Systemic sclerosis & Raynaud's

Human dermal fibroblast-derived exosomes induce macrophage activation in systemic sclerosis

Rheumatology (Oxford)Published Mechanistic study

Authors' conclusion

In this work, we demonstrate for the first time that human SSc dermal fibroblasts mediate macrophage activation through exosomes.

Study context

Population
Skin-biopsy fibroblasts from SSc patients and healthy age and gender-matched controls; human donor-derived macrophages
Participants
7 vs 6
Comparison
Macrophages cultured with exosomes from SSc dermal fibroblasts vs exosomes from healthy control fibroblasts
  • SScn = 7
  • Healthy controln = 6reference
Outcome
Macrophage activation (surface markers and cytokine secretion) by SSc vs healthy control dermal fibroblast-derived exosomes
Follow-up
48 h
Methodological detailsin vitro, age and gender-matched controls, Transwell co-culture
  • In vitro
  • Age and gender-matched controls
  • Transwell co-culture

Main finding

As reported in the abstract

Macrophages activated with SSc fibroblast-derived exosomes upregulated surface CD163, CD206, MHC Class II and CD16 vs healthy control (n = 7)
P < 0.05
Macrophages activated with SSc fibroblast-derived exosomes secreted increased IL-6, IL-10, IL-12p40 and TNF vs healthy control (n = 7)
P < 0.05

Original publication

Human dermal fibroblast-derived exosomes induce macrophage activation in systemic sclerosis. Rheumatology (Oxford). Published 10 August 2022. doi:10.1093/rheumatology/keac453

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.