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    • 5. 发明申请
    • HUMANIZED ANTI-CD22 ANTIBODIES AND THEIR USE IN TREATMENT OF ONCOLOGY, TRANSPLANTATION AND AUTOIMMUNE DISEASE
    • 人类抗CD22抗体及其在治疗肿瘤,移植和自发性疾病中的应用
    • WO2007103470A2
    • 2007-09-13
    • PCT/US2007005884
    • 2007-03-06
    • MEDIMMUNE INCAERES BIOMEDICAL LTDHILBERT DAVIDJONES TARRANWILLIAMS DAVID G
    • HILBERT DAVIDJONES TARRANWILLIAMS DAVID G
    • A61K39/395C07H21/04C07K16/18
    • C07K16/2803A61K2039/505C07K16/465C07K2317/24C07K2317/565C07K2317/567C07K2317/732C07K2317/734C07K2317/77C07K2317/92
    • The present invention provides chimeric and humanized versions of anti-CD22 mouse monoclonal antibody, HB22.7. The anti-CD22 antibodies of the invention comprise four human or humanized framework regions of the immunoglobulin heavy chain variable region ("VH") and four human or humanized framework regions of the immunoglobulin light chain variable region ("VK"). The invention further comprises heavy and/or light chain FW regions that contain one or more backmutations in which a human FW residue is exchanged for the corresponding residue present in the parental mouse heavy or light chain. Human or humanized VH framework regions of antibodies of the invention may comprise one or more of the following residues: a valine (V) at position 24 of framework region 1, a glycine (G) at position 49 of framework region 2, and an asparagine (N) at position 73 of framework region 3, numbered according to Kabat. The invention further relates to pharmaceutical compositions, immunotherapeutic compositions, and methods using therapeutic antibodies that bind to the human CD22 antigen and that preferably mediate human ADCC, CDC, and/or apoptosis for: the treatment of B cell diseases and disorders in human subjects, such as, but not limited to, B cell malignancies, for the treatment and prevention of autoimmune disease, and for the treatment and prevention of graft- versus-host disease (GVHD), humoral rejection, and post-transplantation lymphoproliferative disorder in human transplant recipients.
    • 本发明提供抗CD22小鼠单克隆抗体HB22.7的嵌合和人源化形式。 本发明的抗CD22抗体包含免疫球蛋白重链可变区(“VH”)和免疫球蛋白轻链可变区(“VK”)的四个人或人源化框架区的四个人或人源化框架区。 本发明还包含含有一个或多个反向突变的重链和/或轻链FW区,其中人FW残基被交换为亲本小鼠重链或轻链中存在的相应残基。 本发明抗体的人源化或人源化VH框架区可以包含一个或多个以下残基:构架区1的位置24的缬氨酸(V),构架区2的位置49处的甘氨酸(G)和天冬酰胺 (N)在框架区域3的位置73,根据Kabat编号。 本发明进一步涉及药物组合物,免疫治疗组合物和使用结合人CD22抗原并且优选介导人ADCC,CDC和/或细胞凋亡的治疗性抗体的方法:治疗人类受试者的B细胞疾病和病症, 例如但不限于B细胞恶性肿瘤,用于治疗和预防自身免疫性疾病,以及用于治疗和预防移植物抗宿主病(GVHD),体液排斥和移植后淋巴增生性疾病的人类移植 收件人。