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An updated review of the immunological mechanisms of keloid scars

Journal

FRONTIERS IN IMMUNOLOGY
Volume 14, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2023.1117630

Keywords

keloid; scar; immunity; macrophages; T lymphocytes; cytokines; signal transduction

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Keloid is a unique type of disfiguring pathological scarring in human skin that is characterized by excessive collagen deposition. Immune cell infiltration is a common feature of normal and pathological tissue repair, but the immunopathological mechanisms of keloid remain unclear. Recent studies have highlighted the crucial role of innate and adaptive immunity in regulating the abnormal behavior of keloid fibroblasts. Novel therapeutics targeting immune pathways have shown varying efficacy in restoring regulation of the immune microenvironment in keloid.
Keloid is a type of disfiguring pathological scarring unique to human skin. The disorder is characterized by excessive collagen deposition. Immune cell infiltration is a hallmark of both normal and pathological tissue repair. However, the immunopathological mechanisms of keloid remain unclear. Recent studies have uncovered the pivotal role of both innate and adaptive immunity in modulating the aberrant behavior of keloid fibroblasts. Several novel therapeutics attempting to restore regulation of the immune microenvironment have shown variable efficacy. We review the current understanding of keloid immunopathogenesis and highlight the potential roles of immune pathway-specific therapeutics.

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