| 摘要 |
Isolated polynucleotides comprising a PITX3 promoter are provided, where a PITX3 regulatory element is operably joined to a PITX3 basal promoter utilizing a non-native spacing between the promoter and regulatory elements. The promoter may be operably linked to an expressible sequence, e.g. reporter genes, genes encoding a polypeptide of interest, regulatory RNA sequences such as miRNA, siRNA, anti-sense RNA, etc., and the like. In some embodiments a cell comprising a stable integrant of an expression vector is provided, which may be integrated in the genome of the cell. The promoter may also be provided in a vector, for example in combination with an expressible sequence. The polynucleotides find use in a method of expressing a sequence of interest, e.g. for identifying or labeling cells, monitoring or tracking the expression of cells, etc.
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