Small Molecule Pin1 Inhibitor Blocking NF-κB Signaling in Prostate Cancer Cells.
Ke-Jia WuHai-Jing ZhongGuanjun YangChun WuJie-Min HuangGuodong LiDik-Lung MaChung-Hang LeungPublished in: Chemistry, an Asian journal (2018)
Prolyl-isomerase 1 (Pin1) is a conserved enzyme that regulates cell processes such as cell cycle progression, transcriptional regulation, and apoptosis. However, overexpression of Pin1 is correlated with a higher probability of prostate tumor recurrence. We utilized a molecular docking technique to identify Pin1 inhibitors from a database of natural product and natural product-like compounds. The action of the hit compounds against Pin1 activity was studied using multiple methods, including a fluorometric enzymatic assay, co-immunoprecipitation, western blotting, cell thermal shiftm, and other techniques. We have identified compound 1 as a natural-product-like inhibitor of Pin1 activity via structure-based virtual screening and showed that compound 1 could target Pin1 and disrupt the interaction between Pin1 and the p65 subunit of NF-κB in cells. Furthermore, compound 1 reduced nuclear p65 (Thr254) phosphorylation and attenuated NF-κB activity in cells. Finally, compound 1 induced apoptosis in prostate cancer cells. Compound 1 represents a natural product-like Pin1 inhibitor that acts via targeting the Pin1-NF-κB interaction.
Keyphrases
- induced apoptosis
- signaling pathway
- oxidative stress
- endoplasmic reticulum stress
- cell cycle
- cell cycle arrest
- small molecule
- molecular docking
- pi k akt
- lps induced
- cell proliferation
- prostate cancer
- single cell
- nuclear factor
- emergency department
- transcription factor
- molecular dynamics simulations
- bone marrow
- inflammatory response
- immune response
- mesenchymal stem cells
- toll like receptor
- free survival
- protein kinase