Introduction

Liver cancer is the sixth most prevalent cancer (4.3% of all cancer sites) and the third leading cause of cancer-related mortality (7.8% of all cancer sites) worldwide, according to Global Cancer Statistics 2022 [1,2,3]. Hepatocellular carcinoma (HCC) accounts for 75–85% of liver cancer cases. The incidence of liver cancer shows notable geographical variations, with East Asia and Sub-Saharan Africa experiencing the highest rates, largely due to the varying prevalence of risk factors such as hepatitis B virus (HBV) and hepatitis C virus (HCV) infections, aflatoxin exposure, chronic alcohol use, and non-alcoholic fatty liver disease (NAFLD) [4,5,6,7]. Recent strides in molecular biology have shed light on the complex interplay of genetic, epigenetic, and environmental factors in liver cancer pathogenesis [8,9,10,Full size image

Table 1 Effects and regulatory mechanisms of post-translational modifications in the carcinogenesis of liver cancer

This review aims to highlight the critical role of PTMs in the pathogenesis and progression of liver cancer, emphasizing the most extensively explored PTMs, mainly including phosphorylation, acetylation, methylation, and glycosylation. By dissecting the intricate mechanisms through which PTMs influence key cellular processes in liver cancer, the paper seeks to elucidate their potential as therapeutic targets, discuss the challenges in targeting these modifications, and explore promising research directions (Table 2). Ultimately, this review aims to improve diagnostic accuracy, prognostic prediction, and the personalization of treatment strategies for liver cancer by leveraging the insights gained from the study of PTMs in HCC pathogenesis.

Table 2 Clinical significance of post-translational modifications in liver cancer