English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Naphthohydroquinone dimers isolated from  Rubia  plants have garnered more attention due to their distinctive chemical structures and intriguing bioactivities. In our previous studies, we obtained ten naphthohydroquinone dimers containing seven novel ones and found that most of them possessed anti-tumor activities, especially rubioncolin C. However, the underlying mechanism remains unknown. In this study, we focused on rubioncolin C and found that it could inhibit the growth of cancer cell lines with IC 50  values between 1.14 and 9.93 μM. Further experiments demonstrated that rubioncolin C induced apoptotic and autophagic cell death and inhibited the Akt/mTOR/P70S6K signaling pathway in HCT116 and HepG2 cells. Moreover, we observed that rubioncolin C inhibited the TNF-α- and LPS-induced NF-κB activation upstream of the p65 protein, which contributed to rubioncolin C-induced cell death. Rubioncolin C could also prevent LPS-induced endotoxin shock in vivo. Moreover, rubioncolin C suppressed tumor growth through inducing apoptosis and autophagy and inactivating NF-κB in vivo. These findings clarify the anti-tumor mechanism of rubioncolin C using biochemical techniques and pharmacological models and might contribute to the future development of rubioncolin C as a new therapeutic agent for treating cancer.

cells

Natural Naphthohydroquinone Dimer Rubioncolin C Exerts Anti-Tumor Activity by Inducing Apoptotic and Autophagic Cell Death and Inhibiting the NF-κB and Akt/mTOR/P70S6K Pathway in Human Cancer Cells