Evidence map›Paper›PMID 8006591›Full record

ArticleThe Journal of experimental medicine1994

Analysis of somatic mutation in five B cell subsets of human tonsil.

V Pascual, Y J Liu, A Magalski, O de Bouteiller, J Banchereau, J D Capra

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of experimental medicine, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 204 papers.

0numbers the graph read from it
0cells of the map it votes in
204citing papers in PubMed
16.2field-weighted citation impact, top 1% 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

204 citing papers in PubMed, 656 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. FcRL1, a New B-Cell-Activating Co-Receptor.International journal of molecular sciences · 2025
    Review
  5. A guide to adaptive immune memory.Nature reviews. Immunology · 2024
    Review
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  7. Article
  8. Article
  9. Article
  10. Article
  11. Comprehensive phenotyping of human peripheral blood B lymphocytes in healthy conditions.Cytometry. Part A : the journal of the International Society for Analytical Cytology · 2022
    Review
  12. Article
  13. Role of Globotriaosylceramide in Physiology and Pathology.Frontiers in molecular biosciences · 2022
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review

144 more citing papers are in PubMed but not listed here.

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

6 authors at 1 institution in 1 country.

V PascualDepartment of Microbilogy, University of Texas Southwestern Medical Center at Dallas.
Y J Liu
A Magalski
O de Bouteiller
J Banchereau
J D Capra
The University of Texas Southwestern Medical Center · US

Funding

TISSUE-SPECIFIC EXPRESSION OF THE KALLIKREIN GENE FAMILYP01GM031689 · NIGMS · UNIVERSITY OF TEXAS SW MED CTR/DALLAS · PI MCDONALD, RAYMOND J · 1985 to 1998
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NIAID NIH HHS AI-121227NIGMS NIH HHS GM-31689
6 · The paper itself

Abstract

Using a series of phenotypic markers that include immunoglobulin (Ig)D, IgM, IgG, CD23, CD44, Bcl-2, CD38, CD10, CD77, and Ki67, human tonsillar B cells were separated into five fractions representing different stages of B cell differentiation that included sIgD+ (Bm1 and Bm2), germinal center (Bm3 and Bm4), and memory (Bm5) B cells. To establish whether the initiation of somatic mutation correlated with this phenotypic characterization, we performed polymerase chain reaction and subsequent sequence analysis of the Ig heavy chain variable region genes from each of the B cell subsets. We studied the genes from the smallest VH families (VH4, VH5, and VH6) in order to facilitate the mutational analysis. In agreement with previous reports, we found that the somatic mutation machinery is activated only after B cells reach the germinal center and become centroblasts (Bm3). Whereas 47 independently rearranged IgM transcripts from the Bm1 and Bm2 subsets were nearly germline encoded, 57 Bm3-, and Bm4-, and Bm5-derived IgM transcripts had accumulated an average of 5.7 point mutations within the VH gene segment. gamma transcripts corresponding to the same VH gene families were isolated from subsets Bm3, Bm4, and Bm5, and had accumulated an average of 9.5 somatic mutations. We conclude that the molecular events underlying the process of somatic mutation takes place during the transition from IgD+, CD23+ B cells (Bm2) to the IgD-, CD23-, germinal center centroblast (Bm3). Furthermore, the analysis of Ig variable region transcripts from the different subpopulations confirms that the pathway of B cell differentiation from virgin B cell throughout the germinal center up to the memory compartment can be traced with phenotypic markers. The availability of these subpopulations should permit the identification of the functional molecules relevant to each stage of B cell differentiation.

Indexed as

Genes, ImmunoglobulinMutationAntigens, CDBase SequenceB-Lymphocyte SubsetsHumansImmunoglobulin DImmunoglobulin GImmunoglobulin Heavy ChainsImmunoglobulin MImmunoglobulin Variable RegionMolecular Sequence DataPalatine TonsilPolymerase Chain ReactionAntigens, CDImmunoglobulin DImmunoglobulin GImmunoglobulin Heavy ChainsImmunoglobulin MImmunoglobulin Variable Region

Identifiers

PMID8006591
PMCPMC2191579
OpenAlexW2161243339

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Registered trials

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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.