申请人:Webb J. Iain
公开号:US20060062793A1
公开(公告)日:2006-03-23
Modified antibodies, or antigen-binding fragments thereof, to the extracellular domain of human prostate specific membrane antigen (PSMA) are provided. The modified anti-PSMA antibodies, or antigen-binding fragments thereof, have been rendered less immunogenic compared to their unmodified counterparts to a given species, e.g., a human. Pharmaceutical compositions including the aforesaid antibodies, nucleic acids, recombinant expression vectors and host cells for making such antibodies and fragments are also disclosed. Methods of using the antibodies of the invention to detect human PSMA, or to ablate or kill a PSMA-expressing cell, e.g., a PSMA-expressing cancer or prostatic cell, either in vitro or in vivo, are also provided.
本发明提供了针对人类前列腺特异性膜抗原(PSMA)的细胞外区域的改性抗体或其抗原结合片段。与其未改性的同类比较,这些改性的抗PSMA抗体或其抗原结合片段已经被降低了对某个物种(例如人类)的免疫原性。本发明还公开了包括上述抗体、核酸、重组表达载体和宿主细胞的制药组合物,用于制备这种抗体和片段。本发明还提供了使用这种抗体来检测人类PSMA或消融或杀死表达PSMA细胞(例如表达PSMA的癌细胞或前列腺细胞)的方法,无论是在体内还是在体外。