TY - JOUR
T1 - SATB1 in malignant T cells
AU - Fredholm, Simon Mayland
AU - Willerslev-Olsen, Andreas
AU - Met, Özcan
AU - Kubat, Linda
AU - Gluud, Maria
AU - Mathiasen, Sarah L.
AU - Friese, Christina
AU - Blümel, Edda
AU - Petersen, David Leander
AU - Hu, Tengpeng
AU - Nastasi, Claudia
AU - Lindahl, Lise M.
AU - Buus, Terkild Brink
AU - Krejsgaard, Thorbjørn Frej
AU - Wasik, Mariusz A.
AU - Kopp, Katharina Luise Maria
AU - Koralov, Sergei B.
AU - Persson, Jenny L.
AU - Bonefeld, Charlotte Menne
AU - Geisler, Carsten
AU - Andersen, Anders Woetmann
AU - Iversen, Lars
AU - Becker, Jürgen C.
AU - Ødum, Niels
N1 - Copyright © 2018 The Authors. Published by Elsevier Inc. All rights reserved.
PY - 2018/8
Y1 - 2018/8
N2 - Deficient expression of SATB1 hampers thymocyte development and results in inept T-cell lineages. Recent data implicate dysregulated SATB1 expression in the pathogenesis of mycosis fungoides, the most frequent variant of cutaneous T-cell lymphoma. Here, we report on a disease stage-associated decrease of SATB1 expression and an inverse expression of STAT5 and SATB1 in situ. STAT5 inhibited SATB1 expression through induction of microRNA-155. Decreased SATB1 expression triggered enhanced expression of IL-5 and IL-9 (but not IL-6 and IL-32), whereas increased SATB1 expression had the opposite effect, indicating that the microRNA-155 target SATB1 is a repressor of IL-5 and IL-9 in malignant T cells. In accordance, inhibition of STAT5 and its upstream activator JAK3 triggered increased SATB1 expression and a concomitant suppression of IL-5 and IL-9 expression in malignant T cells. In conclusion, we provide a mechanistic link between the proto-oncogenic JAK3/STAT5/microRNA-155 pathway, SATB1, and cytokines linked to CTCL severity and progression, indicating that SATB1 dysregulation is involved in cutaneous T-cell lymphoma pathogenesis.
AB - Deficient expression of SATB1 hampers thymocyte development and results in inept T-cell lineages. Recent data implicate dysregulated SATB1 expression in the pathogenesis of mycosis fungoides, the most frequent variant of cutaneous T-cell lymphoma. Here, we report on a disease stage-associated decrease of SATB1 expression and an inverse expression of STAT5 and SATB1 in situ. STAT5 inhibited SATB1 expression through induction of microRNA-155. Decreased SATB1 expression triggered enhanced expression of IL-5 and IL-9 (but not IL-6 and IL-32), whereas increased SATB1 expression had the opposite effect, indicating that the microRNA-155 target SATB1 is a repressor of IL-5 and IL-9 in malignant T cells. In accordance, inhibition of STAT5 and its upstream activator JAK3 triggered increased SATB1 expression and a concomitant suppression of IL-5 and IL-9 expression in malignant T cells. In conclusion, we provide a mechanistic link between the proto-oncogenic JAK3/STAT5/microRNA-155 pathway, SATB1, and cytokines linked to CTCL severity and progression, indicating that SATB1 dysregulation is involved in cutaneous T-cell lymphoma pathogenesis.
U2 - 10.1016/j.jid.2018.03.1526
DO - 10.1016/j.jid.2018.03.1526
M3 - Journal article
C2 - 29751003
SN - 0022-202X
VL - 138
SP - 1805
EP - 1815
JO - The Journal of Investigative Dermatology
JF - The Journal of Investigative Dermatology
IS - 8
ER -