Journal
BRITISH JOURNAL OF HAEMATOLOGY
Volume 137, Issue 6, Pages 503-512Publisher
WILEY
DOI: 10.1111/j.1365-2141.2007.06611.x
Keywords
microRNA; lymphoma; leukaemia; haematological malignancies; haematopoiesis
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MicroRNAs are a recently discovered class of small (similar to 22nt) endogenously expressed translational-repressor RNAs that play key roles in many cellular pathways and whose aberrant expression appears to be a common feature of malignancy. MicroRNAs are expressed in specific haematological cell types and play important regulatory roles in early haematopoietic differentiation, erythropoiesis, granulocytosis, megakaryocytosis and lymphoid development. Additionally, there is an emerging body of research to suggest that microRNAs play an important role in the pathology of haematological malignancies. MicroRNAs have been found to act as both tumour suppressor molecules [e.g. MIRN15A (miR-15a), MIRN16-1 (miR-16-1)] in leukaemias and have oncogenic properties [e.g. MIRN155 (miR-155) and MIRN17-92 (miR-17-miR-92) cluster] in lymphomas. This review discusses the rapidly accumulating research that points to the major role microRNAs play in both haematopoiesis and haematological malignancy.
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