Review article: mitogen-activated protein kinases in chronic intestinal inflammation - targeting ancient pathways to

G H Waetzig1, S Schreiber

  • 1Mucosal Immunology Research Group, Department of General Internal Medicine, University Hospital Schleswig-Holstein, Kiel, Germany. g.waetzig@conaris.de

Insights

Mitogen-activated protein kinase pathways are key regulators of inflammation. Targeting these pathways offers a promising strategy for treating inflammatory bowel diseases with improved efficacy and reduced side effects.

Area of Science:

  • Immunology
  • Molecular Biology
  • Gastroenterology

Background:

  • Chronic inflammatory disorders, like inflammatory bowel diseases (IBD), are often treated with broad-acting anti-inflammatory drugs.
  • New strategies focus on modulating intercellular and intracellular inflammatory signaling pathways to enhance treatment efficacy and minimize side effects.

Purpose of the Study:

  • To review the specificity and interconnection of mitogen-activated protein kinase (MAPK) pathways.
  • To explore the function of MAPK pathways in the gut immune system.
  • To summarize current and ongoing research on the role of MAPKs in IBD.

Main Methods:

  • Literature review of published and ongoing studies.
  • Analysis of MAPK pathway functions in cellular processes and immune responses.
  • Examination of MAPK pathway involvement in inflammatory signaling.

Main Results:

  • MAPK pathways are highly conserved and regulate critical defense mechanisms, including stress responses and inflammation.
  • These pathways play a significant role in the gut immune system.
  • Research indicates a substantial involvement of MAPKs in the pathogenesis of IBD.

Conclusions:

  • MAPK pathways are crucial targets for therapeutic intervention in inflammatory disorders.
  • The development of MAPK inhibitors represents a successful translation of basic research into clinical applications for IBD therapy.

Related Concept Videos

MAPK Signaling Cascades01:07

MAPK Signaling Cascades

Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
Inflammatory Bowel Disease III: Crohn's Disease01:25

Inflammatory Bowel Disease III: Crohn's Disease

Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...
Inflammatory Bowel Disease II: Ulcerative Colitis01:20

Inflammatory Bowel Disease II: Ulcerative Colitis

Ulcerative colitis is a chronic inflammatory disorder of the colon characterized by continuous mucosal inflammation that typically begins in the rectum and extends proximally in a uniform pattern. Its pathogenesis involves a complex interplay of genetic predisposition, immune dysregulation, and environmental influences. These factors converge to impair the colon’s epithelial defenses and promote an exaggerated inflammatory response against luminal contents.Breakdown of the Mucosal BarrierA...
Inflammatory Bowel Disease IV: Pharmacological Management01:29

Inflammatory Bowel Disease IV: Pharmacological Management

Upon diagnosis, managing Inflammatory Bowel Disease (IBD) involves addressing several crucial aspects. The primary goals include resting the bowel, correcting malnutrition, and providing symptomatic relief. Resting the bowel may consist of medications to reduce inflammation and promote healing. Correcting malnutrition is essential, often requiring dietary adjustments and nutritional supplements. Symptomatic relief aims to ease pain, diarrhea, and other discomforts in IBD.
Pharmacologic...
Role Of Notch Signalling In Intestinal Stem Cell Renewal01:12

Role Of Notch Signalling In Intestinal Stem Cell Renewal

Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...