Pladienolide B 是一种有效的剪接体抑制剂,是从钝顶链霉菌 Mer-12 中分离出的大环内酯类化合物,其作用靶向剪接体的 SF3B1 亚单位。Pladienolide B 通过抑制前 mRNA 剪接发挥抗肿瘤作用,诱导调亡。Pladienolide B 具有抗肿瘤活性,可用于研究白血病和淋巴肿瘤。
Dyrk1A-IN-5 (compound 5j) is a highly potent and selective inhibitor of DYRK1A, exhibiting an IC50 of 6 nM. It dose-dependently diminishes the phosphorylation of Thr434 in SF3B1, with an IC50 of 0.5 μM. Moreover, Dyrk1A-IN-5 effectively inhibits the phosphorylation of tau at Thr212, with an IC50 of 2.1 μM. Given these properties, Dyrk1A-IN-5 is a valuable tool for Down syndrome research [1].