Thrombopoietin receptor activation by myeloproliferative neoplasm associated calreticulin mutants

Author:

Chachoua Ilyas12,Pecquet Christian12,El-Khoury Mira345,Nivarthi Harini6,Albu Roxana-Irina12,Marty Caroline345,Gryshkova Vitalina12,Defour Jean-Philippe12,Vertenoeil Gaëlle12,Ngo Anna7,Koay Ann7,Raslova Hana345,Courtoy Pierre J.2,Choong Meng Ling7,Plo Isabelle345,Vainchenker William345,Kralovics Robert6,Constantinescu Stefan N.12

Affiliation:

1. Ludwig Institute for Cancer Research Brussels, Brussels, Belgium;

2. Université Catholique de Louvain and de Duve Institute, Brussels, Belgium;

3. INSERM, Unité Unité Mixte de Recherche 1170, Institut Gustave Roussy, Villejuif, France;

4. Paris-Saclay, Unité Mixte de Recherche 1170, Institut Gustave Roussy, Villejuif, France;

5. Gustave Roussy, Unité Mixte de Recherche 1170, Villejuif, France;

6. CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; and

7. Experimental Therapeutics Center, Singapore

Abstract

Key Points Calreticulin mutants responsible for myeloproliferative neoplasms specifically activate the thrombopoietin receptor and in turn JAK2. Activation of the thrombopoietin receptor requires the glycan binding site and a novel C-terminal tail of the mutant calreticulin.

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

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