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07-02-2024 | Repaglinide | Research

Repaglinide restrains HCC development and progression by targeting FOXO3/lumican/p53 axis

Authors: Yifei Tan, Yongjie Zhou, Wei Zhang, Zhenru Wu, Qing Xu, Qiong Wu, Jian Yang, Tao Lv, Lvnan Yan, Hong Luo, Yujun Shi, Jiayin Yang

Published in: Cellular Oncology

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Abstract

Purpose

The recent focus on the roles of N-linked glycoproteins in carcinogenesis across various malignancies has prompted our exploration of aberrantly expressed glycoproteins responsible for HCC progression and potential therapeutic strategy.

Methods

Mass spectrometry was applied to initially identify abnormally expressed glycoproteins in HCC, which was further assessed by immunohistochemistry (IHC) staining. The role of selected glycoprotein on HCC development and underlying mechanism was systematically investigated by colony formation, mouse xenograft, RNA-sequencing and western blot assays, etc. Chromatin immunoprecipitation (ChIP) and luciferase assays were performed to explore potential transcription factors (TFs) of selected glycoprotein. The regulation of repaglinide (RPG) on expression of lumican and downstream effectors was assessed by western blot and IHC, while its impact on malignant phenotypes of HCC was explored through in vitro and in vivo analyses, including a murine NASH-HCC model established using western diet and carbon tetrachloride (CCl4).

Results

Lumican exhibited upregulation in both serum and tumor tissue, with elevated expression associated with an inferior prognosis in HCC patients. Knockdown of lumican resulted in significantly reduced growth of HCC in vitro and in vivo. Mechanically, lumican promoted HCC malignant phenotypes by inhibiting the p53/p21 signaling pathway. Forkhead Box O3 (FOXO3) was identified as the TF of lumican that transcriptionally enhanced its expression. Without silencing FOXO3, RPG blocked the binding of FOXO3 to the promoter region of lumican, thereby inhibiting the activation of lumican/p53/p21 axis. Mice treated with RPG developed fewer and smaller HCCs than those in the control group at 24 weeks after establishment.

Conclusion

Our results indicate that RPG prevented the development and progression of HCC via alteration of FOXO3/lumican/p53 axis.
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Metadata
Title
Repaglinide restrains HCC development and progression by targeting FOXO3/lumican/p53 axis
Authors
Yifei Tan
Yongjie Zhou
Wei Zhang
Zhenru Wu
Qing Xu
Qiong Wu
Jian Yang
Tao Lv
Lvnan Yan
Hong Luo
Yujun Shi
Jiayin Yang
Publication date
07-02-2024
Publisher
Springer Netherlands
Published in
Cellular Oncology
Print ISSN: 2211-3428
Electronic ISSN: 2211-3436
DOI
https://doi.org/10.1007/s13402-024-00919-9
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