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Lysosome-Related Genes and RNF19B as Prognostic Markers for Survival and Immunotherapy Efficacy in Hepatocellular Carcinoma.
Clinical and Translational Gastroenterology 2024 March 29
BACKGROUND: Hepatocellular carcinoma (HCC) poses a considerable worldwide health concern due to its associated high risk of death. The heterogeneity of HCC poses challenges in developing practical risk stratification tools and identifying prognostic markers for personalized targeted treatments. Recently, lysosomes were shown to be crucial contributors to numerous cellular activities, including tumor initiation and regulating immune responses. Here, we aimed to construct a reliable prognostic signature based on lysosome-related genes and determine its association with the immune microenvironment.
METHODS: We comprehensively analyzed lysosome-related genes in HCC to investigate their influence on patient survival and the tumor immune microenvironment. A prognostic signature comprising 14 genes associated with lysosomes was created to estimate the survival outcomes of individuals with HCC. Additionally, we verified the prognostic importance of Ring Finger Protein 19B (RNF19B) in HCC patients through multiplex immunohistochemistry analysis.
RESULTS: Our constructed lysosome-related prediction model could significantly discriminate between HCC patients with good and poor survival outcomes (P < 0.05). We also found that elevated RNF19B expression was linked to unfavorable prognostic outcomes and showed a connection with specific clinicopathological characteristics. Moreover, it was observed that RNF19B could facilitate the transformation of macrophages into M2-polarized macrophages and showed a significant positive correlation with PD-1 and CTLA-4.
CONCLUSION: In summary, our study proposes that the expression of lysosome-related genes is associated with the immune microenvironment, serving as a predictor for HCC patients' survival. Meanwhile, RNF19B was identified as a novel prognostic marker for predicting OS and immunotherapy effects in HCC patients.
METHODS: We comprehensively analyzed lysosome-related genes in HCC to investigate their influence on patient survival and the tumor immune microenvironment. A prognostic signature comprising 14 genes associated with lysosomes was created to estimate the survival outcomes of individuals with HCC. Additionally, we verified the prognostic importance of Ring Finger Protein 19B (RNF19B) in HCC patients through multiplex immunohistochemistry analysis.
RESULTS: Our constructed lysosome-related prediction model could significantly discriminate between HCC patients with good and poor survival outcomes (P < 0.05). We also found that elevated RNF19B expression was linked to unfavorable prognostic outcomes and showed a connection with specific clinicopathological characteristics. Moreover, it was observed that RNF19B could facilitate the transformation of macrophages into M2-polarized macrophages and showed a significant positive correlation with PD-1 and CTLA-4.
CONCLUSION: In summary, our study proposes that the expression of lysosome-related genes is associated with the immune microenvironment, serving as a predictor for HCC patients' survival. Meanwhile, RNF19B was identified as a novel prognostic marker for predicting OS and immunotherapy effects in HCC patients.
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