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Curcuminoids Modulated the IL-6/JAK/STAT3 Signaling Pathway in LoVo and HT-29 Colorectal Cancer Cells


Qian Li, Yanting Ding, Ying Ou, Manjing Li, Ponsiree Jithavech, Visarut Buranasudja, Boonchoo Sritularak, yichun xu*, Pornchai Rojsitthisak and Junsong Han   Pages 1 - 10 ( 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 are 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


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