Background:In this study, we used immune repertoire (IR) sequencing technology to
profile the diversity of peripheral blood T cell receptors and used transcriptomics to profile the
gene expression of peripheral blood neutrophil mRNA in patients with mild-moderate knee osteoarthritis
(KOA) before and after electroacupuncture (EA) treatment.Methods:An 8-week intervention with EA was performed on 3 subjects with KOA. IR sequencing
of complementarity determining region 3 (CDR3) was performed using RNA extracted from
peripheral blood T cells of KOA subjects prior to and at the end of the intervention, as well as
healthy volunteers (controls) who matched the subjects in sex and age. Neutrophils were extracted
from the plasma of healthy individuals, pretreatment patients, and posttreatment patients for
further transcriptome sequencing.Results:The D50, diversity index (DI), and Shannon entropy values of circulatory T-cells were
significantly lower in pretreatment KOA patients compared to healthy controls. Posttreatment
KOA samples displayed significant decreases in serum proinflammatory factors, IL-8 and IL-18
(P < 0.01), as well as a substantial reduction in serum matrix MMP-3 and MMP-13 (P < 0.01, P
< 0.05). Transcriptome analysis revealed that the expression of CXCL2, IRF8, and PEAR1 (P <
0.05) was significantly higher in patients before the treatment than in the healthy population and
was significantly down-regulated after the treatment. In contrast, the expression of SMPD3 (P <
0.05) showed the opposite trend.Conclusion:EA may alleviate KOA by rebalancing T-cell homeostasis and improving systemic
inflammation. At the same time, EA treatment can significantly enhance TCR diversity, reduce
levels of proinflammatory factors, and increase levels of anti-inflammatory factors, thereby
achieving therapeutic effects.