GS143 是一种选择性的 IκBα 泛素化抑制剂，对于 SCF^βTrCP1 介导的 IκBα 泛素化作用的 IC₅₀ 为 5.2 μM。GS143 抑制靶基因的 NF-κB 活化和转录，并且不抑制蛋白酶体的活性，并具有抗哮喘作用。

GS143 is a selec-tive IκBα ubiquitination inhibitor with an IC 50 of 5.2 μM for SCF-mediated IκBα ubiquitylation. GS143 sup-presses NF-κB acti-va-tion and tran-scrip-tion of tar-get genes and does not inhibit proteasome activity. GS143 has anti-asthma effect.

Solid

IC50: 5.2 μM (SCF-mediated IκBα ubiquitylation)

GS143 (10 μM or 20 μM) inhibits antigen-induced differentiation of Th2 cells but not of Th1 cells in vitro. The IL-4 pro-duc-tion in Th2-polar-iz-ing con-di-tion is mark-edly sup-pressed by GS143 in a dose-depen-dent man-ner.
GS143 suppresses the transcription of TNFα-induced NF-κB with a mean IC50 value of 10.5 μM. GS143 also inhibits TNFα-induced expression of ICAM-1 in HT-29 colon cancer cells with an IC50 value of 6.1 μM. The production levels of TNFα and IL-1β in LPS-activated THP-1 cells are inhibited with IC50 values of 5.3 μM and 2.1 μM, respectively. GS143 does not inhibit p53 and β-catenin. has not independently confirmed the accuracy of these methods. They are for reference only.

GS143 (16-32 μg/body; intranasal administration; once; BALB/c mice) treatment suppresses antigen-induced NF-κB activation in the lung of sensitized mice. GS143 treatment also inhibits antigen-induced eosinophil and lymphocyte recruitment into the airways and the expression of Th2 cytokines and eotaxin in the airways. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years；4°C 2 years

[1]. Koichi Hirose, et al. GS143, an IkappaB ubiquitination inhibitor, inhibits allergic airway inflammation in mice. Biochem Biophys Res Commun. 2008 Sep 26;374(3):507-11.
[2]. Hiroto Nakajima, et al. A novel small-molecule inhibitor of NF-kappaB signaling. Biochem Biophys Res Commun. 2008 Apr 18;368(4):1007-13.

In Vitro: DMSO : 37.5 mg/mL (80.39 mM; ultrasonic and warming and heat to 60°C)配制储备液