摘要:
It is intended to provide a method of producing a pyrrole-imidazole polyamide whereby a longer pyrrole-imidazole polyamide can be conveniently synthesized and a peptide (protein) can be easily transferred. According to this method, a pyrrole-imidazole polyamide having a carboxylate group which can be excised from a solid phase carrier at its end, makes it possible to directly transfer various functional groups and can exactly distinguish DNA sequences can be efficiently produced. A method of synthesizing a pyrrole-imidazole polyamide characterized by performing automatic synthesis by the solid phase Fmoc method with the used of a peptide synthesizer; a pyrrole-imidazole polyamide having a carboxyl group at its end obtained by this method; a pyrrole-imidazole polyamide having a DNA alkylation agent transferred into the carboxyl group at the end of the above-described pyrrole-imidazole polyamide; and a sequence-specific DNA alkylation method characterized by using the above compound.
摘要:
A method for screening the effect of a segment A (chemical species A) on a substance (for example, a cell) containing DNA or RNA by using artificial chemical species. Namely, a method of detecting or identifying the function of a chemical species A on a substance containing DNA or RNA by using one or more chemical species represented by the following general formula (I) which are capable of recognizing a DNA base sequence; a kit therefor; and a plate to be used therein: B-L-A (I) wherein B represents a chemical structure containing an non-natural base capable of recognizing a DNA base sequence; A represents a chemical structure having an interaction with DNA; and L represents a linker whereby the chemical structures A and B can be linked together.
摘要:
A method for screening the effect of a segment A (chemical species A) on a substance (for example, a cell) containing DNA or RNA by using artificial chemical species. Namely, a method of detecting or identifying the function of a chemical species A on a substance containing DNA or RNA by using one or more chemical species represented by the following general formula (I) which are capable of recognizing a DNA base sequence; a kit therefor; and a plate to be used therein: B-L-A (I) wherein B represents a chemical structure containing an non-natural base capable of recognizing a DNA base sequence; A represents a chemical structure having an interaction with DNA; and L represents a linker whereby the chemical structures A and B can be linked together.
摘要:
Compounds represented by the general formula (I): which two DNA strands can be interstrand-crossliked: A-L-B-X-B-L-A (I) wherein B represents a chemical structure capable of recognizing the nucleotide sequence of DNA; A represents a chemical structure capable of binding to one of the bases of DNA; L represents a linker by which the chemical structures of A and B can be linked to each other; X represents a spacer by which the A-L-B components can be linked to each other. A method of interstrand-crosslinking DNA by using these compounds; and medicinal compositions containing interstarand-crosslinking agents of DNA.
摘要:
It is intended to provide a pyrrole-imidazole polyamide type functional molecule having enhanced abilities of alkylating DNA and recognizing a sequence, compared with the existing functional molecules of this type, for a specific base sequence occurring on DNA. A hairpin polyamide having an alkylation site via a vinyl linker at the end of a pyrrole-imidazole polyamide. Drugs for inhibiting the expression of a specific gene and anticancer agents containing the above hairpin polyamide.
摘要:
The invention provides a compound recognizing the minor group of hydrogen bonds between base pairs and being capable of forming a covalent bond with bases. The inventive compound can recognize a specific nucleotide sequence and can strongly bind to adjacent bases via covalent bonding, to regulate the expression of a DNA with the nucleotide sequence. The invention provides a DNA alkylating agent comprising a compound represented by the general formula I: wherein R represents a lower amyl group or a polyamide group; and X represents nitrogen or CH.
摘要:
It is intended to provide a pyrrole-imidazole polyamide type functional molecule having enhanced abilities of alkylating DNA and recognizing a sequence, compared with the existing functional molecules of this type, for a specific base sequence occurring on DNA. A hairpin polyamide having an alkylation site via a vinyl linker at the end of a pyrrole-imidazole polyamide. Drugs for inhibiting the expression of a specific gene and anticancer agents containing the above hairpin polyamide.
摘要:
Novel chemical species capable of simultaneously alkylating double-stranded DNA and cleaving the same; methods for alkylating and cleaving DNA by using these species; and anticancer agents with the use of these compounds. Compounds represented by the following general formula (I) which are capable of simultaneously alkylating double-stranded DNA and cleaving the same; a method for alkylating DNA and a method for cleaving double stranded DNA by using these compounds; and medicinal compositions with the use of these compounds: B—L—A(I) wherein B represents a chemical structure capable of recognizing the base sequence of DNA, for example, optionally substituted pyrrole-imidazole polyamide; A represents a chemical structure capable of binding to one base of DNA, for example, the alkylation moiety of duocarmycin A; and L represents a linker capable of binding the chemical structures A and B, for example, vinyl.
摘要:
The present invention provides nucleic acid compounds which have a non-nucleic acid structure with ring skeleton to which two functional groups are bound with fixed state and are able to point to substantially the same direction, nucleic acid compounds which can form triple strands with third nucleotide chains, nucleic acid compounds which have improved permeability, and synthetic methods thereof.
摘要:
The present invention provides a target gene-specific histone modification regulator, which comprises a conjugate between a histone modification regulator and a polyamide capable of recognizing a regulatory region in a target gene. This enables the provision of a target gene-specific histone modification regulator.