First Author | Franz D | Year | 2015 |
Journal | J Neuroimmunol | Volume | 284 |
Pages | 18-29 | PubMed ID | 26025054 |
Mgi Jnum | J:318360 | Mgi Id | MGI:6859347 |
Doi | 10.1016/j.jneuroim.2015.05.003 | Citation | Franz D, et al. (2015) Dopamine receptors D3 and D5 regulate CD4(+)T-cell activation and differentiation by modulating ERK activation and cAMP production. J Neuroimmunol 284:18-29 |
abstractText | Dopamine receptors have been described in T-cells, however their signalling pathways coupled remain unknown. Since cAMP and ERKs play key roles regulating T-cell physiology, we aim to determine whether cAMP and ERK1/2-phosphorylation are modulated by dopamine receptor 3 (D3R) and D5R, and how this modulation affects CD4(+) T-cell activation and differentiation. Our pharmacologic and genetic evidence shows that D3R-stimulation reduced cAMP levels and ERK2-phosphorylation, consequently increasing CD4(+) T-cell activation and Th1-differentiation, respectively. Moreover, D5R expression reinforced TCR-triggered ERK1/2-phosphorylation and T-cell activation. In conclusion, these findings demonstrate how D3R and D5R modulate key signalling pathways affecting CD4(+) T-cell activation and Th1-differentiation. |