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Erschienen in: Endocrine 2/2021

20.11.2020 | Original Article

Antidiabetic compounds 8a, 8b, 8k, and 9h enhance insulin secretion: activity and mechanism

verfasst von: Hui Li, Jian Zhang, Yongli Fu, Yixin Zhang, Chunhui Zhang, Xiaozhu Sun, Fang Wu, Jing He

Erschienen in: Endocrine | Ausgabe 2/2021

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Abstract

Purpose

This study primarily investigated the effects of hypoglycemic compounds (Imeglimin derivatives) on insulin secretion in type 2 diabetes mellitus (T2DM), and further explored the possible mechanism underlying these effects.

Methods

Firstly, Metformin was used as the initiating compound to synthesize three sets of derivatives which contained Imeglimin structure core. At the cellular level, we screened compounds with better effect on the activity of insulin receptor tyrosine protein kinase (IFcTPK) after the islet β cells were treated with the compounds of different concentrations. The insulin secretion was assessed using radioimmunoassay and the cytotoxicity to islet β cells was evaluated by means of MTT assay following treatment with the compounds. The Ca2+-related mechanism by which these compounds promote insulin secretion was elucidated with whole cell recordings from current-clamp mode.

Results

Totally, 48 synthesized compounds were generated, wherein 10 compounds could increase the activity of IFcTPK in HIT-T15 cells better among these compounds. The modified Imeglimin, especially in the structure of hydrophilic hydroxyl or piperidine rings, could improve the activity of the compound to promote insulin secretion. Furthermore, the compounds 8a, 8b, 8k, and 9h revealed high insulin secretion-promoting activity. These compounds enhanced insulin secretion in islet β cells by repressing the ATP-sensitive K(+) and voltage-gated K+ pathway.

Conclusions

Our findings indicate that the hypoglycemic compounds 8a, 8b, 8k, and 9h confer better promotive effect on insulin secretion, which provides a reference for the development of drugs with better hypoglycemic activity.
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Metadaten
Titel
Antidiabetic compounds 8a, 8b, 8k, and 9h enhance insulin secretion: activity and mechanism
verfasst von
Hui Li
Jian Zhang
Yongli Fu
Yixin Zhang
Chunhui Zhang
Xiaozhu Sun
Fang Wu
Jing He
Publikationsdatum
20.11.2020
Verlag
Springer US
Erschienen in
Endocrine / Ausgabe 2/2021
Print ISSN: 1355-008X
Elektronische ISSN: 1559-0100
DOI
https://doi.org/10.1007/s12020-020-02537-5

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