Acute myeloid leukemia (AML) is the most common and aggressive form of acute leukemia in elderly people. FMS-like tyrosine kinase 3 (FLT3) is aberrantly active in many cases of AML. The discovery of FLT3 inhibitors has attracted much attention in recent years. We have discovered a series of pteridin-7(8H)-one derivatives, which exhibited great FLT3 inhibition activity. Stucture-activity relationship was clarified by molecular modeling and docking. Further in vitro and in vivo anti-AML studies would be carried out in MV4-11 cell line and xenograft model to illustrate the mechanism of action of representative compounds.
FMS样受体酪氨酸激酶3(FLT3)及其配体的过度表达和异常激活,与急性髓系白血病(AML)的不良预后、易复发等特点密切相关。开发高效低毒的新型FLT3小分子抑制剂对于AML治疗具有重要的现实意义。本研究发现了一系列新型靶向FLT3的嘧啶并二氢吡嗪酮类衍生物,分子水平抑制活性达到納摩尔级。我们通过同源模建和分子对接,对该系列化合物进行系统的结构研究,初步阐明化合物的构效关系,为后续结构优化作出指导。此外,我们将在细胞水平对上述分子进行评价,揭示化合物对FLT3-ITD突变细胞株MV4-11的增殖抑制和对FLT3以及下游关键信号通路的影响,并将建立人AML细胞MV4-11裸小鼠移植瘤模型,对代表化合物进行深入抗肿瘤活性研究。
FLT3是治疗急性髓细白血病的重要靶点。我们设计合成了一系列喋啶酮类衍生物,初步阐明其构效关系。其中部分高活性化合物,对FLT3分子水平抑制活性达到单纳摩尔级,对部分FLT3耐药突变结合能力达到亚纳摩尔。研究表明,代表化合物能通过抑制FLT3及下游信号通路磷酸化,选择性抑制FLT3-ITD突变依赖的AML细胞株增殖。候选药物能诱导AML细胞株发生G0/G1期阻滞,并诱导肿瘤细胞凋亡。对MV4-11皮下荷瘤模型,候选药物能显著抑制肿瘤生长。相关研究已申请中国专利,部分结果发表在药化领域顶级期刊Journal of Medicinal Chemistry。
{{i.achievement_title}}
数据更新时间:2023-05-31
Protective effect of Schisandra chinensis lignans on hypoxia-induced PC12 cells and signal transduction
Efficient photocatalytic degradation of organic dyes and reaction mechanism with Ag2CO3/Bi2O2CO3 photocatalyst under visible light irradiation
基于 Kronecker 压缩感知的宽带 MIMO 雷达高分辨三维成像
Engineering Leaf-Like UiO-66-SO_3H Membranes for Selective Transport of Cations
The Role of Osteokines in Sarcopenia: Therapeutic Directions and Application Prospects
基于气血理论探讨芪参益气滴丸调控eNOS-NO/cGMP/PKG通路干预射血分数保留心衰的分子机制
新型吡咯并噻唑烷类DNA靶向小分子的设计、合成及抗肿瘤活性研究
新型Pin1小分子抑制剂设计、合成和抗肿瘤活性研究
新型小分子IAPs抑制剂的设计、合成及生物活性研究
新型Bola双靶向抑制剂的合成及抗肿瘤活性研究