Role of dipeptidyl peptidase-4 as a potentiator of activin/nodal signaling pathway
| Autor: | Minjoo Jang, Dong-Seok Park, Sun-Cheol Choi, Kyuhee Kim |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
animal structures Embryo Nonmammalian Cellular differentiation Dipeptidyl Peptidase 4 Xenopus Nodal signaling Embryonic Development Adamantane Smad2 Protein Biology Xenopus Proteins DPP4 Biochemistry 03 medical and health sciences 0302 clinical medicine Animals Humans Dipeptidyl peptidase-4 Activin/Nodal signaling Nodal signaling pathway Phosphorylation Molecular Biology Dipeptidyl-Peptidase IV Inhibitors General Medicine Dipeptides Articles Potentiator biology.organism_classification Cell biology Activins 030104 developmental biology HEK293 Cells Embryo 030220 oncology & carcinogenesis Signal transduction NODAL Signal Transduction |
| Zdroj: | BMB Reports |
| ISSN: | 1976-670X |
| Popis: | DPP4 (dipeptidyl peptidase-4), a highly conserved transmembrane glycoprotein with an exo-peptidase activity, has been shown to contribute to glucose metabolism, immune regulation, signal transduction, and cell differentiation. Here, we show that DPP4 is involved in control of activin/nodal signaling in Xenopus early development. In support of this, gain of function of DPP4 augmented Smad2 phosphorylation as well as expression of target genes induced by activin or nodal signal. In addition, Dpp4 and Xnr1 showed synergistic effect on induction of ectopic dorsal body axis, when co-injected at suboptimal doses in early embryos. Conversely, saxagliptin, a DPP4 inhibitor repressed activin induction of Smad2 phosphorylation. Notably, overexpression of Dpp4 disrupted specification of dorsal body axis of embryo, leading to malformed phenotypes such as spina bifida and a shortened and dorsally bent axis. Together, these results suggest that DPP4 functions as a potentiator of activin/nodal signaling pathway. [BMB Reports 2018; 51(12): 636-641]. |
| Databáze: | OpenAIRE |
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