Article (Scientific journals)
RIP3 antagonizes a TSC2-mediated pro-survival pathway in glioblastoma cell death.
Fettweis, Grégory; Di Valentin, Emmanuel; L'homme, Laurent et al.
2017In Biochimica et Biophysica Acta
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Keywords :
Autophagy regulation; Glioblastoma; MAP kinases; Photodynamic therapy; Programmed necrosis
Abstract :
[en] Glioblastomas are the deadliest type of brain cancer and are frequently associated with poor prognosis and a high degree of recurrence despite removal by surgical resection and treatment by chemo- and radio-therapy. Photodynamic therapy (PDT) is a treatment well known to induce mainly necrotic and apoptotic cell death in solid tumors. 5-Aminolevulinic acid (5-ALA)-based PDT was recently shown to sensitize human glioblastoma cells (LN-18) to a RIP3 (Receptor Interacting Protein 3)-dependent cell death which is counter-acted by activation of autophagy. These promising results led us to investigate the pathways involved in cell death and survival mechanisms occurring in glioblastoma following PDT. In the present study, we describe a new TSC2 (Tuberous Sclerosis 2)-dependent survival pathway implicating MK2 (MAPKAPK2) kinase and 14-3-3 proteins which conducts to the activation of a pro-survival autophagy. Moreover, we characterized a new RIP3/TSC2 complex where RIP3 is suggested to promote cell death by targeting TSC2-dependent survival pathway. These results highlight (i) a new role of TSC2 to protect glioblastoma against PDT-induced cell death and (ii) TSC2 and 14-3-3 as new RIP3 partners.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Fettweis, Grégory  ;  Université de Liège > GIGA-R : Virologie - Immunologie
Di Valentin, Emmanuel  ;  Université de Liège > Département des sciences de la vie > GIGA-R : Virologie et immunologie
L'homme, Laurent
Lassence, Cédric 
Dequiedt, Franck  ;  Université de Liège > Département des Sciences de la vie > GIGA-Research
Fillet, Marianne  ;  Université de Liège > Département de pharmacie > Analyse des médicaments
Coupienne, Isabelle
Piette, Jacques ;  Université de Liège > Département des sciences de la vie > GIGA-R : Virologie et immunologie
Language :
English
Title :
RIP3 antagonizes a TSC2-mediated pro-survival pathway in glioblastoma cell death.
Publication date :
2017
Journal title :
Biochimica et Biophysica Acta
ISSN :
0006-3002
eISSN :
1878-2434
Publisher :
Elsevier, Amsterdam, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2016. Published by Elsevier B.V.
Available on ORBi :
since 12 April 2017

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