TY - JOUR
T1 - A STAT5B–CD9 axis determines self-renewal in hematopoietic and leukemic stem cells
AU - Kollmann, Sebastian
AU - Grausenburger, Reinhard
AU - Klampfl, Thorsten
AU - Prchal-Murphy, Michaela
AU - Bastl, Klavdija
AU - Pisa, Hanja
AU - Knab, Vanessa M.
AU - Brandstoetter, Tania
AU - Doma, Eszter
AU - Sperr, Wolfgang R.
AU - Lagger, Sabine
AU - Farlik, Matthias
AU - Moriggl, Richard
AU - Valent, Peter
AU - Halbritter, Florian
AU - Kollmann, Karoline
AU - Heller, Gerwin
AU - Maurer, Barbara
AU - Sexl, Veronika
PY - 2021/12/9
Y1 - 2021/12/9
N2 - The transcription factors signal transducer and activator of transcription 5A (STAT5A) and STAT5B are critical in hematopoiesis and leukemia. They are widely believed to have redundant functions, but we describe a unique role for STAT5B in driving the self-renewal of hematopoietic and leukemic stem cells (HSCs/LSCs). We find STAT5B to be specifically activated in HSCs and LSCs, where it induces many genes associated with quiescence and self-renewal, including the surface marker CD9. Levels of CD9 represent a prognostic marker for patients with STAT5-driven leukemia, and our findings suggest that anti-CD9 antibodies may be useful in their treatment to target and eliminate LSCs. We show that it is vital to consider STAT5A and STAT5B as distinct entities in normal and malignant hematopoiesis.
AB - The transcription factors signal transducer and activator of transcription 5A (STAT5A) and STAT5B are critical in hematopoiesis and leukemia. They are widely believed to have redundant functions, but we describe a unique role for STAT5B in driving the self-renewal of hematopoietic and leukemic stem cells (HSCs/LSCs). We find STAT5B to be specifically activated in HSCs and LSCs, where it induces many genes associated with quiescence and self-renewal, including the surface marker CD9. Levels of CD9 represent a prognostic marker for patients with STAT5-driven leukemia, and our findings suggest that anti-CD9 antibodies may be useful in their treatment to target and eliminate LSCs. We show that it is vital to consider STAT5A and STAT5B as distinct entities in normal and malignant hematopoiesis.
U2 - 10.1182/blood.2021010980
DO - 10.1182/blood.2021010980
M3 - Journal article
SN - 0006-4971
VL - 138
SP - 2347
EP - 2359
JO - Blood
JF - Blood
IS - 23
ER -