Skip to main content

Urokinase plasminogen activator receptor (uPAR) expression is reduced by tyrosine kinase inhibitors

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Skogseth H, Larsson E, Halgunset J. Urokinase plasminogen activator receptor (uPAR) expression is reduced by tyrosine kinase inhibitors. APMIS 2006;114:307–13.

Previously we reported that tyrosine kinase inhibitors (TKI) produced a reduction in uPA expression in prostatic cancer cells, and that TKI-treated cells were less invasive compared to untreated cells. Nevertheless, no change in cell migration was observed when TKI-treated cells were supplied with external uPA, thus indicating more complex mechanisms leading to decreased cell invasion. uPAR expression was measured with an enzyme- linked immunosorbent assay (ELISA) in PC-3 and DU-145 prostate carcinoma cells treated with the two TKI genistein and AG-1478. uPAR mRNA levels were measured with real-time reverse transcriptase-polymerase chain reaction (RT-PCR). uPAR immunocytochemistry was used to examine the receptor distribution in cells grown on a reconstituted basal lamina. Immunocytochemistry showed an intense uPAR immunostaining in invading cells, particularly in the leading edge membrane. Treatment with genistein and AG-1478 led to a decreased expression of uPAR in DU-145, but not in PC-3. Furthermore, a reduction of uPAR mRNA was found in TKI-treated DU-145 cells, while PC-3 was not affected. Our results indicate a possible role of TKI as cancer suppressors by acting as a regulator of uPAR expression.

Keywords: AG-1478; Prostate cancer; genistein; uPAR

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1600-0463.2006.apm_248.x

Affiliations: Department of Laboratory Medicine, Children's and Women's Health, Faculty of Medicine, Norwegian University of Science and Technology, and

Publication date: April 1, 2006

mksg/apm/2006/00000114/00000004/art00010
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more