Enumeration and Function Analysis of Treg Cells in Peripheral Blood of HCC Patients Before and After Ablation Therapy

First Affiliated Hospital, Sun Yat-Sen University20 enrolled

Overview

The purpose of this study is to determine the enumeration and function changes of regulatory t cells in peripheral blood of hepatocellular carcinoma patients before and 1 week, 4 weeks after ablation therapy.

Regulatory T cells，which are also called Treg cells，play an important role in suppressing anti-tumor immunity.Accumulated evidences indicate that Treg cells are elevated in peripheral blood,however,there are also reports that decreased Treg cells are found in hepatocellular patients.This study focuses on the changes of Treg cells ratio in peripheral blood of hepatocellular carcinoma patients before and 1 week, 4 weeks after ablation ,also its functional cytokines,such as TGF-β,IL-10,IFN-γ,and inhibition function when co-cultured with CD4+CD25-、CD8+ cells. The investigators speculate that a decreased Treg ratio will be found in patients who receive ablation therapy,and its function cytokines,moreover,CD4+CD25-、CD8+ cells' proliferation and function could be inhibited when co-cultured with Treg cells.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Hepatocellular Carcinoma

Interventions

radiofrequency ablationPROCEDURE

the patients are prepared by local anesthesia and intravenous sedative.guided by the ultrasound,the antenna used for radiofrequency ablation ablation is placed in the tumor to destroy tumor tissues,the output power and duration are depended by the tumor volume and location.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: * hepatocellular patients diagnosed through biopsy;or either dynamic imagine with a diagnosis of hepatocellular carcinoma and alphafetoprotein\>400μg/L；or two or more dynamic imagine with a diagnosis of hepatocellular carcinoma * Child-Pugh A or B * well preserved renal and hematopoietic Function * receive ablation therapy through percutaneous radiofrequency ablation or microwave ablation or ethanol injection ablation or any kind of combination of them. * achieve complete ablation accessed by contrast-enhanced CT Exclusion Criteria: * incomplete ablation * remote metastasis * Child-Pugh C * general infection * autoimmune diseases * suffer from other tumors concurrently or in last five years * patients with immune deficit or infected by HIV * receiving glucocorticoid or other medicine inhibiting immune system

Locations (1)

Sun Yat-Sen University,First Affiliated Hospital

Guangzhou, Guangdong, China

Outcomes

Primary Outcomes

variation of absolute counting of T cell subsets in peripheral blood of HCC patients before and 1,4 weeks after radiofrequency ablation therapy

changes of absolute counting of T cell subsets in peripheral blood of HCC patients before and 1,4 weeks after radiofrequency ablation therapy,such as CD3+,CD4+,CD8+,CD4+CD25+FOXP3+(Treg) cells.

Time frame: 4 weeks post therapy

variation of serum IL-10,TGF-β1,IFN-γ concentration of HCC patients before and 1,4 weeks after radiofrequency ablation therapy

Time frame: 4 weeks post therapy

Secondary Outcomes

variation of proliferation suppression ability of CD4+CD25+ T cells of HCC patients before and 1,4 weeks after radiofrequency ablation therapy

CD4+CD25+ T cells, derived from peripheral blood of HCC patients before and 1,4 weeks after radiofrequency ablation therapy,were co-cultured with CD4+CD25- or CD8+ T cells,which were stimulated by CD3/CD28 MACSiBead Particles.CD4+CD25- and CD8+ T cells proliferation changes were analysed to test CD4+CD25+ T cell suppression ability.

Time frame: 4 weeks post therapy

variation of suppression ability of CD4+CD25+ T cells of HCC patients on cytokine secretion before and 1,4 weeks after radiofrequency ablation therapy

CD4+CD25+ T cells, derived from peripheral blood of HCC patients before and 1,4 weeks after radiofrequency ablation therapy,were co-cultured with CD4+CD25- or CD8+ T cells,which were stimulated by CD3/CD28 MACSiBead Particles.supernatant IFN-γ were analysed to test CD4+CD25+ T cell suppression ability.

Time frame: 4 weeks post therapy

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.