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Pbbcp1C57BL/6J
QTL Variant Detail
Summary
QTL variant: Pbbcp1C57BL/6J
Name: peripheral blood B cell percentage 1; C57BL/6J
MGI ID: MGI:2447019
QTL: Pbbcp1  Location: Chr1:116507660-116507845 bp  Genetic Position: Chr1, cM position of peak correlated region/allele: 51.5 cM
QTL Note: genome coordinates based on the boundaries of the QTL region
Variant
origin
Strain of Specimen:  C57BL/6J
Variant
description
Allele Type:    QTL
Mutation:    Undefined
    This allele confers increased peripheral blood B220% proportions compared to DBA/2J. (J:74270)
Phenotypes
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View phenotypes and curated references for all genotypes (concatenated display).
Notes

Mapping and Phenotype information for this QTL, its variants and associated markers

J:74270

35 C57BL/6J x DBA/2J (BXD) recombinant inbred (RI) strains were used to map loci associated with peripheral blood lymphocyte proportions. Parental strain C57BL/6J exhibits a higher concentration of circulating white blood cells compared to DBA/2J. Two loci linked to peripheral blood B lymphocyte proportion, Pbbcp1 and Pbccp2, mapped to mouse Chromosome 1. Pbbcp1 spans 62 cM - 64 cM and gives strongest linkage at 63.1 cM with LOD=4.1 at D1Mit188. Pbbcp2 gives strongest linkage at 48.4 cM with LOD=3.7 at D1Ncvs45. A locus linked to peripheral blood CD8 T lymphocyte proportion, Pbctlp1, mapped to mouse Chromosome 19 from 9 cM - 24 cM with LOD=3.8 at D19Mit28 (12 cM). A (C57BL/6J x SJL)F2 intercross population was used to confirm the QTLs mapped in the BXD RI strains. Parental C57BL/6J exhibits a significantly higher concentration of circulating white blood cells compared to SJL. Pbbcp1 was detected in the F2 cross, but not Pbbcp2 or Pbctlp1. Authors speculate C57BL/6J and SJL may not be polymorphic at Pbbcp2 and Pbctlp1. In the F2 cross, Pbbcp1 spanned 59.8 cMp - 70 cM and showed strongest linkage at Gli2 (63 cM) with LOD=5.6. Possible candidate genes for Pbbcp1 are Gli2, En1, and Bcl2.Three markers adjacent to the Pbbcp1 locus, D1Mit387 (62 cM), Gli2 (63 cM), and D1Mit419 (63.1 cM) all showed an association with peripheral blood ( PB) lymphocytes that express B220,

References
Original:  J:74270 Chen J, et al., Quantitative trait loci regulating relative lymphocyte proportions in mouse peripheral blood. Blood. 2002 Jan 15;99(2):561-6
All:  1 reference(s)

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
03/19/2024
MGI 6.23
The Jackson Laboratory