ReferenceID 5505
Shikonin suppresses colon cancer cell growth and exerts synergistic effects by regulating ADAM17 and the IL‑6/STAT3 signaling pathway
Int J Oncol
Signal transducer and activator of transcription 3 (STAT3) activation is associated with drug resistance induced by anti-epidermal growth factor receptor (anti-EGFR) therapy in the treatment of colon cancer. Thus, the co
Relationship Network
Interactive first-hop connections across herbs, ingredients, formulas, targets, diseases, symptoms, syndromes, evidence, and monographs.
Click a node to open it in a new tab
Ingredient: 1Reference: 1Links: 1
Arranging relationship network...
Record Fields
Scalar fields from the final reference record.
- Reference Id
- 5505
- Evidence Id
- 22095
- Core Evidence Id
- 22095
- Source Reference Id
- 4254
- Herb2 Reference Id
- HBREF005051
- Subject Paper Key
- HBIN030442_34726248
- Pubmed Id
- 34726248
- Doi
- 10.3892/ijo.2021.5279
- Paper Title
- Shikonin suppresses colon cancer cell growth and exerts synergistic effects by regulating ADAM17 and the IL‑6/STAT3 signaling pathway
- Paper Abstract
- Signal transducer and activator of transcription 3 (STAT3) activation is associated with drug resistance induced by anti-epidermal growth factor receptor (anti-EGFR) therapy in the treatment of colon cancer. Thus, the combined inhibition of EGFR and STAT3 may prove beneficial for this type of cancer. STAT3 has been proven to play a critical role in colon cancer initiation and progression, and is considered the primary downstream effector driven by interleukin-6 (IL-6). A disintegrin and metalloproteinase 17 (ADAM17), documented as an oncogene, catalyzes the cleavage of both EGF and IL-6R, inducing EGFR signaling and enabling IL-6 trans-signaling to activate STAT3 in a wide range of cell types to promote inflammation and cancer development. As a natural product, shikonin (SKN) has been found to function as an antitumor agent; however, its role in the regulation of ADAM17 and IL-6/STAT3 signaling in colon cancer cells remains unknown. In the present study, it was found that SKN inhibited colon cancer cell growth, suppressed both constitutive and IL-6-induced STAT3 phosphorylation, and downregulated the expression of ADAM17. ADAM17 expression was not altered in response to STAT3 knockdown, while IL-6-induced STAT3 activation did not induce ADAM17 transcripts. Furthermore, it was demonstrated that SKN did not affect the expression of key proteins involved in the maturation and degradation of ADAM17. SKN decreased ADAM17 expression possibly through reactive oxygen species (ROS)-mediated translational inhibition, as evidenced by the increased ADAM17 mRNA and phosphorylation levels of eukaryotic initiation factor 2alpha (eIF2alpha). The expression of ADAM17 and p-eIF2alpha was reversed by N-acetylcysteine (NAC, a ROS scavenger). Taken together, these results indicate that the concurrent inhibition of ADAM17 and IL-6/STAT3 signaling by SKN may synergistically contribute to the suppression of colon cancer cell growth.
- Journal
- Int J Oncol
- Publish Year
- 2021
- Experiment Subject
- Experiment Type
- Cell Experiment
- Phenotype Related
- Colon Cancer; Cancer
- Paper Title Cn
- Paper Title En
- Shikonin suppresses colon cancer cell growth and exerts synergistic effects by regulating ADAM17 and the IL‑6/STAT3 signaling pathway
- Bilingual Status
- semi_complete