Toggle Main Menu Toggle Search

Open Access padlockePrints

NF kappa B modulators in a model of glucocorticoid resistant, childhood acute lymphoblastic leukemia

Lookup NU author(s): Dr Lindsay Nicholson, Dr Andrew Hall, Dr Chris RedfernORCiD, Professor Julie Irving

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

Glucocorticoids (GCs) are pivotal agents in the treatment of childhood acute lymphoblastic leukaemia (ALL) but the molecular basis of GC-resistance remains unclear. Expression-array studies have shown that commonly upregulated genes associated with GC-sensitivity include GR, glucocorticoid-induced leucine zipper (GILZ) and I kappa B alpha, which all negatively interact with components of the pro-survival NF kappa B pathway and therefore may be critical determinants of GC-sensitivity. We have investigated these regulators and their effect on NF kappa B activity in GC-resistant descendents of the B-lineage ALL cell line, PreB 697. We show that while differential up regulation of the modulators (GILZ, GR and I kappa B alpha) was demonstrated in GC-sensitive compared to GC-resistant sub-lines, this was not coupled with altered nuclear translocation or functionality of the RelA, p50 or c-Rel subunits of NF kappa B. Thus, GC-resistance in the PreB 697 cell line model is not mediated by NF kappa B, however further investigation of the impact of these GC-sensitive associated proteins on other survival pathways, such as the RAS-RAF-MEK-ERK pathway, is warranted. (C) 2010 Elsevier Ltd. All rights reserved.


Publication metadata

Author(s): Nicholson L, Hall AG, Redfern CP, Irving J

Publication type: Article

Publication status: Published

Journal: Leukemia Research

Year: 2010

Volume: 34

Issue: 10

Pages: 1366-1373

Print publication date: 01/10/2010

ISSN (print): 0145-2126

ISSN (electronic): 1873-5835

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.leukres.2009.12.014

DOI: 10.1016/j.leukres.2009.12.014


Altmetrics

Altmetrics provided by Altmetric


Share