Transforming growth factor ß-activated kinase 1 negatively regulates interleukin-1α-induced stromal-derived factor-1 expression in vascular smooth muscle cells.
Biochem Biophys Res Commun
; 463(1-2): 130-6, 2015.
Article
in En
| MEDLINE
| ID: mdl-26002466
ABSTRACT
Stromal-derived Factor-1 (SDF-1) derived from vascular smooth muscle cells (VSMCs) contributes to vascular repair and remodeling in various vascular diseases. In this study, the mechanism underlying regulation of SDF-1 expression by interleukin-1α (IL-1α) was investigated in primary rat VSMCs. We found IL-1α promotes SDF-1 expression by up-regulating CCAAT-enhancer-binding protein ß (C/EBPß) in an IκB kinase ß (IKKß) signaling-dependent manner. Moreover, IL-1α-induced expression of C/EBPß and SDF-1 was significantly potentiated by knockdown of transforming growth factor ß-activated kinase 1 (TAK1), an upstream activator of IKKß signaling. In addition, we also demonstrated that TAK1/p38 mitogen-activated protein kinase (p38 MAPK) signaling exerted negative effect on IL-1α-induced expression of C/EBPß and SDF-1 through counteracting ROS-dependent up-regulation of nuclear factor erythroid 2-related factor 2 (NRF2). In conclusion, TAK1 acts as an important regulator of IL-1α-induced SDF-1 expression in VSMCs, and modulating activity of TAK1 may serve as a potential strategy for modulating vascular repair and remodeling.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
MAP Kinase Kinase Kinases
/
Myocytes, Smooth Muscle
/
Interleukin-1alpha
/
Chemokine CXCL12
Limits:
Animals
Language:
En
Journal:
Biochem Biophys Res Commun
Year:
2015
Type:
Article
Affiliation country:
China