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.

Základní údaje

Originální název

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

Autoři

CZECH, Julia; Sabrina CORDUA; Barbora WEINBERGEROVÁ; Julian BAUMEISTER; Assja CREPCIA; Lijuan HAN; Tiago MAIÉ; Ivan G. COSTA; Bernd DENECKE; Angela MAURER; Claudia SCHUBERT; Kristina FELDBERG; Deniz GEZER; Tim H. BRÜMMENDORF; Gerhard MÜLLER-NEWEN; Jiří MAYER; Zdeněk RÁČIL; Blanka KUBEŠOVÁ; Trine KNUDSEN; Anders L. SØRENSEN; Morten HOLMSTRÖM; Lasse KJÆR; Vibe SKOV; Thomas S. LARSEN; Hans C. HASSELBALCH; Nicolas CHATAIN a Steffen KOSCHMIEDER

Vydání

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

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30205 Hematology

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 8.665

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14110/19:00108952

Organizační jednotka

Lékařská fakulta

EID Scopus

Klíčová slova česky

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

Klíčová slova anglicky

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

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 5. 5. 2020 09:13, Mgr. Tereza Miškechová

Anotace

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.