Qian Li, Yanting Ding, Ying Ou, Manjing Li, Ponsiree Jithavech, Visarut Buranasudja, Boonchoo Sritularak, Yichun Xu*, Pornchai Rojsitthisak* and Junsong Han* Pages 2867 - 2876 ( 10 )
Background: Curcuminoids, including curcumin, desmethoxycurcumin, and bisdesmethoxycurcumin, are natural polyphenolic compounds that exhibit various biological properties, such as antioxidant, anti-inflammatory, and anticancer activities. Dysregulation of the interleukin (IL)-6-mediated Janus kinase/signal transducer and activator of transcription 3 (JAK/STAT3) signaling pathway is closely associated with the development of colorectal cancer (CRC).
Methods: Here, we have evaluated the modulation of the IL-6/JAK/STAT3 pathway of curcumin, desmethoxycurcumin, and bisdesmethoxycurcumin in LoVo and HT-29 colorectal cancer cells with a single molecular array (Simoa), western blot analysis, real-time polymerase chain reaction (PCR), and pathway analysis system.
Results: The study showed that curcuminoids suppressed the amount of IL-6 in LoVo and HT-29 colorectal cancer cells. Meanwhile, curcuminoids inhibited the expression of inflammation regulator-related microRNA (miRNA). We also found that the expression of total STAT3 was downregulated by curcuminoids. Moreover, the pathway analysis system showed that curcuminoids inactivated the JAK/STAT3 signaling pathway. Taken together, we demonstrated that the anti-cancer activities of curcuminoids against colorectal cancer are due to the modulation of the IL-6/JAK/STAT3 cascade.
Conclusion: Curcuminoids could be a promising anti-cancer agent for the treatment of human colorectal cancer.
Curcumin, desmethoxycurcumin, bisdesmethoxycurcumin, colorectal cancer, JAK/STAT3, colorectal cancer cells.