The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Nitroaromatic radiation sensitizers substitute for oxygen in neocarzinostatin-induced DNA damage.

The ability of neocarzinostatin (NCS) chromophore to damage DNA, as manifested by strand breaks and base release, is markedly decreased under anaerobic conditions but can be restored by nitroaromatic radiation sensitizers, which by themselves have no effect. The effectiveness of these compounds is correlated with their electron affinity as measured by their one-electron reduction potentials and is inversely related to the concentration of thiol used to activate the NCS. Whereas strand breaks with thymidine 5'-aldehyde at the 5' end and released thymine are the main DNA damage products in O2, under anaerobic conditions misonidazole causes a marked increase in the release of thymine and in the formation of breaks with 5'- phosphate ends. In both cases the 3' end of the break carries a phosphate group, and the attack-site specificity of spontaneous and alkali-labile DNA strand breakage and base release are identical. In O2, misonidazole does not affect the extent of DNA damage or alter the distribution of DNA damage products found with NCS alone. The data do not distinguish whether the nitroaromatic compounds function by interacting with NCS-induced nascent damage on the DNA, by being converted by activated NCS into a DNA-damaging species, or by participating in the activation of NCS to a DNA-damaging species. The implications of these results for the treatment of hypoxic tumor cells with the combined use of radiomimetic drugs and radiation sensitizers are discussed.[1]


  1. Nitroaromatic radiation sensitizers substitute for oxygen in neocarzinostatin-induced DNA damage. Kappen, L.S., Goldberg, I.H. Proc. Natl. Acad. Sci. U.S.A. (1984) [Pubmed]
WikiGenes - Universities