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1.重庆医科大学感染性疾病分子生物学教育部重点实验室,重庆 400016
2.重庆市江北区中医院检验科,重庆 400016
3.重庆医科大学第一附属医院医学检验科,重庆 400016
成子怡,Email:chengziyi1020@163.com,研究方向:肝脏疾病。
夏 杰,Email:xiajie@cqmu.edu.cn。
收稿:2025-09-16,
修回:2025-10-19,
录用:2025-12-15,
纸质出版:2026-03-28
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成子怡,陈蕴梦,潘敏刚,等.蛋白激酶C-β抑制肝癌细胞增殖的作用及机制研究[J].重庆医科大学学报,2026,51(3):345-352.
Cheng Ziyi,Chen Yunmeng,Pan Mingang,et al.Role and mechanism of protein kinase C-β in inhibiting the proliferation of hepatocellular carcinoma cells[J].Journal of Chongqing Medical University,2026,51(3):345-352.
成子怡,陈蕴梦,潘敏刚,等.蛋白激酶C-β抑制肝癌细胞增殖的作用及机制研究[J].重庆医科大学学报,2026,51(3):345-352. DOI: 10.13406/j.cnki.cyxb.004020.
Cheng Ziyi,Chen Yunmeng,Pan Mingang,et al.Role and mechanism of protein kinase C-β in inhibiting the proliferation of hepatocellular carcinoma cells[J].Journal of Chongqing Medical University,2026,51(3):345-352. DOI: 10.13406/j.cnki.cyxb.004020.
目的
2
探究蛋白激酶C-β(protein kinase C-β,PRKCB/PKC-β)在肝细胞癌(hepatocellular carcinoma,HCC)中的潜在作用,揭示HCC发生发展的可能分子机制。
方法
2
整合TCGA、GEO数据库的肝癌相关数据,分析PRKCB在HCC中的表达水平与临床预后的关联。在HCC细胞系中通过过表达及沉默PRKCB,结合细胞增殖实验、克隆形成实验,明确其对HCC增殖能力的影响。利用蛋白质印迹实验检测HCC临床样本中肿瘤组织与癌旁组织的PRKCB表达水平及PRKCB影响HCC细胞增殖的分子机制。
结果
2
PRKCB在肝癌细胞系中低表达(
P
<
0.05)并与患者的预后不良相关(
P
<
0.05)。过表达PRKCB抑制HCC的增殖、沉默PRKCB则使HCC增殖能力增加(
P
<
0.05)。PRKCB表达改变导致ERK、p38、JNK磷酸化水平随之明显改变,进而影响HCC发生发展。
结论
2
PRKCB可抑制HCC的增殖能力,该作用可能通过调控ERK1/2、p38、JNK磷酸化水平相关的MAPK信号通路进行信号传递。
Objective
2
To investigate the potential role of protein kinase C-β(PRKCB/PKC-β) in hepatocellular carcinoma(HCC) and reveal the possible molecular mechanisms underlying the occurrence and development of HCC.
Methods
2
Liver cancer-related data from the TCGA and GEO databases were integrated to analyze the correlation between PRKCB expression and clinical prognosis in HCC. In HCC cell lines,PRKCB was overexpressed or silenced,and its impact on HCC proliferation was assessed using cell proliferation and colony formation assays. Western blotting was used to detect PRKCB expression levels in tumor tissues and adjacent non-tumor tissues from clinical HCC samples,and to investigate the molecular mechanism by which PRKCB affects HCC cell proliferation.
Results
2
PRKCB expression was low in HCC cell lines(
P
<
0.05) and its low expression wa
s associated with poor patient prognosis(
P
<
0.05). Overexpression of PRKCB inhibited HCC proliferation,whereas silencing PRKCB increased the proliferative capacity of HCC cells(
P
<
0.05). Altered PRKCB expression led to significant changes in the phosphorylation levels of ERK,p38,and JNK,thereby affecting the occurrence and development of HCC.
Conclusion
2
PRKCB can inhibit the proliferative capacity of HCC. This effect may be mediated by regulating the MAPK signaling pathway related to the phosphorylation levels of ERK1/2,p38,and JNK.
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