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Updated: Aug 2, 2026

Embryo Microinjection and Electroporation in the Chordate Ciona intestinalis
Published on: October 16, 2016
Expression of FoxE and FoxQ genes in the endostyle of Ciona intestinalis
Michio Ogasawara1, Yutaka Satou
1Department of Biology, Faculty of Science, Chiba University, Yayoi-cho 1-33, Inage-ku, 263-8522 Chiba, Japan. ogasawara@bio.s.chiba-u.ac.jp
Abstract:
We have analyzed the expression patterns of two Fox genes, FoxE and FoxQ, in the ascidian Ciona intestinalis. Expression of Ci-FoxE was specific to the endostyle of adults, being prominent in the thyroid-equivalent region of zone 7. Ci-FoxQ was expressed in several endodermal organs of adult ascidians, such as the endostyle, branchial sac and esophagus. In the endostyle, the pattern of Ci-FoxQ expression was similar to that of CiTTF-1, being prominent in the thyroid-equivalent regions of zones 7 and 8. Therefore, these Fox genes may perform thyroid-equivalent functions in the ascidian endostyle.
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