Abstract:
This invention relates to certain spirocyclic compounds substituted with both basic and acidic functionality, which are useful in inhibition of platelet aggregation.
Abstract:
Novel compounds, their salts and compositions related thereto having activity against mammalian factor Xa are disclosed. The compounds are useful in vitro or in vivo for preventing or treating coagulation disorders.
Abstract:
Novel compounds, their salts and compositions related thereto having activity against mammalian factor Xa are disclosed. The compounds are useful in vitro or in vivo for preventing or treating coagulation disorders.
Abstract:
Peptide derivatives serving as thrombin receptor antagonists are disclosed, which bear specificity for the cellular thrombin receptor without interfering with the catalytic activities of thrombin. The derivatives generally have formula (I) in which R1 and R3 are amide linkages, N-alkylamide linkages, or isosteric replacements of such linkages; R2 is either a neutral amino acid side chain or a hydrophobic radical; R4 is hydrophobic radical; R5 is CO, CH2 or SO; X is either of formula (II) in which R6 and R7 are H, alkyl, cycloalkylalkyl, alkoxyalkyl, alkylthioalkyl or arylalkyl, and R8 is a hydrophobic radical, or a hydrophobic residue; Y is alkoxy, hydroxy, amino, alkylamino, dialkylamino, in which any of the alkyl groups may be substituted with a basic moiety; Z is an amino acid or peptide residue; and m is zero or one.
Abstract:
Novel compounds, their salts and compositions related thereto having activity against mammalian integrins are disclosed. The compounds are useful in vitro or in vivo for preventing or treating thrombotic or restenotic disorders.
Abstract:
The present invention discloses that phosphorylation of cytoplasmic tyrosine residues in the beta -subunit of integrins is needed for signal protein association. The invention provides methods of identifying signaling partners involved in integrin mediated signaling, methods of identifying agents which block integrin mediated signaling, methods of using agents which block intergrin mediated signaling to modulate biological and pathological processes, and agents which block integrin mediated signaling.
Abstract:
The present invention is directed towards immunoglobulin polypeptides that specifically bind to the extracellular domain of the human type beta PDGF receptor. The binding of the immunoglobulin polypeptides to the receptor inhibits PDGF-induced (or stimulated) receptor activation as indicated by inhibition of receptor phosphorylation and dimerisation, and by inhibition of PDGF-mediated mitogenesis, chemotaxis and migration of cells displaying the human PDGF type beta receptor on the cell surface. Nucleic acids encoding the immunoglobulin polypeptides are also included in the invention. The immunoglobulin polypeptides have diagnostic and therapeutic uses.
Abstract:
Analogs of Factor Xa (Factor Xai) which are inactive as proteases in the prothrombinase reaction are useful in treatment of diseases characterized by thrombosis. These antithrombotic agents can be conveniently prepared using recombinant techniques. In addition, modified forms of Factor Xa that generate Factor Xa in serum but have extended half-lives are useful in treating hemophilic conditions. These modified forms of Factor Xa are typically acylated forms of the serine residue in the active site which are slowly deacylated in vivo.
Abstract:
The present invention provides the amino acid and nucleotide sequence of a protein that binds to beta 3 integrins, alpha IIb and Src kinase and is involved in integrin mediated signaling. Based on this disclosure, the present invention provides methods for identifying agents that block integrin mediated signaling, methods of using agents that block integrin mediated signaling to modulate biological and pathological processes, and agents that block integrin mediated signaling.
Abstract:
Novel purinergic receptors are provided, having research, diagnostic and therapeutic applications. Also provided are nucleic acids encoding these receptors, as well as expression systems for their production.