Trametenolic Acid B Triggers HSP90AA4P and Autophagyin HepG2/2.2.15 Cells by Proteomic Analysis
Ourprevious studies have demonstrated that trametenolic acid B(TAB) extracted from the Laetiporus sulphureus (Fr.) Murrill owned effective anti-proliferation of HepG2/2.215cells and induced autophagy activity. The present aim was to furtherinvestigate its mechanisms involved by proteomic analysis. The iTRAQof TAB on HepG2/2.215 was carried out and the western blot was usedto verify the results of the proteomics analysis. According to thepeptide segment quantitative standard (FDR ≤ 1%), a total of5324 proteins were identified in HepG2/2.215 by proteomic analysis.The results identified that the major up-regulated proteins were HSP90AA4P,MYB, SERPINE1, and down-regulated proteins were Rho C, SERPINA1, andPIK3R4, which were related to PI3K/Akt signaling pathway, cell metastasis,and autophagy. HSP90AA4P and Rho C’s proteomics analysis werefurther confirmed by the western blot. The proteomic results demonstratedthat the anti-hematoma effect of TAB was closely related to the increaseof HSP90AA4P protein expressions and autophagy, which may be a criticaltarget of TAB, which was expected to be a candidate drug for the treatmentliver cancer.
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