Figure 3.
Effect of lentinan on expression of cytokine and inflammasome components. (A) BMDMs were treated with the indicated dosage of lentinan (LNT) or LPS (10 ng/mL). Expression of IL-1α, TNFα, IL-6, IL-1rn, IL-10, Pro-IL-1β, NLRP3, NLRC4, AIM2, and Pro-Casp1 mRNAs was measured by RT-PCR and the right bar graph indicates relative band density. (B) BMDMs were treated with LPS (10 ng/mL) or LNT (1 mg/mL) with/without TAK-242, TLR4 inhibitor. Indicated gene expression levels were assessed by RT-PCR. (C) BMDMs were treated with LNT purified by endotoxin removal resin (Endotoxin-removed LNT) or intact LNT as indicated. NLRP3 and Pro-IL-1β proteins were measured by immunoblotting. (D) LPS-primed BMDMs were treated with endotoxin-removed LNT with/without dsDNA. Secretion of IL-1β was measured by ELISA. All RT-PCR data shown are representative of at least three independent experiments. Bar graph presents the mean ± SD.