Abstract Title:

Actinidia Chinensis Planch Root extract attenuates proliferation and metastasis of hepatocellular carcinoma by inhibiting the DLX2/TARBP2/JNK/AKT pathway.

Abstract Source:

J Ethnopharmacol. 2019 Dec 28 ;251:112529. Epub 2019 Dec 28. PMID: 31891797

Abstract Author(s):

Tingting Fang, Zhiying Zhao, Feifei Yuan, Mingyan He, Jialei Sun, Mengzhou Guo, Peixin Huang, Biwei Yang, Jinglin Xia

Article Affiliation:

Tingting Fang


ETHNOPHARMACOLOGICAL RELEVANCE: Many studies have confirmed that traditional Chinese herbs exert potential anti-tumor effects. Actinidia Chinensis Planch root has been used as a traditional Chinese medicine (TCM) for thousands of years. However, the mechanism of anti-tumor effects of Actinidia Chinensis Planch root has not been clearly clarified.

AIM OF THE STUDY: To explore the molecular biological mechanisms underlying the inhibitory effect of Actinidia Chinensis Planch root extract (acRoots) on hepatocellular carcinoma (HCC).

MATERIALS AND METHODS: In our previous study, we used mRNA chip analyses to identify genes regulated by acRoots. Further analyses of altered genes led to the identification of a key regulator of genes that responds to acRoots. We explored the effects of acRoots on the proliferation and invasion of HCC cells via cell counting as well as transwell assays, and further explored the molecular mechanisms underlying the effects of acRoots on HCC cells using qRT-PCR, western blot, and Chip-PCR.

RESULTS: Increasing the concentration of acRoots as well as prolonging its action time enhanced the inhibitory activity of acRoots as well as its cytotoxicity against HCC cells. High TARBP2 expression in HCC cells, which is associated with advanced-stage HCC and poor prognoses in HCC patients, was downregulated by treatment with acRoots. Furthermore, acRoots inhibited proliferation, invasion, and epithelial-to-mesenchymal transition by downregulating TARBP2 expression. HCC cells with higher TARBP2 expression were more sensitive to acRoots. The expression of TARBP2 and DLX2 in HCC patients and HCC cell lines was significantly positively correlated, and DLX2 as a transcription factor may promote TARBP2 expression, thereby further activating the JNK/AKT signaling pathway leading to the inhibition of HCC.

CONCLUSIONS: acRoots inhibited the malignant behavior of HCC cells by inhibiting TARBP2 expression, which is affected by the transcription factor DLX2, leading to a reduction in JNK/AKT signaling pathway activation.

Study Type : In Vitro Study

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Sayer Ji
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