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Ectopic induction of dorsal mesoderm by overexpression of Xwnt-8 elevates the neural competence of Xenopus ectoderm.

Abstract：

:The ectoderm of early Xenopus gastrula is competent to become induced to neural tissue, but dorsal ectoderm is more neural competent than ventral ectoderm. It is a tenable, but as yet untested possibility that the higher neural competence of dorsal gastrula ectoderm is dependent on the presence of the dorsal mesoderm. To test this hypothesis we overexpressed Xwnt-8 in order to ectopically induce dorsal mesoderm in the ventral side of the embryo. We found that this elevated the level of neural competence of ventral ectoderm to that of dorsal ectoderm. The effect of Xwnt-8 on neural competence of ventral ectoderm was strictly correlated with its ability to enhance the amount of dorsal structures. The data indicate that the presence of dorsal mesoderm is a prerequisite for establishing the differences in neural competence between gastrula dorsal and ventral ectoderm.

journal_name

Dev Biol

journal_title

Developmental biology

authors

Otte AP,Moon RT

doi

10.1016/0012-1606(92)90168-g

subject

Has Abstract

pub_date

1992-07-01 00:00:00

pages

184-7

issue

1

eissn

0012-1606

issn

1095-564X

pii

0012-1606(92)90168-G

journal_volume

152

pub_type

杂志文章

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