摘要:
The subject invention pertains to a modified MC1R peptide ligand comprising a peptide that is a melanocortin 1 receptor (MC1R) ligand and a functionality or linker, such as a click functionality, for conjugation to a surface or agent. The modified MC1R peptide ligand can be coupled, e.g., via a click reaction with a complementary click functionality attached, to a moiety to form an MC1R-targeted agent. Drugs, contrast agents, polymers, particles, micelles, surfaces of larger structures, or other moieties can be targeted to the MC1R. The subject invention also pertains to a MC1R peptide ligand-micelle complex comprising a peptide that is a melanocortin 1 receptor ligand connected via a click reaction product to a micelle. The micelle is stable in vivo and can target melanoma tumor cells by association of the peptide ligand with the MC1R or the tumor and selectively provide a detectable and/or therapeutic agent (such as an imageable contrast agent and/or anti-cancer agent) selectively to the tumor cell.
摘要:
A method for stimulating integumental melanocytes by the topical application of alpha-MSH analogs, and compositions comprising said analogs for use in the method are described.
摘要:
A method for stimulating integumental melanocytes by the topical application of alpha-MSH analogs, and compositions comprising said analogs for use in the method are described.
摘要:
Cyclic analogues of the tridecapeptide hormone, .alpha.-melanotropin. (.alpha.-melanocyte stimulating hormone, .alpha.-MSH), wherein a physiologically stable intramolecular interaction exists (1) between the amino acid residue at position 4 and an amino acid residue at position 10 or 11, and/or (2) between the amino acid residue at position 5 and an amino acid residue at position 10 or 11. Preferred analogues, e.g., [half-Cys.sup.4, half-Cys.sup.10 ]-.alpha.-MSH display greatly increased in vitro potency, prolongation, and resistance to enzymatic degradation.
摘要:
Effects of endogenous glucagon in mammals are diminished by administration of compositions including certain semi-synthetic analogs of glucagon. Preferred analogs include [N.sup..alpha. -TNB, HArg.sup.12 ]glucagon and [dHis.sup.1 ][N.sup..alpha. -TNB, HArg.sup.12 ]glucagon, parenterally administered at doses of from about 0.05 to about 50 mg of analog per kg of body weight.
摘要:
Methods that identify cells as pancreatic cancer cells based on assessing the expression of combinations of target molecules expressed preferentially on pancreatic cancer cells are disclosed. Combinations were initially discovered by microarray analysis and selected based upon tumor specificity, relative lack of cross-reactivity with normal tissues, and applicability as targets of multispecific ligands. The claimed methods encompass measuring the expression of three or more specific target molecules in combination and correlating positive expression of the combination with an identification of the cell as a pancreatic cancer cell.
摘要:
Cyclic lactam peptides, seven amino acids in length, having D-2'-naphthylalanine (D-2'-Nal) or D-para-iodo-phenylalanine D-(p-I)Phe at position 4 of the peptide provided potent and specific antagonists of the two neural melanocortin receptors and of the peripheral receptor. In particular, the peptide ##STR1## was found to be a potent antagonist of the MC3 and MC4 receptors with partial agonist activity, and a full agonist of the MC1 and MC5 receptors; the peptide ##STR2## was found to be a potent antagonist of the MC3 and MC4 receptors with partial agonist activity. Both peptides have antagonist activities in the classical frog skin bioassay for pigmentation at the MC1 receptor.
摘要:
Cyclic Alpha-MSH fragment analogues of Ac-Nle.sup.4 -Glu.sup.5 -His.sup.6 -D-Phe.sup.7 -Arg.sup.8 -Try.sup.9 -Gly.sup.10 -NH.sub.2. The method of stimulating melanocytes by the transdermal application of these biologically-active analogues and compositions comprising these analogues for use in the method are disclosed.
摘要:
A pharmaceutically active composition comprising a pharmaceutically acceptable carrier and one or more alpha-MSH or analogues thereof for use in the stimulation of integumental melanocytes in vertebrates in order to bring about the production of melanin is disclosed.
摘要:
Novel compounds which are analogs of .alpha.-melanotropin and which exhibit reactivity for the central nervous system receptors without exhibiting substantial reactivity for the peripheral receptors are disclosed. The compounds of the present invention are polypeptides of the formula: ##STR1## wherein R.sup.1 is a substituted or unsubstituted aromatic radical;R.sup.2 is hydrogen or a methyl group;R.sup.3 is carboxylate, carboxamide, hydroxymethyl, or aldehyde group or a peptide residue;R.sup.4 is a simple amino acid residue;R.sup.5 is a simple amino acid residue;R.sup.6 and R.sup.7, which may be the same or different, are hydrogen, methyl or lower alkyl having one to five carbon atoms;R.sup.8 and R.sup.9, which may be the same or different, are hydrogen, methyl or lower alkyl having one to five carbon atoms;X and Y are sulfur, methylene, SO, or SO.sub.2 ;Z is --NH.sub.2, ##STR2## and n is an integer greater than or equal to 2.The noval compounds may be used in humans and lower animals to facilitate memory and behavior, improve fetal growth and development, enhance attention, improve socialization, stimulate sexual activity, reverse morphine analgesia, act as an antidepressant, act as an antipyretic and centrally direct effects on visceral functions.
摘要翻译:公开了作为α-促黄体激素类似物并且对中枢神经系统受体表现出反应性而不对外周受体表现出显着反应性的新型化合物。 本发明的化合物是下式的多肽:其中R 1是取代或未取代的芳族基团; R2是氢或甲基; R 3是羧酸酯,甲酰胺,羟甲基或醛基或肽残基; R4是简单的氨基酸残基; R5是简单的氨基酸残基; R 6和R 7可以相同或不同,是氢,甲基或具有1-5个碳原子的低级烷基; R8和R9可以相同或不同,是氢,甲基或具有1-5个碳原子的低级烷基; X和Y是硫,亚甲基,SO或SO 2; Z是-NH2,,n是大于或等于2的整数。该化合物可用于人类和低等动物,以促进记忆和行为,改善胎儿生长发育,增强注意力,改善社会化,刺激 性活动,反向吗啡镇痛作为抗抑郁药,作为对内脏功能的解热和中心直接作用。