growth/size/body
• E15.5 fetuses are sometimes small in size
|
hematopoietic system
• megakaryopoiesis is severerly affected
• analysis of in vitro colony formation from mononuclear ells indicates that hematopoietic progenitor formation is normal, however AChE+ cells of CFU-Megs are larger indicating dysregulation of megakaryopoiesis
|
• megakaryocytes are larger in mutant fetuses than in wild-type
• megakaryocytes in the spleen are larger than in wild-type spleen
• megakaryocytes contain a large volume of cytoplasm with a paucity of cytoplasmic organelles
• demarcation membrane is underdeveloped in megakaryocytes
|
• impaired megakaryocyte differentiation
• mutants exhibit dysregulated proliferation and impaired cytoplasmic maturation of megakaryocytes in adulthood
|
• number of megakaryocytes is increased in E17.5 mutant livers and in hematopoietic tissues of adults
|
• peripheral erythrocytes are morphologically abnormal
• in fetuses, circulation of nucleated erythroid cells is often observed whereas in wild-type mice, erythrocytes are uniformly enucleated
• enucleated erythroid cells are rarely seen in the fetal liver
|
• mutants require longer time (11 days versus 7 days for wild-type mice) to recover from PHZ-induced anemia, indicating attenuated stress erythropoiesis
|
anisocytosis
(
J:89054
)
|
• gross morphologic abnormalities of platelets are seen
|
• proplatelet formation is impaired in the bone marrow cells of mutants
|
• mutants exhibit severe thrombocytopenia without anemia
|
• mutants exhibit an increased number of large mononuclear cells in the bone marrow
|
immune system
• proplatelet formation is impaired in the bone marrow cells of mutants
|
• mutants exhibit an increased number of large mononuclear cells in the bone marrow
|
integument
cellular
• impaired megakaryocyte differentiation
• mutants exhibit dysregulated proliferation and impaired cytoplasmic maturation of megakaryocytes in adulthood
|
Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
thrombocytopenia | DOID:1588 |
OMIM:188000 OMIM:273900 OMIM:300367 OMIM:313900 OMIM:612004 |
J:89054 |