Recombinant endoglycoceramidase I assisted by activator II (rEGCase I assisted by Activator II) 是EGCase I与Activator II的混合物。EGCase I作为一种特异性水解酶,能够高效解析糖脂类化合物(GSLs)。Activator II用于在无需使用清洁剂的条件下激活EGCase的功能。
Recombinant endoglycoceramidase II assisted by activator II 是一种生物催化剂,作为新生物催化技术的核心酶。酶工程的目标在于提高酶的反应动力学、底物选择性和在极端条件(如低或高 pH)下的活性。通过在这些酶改造中引入刺激响应性,可以实现对活性的动态控制。
C6 urea ceramide is an inhibitor of neutral ceramidase.1 It increases total ceramide levels in wild-type mouse embryonic fibroblasts (MEFs) and in HT-29 colon cancer cells but not in MEFs lacking neutral ceramidase. It inhibits proliferation of, and induces apoptosis and autophagy in HT-29, but not non-cancerous RIE-1, cells when used at concentrations of 5 and 10 μM. C6 urea ceramide decreases total β-catenin, increases phosphorylated β-catenin, and induces colocalization of β-catenin with the 20S proteasome in HT-29 and HCT116, but not RIE-1, cells. It reduces tumor growth and increases C16, C18, C20, and C24 ceramide levels in tumor tissue in an HT-29 mouse xenograft model when administered at doses of 1.25, 2.5, and 5 mg/kg for five days.
|1. García-Barros, M., Coant, N., Kawamori, T., et al. Role of neutral ceramidase in colon cancer. FASEB J. 30(12), 4159-4171 (2016).
ARN14988 is a potent inhibitor of acid ceramidase (IC50 = 12.8 nM for the human enzyme). It inhibits acid ceramidase activity and increases levels of C16 dihydro ceramide and C16 ceramide in A375, G361, M14, MeWo, MNT-1, and SK-MEL-28 melanoma cells. ARN14988 also reduces growth of A375 and G361 melanoma cells (EC50s = 41.8 and 67.7 μM, respectively).
C18 D-threoCeramide (d18:1/18:0) is a synthetic ceramide and stereoisomer of C18 ceramide .1It inhibits rat brain mitochondrial ceramidase (mt-CDase) with an IC50value of 16.6 μM.2[Matreya, LLC. Catalog No. 1855]
1.Koolath, S., Murai, Y., Suga, Y., et al.Chiral combinatorial preparation and biological evaluation of unique ceramides for inhibition of sphingomyelin synthaseChirality32(3)308-313(2019) 2.Usta, J., El Bawab, S., Roddy, P., et al.Structural requirements of ceramide and sphingosine based inhibitors of mitochondrial ceramidaseBiochemistry40(32)9657-9668(2001)
C18 L-threo Ceramide is a synthetic ceramide and stereoisomer of C18 ceramide that has been used for structural characterization of natural sphingolipids. It inhibits rat brain mitochondrial ceramidase (mt-CDase) with an IC50 value of 0.21 mol% (16.8 μM).