摘要:
A receptor (binding protein) specific for 6(R)-L-erythro-5,6,7,8-tetrahydrobiopterin which is a drug effective for neuropsychiatric disorders such as infantile autism is provided. This receptor is contained in the cytosol fraction or the membrane fraction obtained from a homogenate of an animal organ. It is solubilized from the membrane fraction in the presence of 3-{(3-cholamidopropyl)-dimethylammonio}-1-propanesulfonate (CHAPS). This receptor is characterized in that the binding ability thereof to 6R-BH4 is mostly lost by heating at 100.degree. C. for 10 minutes, the binding ability thereof to 6R-BH4 is significantly lost by incubating with trypsin at 37.degree. C. for 15 minutes, and said receptor shows a relative molecular weight of about 340 to 380 kilodaltons when specifically bound to tritium-labeled 6R-BH4 and analyzed with a molecular sieve provided with a COSMOSIL 5 Diol-300 column.
摘要:
The present invention provides an apoptosis inhibitor containing a 15R-isocarbacyclin derivative or a 15-deoxy-isocarbacyclin derivative, which can be manufactured easily and economically by means of chemical synthesis.
摘要:
The present invention provides a neurodegenerative disease therapeutic agent containing as its active ingredient a (15R)-isocarbacycline derivative indicated by the following formula [I] or a 15-deoxy-isocarbacycline derivative indicated by the following formula [III]: (wherein, R1 represents a C1-C6 alkylene group, and R2 represents a hydrogen atom, a C1-C7, alkyl group or protective group); or, (wherein, R1 and R2 are the same as those defined in formula [I]).
摘要:
Methods and reagents for transition metal-promoted carbonylation via isocyanate using carbon-isotope labeled carbon monoxide are provided. The resultant carbon-isotope labeled compounds are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
摘要:
A labeling compound of the present invention includes a structure represented by formula (1) wherein X1 is 11CH3, CH218F, CF218F, 18F, 76Br or 124I, X2 is CN or NO2, and R is any one of groups represented by or a structure represented by formula (2) wherein X3 is CH3, CH2F, CF3, F, Br or I, and R is defined equally as in the formula (1). This allows realizing a labeling compound for PET, capable of quantifying aromatase with high accuracy.
摘要:
A pancreatic endocrine cell indicating agent of the present invention includes a modified polypeptide in which a metal chelator binds only to an amino acid that is located at a site other than a somatostatin receptor-binding active site in a polypeptide selected from the group consisting of somatostatin and somatostatin analogs; and a radioactive metal nuclide held by the metal chelator. According to the present invention, it is therefore possible to provide a novel pancreatic endocrine cell indicating agent.
摘要:
The present invention provides novel isocarbacyclin derivatives useful for search and study of prostacyclin receptor and as a therapeutic drug for central nervous system diseases, which derivatives are expressed by the following formula �I!: ##STR1## �where, R.sup.1 represents a hydrogen atom, an alkyl group, or cation of an appropriate amount, and R.sup.2 an alkylene group.!
摘要:
[OBJECT]The present invention provides an 18F-labeled azide compound usable in the Huisgen reaction which enables 18F-labeling although only a small quantity of alkyne compound is available as a counterpart substrate, more specifically the 18F-labeled azide compound enabling the PET to be applied to peptides or oligonucleotides and enabling the 18F-labeling of any sites of oligonucleotide other than the 5′ end or 3′ end thereof, a reagent for 18F-labeling, and a method for 18F-labeling of an alkyne compound using the same.[SOLVING MEANS]An 18F-labeled azide compound according to the present invention is expressed by the following structural formula 1.[SELECTED DRAWING] None
摘要:
The invention provides a method for introducing 1,4,7,10-tetraazacyclododecane-N,N′,N″,N′″-tetraacetic acid (DOTA) into a compound such as a peptide. The method comprises a first step for preparing a mixed liquid of DOTA having no protecting group and dimethylsulfoxide, and a second step for contacting the mixed liquid with the compound carried on a solid-phase carrier.
摘要:
Methods and reagents for rhodium-promoted carbonylation via isocyanate using carbon-isotope labeled carbon monoxide are provided. The resultant carbon isotope labeled compounds are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.