Abstract:
:A number of human disorders, dubbed ribosomopathies, are linked to impaired ribosome biogenesis or function. These include but are not limited to Diamond Blackfan anemia (DBA), Shwachman Diamond syndrome (SDS), and the 5q- myelodysplastic syndrome (MDS). This review focuses on the latter two non-DBA disorders of ribosome function. Both SDS and 5q- syndrome lead to impaired hematopoiesis and a predisposition to leukemia. SDS, due to bi-allelic mutations of the SBDS gene, is a multi-system disorder that also includes bony abnormalities, and pancreatic and neurocognitive dysfunction. SBDS associates with the 60S subunit in human cells and has a role in subunit joining and translational activation in yeast models. In contrast, 5q- syndrome is associated with acquired haplo-insufficiency of RPS14, a component of the small 40S subunit. RPS14 is critical for 40S assembly in yeast models, and depletion of RPS14 in human CD34(+) cells is sufficient to recapitulate the 5q- erythroid defect. Both SDS and the 5q- syndrome represent important models of ribosome function and may inform future treatment strategies for the ribosomopathies.
journal_name
Semin Hematoljournal_title
Seminars in hematologyauthors
Burwick N,Shimamura A,Liu JMdoi
10.1053/j.seminhematol.2011.01.002subject
Has Abstractpub_date
2011-04-01 00:00:00pages
136-43issue
2eissn
0037-1963issn
1532-8686pii
S0037-1963(11)00003-5journal_volume
48pub_type
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