CD4+ T Cell-Fibroblast Crosstalk Exacerbates Autoimmunity in Primary Sjögren Disease
A recent study published in Nature Communications identifies a specific cellular mechanism driving chronic inflammation in primary Sjögren disease (pSjD). Researchers utilized a mouse model to demonstrate that a subset of CD153+ CD4+ T cells interacts with CD30+ tissue-resident fibroblasts, creating a pathogenic axis that exacerbates autoimmunity. This interaction promotes fibroblast proliferation and the secretion of chemokines, which further drives immune cell infiltration and amplifies the autoimmune response. The study highlights that targeting this CD153-CD30 axis, either by deleting CD153 in T cells or neutralizing fibroblast-derived chemokines, significantly reduces lymphocytic infiltration and halts disease pathology in mice. Furthermore, the researchers found that the CD153-CD30 axis positively correlates with disease severity in human patients. These findings provide critical insights into the cellular interactions perpetuating pSjD and suggest that this axis represents a promising, therapeutically targetable pathway for alleviating autoimmune-like pathology and chronic inflammation in affected individuals.
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CD4+ T Cell-Fibroblast Crosstalk Exacerbates Autoimmunity in Primary Sjögren Disease
A recent study published in Nature Communications identifies a specific cellular mechanism driving chronic inflammation in primary Sjögren disease (pSjD). Researchers utilized a mouse model to demonstrate that a subset of CD153+ CD4+ T cells interacts with CD30+ tissue-resident fibroblasts, creating a pathogenic axis that exacerbates autoimmunity. This interaction promotes fibroblast proliferation and the secretion of chemokines, which further drives immune cell infiltration and amplifies the autoimmune response. The study highlights that targeting this CD153-CD30 axis, either by deleting CD153 in T cells or neutralizing fibroblast-derived chemokines, significantly reduces lymphocytic infiltration and halts disease pathology in mice. Furthermore, the researchers found that the CD153-CD30 axis positively correlates with disease severity in human patients. These findings provide critical insights into the cellular interactions perpetuating pSjD and suggest that this axis represents a promising, therapeutically targetable pathway for alleviating autoimmune-like pathology and chronic inflammation in affected individuals.
Nature Communications