What question did this study set out to answer?

To understand the role of B cell maturation antigen (BCMA) in plasma cell maturation and survival.

April 26, 2026Open Access

The Role of the B Cell Maturation Antigen in Differentiation and Survival of Plasma Cells

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Randomized trial investigates the impact of BCMA on plasma cell survival, indicating its novel role in immunity.

To understand the role of B cell maturation antigen (BCMA) in plasma cell maturation and survival.
Used Blimp1:GFP/BCMA:Tom reporter mouse model to monitor plasma cell maturation.
Cultured B cells with fibroblasts in germinal center-like conditions to study BCMA expression.
Created BCMA-deficient mouse models for testing long-lived plasma cell survival post-immunization.
BCMA expression was induced in vivo but not in vitro, highlighting the importance of the microenvironment for plasma cell maturation.
Long-lived antigen-specific plasma cells numbers were similar in BCMA-deficient and wildtype mice across multiple immunization regimens.
BCMA appears to function more as a decoy receptor regulating plasma cell population rather than a factor maintaining longevity.

Shannon Roxana Menzel (2025) studied this question.

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