دورية أكاديمية
Unveiling the Role of Tryptophan 2,3-Dioxygenase in the Angiogenic Process
| العنوان: | Unveiling the Role of Tryptophan 2,3-Dioxygenase in the Angiogenic Process |
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| المؤلفون: | Marta Cecchi, Cecilia Anceschi, Angela Silvano, Maria Luisa Coniglio, Aurora Chinnici, Lucia Magnelli, Andrea Lapucci, Anna Laurenzana, Astrid Parenti |
| المصدر: | Pharmaceuticals, Vol 17, Iss 5, p 558 (2024) |
| بيانات النشر: | MDPI AG, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medicine LCC:Pharmacy and materia medica |
| مصطلحات موضوعية: | tryptophan 2,3-dioxygenase, angiogenesis, melanoma, kynurenine pathway, endothelial progenitor cells, endothelial cells, Medicine, Pharmacy and materia medica, RS1-441 |
| الوصف: | Background: Indoleamine 2,3-dioxygenase (IDO1) and tryptophan-2,3-dioxygenase (TDO) are the two principals enzymes involved in the catabolization of tryptophan (Trp) into kynurenine (Kyn). Despite their well-established role in the immune escape, their involvement in angiogenesis remains uncertain. We aimed to characterize TDO and IDO1 in human umbilical venular endothelial cells (HUVECs) and human endothelial colony-forming cells (ECFCs). Methods: qRT-PCR and immunofluorescence were used for TDO and IDO1 expression while their activity was measured using ELISA assays. Cell proliferation was examined via MTT tests and in in vitro angiogenesis by capillary morphogenesis. Results: HUVECs and ECFCs expressed TDO and IDO1. Treatment with the selective TDO inhibitor 680C91 significantly impaired HUVEC proliferation and 3D-tube formation in response to VEGF-A, while IDO1 inhibition showed no effect. VEGF-induced mTor phosphorylation and Kyn production were hindered by 680C91. ECFC morphogenesis was also inhibited by 680C91. Co-culturing HUVECs with A375 induced TDO up-regulation in both cell types, whose inhibition reduced MMP9 activity and prevented c-Myc and E2f1 upregulation. Conclusions: HUVECs and ECFCs express the key enzymes of the kynurenine pathway. Significantly, TDO emerges as a pivotal player in in vitro proliferation and capillary morphogenesis, suggesting a potential pathophysiological role in angiogenesis beyond its well-known immunomodulatory effects. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1424-8247 |
| Relation: | https://www.mdpi.com/1424-8247/17/5/558; https://doaj.org/toc/1424-8247 |
| DOI: | 10.3390/ph17050558 |
| URL الوصول: | https://doaj.org/article/c027377be2114de097431b9153a87e88 |
| رقم الأكسشن: | edsdoj.027377be2114de097431b9153a87e88 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14248247 |
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| DOI: | 10.3390/ph17050558 |