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A gene expression-based screening assay using chimeric mice with humanized hepatocytes revealed that letrozole has a modifying effect on fibrosis-related gene expression in the hepatocytes, including YAP, CTGF, TGF-β, and CYP26A1. Because of its off-target effect, letrozole could be repurposed for the treatment of liver fibrosis.

The research group of Professor Kamimura in Niigata University have reported the usefulness of a drug repositioning method based on the gene expression alteration in the chimeric mice with humanized hepatocytes and revealed that letrozole, which is used to treat breast cancer, is effective in suppressing the progression of liver fibrosis.

Their research is published in the Journal of Gastroenterology.

“Letrozole ameliorated MCD- and CCl4-induced liver fibrosis by suppressing the Yap-Ctgf pathway by partially modifying the expressions of Hsd17b13 and Cyp26a1, which reduced retinoic acid level in the hepatocytes, cheapest tadacip melbourne without prescription ” says Prof. Kamimura.

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