Here using clinically relevant murine prostate cancer models, we investigated the significance of β-catenin activation in prostate cancer progression and treatment resistance.
Knockdown of the long noncoding RNA HOTTIP inhibits cell proliferation and enhances cell sensitivity to cisplatin by suppressing the Wnt/β-catenin pathway in prostate cancer.
Furthermore, we found that curcumin significantly upregulated the expression of miR-34a, along with the downregulated expression of β-catenin and c-myc in three prostate cancer cell lines.
To understand the role of miR-129-5p and ZIC2 in PCa, DU145 cells were transfected with mimic or inhibitor of miR-129-5p, or si-ZIC2 and the expression of Wnt, β-catenin, E-cadherin, vimentin, N-cadherin, vascular endothelial growth factor (VEGF), and CD31, as well as the extent of β-catenin phosphorylation was determined.
Since growing evidence demonstrates that WNT/β-catenin signaling plays an important role in CRPC, the antitumor activity and mechanism of action of CWP232291, a small molecule β-catenin inhibitor, were investigated in prostate cancer.
CLCA2 promoted PCa cell adhesion inhibiting epithelial-mesenchymal transition (EMT) and activating CTNNB1 together with epithelial marker (CDH1) induction, and mesenchymal markers (SNAI2 and TWIST1) repression.
The β-catenin:TCF interaction plays a critical role in the Wnt signaling pathway which is over-activated in multiple cancers, including prostate cancer.
Pharmacological inhibition of β-catenin nuclear translocation using compounds ICG001 and IWR-1 restored HLEC tight-junction integrity and inhibited prostate cancer cell transendothelial migration in vitro and lung metastasis in vivo.
Our findings establish that AMPK/GSK3β/β-catenin cascade-triggered CEMIP overexpression might promote migration and invasion in anoikis-resistant PCa cells by enhancing PDK4-associated metabolic reprogramming, which may provide a novel, promising therapeutic target for the treatment of advanced PCa.-Zhang, P., Song, Y., Sun, Y., Li, X., Chen, L., Yang, L., Xing, Y. AMPK/GSK3β/β-catenin cascade-triggered overexpression of CEMIP promotes migration and invasion in anoikis-resistant prostate cancer cells by enhancing metabolic reprogramming.
These results suggest a role for TRPM4 channels in β-catenin oncogene signaling and underlying mechanisms, highlighting this ion channel as a new potential target for future therapies in prostate cancer.
Our results reveal that suppression of Capn4 by miR-520b inhibits the growth and invasion of prostate cancer cells associated with downregulated Wnt/β-catenin signaling, indicating an important role of the miR-520b/Capn4/Wnt/β-catenin regulation axis in the molecular pathogenesis of prostate cancer.
In addition, an orthotopic prostate cancer model was established to evaluate the <i>in vivo</i> effects of the combined targeting of CSCs and their interaction with TAMs on ADT resistance.<b>Results:</b> Autophagy-related gene 7 (ATG7) facilitated the transcription of OCT4 via β-catenin, which binds to the OCT4 promoter, promoting CSC characteristics in prostate cancer, including self-renewal, tumor initiation, and drug resistance.
In conclusion, targeting clinically significant PCa with high levels of δ-catenin with anti-androgen and anti β-catenin combination therapy may prevent progression of the disease to a castration-resistant state and, thus, represents a promising therapeutic strategy.
Recent genome-wide analysis of prostate cancer metastases illustrate the importance of the Wnt/β-catenin pathway in prostate cancer and compel us to reexamine the interaction of the AR and Wnt/β-catenin signaling pathways.