cytokines;
chromatin;
monoallelism;
green florescence protein;
D O I:
10.1007/s10875-005-8218-5
中图分类号:
R392 [医学免疫学];
Q939.91 [免疫学];
学科分类号:
100102 ;
摘要:
Among a population of uniformly differentiated TH2 cells, only a portion express IL-4 upon stimulation and those that do often express the product of only a single allele. We review the evidence for the basis of IL-4 monoallelism and argue that it depends upon probabilistic expression of the Il4 gene. Further, we argue that probabilistic expression may provide a powerful mechanism through which certain key functions of IL-4, such as immunoglobulin class switching and determination of macrophage phenotype, may be efficiently regulated.