Chikagunya virus RNA vaccines
View Patent ↗The disclosure relates to tropical diseases such as viral mosquito borne illnesses and the treatment thereof. The invention includes ribonucleic acid vaccines and combination vaccines, as well as methods of using the vaccines and compositions comprising the vaccines for treating and preventing tropical disease.
1. A Chikungunya virus (CHIKV) vaccine comprising at least one ribonucleic acid (RNA) polynucleotide having an open reading frame encoding at least one antigenic CHIKV polyprotein comprising C protein, E1 protein, E2 protein and E3 protein formulated in a lipid nanoparticle that comprises a molar ratio of 20-60% ionizable cationic lipid, 5-25% non-cationic lipid, 25-55% sterol, and 0.5-15% PEG-modified lipid, in an effective amount to induce an immune response in the subject.
2. The CHIKV vaccine of claim 1 , wherein the at least one antigenic CHIKV polyprotein further comprises 6K protein.
3. The CHIKV vaccine of claim 1 , wherein the at least one RNA polynucleotide further encodes at least one 5′ terminal cap, 7mG(5′)ppp(5′)NlmpNp.
4. The CHIKV vaccine of claim 1 , wherein at least 80% of the uracil in the open reading frame have a chemical modification selected from N1-methyl-pseudouridine or N1-ethyl-pseudouridine.
5. The CHIKV vaccine of claim 4 , wherein the chemical modification is in the 5-position of the uracil.
6. The CHIKV vaccine of claim 1 , wherein the efficacy of the vaccine is at least 60%, relative to unvaccinated subjects, following a single dose of the vaccine.
7. The CHIKV vaccine of claim 6 , wherein the efficacy of the vaccine is at least 70%, relative to unvaccinated subjects, following a single dose of the vaccine.
8. The CHIKV vaccine of claim 7 , wherein the efficacy of the vaccine is at least 80%, relative to unvaccinated subjects, following a single dose of the vaccine.
9. The CHIKV vaccine of claim 8 , wherein the efficacy of the vaccine is at least 90%, relative to unvaccinated subjects, following a single dose of the vaccine.
10. The CHIKV vaccine of claim 9 , wherein the effective amount is sufficient to produce detectable levels of CHIKV polyprotein as measured in serum of the subject at 1-72 hours post administration.
11. The CHIKV vaccine of claim 1 , wherein the effective amount is sufficient to produce a 1,000-10,000 neutralization titer produced by neutralizing antibody against the CHIKV polyprotein as measured in serum of the subject at 1-72 hours post administration.
12. The CHIKV vaccine of claim 1 , wherein an anti-CHIKV polyprotein antibody titer produced in the subject is increased by at least 1 log relative to a control, wherein the control is an anti-CHIKV polyprotein antibody titer produced in a subject who has not been administered a vaccine against CHIKV.
13. The CHIKV vaccine of claim 1 , wherein the anti-CHIKV polyprotein antibody titer produced in the subject is increased at least 2 times relative to a control, wherein the control is an anti-CHIKV polyprotein antibody titer produced in a subject who has not been administered a vaccine against CHIKV.
14. The CHIKV vaccine of claim 1 , wherein the effective amount is a total dose of 25 μg-200 μg.
15. The CHIKV vaccine of claim 14 , wherein the effective amount is a total dose of 25 μg-100 μg.
16. The CHIKV vaccine of claim 1 , wherein the ionizable cationic lipid comprises the following compound:
17. The CHIKV vaccine of claim 2 , wherein the at least one antigenic CHIKV polyprotein comprises an amino acid sequence that has at least 90% identity to the amino acid sequence identified by SEQ ID NO: 408.
18. The CHIKV vaccine of claim 17 , wherein the at least one antigenic CHIKV polyprotein comprises the amino acid sequence identified by SEQ ID NO: 408.
19. The CHIKV vaccine of claim 2 , wherein the at least one RNA polynucleotide has an open reading frame that comprises a nucleotide sequence that has at least 90% identity to the RNA sequence identified by SEQ ID NO: 401.
20. The CHIKV vaccine claim 19 , wherein the at least one RNA polynucleotide has an open reading frame that comprises the nucleotide sequence identified by SEQ ID NO: 401.
21. The CHIKV vaccine of claim 1 , wherein the CHIKV vaccine further comprises at least one RNA polynucleotide having an open reading frame encoding at least one Zika virus (ZIKV) antigenic polypeptide.
22. The CHIKV vaccine of claim 21 , wherein the at least one ZIKV antigenic polypeptide comprises an antigenic ZIKV prME protein.
23. The CHIKV vaccine of claim 22 , wherein the antigenic ZIKV prME protein comprises an amino acid sequence that has at least 90% identity to the amino acid sequence identified by SEQ ID NO: 203.
24. The CHIKV vaccine of claim 22 , wherein the at least one RNA polynucleotide having an open reading frame encoding at least one antigenic ZIKV prME protein comprises a nucleotide sequence that has at least 90% identity to the nucleotide sequence identified by SEQ ID NO: 139.
25. The CHIKV vaccine of claim 1 , wherein the CHIKV vaccine further comprises at least one RNA polynucleotide having an open reading frame encoding at least one antigenic Dengue virus (DENV) polypeptide.
26. The CHIKV vaccine of claim 25 , wherein the at least one antigenic DENV polypeptide comprises an antigenic DENV prME protein.
27. The CHIKV vaccine of claim 26 , wherein the antigenic DENV prME protein comprises an amino acid sequence that has at least 90% identity to the amino acid sequence identified by SEQ ID NO: 267.
28. The CHIKV vaccine of claim 26 , wherein the at least one RNA polynucleotide having an open reading frame encoding at least one antigenic DENV prME protein comprises a nucleotide sequence that has at least 90% identity to the nucleotide sequence identified by SEQ ID NO: 248.