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Effects of different fatty acids on BRL3A rat liver cell damage
Author(s) -
Yang Wei,
Liu Runqi,
Xia Cheng,
Chen Yuanyuan,
Dong Zhihao,
Huang Baoyin,
Li Ruirui,
Li Ming,
Xu Chuang
Publication year - 2020
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.29553
Subject(s) - fatty acid synthase , lipogenesis , biochemistry , fatty acid , fatty acid synthesis , chemistry , oleic acid , lipid metabolism , palmitoleic acid , linoleic acid , medicine , biology
To evaluate the effects of fatty acids on endoplasmic reticulum (ER) stress, oxidative stress, and lipid damage. We treated BRL3A rat liver cells with, linoleic (LA), linolenic, oleic (OA), palmitic (PA), palmitoleic (POA), or stearic (SA) acid for 12 hr. The characteristics of cell lipid deposition, oxidative stress indexes, ER stress markers, nuclear factor κB p65 (NF‐κB p65), lipid synthesis and transport regulators, and cholesterol metabolism regulators were analyzed. Endoplasmic chaperones like glucose‐regulated protein 78, CCAAT‐enhancer‐binding protein, NF‐κB p65, hydrogen peroxide, and malonaldehyde in PA‐ and SA‐treated cells were significantly higher than in other treated cells. Deposition of fatty acids especially LA and POA were significantly increased than in other treated cells. De novo lipogenesis regulators sterol regulatory element‐binding protein 1c, fatty acid synthase, and acetyl‐coenzyme A carboxylase 1 (ACC1) expression were significantly increased in all fatty acid stimulation groups, and PA‐ and SA‐treated cells showed lower p‐ACC1 expression and higher scd1 expression than other fatty acid groups. Very low‐density lipoprotein synthesis and apolipoprotein B100 expression in free fatty acids treated cells were significantly lower than control. PA, SA, OA, and POA had shown significantly increased cholesterol synthesis than other treated cells. PA and SA showed the lower synthesis of cytochrome P7A1 and total bile acids than other fatty acids treated cells. Excess of saturated fatty acids led to severe ER and oxidative stress. Excess unsaturated fatty acids led to increased lipid deposition in cultured hepatocytes. A balanced fatty acid intake is needed to maintain lipid homeostasis.