scholarly journals In vitro transformation of mouse bone marrow cells by the polycythemic strain of Friend leukemia virus.

1979 ◽  
Vol 76 (3) ◽  
pp. 1464-1468 ◽  
Author(s):  
R. Revoltella ◽  
L. Bertolini ◽  
C. Friend
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Leukemia Virus ◽  
Mouse Bone Marrow ◽  
In Vitro Transformation ◽  
Friend Leukemia ◽  
Friend Leukemia Virus ◽  
Mouse Bone Marrow Cells ◽  
Marrow Cells

Malignant Transformation of Mouse Bone Marrow Cells In Vitro Induced by 60 Co γ-Ray Irradiation

1984 ◽  
pp. 830-830
Author(s):  
F. M. Gao ◽  
X. L. Li ◽  
M. J. Qian ◽  
W. H. Wang ◽  
F. Q. Qi ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Malignant Transformation ◽  
Bone Marrow Cells ◽  
Mouse Bone Marrow ◽  
Γ Ray ◽  
Mouse Bone Marrow Cells ◽  
Marrow Cells

scholarly journals Friend Leukemia Virus Infection Enhances DNA Damage-Induced Apoptosis of Hematopoietic Cells, Causing Lethal Anemia in C3H Hosts

2002 ◽  
Vol 76 (15) ◽  
pp. 7790-7798 ◽  
Author(s):  
Masanobu Kitagawa ◽  
Shuichi Yamaguchi ◽  
Maki Hasegawa ◽  
Kaoru Tanaka ◽  
Toshihiko Sado ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Dna Damage ◽  
Knockout Mice ◽  
Bone Marrow Cells ◽  
Leukemia Virus ◽  
Hematopoietic Cells ◽  
Friend Leukemia ◽  
C3h Mice ◽  
Friend Leukemia Virus ◽  
Marrow Cells

ABSTRACT Exposure of hematopoietic progenitors to gamma irradiation induces p53-dependent apoptosis. However, host responses to DNA damage are not uniform and can be modified by various factors. Here, we report that a split low-dose total-body irradiation (TBI) (1.5 Gy twice) to the host causes prominent apoptosis in bone marrow cells of Friend leukemia virus (FLV)-infected C3H mice but not in those of FLV-infected DBA mice. In C3H mice, the apoptosis occurs rapidly and progressively in erythroid cells, leading to lethal host anemia, although treatment with FLV alone or TBI alone induced minimal apoptosis in bone marrow cells. A marked accumulation of P53 protein was demonstrated in bone marrow cells from FLV-infected C3H mice 12 h after treatment with TBI. Although a similar accumulation of P53 was also observed in bone marrow cells from FLV-infected DBA mice treated with TBI, the amount appeared to be parallel to that of mice treated with TBI alone and was much lower than that of FLV- plus TBI-treated C3H mice. To determine the association of p53 with the prominent enhancement of apoptosis in FLV- plus TBI-treated C3H mice, p53 knockout mice of the C3H background (C3H p53−/− ) were infected with FLV and treated with TBI. As expected, p53 knockout mice exhibited a very low frequency of apoptosis in the bone marrow after treatment with FLV plus TBI. Further, C3H p53−/− → C3H p53+/+ bone marrow chimeric mice treated with FLV plus TBI survived even longer than the chimeras treated with FLV alone. These findings indicate that infection with FLV strongly enhances radiation-induced apoptotic cell death of hematopoietic cells in host animals and that the apoptosis occurs through a p53-associated signaling pathway, although the response was not uniform in different host strains.

The effect of decitabine on megakaryocyte maturation and platelet release

2011 ◽  
Vol 106 (08) ◽  
pp. 337-343 ◽  
Author(s):  
Jianhui Wang ◽  
Zanhua Yi ◽  
Shiyang Wang ◽  
Zongdong Li
Keyword(s):  
Bone Marrow ◽  
Platelet Count ◽  
Bone Marrow Cells ◽  
Mouse Bone Marrow ◽  
Human Cord Blood ◽  
Primary Mouse ◽  
Platelet Release ◽  
Mouse Bone Marrow Cells ◽  
Marrow Cells

SummaryThrombocytopenia is a common feature of myelodysplastic syndromes (MDS). 5-aza-2’-deoxycytidine (decitabine) has been used to treat MDS with an approximately 20% response rate in thrombocytopenia. However, the mechanism of how decitabine increases platelet count is not clear. In this study, we investigated the effect of decitabine on megakaryocyte maturation and platelet release in the mouse. The effect of decitabine on megakaryocyte maturation was studied in an in vitro megakaryocyte differentiation model utilising mouse bone marrow cells and mouse megakaryoblastic cell line L8057. Decitabine (2.5 μM) is able to induce L8057 cells to differentiate into a megakaryocyte-like polyploidy cells with positive markers of acetylcholinesterase and αIIb integrin (CD41). Higher expression of αIIb integrin was also found in primary mouse bone marrow cells and human cord blood CD34+ cells cultured with both thrombopoietin and decitabine as compared to thrombopoietin alone. In addition, we noted a 30% platelet count increase in Balb/c mice 12 hours after the injection of decitabine at a clinically relevant dose (15 mg/m2), suggesting a rapid platelet release from the spleen or bone marrow. Our data suggest that decitabine increases platelet counts by enhancing platelet release and megakaryocyte maturation.

In vitro effects of OK-432 on irradiated mouse bone marrow cells

1994 ◽  
Vol 29 (3) ◽  
pp. 631-634 ◽  
Author(s):  
Masako Nose ◽  
Yoshiro Aoki ◽  
Yoshiko Kawase ◽  
Gen Suzuki ◽  
Makoto Akashi ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Cells ◽  
Mouse Bone Marrow ◽  
In Vitro Effects ◽  
Mouse Bone Marrow Cells ◽  
Marrow Cells
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