Evidence map›Paper›PMID 24021876›Full record

ArticleInternational immunology2013

Both mutated and unmutated memory B cells accumulate mutations in the course of the secondary response and develop a new antibody repertoire optimally adapted to the secondary stimulus.

Tomohiro Kaji, Koji Furukawa, Akiko Ishige, Itsumi Toyokura, Masaki Nomura, Mariko Okada, Yoshimasa Takahashi, Michiko Shimoda, Toshitada Takemori

Open access · bronzeAbstract read
In one paragraph

Article in International immunology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.5field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 25 citations in OpenAlex.

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  12. Life of T follicular helper cells.Molecules and cells · 2015
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

Tomohiro KajiLaboratory for Immunological Memory, RIKEN Research Center for Allergy and Immunology, Yokohama, Kanagawa, 230-0045, Japan.
Koji Furukawa
Akiko Ishige
Itsumi Toyokura
Masaki Nomura
Mariko Okada
Yoshimasa Takahashi
Michiko Shimoda
Toshitada Takemori
RIKEN Center for Integrative Medical Sciences · JPAugusta University · USNational Institute of Advanced Industrial Science and Technology · JPNational Institute of Infectious Diseases · JP

Funding

Long-lived plasma cell differentiationR21AI064752 · NIAID · AUGUSTA UNIVERSITY · PI SHIMODA, MICHIKO · 2007 to 2008
$401k
NIAID NIH HHS AI064752
6 · The paper itself

Abstract

High-affinity memory B cells are preferentially selected during secondary responses and rapidly differentiate into antibody-producing cells. However, it remains unknown whether only high-affinity, mutated memory B cells simply expand to dominate the secondary response or if in fact memory B cells with a diverse VH repertoire, including those with no mutations, accumulate somatic mutations to create a new repertoire through the process of affinity maturation. In this report, we took a new approach to address this question by analyzing the VH gene repertoire of IgG1(+) memory B cells before and after antigen re-exposure in a host unable to generate IgG(+) B cells. We show here that both mutated and unmutated IgG1(+) memory B cells respond to secondary challenge and expand while accumulating somatic mutations in their VH genes in a stepwise manner. Both types of memory cells subsequently established a VH gene repertoire dominated by two major clonotypes, which are distinct from the original repertoire before antigen re-exposure. In addition, heavily mutated memory B cells were excluded from the secondary repertoire. Thus, both mutated and unmutated IgG1(+) memory cells equally contribute to establish a new antibody repertoire through a dynamic process of mutation and selection, becoming optimally adapted to the recall challenge.

Indexed as

Immunologic MemoryMutationAdoptive TransferAICDA (Activation-Induced Cytidine Deaminase)AnimalsAntibody FormationAntibody-Producing CellsAntigensB-LymphocytesCell DifferentiationCytidine DeaminaseImmunoglobulin GImmunoglobulin Heavy ChainsImmunoglobulin Variable RegionMiceMice, KnockoutAICDA (Activation-Induced Cytidine Deaminase)AntigensCytidine DeaminaseImmunoglobulin GImmunoglobulin Heavy ChainsImmunoglobulin Variable RegionAntibody repertoirememory B cellssecondary responsesomatic hypermutation

Identifiers

PMID24021876
PMCPMC3839062
OpenAlexW2099869911

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.