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  • Title: Vaccination with monoclonal anti-idiotypic antibody on immunocompetent mice bearing human ovarian carcinoma.
    Author: Qian H, Wang J, Feng J.
    Journal: Chin Med J (Engl); 1997 Apr; 110(4):259-63. PubMed ID: 9594224.
    Abstract:
    OBJECTIVE: To observe the effects of anti-idiotypic monoclonal antibody 6B11 against ovarian carcinoma SKOV3 on immunocompetent mice BCF1 both in vivo and in vitro, so as to investigate the possibility of using it as a tumor vaccine. METHODS: After immunization with 6B11 and normal mice (NM) IgG respectively on 2 groups of BCF1, blood, lymphocytes and tumor tissues were taken every other day. Ab3 was tested from blood samples. Subpopulations of lymphocytes were examined by FCM. The lymphocytes from immunized BCF1 were also cultured with SKOV3 to observe the chemotaxis and killing effects. Serial tissue sections were taken from BCF1 after immunization by SRCA implantation of SKOV3. TIL and visible cancer cells were examined carefully and compared with those in the controls. RESULTS: Ab3 rose quickly after immunization with 6B11 but lowered down gradually till the 9th week. The CD4+/ CD8+ ratio of BCF1 changed markedly after immunization with 6B11. The immunized lymphocytes showed a beautiful chemotaxis with and killing effect on SKOV3. During in vivo examinations, TIL were found significantly earlier in the immunized BCF1 than in the controls and reached the peak earlier in the former (on the 6th day) than in the latter, while the viability of tumor cells was vice versa between the two groups. CONCLUSION: 6B11 may be used as a vaccine for not only active immunization but also prevention of ovarian carcinoma.
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