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Tumour microvesicles contain retrotransposon elements and amplified oncogene sequences

Open access
Balaj, Leonora, Lessard, Ryan, Dai, Lixin, Cho, Yoon-Jae, Pomeroy, Scott L., Breakefield, Xandra O., Skog, Johan·2011·Nature Communications

Abstract

Tumour cells release an abundance of microvesicles containing a selected set of proteins and RNAs. Here, we show that tumour microvesicles also carry DNA, which reflects the genetic status of the tumour, including amplification of the oncogene c-Myc. We also find amplified c-Myc in serum microvesicles from tumour-bearing mice. Further, we find remarkably high levels of retrotransposon RNA transcripts, especially for some human endogenous retroviruses, such as LINE-1 and Alu retrotransposon elements, in tumour microvesicles and these transposable elements could be transferred to normal cells. These findings expand the nucleic acid content of tumour microvesicles to include: elevated levels of specific coding and non-coding RNA and DNA, mutated and amplified oncogene sequences and transposable elements. Thus, tumour microvesicles contain a repertoire of genetic information available for horizontal gene transfer and potential use as blood biomarkers for cancer.

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Metadata

Authors
Balaj, L., Lessard, R., Dai, L., Cho, Y.-J., Pomeroy, S. L., Breakefield, X. O., & Skog, J.
Venue
Nature Communications
Published
2011-02-01
Volume
2
Issue
1
Pages
180-180
ISSN
2041-1723 (ISSN-L)
OpenAlex
W1991390602
Cited by
1,187
References
6
FWCI
20.57
Type
journal article
Language
en
Open access
bronze

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