摘要
目的研究CpG序列在诱生抗dsDNA抗体中的作用及可能机制。方法以人工合成的含有CpG序列的寡核苷酸为生物佐剂,用天然的小牛胸腺DNA模拟自身抗原,免疫正常的BALB/c小鼠。免疫结束后,分别用天然的大肠杆菌DNA(nECDNA)和小牛胸腺DNA(nCTDNA)作为包被抗原检测小鼠血清的抗dsDNA抗体。结果用CpG序列加nCTDNA免疫的小鼠出现较高水平的抗dsDNA抗体和细胞因子(包括白介素6、白介素12、干扰素γ),组间的差异有显著性(P<0.01),诱导的抗体与nECDNA和nCTD-NA均能结合,但在结合的量上有差异。结论CpG序列能促进正常小鼠产生具有交叉反应特性的抗ds-DNA抗体。
Objective To investigate the effect of CpG sequences on t he induction of anti-dsDNA antibodies and the possible mechanism. Methods Usin g a synthetic oligodeoxynucleotide (CpG-ODN) containing CpG as an adjuvant, nati ve calf thymus DNA (nCTDNA) was used as the mimic self antigen to immunize norma l BALB/c mice. About one week after immunization, anti-dsDNA antibodies were tes ted by ELISA using nCTDNA and native Escherichia coli DNA (nECDNA) as test antig ens. Results The levels of anti-dsDNA antibodies and cytokines including IL-6, IL-12, IFN- but the binding abilities were different significantly. Conclusion The CpG motif can promote the product ion of cross-reactive anti-dsDNA antibodies in normal mice.
出处
《中华皮肤科杂志》
CAS
CSCD
北大核心
2004年第12期687-689,共3页
Chinese Journal of Dermatology
