Imaging bone morphogenetic protein 7 induced cell cycle arrest in experimental gliomas.

Abstract:

:Bone morphogenetic protein 7 (BMP-7) belongs to the superfamily of transforming growth factor β-like cytokines, which can act either as tumor suppressors or as tumor promoters depending on cell type and differentiation. Our investigations focused on analyzing the effects of BMP-7 during glioma cell proliferation in vitro and in vivo. BMP-7 treatment decreased the proliferation of Gli36ΔEGFR-LITG glioma cells up to 50%through a cell cycle arrest in the G(1) phase but not by induction of apoptosis. This effect was mediated by the modulation of the expression and phosphorylation of cyclin-dependent kinase 2, cyclin-dependent kinase inhibitor p21, and downstream retinoblastoma protein. Furthermore, in vivo optical imaging of luciferase activity of Gli36ΔEGFR-LITG cells implanted intracranially into nude mice in the presence or absence of BMP-7 treatment corroborated the antiproliferative effects of this cytokine. This report clearly underlines the tumor-suppressive role of BMP-7 in glioma-derived cells. Taken together, our results indicate that manipulating the BMP/transforming growth factor β signaling cascade may serve as a new strategy for imaging-guided molecular-targeted therapy of malignant gliomas.

journal_name

Neoplasia

authors

Klose A,Waerzeggers Y,Monfared P,Vukicevic S,Kaijzel EL,Winkeler A,Wickenhauser C,Löwik CW,Jacobs AH

doi

10.1593/neo.101540

subject

Has Abstract

pub_date

2011-03-01 00:00:00

pages

276-85

issue

3

eissn

1522-8002

issn

1476-5586

journal_volume

13

pub_type

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