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Alterations of ROS pathways in scleroderma begin at stem cell level

M Orciani1, S Svegliati, S Gorbi

  • 1Department of Clinical and Molecular Sciences and Histology, Università Politecnica delle Marche, Ancona, Italy.

Journal of Biological Regulators and Homeostatic Agents
|March 16, 2013
PubMed

Insights

Mesenchymal stem cells (MSCs) from scleroderma patients maintain antioxidant defenses against oxidative stress, unlike scleroderma fibroblasts. This suggests MSCs could be a potential therapy for scleroderma, a fibrotic autoimmune disease.

Area of Science:

  • Immunology
  • Dermatology
  • Cell Biology

Background:

  • Scleroderma is a severe autoimmune disease causing skin fibrosis and vascular issues.
  • Current scleroderma therapies are limited, highlighting the need for novel treatments.
  • Oxidative stress, marked by reactive oxygen species (ROS), is crucial in scleroderma pathogenesis.

Purpose of the Study:

  • To investigate the role and function of mesenchymal stem cells (MSCs) in scleroderma.
  • To compare ROS production and antioxidant defenses in MSCs and fibroblasts from scleroderma patients versus healthy individuals.
  • To analyze the impact of the scleroderma environment on MSCs and fibroblasts.

Main Methods:

  • Isolation and characterization of MSCs and fibroblasts from scleroderma and healthy skin.
  • Measurement of reactive oxygen species (ROS) production and antioxidant capacity.
  • Analysis of ERK1/2 expression and response to platelet-derived growth factor (PDGF) stimulation.
  • Comparison of cellular responses between MSCs and fibroblasts.

Main Results:

  • Scleroderma-associated oxidative stress affects MSCs, but they retain the ability to enhance antioxidant defenses.
  • Scleroderma fibroblasts exhibit impaired antioxidant mechanisms, leading to increased ROS.
  • Fibroblasts show activation of pathways triggered by autoantibodies against PDGFR in scleroderma patients.

Conclusions:

  • MSCs demonstrate resilience to the scleroderma pro-oxidant environment, maintaining functional antioxidant capacity.
  • Scleroderma fibroblasts display a breakdown in oxidative stress management, contributing to disease progression.
  • These findings suggest MSCs hold therapeutic potential for managing oxidative stress in scleroderma.

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