Identification of Interleukin-13 gene polymorphism A2044G in the patients with asthma in the north of China by molecular beacon-based capillary electrophoresis(MB-CE) analysis / 中华检验医学杂志

ABSTRACT

Objective To develop a new method, capillary electrophoresis(CE) based on molecular beacon(MB),for rapid detection of polymerase chain reaction(PCR).To explor the roles of the IL-13 gene exon4 A2044G single nucleiotide polymorphism(SNP) in the pathogenesis of bronchial asthma.Methods The IL-13 exon 4 was amplified by PCR with genomic DNA used as templates from 20 healthy persons and 32 patients with dominantly allergic familial history living in the north of china.Then separating the amplification with capillary electrophoresis followed by hybridization of molecular beacons into the PCR product which were sequenced in the end. Results Detected with CE-MB method,there was significant difference in the distribution of A/G in IL-13exon 2044,A allele frequency was higher in asthma compared with normal controls,same as sequencing. Conclusion The method of capillary electrophoresis based on molecular beacon(MB-CE) is able to be developed as a clinical detecting method for genetic variation diseases.IL-13 A2044G SNP is important in the asthmatic mechanism.