Small-Molecule Activator of UNC-51-Like Kinase 1 (ULK1) That Induces Cytoprotective Autophagy for Parkinson’s Disease Treatment
摘要:
UNC-51-like kinase 1 (ULK1), the yeast Atg1 ortholog, is the sole serine-threonine kinase and initiating 1, enzyme in autophagy, which may be regarded as a target in Parkinson's disease (PD). Herein, we discovered a small molecule 33i (BL-918) as a potent activator of ULK1 by structure-based drug design. Subsequently, some key amino acid residues (Arg18, Lys50, Asn86, and Tyr89) were found to be crucial to the binding pocket between ULK1 and 33i by site-directed mutagenesis. Moreover, we found that 33i induced autophagy via the ULK complex in SH-SYSY cells. Intriguingly, this activator displayed a cytoprotective effect on MPP+-treated SH-SYSY cells, as well as protected against MPTP-induced motor dysfunction and loss of dopaminergic neurons by targeting ULK1-modulated autophagy in mouse models of PD. Together, these results demonstrate the therapeutic potential to target ULK1, and 33i, the novel activator of ULK1, may serve as a candidate drug for future PD treatment.
[EN] SUBSTITUTED PYRAZOLO[1,5-A]PYRIDINE COMPOUNDS AS RET KINASE INHIBITORS<br/>[FR] COMPOSÉS SUBSTITUÉS DE PYRAZOLO[1,5-A]PYRIDINES COMME INHIBITEURS DE LA KINASE RET
申请人:ARRAY BIOPHARMA INC
公开号:WO2017011776A1
公开(公告)日:2017-01-19
Provided herein are compounds of the General Formula I: and stereoisomers and pharmaceutically acceptable salts or solvates thereof, in which A, B, D, E, X1, X2, X3 and X4 have the meanings given in the specification, which are inhibitors of RET kinase and are useful in the treatment and prevention of diseases which can be treated with a RET kinase inhibitor, including diseases or disorders mediated by a RET kinase.
Pyrazolo[3,4-d]pyrimidines are potent protein kinase inhibitors with promising antitumor activity but suboptimal aqueous solubility, consequently worth being further optimized. Herein, we present the one-pot two-step procedure for the synthesis of a set of pyrazolo[3,4-d]pyrimidine prodrugs (1a−8a and 9a−e) with higher aqueous solubility and enhanced pharmacokinetic and therapeutic properties. ADME
吡唑并[3,4- d ]嘧啶是有效的蛋白激酶抑制剂,具有有希望的抗肿瘤活性,但水溶性较差,因此值得进一步优化。在这里,我们提出了一锅两步程序,用于合成一组具有较高水溶性和增强的药代动力学和治疗特性的吡唑并[3,4- d ]嘧啶前药(1a - 8a和9a - e)。ADME研究表明,最有前途的前药具有更好的水溶性,在人和鼠血清中具有良好的水解作用,并且相对于母体药物而言,其跨细胞膜的能力增强,这说明了它们在体外24小时的性能更好对人胶质母细胞瘤U87细胞系的细胞毒性。最后,还对体内的4–4a药物/前药进行了评估,揭示了前药具有良好疗效的有利的药代动力学特征。事实证明,前药方法的应用是提高母体药物水溶性的成功策略,对它们的生物学功效也产生了积极影响。
[EN] SUBSTITUTED PYRAZOLO[1,5-a]PYRAZINE COMPOUNDS AS RET KINASE INHIBITORS<br/>[FR] COMPOSÉS DE PYRAZOLO[1,5-A]PYRAZINE SUBSTITUÉS UTILISÉS EN TANT QU'INHIBITEURS DE LA KINASE RET
申请人:ANDREWS STEVEN W
公开号:WO2018136661A1
公开(公告)日:2018-07-26
Provided herein are compounds of the Formula I: and stereoisomers and pharmaceutically acceptable salts or solvates thereof, in which A, B, D, E, X1, X2, X3 and X4 have the meanings given in the specification, which are inhibitors of RET kinase and are useful in the treatment and prevention of diseases which can be treated with a RET kinase inhibitor, including diseases or disorders mediated by a RET kinase.
A serotonin reuptake inhibitor which can be used in the treatment of depression and which has a decreased occurrence of unwanted side effects. The serotonin reuptake inhibitors are bi-functional organic molecules which combine serotonin transporter reuptake inhibition with serotonin (5-HT, such as 5-HT2A) receptor antagonism in one molecular entity. The serotonin-selective reuptake inhibitor (SSRI) homologue portion of the molecule shows an affinity to the serotonin reuptake transporter (SERT) and has antidepressant properties. The piperazine or piperidine portion of the molecule demonstrates an affinity to 5-HT receptors and restores the undesired side effects of SSRIs.