Methods and compositions for prolonging elimination half-times of bioactive compounds
    71.
    发明授权
    Methods and compositions for prolonging elimination half-times of bioactive compounds 有权
    延长消除半衰期生物活性化合物的方法和组合物

    公开(公告)号:US07635749B2

    公开(公告)日:2009-12-22

    申请号:US11535202

    申请日:2006-09-26

    摘要: Peptide ligands having affinity for IgG or for serum albumin are disclosed. Also disclosed are hybrid molecules comprising a peptide ligand domain and an active domain. The active domain may comprise any molecule having utility as a therapeutic or diagnostic agent The hybrid molecules of the invention may be prepared using any of a number techniques including production in and purification from recombinant organisms transformed or transfected with an isolated nucleic acid encoding the hybrid molecule, or by chemical synthesis of the hybrid. The hybrid molecules have utility as agents to alter the elimination half-times of active domain molecules. Elimination half-time is altered by generating a hybrid molecule of the present invention wherein the peptide ligand has binding affinity for a plasma protein. In a preferred embodiment, a bioactive molecule having a short elimination half-time is incorporated as or into an active domain of the hybrid molecules of the invention, and the binding affinity of the peptide ligand domain prolongs the elimination half-time of the hybrid as compared to that of the bioactive molecule.

    摘要翻译: 公开了对IgG或血清白蛋白具有亲和力的肽配体。 还公开了包含肽配体结构域和活性结构域的杂合分子。 活性结构域可以包含具有作为治疗或诊断剂的效用的任何分子。本发明的杂合分子可以使用数字技术中的任何一种来制备,包括在用编码杂合分子的分离的核酸转化或转染的重组生物中产生和纯化 ,或通过混合物的化学合成。 杂化分子具有用作改变活性结构域分子的消除半衰期的试剂。 通过产生本发明的杂合分子来改变消除半衰期,其中肽配体对血浆蛋白具有结合亲和力。 在优选的实施方案中,具有短消除半衰期的生物活性分子作为或掺入本发明的杂交分子的活性结构域,并且肽配体结构域的结合亲和力将杂交体的消除半衰期延长 与生物活性分子相比。

    Therapeutic compositions comprising anti-IGE antibodies and immunosuppressive agent
    78.
    发明授权
    Therapeutic compositions comprising anti-IGE antibodies and immunosuppressive agent 有权
    包含抗IGE抗体和免疫抑制剂的治疗组合物

    公开(公告)号:US06723833B1

    公开(公告)日:2004-04-20

    申请号:US09716028

    申请日:2000-11-17

    IPC分类号: C07K1600

    摘要: The present invention relates to a method for adjusting the affinity of a polypeptide to a target molecule by a combination of steps, including: (1) the identification of aspartyl residues which are prone to isomerization; (2) the substitution of alternative residues and screening the resulting mutants for affinity against the target molecule. In a preferred embodiment, the method of substituting residues is affinity maturation with phage display (AMPD). In a further preferred embodiment the polypeptide is an antibody and the target molecule is an antigen. In a further preferred embodiment, the antibody is anti-IgE and the target molecule is IgE. In another embodiment, the invention relates to an anti-IgE antibody having improved affinity to IgE.

    摘要翻译: 本发明涉及通过以下步骤的组合来调节多肽与靶分子的亲和力的方法,包括:(1)鉴定易于异构化的天冬氨酰残基; (2)替代替代残基并筛选得到的突变体对靶分子的亲合力。 在优选的实施方案中,取代残基的方法是用噬菌体展示(AMPD)进行亲和力成熟。 在另一优选实施方案中,多肽是抗体,靶分子是抗原。 在另一个优选的实施方案中,抗体是抗IgE,靶分子是IgE。 在另一个实施方案中,本发明涉及对IgE具有改善的亲和力的抗IgE抗体。