Journal
BLOOD
Volume 128, Issue 7, Pages E10-E19Publisher
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2015-11-680843
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Funding
- Medical Research Council (MRC) [U117527252]
- Francis Crick Institute - MRC
- Cancer Research UK
- Wellcome Trust
- MRC [MC_U117527252, MC_EX_UU_G1000902, MC_UU_12021/1] Funding Source: UKRI
- Medical Research Council [MC_U117527252, MC_UU_12021/1, MC_EX_UU_G1000902] Funding Source: researchfish
- The Francis Crick Institute [10194] Funding Source: researchfish
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Long noncoding RNAs (lncRNAs) are potentially important regulators of cell differentiation and development, but little is known about their roles in Blymphocytes. Using RNAseq and de novo transcript assembly, we identified 4516 lncRNAs expressed in 11 stages of B-cell development and activation. Most of these lncRNAs have not been previously detected, even in the closely related T-cell lineage. Comparison with lncRNAs previously described in human B cells identified 185 mouse lncRNAs that have human orthologs. Using chromatin immunoprecipitation-seq, we classified 20% of the lncRNAs as either enhancer-associated (eRNA) or promoter-associated RNAs. We identified 126 eRNAs whose expression closely correlated with the nearest coding gene, thereby indicating the likely location of numerous enhancers active in the B-cell lineage. Furthermore, using this catalog of newly discovered lncRNAs, we show that PAX5, a transcription factor required to specify the B-cell lineage, bound to and regulated the expression of 109 lncRNAs in pro-B and matureB cells and 184 lncRNAs in acute lymphoblastic leukemia.
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