摘要
目的 克隆并分析华南地区粉尘螨主要变应原Der f 2的cDNA片段。方法 广州地区收集、鉴定、培养的粉尘螨,提取总RNA,RT-PCR扩增其Der f 2片段,连接入T载体,测序和分析。结果 Der f 2片段长度为558bp,与GenBank公布的Der f 2(D10448)的核酸序列比较,在62个核苷酸处插入了87个核苷酸,插入点前后的核酸序列没有差异,按原读码框进行读码显示插入了29个氨基酸,插入点前后的氨基酸序列没有改变。结论 获得华南地区粉尘螨的Der f 2 cDNA片段,和已公布的序列相比,有较大差异。
Objective To clone and analyze the cDNA of major allergen Der f 2 of Dermatophagoides farinae in south China. Methods cDNA of Der f 2 was cloned by RT-PCR, screened and their sequences were analyzed. Results cDNAof Der f 2 was cloned. The sequence of the cloned Der f 2 was different with that published (D10448) in GenBank, with 87 additional nucleotides inserted into the 62th nucleotide of the original one. According to the original ORF, the deduced amino acids that were located prior or after the inserted 29 amino acid sequence showed no changes. Conclusion The cDNA of Der f 2 was cloned from Dermatophagoides farinae and its sequence showed significant difference with that reported in the GenBank.
出处
《中国寄生虫学与寄生虫病杂志》
CAS
CSCD
北大核心
2003年第3期160-163,共4页
Chinese Journal of Parasitology and Parasitic Diseases
基金
广州市教委资助项目(999095)
