Nematode polypeptide adjuvant
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United States of America Patent
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app pub date -
Jan 21, 2004
filing date -
Jan 22, 2003
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Abstract
The invention relates to a set of novel immunological adjuvants based upon so called 'polyladder' proteins of nematode worms. These proteins are typified by repeating units separated by a protease cleavage motif of RX(K/R)R or RXFR where R is ariginine, X is any amino acid, K is lysine and F is phenylalanine. These motifs are preceded by a cysteine residue at around 7, 8 or 9 residues upstream. Polyladder proteins or fragments of polyladder proteins may be used as immunological adjuvants either mixed with, or conjugated to a vaccine antigen, and will strongly enhance the immune response against the antigen. Conjugation may take the form of a genetic fusion between adjuvant and antigen. Antigens may be derived from pathogens, or may be tumour antigens, autoantigens, or antigens of other kinds. Vaccines may be used for prophylaxis or therapy.
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