| First Author | Helou DG | Year | 2019 |
| Journal | J Immunol | Volume | 202 |
| Issue | 8 | Pages | 2189-2194 |
| PubMed ID | 30850475 | Mgi Jnum | J:274376 |
| Mgi Id | MGI:6287894 | Doi | 10.4049/jimmunol.1801065 |
| Citation | Helou DG, et al. (2019) Cutting Edge: Nrf2 Regulates Neutrophil Recruitment and Accumulation in Skin during Contact Hypersensitivity. J Immunol 202(8):2189-2194 |
| abstractText | Neutrophils are essential during contact hypersensitivity (CHS), a common skin allergic disease. NF-E2-related factor-2 (Nrf2) is a key regulator of redox balance and skin homeostasis playing a protective role in CHS. In this study, we investigated Nrf2 role in neutrophil recruitment during the sensitization phase of CHS. Comparing wild-type and Nrf2 knockout mice, we demonstrated that Nrf2 regulated dinitrochlorobenzene-induced xenoinflammation, notably neutrophil recruitment to sensitized skin. Nrf2 protective role was associated with high expression of antioxidant genes (ho-1, gclc, nqo1...) and decreased chemokine production (CCL2, CCL4, CCL11). Interestingly, skin sensitization induced CD36 upregulation in skin-resident macrophages. In vitro results confirmed that the transcription of cd36 gene in macrophages was dependent on Nrf2 and led to an improved capacity to phagocyte-damaged neutrophils by efferocytosis. Nrf2 emerges as a critical target in the sensitization phase of CHS regulating neutrophil recruitment and accumulation in the skin through antioxidant-dependent and -independent mechanisms. |
