This study aimed at the molecular mechanism of Cordyceps sinensis polysaccharide-A(CPS-A) on angiotensin (Ang Ⅱ)-induced injury of L02 cells.The effect of AngⅡ and CPS-A on the proliferation of L02 cells was analyzed by MTT assay.PCR,Real-Time PCR and Western blot were also employed to determine the expression of IL-1β,AT1R,AT2R,NF-κB p65,TNFα and other inflammatory factors at mRNA and protein levels.The results showed that Ang Ⅱ and CPS-A could inhibit the proliferation of L02 cells by 1 × 10-5 mol/L and 200 μg/ mL,respectively.PCR,Real-Time PCR and Western blot showed that CPS-A could significantly down-regulate IL-1 β,TNF-α,NF-κB and AT1R.CPS-A has a good protective effect on AngⅡ-induced L02 cell injury.
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