Home Blog of Signal Transduction DNA Damage/DNA Repair P450 (e.g. CYP17) SIRT1 prevents hyperuricemia via the PGC-1α/PPARγ-ABCG2 pathway

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SIRT1 prevents hyperuricemia via the PGC-1α/PPARγ-ABCG2 pathway

Silent information regulator T1 (SIRT1) plays several key roles in the regulation of lipid and glucose homoeostasis. In this study, we investigated the potential role of SIRT1 in hyperuricemia and explored possible mechanisms. Significant hyperuricemia was detected in C57BL/6 mice treated with oxonate and yeast polysaccharide. Resveratrol (RSV), a specific SIRT1 activator, was administered to the mice. SIRT1 suppressed the increased serum uric acid level but up-regulated the expression of urate transporter ATP-binding cassette subfamily G member 2 (ABCG2) in the ileum of hyperuricemic mice. In a human colon carcinoma cell line, SIRT1 promoted ABCG2 production through the deacetylation of peroxisome proliferator-activated receptor (PPAR) γ co-activator 1α (PGC-1α), which then activated the effectors of PPARγ. Interestingly, the SIRT1-induced up-regulation of ABCG2 was significantly inhibited when PGC-1α or PPARγ was blocked by siRNA transfection. Our data demonstrated that SIRT1 and its activator, RSV, have clear anti-hyperuricemia functions in this mouse model. One possible mechanism is the activation of ABCG2 in the ileum through the PGC-1α/PPARγ pathway.

Related Products

Cat.No. Product Name Information
S2046 Pioglitazone HCl Pioglitazone HCl (AD-4833, U-72107E) is an inhibitor of cytochrome P450 (CYP)2C8 and CYP3A4 enzymes. Pioglitazone HCl inhibits CYP2C8, CYP3A4 and CYP2C9 with Ki of 1.7 μM, 11.8 μM and 32.1 μM, respectively. Pioglitazone HCl is also a selective peroxisome proliferator-activated receptor-gamma (PPARγ) agonist with EC50 of 0.93 μM and 0.99 μM for human PPARγ and mouse PPARγ, respectively. Pioglitazone HCl inhibits mitochondrial iron uptake, lipid peroxidation, and subsequent ferroptosis.

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P450 (e.g. CYP17)