A new class of molecules, C1—OH tributanoylated hexosamines, including, for example, GalNAc, GlcNAc and ManNAc, are demonstrated to increase cartilage-like tissue accumulation by IL-1β-stimulated chondrocytes. Furthermore, all three molecules reduced NFKB1 and IκBα driven gene expression, consistent with NFκB inhibitory properties of these analogs. GalNAc-a exposure produced the greatest ECM accumulation by IL-1β-stimulated chondrocytes. However, GalNAc-a exposure produced an opposite effect on MSC exposure, where a decrease in ECM accumulation was observed. These findings are in support of the function of NFκB signaling during limb development and growth plate chondrogenesis. The present invention shows the capability of this new class of hexosamine analogs as disease-modifying agents for treating cartilage damage.
一类新的分子--C1-OH 三丁酰化六糖,包括 GalNAc、GlcNAc 和 ManNAc 等,被证明能增加 IL-1β 刺激的软骨细胞的软骨样组织积累。此外,所有这三种分子都能减少 NFKB1 和 IκBα 驱动的
基因表达,这与这些类似物的 NFκB 抑制特性是一致的。暴露于 GalNAc-a 会使 IL-1β 刺激的软骨细胞产生最大的
ECM 积累。然而,GalNAc-a 的暴露对间叶干细胞的暴露产生了相反的影响,在间叶干细胞中观察到
ECM 积累减少。这些发现支持 NFκB 信号在肢体发育和生长板软骨形成过程中的功能。本发明显示了这一新类别的己
胺类似物作为治疗软骨损伤的疾病调节剂的能力。