Raza, Shaneabbas published the artcileThe cholesterol metabolite 27-hydroxycholesterol regulates p53 activity and increases cell proliferation via MDM2 in breast cancer cells, Recommanded Product: N-((4-Acetamidophenyl)carbamothioyl)-4-(tert-butyl)benzamide, the publication is Molecular and Cellular Biochemistry (2015), 410(1-2), 187-195, database is CAplus and MEDLINE.
Estrogen is synthesized from cholesterol and high cholesterol levels are suggested to be associated with increased risk of estrogen receptor(ER)-pos. breast cancer. The cholesterol metabolite 27-hydroxycholesterol (27-OHC) was recently identified as a selective estrogen receptor modulator (SERM) and may therefore impact breast cancer progression. However, the mechanisms by which 27-OHC may contribute to breast cancer are not all known. We determined the extent to which 27-OHC regulates cell proliferation in MCF7 ER-pos. breast cancer cell line involving the tumor suppressor protein p53. We found that treatment of MCF7 cells with 27-OHC resulted reduced p53 transcriptional activity. Conversely, treatment of the ER-neg. MDA-MB 231 cells with 27-OHC induced no significant change in p53 activity. Exposure of MCF7 cells to 27-OHC was also associated with increased protein levels of the E3 ubiquitin protein ligase MDM2 and decreased levels of p53. Moreover, 27-OHC also enhanced phys. interaction between p53 and MDM2. Furthermore, 27-OHC-induced proliferation was attenuated using either the p53 activator Tenovin-1 or the MDM2 inhibitor Nutlin-3 and Mdm2 siRNA. Taken together, our results indicate that 27-OHC may contribute to ER-pos. breast cancer progression by disrupting constitutive p53 signaling in an MDM2-dependent manner.
Molecular and Cellular Biochemistry published new progress about 380315-80-0. 380315-80-0 belongs to amides-buliding-blocks, auxiliary class Apoptosis,p53, name is N-((4-Acetamidophenyl)carbamothioyl)-4-(tert-butyl)benzamide, and the molecular formula is C20H23N3O2S, Recommanded Product: N-((4-Acetamidophenyl)carbamothioyl)-4-(tert-butyl)benzamide.
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