Unexpected patterns of Epstein-Barr virus transcription revealed by a high throughput PCR array for absolute quantification of viral mRNA.
Unexpected patterns of Epstein-Barr virus transcription revealed by a high throughput PCR array for absolute quantification of viral mRNA.
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DOI:
10.1016/j.virol.2014.10.030
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发表时间:
2015-01-01
期刊:
影响因子:
3.7
通讯作者:
Rowe, Martin
中科院分区:
文献类型:
--
作者:
Tierney, Rosemary J.;Shannon-Lowe, Claire D.;Fitzsimmons, Leah;Bell, Andrew I.;Rowe, Martin
关键词:
We have validated a flexible, high-throughput and relatively inexpensive RT-QPCR array platform for absolute quantification of Epstein–Barr virus transcripts in different latent and lytic infection states. Several novel observations are reported. First, during infection of normal B cells, Wp-initiated latent gene transcripts remain far more abundant following activation of the Cp promoter than was hitherto suspected. Second, EBNA1 transcript levels are remarkably low in all forms of latency, typically ranging from 1 to 10 transcripts per cell. EBNA3A, -3B and -3C transcripts are likewise very low in Latency III, typically at levels similar to or less than EBNA1 transcripts. Thirdly, a subset of lytic gene transcripts is detectable in Burkitt lymphoma lines at low levels, including: BILF1, which has oncogenic properties, and the poorly characterized LF1, LF2 and LF3 genes. Analysis of seven African BL biopsies confirmed this transcription profile but additionally revealed significant expression of LMP2 transcripts. We have validated a QPCR array platform to quantify Epstein–Barr virus transcripts. Detection of 45 viral transcripts starting from ng amounts of RNA. EBNA1 transcript levels are remarkably low in all forms of latency. BILF1, LF1, LF2 and LF3 transcripts are detectable in Burkitt lymphoma lines. Significant levels of LMP2 transcripts were also detected in BL biopsies.
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