TY - JOUR
T1 - HSP27 is a partner of JAK2-STAT5 and a potential therapeutic target in myelofibrosis
AU - Sevin, Margaux
AU - Kubovcakova, Lucia
AU - Pernet, Nicolas
AU - Causse, Sébastien
AU - Vitte, Franck
AU - Villeval, Jean Luc
AU - Lacout, Catherine
AU - Cordonnier, Marine
AU - Rodrigues-Lima, Fernando
AU - Chanteloup, Gaétan
AU - Mosca, Matthieu
AU - Chrétien, Marie Lorraine
AU - Bastie, Jean Noël
AU - Audia, Sylvain
AU - Sagot, Paul
AU - Ramla, Selim
AU - Martin, Laurent
AU - Gleave, Martin
AU - Mezger, Valérie
AU - Skoda, Radek
AU - Plo, Isabelle
AU - Garrido, Carmen
AU - Girodon, François
AU - De Thonel, Aurélie
N1 - Publisher Copyright:
© 2018 The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Heat shock protein 27 (HSP27/HSPB1) is a stress-inducible chaperone that facilitates cancer development by its proliferative and anti-apoptotic functions. The OGX-427 antisense oligonucleotide against HSP27 has been reported to be beneficial against idiopathic pulmonary fibrosis. Here we show that OGX-427 is effective in two murine models of thrombopoietin- and JAKV617F-induced myelofibrosis. OGX-427 limits disease progression and is associated with a reduction in spleen weight, in megakaryocyte expansion and, for the JAKV617F model, in fibrosis. HSP27 regulates the proliferation of JAK2V617F-positive cells and interacts directly with JAK2/STAT5. We also show that its expression is increased in both CD34+ circulating progenitors and in the serum of patients with JAK2-dependent myeloproliferative neoplasms with fibrosis. Our data suggest that HSP27 plays a key role in the pathophysiology of myelofibrosis and represents a new potential therapeutic target for patients with myeloproliferative neoplasms.
AB - Heat shock protein 27 (HSP27/HSPB1) is a stress-inducible chaperone that facilitates cancer development by its proliferative and anti-apoptotic functions. The OGX-427 antisense oligonucleotide against HSP27 has been reported to be beneficial against idiopathic pulmonary fibrosis. Here we show that OGX-427 is effective in two murine models of thrombopoietin- and JAKV617F-induced myelofibrosis. OGX-427 limits disease progression and is associated with a reduction in spleen weight, in megakaryocyte expansion and, for the JAKV617F model, in fibrosis. HSP27 regulates the proliferation of JAK2V617F-positive cells and interacts directly with JAK2/STAT5. We also show that its expression is increased in both CD34+ circulating progenitors and in the serum of patients with JAK2-dependent myeloproliferative neoplasms with fibrosis. Our data suggest that HSP27 plays a key role in the pathophysiology of myelofibrosis and represents a new potential therapeutic target for patients with myeloproliferative neoplasms.
UR - http://www.scopus.com/inward/record.url?scp=85045520545&partnerID=8YFLogxK
U2 - 10.1038/s41467-018-03627-9
DO - 10.1038/s41467-018-03627-9
M3 - Article
C2 - 29650953
AN - SCOPUS:85045520545
SN - 2041-1723
VL - 9
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1431
ER -