40results about "Neurotensin" patented technology

The present invention features a compound having the formula A-X—B, where A is peptide vector capable of enhancing transport of the compound across the blood-brain barrier or into particular cell types, X is a linker, and B is a peptide therapeutic selected from the group consisting of neurotensin, a neurotensin analog, or a neurotensin receptor agonist. The compounds of the invention can be used to treat any disease in which increased neurotensin activity is useful and can be used to induce hypothermia or analgesia.

The present invention is directed to conjugates that include a polypeptide capable of crossing the blood-brain barrier or entering one or more cell types attached to a transport vector, i.e., a composition capable of transporting an agent (e.g., a therapeutic agent). In certain cases, the polypeptides are directly conjugated to a lipid or polymeric vector to allow targeted application of a therapeutic agent to treat, for example, a cancer, a neurodegenerative disease, or a lysosomal storage disorder.

The present invention describes a system of gene carrier nanoparticles capable of specifically internalize into cancer cells, eg, cancer cells involved in breast cancer, in vitro and in vivo. The system described allows the introduction of therapeutic genes specifically into target cells through NSTR1 receptor-mediated endocytosis of said system, making it possible to provide treatment for this type of conditions, for example by systemic, intravenous, or in situ administration.

Methods of synthesizing a peptide or peptide-like molecule to a polypeptide or protein target based on mode-matching each member of a set of peptide constituents of the peptide or peptide-like molecule to peptide constituents of the target polypeptide or protein target for treatment of neurological diseases.

The invention provides a novel amino acid, neo-tryptophan, as well as polypeptides containing this novel amino acid such as neurotensin analogs. In addition, the invention provides neo-tryptophan derivatives, serotonin-like neo-tryptophan derivatives, and polypeptides containing such derivatives. The invention also provides methods for making neo-tryptophan, neo-tryptophan derivatives, serotonin-like neo-tryptophan derivatives, and compositions containing these compounds. Further, the invention provides methods for inducing a neurotensin response in a mammal as well as methods for treating a mammal having a serotonin recognition molecule.

Neurotensin analogs selective for neurotensin receptor subtype 2 are described. These include hexapeptides (NT(8-13)) and pentapeptides (NT(9-13)) having a D-3,1-naphthyl-alanine, D-3,2-naphthyl-alanine, an alanine derivative such as cyclohexylalanine, or 1,2,3,4-tetrahydroisoquinoline at position 11. Methods of treating pain by administering these neurotensin analogs are also described.

The present invention relates to short polypeptides (e.g., fewer than 19 amino acids in length) and longer polypeptides (e.g., 19 or more amino acids in length) having one or more D-amino acids as targeting moieties. These polypeptides, when conjugated to agents (e.g., therapeutic agents or transport vectors) are capable of transporting the agents across the BBB or into particular cell types. In particular, the short polypeptides can include one or more D-amino acids. These compounds are therefore particularly useful in the treatment of neurological diseases or diseases associated with particular cell types, organs, or tissues.

Analogs for CLR/RAMP receptor ligands are provided that have agonist, superagonist, antagonist, super-antagonist, or multiple receptor modulatng activity. The analogs can be selective for one or more CLR/RAMP receptors, or can be pan-specific for multiple G protein-coupled receptors.

A thio-selective radioactive labeling agent has the following general formula:

*R-L-VS,

• • wherein said *R is a radioisotope, L is a linking group, and VS is a vinylsulfone functional group.

The invention provides a dynorphin A (1-8) and neurotensin (8-13) coupled cyclic hybrid peptide, as well as a synthesizing method and an application thereof, relates to cyclic hybrid peptides, as wellas a synthesizing method and an application thereof, and aims at solving the problems of relatively poor biological stability and poor neuropathic pain relieving effect of existing opioid medicines.The hybrid peptide has an amino acid sequence of Dmt-Gly-c(Cys-NMePhe-Leu-Arg-Arg-Ile-Cys)-Gly-NMeArg-Lys-Pro-Trp-Tle-Leu. The method comprises the following steps: 1, pretreating 'Fmoc' protected Wang resin; 2, removing the 'Fmoc' protective group; 3, performing an amino acid condensation reaction; 4, prolonging a peptide chain; 5, forming a disulfide bond; 6, cutting off the peptide chain from resin; and 7, desalting and purifying crude peptide. The biological stability of hybrid peptide can be enhanced through multi-site unnatural amino acid substitution and cyclic modification, and the cyclic hybrid peptide has an effect of relieving neuropathic pains. The hybrid peptide is used for preparing neuropathic pain relieving medicines.