Nucleotide sequences for gene regulation and methods of use thereof
View Patent ↗The invention provides nucleic acid sequences which regulate expression of a nucleotide sequence of interest. In particular, the invention provides nucleic acid sequences which regulate expression of a nucleotide sequence of interest in an age-related manner and/or in a liver-specific manner. The invention further provides methods of using the regulatory nucleic acid sequences provided herein for age-related and/or liver-specific expression of nucleotides seuqences of interest. The invention also provides host cells and transgenic non-human animals which harbor the regulatory nucleic acid sequences of the invention. The compositions and methods of the invention are useful in regulating expression of a nucleotide sequence of interest in an age-related and/or liver-specific manner.
1. A method of expressing a nucleic acid sequence of interest in a mammalian cell, comprising:
a) providing:
i) an isolated mammalian cell selected from the group consisting of (a) a liver cell, and (b) a mouse cell selected from the group consisting of an embryonic stem cell, an eight-cell embryo cell, a blastomere cell, a blastocoele cell, and a fertilized egg cell;
ii) a nucleic acid sequence of interest heterologous to SEQ ID NO:3;
iii) a promoter sequence, and
iv) one or more age regulatory sequences selected from SEQ ID NO:3 and a functional portion of SEQ ID NO:3;
b) operably linking said nucleic acid sequence of interest, said promoter sequence, and said one or more age regulatory sequences to produce a transgene, wherein said age regulatory sequence comprised in said transgene is located at a position selected from the group consisting of the 3′ end of said promoter sequence and the 3′ end of said nucleic acid sequence of interest; and
c) introducing said transgene into said mammalian cell under conditions such that said nucleic acid sequence of interest is expressed in said mammalian cell.
2. The method of claim 1 , wherein said promoter sequence is a human factor IX promoter, said nucleic acid sequence of interest encodes a PEA-3 protein, and said mammalian cell is a liver cell.
3. The method of claim 1 , wherein said promoter sequence is a human factor IX promoter, said nucleic acid sequence of interest encodes a PEA-3 protein, and said mammalian cell is mouse cell selected from the group consisting of an embryonic stem cell, an eight-cell embryo cell, a blastocoele cell, a blastomere cell, a fertilized egg cell, and a liver cell.
4. The method of claim 1 , wherein said functional portion of SEQ ID NO:3 is selected from the group consisting of SEQ ID NO:51, SEQ ID NO:52, SEQ ID NO:53, SEQ ID NO:54, SEQ ID NO:55, and SEQ ID NO:56.
5. A method of expressing a protein in a mammalian cell, comprising:
a) providing:
i) an isolated mammalian cell selected from a liver cell and a mouse cell, said mouse cell selected from the group consisting of a fertilized egg cell, an embryonic stem cell, a blastomere cell, a blastocoele cell, and an eight-cell embryo cell;
ii) a nucleic acid sequence of interest heterologous to SEQ ID NO:3 encoding a protein;
iii) a human Factor IX promoter sequence; and
iv) one or more age regulatory sequences selected from the group consisting of SEQ ID NO:3 and a functional portion of SEQ ID NO:3;
b) operably linking said nucleic acid sequence, said human Factor IX promoter sequence, and said one or more age regulatory sequences to produce a transgene, wherein said age regulatory sequence comprised in said transgene is located at a position selected from the group consisting of the 3′ end of said promoter sequence and the 3′ end of said nucleic acid sequence; and
c) introducing said transgene into said mammalian cell under conditions such that said protein is expressed in said mammalian cell.
6. The method of claim 1 , wherein said nucleic acid sequence of interest comprises a structural gene.