The pan-ErbB receptor tyrosine kinase inhibitor canertinib promotes apoptosis of malignant melanoma in vitro and displays anti-tumor activity in vivo
2011 (English)In: Biochemical and Biophysical Research Communications - BBRC, ISSN 0006-291X, E-ISSN 1090-2104, Vol. 414, no 3, 563-568 p.Article in journal (Refereed) Published
The ErbB receptor family has been suggested to constitute a therapeutic target for tumor-specific treatment of malignant melanoma. Here we investigate the effect of the pan-ErbB tyrosine kinase inhibitor canertinib on cell growth and survival in human melanoma cells in vitro and in vivo. Canertinib significantly inhibited growth of cultured melanoma cells, RaH3 and RaH5, in a dose-dependent manner as determined by cell counting. Half-maximum growth inhibitory dose (IC(50)) was approximately 0.8 mu M and by 5 mu M both cell lines were completely growth-arrested within 72 h of treatment. Incubation of exponentially growing RaH3 and RaH5 with 1 mu M canertinib accumulated the cells in the G(1)-phase of the cell cycle within 24 h of treatment without induction of apoptosis as determined by flow cytometry. Immunoblot analysis showed that 1 mu M canertinib inhibited ErbB1-3 receptor phosphorylation with a concomitant decrease of Akt-, Erk1/2- and Stat3 activity in both cell lines. In contrast to the cytostatic effect observed at doses less than= 5 mu M canertinib, higher concentrations induced apoptosis as demonstrated by the Annexin V method and Western blot analysis of PARP cleavage. Furthermore, canertinib significantly inhibited growth of RaH3 and RaH5 melanoma xenografts in nude mice. Pharmacological targeting of the ErbB receptors may prove successful in the treatment of patients with metastatic melanoma.
Place, publisher, year, edition, pages
Elsevier , 2011. Vol. 414, no 3, 563-568 p.
Malignant melanoma; Tyrosine kinase inhibitor; Canertinib; ErbB-receptor; Apoptosis
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-73740DOI: 10.1016/j.bbrc.2011.09.118ISI: 000298519500021OAI: oai:DiVA.org:liu-73740DiVA: diva2:476386
On the day of the defence date the status of this article was Manuscript and the title "The pan-ErbB receptor tyrosine kinase inhibitor Canertinib (CI-1033)promotes cell cycle arrest and apoptosis of human malignantmelanoma in vitro".2012-01-122012-01-122012-11-27