4.7 Article

Lamin B1 is a potential therapeutic target and prognostic biomarker for hepatocellular carcinoma

期刊

BIOENGINEERED
卷 13, 期 4, 页码 9211-9231

出版社

TAYLOR & FRANCIS INC
DOI: 10.1080/21655979.2022.2057896

关键词

Hepatocellular carcinoma; LMNB1; therapeutic target; prognostic biomarker; nomogram

资金

  1. Natural Science Foundation of Guangdong Province [NSF-GP 2016A030313555]

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LMNB1 is overexpressed in hepatocellular carcinoma (HCC) and is associated with poor prognosis. It promotes cell proliferation and metastasis in HCC through the regulation of the PI3K and MAPK pathways. Incorporating LMNB1 into a predictive nomogram improves accuracy, suggesting that it might serve as a therapeutic target and prognostic biomarker for HCC.
Hepatocellular carcinoma (HCC) is an aggressive malignancy. Previous studies have found that lamin B1 (LMNB1) contributes to the development of human cancers. However, the biological functions and prognostic values of LMNB1 in HCC have not been adequately elucidated. In our present research, the expression pattern of LMNB1 was analyzed. The prognostic values of LMNB1 were evaluated by Kaplan-Meier survival analysis and Cox proportional hazards regression analysis. The effects of LMNB1 on HCC progression were assessed by Cell Counting Kit-8 (CCK-8), colony formation, wound healing, Transwell and in vivo xenograft assays. The mechanisms of LMNB1 in HCC progression were elucidated by gene set enrichment analysis (GSEA) and loss-of-function assays. Besides, a nomogram for predicting overall survival (OS) was constructed. The results demonstrated that LMNB1 was overexpressed in HCC and that increased LMNB1 expression predicted a dismal prognosis. Further experiments showed that LMNB1 facilitated cell proliferation and metastasis in HCC. Functional enrichment analysis revealed that LMNB1 modulated metastasis-associated biological functions such as focal adhesion, extracellular matrix, cell junctions and cell adhesion. Mechanistically, we revealed that LMNB1 promoted HCC progression by regulating the phosphatidylinositol 3-kinase (PI3K) and mitogen-activated protein kinase (MAPK) pathways. Moreover, incorporating LMNB1, Ki67 and Barcelona Clinic Liver Cancer (BCLC) stage into a nomogram showed better predictive accuracy than the Tumor-Node-Metastasis (TNM) stage and BCLC stage. In conclusion, LMNB1 may serve as an effective therapeutic target as well as a reliable prognostic biomarker for HCC.

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