[Assay and L1 gene sequence analysis of human papillomavirus type 6 and 11 in condylomata acuminata].
OBJECTIVE
To determinate the prevalence of HPV type 6, 11 in condylomata acuminata, and analyze the sequence of L1 gene and its deduced L1 protein.


METHODS
PCR was used to amplify DNA sequences between E6 and E7 of HPV type 6 and 11. The PCR products were identified by the fragment length cleaved with restriction enzyme RsaI. L1 genes were amplified with high fidelity Taq, and cloned DNA sequences were detected by the dideoxynucleotide method.


RESULTS
In 34 examples of condylomata acuminata, HPV11 was found in 25 examples (73.5%), HPV6 in 15(44.1%), including HPV6 + HPV11 in 6(17.6%). In comparison with the prototypes there were 7-8 point mutations in HPV11 L1 gene and 3 in HPV6L1 gene. L1 encoded protein changes showed up only in 1-3 amino acids in the former cases.


CONCLUSIONS
Most of patients tested with condylomata acuminata are mainly infected by HPV11, the rest of them by HPV6 or by co-infection of two mixex types. Sequence analysis of L1 genes indicated that mutations were found in both HPV6 and 11, whereas deduced amino acid mutations in L1 protein were limited in HPV11 only.
Zhang
M
M
Department of Biophysics, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing 100005, China.
Liu
Y
Y
Liu
S
S
Zhang
B
B
Si
J
J
Xu
X
X
Chen
L
L
Song
G
G
D000328:Adult; D036022:Capsid Proteins; D003218:Condylomata Acuminata / Q000821:virology*; D005260:Female; D005814:Genes, Viral; D006801:Humans; D008297:Male; D009154:Mutation; D009856:Oncogene Proteins, Viral / Q000235:genetics*; D027383:Papillomaviridae / Q000235:genetics*; D016133:Polymerase Chain Reaction; D017421:Sequence Analysis; D014764:Viral Proteins
D036022:Capsid Proteins; C094776:L1 protein, Human papillomavirus type 11; D009856:Oncogene Proteins, Viral; D014764:Viral Proteins; C091560:L1 protein, Human papillomavirus type 6