Discovery of an orally effective double-stapled peptide for reducing ovariectomy-induced bone loss in mice

Autor: Wei Cong, Huaxing Shen, Xiufei Liao, Mengjun Zheng, Xianglong Kong, Zhe Wang, Si Chen, Yulei Li, Honggang Hu, Xiang Li
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Acta Pharmaceutica Sinica B, Vol 13, Iss 9, Pp 3770-3781 (2023)
Druh dokumentu: article
ISSN: 2211-3835
DOI: 10.1016/j.apsb.2023.05.004
Popis: Stapled peptides with significantly enhanced pharmacological profiles have emerged as promising therapeutic molecules due to their remarkable resistance to proteolysis and performance to penetrate cells. The all-hydrocarbon peptide stapling technique has already widely adopted with great success, yielding numerous potent peptide-based molecules. Based on our prior efforts, we conceived and prepared a double-stapled peptide in this study, termed FRNC-1, which effectively attenuated the bone resorption capacity of mature osteoclasts in vitro through specific inhibition of phosphorylated GSK-3β. The double-stapled peptide FRNC-1 displayed notably improved helical contents and resistance to proteolysis than its linear form. Additionally, FRNC-1 effectively prevented osteoclast activation and improved bone density for ovariectomized (OVX) mice after intravenous injection and importantly, after oral (intragastric) administration. The double-stapled peptide FRNC-1 is the first orally effective peptide that has been validated to date as a therapeutic candidate for postmenopausal osteoporosis (PMOP).
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