Imperial College London
Alternate

ProfessorMarinaBotto

Faculty of Medicine, Department of Immunology and Inflammation

Head of Department, Director of Bioservices
 
 
 
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Contact

 

+44 (0)20 3313 2316m.botto Website

 
 
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Assistant

 

Miss Claudia Rocchi +44 (0)20 3313 2315

 
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Location

 

9N10Commonwealth BuildingHammersmith Campus

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Summary

 

Publications

Citation

BibTex format

@article{Cortini:2017:10.1136/annrheumdis-2017-211499,
author = {Cortini, A and Ellinghaus, U and Malik, TH and Cunninghame, Graham DS and Botto, M and Vyse, TJ},
doi = {10.1136/annrheumdis-2017-211499},
journal = {Annals of the Rheumatic Diseases},
pages = {2095--2103},
title = {B cell OX40L supports T follicular helper cell development and contributes to SLE pathogenesis},
url = {http://dx.doi.org/10.1136/annrheumdis-2017-211499},
volume = {76},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - OBJECTIVES: TNFSF4 (encodes OX40L) is a susceptibility locus for systemic lupus erythematosus (SLE). Risk alleles increase TNFSF4 expression in cell lines, but the mechanism linking this effect to disease is unclear, and the OX40L-expressing cell types mediating the risk are not clearly established. Blockade of OX40L has been demonstrated to reduce disease severity in several models of autoimmunity, but not in SLE. We sought to investigate its potential therapeutic role in lupus. METHODS: We used a conditional knockout mouse system to investigate the function of OX40L on B and T lymphocytes in systemic autoimmunity. RESULTS: Physiologically, OX40L on both B and T cells contributed to the humoral immune response, but B cell OX40L supported the secondary humoral response and antibody affinity maturation. Our data also indicated that loss of B cell OX40L impeded the generation of splenic T follicular helper cells. We further show that in two models of SLE-a spontaneous congenic model and the H2-IA(bm12) graft-versus-host-induced model-loss of B cell OX40L ameliorates the autoimmune phenotype. This improvement was, in each case, accompanied by a decline in T follicular helper cell numbers. Importantly, the germline knockout did not exhibit a markedly different phenotype from the B cell knockout in these models. CONCLUSIONS: These findings contribute to a model in which genetically determined increased OX40L expression promotes human SLE by several mechanisms, contingent on its cellular expression. The improvement in pathology in two models of systemic autoimmunity indicates that OX40L is an excellent therapeutic target in SLE.
AU  - Cortini,A
AU  - Ellinghaus,U
AU  - Malik,TH
AU  - Cunninghame,Graham DS
AU  - Botto,M
AU  - Vyse,TJ
DO  - 10.1136/annrheumdis-2017-211499
EP  - 2103
PY  - 2017///
SN  - 0003-4967
SP  - 2095
TI  - B cell OX40L supports T follicular helper cell development and contributes to SLE pathogenesis
T2  - Annals of the Rheumatic Diseases
UR  - http://dx.doi.org/10.1136/annrheumdis-2017-211499
UR  - http://hdl.handle.net/10044/1/51525
VL  - 76
ER  -
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