Abstract
Recent results by Richardson et al. (Mech. Dev., 52 (1995) 165ȁ177) suggest that the Xenopus Rel gene XrelA may be involved in the formation of the head and tail of the early embryo. We present evidence to suggest that wild-type XrelA also has a role in dorsoventral development.XrelA overexpression in the dorsal side of embryos reduces dorsal development and attenuates in vitro dorsal morphogenetic movements.XrelA also strongly reduces axis duplication caused by overexpression of a dominant negative mutant of Xenopus glycogen synthase kinase-3β. Our results indicate that XrelA may have a role in dorsoventral patterning in early embryos.
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