methyl-β-cyclodextrin

Methyl-β-cyclodextrin (Methyl-beta-cyclodextrin) 是一种大环化合物，可以作为疏水性化合物的增溶剂用于生物实验中。Methyl-β-cyclodextrin 也是一种脂筏抑制剂，具有降胆固醇活性，还具有潜在抗肿瘤活性。

Carboxymethyl-β-cyclodextrin, 99% 是一种阳离子环糊精，常用作药物载体，并且能够高效且具有选择性地结合非甾体抗炎药 （NSAID）。

Cho-Arg is a steroid-based cationic lipid that contains a cholesterol skeleton coupled to an L-arginine head group. It forms a complex with plasmid DNA and decreases plasmid DNA migration in an agarose-gel retardant assay at charge ratios greater than or equal to 4. Cho-Arg facilitates transfection of plasmid DNA into H1299 and HeLa cells in the presence or absence of fetal bovine serum, an effect that is reversed by the lipid raft-mediated endocytosis inhibitor methyl-β-cyclodextrin and the caveolae-mediated endocytosis inhibitor genistein . It is cytotoxic to H1299 cells (IC50 = 88.5 μg/ml).

Dios-Arg is a steroid-based cationic lipid that contains a diosgenin skeleton coupled to an L-arginine head group. It forms a complex with plasmid DNA and decreases plasmid DNA migration in an agarose-gel retardant assay at charge ratio greater than or equal to 4. Dios-Arg facilitates transfection of plasmid DNA into H1299 and HeLa cells in the presence and absence of fetal bovine serum, an effect that is reversed by the lipid raft-mediated endocytosis inhibitor methyl-β-cyclodextrin and the caveolae-mediated endocytosis inhibitor genistein . It has been used, coupled to 1,2-dioleoyl-sn-glycero-3-PE , to bind siRNA and plasmid DNA to form cationic lipid nanoparticles for intracellular transport. Dios-Arg is cytotoxic to H1299 and HeLa cells (IC50s = 83.5 and 74.1 μg/ml, respectively).

2H-Cho-Arg is a steroid-based cationic lipid that contains a 2H-cholesterol skeleton coupled to an L-arginine head group and can be used to facilitate gene transfection. It forms a complex with plasmid DNA (pDNA) and decreases pDNA migration in an electrophoretic mobility shift assay at +/- charge ratios of 4 or higher. 2H-Cho-Arg facilitates transfection of a luciferase gene into H1299 cells, an effect that is reversed by the lipid raft-mediated endocytosis inhibitor methyl-β-cyclodextrin and the caveolae-mediated endocytosis inhibitor genistein , but not by inhibitors of clathrin- or micropinocytosis-mediated endocytosis. It induces cytotoxicity in H1299 cells (IC50 = 92.7 μg/ml).

DM-β-CD (2,6-Di-O-methyl-β-cyclodextrin) 是一种环状化合物，由七个葡萄糖单元构成，其2位和6位被两个甲基取代。通常，它用于药物制剂中作为难溶性药物的增溶剂和载体。同时，由于能够与多种客体分子（如芳香族化合物、杀虫剂和重金属）形成包合物，它也在分析化学、食品科学和环境修复中被应用。

Heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin 是一种高纯度生化试剂，适合作为生物材料或有机合成中间体，广泛应用于生命科学领域的研究与实验。