Immunological unresponsiveness and apoptotic cell death of T cells in measles virus infection

Addae, M.M.; Komada, Y.; Zhang, X.; Sakurai, M.

Immunological unresponsiveness and apoptotic cell death of T cells in measles virus infection

Date

1995

Authors

Publisher

Acta Paediatrica Japonica

Abstract

The phenotypic alterations associated with T cells during measles virus infection have been demonstrated and an attempt has been made to show programmed cell death (PCD) of T cells activated in vivo. During the acute phase of illness, activated T cells increased rapidly. Memory T cells (CD45RO+), especially CD8+ memory T cells also tend to increase. During the recovery phase, CD8+ T cells declined rapidly, and naive (CD45RA+) T cells increased in numbers. The anti-CD3 monoclonal antibody-induced expression of interleukin-2 receptor (CD25) was suppressed. However, the addition of phorbol 12-myristate 13-acetate (PMA) caused the significant recovery of CD25 expression. In addition, PCD of activated T cells from measles patients was induced in culture. After triggering of the T cell receptor-CD3 complex, cells became more susceptible to PCD. Interestingly, the addition of PMA could inhibit PCD of activated T cells. Taken together, these data suggest unresponsiveness and activation-induced cell death of T cells during the primary response to measles virus antigens, depending on the activation status of protein kinase C.

Keywords

Apoptosis/*immunology, Case-Control Studies, Child, Child, Preschool, Humans, Infant, Measles/*immunology, Protein Kinase C/blood/immunology, Receptors, Interleukin-2, T-Lymphocytes/immunology/*pathology, Tetradecanoylphorbol Acetate/pharmacology

Citation

Addae, M. M., Komada, Y., Zhang, X. -., & Sakurai, M. (1995). Immunological unresponsiveness and apoptotic cell death of T cells in measles virus infection. Acta Paediatrica Japonica (Overseas Edition), 37(3), 308-314