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Phenotypes Associated with This Genotype
Genotype
MGI:4843447
Allelic
Composition
Tg(Lck-Notch3)#Issc/0
Genetic
Background
involves: C57BL/6 * DBA/2
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No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• 80% die between 10-12 weeks of age and by 16 weeks of age, 95% die (J:63300)
• 95% of mice die by 16 weeks of age with multicentric T-cell lymphomas (J:96010)

neoplasm
• 95% of mice die by 16 weeks of age with multicentric T-cell lymphomas
• thymus, spleen, and lymph nodes show massive infiltration by a monotonous lymphoblastic cell population
• mutants develop aggressive multicentric T-cell lymphomas showing features of lymphoblastic lymphoma with high penetrance by 7 weeks of age
• tumors sustain characteristics of immature thymocytes, including expression of CD25, pTalpha, and activated NF-kappaB
• tumor cell infiltration is seen in the liver, lungs, kidney, bone marrow and peripheral blood, indicating leukemic phase of the disease

behavior/neurological

immune system
• hyperplastic thymus is seen in some mutants at 5-6 weeks of age
• in 3 week old mutants, particularly the late double negative cells
• 95% of mice die by 16 weeks of age with multicentric T-cell lymphomas
• thymus, spleen, and lymph nodes show massive infiltration by a monotonous lymphoblastic cell population
• mutants develop aggressive multicentric T-cell lymphomas showing features of lymphoblastic lymphoma with high penetrance by 7 weeks of age
• tumors sustain characteristics of immature thymocytes, including expression of CD25, pTalpha, and activated NF-kappaB
• 5- to 6-fold increase in size and weight of spleen at 5-6 weeks of age
• disruption of thymocyte differentiation; all thymocyte subsets express high levels of CD25 and are broadly distributed in the cortex and medulla of the thymus, indicating a failure to downregulate CD25 expression the occurs normally in double positive and single positive subsets after 17-18 dpc
• 5- to 6-fold increase in size and weight of peripheral (axillary, cervical, and abdominal) lymph nodes at 5-6 weeks of age

hematopoietic system
• hyperplastic thymus is seen in some mutants at 5-6 weeks of age
• in 3 week old mutants, particularly the late double negative cells
• 95% of mice die by 16 weeks of age with multicentric T-cell lymphomas
• thymus, spleen, and lymph nodes show massive infiltration by a monotonous lymphoblastic cell population
• mutants develop aggressive multicentric T-cell lymphomas showing features of lymphoblastic lymphoma with high penetrance by 7 weeks of age
• tumors sustain characteristics of immature thymocytes, including expression of CD25, pTalpha, and activated NF-kappaB
• 5- to 6-fold increase in size and weight of spleen at 5-6 weeks of age
• disruption of thymocyte differentiation; all thymocyte subsets express high levels of CD25 and are broadly distributed in the cortex and medulla of the thymus, indicating a failure to downregulate CD25 expression the occurs normally in double positive and single positive subsets after 17-18 dpc

endocrine/exocrine glands
• hyperplastic thymus is seen in some mutants at 5-6 weeks of age
• in 3 week old mutants, particularly the late double negative cells
• 95% of mice die by 16 weeks of age with multicentric T-cell lymphomas
• thymus, spleen, and lymph nodes show massive infiltration by a monotonous lymphoblastic cell population
• mutants develop aggressive multicentric T-cell lymphomas showing features of lymphoblastic lymphoma with high penetrance by 7 weeks of age
• tumors sustain characteristics of immature thymocytes, including expression of CD25, pTalpha, and activated NF-kappaB

growth/size/body
• 5- to 6-fold increase in size and weight of spleen at 5-6 weeks of age

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
acute lymphoblastic leukemia DOID:9952 OMIM:247640
OMIM:613065
J:63300


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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
12/10/2024
MGI 6.24
The Jackson Laboratory