AlphaScreen®-Based Characterization of the Bifunctional Kinase/RNase IRE1α: A Novel and Atypical Drug Target

被引：12

作者：

Bouchecareilh, Marion ^{[1
,2
]}

Caruso, Marie-Elaine ^{[1
]}

Roby, Philippe ^{[3
]}

Parent, Stephane ^{[3
]}

Rouleau, Nathalie ^{[3
]}

Taouji, Said ^{[1
]}

Pluquet, Olivier ^{[1
]}

Bosse, Roger ^{[3
]}

Moenner, Michel ^{[2
]}

Chevet, Eric ^{[1
]}

机构：

[1] INSERM, U889, F-33076 Bordeaux, France

[2] INSERM, U920, F-33076 Bordeaux, France

[3] PerkinElmer Biosignal Inc, Montreal, PQ, Canada

来源：

JOURNAL OF BIOMOLECULAR SCREENING | 2010年 / 15卷 / 04期

关键词：

endoplasmic reticulum; stress; IRE1; AlphaScreen (R); UNFOLDED PROTEIN RESPONSE; ENDOPLASMIC-RETICULUM STRESS; MESSENGER-RNA; IRE1; ACTIVATION; INTEGRATION; PATHWAY; CELLS; ER;

D O I：

10.1177/1087057110363823

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Assay technologies that were originally developed for high-throughput screening (HTS) have recently proven useful in drug discovery for activities located upstream (target identification and validation) and downstream (ADMET) of HTS. Here the authors investigated and characterized the biological properties of a novel target, IRE1 alpha, a bifunctional kinase/RNase stress sensor of the endoplasmic reticulum (ER). They have developed a novel assay platform using the HTS technology AlphaScreen(R) to monitor the dimerization/oligomerization and phosphorylation properties of the cytosolic domain of IRE1a. They show in vitro that dimerization/oligomerization of the cytosolic domain of IRE1 correlated with the autophosphorylation ability of this domain and its endoribonuclease activity toward XBP1 mRNA. Using orthogonal in vitro and cell-based approaches, the authors show that the results obtained using AlphaScreen(R) were biologically relevant. Preliminary characterization of assay robustness indicates that both AlphaScreen(R) assays should be useful in HTS for the identification of IRE1 activity modulators. (Journal of Biomolecular Screening 2010:406-417)

引用

页码：406 / 417

页数：12

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