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Lipid droplets and their interactions with other organelles in liver diseases

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PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biocel.2021.105937

关键词

Lipid droplet; Organelle; Interaction; Liver disease

资金

  1. China Scholarship Council [201708530248, 201606240079, 201708530234]

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Lipid droplets are cellular organelles used for lipid storage, existing as giant organelles in fat tissue and as small structures in hepatocytes, playing key roles in liver health and disease. They are involved in lipid metabolism, cell signaling, and interact with other organelles to regulate cellular biology.
Lipid droplets are cellular organelles used for lipid storage with a hydrophobic core of neutral lipids enclosed by a phospholipid monolayer. Besides presenting as giant single organelles in fat tissue, lipid droplets are also widely present as a multitude of small structures in hepatocytes, where they play key roles in health and disease of the liver. In addition to lipid storage, lipid droplets are also directly involved in lipid metabolism, membrane biosynthesis, cell signaling, inflammation, pathogen-host interaction and cancer development. In addition, they interact with other cellular organelles to regulate cellular biology. It is fair to say that the exact functions of lipid droplets in cellular physiology remain largely obscure. Thus prompted, here we aim to analyze the corpus of contemporary biomedical literature to create a framework as to how the role of lipid droplets in hepatocyte physiology and pathophysiology should be understood. The resulting framework should help understanding the interaction of lipid droplets with other organelles in important liver diseases, including fatty liver disease, viral hepatitis and liver cancer and direct further research directions.

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