Thymic Generation of Regulatory T Lymphocytes in Type I Diabetes Patients.
试验速览
- 阶段
- 不适用
- 状态
- 撤回
- 试验地点
- 2
- 主要终点
- Variability of the diversity of antigen-receptors' repertoires, expressed by regulatory T cells from type I diabetes patients and healthy controls.
研究概览
简要总结
Regulatory T lymphocytes play a major role in the protection from autoimmune pathology. Defects in immunosuppression mediated by these cells is therefore suspected to contribute to these diseases. This issue has very little been studied in humans.Regulatory T cells emigrated from the thymus will be isolated from the blood of patients and healthy controls. The repertoire of antigen-receptors will be analysed by high throughput sequencing and its diversity estimated using appropriate statistical models borrowed from ecology.
详细描述
In the thymus of an animal model of type I diabetes, the population of regulatory T cells expresses a repertoire of antigen receptors that is approximately ten-fold less diverse than that found in mice resistant to autoimmune pathology. Genetic models later showed that this reduced diversity was involved in the susceptibility to diabetes. Researchers study the diversity of the TCR expressed by regulatory T cells from paediatric type I diabetes patients and controls. Regulatory T cells emigrated from the thymus will be isolated from the blood of patients and healthy controls. The repertoire of antigen-receptors will be analysed by high throughput sequencing and its diversity estimated using appropriate statistical models borrowed from ecology.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 6 Years 至 12 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •type I diabetes patient
- •having at least one age-matched sibling (healthy control)
排除标准
- •other immunopathology
- •treatment with any anti-inflammatory or immunosuppressive drugs
- •legal protection
结局指标
主要结局
Variability of the diversity of antigen-receptors' repertoires, expressed by regulatory T cells from type I diabetes patients and healthy controls.
时间窗: Day 1
Treg from the pediatric patients and the control subjects' blood will be isolated by cytometry, the messenger ribonucleic acid (mRNA) of these cells will be isolated, and the analysis of the alpha and beta chains of the TCRs will be carried out by high-throughput sequencing.
次要结局
- Ratio between TCR diversities expressed by Treg cells vs. conventional T cells.(Day 1)