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  • Title: Enhancer detection in the ascidian Ciona intestinalis with transposase-expressing lines of Minos.
    Author: Sasakura Y, Konno A, Mizuno K, Satoh N, Inaba K.
    Journal: Dev Dyn; 2008 Jan; 237(1):39-50. PubMed ID: 17948255.
    Abstract:
    Germline transgenesis with a Tc1/mariner superfamily Minos transposon was achieved in the ascidian Ciona intestinalis. Transgenic lines that express transposases in germ cells are very useful for remobilizing transposon copies. In the present study, we created transposase-expressing lines of Minos in Ciona. A Ciona gene encoding protamine (Ci-prm) is expressed in the testes and sperm. Transgenic lines expressing Minos transposase in the testes and sperm were created with a cis-element of Ci-prm, and used for enhancer detection. Double-transgenic animals between transposase lines and a transgenic line with an enhancer detection vector passed on several independent enhancer detection events to subsequent progeny. This technique allowed us to isolate transgenic lines that express GFP in restricted tissues. This system provides an easy and efficient method for large-scale enhancer detection in Ciona intestinalis.
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