Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/ijms22105284
Keywords
perilipin 5; non-alcoholic liver disease; fatty liver; hepatocellular carcinoma; cancer
Funding
- START-Program of the Faculty of Medicine of the RWTH Aachen University
- Stiftung fur Krebsforschung [2020.002.1]
- German Research Foundation [WE2554/13-1, W2554/15-1]
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Consuming high-calorie foods, like diets rich in fats, is a significant factor in the development of steatohepatitis, leading to deregulation in cells and the progression of liver diseases such as NAFLD, ultimately culminating in HCC. Understanding the link between NAFLD and HCC progression, differentiation of each stage, and the underlying mechanisms is crucial for developing new treatments and therapeutic targets.
Consumption of high-calorie foods, such as diets rich in fats, is an important factor leading to the development of steatohepatitis. Several studies have suggested how lipid accumulation creates a lipotoxic microenvironment for cells, leading cells to deregulate their transcriptional and translational activity. This deregulation induces the development of liver diseases such as non-alcoholic fatty liver disease (NAFLD) and subsequently also the appearance of hepatocellular carcinoma (HCC) which is one of the deadliest types of cancers worldwide. Understanding its pathology and studying new biomarkers with better specificity in predicting disease prognosis can help in the personalized treatment of the disease. In this setting, understanding the link between NAFLD and HCC progression, the differentiation of each stage in between as well as the mechanisms underlying this process, are vital for development of new treatments and in exploring new therapeutic targets. Perilipins are a family of five closely related proteins expressed on the surface of lipid droplets (LD) in several tissues acting in several pathways involved in lipid metabolism. Recent studies have shown that Plin5 depletion acts protectively in the pathogenesis of liver injury underpinning the importance of pathways associated with PLIN5. PLIN5 expression is involved in pro-inflammatory cytokine regulation and mitochondrial damage, as well as endoplasmic reticulum (ER) stress, making it critical target of the NAFLD-HCC studies. The aim of this review is to dissect the recent findings and functions of PLIN5 in lipid metabolism, metabolic disorders, and NAFLD as well as the progression of NAFLD to HCC.
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