Jiwon Ko, Soyoung Jang, Soyeon Jang, Song Park, Junkoo Yi, Dong Kyu Choi, Seonggon Kim, Myoung Ok Kim, Su-Geun Lim, Zae Young Ryoo
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Glucose-dependent insulinotropic polypeptide (GIP) alleviates ferroptosis in aging-induced brain damage through the Epac/Rap1 signaling pathway.
Glucose-dependent insulinotropic polypeptide (GIP), a 42-aminoacid hormone, exerts multifaceted effects in physiology, most notably in metabolism, obesity, and inflammation. Its significance extends to neuroprotection, promoting neuronal proliferation, maintaining physiological homeostasis, and inhibiting cell death, all of which play a crucial role in the context of neurodegenerative diseases. Through intricate signaling pathways involving its cognate receptor (GIPR), a member of the G protein-coupled receptors, GIP maintains cellular homeostasis and regulates a defense system against ferroptosis, an essential process in aging. Our study, utilizing GIP-overexpressing mice and in vitro cell model, elucidates the pivotal role of GIP in preserving neuronal integrity and combating age-related damage, primarily through the Epac/Rap1 pathway. These findings shed light on the potential of GIP as a therapeutic target for the pathogenesis of ferroptosis in neurodegenerative diseases and aging. [BMB Reports 2024; 57(9): 417-423].
期刊介绍:
The BMB Reports (BMB Rep, established in 1968) is published at the end of every month by Korean Society for Biochemistry and Molecular Biology. Copyright is reserved by the Society. The journal publishes short articles and mini reviews. We expect that the BMB Reports will deliver the new scientific findings and knowledge to our readers in fast and timely manner.