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Critical Reviews™ in Immunology
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ISSN Imprimir: 1040-8401
ISSN En Línea: 2162-6472

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Critical Reviews™ in Immunology

DOI: 10.1615/CritRevImmunol.2014009988
pages 301-314

Mechanism of Activation-Induced Cell Death of T Cells and Regulation of FasL Expression

Rieko Arakaki
Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima Japan
Akiko Yamada
Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima Japan
Yasusei Kudo
Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima Japan
Yoshio Hayashi
Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima Japan
Naozumi Ishimaru
Department of Oral Molecular Pathology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima Japan

SINOPSIS

Activation-induced cell death (AICD) of T cells is a process for regulating the peripheral immune system. The fate of a T cell is controlled by numerous signals derived from various stimuli, such as antigens, cytokines, and chemokines. In healthy humans, overactivated or autoreactive T cells are harmful and are eliminated to maintain the immune system. AICD in T cells by Fas/FasL-mediated apoptosis is triggered by the switch from life to death through several signaling molecules. The control or distribution of Fas or FasL expression largely affects AICD of T cells. Although autoimmune diseases are considered to be induced by multiple factors, an impaired immune system with AICD by Fas/FasL-mediated apoptosis leads to the onset or development of autoimmunity. Based on published reports, this review describes the regulatory mechanisms involved in AICD of T cells by Fas/ FasL-mediated apoptosis and the associations between AICD and autoimmunity in humans and animal models.


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