Gemigliptin Inhibits Interleukin-1β–Induced Endothelial Mesenchymal Transition via Canonical-Bone Morphogenetic Protein Pathwayopen access
- Authors
- Hong, Oak-Kee; Lee, Seong-Su; Yoo, Soon Jib; Lee, Min-Kyung; Kim, Mee-Kyoung; Baek, Ki-Hyun; Song, Ki-Ho; Kwon, Hyuk-Sang
- Issue Date
- Jun-2020
- Publisher
- KOREAN ENDOCRINE SOC
- Keywords
- LC15-0444; Dipeptidyl-peptidase IV inhibitors; Interleukin-1beta; Bone morphogenetic proteins; Endothelial-to-mesenchymal transition
- Citation
- ENDOCRINOLOGY AND METABOLISM, v.35, no.2, pp.384 - 395
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- ENDOCRINOLOGY AND METABOLISM
- Volume
- 35
- Number
- 2
- Start Page
- 384
- End Page
- 395
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145549
- DOI
- 10.3803/EnM.2020.35.2.384
- ISSN
- 2093-596X
- Abstract
- Background: Endothelial-to-mesenchymal transition (EndMT) contributes to inflammatory conditions inducing conversion of endothelial cells (ECs) into activated fibroblasts, promoting fibrotic diseases. Pm-inflammatory cytokine is the most potent inducer of EndMT. We investigated inhibition of interleukin-1 beta (IL-1 beta)-induced EndMT by gemigliptin, a dipeptidyl peptidase-IV inhibitor.
Methods: We exposed human umbilical vein endothelial cells (HUVECs) to 10 ng/mL IL-1 beta/20 mu M gemigliptin and analyzed the expression of endothelial, smooth muscle, mesenchymal, and osteoblastic markets, bone motphogenetic protein (BMP), Smad, and non-Smad signaling pathway proteins.
Results: Morphological changes showed gemigliptin blocked IL-1 beta-induced EndMT. upregulated EC madcers, and downregulated smooth muscle and mesenchymal markers. IL-1 beta activation of HUVECs is initiated by the BMP/Smad and non-smad BMP signaling pathways. Gemigliptin inhibited IL-1 beta induction of BMP2 and 7, activin receptor type IA, BMP receptor type IA, and BMP receptor type II. Reversal of IL-1 beta-mediated inhibition of BMP-induced Smad1/5/8, Smad2, and Smad3 phosphorylation by gemigliptin suggests involvement of the Smad pathway in gemigliptin action. In the non-Smad BMP pathway, gemigliptin treatment significantly increased the deactivation of extracellular regulated protein kinase (ERK), p38, and JNK by IL-1 beta. Gemigliptin treatment suppressed BMP-2-induced expression of key osteoblastic markers including osterix, runt-related transcription factor 2, and hepcidin during IL-1 beta-induced EndMT.
Conclusion: We demonstrated a novel protective mechanism of gemigliptin against fibrosis by suppressing IL-1 beta-induced EndMT.
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