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A transgene containing lacZ inserted into the dystonia locus is expressed in neural tube


The site of integration of transgenes in the host genome can affect levels of expression1 and occasionally confer ectopic patterns of expression on otherwise tissue-specific genes2. We describe here a line of mice in which an hsp68-lacZ transgene is expressed in unstressed developing neural tissue and where the transgene insertion has caused a mutation of a neural tissue-specific gene, dystonia musculorum (dt). This coincidence suggests that expression of the hsp68-lacZ construct may be controlled directly by cis-acting regulatory sequences that normally control the developmental expression of the dt gene. Such constructs may serve as useful tools for identifying new tissue-specific enhancers and their associated genes3,4.

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Kothary, R., Clapoff, S., Brown, A. et al. A transgene containing lacZ inserted into the dystonia locus is expressed in neural tube. Nature 335, 435–437 (1988).

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