Truncated rotavirus VP4 protein and application thereof

Patent metadata

Field	Value
Publication number	US-11339194-B2
Application number	US-202016901410-A
Country	US
Kind code	B2
Filing date	Jun 15, 2020
Priority date	May 21, 2015
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

The invention relates to a truncated rotavirus VP4 protein, a sequence encoding the same, a method for preparing the same, and a pharmaceutical composition and a vaccine comprising the protein, wherein the protein, the pharmaceutical composition and the vaccine are useful for preventing, alleviating or treating rotavirus infection and a disease caused by rotavirus infection, such as rotavirus gastroenteritis and diarrhea. The invention further relates to use of the protein in the manufacture of a pharmaceutical composition or a vaccine for preventing, alleviating or treating rotavirus infection and a disease caused by rotavirus infection, such as rotavirus gastroenteritis and diarrhea.

First claim

What is claimed is:

1. An isolated nucleic acid encoding a truncated rotavirus VP4 protein, wherein as compared to a wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the segment of the first X amino acids at the N-terminal of the wild-type rotavirus VP4 protein as a whole and replaced with one methionine residue, and has its C-terminal ending at the following position of the wild-type rotavirus VP4 protein: a position corresponding to any position among the amino acid positions 331-497 of SEQ ID NO: 40, wherein X is an integer that is greater than or equal to 5 but less than or equal to 64.

2. The isolated nucleic acid according to claim 1 , wherein as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first X amino acids at the N-terminal mutated as methionine; and has C-terminal ending at the following position of the wild-type rotavirus VP4 protein: a position corresponding to any position among the amino acid positions 331-497, 341-497, 351-497, 361-497, 371-497, 381-497, 391-497, 401-497, 411-497, 421-497, 431-497, 441-497, 451-497, 461-497, 471-497, 476-497, 482-497, 487-497, or 492-497 of SEQ ID NO: 40, wherein X is an integer that is greater than or equal to 5 but less than or equal to 64.

3. The isolated nucleic acid according to claim 1 , wherein as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 5, 21, 25 or 64 amino acids at the N-terminal mutated as methionine, and has C-terminal ending at the following position of the wild-type rotavirus VP4 protein: a position corresponding to the amino acid position 331, 341, 351, 361, 371, 381, 391, 401, 411, 421, 431, 441, 451, 461, 471, 476, 482, 487, 492 or 497 of SEQ ID NO: 40.

4. The isolated nucleic acid according to claim 1 , wherein as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 25 amino acids at N-terminal mutated as methionine and has C-terminal ending at the following position: a position corresponding to the amino acid position 331, 351, 381, 411, 441, 461, 471, 476, 482, 487, 492 or 497 of SEQ ID NO: 40.

5. The isolated nucleic acid according to claim 1 , wherein as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 5, 21, 25 or 64 amino acids at N-terminal mutated as methionine and has C-terminal ending at the following position: a position corresponding to the amino acid position 476 of SEQ ID NO: 40.

6. The isolated nucleic acid according to claim 1 , wherein the wild-type rotavirus VP4 protein is a VP4 protein derived from rotavirus LLR strain, SA11 strain, or EDIM strain, or a VP4 protein derived from a rotavirus of P[4], P[6], or P[8] genotype.

7. The isolated nucleic acid according to claim 1 , wherein the wild-type rotavirus VP4 protein has an amino acid sequence selected from: SEQ ID NO: 40 and 87-91.

8. The isolated nucleic acid according to claim 1 , wherein the truncated rotavirus VP4 protein has an amino acid sequence selected from: SEQ ID NO: 3-5 and 15-39.

9. A vector comprising the isolated nucleic acid according to claim 1 .

10. The vector according to claim 9 , characterized by any one of the following:
(1) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first X amino acids at the N-terminal mutated as methionine; and has C-terminal ending at the following position of the wild-type rotavirus VP4 protein: a position corresponding to any position among the amino acid positions 331-497, 341-497, 351-497, 361-497, 371-497, 381-497, 391-497, 401-497, 411-497, 421-497, 431-497, 441-497, 451-497, 461-497, 471-497, 476-497, 482-497, 487-497, or 492-497 of SEQ ID NO: 40, wherein X is an integer that is greater than or equal to 5 but less than or equal to 64;
(2) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 5, 21, 25 or 64 amino acids at the N-terminal mutated as methionine, and has C-terminal ending at the following position of the wild-type rotavirus VP4 protein: a position corresponding to the amino acid position 331, 341, 351, 361, 371, 381, 391, 401, 411, 421, 431, 441, 451, 461, 471, 476, 482, 487, 492 or 497 of SEQ ID NO: 40;
(3) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 25 amino acids at N-terminal mutated as methionine and has C-terminal ending at the following position: a position corresponding to the amino acid position 331, 351, 381, 411, 441, 461, 471, 476, 482, 487, 492 or 497 of SEQ ID NO: 40;
(4) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 5, 21, 25 or 64 amino acids at N-terminal mutated as methionine and has C-terminal ending at the following position: a position corresponding to the amino acid position 476 of SEQ ID NO: 40;
(5) the wild-type rotavirus VP4 protein is a VP4 protein derived from rotavirus LLR strain, SA11 strain, or EDIM strain, or a VP4 protein derived from a rotavirus of P[4], P[6], or P[8] genotype;
(6) the wild-type rotavirus VP4 protein has an amino acid sequence selected from: SEQ ID NO: 40 and 87-91; and
(7) the truncated rotavirus VP4 protein has an amino acid sequence selected from: SEQ ID NO: 3-5 and 15-39.

11. An isolated host cell comprising the isolated nucleic acid according to claim 1 or a vector comprising the isolated nucleic acid.

12. The host cell according to claim 11 , characterized by any one of the following:
(1) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first X amino acids at the N-terminal mutated as methionine; and has C-terminal ending at the following position of the wild-type rotavirus VP4 protein: a position corresponding to any position among the amino acid positions 331-497, 341-497, 351-497, 361-497, 371-497, 381-497, 391-497, 401-497, 411-497, 421-497, 431-497, 441-497, 451-497, 461-497, 471-497, 476-497, 482-497, 487-497, or 492-497 of SEQ ID NO: 40, wherein X is an integer that is greater than or equal to 5 but less than or equal to 64;
(2) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 5, 21, 25 or 64 amino acids at the N-terminal mutated as methionine, and has C-terminal ending at the following position of the wild-type rotavirus VP4 protein: a position corresponding to the amino acid position 331, 341, 351, 361, 371, 381, 391, 401, 411, 421, 431, 441, 451, 461, 471, 476, 482, 487, 492 or 497 of SEQ ID NO: 40;
(3) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 25 amino acids at N-terminal mutated as methionine and has C-terminal ending at the following position: a position corresponding to the amino acid position 331, 351, 381, 411, 441, 461, 471, 476, 482, 487, 492 or 497 of SEQ ID NO: 40;
(4) as compared to the wild-type rotavirus VP4 protein, the truncated rotavirus VP4 protein has the first 5, 21, 25 or 64 amino acids at N-terminal mutated as methionine and has C-terminal ending at the following position: a position corresponding to the amino acid position 476 of SEQ ID NO: 40;
(5) the wild-type rotavirus VP4 protein is a VP4 protein derived from rotavirus LLR strain, SA11 strain, or EDIM strain, or a VP4 protein derived from a rotavirus of P[4], P[6], or P[8] genotype;
(6) the wild-type rotavirus VP4 protein has an amino acid sequence selected from: SEQ ID NO: 40 and 87-91; and
(7) the truncated rotavirus VP4 protein has an amino acid sequence selected from: SEQ ID NO: 3-5 and 15-39.

13. A composition comprising any o

Assignees

• Univ Xiamen
• Xiamen Innovax Biotech Co Ltd

Inventors

• Ge Shengxiang
• Li Tingdong
• Jia Lianzhi
• Li Yijian
• Xue Miaoge
• Zeng Yuanjun
• Pan Huirong
• Zhang Jun
• Xia Ningshao

Classifications

• C07K14/005 Primary

  from viruses · CPC title

• A61K39/12 Primary

  Viral antigens · CPC title

• C12N2720/12322

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

• A61P1/00

  Drugs for disorders of the alimentary tract or the digestive system · CPC title

• C12N2720/12351

  Methods of production or purification of viral material · CPC title