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T Aoki

Publications and source records attributed to T Aoki.

At least 1,261 records · Page 70Linked to original sources
PubMed1972

Immune and natural antibodies to syngeneic murine plasma cell tumors.

Cytotoxic antibody to a plasma cell tumor antigen was produced in syngeneic BALB mice by immunization with viable or inactivated plasma cell tumors. Antibody with the same specificity was found in the sera of normal BALB and other strains of mice. This natural antibody reacted with an antigen with characteristics indistinguishable from the previously described alloantigen, PC.1, and with viral envelope antigen, chiVEA. The incidence of cytotoxic reactivity and the antibody titers reached a peak in normal BALB mice at 3-4 months of age, and were lower in 9-12-month old mice. The sera of germfree mice had lower reactivity; but when the mice were transferred to conventional conditions, their sera soon became as active as those of conventional mice. A virus common to all plasma cell tumors, which is present in latent form in some normal tissues of BALB and other PC.1 positive strains, is suggested as the cause for the PC.1 antigen and for the appearance of natural antibody to it. The considerable evidence for the close association of a virus with plasma cell tumors is presented.

Animals↗
PubMed1972

Viral and cellular surface antigens of murine leukemias and myelomas. Serological analysis by immunoelectron microscopy.

IMMUNOELECTRON MICROSCOPY (IEM) OF MOUSE CELLS WHICH WERE PRODUCTIVELY INFECTED WITH MURINE LEUKEMIA VIRUS (MULV) YIELDED THE FOLLOWING CONCLUSIONS: See PDF for Structure With two exceptions, the alloantigens H-2, theta, Ly-A, and Ly-B were not present on complete or incomplete virions produced by cells bearing these antigens.The exceptions were H-2(k) (but not H-2(b)) and theta both appeared on only a minority of virions and never on more than a small part of the circumference. The incidental discovery of an additional envelope antigen on virions produced by a BALB/c mouse myeloma but lacking from passage A Gross virions distinguishes these two viruses as MuLV subtypes; it also illustrates that IEM can be applied as a primary tool for antigenic analysis, as well as for its usual purpose of finding out where antigens are situated.

AKR murine leukemia virus↗
PubMed1972

The antibody response of mice to murine leukemia virus in spontaneous infection: absence of classical immunologic tolerance (AKR mice-complement-fixing antibodies-lymphocytic choriomeningitis virus-immunofluorescence-glomerular deposits of antigen-antibody complexes).

Gross murine leukemia virus is the etiologic agent of spontaneous leukemias of AKR mice. Despite the persistence of the Gross virus throughout their life, these mice are not immunologically tolerant to the virus. Specific antibodies to Gross antigens can be detected in the kidney where they have been deposited in the glomeruli, apparently in the form of Gross antigen-antibody complexes.

AKR murine leukemia virus↗
PubMed1972

Wild-type gross leukemia virus: classification of soluble antigens (GSA).

By inhibiting techniques using indirect immunofluorescence tests and indirect immunoelectron microscopy, the G(Gross) soluble antigens (GSA) in the body fluids of AKR and C58 mice, which have a high incidence of spontaneous leukemia, were classified according to the known specificity of G antigens in the murine Gross leukemia system. GSA existing in the plasma of nonleukemic and leukemic AKR mice and in the ascitic fluid of transplanted AKR spontaneous leukemia K36 showed the several specificities corresponding to G cell surface antigens, GCSAa, b, and c, and type-specific and group-specific viral envelope antigens, tsVEA and gsVEA, respectively. However, the plasma of nonleukemic C58 mice lacks GSAc, which can be recognized by the G-typing mouse serum. GSA corresponding to G(IX) antigen was not detected in the body fluids.

AKR murine leukemia virus↗
PubMed1972

Chromatographic separation and antigenic analysis of proteins of the oncornaviruses. II. Mammalian leukemia-sarcoma viruses.

Proteins of leukemia and sarcoma viruses from the chicken, mouse, hamster, and cat were analyzed by gel filtration in guanidine hydrochloride. The mammalian viruses were found to contain six major proteins, whereas the avian viruses contained seven proteins. Proteins of viruses from different mammalian species had the same molecular weights which also closely resembled the molecular weights of the six equivalent avian viral proteins. These results defined a basic similarity in protein composition for the C-type viruses of avian and mammalian origin. The two glyco-proteins of murine leukemia virus were identified immunologically as constituents of the viral membrane. Antisera prepared against other proteins distinguished individual internal viral antigens in immunodiffusion tests and also reacted in immunofluorescence with cytoplasmic components of infected cells. Antisera which reacted with the major internal viral proteins did not contain antibodies inhibitory to the viral reverse transcriptase.

Alpharetrovirus↗