J 2019

JAK2V617F but not CALR mutations confer increased molecular responses to interferon-alpha via JAK1/STAT1 activation

CZECH, Julia, Sabrina CORDUA, Barbora WEINBERGEROVÁ, Julian BAUMEISTER, Assja CREPCIA et. al.

Basic information

Original name

JAK2V617F but not CALR mutations confer increased molecular responses to interferon-alpha via JAK1/STAT1 activation

Authors

CZECH, Julia (276 Germany), Sabrina CORDUA (208 Denmark), Barbora WEINBERGEROVÁ (203 Czech Republic, belonging to the institution), Julian BAUMEISTER (276 Germany), Assja CREPCIA (276 Germany), Lijuan HAN (276 Germany), Tiago MAIÉ (276 Germany), Ivan G. COSTA (276 Germany), Bernd DENECKE (276 Germany), Angela MAURER (276 Germany), Claudia SCHUBERT (276 Germany), Kristina FELDBERG (276 Germany), Deniz GEZER (276 Germany), Tim H. BRÜMMENDORF (276 Germany), Gerhard MÜLLER-NEWEN (276 Germany), Jiří MAYER (203 Czech Republic, belonging to the institution), Zdeněk RÁČIL (203 Czech Republic, belonging to the institution), Blanka KUBEŠOVÁ (203 Czech Republic, belonging to the institution), Trine KNUDSEN (208 Denmark), Anders L. SØRENSEN (208 Denmark), Morten HOLMSTRÖM (208 Denmark), Lasse KJÆR (208 Denmark), Vibe SKOV (208 Denmark), Thomas S. LARSEN (208 Denmark), Hans C. HASSELBALCH (208 Denmark), Nicolas CHATAIN (276 Germany) and Steffen KOSCHMIEDER (276 Germany, guarantor)

Edition

Leukemia, London, Nature Publishung, 2019, 0887-6924

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30205 Hematology

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 8.665

RIV identification code

RIV/00216224:14110/19:00108952

Organization unit

Faculty of Medicine

UT WoS

000463162400014

Keywords (in Czech)

Ph negativní myeloproliferace; JAK2V617F; CALR; interferon alfa; molekulární odpověď

Keywords in English

Ph negative myeloproliferative disease; JAK2V617F; CALR; interferon alpha; molecular response

Tags

Tags

International impact, Reviewed
Změněno: 5/5/2020 09:13, Mgr. Tereza Miškechová

Abstract

V originále

Pegylated interferon-alpha (peg-IFNa) treatment induces molecular responses (MR) in patients with myeloproliferative neoplasms (MPNs), including partial MR (PMR) in 30-40% of patients. Here, we compared the efficacy of IFNa treatment in JAK2V617F-vs. calreticulin (CALR)-mutated cells and investigated the mechanisms of differential response. Retrospective analysis of MPN patients treated with peg-IFNa demonstrated that patients harboring the JAK2V617F mutation were more likely to achieve PMR than those with mutated CALR (p = 0.004), while there was no significant difference in hematological response. In vitro experiments confirmed an upregulation of IFN-stimulated genes in JAK2V617F-positive 32D cells as well as patient samples (peripheral blood mononuclear cells and CD34+ hematopoietic stem cells) compared to their CALR-mutated counterparts, and higher IFNa doses were needed to achieve the same IFNa response in CALR- as in JAK2V617F-mutant 32D cells. Additionally, Janus-activated kinase-1 (JAK1) and signal transducers and activators of transcription 1 (STAT1) showed constitutive phosphorylation in JAK2V617F-mutated but not CALR-mutated cells, indicating priming towards an IFNa response. Moreover, IFN-induced growth arrest was counteracted by selective JAK1 inhibition but enhanced by JAK2 inhibition. In conclusion, our data suggest that, clinically, higher doses of IFNa are needed in CALR-mutated vs. JAK2V617F-positive patients and we suggest a model of JAK2V617F-JAK1/ STAT1 crosstalk leading to a priming of JAK2V617F-positive cells to IFNa resulting in differential sensitivity.