Analysis of EBV latency by EBER in situ hybridization in nasopharyngeal carcinoma Spanish patients.

Abstract:

BACKGROUND:The aim of this study was to analyse the Epstein-Barr virus (EBV) latency by detecting the EBV-associated latent small nuclear RNAs (EBER), in a group of biopsies from Spanish patients with diagnosed nasopharyngeal carcinoma (NPC). MATERIALS AND METHODS:NPC paraffin samples with the presence of EBV demonstrated by non-isotopic in situ hybridization (NISH) and nested-PCR, were analysed for EBV latency using EBER in situ hybridization (EBER-ISH). RESULTS:We detected EBER in 83.3% of samples (10 out of 12 cases), demonstrating the relationships between EBV genome presence with the latent viral infection. We correlated these results of EBV-DNA and -RNA presence with the immunoexpression of latent membrane protein-1 (LMP-1), a viral oncogenic protein (8 out of 12 cases or 66.6%). CONCLUSION:These results indicate that all the types of NPC are variants of an EBV-associated malignancy and that viral latency is a critical phenomenon in the development of this neoplasia.

journal_name

Anticancer Res

journal_title

Anticancer research

authors

Burgos JS,Vera-Sempere FJ

subject

Has Abstract

pub_date

2001-11-01 00:00:00

pages

3921-4

issue

6A

eissn

0250-7005

issn

1791-7530

journal_volume

21

pub_type

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