Effect of oxidized low density lipoprotein on CD36 expression in macrophage
2006
Objective: To investigate the effect of oxLDL on CD36 expression and cholesterol influx in THP-1 macrophage. Methods: THP1 macrophage were treated with 50mg/L oxLDL for 0,12,24,36,48 h respectively.Oil red O staining was used to observe the intracellular lipid droplets.\labeled Cholesterol influx was determined by FJ-2107P type liquid scintillator.CD36 mRNA and protein level were determined by reverse transcription-polymerase chain reaction(RT-PCR) and Western blotting respectively. Results:We found that oxLDL elevated CD36 in both protein and mRNA levels and increased cholesterol influx in a time-dependent manner.The levels of cholesterol influx were 23.5%、(27.8%、)39.7%、44.1% and 49.7% respectively. Conclusion: oxLDL may upregulate CD36 expression and increase cholesterol influx.
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