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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rr94tm3.2Litt
targeted mutation 3.2, Dan R Littman
MGI:4452053
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Rr94tm3.2Litt/Rr94tm3.2Litt involves: 129P2/OlaHsd * FVB/N MGI:4452090
cx2
Rr94tm3.2Litt/Rr94tm3.2Litt
H2-Ab1b-tm1Gru/H2-Ab1b-tm1Gru
involves: 129P2/OlaHsd * 129S2/SvPas * FVB/N MGI:4452092
cx3
B2mtm1Jae/B2mtm1Jae
Rr94tm3.2Litt/Rr94tm3.2Litt
involves: 129P2/OlaHsd * 129S2/SvPas * FVB/N MGI:4452093
cx4
Rr94tm3.2Litt/Rr94+
Rr112tm4.1Litt/Rr112+
involves: 129P2/OlaHsd * 129S4/SvJaeSor * FVB/N MGI:4452096


Genotype
MGI:4452090
hm1
Allelic
Composition
Rr94tm3.2Litt/Rr94tm3.2Litt
Genetic
Background
involves: 129P2/OlaHsd * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
N
• the total cell numbers in the thymus and peripheral lymphoid organs are normal
• the proportion of CD4- T cells increased following TCR activation unlike in wild-type mice
• CD4 expression is absent in preseletion double positive thymocytes unlike wild-type mice
• however, CD4 expression is present in post-positive selection thymocytes and maintained in CD4 single positive mature thymocytes and the frequency of positively selected TCRbetahiCD24hi69+ or TCRbetahiCD24lo69- thymocytes, or of TCRbeta+ splenocytes is normal
• the double positive population in the thymus is lost unlike in wild-type mice
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• CD4 expression level in mature CD4+ cells is one third of expression in CD4+ T cells from wild-type mice
• CD4lo T cells lose CD4 expression within 2 divisions following TCR activation unlike wild-type cells
• the percentage of CD4 single positive cell in the thymus is decreased compared to in wild-type mice
• the number of TCRbeta+ CD4+ T cells in the spleen is decreased compared to in wild-type mice

hematopoietic system
• the proportion of CD4- T cells increased following TCR activation unlike in wild-type mice
• CD4 expression is absent in preseletion double positive thymocytes unlike wild-type mice
• however, CD4 expression is present in post-positive selection thymocytes and maintained in CD4 single positive mature thymocytes and the frequency of positively selected TCRbetahiCD24hi69+ or TCRbetahiCD24lo69- thymocytes, or of TCRbeta+ splenocytes is normal
• the double positive population in the thymus is lost unlike in wild-type mice
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• CD4 expression level in mature CD4+ cells is one third of expression in CD4+ T cells from wild-type mice
• CD4lo T cells lose CD4 expression within 2 divisions following TCR activation unlike wild-type cells
• the percentage of CD4 single positive cell in the thymus is decreased compared to in wild-type mice
• the number of TCRbeta+ CD4+ T cells in the spleen is decreased compared to in wild-type mice




Genotype
MGI:4452092
cx2
Allelic
Composition
Rr94tm3.2Litt/Rr94tm3.2Litt
H2-Ab1b-tm1Gru/H2-Ab1b-tm1Gru
Genetic
Background
involves: 129P2/OlaHsd * 129S2/SvPas * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
H2-Ab1b-tm1Gru mutation (11 available); any H2-Ab1 mutation (81 available)
Rr94tm3.2Litt mutation (0 available); any Rr94 mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
N
• the expression of CD4 in post-selection thymocytes is normal
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• mature CD4 single positive and peripheral CD4lo T cell populations are largely lost unlike in wild-type mice

hematopoietic system
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• mature CD4 single positive and peripheral CD4lo T cell populations are largely lost unlike in wild-type mice




Genotype
MGI:4452093
cx3
Allelic
Composition
B2mtm1Jae/B2mtm1Jae
Rr94tm3.2Litt/Rr94tm3.2Litt
Genetic
Background
involves: 129P2/OlaHsd * 129S2/SvPas * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
B2mtm1Jae mutation (8 available); any B2m mutation (122 available)
Rr94tm3.2Litt mutation (0 available); any Rr94 mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• thymocytes exhibit lymphopenia-induced homeostatic proliferation in the periphery unlike in wild-type mice
• the frequency of TCRbetahi thymocyte is decreased 10-fold compared to in wild-type mice
• mice exhibit peripheral TCRbeta<+> T cells that do not express CD4 or CD8 unlike in wild-type mice
• mice exhibit a reduction in mature thymocyte output compared with wild-type mice
• however, the expression of CD4 in post-selection thymocytes is normal
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice

hematopoietic system
• thymocytes exhibit lymphopenia-induced homeostatic proliferation in the periphery unlike in wild-type mice
• the frequency of TCRbetahi thymocyte is decreased 10-fold compared to in wild-type mice
• mice exhibit peripheral TCRbeta<+> T cells that do not express CD4 or CD8 unlike in wild-type mice
• mice exhibit a reduction in mature thymocyte output compared with wild-type mice
• however, the expression of CD4 in post-selection thymocytes is normal
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice

cellular
• thymocytes exhibit lymphopenia-induced homeostatic proliferation in the periphery unlike in wild-type mice




Genotype
MGI:4452096
cx4
Allelic
Composition
Rr94tm3.2Litt/Rr94+
Rr112tm4.1Litt/Rr112+
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJaeSor * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice exhibit the same phenotype as Cd4tm3.2Litt homozygotes
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• mice exhibit a decreased in CD4 expression in lamina propria lin-c-kit+CD127+ cells compared to in wild-type mice

hematopoietic system
• mice exhibit the same phenotype as Cd4tm3.2Litt homozygotes
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• mice exhibit a decreased in CD4 expression in lamina propria lin-c-kit+CD127+ cells compared to in wild-type mice





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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory