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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Med+Chem
2014 ; 57
(19
): 7916-32
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
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English Wikipedia
Identification of the first inhibitor of the GBP1:PIM1 interaction Implications
for the development of a new class of anticancer agents against paclitaxel
resistant cancer cells
#MMPMID25211704
Andreoli M
; Persico M
; Kumar A
; Orteca N
; Kumar V
; Pepe A
; Mahalingam S
; Alegria AE
; Petrella L
; Sevciunaite L
; Camperchioli A
; Mariani M
; Di Dato A
; Novellino E
; Scambia G
; Malhotra SV
; Ferlini C
; Fattorusso C
J Med Chem
2014[Oct]; 57
(19
): 7916-32
PMID25211704
show ga
Class III ?-tubulin plays a prominent role in the development of drug resistance
to paclitaxel by allowing the incorporation of the GBP1 GTPase into microtubules.
Once in the cytoskeleton, GBP1 binds to prosurvival kinases such as PIM1 and
initiates a signaling pathway that induces resistance to paclitaxel. Therefore,
the inhibition of the GBP1:PIM1 interaction could potentially revert resistance
to paclitaxel. A panel of 44 4-azapodophyllotoxin derivatives was screened in the
NCI-60 cell panel. The result is that 31 are active and the comparative analysis
demonstrated specific activity in paclitaxel-resistant cells. Using surface
plasmon resonance, we were able to prove that NSC756093 is a potent in vitro
inhibitor of the GBP1:PIM1 interaction and that this property is maintained in
vivo in ovarian cancer cells resistant to paclitaxel. Through bioinformatics,
molecular modeling, and mutagenesis studies, we identified the putative NSC756093
binding site at the interface between the helical and the LG domain of GBP1.
According to our results by binding to this site, the NSC756093 compound is able
to stabilize a conformation of GBP1 not suitable for binding to PIM1.