Methods and compositions for radiohalogen protein labeling
申请人:Genentech, Inc.
公开号:US09393327B2
公开(公告)日:2016-07-19
Methods and compositions are provided for labeling proteins with radiohalogen-label reagents. Radiohalogen-labeled proteins may be used for imaging studies, as therapeutics and in diagnostic tests. The [125I] HIP-DOTA label reagent 6 is prepared by an efficient and convenient process.
[EN] METHODS AND COMPOSITIONS FOR RADIOHALOGEN PROTEIN LABELING<br/>[FR] PROCÉDÉS ET COMPOSITIONS POUR LE MARQUAGE DE PROTÉINE PAR UN RADIOHALOGÈNE
申请人:GENENTECH INC
公开号:WO2014100095A1
公开(公告)日:2014-06-26
Methods and compositions are provided for labeling proteins with radiohalogen-label reagents. Radiohalogen-labeled proteins may be used for imaging studies, as therapeutics and in diagnostic tests. The [125I] HIP-DOTA label reagent 6 is prepared by an efficient and convenient process.
Enhanced Tumor Retention of a Radiohalogen Label for Site-Specific Modification of Antibodies
作者:C. Andrew Boswell、Jan Marik、Michael J. Elowson、Noe A. Reyes、Sheila Ulufatu、Daniela Bumbaca、Victor Yip、Eduardo E. Mundo、Nicholas Majidy、Marjie Van Hoy、Saritha N. Goriparthi、Anthony Trias、Herman S. Gill、Simon P. Williams、Jagath R. Junutula、Paul J. Fielder、Leslie A. Khawli
DOI:10.1021/jm401365h
日期:2013.12.12
A known limitation of iodine radionuclides for labeling and biological tracking of receptor targeted proteins is the tendency of iodotyrosine to rapidly diffuse from cells following endocytosis and lysosomal degradation. In contrast, radiometal-chelate complexes such as indium-111-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (In-111-DOTA) accumulate within target cells due to the residualizing properties of the polar, charged metal-chelate-amino acid adduct. Iodine radionuclides boast a diversity of nuclear properties and chemical means for incorporation, prompting efforts to covalently link radioiodine with residualizing molecules. Herein, we describe the Ugi-assisted synthesis of [I-125]HIP-DOTA, a 4-hydroxy-3-iodophenyl (HIP) derivative of DOTA, and demonstration of its residualizing properties in a murine xenograft model. Overall, this study displays the power of multicomponent synthesis to yield a versatile radioactive probe for antibodies across multiple therapeutic areas with potential applications in both preclinical biodistribution studies and clinical radioimmunotherapies.