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P53 and VEGF are promising biomarkers for sorafenib efficacy in an experimental model of NASH-related HCC

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Abstract

The efficacy of systemic therapy for hepatocellular carcinoma (HCC) related to non-alcoholic steatohepatitis (NASH) is poorly understood. In this study we evaluated the effects of sorafenib based on the expression of molecular markers related to major hepatocarcinogenesis pathways and angiogenesis in a NASH-related HCC model. Forty male rats were submitted to NASH-HCC induction through the combination of a high-fat and choline deficient diet and diethylnitrosamine (100 mg/L) administration in the drinking water for 13 and 16 weeks. After the induction period, the rats received daily gavage administration of saline solution (control) or Sorafenib (5 mg/kg/day) for 3 weeks. Thereafter, the animals were euthanized and samples from liver nodules were collected for histopathological analysis and immunohistochemical assessment of HEP-PAR-1, glutamine-synthetase, VEGF, survivin, β-catenin and p53. A semi-quantitative score was used for VEGF, survivin and β-catenin analysis. For p53, the percentage of positive cells was determined. Results were processed by Wilcoxon’s test or Student’s t-test. Both protocols efficiently induced HCC, most of them being moderately to poorly differentiated. Sorafenib-treated animals showed a decreased expression of VEGF and p53 in HCCs generated at 13 weeks when compared to control animals (p = 0.03; p = 0.04, respectively). No significant difference in β-catenin and survivin were observed. There was a significant decrease in VEGF and p53 expression when comparing the two control groups (13 vs. 16 weeks, p < 0.01). p53 and VEGF are promising biomarkers for assessment of efficacy of Sorafenib, whereas survivin and β-catenin were not found useful. Decreased immunohistochemical expression of p53 and VEGF in the 16 week control group may indicate a different metabolic status of HCC.

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The material elements were described in the Materials and Methods section.

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Acknowledgements

The authors thank the Boards of the Institutions involved in the study. The abstract was presented at the European Association for the Study of the Liver’s (EASL) Liver Cancer Summit Feb 3‐Feb 4, 2022, online, and published as abstract PO-170 in LCS 2022 Abstract Book.

Funding

The author João Pedro Nassar Reis, was benefited from the Scientific Initiation Grant: PIBIC-CNPq (nº 2564/2020).

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JPNR, PFU performed immunohistochemical reactions and write the first draft of the manuscript. BC performed the statistical analysis. VAFA and ALF analysed the histological sections and the immunohistochemical evaluations. JTS, FJC AND CPM aided in the study design and discussion of the results. CPM, VAFA, BC and ALF contributed to the discussion of the results, organization and review of the manuscript. All authors read and approved the manuscript.

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Correspondence to Claudia P. Oliveira.

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Nassar-Reis, J.P., Umeta, P.F., Stefano, J.T. et al. P53 and VEGF are promising biomarkers for sorafenib efficacy in an experimental model of NASH-related HCC. J Mol Histol 54, 473–488 (2023). https://doi.org/10.1007/s10735-023-10142-9

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  • DOI: https://doi.org/10.1007/s10735-023-10142-9

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