Analysis and state of HCV genotype 6a infection
- VernacularTitle:丙型肝炎病毒6a型感染的状态与分析
- Author:
Rui ZHANG
;
Junqiang LI
;
Lijun LIU
;
Shaocai DU
;
Lai WEI
- Publication Type:Journal Article
- Keywords:
Hepacivirus;
Hepatitis C;
Genotype;
Recombination,genetic
- From:
Journal of Peking University(Health Sciences)
2003;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the infection state of hepatitis C virus genotype 6a in China.Methods: Three(95,126,150)HCV genotype 6a serum samples were identified by digesting 5′NCR with compound enzyme method.Then,HCV 5′NCR and NS5B fragments were amplified from these samples by RT-PCR assay and sequenced.The phylogenetic trees of the samples were analyzed and compared with 24 HCV complete gene sequences from GenBank.Results: The sequencing reports on 5′NCR showed "CA" bases in 3 serum samples(95,126,150) were inserted into-145 site,and the sequences of 3 serum samples had the highest homology with sequence Y12083(0.934,0.930,and 0.926,respectively).The results of the phylogenetic trees suggested these 3 serum samples belonged to HCV genotype 6a.The sequencing reports on NS5B showed the 3 serum samples also had the highest homology with HC-J4(0.934,0.930,and 0.926,respectively),and the results of the phylogenetic trees suggested these 3 serum samples belonged to HCV genotype 1b.To exclude the influence of amplification efficiency of primers,NS5B fragments were amplified by HCV genotype 6a specific primers and no amplification products appeared.Conclusion: There are different results of HCV genotype by analyzing 5′NCR and NS5B in 3 samples infected with HCV genotype 6a.It may be related with gene recombination.It suggests HCV genotype should be analyzed on more than two regions.
