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Updated: Feb 16, 2026

Quantitative PCR-based Assay to Measure Sonic Hedgehog Signaling in Cellular Model of Ciliogenesis
Published on: January 31, 2025
Genipin suppresses colorectal cancer cells by inhibiting the Sonic Hedgehog pathway
Bo Ram Kim1, Yoon A Jeong1, Yoo Jin Na2
1Department of Oncology, Korea University Guro Hospital, Seoul, Republic of Korea.
Abstract:
Genipin, a major component of Gardenia jasminoides Ellis fruit, has been shown to inhibit the growth of gastric, prostate, and breast cancers. However, the anti-proliferative activity of genipin in colorectal cancer (CRC) has not been characterized. Herein, we demonstrated that genipin inhibits the proliferation of CRC cells and that genipin suppressed the Hedgehog pathway. Further investigation showed that p53 and NOXA protein levels were increased during inhibition of Hedgehog pathway-mediated apoptosis in CRC cells. We also showed that p53 modulated the expression of NOXA during genipin-induced apoptosis, and suppression via SMO also played a role in this process. Subsequently, GLI1 was ubiquitinated by the E3 ligase PCAF. In a xenograft tumor model, genipin suppressed tumor growth, which was also associated with Hedgehog inactivation. Taken together, these results suggest that genipin induces apoptosis through the Hedgehog signaling pathway by suppressing p53. These findings reveal a novel regulatory mechanism involving Hedgehog/p53/NOXA signaling in the modulation of CRC cell apoptosis and tumor-forming defects.
Insights
Genipin, derived from Gardenia jasminoides, inhibits colorectal cancer (CRC) cell growth by suppressing the Hedgehog pathway. This natural compound induces apoptosis via the Hedgehog/p53/NOXA signaling pathway, offering a novel therapeutic strategy for CRC.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Genipin, from Gardenia jasminoides, shows anti-cancer properties in various cancers.
- Its effect on colorectal cancer (CRC) proliferation and underlying mechanisms remain uncharacterized.
Purpose of the Study:
- To investigate the anti-proliferative effects of genipin on colorectal cancer (CRC) cells.
- To elucidate the molecular mechanisms, particularly the role of the Hedgehog signaling pathway, in genipin-induced apoptosis in CRC.
Main Methods:
- Cell proliferation assays were performed on CRC cells treated with genipin.
- Western blotting and ubiquitination assays were used to analyze protein levels and interactions.
- A xenograft tumor model was employed to assess genipin's in vivo efficacy.
Main Results:
- Genipin significantly inhibited CRC cell proliferation and suppressed the Hedgehog signaling pathway.
- Genipin treatment led to increased p53 and NOXA protein levels, mediating apoptosis.
- In vivo studies confirmed that genipin suppressed tumor growth by inactivating the Hedgehog pathway.
Conclusions:
- Genipin induces apoptosis in colorectal cancer cells through the Hedgehog/p53/NOXA signaling pathway.
- This study reveals a novel mechanism for genipin's anti-cancer activity, highlighting its potential therapeutic value for CRC.
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