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- W2024453948 abstract "To date, no DNA regions involved in the neuron-specific expression of the neurofilament light gene (NF-L) have been defined using transfection assays in cultured cells. To identify those regulatory regions in the human NF-L gene, we generated transgenic mice with a construct containing the basal NF-L promoter (−292 to +15) fused to the cat gene and with three DNA fragments of 21.5, 7.6 and 4.9 kb each, including NF-L with different lengths of either 5′- or 3′-flanking sequences. We show that the proximal NF-L 5′ region (0.3 kb) constitutes a weak promoter and that it lacks information to confer neural specificity. However, appropriate expression in the nervous system occurred when this minimal promoter was combined with either 7.3 or 4.6 kb of NF-L sequences downstream from the transcription start point. We conclude that the intragenic NF-L region contains cis-acting elements conferring cell-type-specific regulation on the basal activity of the NF-L promoter. Interestingly, AP-2 motifs were found within homologously placed introns of all three NF genes, as well as in the promoter regulatory regions of many neuronal genes. We propose that the acquisition of introns by an ancestral intronless IF gene may have contributed to the emergence of a lineage of IF genes expressed in the nervous system." @default.
- W2024453948 created "2016-06-24" @default.
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- W2024453948 date "1992-07-01" @default.
- W2024453948 modified "2023-10-13" @default.
- W2024453948 title "Intragenic regulatory elements contribute to transcriptional control of the neurofilament light gene" @default.
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- W2024453948 doi "https://doi.org/10.1016/0378-1119(92)90517-s" @default.
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