Martin Maureen P, Carrington Mary
Laboratory of Genomic Diversity, SAIC-Frederick, Inc., NCI-Frederick, Frederick, MD, USA.
Methods Mol Biol. 2008;415:49-64. doi: 10.1007/978-1-59745-570-1_3.
The genes encoding the killer immunoglobulin-like receptors (KIR) are situated within a segment of DNA that has undergone expansion and contraction over time due in large part to unequal crossing over. Consequently, individuals exhibit considerable haplotypic variation in terms of gene content. The highly polymorphic human leukocyte antigen (HLA) class I loci encode ligands for the KIR; thus, it is not surprising that KIR genes also show significant allelic polymorphism. As a result of the receptor-ligand relationship between KIR and HLA, functionally relevant KIR-HLA combinations need to be considered in the analysis of these genes as they relate to disease outcomes. This chapter will describe a genotyping method for identifying the presence/absence of the KIR genes and general approaches to data analysis in disease association studies.
编码杀伤细胞免疫球蛋白样受体(KIR)的基因位于一段DNA片段中,该片段由于大部分是不等交换而随时间经历了扩增和收缩。因此,个体在基因含量方面表现出相当大的单倍型变异。高度多态的人类白细胞抗原(HLA)I类基因座编码KIR的配体;因此,KIR基因也显示出显著的等位基因多态性也就不足为奇了。由于KIR和HLA之间的受体-配体关系,在分析这些与疾病结局相关的基因时,需要考虑功能相关的KIR-HLA组合。本章将描述一种用于鉴定KIR基因存在与否的基因分型方法以及疾病关联研究中的数据分析一般方法。