The pan-ErbB receptor tyrosine kinase inhibitor canertinib induces ErbB-independent apoptosis in human leukemia (HL-60 and U-937) cells
2010 (English)In: BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, ISSN 0006-291X, Vol. 393, no 1, 6-10 p.Article in journal (Refereed) Published
Epidermal growth factor (EGF) receptor tyrosine kinase inhibitors have recently been shown to display anti-neoplastic effects in human malignant myeloid cells. Our study was initiated in order to determine the effect of the pan-ErbB receptor tyrosine kinase inhibitor, canertinib (CI-1033), on growth and survival of human leukemia (HL-60 and U-937) cells. We show that treatment of HL-60 and U-937 cells with canertinib significantly inhibits growth of both cell lines in a dose-dependent manner; half maximal effective dose (IC50) in HL-60 and U-937 cells was approximately 2.5 mu M and 1.0 mu M, respectively. Treatment with 2 mu M canertinib promoted a G(1) cell cycle arrest, whereas doses of 5 mu M or more induced apoptosis as determined by the Annexin V method and cleavage of poly-(ADP-ribose) polymerase (PARP). HL-60 and U-937 cells lacked EGF-receptor transcript but expressed ErbB2-4 mRNA as determined by RTPCR. However, none of the corresponding ErbB-receptor proteins could be detected by Western blot analysis. We conclude that canertinib induces apoptosis in HL-60 and U-937 cells devoid of functional ErbB1-4 receptors. Our results suggest that canertinib could be of potential clinical interest in the treatment of acute myeloid leukemia.
Place, publisher, year, edition, pages
2010. Vol. 393, no 1, 6-10 p.
Leukemia, Tyrosine kinase inhibitor, CI-1033, ErbB-receptor, Growth inhibition, Apoptosis
National CategoryMedical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-54619DOI: 10.1016/j.bbrc.2010.01.055ISI: 000275371300002OAI: oai:DiVA.org:liu-54619DiVA: diva2:305982