摘要
Objective:Regulatory T cells(Treg) suppress immune responses in patients with cancer.Surgery is the most effective therapeutic strategy for ovarian cancer(OC).However,the interplay between the Treg population and surgical resection remains unclear.The aim of this study is to measure the alterations of the Treg population in the peripheral blood of OC patients undergoing surgery.Methods:61 patients with OC who received no prior treatment were enrolled in the study.We investigated CD4~+CD25~+,CD4~+CD25~+Foxp3~+,CD8~+CD28,and CD8~+Foxp3~+ Treg cells in patients with OC and their postoperative changes using flow cytometry.Proliferation assays was performed to explore the function of T cells in OC patients,benign ovarian tumors(BOT) patients and healthy controls(HC).Results:Treg percentages were significantly higher in patients with OC than those in BOT and healthy controls.Higherpercentages of Tregs were found in patients with stage III/IV than stage I/II OC.Proliferation assays proved that the T cells isolated from OC patients had the functional characteristics of Treg cells.Treg percentages were significantly decreased postoperatively.The postoperative Treg percentages in patients with stage I/II OC were not significantly different from those in BOT patients,while postoperative Treg percentages in patients with stage III/IV OC remained higher than those in BOT patients.Treg percentages were markedly lower on postoperative day(POD) 3 than preoperatively.They increased slightly after 7 days,but remained lower than preoperative levels.Treg percentages then continued to decline from POD7 to POD30.Conclusion:The study confirmed an elevated level of CD4~+CD25~+,CD4~+CD25~+Foxp3~+,CD8~+CD28~+,and CD8~+Foxp3~+ Treg cells in patients with OC,even in the early stages of the disease.Surgery is able to partially revert the immunosuppressive state of patients with cancer because diminishment of the Treg level was found in patients with OC after surgery.Our research suggests that precise evaluation of the Treg
Objective:Regulatory T cells(Treg) suppress immune responses in patients with cancer.Surgery is the most effective therapeutic strategy for ovarian cancer(OC).However,the interplay between the Treg population and surgical resection remains unclear.The aim of this study is to measure the alterations of the Treg population in the peripheral blood of OC patients undergoing surgery.Methods:61 patients with OC who received no prior treatment were enrolled in the study.We investigated CD4~+CD25~+,CD4~+CD25~+Foxp3~+,CD8~+CD28,and CD8~+Foxp3~+ Treg cells in patients with OC and their postoperative changes using flow cytometry.Proliferation assays was performed to explore the function of T cells in OC patients,benign ovarian tumors(BOT) patients and healthy controls(HC).Results:Treg percentages were significantly higher in patients with OC than those in BOT and healthy controls.Higherpercentages of Tregs were found in patients with stage III/IV than stage I/II OC.Proliferation assays proved that the T cells isolated from OC patients had the functional characteristics of Treg cells.Treg percentages were significantly decreased postoperatively.The postoperative Treg percentages in patients with stage I/II OC were not significantly different from those in BOT patients,while postoperative Treg percentages in patients with stage III/IV OC remained higher than those in BOT patients.Treg percentages were markedly lower on postoperative day(POD) 3 than preoperatively.They increased slightly after 7 days,but remained lower than preoperative levels.Treg percentages then continued to decline from POD7 to POD30.Conclusion:The study confirmed an elevated level of CD4~+CD25~+,CD4~+CD25~+Foxp3~+,CD8~+CD28~+,and CD8~+Foxp3~+ Treg cells in patients with OC,even in the early stages of the disease.Surgery is able to partially revert the immunosuppressive state of patients with cancer because diminishment of the Treg level was found in patients with OC after surgery.Our research suggests that precise evaluation of the Treg
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