Cited by 989T-cell and B-cell ImmunologyDNA Repair MechanismsGenomics and Chromatin Dynamics

Independent control of immunoglobulin switch recombination at individual switch regions evidenced through Cre-loxP-mediated gene targeting

Gu, Hua, Zou, Yong-Rui, Rajewsky, Klaus·1993·Cell

Abstract

We have employed a method based on the Cre-loxP recombination system of bacteriophage P1 to generate a mouse strain in which the JH segments and the intron enhancer in the IgH locus are deleted. By analysis of immunoglobulin isotype switch recombination in heterozygous mutant B cells activated by lipopolysaccharide plus interleukin-4, we show that, on the mutant chromosome, switch recombination at the mu gene switch region is strongly suppressed, whereas the switch region of the gamma 1 gene is efficiently rearranged. These data demonstrate an independent control of switch recombination at individual switch regions and suggest that, in the process of switch recombination, the alignment of the recombining strands occurs independently of and probably after the introduction of double-strand breaks into the switch regions involved.

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Crossref · 10.1016/0092-8674(93)90644-6

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  • In JHT mice, functional B cells fail to develop due to deletion of the Ig JH locus, while μMT mice lack B cells as a result of inactivation of the Ig heavy chain of the class M gene.

    “In JHT mice, functional B cells fail to develop due to deletion of the Ig JH locus, while μ MT mice lack B cells as a result of inactivation of the Ig heavy chain of the class M gene [112,113].”

    From Is there a role for B cells in Alzheimer's disease? (2026) · cites this paper as [112]

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Authors
Gu, H., Zou, Y.-R., & Rajewsky, K.
Affiliations
University of Cologne (DE)
Venue
Cell
Publisher
Elsevier BV
Published
1993-06
Volume
73
Issue
6
Pages
1155-1164
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2053200644
Cited by
989
References
57
Citations by year
2026: 13 · 2025: 12 · 2024: 22 · 2023: 11 · 2022: 12 · 2021: 17 · 2020: 12 · 2019: 17 · 2018: 18 · 2017: 18 · 2016: 14 · 2015: 20 · 2014: 17 · 2013: 24 · 2012: 31
FWCI
19.13
Type
journal article
Language
en
Open access
closed
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
switch regions, Cre-loxP recombination, intron enhancer, IGH locus, B cells, lipopolysaccharide, IL-4, DNA double-strand breaks
MeSH terms
Animals, Base Sequence, Female, Genes, Immunoglobulin, Genes, Switch, Male, Mice, Inbred C57BL, Mice, Mutant Strains, Molecular Sequence Data, Recombination, Genetic, Tumor Cells, Cultured, Gene Rearrangement, B-Lymphocyte, Heavy Chain, Mice

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