Inhibition of the TWEAK/Fn14 pathway attenuates renal disease in nephrotoxic serum nephritis

Yumin Xia, Sean R. Campbell, Anna Broder, Leal Herlitz, Maria Abadi, Ping Wu, Jennifer S. Michaelson, Linda C. Burkly, Chaim Putterman

Research output: Contribution to journalArticle

69 Scopus citations

Abstract

Previously it was shown that the TNF superfamily member TWEAK (TNFSF12) acts through its receptor, Fn14, to promote proinflammatory responses in kidney cells, including the production of MCP-1, RANTES, IP-10 and KC. In addition, the TWEAK/Fn14 pathway promotes mesangial cell proliferation, vascular cell activation, and renal cell death. To study the relevance of the TWEAK/Fn14 pathway in the pathogenesis of antibody-induced nephritis using the mouse model of nephrotoxic serum nephritis (NTN), we induced NTN by passive transfer of rabbit anti-glomerular antibodies into Fn14 knockout (KO) and wild type (WT) mice. Severe proteinuria as well as renal histopathology were induced in WT but not in Fn14 KO mice. Similarly, a pharmacologic approach of anti-TWEAK mAb administration into WT mice in the NTN model significantly ameliorated proteinuria and improved kidney histology. Anti-TWEAK treatment did not affect the generation of mouse anti-rabbit antibodies; however, within the kidney there was a significant decrease in glomerular immunoglobulin deposition, as well as macrophage infiltrates and tubulointerstitial fibrosis. The mechanism of action is most likely due to reductions in downstream targets of TWEAK/Fn14 signaling, including reduced renal expression of MCP-1, VCAM-1, IP-10, RANTES as well as Fn14 itself, and other molecular pathways associated with fibrosis in anti-TWEAK treated mice. Thus, TWEAK/Fn14 interactions are instrumental in the pathogenesis of nephritis in the NTN model, apparently mediating a cascade of pathologic events locally in the kidney rather than by impacting the systemic immune response. Disrupting TWEAK/Fn14 interactions may be an innovative kidney-protective approach for the treatment of lupus nephritis and other antibody-induced renal diseases.

Original languageEnglish (US)
Pages (from-to)108-121
Number of pages14
JournalClinical Immunology
Volume145
Issue number2
DOIs
StatePublished - Nov 1 2012

Keywords

  • Fn14
  • Nephrotoxic serum nephritis
  • Systemic lupus erythematosus (SLE)
  • TWEAK

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

Fingerprint Dive into the research topics of 'Inhibition of the TWEAK/Fn14 pathway attenuates renal disease in nephrotoxic serum nephritis'. Together they form a unique fingerprint.

  • Cite this

    Xia, Y., Campbell, S. R., Broder, A., Herlitz, L., Abadi, M., Wu, P., Michaelson, J. S., Burkly, L. C., & Putterman, C. (2012). Inhibition of the TWEAK/Fn14 pathway attenuates renal disease in nephrotoxic serum nephritis. Clinical Immunology, 145(2), 108-121. https://doi.org/10.1016/j.clim.2012.08.008