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ISSN 1001-5256 (Print)
ISSN 2097-3497 (Online)
CN 22-1108/R
Volume 38 Issue 4
Apr.  2022
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Article Contents

Establishment of a mouse model of vascular endothelial-mesenchymal transdifferentiation genetic tracing and its role in liver fibrosis studies

DOI: 10.3969/j.issn.1001-5256.2022.04.018
Research funding:

The National Key Research and Development Program of China (2016YFA0102100);

National Natural Science Foundation of China (81770560);

National Natural Science Foundation of China (81800533)

More Information
  • Corresponding author: DOU Kefeng, doukef@fmmu.edu.cn (ORCID: 0000-0002-8857-5663)
  • Received Date: 2021-10-26
  • Accepted Date: 2021-11-28
  • Published Date: 2022-04-20
  •   Objective  To establish Cdh5-CreERT/Acta2-tdTomato-STOPfloxed-eGFP knockin genetic tracing mice, and to investigate its application in studies on vascular endothelial cell transition in liver fibrosis.  Methods  Cdh5-CreERT mice were mated with Acta2-KI mice, and the Cdh5-CreERT/Acta2-KI genetic tracing mice were obtained and identified by PCR genotyping. Primary liver sinusoid endothelial cells (LSECs) were isolated and cultured, and a model of CCl4-induced liver fibrosis was established. LSECs and liver tissue were collected for immunofluorescent staining to observe the expression of the fluorescent proteins tdTomato and eGFP.  Results  After being induced by tamoxifen, LSECs and liver tissue of Cdh5-CreERT/Acta2-KI genetic tracing mice expressed eGFP under the conditions for epithelial-mesenchymal transdifferentiation established in vivo and in vitro, while the control group without induction expressed tdTomato alone.  Conclusion  The successfully established Cdh5-CreERT/Acta2-KI genetic tracing mice can realize the effective labeling of epithelial-mesenchymal transdifferentiation, which provides a genetic tracing basis for the diverse sources of mesenchymal myofibroblasts in liver fibrosis.

     

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