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Related Experiment Video

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Granulocyte-dependent Autoantibody-induced Skin Blistering
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Signalling pathways in pemphigus vulgaris.

Xiaoguang Li1, Norito Ishii, Chika Ohata

  • 1Department of Dermatology, Kurume University School of Medicine and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan.

Experimental Dermatology
|January 7, 2014
PubMed
Summary

Pemphigus vulgaris involves autoantibodies targeting desmoglein 3 (Dsg3). This study reveals complex interactions between epidermal growth factor receptor (EGFR) signaling, p38 mitogen-activated protein kinase (p38MAPK), and c-Myc in disease pathology.

Keywords:
acantholysispemphigus vulgarissignalling pathway

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Area of Science:

  • Dermatology
  • Molecular Biology
  • Cell Signaling

Background:

  • Pemphigus vulgaris (PV) is an autoimmune blistering disease characterized by acantholysis.
  • Autoantibodies against desmoglein 3 (Dsg3) are the primary cause of acantholysis in PV.
  • Signaling pathways involved in acantholysis are crucial for understanding PV pathogenesis.

Purpose of the Study:

  • To investigate the role of epidermal growth factor receptor (EGFR) signaling in pemphigus vulgaris.
  • To elucidate the relationship between EGFR, p38 mitogen-activated protein kinase (p38MAPK), and c-Myc in PV-associated acantholysis.

Main Methods:

  • Utilized in vivo and in vitro experimental models of pemphigus vulgaris.
  • Administered epidermal growth factor receptor (EGFR) inhibitors to assess their effects.
  • Monitored the activity of p38 mitogen-activated protein kinase (p38MAPK) and c-Myc.

Main Results:

  • EGFR signaling was activated in experimental models of pemphigus vulgaris.
  • EGFR inhibitors showed a linear suppression of p38MAPK activity.
  • EGFR inhibitors exhibited a non-linear, V-shaped suppression of c-Myc activity and acantholysis.

Conclusions:

  • Complex interplay exists among EGFR, p38MAPK, and c-Myc in pemphigus vulgaris.
  • These signaling pathways are critical components of PV pathology.
  • Findings suggest novel therapeutic targets for pemphigus vulgaris.