DIFFERENTIAL ACTIVATION REQUIREMENTS OF CLONED T CELLS

该项目的长期目标是进一步了解 调节CD 4 + T细胞亚群活化的机制， 控制T-B细胞相互作用的机制， 抗体的合成。' 该项目的具体目标是：1.精确定义 导致Th 1相对于Th 2 T活化和扩增的条件 细胞2.检查Th 1和Th 2克隆的特征， 能够诱导抗体合成，并通过以下方式剖析其机制： 他们执行这个功能。3.研究Th 1和Th 2的作用 “非辅助”克隆诱导抗体合成。 为了执行这个项目，我们的实验室已经生成了一个大的标称面板， 抗原特异性Th 1和Th 2克隆，它们在免疫应答方面是异质的， 淋巴因子的产生， 在诱导抗体合成中提供同源帮助的能力。 此外，我们已经建立了准确和灵敏的ELISA检测方法， IgG，IgG亚类，伊加和IgE，并已获得其他 研究人员帮助我们将分子生物学技术应用于 分析我们的克隆人我们有能力纯化B细胞和附件 细胞群，我们有强大的工具来分析T细胞 在克隆水平上的激活和功能。 由于同种型特异性反应需要存在不同的 淋巴因子，因为对不同类型的病原体的反应需要 T细胞的不同功能，CD 4 + T细胞分裂成亚群 可能在免疫反应的调节中具有根本的重要性。 因此，了解选择性激活一个 CD 4 + T细胞亚群的类型，以及每个亚群的作用 在抗体合成的诱导是至关重要的未来发展 的策略，以有利地操纵免疫系统， 疾病状态。

The long term goal of this project is to gain further insight into the mechanisms governing the activation of CD4+ T cell subsets, and the mechanisms governing T-B cell interactions which result in the induction of antibody synthesis.' The specific aims of this project are to: 1. precisely define the conditions which lead to the activation and expansion of Th1 versus Th2 T cells. 2. examine the characteristics of Th1 and Th2 clones which are capable of inducing antibody synthesis, and dissect the mechanism by which they perform this function. 3. examine the role of Th1 and Th2 "nonhelper" clones in the induction of antibody synthesis. To perform this project, our lab has generated a large panel of nominal antigen specific Th1 and Th2 clones, which are heterogeneous with regard to their profile of lymphokine production and with regard to their ability to provide cognate help in the induction of antibody synthesis. In addition, we have established accurate and sensitive ELISA assays for IgG, IgG subclasses, IgA, and IgE, and have enlisted the support of other investigators to help us apply molecular biology techniques in the analysis of our clones. With our ability to purify B cell and accessory cell populations, we have available powerful tools to analyze T cell activation and function at the clonal level. Since isotype specific responses require the presence of distinct lymphokines, and since responses to different types of pathogens require distinct functions of T cells, the division of CD4+ T cells into subsets may be of fundamental importance in the regulation of immune responses. Thus understanding of the requirements for selective activation of one type of CD4+ T cell subset over another, and of the role of each subset in the induction of antibody synthesis is crucial for future development of strategies to favorably manipulate the immune system in multiple disease states.