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CSF-1R up-regulation is associated with response to pharmacotherapy targeting tyrosine kinase activity in AML cell

Michael Kogan1, Tracy Fischer-Smith, Rafal Kaminsky

  • 1Temple University School of Medicine, Department of Neuroscience, 3500 N. Broad St., Medical Education and Research Bld, Rm 746, Philadelphia, PA 19140-5104, USA.

Anticancer Research
|March 9, 2012
PubMed
Abstract

Insights

Colony stimulating factor 1 receptor (CSF-1R) inhibition shows promise for treating acute myelogenous leukemia (AML). This research explored sunitinib

Area of Science:

  • Oncology
  • Molecular Biology
  • Hematology

Background:

  • The role of Colony Stimulating Factor 1 Receptor (CSF-1R) in oncogenesis is established, but its specific relevance to human acute myelogenous leukemia (AML) remains unclear.
  • Sunitinib has demonstrated potential therapeutic benefits in AML clinical trials, yet the underlying mechanisms are not fully understood.

Purpose of the Study:

  • To investigate the anticancer effects of sunitinib and a CSF-1R inhibitor (cFMS-I) on myeloid leukemia cell lines.
  • To explore the potential of CSF-1R as a therapeutic target in AML.

Main Methods:

  • Treatment of myeloid cell lines (Mono-Mac 1, THP-1, U937) with sunitinib and a small-molecule CSF-1R inhibitor (cFMS-I).
  • Assessment of proliferation and extracellular-signal regulated kinase (ERK) activity.
  • Measurement of CSF-1R expression levels.

Main Results:

  • CSF-1R inhibition led to reduced proliferation and ERK activity in Mono-Mac 1 cells.
  • Both sunitinib and cFMS-I treatment resulted in a dose-dependent increase in CSF-1R expression.
  • These findings indicate a biological response to CSF-1R targeting in AML models.

Conclusions:

  • CSF-1R is a potential therapeutic target for sunitinib and similar agents in AML treatment.
  • Further research into CSF-1R could lead to more targeted therapies and personalized medicine approaches for AML patients.

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