Inverse expression of bcl-2 protein and Fas antigen in lymphoblasts in peripheral lymph nodes and activated peripheral blood T and B lymphocytes

Tadashi Yoshino, Eisaku Kondo, Liu Cao, Kiyoshi Takahashi, Kazuhiko Hayashi, Shintaro Nomura, Tadaatsu Akagi

Research output: Contribution to journalArticle

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Abstract

To examine the regulatory mechanism of apoptosis in lymphoid cells, expression of both bcl-2 protein and Fas antigen was investigated in reactive lymph nodes, in resting lymphocytes from peripheral blood (PBLs), and in PBLs stimulated with pokeweed mitogen, interleukin-4 (IL-4) + anti-IgM antibody, IL-2 + anti-CD3 antibody, phytohemagglutinin + phorbol myristate acetate using immunohistochemistry and flow cytometry. Germinal center cells expressed a large amount of Fas antigen, which is associated with the induction of apoptosis in lymphoid cell lines, in contrast to the lack of bcl-2 protein as an apoptosis inhibitor. On the other hand, mantle zone lymphocytes expressed a high level of bcl-2 protein and less Fas antigen. This inverse expression of bcl-2 protein and Fas antigen was also shown in activated T and B lymphocytes from peripheral blood. These lymphoblasts fell into apoptosis dose-dependently in the presence of anti-Fas monoclonal antibody, but resting lymphocytes that expressed both bcl-2 protein and Fas antigen did not undergo apoptosis. These findings suggest that bcl-2 expression prevents the apoptosis of lymphoid cells induced by the Fas antigen-dependent mechanism and that apoptosis of lymphocytes is exquisitely controlled, at least in part, by regulation of the bcl-2 and Fas genes.

Original languageEnglish
Pages (from-to)1856-1861
Number of pages6
JournalBlood
Volume83
Issue number7
Publication statusPublished - Apr 1 1994

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CD95 Antigens
Lymphocytes
Blood
B-Lymphocytes
Lymph Nodes
Apoptosis
T-Lymphocytes
Proteins
anti-Fas monoclonal antibody
Anti-Idiotypic Antibodies
Inhibitor of Apoptosis Proteins
bcl-2 Genes
Pokeweed Mitogens
Germinal Center
Flow cytometry
Antibodies
Phytohemagglutinins
Tetradecanoylphorbol Acetate
Interleukin-4
Interleukin-2

ASJC Scopus subject areas

  • Hematology

Cite this

Inverse expression of bcl-2 protein and Fas antigen in lymphoblasts in peripheral lymph nodes and activated peripheral blood T and B lymphocytes. / Yoshino, Tadashi; Kondo, Eisaku; Cao, Liu; Takahashi, Kiyoshi; Hayashi, Kazuhiko; Nomura, Shintaro; Akagi, Tadaatsu.

In: Blood, Vol. 83, No. 7, 01.04.1994, p. 1856-1861.

Research output: Contribution to journalArticle

Yoshino, T, Kondo, E, Cao, L, Takahashi, K, Hayashi, K, Nomura, S & Akagi, T 1994, 'Inverse expression of bcl-2 protein and Fas antigen in lymphoblasts in peripheral lymph nodes and activated peripheral blood T and B lymphocytes', Blood, vol. 83, no. 7, pp. 1856-1861.
Yoshino, Tadashi ; Kondo, Eisaku ; Cao, Liu ; Takahashi, Kiyoshi ; Hayashi, Kazuhiko ; Nomura, Shintaro ; Akagi, Tadaatsu. / Inverse expression of bcl-2 protein and Fas antigen in lymphoblasts in peripheral lymph nodes and activated peripheral blood T and B lymphocytes. In: Blood. 1994 ; Vol. 83, No. 7. pp. 1856-1861.
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