Toggle Main Menu Toggle Search

Open Access padlockePrints

Gain-of-function STAT1 mutations impair STAT3 activity in patients with Chronic Mucocutaneous Candidiasis (CMC)

Lookup NU author(s): Dr Katherine Crossland, Dr Chun Chan, Tariq AlShehri, Dr Mario Abinun, Professor Andrew GenneryORCiD, Professor Jelena Mann, Dr Dennis LendremORCiD, Emeritus Professor Drew Rowan, Dr Desa Lilic

Downloads

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


Abstract

Signal transducer and activator of transcription 3 (STAT3)-triggered production of Th-17 cytokines mediates protective immunity against fungi. Mutations affecting the STAT3/IL-17 pathway cause selective susceptibility to fungal (Candida) infections, a hallmark of Chronic Mucocutaneous Candidiasis (CMC). In patients with autosomal-dominant (AD)-CMC we and others previously reported defective Th17 responses and underlying gain-of-function (GOF) STAT1 mutations, but how this affects STAT3 function leading to decreased IL-17 is unclear. In patients with AD-CMC, we assessed how GOF-STAT1 mutations affect STAT3 activation, DNA-binding, gene expression, cytokine production and epigenetic modifications. We excluded impaired STAT3 phosphorylation, nuclear translocation and sequestration of STAT3 into STAT1/STAT3 heterodimers and confirm significantly reduced transcription of STAT3-inducible genes (RORC/IL-17/IL-22/IL-10/c-Fos/SOCS3/c-Myc) as likely underlying mechanism. STAT binding to the high affinity sis-inducible element was intact but binding to an endogenous STAT3 DNA target was impaired. Reduced STAT3-dependent gene transcription was reversed by inhibiting STAT1 activation with fludarabine or enhancing histone, but not STAT1 or STAT3 acetylation with histone deacetylase (HDAC) inhibitors trichostatin A or ITF2357. Silencing HDAC1, HDAC2 and HDAC3 indicated a role for HDAC1 and 2. Reduced STAT3-dependent gene transcription underlies low Th-17 responses in GOF-STAT1 CMC which can be reversed by inhibiting acetylation, offering novel targets for future therapies.


Publication metadata

Author(s): Zheng J, vandeVeerdonk FL, Crossland KL, Smeekens SP, Chan CM, AlShehri T, Abinun M, Gennery AR, Mann J, Lendrem DW, Netea MG, Rowan AD, Lilic D

Publication type: Article

Publication status: Published

Journal: European Journal of Immunology

Year: 2015

Volume: 45

Issue: 10

Pages: 2834-2846

Print publication date: 01/10/2015

Online publication date: 01/09/2015

Acceptance date: 31/07/2015

ISSN (print): 0014-2980

ISSN (electronic): 1521-4141

Publisher: Wiley V C H Verlag GmbH & Co. KGaA

URL: http://dx.doi.org/10.1002/eji.201445344

DOI: 10.1002/eji.201445344


Altmetrics

Altmetrics provided by Altmetric


Funding

Funder referenceFunder name
UK-China Scholarship for Excellence
Veni grant of the Netherlands Organization for Scientific Research
Wellcome Trust Institutional Strategic Support Fund
310372ERC

Share