
Biocolor Blyscan™ Glycosaminoglycan Assay
采用常规生化方法,通过标准曲线和比色,可定量分析总硫酸化多糖(氨基聚糖和蛋白聚糖)的含量,亦可测定O端和N端硫酸氨基多糖的比值。主要采用的是Blyscan染料(Biocolor公司的专利产品),它可以特异性的与氨基聚糖和蛋白聚糖上的硫酸多糖组分结合。该方法不适于检测已经降解的硫酸化双糖片段、
该试剂盒可检测广泛的蛋白多糖,可检测的氨基多糖包括硫酸软骨素、硫酸角质素、硫酸皮肤素、硫酸肝素,不适合检测包含海藻酸的样品,因为它们含有糖醛酸。该试剂盒也不能对透明质酸定量,但透明质酸并不干扰对硫酸化氨基多糖的检测。细胞培养基中20%的胎牛血清也不会干扰实验。该方法检测灵敏度为5ug,所需时间为1小时
检测样本:可来自软骨组织、动脉组织、肺组织、皮肤组织、肿瘤组织、细胞核组织提取物、细胞培养液、羊水和尿液
实验操作
1. 绘制标准曲线
2. 待测样品的处理:
取50ul待测样品进行实验。如果反应物在656nm初的吸收峰大于1.5,则对样品进行稀释,待测样样品浓度落入标准曲线中段时,准确度较高。
3. 硫酸氨基聚糖—染料复合物的获得
加1.0ml的Blyscan染料溶液到待测样本中,充分混匀,待不溶物出现,离心,弃上清,则获得紫色的硫酸氨基聚糖—染料复合物
4. 硫酸氨基聚糖—染料复合物中染料的释放
加入1.0ml的染料释放剂,充分混匀。溶解5min以上,使染料充分释放
5. 测定
用分光光度计于波长656nm处测定,或使用colorimeter红色滤光片测定
产品订购
Product Code: B1000 110 assays
Product Code: B3000 440 assays
Glycosaminoglycan Assay Blyscan™
The Blyscan™ Glycosaminoglycan Assay is a quantitative dye-binding method for the analysis of sulfated proteoglycans and glycosaminoglycans, (sGAG).
Test material can be assayed directly when present in a soluble form, or following papain extraction from biological materials. The assay can be used to measure the total sGAG content and can also be adopted to determine the O- and N-sulfated glycosaminoglycan ratio within test samples.
The dye label used in the assay is 1,9-dimethylmethylene blue and the dye is employed under conditions that provide a specific label for the sulfated polysaccharide component of proteoglycans or the protein free sulfated glycosaminoglycan chains.
The assay is not suitable for small sulfated disaccharide fragments or for the samples containing alginates, as these contain uronic acid.