EP0575583A1 - Complexes d'acides bicyclopolyazamacrocyclocarboxyliques, leurs conjugues, leurs procedes de preparation et leurs utilisations comme agents radiopharmaceutiques - Google Patents

Complexes d'acides bicyclopolyazamacrocyclocarboxyliques, leurs conjugues, leurs procedes de preparation et leurs utilisations comme agents radiopharmaceutiques

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Publication number
EP0575583A1
EP0575583A1 EP93901383A EP93901383A EP0575583A1 EP 0575583 A1 EP0575583 A1 EP 0575583A1 EP 93901383 A EP93901383 A EP 93901383A EP 93901383 A EP93901383 A EP 93901383A EP 0575583 A1 EP0575583 A1 EP 0575583A1
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EP
European Patent Office
Prior art keywords
conjugate
complex
alkyl
metal ion
antibody
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EP93901383A
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German (de)
English (en)
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EP0575583A4 (fr
Inventor
Garry E. Kiefer
Jaime Simon
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Dow Chemical Co
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Dow Chemical Co
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Publication of EP0575583A1 publication Critical patent/EP0575583A1/fr
Publication of EP0575583A4 publication Critical patent/EP0575583A4/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B59/00—Introduction of isotopes of elements into organic compounds ; Labelled organic compounds per se
    • C07B59/004—Acyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
    • A61K51/02—Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
    • A61K51/04—Organic compounds
    • A61K51/0474—Organic compounds complexes or complex-forming compounds, i.e. wherein a radioactive metal (e.g. 111In3+) is complexed or chelated by, e.g. a N2S2, N3S, NS3, N4 chelating group
    • A61K51/0482—Organic compounds complexes or complex-forming compounds, i.e. wherein a radioactive metal (e.g. 111In3+) is complexed or chelated by, e.g. a N2S2, N3S, NS3, N4 chelating group chelates from cyclic ligands, e.g. DOTA
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
    • A61K51/02—Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
    • A61K51/04—Organic compounds
    • A61K51/08—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins
    • A61K51/10—Antibodies or immunoglobulins; Fragments thereof, the carrier being an antibody, an immunoglobulin or a fragment thereof, e.g. a camelised human single domain antibody or the Fc fragment of an antibody
    • A61K51/1093—Antibodies or immunoglobulins; Fragments thereof, the carrier being an antibody, an immunoglobulin or a fragment thereof, e.g. a camelised human single domain antibody or the Fc fragment of an antibody conjugates with carriers being antibodies
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/08—Bridged systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/08—Bridged systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2121/00—Preparations for use in therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2123/00—Preparations for testing in vivo

Definitions

  • This invention concerns complexes that contain as the ligand bicyclopolyazamacrocyclocarboxylic acids complexed with metal ions, and comjugates thereof, for use as radiopharmaceuticals, especially for the treatment and/or diagnosis of cancer.
  • the processes for their preparation are also provided.
  • Metalic radionuclides offer a variety of nuclear properties and chemistries
  • 201 Tl, 67 Cu, 99m Tc, 90 Y and various isotopes of In and Ga are only a few examples of radioisotopes that have been used for disgnostic imaging and/or therpy.
  • the chemistry of 99m Tc has been explored the most for use as a radiopharmaceutical .
  • Tc-diphosphonates are used to image the skeletal system [see Subramanian et al., Radiology 149, 823-828 (1983)]. Loberg etal. [J. Nucl. Med.
  • radionuclides for treatment of cancer metastaticto the bone dates back to the early 1950's. It has been proposed to inject a radioactive particle-emitting nuclide in a suitable form for the treatment of calcific lesions. It is desirable that such nuclides be concentrated in the area of the bone lesion with minimal amounts reaching the softtissue and normal bone. Radioactive phosphorus (P-32 and P-33) compounds have been proposed, but the nuclear and biolocafization properties limit the use of these compounds. (E. Kaplan, etal., J. Nucl. Med 1(1), 1, (I960); U.S. Patent 3,965,254).
  • Stron t ⁇ um-89 has also been proposed for patients with metastatic bone lesions.
  • the long half-life (50.4days) high blood levels and low lesion to normal bone ratios limit the utility.
  • radionuclides for calific tumor therapy or relief of bone pain is discussed in published European patent application 176,288, where the use of Sm-153, Gd- 159, Ho-166, Lu-177 or Yb-175 complexed with a ligand such as ethylenediaminetetraacetic acid (EDTA) or hydroxyethylenediaminetriacetic acid (HEEDTA) is disclosed.
  • EDTA ethylenediaminetetraacetic acid
  • HEEDTA hydroxyethylenediaminetriacetic acid
  • a macrocyclic system having a 1,4,7,10-tetraazacyclododecane moiety complexed with Sm-153, Gd-159, Ho-166, Lu-177 or Yb-175 for calific tumor therapy or relief of bone pain is discussed in U.S. Patent 5,059,412 which complex is very stable and has a lower charge than the complex disclosed in published European patent application 176,288.
  • Radionudide complexes of such antibody/chelant conjugates are useful in diagnostic and/ortherapeutic applications as a means of conveying the radionuclidetoa cancer or tumor cell. See, for example, Meares et al., Anal. Biochem. 142, 68-78, (1984), and Krejcarek et al., Biochem. and Biophys. Res. Comm. 77, 581-585 (1977).
  • Aminocarboxylic acid chelating agents have been known and studied for many years. Typical of the aminocarboxylic acids are nitrilotriacetic acid (NTA), ethyl- enediaminetetraacetic acid (EDTA), hydroxyethylethylenediaminetriacetic acid (HEDTA), di- ethylenetriaminepentaacetic acid (DTPA), trans-1 ,2-diamino cyclohexanetetraacetic acid (CDTA) and 1, 4,7,10-tetraazacyclododecanetetraacetic acid (DOTA) Numerous bifunctional chelating agents based on aminocarboxylic acids have been proposed and prepared.
  • NTA nitrilotriacetic acid
  • EDTA ethyl- enediaminetetraacetic acid
  • HEDTA hydroxyethylethylenediaminetriacetic acid
  • DTPA di- ethylenetriaminepentaacetic acid
  • CDTA trans-1
  • U.S. Patents 4,432,907 and 4,352,751 disclose bifunctional chelating agents useful for binding metal ions to "organic species such as organic target molecules or antibodies.”
  • organic species such as organic target molecules or antibodies.
  • coupling is achieved via an amide group through the utilization of diaminotetraacetic acid dianhydrides.
  • anhydrides include dianhydrides of EDTA, CDTA, propylenediaminetetraacetic acid and phenylene 1 ,2-diaminetetraacetic acid.
  • a recent U S. Patent 4,647,447 discloses several complex salts formed from the anion of a complexing acid for use in various diagnostic techniques.
  • bifunctional chelating agents based on aminocarboxylic acid functionality is also well documented in the literature.
  • Sundberg, Meares, et al. in the J. Med. Chem. 17(12), 1304 (1974) disclosed bifunctional analogs of EDTA.
  • Representative of these compounds are 1-(p-aminophenyl)-ethylenediaminetetraaceticacid and 1-(p- benzenediazonium)ethylenediaminetetraaceticacid. Coupling to proteins through the para- subst ⁇ tuent and the binding of radioactive metal ions to the chelating group is discussed.
  • the compounds are also disclosed in Biochem. andBiophys. Res. Comm.75(1), 149 (1977), and in U.S.
  • Patents 3,994,966 and 4,043,998 It is important to note that the attachment of the aromatic group to the EDTAstructure is through a carbon of the ethylenediamine backbone.
  • Optically active bifunctional chelating agents based on EDTA, HEDTA and DTPA are disclosed in U.S.4,622,420. In these compounds an alkylene group links the aromatic group (which contains the functionality needed for attachment to the protein) to the carbon of the polyamine which contains the chelating functionality.
  • Other references to such compounds include Brechbiel etal., Inorg. Chem. 25, 2772-2781 (1986), U.S. Patent 4,647,447 and international Patent Publication No. WO 86/06384.
  • bifunctional chelating agents also worthy of note, consists of compounds wherein the chelating moiety, i.e. the aminocarboxylic acid, of the molecule is attached through a nitrogen to the functional group of the molecule containing the moiety capable of reacting with the protein.
  • Mikola et al. in patent application disclose a bifunctional chelating agent prepared by reacting p- nitrobenzyl bromide with DETA followed by reaction with bromoacetic acid to make the aminocarboxylic acid. The nitro groupis reduced to the corresponding amine group and is then converted to the isothiocyanate group by reaction with thiophosgene.
  • bifunctional chelating agents capable of chelating lanthanides which can be conjugated to bio-organic molecules for use as diagnostic agents. Since attachment of the linker portion of the molecule is through one of the nitrogens of the aminocarboxylic acid, then one potential aminocarboxyl group is lost for chelation. Thus, a DETA-based bifunctional chelant containing four (not five) acid groups is prepared. In this respect, this class of bifunctional chelant is similar to those where attachment to the protein is through an amide group with subsequent loss of a carboxyl chelating group.
  • Intrinsically Higher Tissue Uptake from lndium-11 1 Labeled Antibodies Co-administration of lndium-111 and lodine-125 Labeled B72.3 in a Nude Mouse Model" and "Influence of Chelator Denticity on the Biodistribution of lndium-1 1 1 Labeled B72.3 Immunoconjugates in Nude Mice".
  • the biodistribution of indium-111 complexed with an EDTA and DTPA bifunctional chelating agent is disclosed. Attachment of the aromatic ring to the EDTA/DTPA moieties is through an acetate methylene. Also at a recent meeting D.K. Johnson et al. [Florida Conf. on Chem.
  • the present invention provides a new type of a stable metal complex, especially with metals that are rare earths or pseudo-rare earths in their chemistry.
  • This invention teaches the use of these complexes and that the variance of their charge and lipophilic character may favorably alter their biodistribution when introduced into an animal.
  • the conjugates of these complexes with a biologically active material, such as an antibody, are also a part of this invention. These complexes and conjugates may be formulated with suitable pharmaceutical carriers and administered to a mammal for disgnosis and/or therapy.
  • the present invention is directed to novel complexes comprising a ligand that is a bicydopolyazamacrocyclocarboxylicacid of the formula
  • X and Y are independently H, OH, C 1 -C 3 alkyl or COOH;
  • R 7 is H or OH
  • R 4 is H, NO 2 , NH 2 , isothiocyanato, semicarbazido,thiosemicarbazido, maleimido,
  • A CH, N, C-Br, C-CI, C-OR 1 , C-OR 2 , N + -R 3 X-, or
  • R 1 H, C 1 -C 5 alkyl, benzyl, or benzyl substituted with at least one R 4 ;
  • R 2 is C 1 -C 16 alkylamino
  • R 3 is C 1 - C 16 alkyl, benzyl, or benzyl substituted with at least one R 4 ;
  • R 4 is defined as before
  • X is Cl -, Br-, l- or H 3 CCO 2 -;
  • Q and Z independently are CH, N, N + -R 3 X-, C-CH 2 -OR 1 or C-C(O)-R 5 ;
  • R 3 is defined as above;
  • R 5 is -O-(C 1 -C 3 alkyl), OH or NHR 6 ;
  • R 6 is C 1 - C 5 alkyl or a biologically active material
  • X ' is defined as above;
  • Bifunctional complexes of Formula (I) are desirable to prepare the conjugates of this invention.
  • Such ligands must have:
  • R 4 and R 7 are defined as above; or A is C-OR 1 , C-OR 2 , where R 1 and R 2 are defined as above or
  • R 4 is defined as above;
  • A is CH, and one of Q or Z is CH and the other is C-C(O)-R 5 or C-CH 2 - OR 1 , where R 1 and R 5 are defined as above;
  • the complexes of Formula (I) use various metal ions, usually in the +3 state, selected from: samarium ( 153 Sm), lutetium ( 177 Lu), holmium ( 166 Ho), yttrium ( 90 Y), scandium ( 47 Sc), rhenium ( 186 Re) or ( 188 Re), praseodymium ( 142 Pr),technetium ( 99m Tc), gallium ( 67 Ga) or ( 68 Ga), or indium ( 111 ln) or ( 115m In); with 153 Sm, 177 Lu, 159 Gd, 149 Pm, 140 La, 175 Yb, 166 Ho, 90 Y, 47 Sc, 142 Pr, 9 9m Tc, 67 Ga, 68 Ga, 11 1 ln, 113m ln or 115m ln being preferred; with 153 Sm, 177 Lu, 166 Ho, 90 Y, 99m Tc, 67 Ga, 68 Ga, 111 In, 113m
  • Complexes having gamma emissions are useful as diagnostic agents.
  • Complexes having particle emissions such as 149 Pm, 142 Pr, 90 Y, or 175 Yb, are useful as therapeutic agents.
  • Complexes having both gamma and particle emissions such as 153 Sm, 177 Lu, 159 Gd, 140 La, 166 Ho, 47 Sc, 186 Re, 188 Re, 105 Rh, or 115m ln, are useful as both diagnostic and therapeutic agents.
  • the complexes so formed can be used by themselves or can be attached, by being covalently bonded, to an antibody or fragment thereof and used for diagnostic or therapeutic purposes. Such conjugates and complexes are useful as diagnostic and/ortherapeutic agents.
  • the complexes and conjugates of this invention can be modified to provide a specific overall charge.
  • the metal ion is + 3 the following can be obtained:
  • one of A, Q or Z is N + -R 3 X-, where R 3 and X- are defined as above; and the three R terms are
  • Both the complexes and conjugates may be formulated to be in a pharmaceutically acceptable form for administration to an animal.
  • the complex has the ligand of Formula (I) numbered for nomenclature purposes as follows:
  • the present invention concerns development of radiopharmaceutical agents having synthetic modifications to the chelate enabling site specific delivery of the
  • the specificity of the complex of Formula (I) may be controlled by adjusting the total charge and lipophilic character ofthe complex.
  • the overall range of the charge of the complex is from -3 to + 1. For example, for a complex having 2 or more PO 3 H 2 groups, the overall charge is highly negative and bone uptake is expected; whereas when the overall charge of the complex is 0 (thus neutral), the com pi ex may have the ability to cross the blood brain barrier and normal brain uptake may be possible.
  • Tissue specificity may also be realized by ionic or covalent attachment of the chelate to a naturally occuring or synthetic molecule having specificity for a desired target tissue.
  • One possible application of this approach is through the use of chelate conjugated monoclonal antibodies which would transport the radioactive chelate to diseased tissue enabling diagnosis and therapy.
  • the present radiopharmaceutical agents of Formula (I) which are neutral in charge are particularly preferred for forming the conjugates of this invention since undersirable-ionic interactions between the chelate and protein are minimized which preserves the antibody immunoreactivity.
  • C 1 -C 3 alkyl include both straight and branched chain alkyl groups.
  • An "animal” includes a warmblooded mammal, preferably a human being.
  • Bioly active material refers to, for example, a dextran, peptide, or molecules that have specific affinity for a receptor, or preferably antibodies or antibody fragments.
  • Antibody refers to any polyclonal, monoclonal, chimeric antibody or heteroantibody, preferably a monoclonal antibody; "antibody fragment” includes Fab fragments and F(ab') 2 fragments, and any portion of an antibody having specificity toward a desired epitope orep ⁇ topes.
  • antibody fragment includes Fab fragments and F(ab') 2 fragments, and any portion of an antibody having specificity toward a desired epitope orep ⁇ topes.
  • Possible antibodies are 1116-NS-19-9 (anti-colorectal carcinoma), 1116-NS-3d (anti-CEA), 703D4 (anti-human lung cancer), 704A1 (anti-human lung cancer), CC49 (anti-TAG-72), CC83 (anti- TAG-72) and B72.3.
  • the hybr ⁇ doma cell lines 1116-NS-19-9, 1116-NS-3d, 703D4, 704A1, CC49, CC83 and B72.3 are deposited with the American Type Culture Collection, having the accession numbers ATCC HB 8059, ATCC CRL 8019, ATCC HB 8301 , ATCC HB 8302, ATCC HB 9459, ATCC HB 9453 and ATCC HB 8108, respectively.
  • complex refers to a complex ofthe compound ofthe invention, e.g. Formula (I), complexed with a metal ion, where at least one metal atom is chelated or sequestered;
  • conjuggate refers to a metal ion chelate that is covalently attached to an antibodyor antibody fragment.
  • bifunctional coordinator e.g., bifunctional chelating agent
  • functionalized chelant are used interchangeably and refer to com pounds that have a chelant moiety capable of chelating a metal ion and a moiety covalently bonded to the chelant moiety that is capable of serving as a means to covalently attach to an antibody or antibody fragment.
  • the bifunctional chelating agents described herein can be used to chelate or sequester the metal ions so as to form metal ion chelates (also referred to herein as "complexes").
  • the complexes because ofthe presence ofthe functionalizing moiety (represented by R 2 , R 4 or R 6 in Formula I), can be covalently attached to biologically active materials, such as dextran, molecules that have specific affinity for a receptor, or preferably covalently attached to antibodies or antibody fragments.
  • biologically active materials such as dextran, molecules that have specific affinity for a receptor, or preferably covalently attached to antibodies or antibody fragments.
  • conjugates are referred to herein as "conjugates”.
  • salts means any salt or mixtures of salts of a complex or conjugate of formula (I) which is sufficiently non-toxic to be useful in therapy or diagnosis of animals, preferrably mammals. Thus, the salts are useful in accordance with this invention.
  • salts formed by standard reactions from both organic and inorganic sources include, for example, sulfuric, hydrochloric, phosphoric, acetic, succinic, citric, lactic, maleic, fumaric, palmitic, cholic, pamoic, mucic, glutamic, gluconic, d- camphoric, glutaric, glycolic, phthalic, tartaric, formic, lauric, steric, salicylic, methanesulfonic, benzenesulfonic, sorbic, picric, benzoic and cinnamic acids and other suitable acids.
  • salts formed by standard reactions from both organic and inorganic sources such as ammonium, alkali metal ions, alkaline earth metal ions, and other similar ions.
  • Particularly preferred are the salts of the complexes or conjugates of formula (I) where the salt is potassium, sodium or ammonium.
  • mixtures of the above salts are also included.
  • the complexes or conjugates of the present invention contain a ligand of Formula (I).
  • the ligands are prepared by various processes. Typical general synthetic approaches to such processes are provided by the reaction schemes given below
  • R 4 NO 2 or NH 2 ;
  • R 4 NO 2 or NH 2 ;
  • the synthetic Scheme 1 begins with a haloge ⁇ ation of commercially available bis- pyridyl alcohol (1) using thionyl chloride. Similar procedures for converting an alcohol to an electrophilic substrate, such as treatment with toluenesulfonyl chloride, HBr or HCI, should also result in a similarily reactive product which would work well in subsequent ring closure reactions. Macrocyclization procedures are numerous in the literature and the desired tetraazamacrocycle (3) was prepared according to the method of Stetter et al., Tetrahedron 37, 767-772 (1981). More general procedures have since been published which give good yields of similar macrocycies using milder conditions [A. D. Sherry etal., J. Org. Chem.
  • Schemes 10 and 11 delinate a synthetic approach which introduces an aromatic nitrobenzyl substitutentatone ofthe macrocyclic nitrogen positions.
  • the macrocyclic amine is mono-N-functio ⁇ alized in an organic solvent such as aceto ⁇ itrile or DMF at room temperature using a non-nudeophiltc base such as potassium carbonate. Additional functionalizatron ofthe remaining nitrogen positions is then preformed by methods and conditions described in previous Schemes.
  • the ⁇ itro group isreduced using platinum oxide and hydrogen in water.
  • the chelating agent is compatible with conjugation techniques which will enable attachment to larger synthetic or natural molecules.
  • the metal ions used to form the complexes of this invention are 153 Sm, 177 Lu, 1 59 Gd, 149 Pm, 14 0 La, 175 Yb, 166 Ho, 90 Y, 47 Sc, 186 Re, 188 Re, 142 Pr, 99m Tc, 67 Ga, 68 Ga, 105 Rh, 97 Ru, 111 ln, 113m ln or 115m ln.
  • the anion present is halide, preferrably chloride, or salt free (metal oxide).
  • the complexes are prepared by methods well known in the art. Thus, for example, see Chelating Agents and Metal Chelates, Dwyer & Mellor, Academic Press (1964), Chapter 7. See also methods for making amino acids in Synthetic Production and Utilization of Ami no Acids, (edited byKameko,etaI.) John Wiley & Sons (1974).
  • An example ofthe preparation of a complex involves reacting a b ⁇ cyclopolyazamacrocyclocarboxylicacid with the metal ion under aqueous conditions at a pH from 5 to 7.
  • the complex formed is by a chemical bond and results in a stable radionudide composition, e.g. stable to the disassociation ofthe radionudide from the ligand.
  • the complexes ofthe present invention are administered at a ligand to metal molar ratio of at least about 1:1, preferably from 1 :1 to 3:1, more preferably from 1 : 1 to 1.5: 1.
  • a large excess of ligand is undesirable since uncomplexed ligand may be toxic to the animal or may result in cardiac arrest or hypocalcemic convulsions.
  • the antibodies or antibody fragments which may be used in the conjugates described herein can be prepared by techniques well known in the art. Highly specific monoclonal antibodies can be produced by hybridization techniques well known in the art, see for example, Kohler and Milstein [Nature, 256, 495-497 (1975); and fur. J. Immunol., 6, 51 1-519 (1976)]. Such antibodies normally have a highly specific reactivity. In the antibody targeted conjugates, antibodies directed against any desired antigen or hapten may be used. Preferably the antibodies which are used in the conjugates are monoclonal antibodies, or fragments thereof having high specificity for a desired epitope(s).
  • Antibodies used in the present invention may be directed against, for example, tumors, bacteria, fungi, viruses, parasites, mycoplasma, differentiation and other cell membrane antigens, pathogen surface antigens, toxins, enzymes, allergens, drugs and any biologically active molecules.
  • Some examples of antibodies or antibody fragraments are 1116-NS-19-9, 11 16-NS-3d, 703D4, 704A1 , CC49, CC83 and B72.3. All of these antibodies have been deposited in ATCC. A more complete list of antigens can be found in U.S. Patent 4, 193,983.
  • the conjugates of the present invention are particularly preferred for the diagnosis of various cancers.
  • This invention is used with a physiologically acceptable carrier, excipient or vehicle therefor.
  • a physiologically acceptable carrier excipient or vehicle therefor.
  • the methods for preparing such formulations are well known.
  • the formulations may be in the form of a suspension, injectable solution or other suitable formulations.
  • Physiologically acceptable suspending media, with or without adjuvants, may be used.
  • an "effective amount" ofthe formulation is used for diagnosis.
  • the dose will vary depending on the disease and physical parameters ofthe animal, such as weight.
  • In vivo diagnostics are also contemplated using formulations of this invention.

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  • Proteomics, Peptides & Aminoacids (AREA)
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  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
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Abstract

Complexes de composés d'acides bicyclopolyazamacrocyclocarboxyliques présentant un ion métal, par exemple un ion 153Sm, 177Lu, 159Gd, 149Pm, 140La, 175Yb, 166Ho, 90Y, 47Sc, 186Re, 188Re, 142Pr, 99mTc, 67Ga, 68Ga, 105Rh, 97Ru, 111In, 113mIn ou 115mIn. Les complexes peuvent être fixés de manière covalente à une molécule bioactive, par exemple un anticorps ou un fragment d'anticorps, pour former des conjugués. Les complexes et conjugués sont utiles en tant qu'agents radiopharmaceutiques à des fins de thérapie et/ou de diagnostic. L'invention concerne également des procédés de préparation du complexe et du conjugué.
EP93901383A 1991-12-10 1993-07-05 Complexes d'acides bicyclopolyazamacrocyclocarboxyliques, leurs conjugues, leurs procedes de preparation et leurs utilisations comme agents radiopharmaceutiques. Withdrawn EP0575583A4 (fr)

Applications Claiming Priority (2)

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US80539291A 1991-12-10 1991-12-10
US805392 1991-12-10

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EP0575583A1 true EP0575583A1 (fr) 1993-12-29
EP0575583A4 EP0575583A4 (fr) 1995-02-15

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EP (1) EP0575583A4 (fr)
KR (1) KR930703331A (fr)
AU (1) AU3275293A (fr)
CA (1) CA2103553A1 (fr)
FI (1) FI933508A (fr)
HU (1) HU9302308D0 (fr)
IL (1) IL104062A0 (fr)
MX (1) MX9207165A (fr)
WO (1) WO1993012112A1 (fr)
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US5385893A (en) * 1993-05-06 1995-01-31 The Dow Chemical Company Tricyclopolyazamacrocyclophosphonic acids, complexes and derivatives thereof, for use as contrast agents
PL2288715T3 (pl) 2008-04-11 2015-03-31 Merrimack Pharmaceuticals Inc Łączniki będące albuminą surowicy ludzkiej i ich koniugaty
RU2505499C1 (ru) * 2012-10-08 2014-01-27 Юлия Алексеевна Щепочкина Сырьевая смесь для имитации природного камня

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DE4001655A1 (de) * 1990-01-18 1991-07-25 Schering Ag 6-ring enthaltende makrocyclische tetraaza-verbindungen, verfahren zu ihrer herstellung und diese enthaltende pharmazeutische mittel
DE3825040A1 (de) * 1988-07-20 1990-01-25 Schering Ag 5- oder 6-ring- enthaltende makrocyclische polyaza-verbindungen, verfahren zu ihrer herstellung und diese enthaltende pharmazeutische mittel
US4940796A (en) * 1989-03-17 1990-07-10 The University Of Southern Mississippi 2,6-substituted-4-aminopyridines and their corresponding intermediates
FR2644785B1 (fr) * 1989-03-24 1991-07-05 Guerbet Sa Nouveaux ligands macrocycliques azotes, procede de preparation, complexes metalliques formes par ces ligands et composition de diagnostic les contenant

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See also references of WO9312112A1 *

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CA2103553A1 (fr) 1993-06-11
WO1993012112A1 (fr) 1993-06-24
HU9302308D0 (en) 1993-12-28
FI933508A (fi) 1993-08-31
AU3275293A (en) 1993-07-19
KR930703331A (ko) 1993-11-29
FI933508A0 (fi) 1993-08-09
EP0575583A4 (fr) 1995-02-15
IL104062A0 (en) 1993-05-13
MX9207165A (es) 1993-06-01
ZA929578B (en) 1994-06-10

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