Fas-mediated apoptosis of hematopodetic progenitor cells in murine cytomegalovirus infected mice

Research output: Contribution to journalArticle

Abstract

Cytomegalovirus (CMV) has been shown to cause myelosuppression due to various mechanisms, direct effects on hematopoietic progenitor cells or alterations of stromal cell function. In the present study, we investigated the in vivo effects of tnurine CMV (MCMV) infection on hematopoietic progenitor cells. Inoculation of BALB/c mice with 1×105 PFU (0.2LD50) of MCMV resulted in 44% reduction of bone marrow cellularity at day5 after infection (P<0.01), which recovered thereafter. Lineage marker negative. Sea-1 and c-kit positive (Lin-Sca-1+ c-kit+) fraction of bone marrow cells, shown to function as primitive hematopoietic progenitor cells, increased in number after infection with the highest level at day? (10 fold increase, A<0.01). In contrast, reduction of total number of colony-forming unit-spleen (CFU-S) was noted after infection, 51% of control (P< 0.01) at day 3, which recovered to the level higher than control at day?. Fas antigen expression in UirSca-1+ and Lin c-Jb'f fraction increased after infection with the highest level at day3. Cells undergoing apoptosis in Liir fraction increased at day3, from 0.10% in control to 1.49% (P< 0.01). These observations lead us to conclude that, although the phenotypically determined progenitor cells, Lin-Sca- l+c-kit+ cells, increase in number as a host response to MCMV infection, their functional ability is impaired partially due to increased Fas expression and apoptosis.

Original languageEnglish
Pages (from-to)1083
Number of pages1
JournalExperimental Hematology
Volume24
Issue number9
Publication statusPublished - 1996

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Muromegalovirus
Stem Cells
Hematopoietic Stem Cells
Apoptosis
Infection
CD95 Antigens
Cytomegalovirus Infections
Infection Control
Stromal Cells
Cytomegalovirus
Oceans and Seas
Bone Marrow Cells
Spleen
Bone Marrow

ASJC Scopus subject areas

  • Cancer Research
  • Cell Biology
  • Genetics
  • Hematology
  • Oncology
  • Transplantation

Cite this

Fas-mediated apoptosis of hematopodetic progenitor cells in murine cytomegalovirus infected mice. / Mori, Takehiko.

In: Experimental Hematology, Vol. 24, No. 9, 1996, p. 1083.

Research output: Contribution to journalArticle

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abstract = "Cytomegalovirus (CMV) has been shown to cause myelosuppression due to various mechanisms, direct effects on hematopoietic progenitor cells or alterations of stromal cell function. In the present study, we investigated the in vivo effects of tnurine CMV (MCMV) infection on hematopoietic progenitor cells. Inoculation of BALB/c mice with 1×105 PFU (0.2LD50) of MCMV resulted in 44{\%} reduction of bone marrow cellularity at day5 after infection (P<0.01), which recovered thereafter. Lineage marker negative. Sea-1 and c-kit positive (Lin-Sca-1+ c-kit+) fraction of bone marrow cells, shown to function as primitive hematopoietic progenitor cells, increased in number after infection with the highest level at day? (10 fold increase, A<0.01). In contrast, reduction of total number of colony-forming unit-spleen (CFU-S) was noted after infection, 51{\%} of control (P< 0.01) at day 3, which recovered to the level higher than control at day?. Fas antigen expression in UirSca-1+ and Lin c-Jb'f fraction increased after infection with the highest level at day3. Cells undergoing apoptosis in Liir fraction increased at day3, from 0.10{\%} in control to 1.49{\%} (P< 0.01). These observations lead us to conclude that, although the phenotypically determined progenitor cells, Lin-Sca- l+c-kit+ cells, increase in number as a host response to MCMV infection, their functional ability is impaired partially due to increased Fas expression and apoptosis.",
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