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IL11 is elevated in systemic sclerosis and IL11-dependent ERK signaling underlies TGFβ-mediated activation of dermal fibroblasts
- Source :
- Rheumatology, Rheumatology (Oxford, England)
- Publication Year :
- 2021
- Publisher :
- Oxford University Press (OUP), 2021.
-
Abstract
- Objectives: interleukin 11 (IL11) is highly upregulated in skin and lung fibroblasts from patients with systemic sclerosis (SSc). Here we tested whether IL11 is mechanistically linked with activation of human dermal fibroblasts (HDFs) from patients with SSc or controls. Methods: we measured serum IL11 levels in volunteers and patients with early diffuse SSc and manipulated IL11 signalling in HDFs using gain- and loss-of-function approaches that we combined with molecular and cellular phenotyping. Results: in patients with SSc, serum IL11 levels are elevated as compared to healthy controls. All transforming growth factor beta (TGFβ) isoforms induced IL11 secretion from HDFs, which highly express IL11RA and the gp130 co-receptor, suggestive of an autocrine loop of IL11 activity in HDFs. IL11 stimulated ERK activation in HDFs and resulted in HDF-to-myofibroblast transformation and extracellular matrix secretion. The pro-fibrotic action of IL11 in HDFs appeared unrelated to STAT3 activity, independent of TGFβ upregulation and was not associated with phosphorylation of SMAD2/3. Inhibition of IL11 signaling using either a neutralizing antibody against IL11 or siRNA against IL11RA reduced TGFβ-induced HDF proliferation, matrix production and cell migration, which was phenocopied by pharmacologic inhibition of ERK. Conclusions: these data reveal that autocrine IL11-dependent ERK activity alone, or downstream of TGFβ stimulation, promotes fibrosis phenotypes in dermal fibroblasts and suggest IL11 as a potential therapeutic target in SSc.<br />Singapore STaR Awards; National Medical Research Council (NMRC) Centre Grants; BMRC; Goh Foundation;Tanoto Foundation; Duke-NUS; SingHealth Core Funding
- Subjects :
- 0301 basic medicine
MAPK/ERK pathway
systemic sclerosis
MAP Kinase Signaling System
Enzyme-Linked Immunosorbent Assay
IL11
IL11RA
Systemic sclerosis
TGFβ2
Antibody therapy
Fibrosis
Neutralizing antibody
Extracellular matrix
03 medical and health sciences
0302 clinical medicine
Rheumatology
Downregulation and upregulation
medicine
Humans
Pharmacology (medical)
Interleukin-11 Receptor alpha Subunit
Autocrine signalling
STAT3
AcademicSubjects/MED00360
antibody therapy
Cells, Cultured
Skin
Scleroderma, Systemic
biology
integumentary system
business.industry
fibrosis
neutralizing antibody
Transforming growth factor beta
Clinical Science
Glycoprotein 130
medicine.disease
Interleukin-11
030104 developmental biology
Gene Expression Regulation
030220 oncology & carcinogenesis
Cancer research
biology.protein
RNA
Medicine
business
Biomarkers
Signal Transduction
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Rheumatology, Rheumatology (Oxford, England)
- Accession number :
- edsair.doi.dedup.....7833e40a14eeb4a6d498b16f0981b2c5