Abstract
To evaluate the inhibitory effect of bear bile powder (BBP) on hepatocellular carcinoma (HCC) growth in vivo and investigate the underlying mechanisms. A HCC xenograft mouse model was developed by producing with huh7 cells. After 5 days following xenograft implantation, ten HCC xenograft mice were given intra-gastric administration with 10 mg/(kg•d) dose of BBP or saline for 3 weeks. Tumor growth in HCC xenograft mice was evaluated by measuring the tumor weight and volume. Cell apoptosis, proliferation or tumor angiogenesis were examined via immunohistochemical (IHC) staining for transferase-mediated deoxyuridine triphosphate-biotin nick end labeling (TUNEL), proliferating cell nuclear antigen (PCNA) or cluster of differentiation 31 (CD31), respectively. Phosphorylation of signal transducer and activator of transcription 3 (STAT3) were determined by Western blot. The mRNA and protein expressions of Bcl-2, Bax, Cyclin D1 and Cyclin-dependent kinase 4 (CDK4) in HCC tumor tissues were respectively determined by reverse transcription polymerase chain reaction (RT-PCR) and Western blot. The protein expression of vascular endothelial growth factor A (VEGF-A) in tumor tissues was examined by IHC staining. BBP treatment led to a signif...Continue Reading
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