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Sökning: WFRF:(Yngve Ulrika 1972 ) > (2015-2019)

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1.
  • Ladds, Marcus J. G. W., et al. (författare)
  • A DHODH inhibitor increases p53 synthesis and enhances tumor cell killing by p53 degradation blockage
  • 2018
  • Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 9
  • Tidskriftsartikel (refereegranskat)abstract
    • The development of non-genotoxic therapies that activate wild-type p53 in tumors is of great interest since the discovery of p53 as a tumor suppressor. Here we report the identification of over 100 small-molecules activating p53 in cells. We elucidate the mechanism of action of a chiral tetrahydroindazole (HZ00), and through target deconvolution, we deduce that its active enantiomer (R)-HZ00, inhibits dihydroorotate dehydrogenase (DHODH). The chiral specificity of HZ05, a more potent analog, is revealed by the crystal structure of the (R)-HZ05/DHODH complex. Twelve other DHODH inhibitor chemotypes are detailed among the p53 activators, which identifies DHODH as a frequent target for structurally diverse compounds. We observe that HZ compounds accumulate cancer cells in S-phase, increase p53 synthesis, and synergize with an inhibitor of p53 degradation to reduce tumor growth in vivo. We, therefore, propose a strategy to promote cancer cell killing by p53 instead of its reversible cell cycle arresting effect.
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2.
  • Nordeman, Patrik, Docent, et al. (författare)
  • Automated GMP-production of α-[11 C]methyl-L-tryptophan using a tracer production system (TPS)
  • 2018
  • Ingår i: Journal of labelled compounds & radiopharmaceuticals. - : Wiley. - 0362-4803 .- 1099-1344. ; 61:14, s. 1106-1109
  • Tidskriftsartikel (refereegranskat)abstract
    • The radiosynthesis and GMP validation of [11 C]AMT for human use are described. Three consecutive batches were produced giving 940-3790 MBq (4%-17% RCY, decay corrected, based on [11 C]CO2 ) of the tracer. The molar activity at the end of synthesis was 19 to 35 GBq/μmol, the radiochemical purity was ≥98%, and the enantiomeric purity was >99%. While the synthesis method was automated using a new generation of synthesis equipment, tracer production system developed in house, the method should be readily applicable to other synthesis platforms with minor modifications.
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