Cited by 370Protein Tyrosine PhosphatasesSepsis Diagnosis and TreatmentImmune Response and Inflammation

MAP kinase phosphatase 1 controls innate immune responses and suppresses endotoxic shock

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Zhao, Qun, Wang, Xianxi, Nelin, Leif D., Yao, Yongxue, Matta, Ranyia, Manson, Mary E., Baliga, Reshma S., Meng, Xiaomei +4 more·2006·The Journal of Experimental Medicine

Abstract

Septic shock is a leading cause of morbidity and mortality. However, genetic factors predisposing to septic shock are not fully understood. Excessive production of proinflammatory cytokines, particularly tumor necrosis factor (TNF)-alpha, and the resultant severe hypotension play a central role in the pathophysiological process. Mitogen-activated protein (MAP) kinase cascades are crucial in the biosynthesis of proinflammatory cytokines. MAP kinase phosphatase (MKP)-1 is an archetypal member of the dual specificity protein phosphatase family that dephosphorylates MAP kinase. Thus, we hypothesize that knockout of the Mkp-1 gene results in prolonged MAP kinase activation, augmented cytokine production, and increased susceptibility to endotoxic shock. Here, we show that knockout of Mkp-1 substantially sensitizes mice to endotoxic shock induced by lipopolysaccharide (LPS) challenge. We demonstrate that upon LPS challenge, Mkp-1-/- cells exhibit prolonged p38 and c-Jun NH2-terminal kinase activation as well as enhanced TNF-alpha and interleukin (IL)-6 production compared with wild-type cells. After LPS challenge, Mkp-1 knockout mice produce dramatically more TNF-alpha, IL-6, and IL-10 than do wild-type mice. Consequently, Mkp-1 knockout mice develop severe hypotension and multiple organ failure, and exhibit a remarkable increase in mortality. Our studies demonstrate that MKP-1 is a pivotal feedback control regulator of the innate immune responses and plays a critical role in suppressing endotoxin shock.

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Crossref · 10.1084/jem.20051794

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  • GR-mediated transactivation typically induces expression of signaling inhibitors such as IκBα, MPK-1, IL-10, Annexin A1, GILZ, and SOCS proteins, which interfere with immune signaling pathways such as those triggered by Toll-like receptors.

    “GR-mediated transactivation typically induces the expression of potent signaling inhibitors (e.g., IκBα, MPK-1, IL-10, Annexin A1, GILZ, and SOCS proteins), which strongly interfere with salient immune signaling pathways such as those triggered by the Toll-like receptors (TLR) (82–85).”

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Authors
Zhao, Q., Wang, X., Nelin, L. D., Yao, Y., Matta, R., Manson, M. E., Baliga, R. S., Meng, X., Smith, C. V., Bauer, J. A., Chang, C.-H., & Liu, Y.
Affiliations
  • 1Children's Research Institute, Columbus Children's Hospital, Department of Pediatrics,
  • Indiana University Indianapolis (US)
  • The Ohio State University (US)
Venue
The Journal of Experimental Medicine
Published
2005-12-27
Volume
203
Issue
1
Pages
131-140
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2169259339
Cited by
370
References
49
Citations by year
2026: 1 · 2025: 5 · 2024: 5 · 2023: 4 · 2022: 8 · 2021: 11 · 2020: 8 · 2019: 9 · 2018: 6 · 2017: 16 · 2016: 16 · 2015: 29 · 2014: 18 · 2013: 16 · 2012: 37
FWCI
10.33
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • National Heart, Lung, and Blood Institute (HL063067, R01HL063067)
  • National Institute of General Medical Sciences (R01GM044263, GM044263)
  • National Institute of Allergy and Infectious Diseases (AI045811, R01AI057798, AI057798, R21AI057798, R01AI045811)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Health Sciences › Medicine › Epidemiology › Sepsis Diagnosis and Treatment
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
MAP kinase phosphatase-1, MKP-1, endotoxic shock, septic shock, lipopolysaccharide, innate immunity, p38 MAPK, c-Jun N-terminal kinase, TNF-α, interleukin-6, IL-10, hypotension, multiple organ failure, cytokine production
MeSH terms
Animals, Cells, Cultured, Dendritic Cells, Immunity, Innate, Lipopolysaccharides, Mice, Transgenic, Phosphoprotein Phosphatases, Shock, Septic, Spleen, Cytokines, Protein Tyrosine Phosphatases, Macrophages, Peritoneal, Immediate-Early Proteins, Cell Cycle Proteins, Mitogen-Activated Protein Kinases, Mice, Dual Specificity Phosphatase 1, Protein Phosphatase 1

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