Objective: To analyze guanine nucleotide-binding protein subunit beta-2-like 1 (GNB2L1) expression based on bioinformatics, so as to evaluate its role and its relationship with survival rate during the occurrence and development of hepatocellular carcinoma. Methods: GEPIA, UALCAN and HPA databases were used to analyze the expression level of GNB2L1 and its relationship with HCC survival rate. Mutations in the GNB2L1 gene and their impact on survival were analyzed using the cBioPortal database. LinkedOmics database was used to analyze GNB2L1-related genes in HCC. Gene Ontology (GO) functional annotation and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis were performed simultaneously. STEING database was used to construct the GNB2L1 protein interaction network. TIMER database was used to analyze the relationship between GNB2L1 gene expression and immune infiltration in hepatocellular carcinoma. Differential expression of GNB2L1 in plasma platelets of HCC patients and healthy controls was analyzed using mRNA-based sequencing technology. Data between groups were compared using an independent-samples t-test. Results: GNB2L1 expression level was significantly increased in HCC tissues (P<0.05), and its expression was significantly correlated with body weight, classification and stage (P<0.05). The overall survival rate was higher in GNB2L1 low expression group (P<0.001). GNB2L1 and its related genes were related to biological process regulation, metabolic process, protein binding, oxidative phosphorylation, JAK-STAT signaling pathway, Ras signaling pathway and so on. GNB2L1 had interaction with RPS12, RPS11 and RPL19, and participated in multiple biological processes such as liver regeneration and positive regulation of endogenous apoptotic signaling pathway. GNB2L1 expression was significantly positively correlated with the infiltration degree of various immune cells in HCC (P<0.05). Cox regression analysis showed that GNB2L1 was an independent risk factor for lower survival rate in patients with HCC [Hazard ratio (95% confidence interval)=1.456 (1.034~2.051), P=0.031]. GNB2L1expression levels were significantly higher in platelets of HCC patients than that of healthy controls (10.40±1.36 vs. 9.58±0.51, t=2.194, P=0.037). Conclusion: GNB2L1 has high expression and close relationship to survival rate in HCC. Therefore, GNB2L1 may be a potential biomarker of HCC.
目的： 基于生物信息学数据库分析G蛋白β2亚基类似物1（GNB2L1）基因在肝癌中的表达情况，评估其在肝癌发生、发展中的作用及其与生存率的关系。 方法： 基于GEPIA、UALCAN和HPA数据库分析GNB2L1在肝癌中的表达水平以及其与生存率的关系；cBioPortal数据库分析GNB2L1基因的突变情况及其对生存率的影响；LinkedOmics数据库分析GNB2L1在肝癌中的相关基因，同时进行基因本体论（GO）功能注释、京都基因与基因组百科全书通路富集分析；STRING数据库构建GNB2L1蛋白相互作用网络；TIMER数据库分析GNB2L1基因表达与肝癌免疫浸润的关系。基于mRNA测序技术分析肝癌患者和健康对照血浆血小板中GNB2L1表达的差异。组间数据比较采用独立样本t检验。 结果： GNB2L1在肝癌组织中表达水平显著升高（P<0.05），其表达与体质量、肝癌分级和分期之间均存在显著相关性（P值均<0.05）；GNB2L1低表达组的总体生存率更高（P<0.001）。GNB2L1及其相关基因可能与生物过程调节、代谢过程、蛋白结合、氧化磷酸化、JAK-STAT信号通路、Ras信号通路等相关。GNB2L1与核糖体蛋白S12、S11、L19等存在相互作用，参与了肝脏再生、内源性凋亡信号通路的正性调控等多个生物学过程。GNB2L1表达水平与肝癌中多种免疫细胞的浸润程度均有正相关（P值均<0.05），Cox回归分析结果显示GNB2L1是肝癌患者较低生存率的独立危险因素［风险比值比（95%可信区间）为1.456（1.034～2.051），P=0.031］。肝癌患者血小板中GNB2L1的表达水平显著高于健康对照组（10.40±1.36与9.58±0.51，t=2.194，P=0.037）。 结论： GNB2L1在肝癌中高表达且与生存率密切相关，GNB2L1可能是肝癌的潜在生物标志物。.