Effect of activated nuclear receptors PPAR?,LXR?,RXR? on ABC1 and CD36 mRNA expression in THP-1 cell / 中国病理生理杂志

ABSTRACT

AIM: To study the discrepancy and it's significance of ATP binding cassette transporter(ABC1) and CD36 mRNA expression while activate nuclear receptor RRAR?,LXR?,RXR? in THP-1 cells. METHODS: Cultured THP-1 cells were induced to become macrophage by PMA at concentration of 40 ?g/L for 48 hours. Troglitazone, 22(R)-hydrocholesterol and 9-cis-retinoid acid(9-CRA),activators for PPAR?,LXR? and RXR? respectively, were incubated with the macrophage for 24 hours. Total RNA of these cells were abstracted and reverse transcriptional polymerase chain reaction were performed to inspect the expression of ABC1 and CD36 mRNA in the cells. RESULTS: Expression of ABC1 mRNA increased in the presence of troglitazone, 22(R)-HC and 9-CRA. CD36 mRNA also increased while PPAR? activated. Activation of LXR? showed almost no effect on CD36 mRNA expression, and expression of CD36 mRNA was decreased by 9-CRA.CONCLUSION: The discrepancies existing in ABC1 and CD36 mRNA expression while activate nuclear receptors PPAR?,LXR?,RXR? in THP-1 cells implyed that LXR?,RXR? were better targets to deal with to improve cholesterol reverse transportation.