| First Author | Hayward DA | Year | 2023 |
| Journal | J Exp Med | Volume | 220 |
| Issue | 3 | PubMed ID | 36662229 |
| Mgi Jnum | J:336245 | Mgi Id | MGI:7430667 |
| Doi | 10.1084/jem.20211827 | Citation | Hayward DA, et al. (2023) B cell-intrinsic requirement for WNK1 kinase in antibody responses in mice. J Exp Med 220(3) |
| abstractText | Migration and adhesion play critical roles in B cells, regulating recirculation between lymphoid organs, migration within lymphoid tissue, and interaction with CD4+ T cells. However, there is limited knowledge of how B cells integrate chemokine receptor and integrin signaling with B cell activation to generate efficient humoral responses. Here, we show that the WNK1 kinase, a regulator of migration and adhesion, is essential in B cells for T-dependent and -independent antibody responses. We demonstrate that WNK1 transduces signals from the BCR, CXCR5, and CD40, and using intravital imaging, we show that WNK1 regulates migration of naive and activated B cells, and their interactions with T cells. Unexpectedly, we show that WNK1 is required for BCR- and CD40-induced proliferation, acting through the OXSR1 and STK39 kinases, and for efficient B cell-T cell collaboration in vivo. Thus, WNK1 is critical for humoral immune responses, by regulating B cell migration, adhesion, and T cell-dependent activation. |
