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

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Malignant transformation of early lymphoid progenitors in mice expressing an activated Blk tyrosine kinase.

The intracellular signals governing cellular proliferation and developmental progression during lymphocyte development are incompletely understood. The tyrosine kinase Blk is expressed preferentially in the B lineage, but its function in B cell development has been largely unexplored. We have generated transgenic mice expressing constitutively active Blk [Blk(Y495F)] in the B and T lymphoid compartments. Expression of Blk(Y495F) in the B lineage at levels similar to that of endogenous Blk induced B lymphoid tumors of limited clonality, whose phenotypes are characteristic of B cell progenitors at the proB/preB-I to preB-II transition. Expression of constitutively active Blk in the T lineage resulted in the appearance of clonal, thymic lymphomas composed of intermediate single positive cells. Taken together, these results indicate that specific B and T cell progenitor subsets are preferentially susceptible to transformation by Blk(Y495F) and suggest a role for Blk in the control of proliferation during B cell development.[1]

References

  1. Malignant transformation of early lymphoid progenitors in mice expressing an activated Blk tyrosine kinase. Malek, S.N., Dordai, D.I., Reim, J., Dintzis, H., Desiderio, S. Proc. Natl. Acad. Sci. U.S.A. (1998) [Pubmed]
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