We have described an outbreak of simian acquired immune deficiency syndrome (SAIDS) in rhesus macaques at the California Primate Research Center (CPRC), readily reproduced the disease, identified and characterized the etiological agent and defined the major natural history features. SAIDS is caused by an exogenous type D retrovirus (SRV-1) related to but distinct from the Mason-Pfizer monkey virus. The virus is pantropic for lymphocytes (i.e., infects both T and B cells) and also grows readily in macrophages and certain epithelial cells. Koch's postulates have been met including induction of fatal SAIDS wtih molecularly cloned SRV-1. Other simian retroviruses including STLV-1 and STLV-III have been ruled out as causes of SAIDS at the CPRC. We have found a second serotype of this Type D virus in association with SAIDS and retroperitoneal fibrosis in Celebes and rhesus macaques at the Oregon Primate Center. The SAIDS viruses appear widespread in primate facilities. SRV-1 has been totally sequenced and a novel genetic structure revealed. It is not closely related to the human AIDS virus nor to the animal lentiviruses. An inactivated SRV-1 vaccine has protected monkeys against challenge with this virulent virus. This proposal is directed at gaining further knowledge of retrovirus induced immunosuppressive disease in monkeys by; 1) defining the temporal and spatial expression of virus and the virus induced immunological defects, 2) identifying the host and viral determinants of the disease. SAIDS is a good model for AIDS because it is a spontaneous retroviral infection that causes a fatal immunosuppressive disease in its natural host. These studies will be carried out by a multidsiciplinary team of investigators at the CPRC and will take advantage of productive collaborations with NIH, Industry, other Universities and other Primate Centers.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
5R01AI020573-07
Application #
3130313
Study Section
Pathology B Study Section (PTHB)
Project Start
1983-09-15
Project End
1990-08-31
Budget Start
1989-09-01
Budget End
1990-08-31
Support Year
7
Fiscal Year
1989
Total Cost
Indirect Cost
Name
University of California Davis
Department
Type
Schools of Medicine
DUNS #
094878337
City
Davis
State
CA
Country
United States
Zip Code
95618
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Lackner, A A; Moore, P F; Marx, P A et al. (1990) Immunohistochemical localization of type D retrovirus serotype 1 in the digestive tract of rhesus monkeys with simian AIDS. J Med Primatol 19:339-49
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Werner, L L; Malley, A; Torres, J V et al. (1990) Synthetic peptides of envelope proteins of two different strains of simian AIDS retrovirus (SRV-1 and SRV-2) represent unique antigenic determinants for serum neutralizing antibodies. Mol Immunol 27:1103-11
Heyes, M P; Mefford, I N; Quearry, B J et al. (1990) Increased ratio of quinolinic acid to kynurenic acid in cerebrospinal fluid of D retrovirus-infected rhesus macaques: relationship to clinical and viral status. Ann Neurol 27:666-75

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