Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
Blood. 1997 Nov 1;90(9):3691-8.

The tyrosine kinase inhibitor CGP57148B selectively inhibits the growth of BCR-ABL-positive cells.

Author information

  • 1Leukaemia Research Fund Centre for Adult Leukaemia, Department of Haematology, Royal Postgraduate Medical School, London, UK.


The Philadelphia chromosome found in virtually all cases of chronic myeloid leukemia (CML) and in about one third of the cases of adult acute lymphoblastic leukemia is formed by a reciprocal translocation between chromosomes 9 and 22 that results in the fusion of BCR and ABL genetic sequences. This BCR-ABL hybrid gene codes for a fusion protein with deregulated tyrosine kinase activity that can apparently cause malignant transformation. CGP57148B, a 2-phenylaminopyrimidine derivative, has been shown to selectively inhibit the tyrosine kinase of ABL and BCR-ABL. We report here that this compound selectively suppresses the growth of colony-forming unit-granulocyte/macrophage (CFU-GM) and burst-forming unit-erythroid derived from CML over a 2-logarithmic dose range with a maximal differential effect at 1.0 micromol/L. However, almost all CML colonies that grow in the presence of 1.0 micromol/L CGP57148B are BCR-ABL-positive, which may reflect the fact that residual normal clonogenic myeloid precursors are infrequent in most patients with CML. We also studied the effects of CGP57148B on hematopoietic cell lines. Proliferation was suppressed in most of the BCR-ABL-positive lines; all five BCR-ABL-negative lines were unaffected. We conclude that this new agent may have significant therapeutic applications.

[PubMed - indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk