Title:Knockdown of LRCH4 Remodels Tumor Microenvironment Through
Inhibiting YAP and TGF-β/Smad Signaling Pathway in Colorectal Cancer
Volume: 27
Issue: 12
Author(s): Zhiwen Li, Zhenhua Cui, Xianren Wang and Yanfeng Lv*
Affiliation:
- The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
Keywords:
Colorectal cancer, prognosis, tumor microenvironment, YAP, epithelial mesenchymal transformation, calponin homology (CH).
Abstract:
Background: Colorectal cancer is one of the most common gastrointestinal malignancies
worldwide. LRCH4 is the top 1 gene associated with an unfavorable prognosis in colorectal
cancer.
Methods: Here, we reported that the knockdown of LRCH4 inhibited the proliferation, migration
and invasion in HT29 cells.
Results: The activity of Yes-Associated Protein (YAP), a transcription factor in the Hppo-YAP
signaling pathway, was significantly inhibited by LRCH4-siRNA. LRCH4 knockdown also reversed
the EMT and regulated the expression of extracellular matrix (ECM) protein, Fibronectin
and Collagen IV in HT29 cells. In addition, the TGF-β/Smad signaling pathway, as the downstream
pathway of Yap, was also inhibited by LRCH4 knockdown.
Conclusion: Knockdown of LRCH4 involved in the regulation of ECM and EMT and inhibited YAP
and the TGF-β/Smad signaling pathway in colorectal cancer cells. Our study provided a mechanism
of LRCH4 on colorectal cancer cells, and a new potential target for clinical tumor treatment.