Recent discoveries on absorption of dietary fat: Presence, synthesis, and metabolism of cytoplasmic lipid droplets within enterocytes

T D'Aquila, YH Hung, A Carreiro, KK Buhman - Biochimica et Biophysica …, 2016 - Elsevier
T D'Aquila, YH Hung, A Carreiro, KK Buhman
Biochimica et Biophysica Acta (BBA)-Molecular and Cell Biology of Lipids, 2016Elsevier
Dietary fat provides essential nutrients, contributes to energy balance, and regulates blood
lipid concentrations. These functions are important to health, but can also become
dysregulated and contribute to diseases such as obesity, diabetes, cardiovascular disease,
and cancer. Within enterocytes, the digestive products of dietary fat are re-synthesized into
triacylglycerol, which is either secreted on chylomicrons or stored within cytoplasmic lipid
droplets (CLDs). CLDs were originally thought to be inert stores of neutral lipids, but are now …
Abstract
Dietary fat provides essential nutrients, contributes to energy balance, and regulates blood lipid concentrations. These functions are important to health, but can also become dysregulated and contribute to diseases such as obesity, diabetes, cardiovascular disease, and cancer. Within enterocytes, the digestive products of dietary fat are re-synthesized into triacylglycerol, which is either secreted on chylomicrons or stored within cytoplasmic lipid droplets (CLDs). CLDs were originally thought to be inert stores of neutral lipids, but are now recognized as dynamic organelles that function in multiple cellular processes in addition to lipid metabolism. This review will highlight recent discoveries related to dietary fat absorption with an emphasis on the presence, synthesis, and metabolism of CLDs within this process.
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