2024-03-29T10:09:34Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/973142017-01-26T09:55:40Zcom_10261_22com_10261_1col_10261_275
The C-terminal module IV of connective tissue growth factor is a novel immune modulator of the Th17 response
Sánchez-López, Elsa
Ortiz, Alberto
Ruiz-Ortega, Marta
Instituto de Salud Carlos III
Comunidad de Madrid
Sociedad Española de Nefrología
Fundación Lilly
Instituto Reina Sofía de Investigación en Nefrología (España)
TGF-β
Th17 cells
Inflammation
CCN2/ IL-17A
et al.
Connective tissue growth factor (CTGF/CCN2) is a matricellular protein susceptible to proteolytic degradation. CCN2 levels have been suggested as a potential risk biomarker in several chronic diseases. In body fluids, CCN2 full-length and its degradation fragments can be found; however, their in vivo effects are far from being elucidated. CCN2 was described as a profibrotic mediator, but this concept is changing to a proinflammatory cytokine. In vitro, CCN2 full-length and its C-terminal module IV (CCN2(IV)) exert proinflammatory properties. Emerging evidence suggest that Th17 cells, and its effector cytokine IL-17A, participate in chronic inflammatory diseases. Our aim was to explore whether CCN2(IV) could regulate the Th17 response. In vitro, stimulation of human naive CD4 + T lymphocytes with CCN2(IV) resulted in differentiation to Th17 phenotype. The in vivo effects of CCN2(IV) were studied in C57BL/6 mice. Intraperitoneal administration of recombinant CCN2(IV) did not change serum IL-17A levels, but caused an activation of the Th17 response in the kidney, characterized by interstitial infiltration of Th17 (IL17A +/CD4 +) cells and upregulation of proinflammatory mediators. In CCN2(IV)-injected mice, elevated renal levels of Th17-related factors (IL-17A, IL-6, STAT3 and RORγt) were found, whereas Th1/Th2 cytokines or Treg-related factors (TGF-β and Foxp-3) were not modified. Treatment with an anti-IL-17A neutralizing antibody diminished CCN2(IV)-induced renal inflammation. Our findings unveil that the C-terminal module of CCN2 induces the Th17 differentiation of human Th17 cells and causes a renal Th17 inflammatory response. Furthermore, these data bear out that IL-17A targeting is a promising tool for chronic inflammatory diseases, including renal pathologies. © 2013 USCAP, Inc. All rights reserved.
2014-05-27T11:57:09Z
2014-05-27T11:57:09Z
2013
2014-05-27T11:57:09Z
artículo
Laboratory Investigation 93(7): 812-824 (2013)
http://hdl.handle.net/10261/97314
10.1038/labinvest.2013.67
http://dx.doi.org/10.13039/501100004587
http://dx.doi.org/10.13039/100012818
eng
Sí
S2010/BMD-2321/Fibroteam
closedAccess
Nature Publishing Group