Abstract: The present invention relates to the inhibition of stress-induced receptor tyrosine kinase activity by inhibiting a ligand of said receptor tyrosine kinase, particularly an extracellular ligand.

Abstract: A novel receptor-type protein tyrosine phosphatase-? (RPTP?) protein or glycoprotein and the DNA coding therefor is expressed in a wide variety of mammalian tissues. The RPTP? protein or glycoprotein may be produced by recombinant means. Antibodies to the protein, methods for measuring the quantity of the protein, methods for screening compounds, such as drugs, which can bind to the protein and inhibit or stimulate their enzymatic activity, are provided. Further, methods for inhibiting homophilic binding of Type II RPTP, especially RPTP? molecules are provided.

Abstract: The present invention relates to MDK1 polypeptides, nucleic acids encoding such polypeptides, cells, tissues and animals containing such nucleic acids, antibodies to such polypeptides, assays utilizing such polypeptides, and methods relating to all of the foregoing. Methods for treatment, diagnosis, and screening are provided for diseases or conditions characterized by an abnormality in a signal transduction disorder. The signal transduction pathway involves an interaction between a MDK1 receptor tyrosine kinase and a receptor for the kinase. The MDK1 receptor tyrosine kinase may be truncated and lack a kinase domain and may be selected from the group consisting of MDK1.T1, MDK1.T2, MDK1.?1 and MDK1.?2.

Abstract: The present invention relates to novel cytoplasmic tyrosine kinases isolated from megakaryoctyes (megakaryocyte kinases or MKKs) which are involved in cellular signal transduction pathways and to the use of these novel proteins in the diagnosis and treatment of disease. The present invention further relates to specific megakaryocyte kinases, designated MKK1, MKK2, and MKK3, and their use as diagnostic and therapeutic agents.

Abstract: The present invention relates to MDK1 polypeptides, nucleic acids encoding such polypeptides, cells, tissues and animals containing such nucleic acids, antibodies to such polypeptides, assays utilizing such polypeptides, and methods relating to all of the foregoing. Methods for treatment, diagnosis, and screening are provided for diseases or conditions characterized by an abnormality in a signal transduction disorder. The signal transduction pathway involves an interaction between a MDK1 receptor tyrosine kinase and a receptor for the kinase. The MDK1 receptor tyrosine kinase may be truncated and lack a kinase domain and may be selected from the group consisting of MDK1.T1, MDK1.T2, MDK1.?1 and MDK1.?2.

Abstract: The present invention relates to diagnostic and therapeutic methods in the field of malignant disorders. Most particularly, the invention provides methods of determining the invasivity of malignant disorders and methods for reducing the invasivity of malignant disorders including the prevention or treatment of cancer cell invasion.

Abstract: The present invention relates to the use of a compound which is capable of inhibiting activation of a growth factor receptor of the EGFR-family for the prevention or treatment of processes associated with increased G-protein mediated signal transduction.

Abstract: The present invention relates to the use of Fibroblast-Growth Factor Receptor (FGFR) agonists for the diagnosis, prevention and/or treatment of pathological conditions including, but not limited to hyperproliferative disorders, bone diseases and vascular diseases. Particularly, the use of FGFR-4 agonists, e.g. anti-FGFR-4 antibodies is described. Further, the invention relates to a pharmaceutical composition comprising the agonist as described above and a screening procedure.

Abstract: Monoclonal antibodies which bind specifically to the extracellular domain of the SIRP cell surface glycoproteins, and which, in some cases, block the interaction of SIRP with the surface molecule CD47, are described.

Abstract: The present invention relates to novel cytoplasmic tyrosine kinases isolated from megakaryocytes (megakaryocyte kinases or MKKs) which are involved in cellular signal transduction pathways and to the use of these novel proteins in the diagnosis and treatment of disease. The present invention further relates to specific megakaryocyte kinases, designated MKK1, MKK2, and MKK3, and their use as diagnostic and therapeutic agents.

Abstract: The present invention relates to the novel family of receptor tyrosine kinases, herein referred to as MCK-10, to nucleotide sequences and expression vectors encoding MCK-10, and to methods of inhibiting MCK-10 activity. The invention relates to differentially spliced isoforms of MCK-10 and to other members of the MCK-10 receptor tyrosine kinase family. Genetically engineered host cells that express MCK-10 may be used to evaluate and screen drugs involved in MCK-10 activation and regulation. The invention relates to the use of such drugs, in the treatment of disorders, including cancer, by modulating the activity of MCK-10.

Abstract: The present invention relates to the use of ligands for the FLK-1 receptor for the modulation of angiogenesis and vasculogenesis. The invention is based, in part, on the demonstration that Flk-1 tyrosine kinase receptor expression is associated with endothelial cells and the identification of vascular endothelial growth factor (VEGF) as the high affinity ligand of Flk-1. These results indicate a major role for Flk-1 in the signaling system during vasculogenesis and angiogenesis. Engineering of host cells that express Flk-1 and the uses of expressed Flk-1 to evaluate and screen for drugs and analogs of VEGF involved in Flk-1 modulation by either agonist or antagonist activities is described. The invention also relates to the use of FLK-1 ligands, including VEGF agonists and antagonists, in the treatment of disorders, including cancer, by modulating vasculogenesis and angiogenesis.

Abstract: The present invention relates to the use of ligands for the FLK-1 receptor for the modulation of angiogenesis and vasculogenesis. The invention is based, in part, on the demonstration that Flk-1 tyrosine kinase receptor expression is associated with endothelial cells and the identification of vascular endothelial growth factor (VEGF) as the high affinity ligand of Flk-1. These results indicate a major role for Flk-1 in the signaling system during vasculogenesis and angiogenesis. Engineering of host cells that express Flk-1 and truncated Flk-1 and the uses of expressed Flk-1 to evaluate and screen for drugs and analogs of VEGF involved in Flk-1 modulation by either agonist or antagonist activities is described. The invention also relates to the use of FLK-1 ligands, including VEGF agonists and antagonists, in the treatment of disorders, including cancer, by modulating vasculogenesis and angiogenesis.

Abstract: The present invention relates to nucleic acid molecules encoding mCLK2, mCLK3, and mCLK4 polypeptides, nucleic acid molecules-encoding portions of their amino acid sequences, nucleic acid vectors harboring such nucleic acid molecules, cells containing such nucleic acid vectors, purified polypeptides encoded by such nucleic acid molecules, and antibodies to such polypeptides. Also included are assays that contain at least one CLK protein kinase related molecule. Diagnosis and treatment of an abnormal condition related to RNA splicing or cell proliferation in an organism by using a CLK protein kinase related molecule or compound are disclosed. A method of using a CLK protein kinase related molecule or compound as a contraceptive to reproduction in male organisms is also disclosed.

Abstract: The present invention concerns the use of inhibitors for the treatment and/or prophylaxis of diseases which are the consequence of increased receptor tyrosine kinase activity, particularly cancer. The use is particularly directed towards inhibition or lowering of the overexpression and/or altered activity of receptor tyrosine kinases (RTKs). In particular, this altered activity of receptor tyrosine kinase can be triggered by a mutation of FGFR-4, wherein this mutation is in particular a point mutation in the transmembrane domain of FGFR-4 and leads to an exchange of a hydrophobic amino acid for a hydrophilic amino acid. The invention further concerns the use of an inhibitor directed against FGFR-4, for the treatment and/or prophylaxis of cancer. Furthermore, the invention concerns a mutated FGFR-4, which leads to overexpression and/or altered activity in cells. Finally, the invention concerns a DNA and RNA sequence of a mutated FGFR-4 molecule.

Abstract: The present invention relates to a pharmaceutical composition comprising as an active agent an inhibitor of HER3 activity, particularly an anti-HER-antibody. Further, the use of this composition for the diagnosis, prevention or treatment of hyperproliferative diseases, particularly tumor diseases is disclosed.

Abstract: The present invention relates to nucleic acid molecules encoding mCLK2, mCLK3, and mCLK4 polypeptides, nucleic acid molecules-encoding portions of their amino acid sequences, nucleic acid vectors harboring such nucleic acid molecules, cells containing such nucleic acid vectors, purified polypeptides encoded by such nucleic acid molecules, and antibodies to such polypeptides. Also included are assays that contain at least one CLK protein kinase related molecule. Diagnosis and treatment of an abnormal condition related to RNA splicing or cell proliferation in an organism by using a CLK protein kinase related molecule or compound are disclosed. A method of using a CLK protein kinase related molecule or compound as a contraceptive to reproduction in male organisms is also disclosed.

Abstract: The present invention relates to a novel polypeptide, PTP20, and to nucleic acid molecules encoding the polypeptide. The invention also relates to nucleic acid molecules encoding portions of the phosphatase, nucleic acid vectors containing PTP20 related nucleic acid molecules, recombinant cells containing such nucleic acid vectors, polypeptides purified from such recombinant cells, antibodies to such polypeptides, and methods of identifying compounds that bind PTP20 or abrogate its interactions with natural binding partners. Also disclosed are methods for diagnosing abnormal conditions in an organism with PTP20 related molecules or compounds.

Abstract: The present invention relates to the use a pyruvate-kinase or a nucleic acid coding therefor as a target for the modulation of apoptotic processes, particularly as a target molecule for the diagnosis, prevention or treatment of apoptosis-associated disorders, such as tumours

Abstract: The present invention concerns the use of inhibitors for the treatment and/or prophylaxis of diseases which are the consequence of increased receptor tyrosine kinase activity, particularly cancer. The use is particularly directed towards inhibition or lowering of the overexpression and/or altered activity of receptor tyrosine kinases (RTKs). In particular, this altered activity of receptor tyrosine kinase can be triggered by a mutation of FGFR-4, wherein this mutation is in particular a point mutation in the transmembrane domain of FGFR-4 and leads to an exchange of a hydrophobic amino acid for a hydrophilic amino acid. The invention further concerns the use of an inhibitor directed against FGFR-4, for the treatment and/or prophylaxis of cancer. Furthermore, the invention concerns a mutated FGFR-4, which leads to overexpression and/or altered activity in cells. Finally, the invention concerns a DNA and RNA sequence of a mutated FGFR-4 molecule.