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Review
. 2023 Sep;32(9):1326-1333.
doi: 10.1111/exd.14858. Epub 2023 Jun 30.

The immune function of dermal fibroblasts in skin defence against pathogens

Jianing Wang  1 , Zhimin Duan  1 , Xu Chen  1   2 , Min Li  1   2
Affiliations
Review

The immune function of dermal fibroblasts in skin defence against pathogens

Jianing Wang et al. Exp Dermatol. 2023 Sep.

Abstract

Dermal fibroblasts are the main resident cells of the dermis. They have several significant functions related to wound healing, extracellular matrix production and hair cycling. Dermal fibroblasts can also act as sentinels in defence against infection. They express pattern recognition receptors such as toll-like receptors to sense pathogen components, followed by the synthesis of pro-inflammatory cytokines (including IL-6, IFN-β and TNF-α), chemokines (such as IL-8 and CXCL1) and antimicrobial peptides. Dermal fibroblasts also secrete other molecules-like growth factors and matrix metalloproteinases to benefit tissue repair from infection. Crosstalk between dermal fibroblasts and immune cells may amplify the immune response against infection. Moreover, the transition of a certain adipogenic fibroblasts to adipocytes protects skin from bacterial infection. Together, we discuss the role of dermal fibroblasts in the war against pathogens in this review. Dermal fibroblasts have important immune functions in anti-infection immunity, which should not be overlooked.

Keywords: dermal fibroblasts; infection; innate immune; skin.

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