rotavirus polypeptide, wherein the (i) NSP1, NSP3, or NSP5 and (ii) the non-rotavirus polypeptide are encoded by a single open reading frame, separated by a self-cleavage protease domain.

2 . The recombinant rotavirus of claim 1 , wherein the self-cleavage protease domain is a 2A cleavage element.

3 . The recombinant rotavirus of claim 1 , wherein the self-cleavage protease domain is a tesco porcine virus 2A (P2A) element.

4 . The recombinant rotavirus of claim 3 , wherein the P2A element has a sequence having at least 80% sequence identity to SEQ ID NO: 1 (S KF QID KILIS GDIELNPGP).

5 . The recombinant rotavirus of claim 1 , wherein the non-rotavirus polypeptide is derived from a virus that causes gastroenteritis.

6 . The recombinant rotavirus of claim 1 , wherein the non-rotavirus polypeptide is derived from a virus selected from the group consisting of: norovirus, enterovirus, poliovirus, coxsackie virus, enterovirus, hepatitis A virus, hepatitis C virus, hepatitis E virus, calicivirus, astrovirus, parechovirus, reovirus, adenovirus, torovirus, picornavirus, and coronavirus.

7 . The recombinant rotavirus of claim 1 , wherein the non-rotavirus polypeptide induces an immunological response against a second virus that is not rotavirus.

8 . The recombinant rotavirus of claim 1 , wherein the non-rotavirus polypeptide induces an immunological response against a virus selected from the group consisting of: norovirus, enterovirus, poliovirus, coxsackie virus, enterovirus, hepatitis A virus, hepatitis C virus, hepatitis E virus, calicivirus, astrovirus, parechovirus, reovirus, adenovirus, torovirus, picomavirus, and coronavirus.

9 . The recombinant rotavirus of claim 1 , wherein the non-rotavirus polypeptide is selected from the group consisting of norovirus VP1 protein, noro virus P domain, and norovirus P2 domain.

10 . The recombinant rotavirus of claim 1 , wherein the recombinant rotavirus is based upon strain GIP.

11 . The recombinant rotavirus of claim 1 , wherein the recombinant rotavirus is attenuated.

Assignees

• Univ Indiana Trustees

Inventors

• Patton John Thomas
• Philip Asha Ann

Classifications

• C12N2720/12351

  Methods of production or purification of viral material · CPC title

• C12N2720/12334

  Use of virus or viral component as vaccine, e.g. live-attenuated or inactivated virus, VLP, viral protein · CPC title

• C12N2720/12322

  New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes · CPC title

• C12N2720/12321

  Viruses as such, e.g. new isolates, mutants or their genomic sequences · CPC title

• C12N7/00

  Viruses; Bacteriophages; Compositions thereof; Preparation or purification thereof (preparing medicinal viral antigen or antibody compositions, e.g. virus vaccines, A61K39/00) · CPC title