Assuntos
Anafilaxia , Camundongos , Animais , Anafilaxia/etiologia , Neutrófilos , Receptores de IgG , Imunoglobulina G , Modelos Animais de DoençasAssuntos
Basófilos , Receptores de IgE , Degranulação Celular , Humanos , Imunoglobulina E , Contagem de Leucócitos , MastócitosRESUMO
Taniguchi et al (Research Articles, 17 July 2020, p. 269) claim that the cytokine interleukin-33 induces accumulation of tumor-associated macrophages expressing the immunoglobulin E receptor FcεRI. Although these findings hold great therapeutic promise, we provide evidence that the anti-FcεRI antibody used in this study is not specific for FcεRI on macrophages, which raises concerns about the validity of some of the conclusions.
Assuntos
Interleucina-33 , Neoplasias , Humanos , Interleucina-33/genética , Neoplasias/genética , Células-Tronco Neoplásicas , Receptores de IgE , Fator de Crescimento Transformador betaRESUMO
IL-6 excess is central to the pathogenesis of multiple inflammatory conditions and is targeted in clinical practice by immunotherapy that blocks the IL-6 receptor encoded by IL6R We describe two patients with homozygous mutations in IL6R who presented with recurrent infections, abnormal acute-phase responses, elevated IgE, eczema, and eosinophilia. This study identifies a novel primary immunodeficiency, clarifying the contribution of IL-6 to the phenotype of patients with mutations in IL6ST, STAT3, and ZNF341, genes encoding different components of the IL-6 signaling pathway, and alerts us to the potential toxicity of drugs targeting the IL-6R.
