DNA sequence and preparation of grass pollen allergen Phl p 4 by recombinant methods

摘要

The present invention relates to the preparation and use of recombinant variants of group 6 allergens of the Poaceae (true grasses), which are characterized by reduced IgE reactivity compared with known wild-type allergens and at the same time substantially retained reactivity with T-lymphocytes.

主权项

1. A method for the treatment of allergies in the triggering of which group 4 allergens of the Poaceae are involved in a subject in need thereof, comprising administering to said subject an effective amount of the polypeptide encoded by a DNA sequence selected from the group consisting of
(a) a DNA molecule encoding the polypeptide sequence of SEQ ID NO: 2, SEQ ID NO: 4 or SEQ ID NO: 6; (b) SEQ ID NO 1, SEQ ID NO 3 and SEQ ID NO 5; and (c) a DNA molecule encoding a polypeptide variant consisting of the polypeptide sequence of SEQ ID NO: 2 with the amino acid variations set forth in clones 1 to 11, wherein
(1) clone 1 consists of L54, I57, V62, S76, T100, N107, Y137, P141, T142, K189, Q219, K221, L227, I231, S235, T237, V238, K248, A258, 1264, K270, K282, L287, P299, A321, L322, S332, Q346, P347, T351, L357, N358, V362, S384, A410, D419, Y456, A457, K460, and E472;(2) clone 2 consists of L54, I57, V62, T76, T100, N107, Y137, P141, T142, K189, Q219, K221, I231, S235, T237, V238, K248, A258, I264, K270, K282, L287, P299, A321, L322, S332, Q346, P347, T351, L357, N358, V362, S384, A410, D419, Y456, A457, K460, and E472;(3) clone 3 consists of P141, K282, L287, P299, L347, and E351;(4) clone 4 consists of G289, A410, D419, Y456, A457, K460, and E472;(5) clone 5 consists of L347, E351, S384, A410, D419, Y456, A457, K460, and E472;(6) clone 6 consists of N107, Y137, P141, T142, K189, Q219, K221, I231, S235, T237, V238, K248, A258, 1264, K270, K282, L287, P299, A321, L322, S332, Q346, P347, T351, L357, N358, V362, S384, A410, D419, Y456, A457, and K460;(7) clone 7 consists of K248, A258, 1264, K270, K282, L287, P299, A321, L322, S332, Q346, P347, T351, L357, N358, V362, and S384;(8) clone 8 consists of Q219, K221, I231, S235, T237, V238, K248, A258, 1264, K270, K282, L287, P299, and E351;(9) clone 9 consists of M231, T246, A251, C263, G289, L307, L309, and E334;(10) clone 10 consists of Q219, K221, I231, S235, T237, M238, V242, V246, K248, A258, 1264, K270, K282, L287, P299, A321, L322, S332, Q346, P347, T351, N358, V362, S384, insertion of GA between positions 407 and 408, N452, Y456, A457, K460, and E472; and(11) clone 11 consists of insertion of GA between positions 407 and 408.