Establishment of resistance to Leishmania major infection in susceptible BALB/c mice requires parasite-specific CD8+ T cells

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Serval ID
serval:BIB_D40FFA0BAA06
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Establishment of resistance to Leishmania major infection in susceptible BALB/c mice requires parasite-specific CD8+ T cells
Journal
International Immunology
Author(s)
Muller  I., Pedrazzini  T., Kropf  P., Louis  J., Milon  G.
ISSN
0953-8178 (Print)
Publication state
Published
Issued date
06/1991
Volume
3
Number
6
Pages
587-97
Language
english
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Jun
Abstract
Although CD4+ T cells are generally accepted to be responsible for the determination of resistance to infection in experimental murine cutaneous leishmaniasis, a contribution of CD8+ lymphocytes to immunity can be demonstrated under certain well-defined conditions. Normally highly susceptible BALB/c mice can be rendered resistant to infection with Leishmania major promastigotes by a single injection of monoclonal anti-CD4 antibodies at the beginning of infection. Mice treated in such a way can heal their primary cutaneous lesions and acquire immunity to subsequent challenge infection. Both the resolution of the primary infection and the induced state of immunity to reinfection in these mice is shown to be dependent upon the anti-leishmanial effector functions of CD8+ T cells. Furthermore, in contrast to control infected BALB/c mice, which are unable to mount a delayed-type hypersensitivity (DTH) response to viable parasites, mice cured as a result of treatment with anti-CD4 antibodies in vivo exhibit a strong DTH response, which can be significantly reduced by injection of either anti-CD4 or anti-CD8 monoclonal antibodies prior to antigenic challenge with viable promastigotes. Moreover, increased numbers of specific CD8+ T cells, able to transfer Leishmania-specific DTH responses, were found in lymphoid organs of BALB/c mice rendered resistant to infection by immunointervention with anti-CD4 monoclonal antibodies at the beginning of infection. Neutralization in vivo of interleukin 4 during the course of infection in BALB/c mice also enables these otherwise susceptible mice to resolve their cutaneous lesions and to decrease the parasite burden in infected tissues. CD8+ T cells are required for both of these beneficial effects. Taken together, these results indicate that in the immune BALB/c mouse, as in the normally resistant CBA mouse, CD8+ lymphocytes are involved in the elimination of L. major and in the establishment and maintenance of immunity against infection with this parasite.
Keywords
Animals Antibodies, Monoclonal Antigens, CD4/antagonists & inhibitors Antigens, CD8 Antigens, Differentiation, T-Lymphocyte Cell Count Hypersensitivity, Delayed Immunotherapy, Adoptive Leishmania tropica/*immunology Leishmaniasis/*immunology/pathology Lymphoid Tissue/immunology/pathology Lymphokines/biosynthesis Mice Mice, Inbred BALB C T-Lymphocyte Subsets/*immunology
Pubmed
Web of science
Open Access
Yes
Create date
25/01/2008 8:45
Last modification date
01/10/2019 6:19
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