Single cell clonal analysis identifies an AID ‐dependent pathway of plasma cell differentiation

Abstract: Germinal centers (GC) are microstructures where B cells that have been activated by antigen can improve the affinity of their B cell receptors and differentiate into memory B cells (MBCs) or antibody‐secreting plasma cells. Here, we have addressed the role of activation‐induced deaminase (AID), which initiates somatic hypermutation and class switch recombination, in the terminal differentiation of GC B cells. By combining single cell transcriptome and immunoglobulin clonal analysis in a mouse model that traces AID‐experienced cells, we have identified a novel subset of late‐prePB cells (L‐prePB), which shares the strongest clonal relationships with plasmablasts (PBs). Mice lacking AID have various alterations in the size and expression profiles of transcriptional clusters. We find that AID deficiency leads to a reduced proportion of L‐prePB cells and severely impairs transitions between the L‐prePB and the PB subsets. Thus, AID shapes the differentiation fate of GC B cells by enabling PB generation from a prePB state.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Single cell clonal analysis identifies an AID ‐dependent pathway of plasma cell differentiation ; day:07 ; month:10 ; year:2022 ; extent:23
EMBO reports / European Molecular Biology Organization ; (07.10.2022) (gesamt 23)

Creator
Gómez‐Escolar, Carmen
Serrano‐Navarro, Alvaro
Benguria, Alberto
Dopazo, Ana
Sánchez‐Cabo, Fátima
Ramiro, Almudena R.

DOI
10.15252/embr.202255000
URN
urn:nbn:de:101:1-2022100815010972053103
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:27 AM CEST

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Associated

  • Gómez‐Escolar, Carmen
  • Serrano‐Navarro, Alvaro
  • Benguria, Alberto
  • Dopazo, Ana
  • Sánchez‐Cabo, Fátima
  • Ramiro, Almudena R.

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