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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Down-regulation of a serine protease, myeloblastin, causes growth arrest and differentiation of promyelocytic leukemia cells.

Cells from the human leukemia cell line HL-60 undergo terminal differentiation when exposed to inducing agents. Differentiation of these cells is always accompanied by withdrawal from the cell cycle. Here we describe the isolation of a cDNA encoding a novel serine protease that is present in HL-60 cells and is down-regulated during induced differentiation of these cells. We have named this protease myeloblastin. Down-regulation of myeloblastin mRNA occurs with both monocytic and granulocytic inducers. Myeloblastin mRNA is undetectable in fully differentiated HL-60 cells as well as in human peripheral blood monocytes. We found that regulation of myeloblastin mRNA in HL-60 cells is serum dependent. Inhibition of myeloblastin expression by an antisense oligodeoxynucleotide inhibits proliferation and induces differentiation of promyelocyte-like leukemia cells.[1]

References

  1. Down-regulation of a serine protease, myeloblastin, causes growth arrest and differentiation of promyelocytic leukemia cells. Bories, D., Raynal, M.C., Solomon, D.H., Darzynkiewicz, Z., Cayre, Y.E. Cell (1989) [Pubmed]
 
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