Electronic Journal of Liver Tumor ›› 2023, Vol. 10 ›› Issue (2): 16-26.

• Original article • Previous Articles     Next Articles

Involvement of microRNA-551a in the response mechanism of sorafenib in patients with advanced hepatocellular carcinoma

Bian Tao1, Qin Feng2, Wang Shengjie2, Wang Hui3, Han Shanshan4,*   

  1. 1. Department of Clinical Pharmacy, Affiliated Hospital of Wanxi Health Vocational College, Lu'an 237010, Anhui, China;
    2. Department of Hepatobiliary Surgery, Affiliated Hospital of Wanxi Health Vocational College, Lu'an 237010, Anhui, China;
    3. Department of Nursing, Affiliated Hospital of Wanxi Health Vocational College, Lu'an 237010, Anhui, China;
    4. Department of General Surgery, Beijing Dawang Road Emergency Rescue Hospital, Beijing 100020, China
  • Received:2023-02-02 Online:2023-06-30 Published:2023-08-14

Abstract: Objective: Sorafenib is one of the standard first-line therapies for patients with advanced hepatocellular carcinoma (HCC) disease. This study aimed to explore the role of microRNAs (miRNAs) in sorafenib response mechanisms.
Method: HCC-related miRNAs expression profiles were analyzed, and a comprehensive bioinformatics approach identified sorafenib response miRNAs and their associated molecular mechanisms. A total of 24 patients with advanced HCC admitted to our hospital for treatment between February 2021 and February 2022 were selected. During the same period, 18 patients with cirrhosis admitted for treatment were selected as the control group. To verify the expression characteristics and prognostic value of sorafenib-responsive miRNAs.
Result: HCC patients with high miRNA-551a expression had a poorer prognosis, and expression was suppressed by sorafenib, which is involved in HCC progression and sorafenib response mechanisms through multiple pro-oncogenic pathways and autophagic pathways. In the clinical validation cohort, serum miRNA-551a expression was higher in advanced HCC patients before sorafenib treatment than in controls (P<0.05) and decreased after treatment (P<0.05). Patients with advanced HCC with high pre-treatment serum miRNA-551a expression benefited from sorafenib treatment (P<0.05). Univariate and multivariate Cox proportional regression models also confirmed that pre-treatment serum miRNA-551a levels could predict the prognosis of advanced HCC patients treated with sorafenib independently of clinicopathological features (P<0.05). Molecular docking and kinetic modeling confirmed that sorafenib directly binds pre-miRNA-551a and prevents cleavage of pre-miRNA-551a from maturing miRNA-551a by the endoribonuclease Dicer. The Nomogram model based on the combination of miRNA-551a expression characteristics and clinicopathological features effectively predicted the prognosis of HCC patients at survival rates at 1-, 3- and 5- years and, ideally, screening of sorafenib-responsive patients.
Conclusion: miRNA-551a, as a pro-oncogene, can be suppressed by sorafenib expression involved in its response mechanism. The assessment and targeting of miRNA-551a expression characteristics can help personalize the treatment of HCC patients.

Key words: Advanced hepatocellular carcinoma, Sorafenib, microRNA, Response, Prognosis