PMID- 25210730 OWN - NLM STAT- MEDLINE DCOM- 20151026 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 9 IP - 9 DP - 2014 TI - Salusin-beta, but not salusin-alpha, promotes human umbilical vein endothelial cell inflammation via the p38 MAPK/JNK-NF-kappaB pathway. PG - e107555 LID - 10.1371/journal.pone.0107555 [doi] LID - e107555 AB - OBJECTIVE: Recently, salusin-beta has been reported to have pro-atherosclerotic effects, but salusin-alpha has anti-atherosclerotic effects. Our previous study has shown that salusin-beta but not salusin-alpha promotes vascular inflammation in apoE-deficient mice. However, the underlying mechanism remains unknown. In this study, we observed the effect of salusins on inflammatory responses and the MAPK-NF-kappaB signaling pathway in human umbilical vein endothelial cells (HUVECs). METHODS AND RESULTS: HUVECs were incubated with different concentrations of salusin-alpha and salusin-beta. The levels of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) were determined using enzyme-linked immunosorbent assay (ELISA). The mRNA expressions of vascular cell adhesion molecule-1 (VCAM-1) and monocyte chemoattractant protein-1 (MCP-1) were quantified using quantitative real-time polymerase chain reaction (PCR). The protein expressions of VCAM-1, MCP-1, I-kappaBalpha, NF-kappaB, p-JNK and p-p38 MAPK were measured using western blotting analysis. Our results showed that in HUVECs, salusin-beta could up-regulate the levels of IL-6, TNF-alpha, VCAM-1 and MCP-1, promote I-kappaBalpha degradation and NF-kappaB activation, and increase the phosphorylation of JNK and p38 MAPK. These effects could be inhibited by p38 MAPK inhibitor SB203580 and/or JNK inhibitor SP600125. In contrast, salusin-alpha could selectively decrease VCAM-1 protein, but did not show any effect on the expressions of VCAM-1 mRNA, TNF-alpha, IL-6, MCP-1, I-kappaBalpha, NF-kappaB, p-JNK or p-p38 MAPK. CONCLUSION: Salusin-beta was able to promote inflammatory responses in HUVECs via the p38 MAPK-NF-kappaB and JNK-NF-kappaB pathways. In contrast, salusin-alpha failed to show any significant effects on the inflammatory responses in HUVECs. These results provide further insight into the mechanisms behind salusins in vascular inflammation and offer a potential target for the prevention and treatment of atherosclerosis. FAU - Zhou, Cheng-Hua AU - Zhou CH AD - School of Pharmacy, Xuzhou Medical College, Xuzhou, China. FAU - Pan, Jin AU - Pan J AD - School of Pharmacy, Xuzhou Medical College, Xuzhou, China. FAU - Huang, He AU - Huang H AD - Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical College, Xuzhou, China. FAU - Zhu, Yangzi AU - Zhu Y AD - Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical College, Xuzhou, China. FAU - Zhang, Mingxing AU - Zhang M AD - School of Pharmacy, Xuzhou Medical College, Xuzhou, China. FAU - Liu, Lian AU - Liu L AD - School of Pharmacy, Xuzhou Medical College, Xuzhou, China. FAU - Wu, Yuqing AU - Wu Y AD - Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical College, Xuzhou, China; Department of Anesthetic Pharmacology, Xuzhou Medical College, Xuzhou, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140911 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (IL6 protein, human) RN - 0 (Inflammation Mediators) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Interleukin-6) RN - 0 (NF-kappa B) RN - 0 (TNF protein, human) RN - 0 (TOR2A protein, human) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Vascular Cell Adhesion Molecule-1) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Human Umbilical Vein Endothelial Cells/*immunology/metabolism MH - Humans MH - Inflammation Mediators/metabolism MH - Intercellular Signaling Peptides and Proteins/*physiology MH - Interleukin-6/metabolism MH - JNK Mitogen-Activated Protein Kinases/metabolism MH - *MAP Kinase Signaling System MH - NF-kappa B/metabolism MH - Tumor Necrosis Factor-alpha/metabolism MH - Vascular Cell Adhesion Molecule-1/metabolism MH - Vasculitis/metabolism MH - p38 Mitogen-Activated Protein Kinases/metabolism PMC - PMC4161457 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2014/09/12 06:00 MHDA- 2015/10/27 06:00 PMCR- 2014/09/11 CRDT- 2014/09/12 06:00 PHST- 2014/04/29 00:00 [received] PHST- 2014/08/14 00:00 [accepted] PHST- 2014/09/12 06:00 [entrez] PHST- 2014/09/12 06:00 [pubmed] PHST- 2015/10/27 06:00 [medline] PHST- 2014/09/11 00:00 [pmc-release] AID - PONE-D-14-19243 [pii] AID - 10.1371/journal.pone.0107555 [doi] PST - epublish SO - PLoS One. 2014 Sep 11;9(9):e107555. doi: 10.1371/journal.pone.0107555. eCollection 2014.