Transcriptomics

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Transcriptome analysis of CCR9+, CXCR5+ and CCR9-CXCR5- Th cells in primary Sjögren's syndrome (pSS) patients and healthy controls (HC)


ABSTRACT: CCR9+ Tfh-like pathogenic T helper (Th) cells are elevated in patients with primary Sjögren’s syndrome (pSS) and indicated to play a role in pSS immunopathology. CCR9+, CXCR5+ and CCR9-CXCR5- (double negative, DN) Th cells from blood of 7 healthy controls (HC) and 7 pSS patients were FACS sorted and RNA sequencing was performed. Our aim is to delineate the CCR9+ Th cell-specific transcriptome to study the molecular dysregulation of these cells in pSS patients. Transcriptomic analysis of circulating CCR9+ Th cells reveals CCR9-specific pathways involved in effector T cell function, equally expressed in pSS patients and HC. Given the increased numbers of CCR9+ Th cells in the blood and inflamed glands of pSS patients and presence of inflammatory stimuli to activate these cells this suggests that CCR9-specific functions, such as cell recruitment upon CCL5 secretion, could significantly contribute to immunopathology in pSS.

ORGANISM(S): Homo sapiens

PROVIDER: GSE173635 | GEO | 2021/07/26

REPOSITORIES: GEO

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