BTK inhibition ameliorates kidney disease in spontaneous lupus nephritis.
Clin Immunol
; 197: 205-218, 2018 12.
Article
em En
| MEDLINE
| ID: mdl-30339790
ABSTRACT
Lupus nephritis is a common disease manifestation of SLE, in which immune complex deposition and macrophage activation are important contributors to disease pathogenesis. Bruton's tyrosine kinase (BTK) plays an important role in both B cell and FcgammaR mediated myeloid cell activation. In the current study, we examined the efficacy of BI-BTK-1, a recently described irreversible BTK inhibitor, in the classical NZBâ¯×â¯NZW F1 (NZB/W) and MRL/lpr spontaneous mouse models of SLE. NZB/W mice were randomly assigned to a treatment (0.3â¯mg/kg, 1â¯mg/kg, 3â¯mg/kg and 10â¯mg/kg) or control group and began treatment at 22â¯weeks of age. The experimental setup was similar in MRL/lpr mice, but with a single treated (10â¯mg/kg, beginning at 8-9â¯weeks of age) and control group. A separate experiment was performed in the MRL/lpr strain to assess the ability of BI-BTK-1 to reverse established kidney disease. Early treatment with BI-BTK-1 significantly protected NZB/W and MRL/lpr mice from the development of proteinuria, correlating with significant renal histological protection, decreased anti-DNA titers, and increased survival in both strains. BI-BTK-1 treated mice displayed a significant decrease in nephritis-associated inflammatory mediators (e.g. LCN2 and IL-6) in the kidney, combined with a significant inhibition of immune cell infiltration and accumulation. Importantly, BI-BTK-1 treatment resulted in the reversal of established kidney disease. BTK inhibition significantly reduced total B cell numbers and all B cell subsets (immature, transitional, follicular, marginal zone, and class switched) in the spleen of NZB/W mice. Overall, the significant efficacy of BI-BTK-1 in ameliorating multiple pathological endpoints associated with kidney disease in two distinct murine models of spontaneous lupus nephritis provides a strong rationale for BTK inhibition as a promising treatment approach for lupus nephritis.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Nefrite Lúpica
/
Inibidores de Proteínas Quinases
/
Tirosina Quinase da Agamaglobulinemia
/
Rim
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Clin Immunol
Ano de publicação:
2018
Tipo de documento:
Article