National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
RO1 NS122394
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
RO1 DK132902
米国
引用
ジャーナル: Science / 年: 2024 タイトル: Large library docking identifies positive allosteric modulators of the calcium-sensing receptor. 著者: Fangyu Liu / Cheng-Guo Wu / Chia-Ling Tu / Isabella Glenn / Justin Meyerowitz / Anat Levit Kaplan / Jiankun Lyu / Zhiqiang Cheng / Olga O Tarkhanova / Yurii S Moroz / John J Irwin / Wenhan ...著者: Fangyu Liu / Cheng-Guo Wu / Chia-Ling Tu / Isabella Glenn / Justin Meyerowitz / Anat Levit Kaplan / Jiankun Lyu / Zhiqiang Cheng / Olga O Tarkhanova / Yurii S Moroz / John J Irwin / Wenhan Chang / Brian K Shoichet / Georgios Skiniotis / 要旨: Positive allosteric modulator (PAM) drugs enhance the activation of the calcium-sensing receptor (CaSR) and suppress parathyroid hormone (PTH) secretion. Unfortunately, these hyperparathyroidism- ...Positive allosteric modulator (PAM) drugs enhance the activation of the calcium-sensing receptor (CaSR) and suppress parathyroid hormone (PTH) secretion. Unfortunately, these hyperparathyroidism-treating drugs can induce hypocalcemia and arrhythmias. Seeking improved modulators, we docked libraries of 2.7 million and 1.2 billion molecules against the CaSR structure. The billion-molecule docking found PAMs with a 2.7-fold higher hit rate than the million-molecule library, with hits up to 37-fold more potent. Structure-based optimization led to nanomolar leads. In ex vivo organ assays, one of these PAMs was 100-fold more potent than the standard of care, cinacalcet, and reduced serum PTH levels in mice without the hypocalcemia typical of CaSR drugs. As determined from cryo-electron microscopy structures, the PAMs identified here promote CaSR conformations that more closely resemble the activated state than those induced by the established drugs.