Format

Send to

Choose Destination
Biochem Biophys Res Commun. 2003 Nov 21;311(3):786-92.

RNA interference targeting focal adhesion kinase enhances pancreatic adenocarcinoma gemcitabine chemosensitivity.

Author information

1
Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.

Abstract

Focal adhesion kinase (FAK) is an important regulator of cellular signaling, migration, apoptosis, and cell cycle progression. We tested the hypothesis that FAK is a determinant of gemcitabine chemoresistance in pancreatic adenocarcinoma cells and examined the effect of inhibiting FAK expression on gemcitabine-induced cytotoxicity in vitro and in vivo. FAK expression was quantified by Western and Northern blots. Expression of FAK was suppressed using small interfering RNA (siRNA). Gemcitabine-induced cytotoxicity was quantified and apoptosis was characterized. Akt activity was determined by in vitro kinase assay. We assessed the therapeutic applicability of FAK siRNA in a nude mouse orthotopic xenograft model. While not affecting cellular proliferation or apoptosis in the absence of gemcitabine, FAK siRNA potentiated gemcitabine-induced cytotoxicity in vitro and in vivo. FAK siRNA treatment suppressed Akt activity, which may contribute to its chemosensitizing effect.

PMID:
14623342
DOI:
10.1016/j.bbrc.2003.10.060
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center