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2011-01-01Zeitschriftenartikel DOI: 10.4161/hv.7.0.14555
Towards an AIDS vaccine: The transmembrane envelope protein as target for broadly neutralizing antibodies
Denner, Joachim
Although the development of an effective vaccine is the main goal in the fight against AIDS, all attempts by numerous laboratories to develop a vaccine have failed so far. In addition, it is still unclear whether cytotoxic T cells or neutralizing antibodies or both should be induced. The major advantage of neutralizing antibodies is their ability to prevent infection and subsequent integration of the provirus into the cellular genome where it may persist in a form invisible to the immune system. Broadly neutralizing antibodies have been found in HIV infected individuals, including antibodies directed against a highly conserved region in the membrane proximal external region (MPER) of the transmembrane envelope (TM) protein gp41 of HIV-1. We successfully induced neutralizing antibodies against different gammaretroviruses by immunization with their respective TM proteins. These antibodies recognized epitopes not only in the MPER but also in the fusion peptide proximal region of the TM protein. In the case of feline leukaemia virus (FeLV), these antibodies protected cats from antigenemia following challenge. To understand the mechanism of neutralization, the interactions between neutralizing antibodies and their corresponding epitopes in the TM protein of gammaretroviruses and HIV-1 were analysed. These data may help to design antigens able to induce specific broadly neutralizing antibodies.
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DOI
10.4161/hv.7.0.14555
Permanent URL
https://doi.org/10.4161/hv.7.0.14555
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<a href="https://doi.org/10.4161/hv.7.0.14555">https://doi.org/10.4161/hv.7.0.14555</a>