Format

Send to

Choose Destination
Cell Physiol Biochem. 2019;52(6):1398-1411. doi: 10.33594/000000098.

Visfatin Promotes Monocyte Adhesion by Upregulating ICAM-1 and VCAM-1 Expression in Endothelial Cells via Activation of p38-PI3K-Akt Signaling and Subsequent ROS Production and IKK/NF-κB Activation.

Author information

1
Institute of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
2
Division of Nephrology, Wen-Lin Hemodialysis Unit, Taipei Veterans General Hospital, Taipei, Taiwan.
3
Division of Endocrinology and Metabolism, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
4
Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.
5
Department of Education and Research, Taipei City Hospital, Taipei, Taiwan, ccjuan@ym.edu.tw.

Abstract

BACKGROUND/AIMS:

Visfatin is known to act as a mediator in several metabolic disorders, such as obesity, diabetes, and cardiovascular diseases. This study aimed to investigate the effect of visfatin on the adhesion of THP-1 monocytes to human vascular endothelial cells and the underlying mechanism.

METHODS:

Monocytes adhesion to endothelial cells was determined by using fluorescence-labeled monocytes. ICAM-1 and VCAM-1 expression in endothelial cells were measured by western blotting. Production of reactive oxygen species (ROS) was measured by using a fluorescent dye. The amounts of nuclear factor-kappa B (NF-κB) and phosphorylation of inhibitory factor of NF-κB (IκB) were determined by using western blot analysis. The translocation of NF-κB from the cytoplasm to the nucleus was determined by using immunofluorescence.

RESULTS:

Here we showed that visfatin significantly caused the upregulation of intercellular cell adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) in endothelial cells, as well as enhanced monocyte adhesion to endothelial cells. Moreover, we found that inhibition of PI3K, Akt, and p38 MAPK activation significantly prevented visfatin-enhanced expression of ICAM-1 and VCAM-1 and monocyte adhesion to endothelial cells. Visfatin enhanced ROS production and IKK/NF-кB activation and then led to upregulation of ICAM-1 and VCAM-1 and enhanced monocyte adhesion to endothelial cells. These effects were also p38/PI3K/Akt-dependent.

CONCLUSION:

These results demonstrated that visfatin promoted monocyte-endothelial cell adhesion by increasing ICAM-1 and VCAM-1 expression via the activation of p38/PI3K/Akt signaling and downstream ROS production and IKK/NF-кB activation.

KEYWORDS:

Endothelial cell; ICAM-1; Monocyte adhesion; VCAM-1; Visfatin

PMID:
31075190
DOI:
10.33594/000000098
[Indexed for MEDLINE]
Free full text

Conflict of interest statement

The authors declare that no conflicts of interest exist.

MeSH terms, Substances, Grant support

MeSH terms

Substances

Grant support

Supplemental Content

Full text links

Icon for Cell Physiol Biochem Press GmbH Co KG
Loading ...
Support Center