Investigative Ophthalmology & Visual Science · 10 authors, 4 centres
This summary was generated by AI from a single paper. It has not been reviewed by a clinician and is not clinical advice. Verify against the source before acting on it.
Using a desiccating stress mouse model and next-generation sequencing, this study characterized the αβ T-cell receptor repertoire in the conjunctiva and found significantly increased TCR diversity and disease-specific clonotypes in dry eye, which were reversed by glucocorticoid treatment.
T-cell activation and proliferation in the conjunctiva and cervical lymph nodes were assessed by flow cytometry, and αβ TCR repertoire of the conjunctiva was profiled by next-generation sequencing. The αβ TCR diversity was significantly higher in the dry eye group than controls, with increased CDR3 amino acid length, marked V and J gene segment usage, extensive V(D)J recombination, and distinct CDR3 amino acid motifs. Several T-cell clonotypes were uniquely identified in dry eye. Limitations include the absence of human patient samples, a single dry eye model classification, and an unresolved mechanism of T-cell subset activation. Findings suggest disease-specific TCR signatures may serve as potential predictive biomarkers.
