The effect of pramlintide, an antidiabetic amylin analogue, on angiogenesis-related markers in vitro

Leila Safaeian , Golnaz Vaseghi, Mina Mirian, Mehdi Dehghani Firoozabad

Abstract


Background and purpose: Irregularities of angiogenesis may participate in the pathogenesis of diabetes complications. Pramlintide is an amylin analogue administered for the treatment of type 1 and type 2 diabetes. The present investigation aimed at surveying the effect of pramlintide on angiogenesis-related markers in human umbilical vein endothelial cells (HUVECs).

Experimental approach: The proliferation of cells was assessed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. The effect of pramlintide on migration was estimated by Transwell® assay. in vitro evaluation of angiogenesis was performed by tube formation assay. The secretion of vascular endothelial growth factor (VEGF) to the supernatant of HUVECs was measured by an enzyme-linked immunosorbent assay (ELISA) kit. All experiments were performed in triplicate.

Findings / Results: Pramlintide exhibited no inhibitory effect on HUVECs proliferation. It significantly increased cell migration at the concentration of 1 µg/mL. Pramlintide (1 µg/mL) also enhanced average tubules length, size, and the mean number of junctions. However, there was not any significant change in VEGF release from HUVECs.

Conclusion and implications: Findings of this research revealed the effect of pramlintide on angiogenesis-related markers via enhancing migration and tubulogenesis in vitro, suggesting a worthwhile proposition for further clinical researches on improving vascular complications and healing of diabetic wounds.

Keywords


Angiogenesis; Cell migration; Diabetes mellitus; HUVEC; Pramlintide; VEGF.

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