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DC Field | Value | Language |
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dc.contributor.author | Chi, J | - |
dc.contributor.author | Ballabio, E | - |
dc.contributor.author | Chen, XH | - |
dc.contributor.author | Kusec, R | - |
dc.contributor.author | Taylor, S | - |
dc.contributor.author | Hay, D | - |
dc.contributor.author | Tramonti, D | - |
dc.contributor.author | Saunders, NJ | - |
dc.contributor.author | Littlewood, T | - |
dc.contributor.author | Pezzella, F | - |
dc.contributor.author | Boultwood, J | - |
dc.contributor.author | Wainscoat, JS | - |
dc.contributor.author | Hatton, CSR | - |
dc.contributor.author | Lawrie, CH | - |
dc.date.accessioned | 2012-09-14T12:45:10Z | - |
dc.date.available | 2012-09-14T12:45:10Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Biology Direct, 6: Article no. 23, May 2011 | en_US |
dc.identifier.issn | 1745-6150 | - |
dc.identifier.uri | http://www.biology-direct.com/content/6/1/23 | en |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/6649 | - |
dc.description | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited - Copyright @ 2011 Chi et al. | en_US |
dc.description.abstract | Background: MicroRNAs are small RNA species that regulate gene expression post-transcriptionally and are aberrantly expressed in many cancers including hematological malignancies. However, the role of microRNAs in the pathogenesis of multiple myeloma (MM) is only poorly understood. We therefore used microarray analysis to elucidate the complete miRNome (miRBase version 13.0) of purified tumor (CD138+) cells from 33 patients with MM, 5 patients with monoclonal gammopathy of undetermined significance (MGUS) and 9 controls. Results: Unsupervised cluster analysis revealed that MM and MGUS samples have a distinct microRNA expression profile from control CD138+ cells. The majority of microRNAs aberrantly expressed in MM (109/129) were up-regulated. A comparison of these microRNAs with those aberrantly expressed in other B-cell and T-cell malignancies revealed a surprising degree of similarity (~40%) suggesting the existence of a common lymphoma microRNA signature. We identified 39 microRNAs associated with the pre-malignant condition MGUS. Twenty-three (59%) of these were also aberrantly expressed in MM suggesting common microRNA expression events in MM progression. MM is characterized by multiple chromosomal abnormalities of varying prognostic significance. We identified specific microRNA signatures associated with the most common IgH translocations (t(4;14) and t(11;14)) and del(13q). Expression levels of these microRNAs were distinct between the genetic subtypes (by cluster analysis) and correctly predicted these abnormalities in > 85% of cases using the support vector machine algorithm. Additionally, we identified microRNAs associated with light chain only myeloma, as well as IgG and IgA-type MM. Finally, we identified 32 microRNAs associated with event-free survival (EFS) in MM, ten of which were significant by univariate (logrank) survival analysis. Conclusions: In summary, this work has identified aberrantly expressed microRNAs associated with the diagnosis, pathogenesis and prognosis of MM, data which will prove an invaluable resource for understanding the role of microRNAs in this devastating disease. | en_US |
dc.description.sponsorship | This work was funded by grants from Leukaemia and Lymphoma Research (JC, EB, X-HC, DT, JB and JSW) and the Julian Starmer-Smith Memorial Fund (CHL). The authors acknowledge financial support from the Department of Health via the National Institute for Health Research (NIHR) comprehensive Biomedical Research Centre award to Oxford Radcliffe NHS Trust. | en_US |
dc.language | English | - |
dc.language.iso | en | en_US |
dc.publisher | Biomed Central Ltd | en_US |
dc.title | MicroRNA expression in multiple myeloma is associated with genetic subtype, isotype and survival | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.1186/1745-6150-6-23 | - |
pubs.organisational-data | /Brunel | - |
pubs.organisational-data | /Brunel/Brunel Active Staff | - |
pubs.organisational-data | /Brunel/Brunel Active Staff/School of Health Sciences & Social Care | - |
pubs.organisational-data | /Brunel/Brunel Active Staff/School of Health Sciences & Social Care/Biological Sciences | - |
pubs.organisational-data | /Brunel/Group Publication Pages | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/School of Health Sciences and Social Care - URCs and Groups | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/School of Health Sciences and Social Care - URCs and Groups/Centre for Systems and Synthetic Biology | - |
Appears in Collections: | Biological Sciences Publications Dept of Life Sciences Research Papers |
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