Data for "Pemphigus vulgaris autoantibodies induce an ER stress response"

Desmosomes are intercellular junctions that mediate cell-cell adhesion and are essential for maintaining tissue integrity. Pemphigus vulgaris (PV) is an autoimmune epidermal blistering disease caused by autoantibodies (IgG) targeting desmoglein 3 (Dsg3), a desmosomal cadherin. PV autoantibodies cause desmosome disassembly and loss of cell-cell adhesion, but the molecular signaling pathways that regulate these processes are not fully understood. Using high- resolution time-lapse imaging of living keratinocytes, we found that ER tubules make frequent and persistent contacts with internalizing Dsg3 puncta in keratinocytes treated with PV patient IgG. Biochemical experiments demonstrated that PV IgG activated ER stress signaling pathways, including both IRE1⍺ and PERK pathways, in cultured keratinocytes. Further, ER stress transcripts were upregulated in PV patient skin. Pharmacological inhibition of ER stress protected against PV IgG-induced desmosome disruption and loss of keratinocyte cell-cell adhesion, suggesting that ER stress may be an important pathomechanism and therapeutically targetable pathway for PV treatment. These data support a model in which desmosome adhesion is integrated with ER function to serve as a cell adhesion stress sensor that is activated in blistering skin disease.

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Hoffman, Coryn; Bharathan, Navaneetha Krishnan; Kowalczyk, Andrew; Giang, William; Shibata, Yoshitaka (2024). Data for "Pemphigus vulgaris autoantibodies induce an ER stress response" [Data set]. Scholarsphere.

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Work Title Data for "Pemphigus vulgaris autoantibodies induce an ER stress response"
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Open Access
Creators
  1. Coryn Hoffman
  2. Navaneetha Krishnan Bharathan
  3. Andrew Kowalczyk
  4. William Giang
  5. Yoshitaka (Joey) Shibata
License CC BY-NC 4.0 (Attribution-NonCommercial)
Work Type Dataset
Publication Date 2024
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Deposited July 18, 2024

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Version 1
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  • Updated Description, Publication Date Show Changes
    Description
    • Desmosomes are intercellular junctions that mediate cell-cell adhesion and are essential for maintaining tissue integrity. Pemphigus vulgaris (PV) is an autoimmune epidermal blistering disease caused by autoantibodies (IgG) targeting desmoglein 3 (Dsg3), a desmosomal cadherin. PV autoantibodies cause desmosome disassembly and loss of cell-cell adhesion, but the molecular signaling pathways that regulate these processes are not fully understood. Using high- resolution time-lapse imaging of living keratinocytes, we found that ER tubules make frequent and persistent contacts with internalizing Dsg3 puncta in keratinocytes treated with PV patient IgG. Biochemical experiments demonstrated that PV IgG activated ER stress signaling pathways, including both IRE1⍺ and PERK pathways, in cultured keratinocytes. Further, ER stress transcripts were upregulated in PV patient skin. Pharmacological inhibition of ER stress protected against PV IgG-induced desmosome disruption and loss of keratinocyte cell-cell adhesion, suggesting that ER stress may be an important pathomechanism and therapeutically targetable pathway for PV treatment. These data support a model in which desmosome adhesion is integrated with ER function to serve as a cell adhesion stress sensor that is activated in blistering skin disease.
    Publication Date
    • 2024
  • Added Creator Coryn Hoffman
  • Added Creator Navaneetha Krishnan Bharathan
  • Added Creator Andrew Kowalczyk
  • Added Creator William Giang
  • Added Creator Yoshitaka (Joey) Shibata
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    License
    • https://creativecommons.org/licenses/by-nc/4.0/
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    Related URLs
    • https://doi.org/10.1101/2024.08.22.608849
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    • Pemphigus vulgaris autoantibodies induce an ER stress response
    • Data for "Pemphigus vulgaris autoantibodies induce an ER stress response"

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    • Pemphigus vulgaris autoantibodies induce an ER stress response
    • Data for "Pemphigus vulgaris autoantibodies induce an ER stress response"
  • Updated Related URLs Show Changes
    Related URLs
    • https://doi.org/10.1101/2024.08.22.608849