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Preclinical Evaluation of Dihydropyrazole-Cored Positron Emission Tomography (PET) Ligands for Imaging of Receptor-Interacting Serine/Threonine Protein Kinase 1 (RIPK1) in the Brain
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2024-09-11 , DOI: 10.1021/acs.jmedchem.4c01263 Wanqing Li 1 , Xiaojun Zhang 2 , Jie Ma 3 , Jingyin Zhou 1 , Xuan Di 1 , Donglan Huang 1 , Kaixiang Zhou 4 , Jinming Zhang 2 , Lu Wang 3 , Hualong Fu 1 , Mengchao Cui 1, 4
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2024-09-11 , DOI: 10.1021/acs.jmedchem.4c01263 Wanqing Li 1 , Xiaojun Zhang 2 , Jie Ma 3 , Jingyin Zhou 1 , Xuan Di 1 , Donglan Huang 1 , Kaixiang Zhou 4 , Jinming Zhang 2 , Lu Wang 3 , Hualong Fu 1 , Mengchao Cui 1, 4
Affiliation
Receptor-interacting serine/threonine protein kinase 1 (RIPK1) has emerged as an important regulator of pathologic cell death and inflammation and is implicated in the pathologies of various central nervous system diseases. In this study, we reported the development of three potent dihydropyrazole-cored RIPK1 positron emission tomography (PET) ligands [18F]WL1–3. Among these, [18F]WL1 showed specific binding to RIPK1 in mouse brain sections in vitro through autoradiography and exhibited favorable brain kinetics in mice, characterized by a high initial uptake (brain2 min = 4.89% ID/g) and rapid washout (brain60 min = 0.21% ID/g). PET studies in rat brains revealed that [18F]WL1 could readily penetrate the brain with specific binding confirmed by inhibition effects of unlabeled WL1 and GSK′547. Notably, [18F]WL1 showed significant potential in imaging the alterations of RIPK1 in a rat brain of tumor necrosis factor α-induced systemic inflammatory response syndrome model. These findings may pave the way for the future design of potent RIPK1 PET ligands.
中文翻译:
二氢吡唑芯正电子发射断层扫描 (PET) 配体在大脑中受体相互作用丝氨酸/苏氨酸蛋白激酶 1 (RIPK1) 成像的临床前评价
受体相互作用的丝氨酸/苏氨酸蛋白激酶 1 (RIPK1) 已成为病理性细胞死亡和炎症的重要调节因子,与各种中枢神经系统疾病的病理有关。在这项研究中,我们报道了三种有效的二氢吡唑芯 RIPK1 正电子发射断层扫描 (PET) 配体的开发 [18F]WL1-3。其中,[18F]WL1 通过放射自显影在体外小鼠脑切片中显示出与 RIPK1 的特异性结合,并在小鼠中表现出良好的脑动力学,其特征是高初始摄取 (大脑2 分钟 = 4.89% ID/g) 和快速清除 (大脑60 分钟 = 0.21% ID/g)。大鼠大脑的 PET 研究表明,[18F]WL1 可以很容易地穿透大脑,未标记的 WL1 和 GSK′547 的抑制作用证实了特异性结合。值得注意的是,[18F]WL1 在肿瘤坏死因子诱导的全身炎症反应综合征模型的大鼠脑中 RIPK1 的改变成像中显示出显着的潜力α。这些发现可能为未来有效 RIPK1 PET 配体的设计铺平道路。
更新日期:2024-09-11
中文翻译:
二氢吡唑芯正电子发射断层扫描 (PET) 配体在大脑中受体相互作用丝氨酸/苏氨酸蛋白激酶 1 (RIPK1) 成像的临床前评价
受体相互作用的丝氨酸/苏氨酸蛋白激酶 1 (RIPK1) 已成为病理性细胞死亡和炎症的重要调节因子,与各种中枢神经系统疾病的病理有关。在这项研究中,我们报道了三种有效的二氢吡唑芯 RIPK1 正电子发射断层扫描 (PET) 配体的开发 [18F]WL1-3。其中,[18F]WL1 通过放射自显影在体外小鼠脑切片中显示出与 RIPK1 的特异性结合,并在小鼠中表现出良好的脑动力学,其特征是高初始摄取 (大脑2 分钟 = 4.89% ID/g) 和快速清除 (大脑60 分钟 = 0.21% ID/g)。大鼠大脑的 PET 研究表明,[18F]WL1 可以很容易地穿透大脑,未标记的 WL1 和 GSK′547 的抑制作用证实了特异性结合。值得注意的是,[18F]WL1 在肿瘤坏死因子诱导的全身炎症反应综合征模型的大鼠脑中 RIPK1 的改变成像中显示出显着的潜力α。这些发现可能为未来有效 RIPK1 PET 配体的设计铺平道路。