Vectors encoding cell growth and adhesion factors for simultaneous growth and adhesion of cells
View Patent ↗The present invention relates to endothelial and smooth muscle cells genetically altered to express or over-express one or more cell adhesion factors. The invention further relates to cells genetically altered to express or over-express both cell proliferation growth factor(s) and cell adhesion factor(s). In addition, the present invention relates to nucleic acid constructs and nucleic acid construct systems that encode the cell adhesion and cell proliferation growth factors that are used to transfect/transform the cells so that they can express the factors.
1. An expression vector comprising: a first polynucleotide sequence encoding vascular endothelial growth factor (VEGF); and, a second polynucleotide sequence encoding fibulin-5.
2. The expression vector of claim 1 , wherein said VEGF is VEGF-A.
3. The expression vector of claim 1 , further comprising a promoter sequence that directs expression of both the first and second polynucleotide sequences.
4. The expression vector of claim 3 , wherein the promoter sequence is independently selected from the group consisting of a constitutive promoter, an inducible promoter and a tissue specific promoter sequence.
5. The expression vector of claim 1 , further comprising two promoter sequences, one of which directs expression of the first polynucleotide sequence and the other of which directs expression of the second polynucleotide sequence.
6. The expression vector of claim 5 , wherein the promoter sequences are independently selected from the group consisting of a constitutive promoter, an inducible promoter and a tissue specific promoter sequence.
7. The expression vector of claim 5 , wherein the first and second promoter sequences both comprise inducible promoter sequences.
8. The expression vector of claim 7 , wherein the first and second inducible promoter sequences are regulated by the same effector molecule.
9. The expression vector of claim 1 , further comprising a linker sequence interposed between the first and the second polynucleotide segments.
10. The expression vector of claim 9 , where the linker sequence comprises an internal ribosome entry site (IRES) or encodes a protease cleavage recognition site.
11. The expression vector of claim 1 , further comprising a third polynucleotide sequence encoding a marker polypeptide.
12. The expression vector of claim 11 , wherein the marker polypeptide is selected from the group consisting of a selection marker and a reporter marker.
13. The expression vector of claim 11 , wherein the polynucleotide sequence encoding the marker polypeptide is transcriptionally linked to the first or the second polynucleotide sequence.
14. The expression vector of claim 13 , wherein the transcriptional link comprises an IRES or encodes a protease cleavage recognition site.
15. The expression vector of claim 11 , wherein the polynucleotide sequence encoding the marker polypeptide is translationally fused to the first or the second polynucleotide segment.
16. A composition comprising: a first expression vector comprising a first polynucleotide sequence encoding vascular endothelial growth factor (VEGF); and a second expression vector comprising a second polynucleotide sequence encoding fibulin-5.