[Preliminary study on the expression of CD4⁺CD25⁺Tregs and Foxp3 in peripheral blood of patients with head and neck squamous cell carcinoma].

Objective:This paper discusses the expression and significance of CD4⁺CD25⁺ Tregs and Foxp3 in peripheral blood of patients with head and neck squamous cell carcinoma. Method:We have collected 40 cases of head and neck squamous cell carcinoma patients with newly diagnosed or relapse after treatment, all of them underwent surgery, 39 males and 1 females, aged 41-79 years, in our department from January 2014 to December 2015. At the same time, 10 healthy volunteers are enrolled as control group. 2 ml peripheral blood has been detected by flow cytometry, and the ratio of CD4⁺CD25⁺/CD4⁺ and CD4⁺CD25⁺Fxop3⁺/CD4⁺ are calculated, respectively. SPSS 23.0 is used for statistical analysis. Result:CD4⁺CD25⁺ Tregs is highly expressed in head and neck tumors, compared with that in the healthy control, and the difference is statistically significant (P<0.01). There is significant difference between the early and late stage (P<0.05). The positive rate of Foxp3+ is higher in CD4⁺CD25⁺ Tregs positive cells than in control group (P<0.01). The difference of positive rate between late stage and early stage head and neck tumors is statistically significant (P<0.05). There is a significant positive correlation between CD4⁺CD25⁺ Tregs and Foxp3 (r=0.95). Conclusion:CD4⁺CD25⁺ Tregs and Foxp3 are highly expressed in the peripheral blood of patients with head and neck squamous cell carcinoma. Through the inhibition of the immune system in patients with head and neck squamous cell carcinoma, the development of carcinoma were promoted.