Polyamine dependence of Chinese hamster ovary cells in serum-free culture is due to deficient arginase activity

1982 ◽  
Vol 721 (4) ◽  
pp. 321-327 ◽  
Author(s):  
Erkki Hölttä ◽  
Pirkko Pohjanpelto
1983 ◽  
Vol 210 (3) ◽  
pp. 945-948 ◽  
Author(s):  
E Hölttä ◽  
P Pohjanpelto

Starvation of the polyamine-dependent Chinese-hamster ovary cells for ornithine or ornithine-derived polyamines in serum-free culture resulted in the formation of cadaverine and its aminopropyl derivatives, N-(3-aminopropyl)cadaverine and NN'-bis(3-aminopropyl)cadaverine. The synthesis of these unusual amines was inhibited by treatment of the cells with DL-2-difluoromethylornithine, a specific inhibitor of ornithine decarboxylase (EC 4.1.1.17). In the absence of ornithine (the normal substrate), ornithine decarboxylase thus appeared to catalyse the decarboxylation of lysine to cadaverine. Cell proliferation was markedly inhibited by ornithine deprivation of the cells, and further depressed by exposure of the cultures to difluoromethylornithine.


2013 ◽  
Vol 30 (5) ◽  
pp. 563-572 ◽  
Author(s):  
Ana Rita Costa ◽  
Joanne Withers ◽  
Maria Elisa Rodrigues ◽  
Niaobh McLoughlin ◽  
Mariana Henriques ◽  
...  

2004 ◽  
Vol 98 (6) ◽  
pp. 487-489 ◽  
Author(s):  
Hideki Yamaji ◽  
Kentaro Sakai ◽  
Tsukasa Joho ◽  
Eiji Izumoto ◽  
Hideki Fukuda

2007 ◽  
Vol 75 (5) ◽  
pp. 983-987 ◽  
Author(s):  
M. Fujiwara ◽  
R. Tsukada ◽  
Y. Tsujinaga ◽  
M. Takagi

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