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Karolinska Institutet Researchers Map Developmental Pathways and Shifting Functions of Atypical B Cells in Malaria
Phys.org Science•Published: Oct 12, 2026 07:30 PM IST
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Researchers at the Karolinska Institutet have successfully mapped how atypical B cells develop and change their functions over time, offering new clarity on a long-debated immune system component. By analyzing blood samples from malaria patients and healthy donors, the team tracked individual B cell progression across a continuous developmental spectrum rather than as a uniform cell type.
- Developmental Continuum: Atypical B cells exist along a continuum with early, intermediate, and late stages, tracked using cell-surface markers CD11c, CD24, and CD27.
- Shifting Immune Functions: Early-stage cells produce antibodies and signaling cytokines, while late-stage cells specialize in capturing and presenting foreign substances.
- Multiple Origins: The study revealed that these cells arise from different memory B cells following parallel pathways before converging on a common final stage.
The Context & Background
These findings reconcile conflicting prior research regarding the exact roles of atypical B cells in chronic infections and inflammatory conditions. The discovery establishes fundamental principles about human immunology that extend beyond malaria to other infections and diseases.
Why it matters:Understanding the dynamic lifecycle of atypical B cells resolves years of conflicting scientific descriptions and deepens our fundamental knowledge of human immunology. This breakthrough could guide the development of more effective vaccines and targeted treatments for malaria, chronic infections, and various inflammatory diseases.
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