Effects of Allopurinol and Oxipurinol on Pyrimidine Biosynthesis in Man

Author(s):  
T. D. Beardmore ◽  
W. N. Kelley
1960 ◽  
Vol 235 (11) ◽  
pp. 3238-3241
Author(s):  
D.W. Woolley ◽  
Conrad Maugé ◽  
Monica Cassidy

1973 ◽  
Vol 248 (13) ◽  
pp. 4782-4785
Author(s):  
Kazuhiko Ito ◽  
Haruto Uchino

1964 ◽  
Vol 239 (7) ◽  
pp. 2239-2245
Author(s):  
Raymond H. Lindsay ◽  
Hachiro Nakagawa ◽  
Philip P. Cohen

1986 ◽  
Vol 261 (32) ◽  
pp. 14891-14895
Author(s):  
A J Kemp ◽  
S D Lyons ◽  
R I Christopherson

2000 ◽  
Vol 275 (43) ◽  
pp. 33373-33378 ◽  
Author(s):  
Robert A. Copeland ◽  
Jovita Marcinkeviciene ◽  
Tasir S. Haque ◽  
Lisa M. Kopcho ◽  
Wenjun Jiang ◽  
...  

2021 ◽  
Vol 23 (Supplement_6) ◽  
pp. vi35-vi35
Author(s):  
Pranjal Sarma ◽  
Kelli N Ennis ◽  
Catherine A Behrmann ◽  
Collin Wetzel ◽  
Biplab Dasgupta ◽  
...  

Abstract Targeting pyrimidine biosynthesis has been a mainstay of chemotherapy in oncology, including frontline treatment of pancreatic, breast, and colorectal carcinomas. In glioblastoma, the targeting pyrimidine biosynthesis is a promising emerging approach for counteracting the effects of PTEN-deficiency in glioblastoma. PTEN loss triggers the activation of mTORC1, which in turn phosphorylates and activates the ribosomal protein kinases S6K1 and S6K2. We have previously shown that combination treatment of inhibitors targeting S6K1 and the TYRO3-AXL-MERTK receptor tyrosine kinases (TAM-RTKs) triggers cytotoxic responses in PTEN-deficient glioblastoma cells. Here we show brain-penetrant inactivation of S6K1 and TAM-RTKs using the S6K1 inhibitor LY-2584702 and the TAM-RTK inhibitor BMS-777607, which reduced glioblastoma tumor growth. Pharmacogenetic analysis of signal transduction indicated a key role for S6K2 in sustaining survival signaling in PTEN-deficient glioblastoma cells. Steady-state metabolomics revealed that combined inactivation of S6K1 and TAM-RTKs resulted in decreased nucleotide biosynthesis, and flux analysis indicated reduced flux of glucose to pyrimidines. Altogether the results indicate a kinase-directed therapeutic strategy for targeting S6K1 and TAM-RTKs to reduce pyrimidine biosynthesis and glioblastoma tumor growth.


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