Cited by 60Atherosclerosis and Cardiovascular DiseasesAdipokines, Inflammation, and Metabolic DiseasesCell Adhesion Molecules Research

LECT2 induces atherosclerotic inflammatory reaction via CD209 receptor-mediated JNK phosphorylation in human endothelial cells

Hwang, Hwan-Jin, Jung, Tae Woo, Hong, Ho Cheol, Seo, Ji A., Kim, Sin Gon, Kim, Nan Hee, Choi, Kyung Mook, Choi, Dong Seop +2 more·2015·Metabolism

Abstract

Objective Leukocyte cell-derived chemotaxin 2 (LECT2) is a recently discovered novel hepatokine, leading to skeletal muscle insulin resistance by activating c-Jun N-terminal kinase (JNK). However, its role in atherosclerotic inflammatory reactions has not been examined. Therefore, we investigated the function of LECT2 on the expression of vascular adhesion molecules and inflammatory cytokines in human endothelial cells.Methods Human umbilical vein endothelial cells (HUVECs) and THP-1 cells were treated with various doses of LECT2 and the functions and signaling pathways were analyzed through Western blot and quantitative real-time PCR (qPCR).Results The level of phosphorylated c-Jun N-terminal kinases (JNK) was significantly increased by LECT2 treatment in HUVECs and THP-1 cells, an effect that was not seen in cells treated with CD209 siRNA, a known LECT2 receptor. LECT2 treatment efficiently increased the expression of intercellular adhesion molecule-1 (ICAM-1) and pro-inflammatory cytokines tumor necrosis factor α (TNFα), monocyte chemo-attractant protein-1 (MCP-1), and interleukin-1β (IL-1β) in HUVECs and THP-1 cells. However, all these reactions were significantly reduced in response to treatment with JNK inhibitor. Furthermore, LECT2 treatment significantly exacerbated the adhesion of monocytic cells to human endothelial cells, which was also efficiently attenuated by JNK inhibitor.Conclusions LECT2 significantly induced adhesion molecules and pro-inflammatory cytokines in HUVECs via CD209-mediated JNK phosphorylation, suggesting that liver-derived novel hepatokine, LECT2, might directly mediate in the atherosclerotic inflammatory reactions in human endothelial cells.

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Crossref · 10.1016/j.metabol.2015.06.001

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  • LECT2 alters insulin signaling through the JNK pathway in myocytes, and expression of LECT2 in liver is negatively regulated by AMPK.

    “LECT2 alters insulin signaling through the JNK pathway in myocytes, and the expression of LECT2 in the liver is negatively regulated by the energy-depletion sensor AMPK [239,248,249].”

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Authors
Hwang, H.-J., Jung, T. W., Hong, H. C., Seo, J. A., Kim, S. G., Kim, N. H., Choi, K. M., Choi, D. S., Baik, S. H., & Yoo, H. J.
Affiliations
Korea University (KR)
Corresponding author
Yoo, Hye Jin
Venue
Metabolism
Publisher
Elsevier BV
Published
2015-09
Volume
64
Issue
9
Pages
1175-1182
ISSN
0026-0495 (ISSN-L)
OpenAlex
W1891585568
Cited by
60
References
27
Citations by year
2026: 2 · 2025: 3 · 2024: 5 · 2023: 9 · 2022: 9 · 2021: 7 · 2020: 8 · 2019: 4 · 2018: 3 · 2017: 5 · 2016: 5
FWCI
2.13
Type
journal article
Language
en
Open access
closed
Locations
  • Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Korea University Guro Hospital (O1500061)
  • National Research Foundation of Korea
  • Ministry of Education, Science and Technology (2012R1A1A1005257)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
Keywords
LECT2, hepatokines, atherosclerosis, endothelial inflammation, JNK phosphorylation, ICAM-1, inflammatory cytokines, TNF-α, MCP-1, IL-1β, endothelial cells, JNK inhibitor
MeSH terms
DC-Specific ICAM-3 Grabbing Nonintegrin, Humans, Inflammation, Phosphorylation, Receptors, Cell Surface, Cell Adhesion Molecules, Cytokines, RNA, Small Interfering, Intercellular Signaling Peptides and Proteins, Lectins, C-Type, Endothelial Cells, Protein Kinase Inhibitors, JNK Mitogen-Activated Protein Kinases, Atherosclerosis, Gene Knockdown Techniques, Human Umbilical Vein Endothelial Cells

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