核酸适配子是采用指数富集配体的系统进化(SELEX)技术从随机单链寡核苷酸库中筛选出的能与靶物质高特异性、高亲和力结合的配体,其特性在很多方面优于抗体,在分子识别研究中具有重要价值,可用于靶物质的测定、阻断靶物质的生物活性,在肿瘤的诊断和治疗中有着广阔的应用前景。 Nucleic acid aptamers are characterized by their high specificity and high affinity, which are screened from a pool of random single-stranded oligonucleotides using the exponential enrichment ligand-based system evolution (SELEX) technique and are characterized by many It is superior to the antibody in molecular recognition research and has important value in the determination of target substance and blocking the biological activity of the target substance. It has broad application prospects in the diagnosis and treatment of tumors.