Journal of Guangxi Normal University(Natural Science Edition) ›› 2023, Vol. 41 ›› Issue (2): 147-153.doi: 10.16088/j.issn.1001-6600.2022040805

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Construction of Sdr9c7 Gene Conditional Knockout Mice and Phenotypic Analysis

ZHOU Jing1,2,3, LI Yinling1,3, CHEN Qiaoyuan1,3, LIN Wanhua1,2,3*   

  1. 1. Guangxi Universities Key Laboratory of Stem Cell and Biopharmaceutical Technology (Guangxi Normal University), Guilin Guangxi 541004, China;
    2. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (GuangxiNormal University), Ministry of Education, Guilin Guangxi 541006, China;
    3. College of Life Sciences, Guangxi Normal University, Guilin Guangxi 541006, China
  • Received:2022-04-08 Revised:2022-05-27 Online:2023-03-25 Published:2023-04-25

Abstract: The mice carrying mutant Sdr9c7 gene with loxP site in the intron regions on both sides of its exon 2 were mated with K14-Cre mice, and their offspring were hybridized to obtain epithelial cell Sdr9c7 gene specific knockout mice. The offspring genotyped with Sdr9c7fl/flK14Cre+ were regarded as Sdr9c7 gene epithelial cell conditional knockout mice. Phenotype of mice was observed under stereoscope, HE stained skin paraffin sections were prepared for microscopic observation of the morphological structure of mouse skin, and the barrier function of mouse skin was detected by toluidine blue stain permeation assay. The results revealed that Sdr9c7fl/flK14Cre+ mice exhibited skin cyanosis and died within 6 to 8 hours after birth. HE staining revealed Sdr9c7fl/flK14Cre+ mice had abnormal skin stratum corneum structure which was tightly accumulated. Toluidine blue stain permeation assay showed that the stain could pass through the skin barrier of Sdr9c7fl/flK14Cre+ mice and stain the skin darker, indicating that the epidermal barrier function was disrupted.

Key words: Sdr9c7 gene, epithelial cells, conditional knockout, skin barrier

CLC Number: 

  • Q78
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