About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
plt
paucity of lymph node T-cells
MGI:1857881
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
plt/plt B6.DDD-plt MGI:4430603
hm2
plt/plt C.DDD-plt MGI:3762343
hm3
plt/plt either: B6.DDD-plt or C.DDD-plt MGI:4437582
hm4
plt/plt involves: DDD/1 MGI:2660691


Genotype
MGI:4430603
hm1
Allelic
Composition
plt/plt
Genetic
Background
B6.DDD-plt
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
plt mutation (4 available); any plt mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
N
• no single positive T cell abnormalities other than the migration defect from cortex to medulla of the thymus
• single positive T cells fail to localize to the medulla of the thymus in newborns
• single positive T cells are retained in the cortex of the thymus
• single positive thymocytes are retained by the cortex rather than migrating to the medulla
• reduced in size in the adult thymus
• medullary volume is about 50% that found in controls

hematopoietic system
• single positive T cells fail to localize to the medulla of the thymus in newborns
• single positive T cells are retained in the cortex of the thymus
• single positive thymocytes are retained by the cortex rather than migrating to the medulla
• reduced in size in the adult thymus
• medullary volume is about 50% that found in controls

cellular
• single positive T cells fail to localize to the medulla of the thymus in newborns
• single positive T cells are retained in the cortex of the thymus

endocrine/exocrine glands
• single positive thymocytes are retained by the cortex rather than migrating to the medulla
• reduced in size in the adult thymus
• medullary volume is about 50% that found in controls




Genotype
MGI:3762343
hm2
Allelic
Composition
plt/plt
Genetic
Background
C.DDD-plt
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
plt mutation (4 available); any plt mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• the amount of CD4+ or CD8+ T cells are decreased in lymph nodes compared to in wild-type mice
• however, remaining single positive cells undergo normal activation and proliferation alloresponses
• mice exhibit impaired T cell activation following receipt of islet allografts compared to wild-type mice
• however, T cell alloresponses are normal
• islet allografts function for over 120 days compared to in wild-type mice in which rejection occurs at 14 days
• unlike in wild-type mice, cardiac allograft survival time is doubled after the spleen is removed
• however, cardiac allografts are rejected at the same tempo as in wild-type mice

hematopoietic system
• the amount of CD4+ or CD8+ T cells are decreased in lymph nodes compared to in wild-type mice
• however, remaining single positive cells undergo normal activation and proliferation alloresponses
• mice exhibit impaired T cell activation following receipt of islet allografts compared to wild-type mice
• however, T cell alloresponses are normal




Genotype
MGI:4437582
hm3
Allelic
Composition
plt/plt
Genetic
Background
either: B6.DDD-plt or C.DDD-plt
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
plt mutation (4 available); any plt mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
• mice exhibit sialadenitis unlike wild-type mice
• parotid glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• submandibular glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• as early as 5 weeks of age, mice exhibit lesions in exocrine glands unlike wild-type mice
• mice exhibit parotid gland tissue damage associated with inflammation unlike wild-type mice
• mice exhibit submandibular gland tissue damage associated with inflammation unlike wild-type mice
• lacrimal glands exhibit periductal lymphocyte infiltration causing destruction of acinar cells unlike in wild-type mice
• lacrimal glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• mice exhibit dacryoadenitis unlike wild-type mice

immune system
• FTY720-treated mice exhibit an accumulation of mature thymocytes in the cortex rather than medulla of the thymus as in similarly treated wild-type mice
• mice exhibit autoimmune exocrinopathy unlike wild-type mice
• mice exhibit sialadenitis unlike wild-type mice
• parotid glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• submandibular glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• lacrimal glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• mice exhibit dacryoadenitis unlike wild-type mice

homeostasis/metabolism
• FTY720-treated mice exhibit an accumulation of mature thymocytes in the cortex rather than medulla of the thymus as in similarly treated wild-type mice

digestive/alimentary system
• mice exhibit parotid gland tissue damage associated with inflammation unlike wild-type mice
• mice exhibit submandibular gland tissue damage associated with inflammation unlike wild-type mice
• mice exhibit sialadenitis unlike wild-type mice
• parotid glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• submandibular glands exhibit periductal lymphocyte infiltration unlike in wild-type mice

vision/eye
• lacrimal glands exhibit periductal lymphocyte infiltration causing destruction of acinar cells unlike in wild-type mice
• lacrimal glands exhibit periductal lymphocyte infiltration unlike in wild-type mice
• mice exhibit dacryoadenitis unlike wild-type mice

cellular
• FTY720-treated mice exhibit an accumulation of mature thymocytes in the cortex rather than medulla of the thymus as in similarly treated wild-type mice

hematopoietic system
• FTY720-treated mice exhibit an accumulation of mature thymocytes in the cortex rather than medulla of the thymus as in similarly treated wild-type mice

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Sjogren's syndrome DOID:12894 OMIM:270150
J:110910




Genotype
MGI:2660691
hm4
Allelic
Composition
plt/plt
Genetic
Background
involves: DDD/1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
plt mutation (4 available); any plt mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• the total number of T cells in lymph nodes is smaller than in BALB/c mice
• the number of either CD4+ or CD8+ T cells is decreased compared to in CBA, B6, C3H and BALB/c mice
• the number of T cells in the blood and spleen is increased compared to in wild-type mice
• the number of T cells in the peripheral lymph nodes and Peyer's patches with memory phenotype is increased compared to in wild-type mice
• unlike in wild-type spleens, T cells are found within the red pulp
• unlike in wild-type spleens, few T cells are found within the white pulp
• most Peyer's patches are smaller than in wild-type mice
• T cells are hardly observed in T cell zones but are observed in B cell zones (J:47460)
• low density of T cells in subcortical area (J:47819)
• the number of lymph node cells is reduced by 10 and 6 times in males and females, respectively, than in CBA and B6 mice (J:15290)
• T cell cellularity within the peripheral lymph nodes is decreased (J:47460)
• the amount of T cells in the subcortical area is extremely low
• T cell migration into peripheral lymph nodes, Peyer's patches and the spleen is defective (J:47460)
• however, neutrophil and macrophage recruitment stimulated by thioglycolate is normal (J:47460)
• T cell migration into lymph nodes is defective (J:47819)

hematopoietic system
• T cell migration into peripheral lymph nodes, Peyer's patches and the spleen is defective (J:47460)
• however, neutrophil and macrophage recruitment stimulated by thioglycolate is normal (J:47460)
• T cell migration into lymph nodes is defective (J:47819)
• the total number of T cells in lymph nodes is smaller than in BALB/c mice
• the number of either CD4+ or CD8+ T cells is decreased compared to in CBA, B6, C3H and BALB/c mice
• the number of T cells in the blood and spleen is increased compared to in wild-type mice
• the number of T cells in the peripheral lymph nodes and Peyer's patches with memory phenotype is increased compared to in wild-type mice
• unlike in wild-type spleens, T cells are found within the red pulp
• unlike in wild-type spleens, few T cells are found within the white pulp

cellular
• T cell migration into peripheral lymph nodes, Peyer's patches and the spleen is defective (J:47460)
• however, neutrophil and macrophage recruitment stimulated by thioglycolate is normal (J:47460)
• T cell migration into lymph nodes is defective (J:47819)





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)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
11/12/2024
MGI 6.24
The Jackson Laboratory