Engineering of a Potent, Long-Acting NPY2R Agonist for Combination with a GLP-1R Agonist as a Multi-Hormonal Treatment for Obesity
摘要:
Bariatric surgery results in increased intestinal secretion of hormones GLP-1 and anorexigenic PYY, which is believed to contribute to the clinical efficacy associated with the procedure. This observation raises the question whether combination treatment with gut hormone analogs might recapitulate the efficacy and mitigate the significant risks associated with surgery. Despite PYY demonstrating excellent efficacy and safety profiles with regard to food intake reduction, weight loss, and glucose control in preclinical animal models, PYY-based therapeutic development remains challenging given a low serum stability and half-life for the native peptide. Here, combined peptide stapling and PEG-fatty acid conjugation affords potent PYY analogs with >14 h rat half-lives, which are expected to translate into a human half-life suitable for once-weekly dosing. Excellent efficacy in glucose control, food intake reduction, and weight loss for lead candidate 22 in combination with our previously reported long-acting GLP-1 analog is demonstrated in a diet-induced obesity mouse model.
Synthesis, Biochemical Characterization, and Genetic Encoding of a 1,2,4‐Triazole Amino Acid as an Acetyllysine Mimic for Bromodomains of the BET Family
作者:Sören Kirchgäßner、Michael B. Braun、Natascha Bartlick、Cengiz Koç、Christopher D. Reinkemeier、Edward A. Lemke、Thilo Stehle、Dirk Schwarzer
DOI:10.1002/anie.202215460
日期:2023.3.13
A triazole-containing aminoacid (ApmTri) was established as a mimic of acetyllysine for bromodomains of the BET family. Biochemical and structural investigations showed that ApmTri binds with similar affinity to bromodomains as acetyllysine and reflects the binding mode of the native modification at the atomic level. Geneticencoding enables ApmTri incorporation into proteins allowing investigations
一种含三唑的氨基酸 (ApmTri) 被确定为 BET 家族溴结构域的乙酰赖氨酸模拟物。生化和结构研究表明,ApmTri 与溴结构域的结合亲和力与乙酰赖氨酸相似,反映了原子水平上天然修饰的结合模式。遗传编码使 ApmTri 能够整合到蛋白质中,从而可以研究溴域结合特性和抑制作用。