CD28 superagonist-induced regulatory T cell expansion ameliorates mesangioproliferative glomerulonephritis in rats
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Naturally occurring regulatory T cells (Treg) are essential for the prevention of autoimmunity and overshooting immune responses to pathogens; however, the involvement of Treg in mesangioproliferative glomerulonephritis, a major cause of chronic kidney disease, remains unclear. Superagonistic CD28-specific monoclonal antibodies (CD28SA) are highly effective activators of Treg in rats.
To confirm our hypothesis that CD28SA reduces the severity of experimental glomerulonephritis, anti-Thy1 nephritis model rats were treated with CD28SA or saline.
CD28SA significantly suppressed the increase in proteinuria and serum creatinine levels. CD28SA-treated nephritic rats exhibited an increase in the infiltration of Treg in the glomeruli accompanied by infiltration of CD163-positive macrophages (“alternatively activated” macrophages). In addition, CD28SA significantly induced interleukin-10 mRNA expression in glomeruli, thereby ameliorating mesangial cell proliferation and extracellular matrix expansion.
We established a new therapeutic approach to suppressing progressive glomerulonephritis. The therapeutic value of this approach warrants further attention and preclinical studies.
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- CD28 superagonist-induced regulatory T cell expansion ameliorates mesangioproliferative glomerulonephritis in rats
Clinical and Experimental Nephrology
Volume 15, Issue 1 , pp 50-57
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- Springer Japan
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- Regulatory T cell
- “Alternatively activated” macrophage
- Industry Sectors
- Author Affiliations
- 1. Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
- 2. Department of Advanced Technology for Transplantation, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- 3. Department of Cell Biology, Institute of Nephrology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- 4. Laboratory of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
- 5. Institut für Virologie and Immunobiologie, Universtät Würzburg, Würzburg, Germany