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https://www.readbyqxmd.com/read/9569030/the-role-of-map4-expression-in-the-sensitivity-to-paclitaxel-and-resistance-to-vinca-alkaloids-in-p53-mutant-cells
#1
C C Zhang, J M Yang, E White, M Murphy, A Levine, W N Hait
Mutations in p53 change the sensitivity to cancer chemotherapeutic drugs. Whereas many drugs, including the vinca alkaloids, often become less effective when p53 is transcriptionally inactivated, several, most notably paclitaxel, may become more effective. In studying the underlying mechanism(s), we found that increased MAP4 expression, which occurs with transcriptionally silent p53, is associated with increased sensitivity to paclitaxel and decreased sensitivity to vinca alkaloids. Using murine fibroblasts transfected with MAP4, we directly demonstrated that the changes in drug sensitivity were associated with parallel alterations in drug-induced apoptosis and cell-cycle arrest...
March 26, 1998: Oncogene
https://www.readbyqxmd.com/read/9125775/increased-nuclear-ploidy-not-cell-proliferation-is-sustained-in-the-peroxisome-proliferator-treated-rat-liver
#2
N D Lalwani, L A Dethloff, J R Haskins, D G Robertson, F A de la Iglesia
Peroxisome proliferators are believed to induce liver tumors in rodents due to sustained increase in cell proliferation and oxidative stress resulting from the induction of peroxisomal enzymes. The objective of this study was to conduct a sequential analysis of the early changes in cell-cycle kinetics and the dynamics of rat liver DNA synthesis after treatment with a peroxisome proliferator. Immunofluorescent detection of proliferating cell nuclear antigen (PCNA) and bromodeoxyuridine (BrdU) incorporation into DNA during S phase we used to assess rat hepatocyte proliferation in vivo during dietary administration of Wy-14,643, a known peroxisome proliferator and hepatocarcinogen in rodents...
March 1997: Toxicologic Pathology
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