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ElTanbouly MA, Ramos V, MacLean AJ, Chen ST, Loewe M, Steinbach S, Ben Tanfous T, Johnson B, Cipolla M, Gazumyan A, Oliveira TY, Nussenzweig MC. Role of affinity in plasma cell development in the germinal center light zone. J Exp Med 2024; 221:e20231838. [PMID: 37938344 PMCID: PMC10631489 DOI: 10.1084/jem.20231838] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/09/2023] Open
Abstract
Protective immune responses to many pathogens depend on the development of high-affinity antibody-producing plasma cells (PC) in germinal centers (GCs). Transgenic models suggest that there is a stringent affinity-based barrier to PC development. Whether a similar high-affinity barrier regulates PC development under physiologic circumstances and the nature of the PC fate decision has not been defined precisely. Here, we use a fate-mapping approach to examine the relationship between GC B cells selected to undergo additional rounds of affinity maturation, GC pre-PC, and PC. The data show that initial PC selection overlaps with GC B cell selection, but that the PC compartment accumulates a less diverse and higher affinity collection of antibodies over time. Thus, whereas the GC continues to diversify over time, affinity-based pre-PC selection sieves the GC to enable the accumulation of a more restricted group of high-affinity antibody-secreting PC.
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Affiliation(s)
| | - Victor Ramos
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Andrew J. MacLean
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Spencer T. Chen
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Maximilian Loewe
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Sandra Steinbach
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Tarek Ben Tanfous
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Brianna Johnson
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Melissa Cipolla
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Anna Gazumyan
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
- Howard Hughes Medical Institute, The Rockefeller University, New York, NY, USA
| | - Thiago Y. Oliveira
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
| | - Michel C. Nussenzweig
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, USA
- Howard Hughes Medical Institute, The Rockefeller University, New York, NY, USA
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