scholarly journals Exploiting an Asp-Glu “switch” in glycogen synthase kinase 3 to design paralog-selective inhibitors for use in acute myeloid leukemia

2018 ◽  
Vol 10 (431) ◽  
pp. eaam8460 ◽  
Author(s):  
Florence F. Wagner ◽  
Lina Benajiba ◽  
Arthur J. Campbell ◽  
Michel Weïwer ◽  
Joshua R. Sacher ◽  
...  
Blood ◽  
2012 ◽  
Vol 120 (24) ◽  
pp. 4819-4828 ◽  
Author(s):  
Vanessa Walf-Vorderwülbecke ◽  
Jasper de Boer ◽  
Sarah J. Horton ◽  
Renée van Amerongen ◽  
Natalie Proost ◽  
...  

Abstract Mixed lineage leukemia (MLL) fusion genes arise from chromosomal translocations and induce acute myeloid leukemia through a mechanism involving transcriptional deregulation of differentiation and self-renewal programs. Progression of MLL-rearranged acute myeloid leukemia is associated with increased activation of Rac GTPases. Here, we demonstrate that MLL fusion oncogenes maintain leukemia-associated Rac activity by regulating Frat gene expression, specifically Frat2. Modulation of FRAT2 leads to concomitant changes in Rac activity, and transformation of Frat knockout hematopoietic progenitor cells by MLL fusions results in leukemias displaying reduced Rac activation and increased sensitivity to chemotherapeutic drugs. FRAT2 activates Rac through a signaling mechanism that requires glycogen synthase kinase 3 and DVL. Disruption of this pathway abrogates the leukemogenic activity of MLL fusions. This suggests a rationale for the paradoxical requirement of canonical Wnt signaling and glycogen synthase kinase 3 activity for MLL fusion oncogenicity and identifies novel therapeutic targets for this disease.


2016 ◽  
Vol 15 (7) ◽  
pp. 1485-1494 ◽  
Author(s):  
Sophia Hu ◽  
Masumi Ueda ◽  
Lindsay Stetson ◽  
James Ignatz-Hoover ◽  
Stephen Moreton ◽  
...  

2015 ◽  
Vol 58 (22) ◽  
pp. 8907-8919 ◽  
Author(s):  
Theresa Neumann ◽  
Lina Benajiba ◽  
Stefan Göring ◽  
Kimberly Stegmaier ◽  
Boris Schmidt

2011 ◽  
Vol 26 (1) ◽  
pp. 35-43 ◽  
Author(s):  
Chunmei Wang ◽  
Jie Lu ◽  
Yumei Wang ◽  
Songting Bai ◽  
Yingchao Wang ◽  
...  

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0169128 ◽  
Author(s):  
Chengyin Min ◽  
Nathan Moore ◽  
Jeffrey R. Shearstone ◽  
Steven N. Quayle ◽  
Pengyu Huang ◽  
...  

2003 ◽  
Vol 13 (18) ◽  
pp. 3059-3062 ◽  
Author(s):  
Jason Witherington ◽  
Vincent Bordas ◽  
Alessandra Gaiba ◽  
Antoinette Naylor ◽  
Anthony D. Rawlings ◽  
...  

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