Abstract:
:HER-2/neu is a tumour antigen that is overexpressed in human breast tumours. Among the vaccine strategies developed to overcome immune tolerance to self-proteins, vaccination with anti-idiotypic (anti-Id) antibodies has been described as a promising approach for treatment of several malignant diseases. To develop an active immunotherapy for cancer patients positive for HER-2/neu, we investigated immunisation with human anti-Id single-chain fragments (scFv) mimicking the conformation of HER-2/neu protein to induce a humoral response in mice. We selected by phage display two human anti-Id scFv (Ab2beta) directed against trastuzumab F(ab')2 fragments (Ab1), a humanised anti-HER-2/neu monoclonal antibody. Using competitive ELISA and Biacore biosensor analysis, we showed that anti-Id scFv 40 and scFv 69 could inhibit HER-2/neu binding to trastuzumab. Following vaccination of BALB/c mice with the soluble or phage-displayed scFv, Ab3 polyclonal antibodies, and among them Ab1' antibodies able to bind HER-2/neu, were detected in the sera of the immunised mice. These results demonstrate that the human anti-Id scFv could act as a surrogate antigen for HER-2/neu. The present study strongly suggests that the novel 30 kDa human mini-antibody could be used as an anti-idiotype-based vaccine formulation to induce an effective humoral response in patients bearing HER-2/neu-positive tumours.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Coelho M,Gauthier P,Pugnière M,Roquet F,Pèlegrin A,Navarro-Teulon Idoi
10.1038/sj.bjc.6601825subject
Has Abstractpub_date
2004-05-17 00:00:00pages
2032-41issue
10eissn
0007-0920issn
1532-1827pii
6601825journal_volume
90pub_type
杂志文章abstract:BACKGROUND:Although the anti-tumour effect of cyclooxygenase-2 (Cox-2) inhibitors in invasive bladder cancer has been confirmed, its mechanisms of action are unclear. Recently, the concept of an epithelial-to-mesenchymal transition (EMT) promoting carcinoma progression has been suggested, and a key feature of the EMT i...
journal_title:British journal of cancer
pub_type: 杂志文章
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journal_title:British journal of cancer
pub_type: 杂志文章
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abstract::Counter-irritation (CI) triggered by different non-specific irritant stimuli delayed the growth of a murine tumour of non-detected immunogenicity. The syngeneic LB tumour transplant by itself also induced CI and decreased the number of leukocytes migrating to a secondary s.c. irritant stimulus, e.g. sponge or carragee...
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1038/sj.bjc.6603748
更新日期:2007-05-21 00:00:00
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更新日期:2002-05-20 00:00:00
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journal_title:British journal of cancer
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更新日期:2002-10-21 00:00:00
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更新日期:2006-08-07 00:00:00
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journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1998.23
更新日期:1998-01-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2004-04-19 00:00:00
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