学術雑誌論文 Simple generation of hairless mice for in vivo imaging

Hoshino, Yoshikazu  ,  Mizuno, Seiya  ,  Kato, Kanako  ,  Mizuno-Iijima, Saori  ,  Tanimoto, Yoko  ,  Ishida, Miyuki  ,  Kajiwara, Noriko  ,  Sakasai, Tomoki  ,  Miwa, Yoshihiro  ,  Takahashi, Satoru  ,  Yagami, Ken-ichi  ,  Sugiyama, Fumihiro

66 ( 4 )  , pp.437 - 445 , 2017-10
ISSN:1341-1357
NII書誌ID(NCID):AA11032321
内容記述
The in vivo imaging of mice makes it possible to analyze disease progress non-invasively through reporter gene expression. As the removal of hair improves the accuracy of in vivo imaging, gene-modified mice with a reporter gene are often crossed with Hos:HR-1 mutant mice homozygous for the spontaneous Hrhr mutation that exhibit a hair loss phenotype. However, it is time consuming to produce mice carrying both the reporter gene and mutant Hrhr gene by mating. In addition, there is a risk that genetic background of the gene-modified mice would be altered by mating. To resolve these issues, we established a simple method to generate hairless mice maintaining the original genetic background by CRISPR technology. First, we constructed the pX330 vector, which targets exon 3 of Hr. This DNA vector (5 ng/µl) was microinjected into the pronuclei of C57BL/6J mice. Induced Hr gene mutations were found in many founders (76.1%) and these mutations were heritable. Next, we performed in vivo imaging using these gene-modified hairless mice. As expected, luminescent objects in their body were detected by in vivo imaging. This study clearly showed that hairless mice could be simply generated by the CRISPR/Cas9 system, and this method may be useful for in vivo imaging studies with various gene-modified mice.
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