Liver-specific viral promoters and methods of using the same
The present invention relates to promoters that function specifically or preferentially in the liver. These promoters are capable of enhancing liver-specific expression of genes. The invention also relates to expression constructs, vectors and cells comprising such liver-specific promoters, and to methods of their use. The present invention future relates to adeno-associated virus (AAV) gene therapy vectors comprising the liver-specific promoters, therapeutic agents comprising the liver-specific promoters, and methods using the same.
1. A synthetic polynucleotide, comprising:
(a) HNF1/HNF3 (SEQ ID NO:1),
(b) HNF3/HNF3 (SEQ ID NO:2),
(c) c/EBP/HNF4 (SEQ ID NO:3),
(d) HS_CRM2/HNF3 (SEQ ID NO:4), and
(e) HS_CRM8 (SEQ ID NO:6) or a variant thereof;
or wherein the variant of HS_CRM8 is selected from the group consisting of SEQ ID NO:5, SEQ ID NO:87, SEQ ID NO:88, SEQ ID NO:89, SEQ ID NO:90, SEQ ID NO:91, SEQ ID NO:92, SEQ ID NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:96, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, and SEQ ID NO:100.
2. The synthetic polynucleotide according to claim 1 , comprising at least SEQ ID NO:3
and SEQ ID NO:6 or a variant thereof.
3. The synthetic polynucleotide according to claim 1 , wherein the variant of the HS_CRM8 sequence is selected from the group consisting of SEQ ID NO:5, SEQ ID NO:87, SEQ ID NO:88, SEQ ID NO:89, SEQ ID NO:90, SEQ ID NO:91, SEQ ID NO:92, SEQ ID NO:93, SEQ ID NO:94, SEQ ID NO:95, SEQ ID NO:96, SEQ ID NO:97, SEQ ID NO:98, SEQ ID NO:99, and SEQ ID NO:100.
4. The synthetic polynucleotide of claim 1 , comprising the five promoter-derived nucleic acids (a)-(e).
5. The synthetic polynucleotide according to claim 4 , wherein the synthetic polynucleotide comprises consecutively from the 5′ end to the 3′end: SEQ ID NO:1, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:4, and SEQ ID NO:6.
6. The synthetic polynucleotide of claim 1 , further comprising at least one minimal promoter nucleic acid.
7. The synthetic polynucleotide according to claim 6 , wherein the minimal promoter nucleic acid is derived from SERPINE1 (SEQ ID NO:7), SERPINA1 (SEQ ID NO:8), APOC2 (SEQ ID NO:9), or G6PC (SEQ ID NO:10).
8. The synthetic polynucleotide according to claim 7 , wherein the minimal promoter nucleic acid comprises a sequence selected from the group consisting of: SEQ ID NOs: 7, 8, 9 and 10.
9. The synthetic polynucleotide of claim 7 , wherein the transgene encodes AAT, AGXT, ARG, ASL, ASS, ATP7B, BCKDHA, BCKDHB, CFH, CFTF, CPS, DBT, FAH, FIX, FVIII, HAMP, HFE, JH, MUT, NAGS, OTC, PCCA, PCCB, PI, SLC40A1, TFR2, TTR, UGT1A1, Urokinase, or PXBP.
10. The synthetic polynucleotide of claim 1 , further comprising at least one of:
(i) at least one spacer nucleic acid located between two of the promoter-derived nucleic acids; and,
(ii) an operably linked nucleic acid sequence encoding an intron.
11. The synthetic polynucleotide of claim 10 , wherein the intron is derived from SV40.
12. The synthetic polynucleotide of claim 1 , wherein the synthetic polynucleotide is less than 250 base pairs in length.
13. The synthetic polynucleotide of claim 12 , wherein the polynucleotide is less than 250 base pairs in length.
14. The synthetic polynucleotide of claim 1 , wherein the polynucleotide has a sequence selected from the group consisting of SEQ ID NOs: 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 41-45, 53-58, 67-69 and 73-86.
15. The synthetic polynucleotide of claim 1 , wherein:
(i) the synthetic polynucleotide promotes liver-specific transgene expression in the liver,
(ii) the synthetic polynucleotide is suitable for promoting liver-specific transgene expression at a level at least 1.5 fold greater than an LP1 promoter,
(iii) the synthetic polynucleotide has a reduced transgene expression at a level of at least 4 fold less than a CMV promoter in non-liver derived A549 cells,
(iv) the synthetic polynucleotide is suitable for promoting liver-specific transgene expression at a level at least 1.5 fold greater than a CMV promoter in liver-derived cells, or
(v) the synthetic polynucleotide has reduced transgene expression at a level of at least 1.5 fold less than an LP1 promoter in non-liver derived cells.
16. The synthetic polynucleotide of claim 1 , further comprising at least one of:
(i) an operably linked nucleic acid sequence encoding a post-transcriptional regulatory element;
(ii) an operably linked nucleic acid sequence encoding polyA element; and,
(iii) an operably linked transgene.
17. An expression cassette comprising a synthetic polynucleotide according to claim 1 and an operably linked polynucleotide sequence encoding a transgene, wherein the transgene encodes a therapeutic polypeptide suitable for use in treating a disease or condition associated with the liver.
18. The expression cassette according to claim 17 , further comprising at least one of:
(i) a nucleic acid encoding a posttranscriptional regulatory element; and,
(ii) a nucleic acid encoding a polyA element.
19. A gene therapy vector comprising the synthetic polynucleotide of claim 1 .
20. The gene therapy vector according to claim 1 , wherein the vector is a retroviral vector, a lentiviral vector, an adenoviral vector, or an adeno-associated viral vector (AAV).
21. The gene therapy vector of claim 20 , wherein the vector is an AAV is selected from the group consisting of AAV2, AAV5, AAV6, AAV7, AAV8, AAV9, AAV6.2, AAVrh.64R1, AAVhu.37, AAVrh.8, AAVrh.32.33, AAV3B, and LK03.
22. A recombinant viral particle comprising the synthetic polynucleotide of claim 1 .