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  • Title: Core Target and Key Signal Pathway of Xiaoluo in the Treatment of Thyroid Cancer.
    Author: Liang W, Zhang K, Sun Y, Chen L, Wang Z, Cheng W, Li W.
    Journal: Altern Ther Health Med; 2023 Jul; 29(5):400-409. PubMed ID: 37171951.
    Abstract:
    CONTEXT: At present, hormone therapy and surgery are the main treatments for thyroid cancer, and they have a quick effect but a high recurrence rate. Also, the side effects are significant. it's extremely urgent to explore treatments that can take into account both therapeutic benefits and side effects. OBJECTIVE: The study intended to explore whether Xiaoluo has an inhibitory effect on the proliferation of thyroid-cancer cells in vitro and to examine the core target and key signaling pathway of Xiaoluo in the treatment of thyroid cancer, using the thyroid-cancer cell line SW579. DESIGN: The research team performed an in-vitro study. SETTING: The study took place at the College of Pharmacy at Harbin University of Commerce in Harbin, China. OUTCOME MEASURES: The research team used a Western blot analysis to detect the expression of apoptosis proteins-B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), and Caspase-3-and the activity related to the signaling pathways phosphoinositide 3-kinase (PI3K)/ protein kinase B (AKT)/ mammalian target of rapamycin 1 (mTORC1). The team measured optical densities and inhibition rates for the 1, 2, 5, 10, and 15 mg/mL Xiaokuo groups and for a negative control group. The research team measured apoptosis, expression of Bcl-2, Bax, and Caspase-3, and expression of P13K, AKT, and mTor for the 10 μmol/L LY294002, 10 mg/mL Xiaoluo, 100 ng/mL IGF-1, and 100 ng/mL IGF-1+10 mg/mL Xiaoluo groups and for the blank control group. RESULTS: The inhibition of SW579 cell proliferation increased with each increase in the Xiaoluo concentration from 1-15 mg/mL, and the inhibition rate reached 49.63% when the concentration was 15 mg/ml. The Xiaoluo group's late and total apoptosis rates were significantly higher (both P < .01) than those of the blank control group. The Xiaoluo group's expression of the Bcl-2 protein was significantly lower (P < .05), and its expressions of Bax and Caspase-3 were significantly higher (both P < .01) than those of the blank control group. The Xiaoluo group's expressions of P-PI3K, P-Akt, and P-MTOR were significantly lower than those of the blank group (all P < .01). These findings were comparable to those that occurred with use of the PI3K/AKT/mTORC1 signaling pathway inhibitor LY294002. CONCLUSIONS: Xiaoluo exerts its antithyroid-cancer effects through the induction of apoptosis in thyroid cancer cells through the inhibition of the PI3K/AKT/mTORC1 signaling pathway. Xiaoluo may serve as a potential therapeutic agent for the treatment of thyroid cancer.
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