An IL-1β-driven neutrophil–stromal cell axis fosters a BAFF-rich protumor microenvironment in individuals with multiple myeloma

Nature Immunology, Published online: 10 April 2024; doi:10.1038/s41590-024-01808-x

Cupedo and colleagues show that neutrophils promote a tumor-supportive microenvironment via a self-amplifying interaction between neutrophils and bone marrow stromal cells. This scenario creates a promyeloma niche that is difficult to treat despite targeted therapies directed at the myeloma cells.

Immune dysregulation in long COVID

Nature Immunology, Published online: 08 April 2024; doi:10.1038/s41590-024-01795-z

Profiling of plasma proteins in individuals with COVID-19 shows that complement activation and myeloid inflammation are major pathways in the pathogenesis of long COVID and identifies distinct profiles of immune dysregulation in individuals with long COVID, highlighting the heterogeneous and diverse nature of this disease.