Development of Fluorescent 4-[4-(3<i>H</i>-Spiro[isobenzofuran-1,4′-piperidin]-1′-yl)butyl]indolyl Derivatives as High-Affinity Probes to Enable the Study of σ Receptors via Fluorescence-Based Techniques
作者:Francesca Serena Abatematteo、Maria Majellaro、Bianca Montsch、Rubén Prieto-Díaz、Mauro Niso、Marialessandra Contino、Angela Stefanachi、Chiara Riganti、Giuseppe Felice Mangiatordi、Pietro Delre、Petra Heffeter、Eddy Sotelo、Carmen Abate
DOI:10.1021/acs.jmedchem.2c01227
日期:2023.3.23
obtained. Compounds 19 (σ pan affinity) and 29 (σ2 selective), which displayed the best compromise between pharmacodynamic and photophysical properties, were investigated in flow cytometry, confocal, and live cell microscopy, demonstrating their specificity for the σ2 receptor. To the best of our knowledge, these are the first red-emitting fluorescent σ2 ligands, validated as powerful tools for the study of
Sigma (σ) 受体亚型 σ 1和 σ 2是具有广泛药学意义的靶点。σ 2受体有望用于开发针对癌症和阿尔茨海默病的诊断和治疗方法。然而,人们对 σ 2受体激活的机制知之甚少。为了有助于开发其治疗潜力,我们开发了新型特异性荧光配体。带有N- butyl-3 H -spiro[isobenzofuran-1,4'-piperidine] 部分的吲哚衍生物用荧光标签进行功能化。获得了从绿色到红色再到近红外发射的纳摩尔亲和荧光 σ 配体。化合物19(σ pan affinity) 和29 (σ 2 selective) 显示出药效学和光物理性质之间的最佳折衷,在流式细胞术、共聚焦和活细胞显微镜中进行了研究,证明了它们对 σ 2 受体的特异性。据我们所知,这些是第一个发出红色荧光的 σ 2配体,经验证可作为通过基于荧光的技术研究 σ 2受体的强大工具。