title: Simian T cell leukemia virus type I-induced malignant adult T cell leukemia-like disease in a naturally infected African green monkey: implication of CD8+ T cell leukemia.
abstract: Spontaneous T cell leukemia was found in an African green monkey (Cercopithecus aethiops, AGM) naturally infected with simian T cell leukemia virus type I (STLV-I). The hematological features and the evidence for monoclonal integration of provirus DNA in the leukemic cells revealed that the leukemia was an ATL-like disease. The expression of surface markers on the leukemic cells indicated that they were defined as an activated CD8+ T cell subset. Together with the finding that seven in vitro spontaneously STLV-I-transformed cell lines were CD4-CD8+, it is likely that CD8+ T cells are transformed by STLV-I in AGMs, in contrast with human ATL. Finally, we assessed characteristics of the CD8 chains on these transformed cells. The result indicated that the leukemic cells expressed only the alpha chains but not the beta chains. However, in the case of in vitro-transformed cell lines the expression pattern of the CD8 chains varied in individual monkeys. Thus, STLV-I may preferentially transform CD8+ (both alphaalpha+ and alphabeta+) T cells in AGMs.
authors.affiliation: Tsukuba Primate Center, National Institute of Infectious Diseases, Ibaraki, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Akari
authors.forename: F
authors.initials: F
authors.lastname: Ono
authors.forename: I
authors.initials: I
authors.lastname: Sakakibara
authors.forename: H
authors.initials: H
authors.lastname: Takahashi
authors.forename: Y
authors.initials: Y
authors.lastname: Murayama
authors.forename: A
authors.initials: A
authors.lastname: Hiyaoka
authors.forename: K
authors.initials: K
authors.lastname: Terao
authors.forename: I
authors.initials: I
authors.lastname: Otani
authors.forename: R
authors.initials: R
authors.lastname: Mukai
authors.forename: A
authors.initials: A
authors.lastname: Adachi
authors.forename: Y
authors.initials: Y
authors.lastname: Yoshikawa
mesh_terms: D000328:Adult; D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology / Q000821:virology*; D002472:Cell Transformation, Viral; D002522:Chlorocebus aethiops; D006800:Deltaretrovirus Infections / Q000276:immunology / Q000662:veterinary* / Q000821:virology*; D005260:Female; D006801:Humans; D015458:Leukemia, T-Cell / Q000276:immunology / Q000662:veterinary* / Q000821:virology*; D008992:Monkey Diseases / Q000276:immunology / Q000821:virology*; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000378:metabolism; D015303:Simian T-lymphotropic virus 1 / Q000472:pathogenicity*; D016176:T-Lymphocyte Subsets / Q000276:immunology / Q000821:virology
chemical_list: D016693:Receptors, Antigen, T-Cell, alpha-beta