摘要:
The process according to the present invention allows expression and isolation of polypeptides with the proteolytic activity of HCV NS3 protease in a pure, catalytically active form, and in amounts that are sufficient for discovery of NS3 protease inhibitors and for determination of the three-dimensional structure of the NS3 protease. A further subject of the present invention is a procedure that defines the chemical and physical conditions necessary for completion of the proteolytic activity of the above polypeptides. The invention further comprises new compositions of matter (expression vectors) containing nucleotide sequences capable of expressing the above mentioned polypeptides in culture cells. Finally, new compounds of matter are defined, suitable to measure the above proteolytic activity, and useful to develop NS3 protease inhibitors and therefore therapeutic agents for use against HCV. The figure shows the kinetic parameters of HCV NS3 protease using the S3 depsipeptide substrate (SEQ ID NO:45).
摘要:
Peptide analogs of oxyntomodulin (OXM, glucagon-37), which have been modified to be resistant to cleavage and inactivation by dipeptidyl peptidase IV (DPP-IV) and to increase in vivo half-life of the peptide analog while enabling the peptide analog to act as a dual GLP-1/glucagon receptor (GCGR) agonistm are described. The peptide analogs are useful for treatment of metabolic disorders such as diabetes and obesity.
摘要:
Polypeptide useful for the preparation of antimalarial vaccines and of diagnostic kits for the detection of antisporozoite antibodies in clinical samples of malariated persons, constituted by: a synthetic peptide, which repeates the region I of P. falciparum and by a variable number of repetitive tetrapeptide units of CS protein of P. falciparum linked to each other by an amidic bond between the tail proline of I region and the head asparagine of the first tetrapeptide.
摘要:
An immunoenzymatic method for the detection of anti-Plasmodium falciparum-sporozoite antibodies in a sample of human blood, which operates, in homogeneous phase, and under suitable conditions, with a synthetic polypeptidic antigen (P), a synthetic antigen-enzyme (P-E) conjugate, wherein said antigen is capable of specifically reacting with the anti-Plasmodium falciparum-sporozoite antibodies (Ab) possibly present in the sample, and an inert substance capable of quantitatively precipitating the antibody-synthetic antigen-enzyme complex (Ab-P-E).The method, due to its specificity, sensitivity, reproducibility and rapidity, is particularly useful in the epidemiological investigations into malaria and in the evaluation of the efficacy of an antimalarial vaccine.
摘要:
Synthetic peptides constituted by at least two repeating, consecutive units of asparaginyl-proline (Asn-Pro).sub.n sequence, are described.The peptides are powerful immunogens, capable of inducing in laboratory animals the formation of a high concentration of antibodies capable of reacting both with the (Asn-Pro).sub.n peptides, and with the immunodominant epitope of the circumsporozoite protein of Plasmodium falciparum.The peptides, which can be obtained in a pure form by chemical synthesis, are particularly useful for preparing antimalarial vaccines and diagnostic kits for the determination of malaria in man.
摘要:
Pharmacologically active, partially retro-inverso, neurotensin-like peptides lasting longer than the natural hormone, corresponding to the formula ##STR1## wherein R.sup.1 and R.sup.2 are straight or branched (C.sub.1 -C.sub.7) alkyl radicals.The new compounds are useful as vasodilating and hypotensive agents.
摘要:
New partially retro-inverted tuftsin analogues of general formula I ##STR1## wherein R represents the side-chain of the amino acids threonine, methionine or leucineR.sup.1 represents the side-chain of the amino acids lysine or arginineR.sup.2 is hydrogen or a metabolically labile acyl group,all the asymmetric carbon atoms are either of the S- or R-configuration, or, alternatively, the first, third, and fourth asymmetric carbons, starting from the N-terminal residue, are of the S-configuration while the second one is of the R- or (R,S)-configuration, and the corresponding pharmacologically acceptable salts, esters and amides. The new compounds which share the same pharmacological properties of tuftsin, are much more stable toward the enzymatic degradation than the parent molecule.
摘要:
A first composition comprising a ligand part being able to specifically bind to a target, the target being on a diseased cell of an organism, and an epitope part having a non-self epitope, or encoding a non-self epitope, the non-self epitope not naturally being encoded by the organism, wherein the target is internalized after forming a complex with the composition and the non-self epitope is presented on the cell surface of said diseased cell of an organism after internalization.
摘要:
Synthetic polypeptides constituted by at least two consecutive repeating units of (Asn-Asn-Pro) sequence are powerful immunogens in test animals.The formed antibodies recognize both the synthetic polypeptides and the immuno-dominant epitope of the circumsporozoitic protein of Plasmodium falciparum.Said polypeptides, which can be obtained in pure form, are particularly useful for the preparation of antimalarial vaccines and of diagnostic kits for the determination of malarial affections.
摘要:
An immunoenzimatic method is disclosed for the detection and the measurement of anti-P. falciparum sporzoite antibodies in human blood and/or in its derivatives, which operates with a synthetic antigen-enzyme conjugate capable of forming with the antisporozoite antibodies a stable antibody-synthetic antigen-enzyme complex, and one or more proteins absorbed and/or covalently linked to a solid support, which eagerly bind the antisporozoite antibody of said complex.The method, thanks to its simpleness, specificity and rapidity, is particularly useful in epidemiologic investigations into malaria and into the efficacy of an antimalarial vaccine.