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。
Spliceostatin A (GMP)是 Spliceostatin A 的 GMP 级别试剂。Spliceostatin A 是一种抗癌剂和剪接抑制剂,抑制剪接体剪接机制,抑制有丝分裂克隆扩增和脂肪生成。Spliceostatin A (GMP) 诱导细胞周期停滞在 G1 和 G2 M 期,诱导细胞凋亡。
NSC 194308, an enhancer of U2AF2-RNA complexes, promotes the association of the U2AF1-U2AF2-SF1-splice site RNA complex by targeting a site between U2AF2 RNA recognition motifs (RRM1 and RRM2). It inhibits pre-mRNA splicing by stalling spliceosome assembly at the stage where U2AF recruits U2 snRNP to the branchpoint. Additionally, NSC 194308 strengthens the binding of pre-mRNA to U2AF2, selectively inducing cell death in leukemia cell lines with spliceosome mutations [1].