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Phenotypes Associated with This Genotype
Genotype
MGI:3800656
Allelic
Composition
Bcl2l11tm1.1Ast/Bcl2l11tm1.1Ast
Faslpr/Faslpr
Genetic
Background
B6.Cg-Bcl2l11tm1.1Ast Faslpr
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bcl2l11tm1.1Ast mutation (5 available); any Bcl2l11 mutation (37 available)
Faslpr mutation (39 available); any Fas mutation (83 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• severely enlarged by 16 weeks
• increased in spleen relative to Faslpr homozygotes
• lower in spleen and lymph node compared to wild-type or single mutants
• mice show reduced amount of nae T cells compared to wild-type or Bcl2l11-deficient mice
• no difference in number of regulatory T cells is observed
• T cell subpopulations in the spleen and lymph nodes including single-positive, central memory and effector memory T cells are increased compared to single-deficient mice
• increased memory T cell numbers in spleen and lymph nodes relative to single mutant animals
• number of CD45+ cells is increased 4.6-fold vs wild-type, 3.2-fold vs Faslpr homozygotes, and 2.8-fold vs Bcl2l11-deficient mice
• plasmablast numbers in spleen are increased 30-fold relative to wild-type, 2-fold relative to Bcl2l11-deficient and 4-fold relative to Faslpr homozygous mice
• number of T1 and T2 B cells is increased relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• higher in spleen relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• higher in spleen relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• increased numbers in spleen and lymph nodes are observed
• increased effector memory T cell numbers in spleen and lymph nodes relative to single mutant animals
• enlargement of spleen is accompanied by alteration of spleen architecture, characterized by decreased red pulp amount
• enlargement of spleen is accompanied by alteration of spleen architecture, characterized by increased white pulp amount
• T1:follicular B cell ratio is disturbed; ratio is higher significantly higher than wild-type, Bcl2l11-deficient mice or Faslpr homozygotes
• increased B cell number; CD19+ B cells are increased by 4.3-fold over wild-type, 1.8-fold over Bcl2l11-null mice and by 3.6-fold over Faslpr mice
• CD19+ B cells are increased 2.2-fold over wild-type and Bcl2l11-deficient mice
• no difference from B cell number in Faslpr mice
• severely enlarged by 16 weeks
• on a normally resistant background, mice develop extreme lymphadenopathy and SLE
• total anti-IgM and total anti-IgG antibody levels are increased compared to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice; anti-nuclear, anti-cytoplasmic and anti-glomerular antibodies are increased relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• anti-nuclear antibodies are increased compared to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• anti-dsDNA IgM and IgG antibodies are increased compared to wild-type and Bcl2l11-deficient mice; anti-dsDNA IgM antibody levels are increased over levels in Faslpr homozygotes
• increased compared to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• anti-ssDNA IgM and IgG antibodies are increased compared to wild-type and Bcl2l11-deficient mice; anti-ssDNA IgM antibody levels are increased over levels in Faslpr homozygotes

hematopoietic system
• severely enlarged by 16 weeks
• increased in spleen relative to Faslpr homozygotes
• lower in spleen and lymph node compared to wild-type or single mutants
• mice show reduced amount of nae T cells compared to wild-type or Bcl2l11-deficient mice
• no difference in number of regulatory T cells is observed
• T cell subpopulations in the spleen and lymph nodes including single-positive, central memory and effector memory T cells are increased compared to single-deficient mice
• increased memory T cell numbers in spleen and lymph nodes relative to single mutant animals
• number of CD45+ cells is increased 4.6-fold vs wild-type, 3.2-fold vs Faslpr homozygotes, and 2.8-fold vs Bcl2l11-deficient mice
• plasmablast numbers in spleen are increased 30-fold relative to wild-type, 2-fold relative to Bcl2l11-deficient and 4-fold relative to Faslpr homozygous mice
• number of T1 and T2 B cells is increased relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• higher in spleen relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• higher in spleen relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• increased numbers in spleen and lymph nodes are observed
• increased effector memory T cell numbers in spleen and lymph nodes relative to single mutant animals
• enlargement of spleen is accompanied by alteration of spleen architecture, characterized by decreased red pulp amount
• enlargement of spleen is accompanied by alteration of spleen architecture, characterized by increased white pulp amount
• T1:follicular B cell ratio is disturbed; ratio is higher significantly higher than wild-type, Bcl2l11-deficient mice or Faslpr homozygotes
• increased B cell number; CD19+ B cells are increased by 4.3-fold over wild-type, 1.8-fold over Bcl2l11-null mice and by 3.6-fold over Faslpr mice

renal/urinary system
• higher numbers of apoptotic cells are detected in glomeruli compared to wild-type and single mutant mice
• glomerular proliferation is increased
• significant increase in renal B cells (CD19+) compared to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• number of macrophages surrounding glomeruli is increased compared to wild-type and Faslpr homozygotes; macrophage index is 2.5-fold higher than in Fas homozygotes
• IgG deposits mainly localized to basement glomerular membrane are increased relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice
• glomerular basement membrane thickening
• mesangial expansion, basement membrane thickening, increased interstitial infiltration, and loss of open capillary loops are characteristic hallmarks of renal damage observed
• kidney damage pathological scores are increased over wild-type, Faslpr homozygotes, and Bcl2l11-deficient glomeruli
• glomerular proliferation is increased
• loss of open capillary loops
• mesangial expansion
• glomerular size is increased relative to wild-type, Faslpr homozygotes, and Bcl2l11-deficient mice

cellular
• higher numbers of apoptotic cells are detected in glomeruli compared to wild-type and single mutant mice
• glomerular proliferation is increased

cardiovascular system
• loss of open capillary loops

growth/size/body
• severely enlarged by 16 weeks


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
01/28/2026
MGI 6.24
The Jackson Laboratory