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Articles 31 - 33 of 33
Full-Text Articles in Medicine and Health Sciences
Regulation Of The Proapoptotic Functions Of Prostate Apoptosis Response-4 (Par-4) By Casein Kinase 2 In Prostate Cancer Cells, A De Thonel, A Hazoumé, V Kochin, K Isoniemi, G Jego, E Fourmaux, A Hammann, H Mjahed, O Filhol, O Micheau, P Rocchi, V Mezger, J E Eriksson, Vivek M. Rangnekar, C Garrido
Regulation Of The Proapoptotic Functions Of Prostate Apoptosis Response-4 (Par-4) By Casein Kinase 2 In Prostate Cancer Cells, A De Thonel, A Hazoumé, V Kochin, K Isoniemi, G Jego, E Fourmaux, A Hammann, H Mjahed, O Filhol, O Micheau, P Rocchi, V Mezger, J E Eriksson, Vivek M. Rangnekar, C Garrido
Radiation Medicine Faculty Publications
The proapoptotic protein, prostate apoptosis response-4 (Par-4), acts as a tumor suppressor in prostate cancer cells. The serine/threonine kinase casein kinase 2 (CK2) has a well-reported role in prostate cancer resistance to apoptotic agents or anticancer drugs. However, the mechanistic understanding on how CK2 supports survival is far from complete. In this work, we demonstrate both in rat and humans that (i) Par-4 is a new substrate of the survival kinase CK2 and (ii) phosphorylation by CK2 impairs Par-4 proapoptotic functions. We also unravel different levels of CK2-dependent regulation of Par-4 between species. In rats, the phosphorylation by CK2 at …
Paracrine Apoptotic Effect Of P53 Mediated By Tumor Suppressor Par-4, Ravshan Burikhanov, Tripti Shrestha-Bhattarai, Nikhil Hebbar, Shirley Qiu, Yanming Zhao, Gerard P. Zambetti, Vivek M. Rangnekar
Paracrine Apoptotic Effect Of P53 Mediated By Tumor Suppressor Par-4, Ravshan Burikhanov, Tripti Shrestha-Bhattarai, Nikhil Hebbar, Shirley Qiu, Yanming Zhao, Gerard P. Zambetti, Vivek M. Rangnekar
Radiation Medicine Faculty Publications
The guardian of the genome, p53, is often mutated in cancer and may contribute to therapeutic resistance. Given that p53 is intact and functional in normal tissues, we harnessed its potential to inhibit the growth of p53-deficient cancer cells. Specific activation of p53 in normal fibroblasts selectively induced apoptosis in p53-deficient cancer cells. This paracrine effect was mediated by p53-dependent secretion of the tumor suppressor Par-4. Accordingly, the activation of p53 in normal mice, but not p53−/− or Par-4−/− mice, caused systemic elevation of Par-4, which induced apoptosis of p53-deficient tumor cells. Mechanistically, p53 …
A Feasibility Study Using Tomodirect For Craniospinal Irradiation, Ulrich W. Langner, Janelle A. Molloy, John F. Gleason Jr., Jonathan M. Feddock
A Feasibility Study Using Tomodirect For Craniospinal Irradiation, Ulrich W. Langner, Janelle A. Molloy, John F. Gleason Jr., Jonathan M. Feddock
Radiation Medicine Faculty Publications
The feasibility of delivering craniospinal irradiation (CSI) with TomoDirect is investigated. A method is proposed to generate TomoDirect plans using standard three-dimensional (3D) beam arrangements on Tomotherapy with junctioning of these fields to minimize hot or cold spots at the cranial/spinal junction. These plans are evaluated and compared to a helical Tomotherapy and a three-dimensional conformal therapy (3D CRT) plan delivered on a conventional linear accelerator (linac) for CSI. The comparison shows that a TomoDirect plan with an overlap between the cranial and spinal fields might be preferable over Tomotherapy plans because of decreased low dose to large volumes of …