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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Ightm4Cgn
targeted mutation 4, University of Cologne
MGI:2388394
Summary 11 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Ightm4Cgn/Igh+ involves: 129P2/OlaHsd MGI:3693006
ht2
Ightm1Kplm/Ightm4Cgn involves: 129P2/OlaHsd MGI:3693008
cn3
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
involves: 129P2/OlaHsd MGI:4430560
cn4
Foxo1tm1Rdp/Foxo1tm1.1Rdp
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
involves: 129P2/OlaHsd * 129S1/Sv MGI:4430557
cn5
Foxo1tm1.1Rdp/Foxo1+
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
involves: 129P2/OlaHsd * 129S1/Sv MGI:4430558
cn6
Gt(ROSA)26Sortm9(Rac1*,EGFP)Rsky/Gt(ROSA)26Sortm9(Rac1*,EGFP)Rsky
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
involves: 129P2/OlaHsd * C57BL/6 MGI:4430563
cn7
Gt(ROSA)26Sortm4(Ikbkb)Rsky/Gt(ROSA)26Sortm4(Ikbkb)Rsky
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
involves: 129P2/OlaHsd * C57BL/6 MGI:4430555
cn8
Gt(ROSA)26Sortm8(Map2k1*,EGFP)Rsky/Gt(ROSA)26Sortm8(Map2k1*,EGFP)Rsky
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
involves: 129P2/OlaHsd * C57BL/6 MGI:4430561
cn9
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Not Specified MGI:3576498
cx10
Blnktm1Kplm/Blnktm1Kplm
Ightm4Cgn/Igh+
Igktm1Rsky/Igk+
involves: 129P2/OlaHsd MGI:3844072
cx11
Ightm1Kplm/Ightm4Cgn
Tg(Igk-V4CH27)1-2Shc/0
involves: 129P2/OlaHsd * C57BL/6 * SJL MGI:3693009


Genotype
MGI:3693006
ht1
Allelic
Composition
Ightm4Cgn/Igh+
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• in 2-4 month old mice, majority of B cells are B-2 cells, expressing high levels of IgD and B220; these cells do not express CD5 which is found on T and B-1 cells

immune system
• in 2-4 month old mice, majority of B cells are B-2 cells, expressing high levels of IgD and B220; these cells do not express CD5 which is found on T and B-1 cells




Genotype
MGI:3693008
ht2
Allelic
Composition
Ightm1Kplm/Ightm4Cgn
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ightm1Kplm mutation (0 available); any Igh mutation (43 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• in 2-4 month old mice, B cells in these mice express high levels of B220 and IgD, and the majority are CD23-positive, while CD5 is not expressed, indicating that these cells are B-2 cells
• splenic B cell number is similar to that found in wild-type and single Ightm3Cgn or Ightm4Cgn mutants, but peritoneal B cell number is increased, similar to Ightm1Kplm mutants
• B cells expressing only Ightm1Kplm (indicating loss of the Ightm4Cgn allele) are phenotypically B-1 cells

immune system
• in 2-4 month old mice, B cells in these mice express high levels of B220 and IgD, and the majority are CD23-positive, while CD5 is not expressed, indicating that these cells are B-2 cells
• splenic B cell number is similar to that found in wild-type and single Ightm3Cgn or Ightm4Cgn mutants, but peritoneal B cell number is increased, similar to Ightm1Kplm mutants
• B cells expressing only Ightm1Kplm (indicating loss of the Ightm4Cgn allele) are phenotypically B-1 cells




Genotype
MGI:4430560
cn3
Allelic
Composition
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igh-Jtm1Cgn mutation (3 available); any Igh-J mutation (13 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice lack mature BCR positive B cells

hematopoietic system
• mice lack mature BCR positive B cells




Genotype
MGI:4430557
cn4
Allelic
Composition
Foxo1tm1Rdp/Foxo1tm1.1Rdp
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Genetic
Background
involves: 129P2/OlaHsd * 129S1/Sv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Foxo1tm1.1Rdp mutation (0 available); any Foxo1 mutation (31 available)
Foxo1tm1Rdp mutation (2 available); any Foxo1 mutation (31 available)
Igh-Jtm1Cgn mutation (3 available); any Igh-J mutation (13 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice exhibit an accumulation of IgM negative B cells compared to in Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice
• mice exhibit an efficient rescue of BCR negative B cells compared with Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice
• however, follicle B cells are rescued compared to in Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice

hematopoietic system
• mice exhibit an accumulation of IgM negative B cells compared to in Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice
• mice exhibit an efficient rescue of BCR negative B cells compared with Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice
• however, follicle B cells are rescued compared to in Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice




Genotype
MGI:4430558
cn5
Allelic
Composition
Foxo1tm1.1Rdp/Foxo1+
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Genetic
Background
involves: 129P2/OlaHsd * 129S1/Sv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Foxo1tm1.1Rdp mutation (0 available); any Foxo1 mutation (31 available)
Igh-Jtm1Cgn mutation (3 available); any Igh-J mutation (13 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice exhibit a limited rescue of IgM negative B cells compared to in Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice

hematopoietic system
• mice exhibit a limited rescue of IgM negative B cells compared to in Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice




Genotype
MGI:4430563
cn6
Allelic
Composition
Gt(ROSA)26Sortm9(Rac1*,EGFP)Rsky/Gt(ROSA)26Sortm9(Rac1*,EGFP)Rsky
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm9(Rac1*,EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
Igh-Jtm1Cgn mutation (3 available); any Igh-J mutation (13 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice lack mature BCR positive B cells

hematopoietic system
• mice lack mature BCR positive B cells




Genotype
MGI:4430555
cn7
Allelic
Composition
Gt(ROSA)26Sortm4(Ikbkb)Rsky/Gt(ROSA)26Sortm4(Ikbkb)Rsky
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(Ikbkb)Rsky mutation (2 available); any Gt(ROSA)26Sor mutation (944 available)
Igh-Jtm1Cgn mutation (3 available); any Igh-J mutation (13 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice exhibit a very limited rescue of BCR negative B cells in several lymphoid organs compared with Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice

hematopoietic system
• mice exhibit a very limited rescue of BCR negative B cells in several lymphoid organs compared with Igh-Jtm1Cgn/Ightm4Cgn Tg(Cr2-cre)3Cgn mice




Genotype
MGI:4430561
cn8
Allelic
Composition
Gt(ROSA)26Sortm8(Map2k1*,EGFP)Rsky/Gt(ROSA)26Sortm8(Map2k1*,EGFP)Rsky
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm8(Map2k1*,EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
Igh-Jtm1Cgn mutation (3 available); any Igh-J mutation (13 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice lack mature BCR positive B cells

hematopoietic system
• mice lack mature BCR positive B cells




Genotype
MGI:3576498
cn9
Allelic
Composition
Igh-Jtm1Cgn/Ightm4Cgn
Tg(Cr2-cre)3Cgn/0
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igh-Jtm1Cgn mutation (3 available); any Igh-J mutation (13 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• B cell numbers are reduced 50% in the bone marrow, by about 2/3 in follicular and marginal zones of the spleen, and strongly reduced in the inguinal lymph nodes

immune system
• B cell numbers are reduced 50% in the bone marrow, by about 2/3 in follicular and marginal zones of the spleen, and strongly reduced in the inguinal lymph nodes




Genotype
MGI:3844072
cx10
Allelic
Composition
Blnktm1Kplm/Blnktm1Kplm
Ightm4Cgn/Igh+
Igktm1Rsky/Igk+
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Blnktm1Kplm mutation (0 available); any Blnk mutation (76 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Igktm1Rsky mutation (1 available); any Igk mutation (25 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• innocuous transgenic BCR on Blnk null B cells leads to enhanced development of these B cells compared to Blnk homozygotes
• two populations are detected in the bone marrow consisting of IgMlo and IgMhi groups
• both populations appear to be immature B cells as they have low surface level expression of MHC-II and CD43, and high levels of CD24
• based on intensity of these surface markers, the IgMlo population is the less mature of the two
• in vitro maturation of bone marrow cells demonstrate delayed development of these IgM+ cells
• B cells in the periphery are primarily T1 stage B cells that have a short half-life
• B cells in the periphery are primarily T1 stage B cells
• B cell numbers are decreased 2- to 3- fold in the spleen
• the B cells present are primarily T1 stage B cells
• pre-B cell numbers are 2-3 fold higher in the bone marrow than in transgenic controls

hematopoietic system
• innocuous transgenic BCR on Blnk null B cells leads to enhanced development of these B cells compared to Blnk homozygotes
• two populations are detected in the bone marrow consisting of IgMlo and IgMhi groups
• both populations appear to be immature B cells as they have low surface level expression of MHC-II and CD43, and high levels of CD24
• based on intensity of these surface markers, the IgMlo population is the less mature of the two
• in vitro maturation of bone marrow cells demonstrate delayed development of these IgM+ cells
• B cells in the periphery are primarily T1 stage B cells that have a short half-life
• B cells in the periphery are primarily T1 stage B cells
• B cell numbers are decreased 2- to 3- fold in the spleen
• the B cells present are primarily T1 stage B cells
• pre-B cell numbers are 2-3 fold higher in the bone marrow than in transgenic controls




Genotype
MGI:3693009
cx11
Allelic
Composition
Ightm1Kplm/Ightm4Cgn
Tg(Igk-V4CH27)1-2Shc/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ightm1Kplm mutation (0 available); any Igh mutation (43 available)
Ightm4Cgn mutation (0 available); any Igh mutation (43 available)
Tg(Igk-V4CH27)1-2Shc mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• splenic B cell number is increased 3- to 5-fold compared to Tg(Igk-V4CH27)1-2Shc or Ightm4Cgn, Tg(Igk-V4CH27)1-2Shc mutants

immune system
• splenic B cell number is increased 3- to 5-fold compared to Tg(Igk-V4CH27)1-2Shc or Ightm4Cgn, Tg(Igk-V4CH27)1-2Shc mutants





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last database update
05/07/2024
MGI 6.23
The Jackson Laboratory