5'-pApA is a linearized form of cyclic di-AMP, a bacterial second messenger that activates the host innate immune system through stimulator of interferon genes (STING).1,2,3,4It is a metabolite of cyclic di-AMP formedviahydrolysis by various phosphodiesterases (PDEs).55'-pApA is intended for use as a negative control for cyclic di-AMP signaling. 1.Burdette, D.L., Monroe, K.M., Sotelo-Troha, K., et al.STING is a direct innate immune sensor of cyclic-di-GMPNature478(7370)515-518(2011) 2.Parvatiyar, K., Zhang, Z., Teles, R.M., et al.DDX41 recognizes bacterial secondary messengers cyclic di-GMP and cyclic di-AMP to activate a type I interferon immune responseNat. Immunol.13(12)1155-1161(2012) 3.Woodward, J.J., Iavarone, A.T., and Portnoy, D.A.c-di-AMP secreted by intracellular Listeria monocytogenes activates a host type I interferon responseScience328(5986)1703-1705(2010) 4.Witte, C.E., Whiteley, A.T., Burke, T.P., et al.Cyclic di-AMP is critical for Listeria monocytogenes growth, cell wall homeostasis, and establishment of infectionmBio4(3)e00282-00213(2013) 5.Fahmi, T., Port, G.C., and Cho, K.H.c-di-AMP: An essential molecule in the signaling pathways that regulate the viability and virulence of gram-positive bacteriaGenes (Basel)8(8)197(2017)
The growth factors, platelet-derived growth factor (PDGF) and basic fibroblast growth factor (bFGF) play major roles in enhanced smooth muscle cells growth in rodent blood vessels after vascular injury. Tyrosine kinase inhibition has been shown to be effective in blocking tyrosine phosphorylation at the PDGF and bFGF receptors in cultured fibroblast and vascular smooth muscle cells which in turn inhibits their proliferation[1]. CGP 53716 is a specific PDGFR tyrosine kinase inhibitor on SMC (smooth muscle cell) proliferation and migration in vitro and in neointimal formationin vivo[3]. CGP 53716 inhibited serum-induced cell growth in RASMC (rat aortic smooth muscle cells). And it completely blocked PDGF-BB tyrosine receptor autophosphorylation in RASMC and 3T3 cells, PDGF-BB-induced phosphorylation of mitogen-activated protein kinase at 1 μM in RASMC and inhibited PDGF-BB-induced c-Fos protein expression at 1 μM in RASMC; consistent with inhibition of PDGF-BB-induced DNA synthesis. Further, CGP 53716 inhibited PDGF-BB-, bFGF- and EGF-induced DNA synthesis in a concentration-dependent manner in each cell line. And it showed a 2- to 4-fold selectivity for PDGF-BB-stimulated DNA synthesis over bFGF or EGF in RASMC or 3T3 cells[1]. CGP 53716 inhibited dose dependently tyrosine phosphorylation of both the known PDGFRs: the PDGFR-α and PDGFR-β. After rat carotid artery ballooning injuryin vivo, the migration of alpha-actin-positive cells on the luminal side of internal elastic lamina was decreased with 50 mg kg day of CGP 53716 from 38 ± 10 (control group) to 4 ± 2. Intima media ratio was inhibited by 40% after 14 days in the CGP 53716-treated group (P=0.028) after rat aortic denudation[3].
DC-120 is an ATP competitive AKT kinase inhibitor that suppressed proliferation and induced apoptosis in liver cancer cells both in vitro and in vivo. DC120 blocked the phosphorylation of downstream molecules in the AKT signal pathway in dose- and time-dependent manners both in vitro and in vivo. DC120 inhibits AKT activity in vitro with an EC(50) of 153 nM. DC120 at 20 mg kg day inhibited the CNE2 xenograft tumor growth with a treated group control group ratio of 38.1%, accompanied by increasing terminal deoxynucleotidyl transferasedUTP nick-end labeling-positive cells in the tumor sample.
D-(+)-Melezitose (Standard) is the standard substance of D-(+)-Melezitose, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. D-(+)-Melezitose can be used to identify indole-positive and indole-negative Klebsiella clinical isolates.
Sulfaquinoxaline Sodium Salt (Standard) 是 Sulfaquinoxaline Sodium Salt 的标准品,适用于定量分析、质量控制及生化实验等相关研究。Sulfaquinoxaline sodium salt (SQ-Na) 是一种兽用广谱抗菌剂,有抗革兰氏阴性菌和革兰氏阳性菌活性。Sulfaquinoxaline 能用于预防球虫病和细菌感染。