Interactions between immune cells and antibody in protection from fatal Sindbis virus encephalitis

Research output: Contribution to journalArticle

Abstract

Transfer of anti-Sindbis virus serum, obtained from peripherally inoculated donors, protected mice from an otherwise fatal intracerebral infection with neuroadapted Sindbis virus (NSV). F(ab)'2 preparations of serum were not protective, indicating that the Fc piece of immunoglobulin G was important. Complement-depleted animals were protected with anti-NSV serum, ruling out as essential the complement-fixing function of the Fc piece. The presence of protective antibody correlated with the ability of serum to inhibit T-cell cytotoxicity. However, experiments using athymic nude mice showed that T cells played no role in killing the mice since the 50% lethal dose was the same as that in normal BALB/c mice, and that T cells were not required for protection since athymic nude mice were protected with antibody alone. Cyclophosphamide treatment of NSV-infected mice ablated the protective capacity of anti-NSV serum. Therefore, a non-T cell, cyclophosphamide-sensitive cell was required for antibody-mediated protection.

Original languageEnglish (US)
Pages (from-to)320-324
Number of pages5
JournalInfection and Immunity
Volume23
Issue number2
StatePublished - 1979

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Sindbis Virus
Encephalitis
Nude Mice
Antibodies
Serum
T-Lymphocytes
Cyclophosphamide
Immunoglobulin Fc Fragments
Lethal Dose 50
Immunoglobulin G
Infection

ASJC Scopus subject areas

  • Immunology

Cite this

Interactions between immune cells and antibody in protection from fatal Sindbis virus encephalitis. / Hirsch, R. L.; Griffin, Diane; Johnson, Richard.

In: Infection and Immunity, Vol. 23, No. 2, 1979, p. 320-324.

Research output: Contribution to journalArticle

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