CD40-TRAF6 Signaling Inhibitor, 6877002

A cell-permeable propenone compound that disrupts TNF receptor-associated factor 6 (TRAF6) and CD40 coupling by targeting TRAF6 via direct affinity interaction (K_d = 97 µM), effectively inhibiting LPS-induced NF-κB activation in murine macrophage RAW264.7 (IC₅₀ 15.9 µM; drug treatment starts 1 h prior to 2 h CD40 expression induction by LPS) as well as anti-CD40 antibody FGK45-stimulated IL-1β expression (IC₅₀<10 µM; drug treatment starts 1 h prior to 6 h antibody stimulation). Daily intraperitoneal injection in vivo (10 µmol/kg/d = 2.513 mg/kg/d) during the last 6 weeks of a 12-week murine high fat diet-induce obesity (DIO) study is reported to improve insulin sensitivity, reduce hepatosteatosis, and prevent obesity-related inflammation in fat tissue (AT), as evidenced by a 40% less CD11b⁺F4/80⁺CD11c⁺ M1 macrophages in the stromal vascular fraction (SVF) of gonadal AT (gonAT) than the control DIO mice. Genetic studies likewise reveal that disruption of TRAF6-mediated CD40 signaling ameliorates obesity related complications, while CD40 knockout or deficit in TRAF2/3/5-CD40 interaction exacerbates metabolic complications in DIO mice.

A cell-permeable, bioavailable propenone compound that specifically targets TNF receptor-associated factor 6 (TRAF6; K_d = 97 µM for TRAF6 C-domain) and disrupts its functional coupling with CD40. A six-week treatment of C57BL/6 mice fed high fat diet (HFD) with this compound show significant improvement in insulin sensitivity and hepatosteatosis without affecting HFD-induced weight gain. Also reported to reduce gonadal adipose tissue inflammation and diminish the number of CD11b⁺F4/80⁺CD11c⁺ M1 macrophages. Inhibits NF-κB activation in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells (IC₅₀ 15.9 µM) and reduce IL-1β and IL-6 expression in anti-CD40 antibody FGK45-stimulated primary bone marrow-derived macrophages.

Cell permeable: yes

Primary Target
TRAF6

Packaged under inert gas

Toxicity: Standard Handling (A)

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Use only fresh DMSO for reconstitution.

Chatzigeorgiou, A., et al. 2014. Proc. Natl. Acad. Sci. USA111, 2686.

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