Dephosphorylation of Ser87 by ROS and TNF has been shown that necessary for the ubiquitination and degradation of the protein Bcl 2 be. However, our study showed CEP-18770 that Bcl Ver change 2 Snitrosylation through modulating NO is not involved in the phosphorylation of Bcl second Since NO played an r Induces crucial role in the ubiquitination and denitrosylation Bcl 2 in apoptosis of cancer cells by IL 24 ZD55, he suggested that Bcl 2 denitrosylation was another mechanism of dephosphorylation induced by ROS. However, protein S nitrosylation has as dependent posttranslational modification of redox Arose-dependent. Alternatively ROS probably an influence on the regulation of Bcl 2 stability t Denitrosylation or or by dephosphorylation. The exact mechanism should be further investigated.
Detecting whether the IL 24 denitrosylation Bcl 2 mediates the activation of the caspase pathway is involved, we used pharmacological manipulation as SNP and PTIO to the Bcl 2 S nitrosylation Brivanib adjust, and then the expression of the caspase protein detected in response to IL ZD55 24th The data showed that Bcl 2 induced by IL denitrosylation ZD55 24, the activation of caspase 9, caspase-3, PARP and apoptosis of cancer cells from the final results of the Western blot and flow cytometry foreign St. Moreover erh Hte NO donor SNP nitrosylation Bcl 2 S and therefore resisted cleavage of caspases. NO inhibitor PTIO had the opposite effect. Therefore, we concluded that Bcl 2 plays denitrosylaiton with ubiquitination an r Upon activation of the caspase pathway in response to IL24 ZD55 coupled important.
In summary, l Sst our study an r Important for the regulation of Bcl 2 stability t Carcinoma apoptosis mediated IL 24, 9 as shown in Figure Under basal conditions, prevents Bcl 2 S degradation nitrosylation ubiquitin which forms heterodimerswith the proapoptotic Bax protein to neutralize its properties and effector death of cancer cells to survive the transition. However, under conditions of stress, reduced nitrosation MDA7/IL 24 Bcl 2 S through down regulation of iNOS and up-regulation of TrxR1, which further results in the ubiquitination Change Bcl second Release cytochrome c, followed by degradation of Bcl 2 f Promotes the activation of caspase protease family, which is intracellularly Ren proteolysis involved and induces apoptosis in cancer cells is sufficient.
See that the increase in production and iNOS expression of Bcl-2 has been implicated in several human tumors, in conjunction, can this conclusion on the new MDA 7/IL 24 on the regulation of Bcl 2 denitrosylation base 24 a valuable mechanism for MDA 7/IL induced apoptosis in cancer care. The expression of Bcl 2 is the main component of the anti-apoptotic Bcl 2 under control A complex of several factors, including normal reactive oxygen species. Recommended singer 1, YEARS recently as a novel molecular chaperone in the endoplasmic reticulum membrane of mitochondria Ring was identified, has been shown robust cellular Protective provisions Exercise. However, the underlying mechanisms of action of the anti-apoptotic signaling 1R unclear. Here we have found that the signal f 1R cell survival Promoted by regulating Bcl-2 expression in Chinese hamster ovary cells. Although both are enriched Bcl Sig 1R and 2 high in the MAM 1R or Sig