scholarly journals Transcriptional Repression of Protein Kinase Cα via Sp1 by Wild Type p53 Is Involved in Inhibition of Multidrug Resistance 1 P-Glycoprotein Phosphorylation

2004 ◽  
Vol 280 (6) ◽  
pp. 4825-4833 ◽  
Author(s):  
Maocheng Zhan ◽  
Dihua Yu ◽  
Juehui Liu ◽  
Jonathan Hannay ◽  
Raphael E. Pollock
1991 ◽  
Vol 3 (6) ◽  
pp. 181-189 ◽  
Author(s):  
Gang Yu ◽  
Shakeel Ahmad ◽  
Angelo Aquino ◽  
Craig R. Fairchild ◽  
Jane B. Trepel ◽  
...  

1999 ◽  
Vol 13 (19) ◽  
pp. 2490-2501 ◽  
Author(s):  
M. Murphy ◽  
J. Ahn ◽  
K. K. Walker ◽  
W. H. Hoffman ◽  
R. M. Evans ◽  
...  

2017 ◽  
Vol 142 (1) ◽  
pp. 92-108
Author(s):  
Tsung-Ying Yang ◽  
Chieh-Lin Jerry Teng ◽  
Tsung-Chieh Chester Lin ◽  
Kun-Chieh Chen ◽  
Shih-Lan Hsu ◽  
...  

1987 ◽  
Vol 7 (2) ◽  
pp. 718-724
Author(s):  
K L Deuchars ◽  
R P Du ◽  
M Naik ◽  
D Evernden-Porelle ◽  
N Kartner ◽  
...  

The overexpression of a plasma membrane glycoprotein, P-glycoprotein, is strongly correlated with the expression of multidrug resistance. This phenotype (frequently observed in cell lines selected for resistance to a single drug) is characterized by cross resistance to many drugs, some of which are used in cancer chemotherapy. In the present study we showed that DNA-mediated transformants of mouse LTA cells with DNA from multidrug-resistant hamster cells acquired the multidrug resistance phenotype, that the transformants contained hamster P-glycoprotein DNA sequences, that these sequences were amplified whereas the recipient mouse P-glycoprotein sequences remained at wild-type levels, and that the overexpressed P-glycoprotein in these cells was of hamster origin. Furthermore, we showed that the hamster P-glycoprotein sequences were transfected independently of a group of genes that were originally coamplified and linked within a 1-megabase-pair region in the donor hamster genome. These data indicate that the high expression of P-glycoprotein is the only alteration required to mediate multidrug resistance.


2001 ◽  
Vol 277 (5) ◽  
pp. 3247-3257 ◽  
Author(s):  
William H. Hoffman ◽  
Siham Biade ◽  
Jack T. Zilfou ◽  
Jiandong Chen ◽  
Maureen Murphy

1996 ◽  
Vol 1 (4) ◽  
pp. 261-268 ◽  
Author(s):  
Robert L. Fine ◽  
Timothy C. Chambers ◽  
Clifford W. Sachs

1987 ◽  
Vol 7 (2) ◽  
pp. 718-724 ◽  
Author(s):  
K L Deuchars ◽  
R P Du ◽  
M Naik ◽  
D Evernden-Porelle ◽  
N Kartner ◽  
...  

The overexpression of a plasma membrane glycoprotein, P-glycoprotein, is strongly correlated with the expression of multidrug resistance. This phenotype (frequently observed in cell lines selected for resistance to a single drug) is characterized by cross resistance to many drugs, some of which are used in cancer chemotherapy. In the present study we showed that DNA-mediated transformants of mouse LTA cells with DNA from multidrug-resistant hamster cells acquired the multidrug resistance phenotype, that the transformants contained hamster P-glycoprotein DNA sequences, that these sequences were amplified whereas the recipient mouse P-glycoprotein sequences remained at wild-type levels, and that the overexpressed P-glycoprotein in these cells was of hamster origin. Furthermore, we showed that the hamster P-glycoprotein sequences were transfected independently of a group of genes that were originally coamplified and linked within a 1-megabase-pair region in the donor hamster genome. These data indicate that the high expression of P-glycoprotein is the only alteration required to mediate multidrug resistance.


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