Abstract:
The present invention relates to a bi-specific antibody or antibody fragment having at least one arm that is reactive against a targeted tissue and at least one other arm that is reactive against a targetable conjugate. The targetable conjugate encompasses a hapten to which antibodies have been prepared. In preferred embodiments, the hapten is histamine-succinyl-glycine (HSG). In more preferred embodiments, the at least one arm comprises the CDR sequences of the HSG-binding 679 antibody. The targetable conjugate is attached to one or more therapeutic and/or diagnostic agents. The invention provides constructs and methods for producing the bispecific antibodies or antibody fragments, as well as methods for using them and kits comprising them.
Abstract:
This invention concerns multiple release spacers and spacer systems, which release multiple leaving groups following a single activation. It concerns compounds comprising a specifier linked to two or more of the same or different leaving groups (L in the figure) via a self-eliminating multiple release spacer or spacer system, which compounds upon a single activation step, in particular removal or transformation of the specifier, release at least two leaving groups.
Abstract:
The present invention relates to a bi-specific antibody or antibody fragment having at least one arm that is reactive against a targeted tissue and at least one other arm that is reactive against a linker moiety. The linker moiety encompasses a hapten to which antibodies have been prepared. In preferred embodiments, the hapten is histamine-succinyl-glycine (HSG). In more preferred embodiments, the at least one arm comprises the CDR sequences of the HSG-binding 679 antibody. The antigenic linker is conjugated to one or more therapeutic or diagnostic agents or enzymes. In one embodiment, the invention provides constructs and methods for producing the bispecific antibodies or antibody fragments, as well as methods for using them.
Abstract:
The invention provides methods for enhancing efficiency of prodrugs by specifically engineered enzymes with enhanced activity towards nucleoside analogs used in cancer chemotherapy, and delivering the enzymes to specific target cells in a patient. The invention also provides modified deoxycytidine kinase (dCK) mutants with such enhanced activity. Furthermore, the invention provides antibody-conjugated enzymes that can be specifically delivered to leukemic blast cells in vivo or ex vivo.
Abstract:
The present invention provides conjugates formed between toxins and sugars and toxins and peptides, such as antibodies. In an exemplary embodiment, a toxin-sugar construct is conjugated to an antibody through an intact glycosyl linking group.
Abstract:
This invention concerns multiple release spacers and spacer systems, which release multiple leaving groups following a single activation. It concerns compounds comprising a specifier linked to two or more of the same or different leaving groups (L in the figure) via a self-eliminating multiple release spacer or spacer system, which compounds upon a single activation step, in particular removal or transformation of the specifier, release at least two leaving groups.
Abstract:
This invention pertains to nitrogen mustard compounds (Formula (II)) and prodrugs therefor (Formula (I)), methods for their preparation, pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, in therapy and treatment, for example, of cancer, wherein: R1 and R2 are independently —Cl, —Br, —I, —OSO2CH3, or —OSO2Ph; R1a, R2a, R1b, and R2b are independently —H, a C1-4alkyl group, or a C1-4haloalkyl group; R3 is —F, —Cl, —Br, —I, —OCHF2, —C≡CH, —OCF3, —CH3, —CF3, —SF5, —SCF3, or —CF2CF3; R4 is —H or as defined for R3−, R5 is —H or —F; R7 is —H, —C(CH3)3, or —CH2—CH—CH2; Z is —CH2—T—W; T is —CH2—, —O—, —S—, —(S═O)—, or —(SO2)—; W is one of: (1) —COOH; (2)—(C═O)OR8; (3) —(C═O)NR9R9; (4) —SO2NHR10−, (5) SO2OR11; (6)—PO3R11R11; (7) a tetrazol-5-yl group; (8) —CONH—SO2R12; and, (9)-M-Het.
Abstract translation:本发明涉及氮芥化合物(式(II))及其前药(式(I)),其制备方法,包含这些化合物的药物组合物,以及这些化合物和组合物在体外和体内的用途, 在治疗和治疗中,例如癌症,其中:R 1和R 2独立地是-Cl,-Br,-I,-OSO 2 CH 3或-OSO 2 Ph; R 1a,R 2a,R 1b和R 2b独立地是-H,C 1-4烷基或C 1-4卤代烷基; R 3是-F,-Cl,-Br,-I,-OCHF 2,-C = CH,-OCF 3,-CH 3,-CF 3,-SF 5,-SCF 3或-CF 2 CF 3; R 4是-H或如对R 3-3所定义,R 5是-H或-F; R 7是-H,-C(CH 3)3或-CH 2 -CH-CH 2; Z是-CH 2 -T-W; T是-CH 2 - , - O - , - S - , - (S = O) - 或 - (SO 2) - ; W是以下之一:(1)-COOH; (2) - (C = O)OR 8; (3) - (C = O)NR 9 R 9; (4)-SO 2 NHR 10,(5)SO 2 OR 11; (6)-PO 3 R 11 R 11; (7)四唑-5-基; (8)-CONH-SO 2 R 12; 和(9)-M-Het。
Abstract:
The invention relates to a method for treating target cells, tissues or pathogens in a subject, comprising administering a non-covalently bound complex which comprises a multispecific targeting protein and a hapten-enzyme covalent conjugate. The invention further relates to kits comprising the non-covalently bound complex or the components to prepare the complex.
Abstract:
The present invention is directed to the use of antibodies or binding portions thereof, probes, ligands, or other biological agents which either recognize an extracellular domain of prostate specific membrane antigen or bind to and are internalized with prostate specific membrane antigen. These biological agents can be labeled and used for detection of cancerous tissues, particularly cancerous tissues proximate to or containing vascular endothelial cells, which express an extracellular domain of prostate specific membrane antigen. The labeled biological agents can also be used to detect normal, benign hyperplastic, and cancerous prostate epithelial cells or portions thereof. They also can be used alone or bound to a substance effective to ablate or kill such cells as a therapy for prostate or other cancers. Also disclosed are four hybridoma cell lines, each of which produces a monoclonal antibody recognizing extracellular domains of prostate specific membrane antigens of normal, benign hyperplastic, and cancerous prostate epithelial cells or portions thereof.