A calpain inhibitor protects against fractalkine production in lipopolysaccharide-treated endothelial cellsopen access
- Authors
- Jang, Jaewoong; Yoon, Yoo Sik; Oh, Dong-Jin
- Issue Date
- Sep-2017
- Publisher
- ELSEVIER INC
- Keywords
- Calpain; Caspase; CX3CL1; Endothelial cells; Lipopolysaccharides
- Citation
- KIDNEY RESEARCH AND CLINICAL PRACTICE, v.36, no.3, pp 224 - 231
- Pages
- 8
- Journal Title
- KIDNEY RESEARCH AND CLINICAL PRACTICE
- Volume
- 36
- Number
- 3
- Start Page
- 224
- End Page
- 231
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4058
- DOI
- 10.23876/j.krcp.2017.36.3.224
- ISSN
- 2211-9132
2211-9140
- Abstract
- Background: Fractalkine (CX3CL1) is a chemokine with a unique CX3C motif and is produced by endothelial cells stimulated with lipopolysaccharide (LPS), tumor necrosis factor (TNF)-alpha, interleukin (IL)-1, and interferon-gamma. There have been several reports that the caspase/calpain system is activated in endotoxemia, which leads to cellular apoptosis and acute inflammatory processes. We aimed to determine the role of the caspase/calpain system in cell viability and regulation of fractalkine production in LPS-treated endothelial cells. Methods: Human umbilical vein endothelial cells (HUVECs) were stimulated with 0.01-100 mu g/mL of LPS to determine cell viability. The changes of CX3CL1 expression were compared in control, LPS (1 mu g/mL)-, IL-1 alpha (1 mu g/ mL)-, and IL-1 beta (1 mu g/mL)-treated HUVECs. Cell viability and CX3CL1 production were compared with 50 mu M of inhibitors of caspase-1, caspase-3, caspase-9, and calpain in LPS-treated HUVECs. Results: Cell viability was significantly decreased from 1 to 100 mu g/mL of LPS. Cell viability was significantly restored with inhibitors of caspase-1, caspase-3, caspase-9, and calpain in LPS-treated HUVECs. The expression of CX3CL1 was highest in IL-1 beta-treated HUVECs. CX3CL1 production was highly inhibited with a calpain inhibitor and significantly decreased with the individual inhibitors of caspase-1, caspase-3, and caspase-9. Conclusion: The caspase/calpain system is an important modulator of cell viability and CX3CL1 production in LPS-treated endothelial cells.
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