Summarized by Masters of Longevity from Nature Aging.
Activated, senescent-like naive B cells are the focus of a research article examining immune changes that precede clinical rheumatoid arthritis; it previews molecular and functional analyses exploring their potential role in disease progression.
Key Takeaways
- Anticitrullinated-protein-antibody-positive individuals who progressed to RA showed marked expansion of CXCR5+ CD69+ activated naive B cells.
- These activated naive B cells exhibited inflammatory and senescent-like transcriptional programs and dominated the BCR repertoire with unmutated polyreactive IgM.
- Citrullinated-antigen stimulation drove these B cells to present antigen and activate T cells in an HLA-dependent manner in vitro.
