The University of Southampton
University of Southampton Institutional Repository

Reduced expression of phosphatase PTPN2 promotes pathogenic conversion of Tregs in autoimmunity

Reduced expression of phosphatase PTPN2 promotes pathogenic conversion of Tregs in autoimmunity
Reduced expression of phosphatase PTPN2 promotes pathogenic conversion of Tregs in autoimmunity

Genetic variants at the PTPN2 locus, which encodes the tyrosine phosphatase PTPN2, cause reduced gene expression and are linked to rheumatoid arthritis (RA) and other autoimmune diseases. PTPN2 inhibits signaling through the T cell and cytokine receptors and loss of PTPN2 promotes T cell expansion and CD4 and CD8-driven autoimmunity. However, it remains unknown whether loss of PTPN2 in FoxP3+ regulatory T cells (Treg) plays a role in autoimmunity. Here we aimed to model human autoimmune-predisposing PTPN2 variants, which results in a partial loss of PTPN2 expression, in mouse models of RA. We identified that reduced expression of Ptpn2 enhanced the severity of autoimmune arthritis in the T cell dependent SKG mouse model and demonstrated that this phenotype was mediated through a Treg-intrinsic mechanism. Mechanistically, we found that through dephosphorylation of STAT3, Ptpn2 inhibits IL-6-driven pathogenic loss of FoxP3 after Tregs have acquired RORγt expression, at a stage when chromatin accessibility for STAT3-targeted IL-17 associated transcription factors is maximized. We conclude that PTPN2 promotes FoxP3 stability in mouse RORγt+ Tregs and that loss of function of PTPN2 in Tregs contributes to the association between PTPN2 and autoimmunity.

Journal Article
0021-9738
Svensson, Mattias Nd
89794735-a615-4878-adf6-f9857290bb07
Doody, Karen M
8b9a84f8-c554-4755-ac86-955f61b40e06
Schmiedel, Benjamin J
ba8ead04-6642-48b4-b4a6-b96910e17fab
Bhattacharyya, Sourya
3c06d5d5-73a7-47b1-8f3c-93e25f7ee452
Panwar, Bharat
7e9a1363-0a88-4e57-aaab-5ac67cd05353
Wiede, Florian
95ed0832-1d0c-4895-9343-8c02f7750e54
Yang, Shen
b62d5af5-48bc-41d1-88be-c364f6129a9f
Santelli, Eugenio
fe1ca0ee-a790-43bb-8cfd-c6f1ddd19996
Wu, Dennis J
7b1cf997-d45b-4de5-bcca-6c369bf8b8ee
Sacchetti, Cristiano
25880c6d-7403-4569-9255-e46916aa3f0a
Gujar, Ravindra
701be838-cdbc-4e40-b73b-03992d290fe1
Seumois, Grégory
0be7d3d6-5526-458c-aa5c-cce52410a2ed
Kiosses, William B
efe6fd06-50d9-4477-9ef2-2cde32263acb
Aubry, Isabelle
0ddf00c7-0321-4237-95ee-4f799a9aa0f9
Kim, Gisen
59b334a2-e58d-4228-ae2d-e0ac00787db3
Mydel, Piotr
44c80e4e-ad53-4cca-a9f3-8fd54d8350e2
Sakaguchi, Shimon
1b0fc352-cbbf-43f1-8b01-7d09848609f9
Kronenberg, Mitchell
80aa71cb-4e8e-46b9-95c9-2cabedeb7bf0
Tiganis, Tony
a39d0ac1-a717-451b-89d2-515ce0af5d80
Tremblay, Michel L
6dc24563-0597-494b-8f41-4badab9a2403
Ay, Ferhat
c43aed4d-b4ea-4206-9a2b-520e0ed75ae7
Vijayanand, Pandurangan
79514f33-66cf-47cc-a8fa-46bbfc21b7d1
Bottini, Nunzio
fd9ec48f-5794-4026-934d-4deb91064fef
Svensson, Mattias Nd
89794735-a615-4878-adf6-f9857290bb07
Doody, Karen M
8b9a84f8-c554-4755-ac86-955f61b40e06
Schmiedel, Benjamin J
ba8ead04-6642-48b4-b4a6-b96910e17fab
Bhattacharyya, Sourya
3c06d5d5-73a7-47b1-8f3c-93e25f7ee452
Panwar, Bharat
7e9a1363-0a88-4e57-aaab-5ac67cd05353
Wiede, Florian
95ed0832-1d0c-4895-9343-8c02f7750e54
Yang, Shen
b62d5af5-48bc-41d1-88be-c364f6129a9f
Santelli, Eugenio
fe1ca0ee-a790-43bb-8cfd-c6f1ddd19996
Wu, Dennis J
7b1cf997-d45b-4de5-bcca-6c369bf8b8ee
Sacchetti, Cristiano
25880c6d-7403-4569-9255-e46916aa3f0a
Gujar, Ravindra
701be838-cdbc-4e40-b73b-03992d290fe1
Seumois, Grégory
0be7d3d6-5526-458c-aa5c-cce52410a2ed
Kiosses, William B
efe6fd06-50d9-4477-9ef2-2cde32263acb
Aubry, Isabelle
0ddf00c7-0321-4237-95ee-4f799a9aa0f9
Kim, Gisen
59b334a2-e58d-4228-ae2d-e0ac00787db3
Mydel, Piotr
44c80e4e-ad53-4cca-a9f3-8fd54d8350e2
Sakaguchi, Shimon
1b0fc352-cbbf-43f1-8b01-7d09848609f9
Kronenberg, Mitchell
80aa71cb-4e8e-46b9-95c9-2cabedeb7bf0
Tiganis, Tony
a39d0ac1-a717-451b-89d2-515ce0af5d80
Tremblay, Michel L
6dc24563-0597-494b-8f41-4badab9a2403
Ay, Ferhat
c43aed4d-b4ea-4206-9a2b-520e0ed75ae7
Vijayanand, Pandurangan
79514f33-66cf-47cc-a8fa-46bbfc21b7d1
Bottini, Nunzio
fd9ec48f-5794-4026-934d-4deb91064fef

Svensson, Mattias Nd, Doody, Karen M, Schmiedel, Benjamin J, Bhattacharyya, Sourya, Panwar, Bharat, Wiede, Florian, Yang, Shen, Santelli, Eugenio, Wu, Dennis J, Sacchetti, Cristiano, Gujar, Ravindra, Seumois, Grégory, Kiosses, William B, Aubry, Isabelle, Kim, Gisen, Mydel, Piotr, Sakaguchi, Shimon, Kronenberg, Mitchell, Tiganis, Tony, Tremblay, Michel L, Ay, Ferhat, Vijayanand, Pandurangan and Bottini, Nunzio (2019) Reduced expression of phosphatase PTPN2 promotes pathogenic conversion of Tregs in autoimmunity. Journal of Clinical Investigation. (doi:10.1172/JCI123267).

Record type: Article

Abstract

Genetic variants at the PTPN2 locus, which encodes the tyrosine phosphatase PTPN2, cause reduced gene expression and are linked to rheumatoid arthritis (RA) and other autoimmune diseases. PTPN2 inhibits signaling through the T cell and cytokine receptors and loss of PTPN2 promotes T cell expansion and CD4 and CD8-driven autoimmunity. However, it remains unknown whether loss of PTPN2 in FoxP3+ regulatory T cells (Treg) plays a role in autoimmunity. Here we aimed to model human autoimmune-predisposing PTPN2 variants, which results in a partial loss of PTPN2 expression, in mouse models of RA. We identified that reduced expression of Ptpn2 enhanced the severity of autoimmune arthritis in the T cell dependent SKG mouse model and demonstrated that this phenotype was mediated through a Treg-intrinsic mechanism. Mechanistically, we found that through dephosphorylation of STAT3, Ptpn2 inhibits IL-6-driven pathogenic loss of FoxP3 after Tregs have acquired RORγt expression, at a stage when chromatin accessibility for STAT3-targeted IL-17 associated transcription factors is maximized. We conclude that PTPN2 promotes FoxP3 stability in mouse RORγt+ Tregs and that loss of function of PTPN2 in Tregs contributes to the association between PTPN2 and autoimmunity.

Text
JCI accepted - Accepted Manuscript
Download (13MB)

More information

Accepted/In Press date: 3 January 2019
e-pub ahead of print date: 8 January 2019
Keywords: Journal Article

Identifiers

Local EPrints ID: 428014
URI: http://eprints.soton.ac.uk/id/eprint/428014
ISSN: 0021-9738
PURE UUID: b624526d-9600-4599-9092-5dcdb98cfe49
ORCID for Pandurangan Vijayanand: ORCID iD orcid.org/0000-0001-7067-9723

Catalogue record

Date deposited: 06 Feb 2019 17:30
Last modified: 15 Mar 2024 23:51

Export record

Altmetrics

Contributors

Author: Mattias Nd Svensson
Author: Karen M Doody
Author: Benjamin J Schmiedel
Author: Sourya Bhattacharyya
Author: Bharat Panwar
Author: Florian Wiede
Author: Shen Yang
Author: Eugenio Santelli
Author: Dennis J Wu
Author: Cristiano Sacchetti
Author: Ravindra Gujar
Author: Grégory Seumois
Author: William B Kiosses
Author: Isabelle Aubry
Author: Gisen Kim
Author: Piotr Mydel
Author: Shimon Sakaguchi
Author: Mitchell Kronenberg
Author: Tony Tiganis
Author: Michel L Tremblay
Author: Ferhat Ay
Author: Pandurangan Vijayanand ORCID iD
Author: Nunzio Bottini

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×