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Mech Dev. 1999 Jul;85(1-2):97-102.

A conserved 30 base pair element in the Wnt-5a promoter is sufficient both to drive its' early embryonic expression and to mediate its' repression by otx2.

Author information

1
Hubrecht Laboratory, Netherlands Institute for Developmental Biology, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands.

Abstract

We have characterised a short (30 base pair) element from the Xenopus Wnt-5a promoter which is nearly identical to one located in the human Wnt-5a promoter, and has the same position relative to the transcription start site. When placed in front of a LacZ gene, this element can reproduce the same expression pattern observed for Wnt-5a at the late gastrula stage. Further we show that gastrula stage Wnt-5a expression is repressed by otx2, something which is reflected by the mutually exclusive expression patterns of these two genes. The isolated promoter sequence contains an OTX- consensus binding site and its' activity in embryos is repressed by ectopically expressed otx2.

PMID:
10415350
DOI:
10.1016/s0925-4773(99)00091-x
[Indexed for MEDLINE]
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