Accelerated apoptosis of peripheral blood monocytes in Cebpb-deficient mice

Akihiro Tamura, Hideyo Hirai, Asumi Yokota, Atsushi Sato, Tsukimi Shoji, Takahiro Kashiwagi, Masaki Iwasa, Aya Fujishiro, Yasuo Miura, Taira Maekawa

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22 Citations (Scopus)


The CCAAT/enhancer-binding protein β (C/EBPβ) transcription factor is required for granulopoiesis under stress conditions. However, little is known about its roles in steady state hematopoiesis. Here, we analyzed the peripheral blood and bone marrow of Cebpb-/- mice at steady state by flow cytometry and unexpectedly found that the number of peripheral blood monocytes was severely reduced, while the number of bone marrow monocytes was maintained. The ability of Cebpb-/- bone marrow cells to give rise to macrophages/monocytes in vitro was comparable to that of wild-type bone marrow cells. Apoptosis of monocytes was enhanced in the peripheral blood, but not in the bone marrow of Cebpb-/- mice. These results indicate that C/EBPβ is required for the survival of monocytes in peripheral blood.

Original languageEnglish
Pages (from-to)654-658
Number of pages5
JournalBiochemical and Biophysical Research Communications
Issue number2
Publication statusPublished - 30-07-2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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