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The mammalian target of rapamycin (mTOR) plays an essential role in the regulation of cell growth, proliferation and apoptosis. Raptor, the regulatory associated protein of mTOR, is an important member in this signaling pathway. In the present report, we identified and characterized a novel...
Cdc6 play crucial roles in DNA replication and carcinogenesis. The biological significance of the Cdc6 G1321A polymorphism (V441I, rs13706) is still not elucidated. Here we examined the influence of this polymorphism on the function of Cdc6 and the individual's susceptibility to non-Hodgkin...
DNA mismatch repair (MMR) within human cells is hypothesized to occur primarily at the replication fork. However, experimental models measuring MMR activity at specific phases of the cell cycle and during genomic DNA synthesis are lacking. We have investigated MMR activity within the nuclear...
The aldo-keto reductase AKR1C3, has been shown to regulate myelopoiesis via its ability to metabolise prostaglandin D 2 (PGD 2 ). Other studies have demonstrated the oxidative activation of polycyclic aromatic hydrocarbon (PAH) procarcinogens by AKR1C3 in cell-free systems. This is the first...
Vinyl carbamate (VC) is derived from ethyl carbamate (EC), a chemical found in alcoholic beverages and fermented foods. The objectives of this study were to characterize the formation of lung tumors induced by VC in F 1 (Big Blue ® x A/J) mice, and to identify the mutations formed in the K ras 2...
Spaceflight represents a complex environmental condition in which several interacting factors such as cosmic radiation, microgravity and space magnetic fields are involved, which may provoke stress responses and jeopardize genome integrity. Given the inherent property of epigenetic modifications...
Acetaldehyde (AA) was tested along with two other crosslinking agents: formaldehyde (FA), an inducer of DNA–protein crosslinks (DPCs) and mitomycin C (MMC), an inducer of interstrand crosslinks (ICLs), to find out whether the mechanism of action of AA resembles more MMC or FA. Using a...
The objective of the study was to investigate effects of 872 MHz radiofrequency (RF) radiation on intracellular reactive oxygen species (ROS) production and DNA damage at a relatively high SAR value (5 W/kg). The experiments also involved combined exposure to RF radiation and menadione, a...
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