人乳头瘤病毒基因分型质控品的建立

The preparation of quality control materials for human papillomavirus genotyping

目的 建立HPV基因分型质控品.方法 收集宫颈脱落细胞标本300份,通过表面等离子谐振法和测序法检测标本型别,根据GenBank中参考序列设计各型别L1基因扩增引物,通过PCR扩增、连接转化构建包含不同型别L1基因重组质粒,通过30个重组质粒PCR鉴定和序列测定,并将测定序列用BLAST软件进行比对.结果 收集的标本包含了HPV 6、16、18等30种不同型别HPV感染.PCR扩增片段大小和设计引物扩增片段长度相符,除了HPV CP8304外,其余型别均在1 500～2 000 bp之间.重组质粒PCR鉴定与目的 片段相符,测序结果 与GenBank中的参考序列一致性在99%以上,在碱基数为1 500 bp的比对序列中不一致碱基数为11个.结论 建立了30种不同型别HPV L1基因分型质控品,覆盖了所有最常见型别,涵盖了14种高危型、3种中危型和13种低危型.

Objective To prepare the HPV genotyping control materials. Methods Three hundred cervical smears with different HPV genotypes were collected and detected by surface plasmon resonance and sequencing. The primers for specific genotype were designed according to GenBank. The recombinant plasmid was constructed through PCR amplification, ligation and transformation. Thirty recombinant plasmids were identified through PCR amplification, sequencing, and the sequences were compared using BLAST. Results The collected HPV infectious samples contained 30 different genotypes including HPV 6,16,18 and so on.The fragment sequences of PCR amplification were concordant with the designed. The fragment sizes of the other types ranged from 1 500 to 2 000 bp except HPV CP8304. And the 30 recombinant plasmids identified by PCR were concordant with the target. The identity of BLAST was 99%. In the fragment of 1500 bp in length, 11 bases were inconsistent with the reference sequence. Conclusions Genotyping control materials were developed successfully. The human papillomavirns genotyping control materials covered all the most common types and included 14 types with high-risk, 3 types with medium-risk and 13 types with low-risk.