摘要:
The invention relates to cationic siRNAs, characterized in that they are double-stranded RNA fragments, grafted to the ends of which are oligocations, the number of cationic charges grafted being comparable to or greater than that of the anionic charges carried by the internucleoside phosphates of the RNA strands.
摘要:
The invention relates to cationic siRNAs, characterized in that they are double-stranded RNA fragments, grafted to the ends of which are oligocations, the number of cationic charges grafted being comparable to or greater than that of the anionic charges carried by the internucleoside phosphates of the RNA strands.
摘要:
The invention relates to oligonucleotide-oligocation molecules AiBjH that can be synthetized via automated phosphoramidite chemistry having oligonucleotides moieties Ai and oligocations moieties Bj, wherein. Ai is an i-mer oligonucleotide residue, with i=5 to 50, where nucleotide A is an oligomer with naturally or non naturally occurring nucleobases and/or pentafuranosyl groups and/or native phosphodiester bonds, for example selected from the group comprising deoxyribo, ribo, locked (LNA) nucleotides as well as their chemical modifications or substitutions such as phosphorothioate, 2′-fluoro, 2′-O-alkyl, or a marker group such as a fluorescent agent, Bj is a j-mer organic oligocation moiety, with j=1 to 50, where B is selected from the group comprising .—HPO3—R1—(X—R2n)n1—X—R3—O—, where R1, R2n and R3, identical or different, are lower alkylene, X is NH or NC(NH2)2, n varies from 1 to 5 and n1=2 to 20, .—HPO3—R4—CH(R5X1)—R6—O—, where R4 is lower alkylene, R5 and R6, identical or different, are lower alkylene and X1 is putrescine, spermidine or spermine residue, .—HPO3—R7-(aa)n2-R8—O—, where R7 is lower alkylene and R8 is lower alkylene, serine, a natural aminoalcohol, (aa)n2 is a peptide containing natural aminoacids with cationic side chains, such as Arginine, Lysine, Ornithine, -Histidine, Diaminopropionic acid and n2=2 to 20.
摘要:
A single- or double-stranded deoxyribonucleic acid (DNA) is fragmented and labeled by chemically fragmenting the DNA by creating at least one abasic site on the DNA, and attaching a marker to at least one of the fragments by means of a labeling reagent, the reagent covalently and predominantly coupling to at least one phosphate of the fragment. This method can be applied in the field of diagnosis.
摘要:
The invention relates to oligonucleotide-oligocation molecules AiBjH that can be synthetized via automated phosphoramidite chemistry having oligonucleotides moieties Ai and oligocations moieties Bj, wherein •Ai is an i-mer oligonucleotide residue, with i=5 to 50, where nucleotide A is an oligomer with naturally or non naturally occurring nucleobases and/or pentafuranosyl groups and/or native phosphodiester bonds, for example selected from the group comprising deoxyribo, ribo, locked (LNA) nucleotides as well as their chemical modifications or substitutions such as phosphorothioate, 2′-fluoro, 2′-O-alkyl, or a marker group such as a fluorescent agent, •Bj is a j-mer organic oligocation moiety, with j=1 to 50, where B is selected from the group comprising •—HPO3—R1—(X—R2n)n1—X—R3—O—, where R1, R2n and R3, identical or different, are lower alkylene, X is NH or NC(NH2)2, n varies from 1 to 5 and n1=2 to 20, •—HPO3—R4—CH(R5X1)—R6—O—, where R4 is lower alkylene, R5 and R6, identical or different, are lower alkylene and X1 is putrescine, spermidine or spermine residue, •—HPO3—R7-(aa)n2-R8—O—, where R7 is lower alkylene and R8 is lower alkylene, serine, a natural aminoalcohol, (aa)n2 is a peptide containing natural aminoacids with cationic side chains, such as Arginine, Lysine, Ornithine, -Histidine, Diaminopropionic acid and n2=2 to 20.
摘要:
The present invention relates to a labeling reagent of formula: in which: R1 represents at least one detectable label, L and A are each a linker arm, n is an integer equal to 1, and u is an integer between 0 and 2. The present invention also describes a method of synthesizing said markers and also applications for the labeling of biological molecules, more particularly nucleic acids, with a labeling reagent bearing diazo and nitro functions. The invention is particularly suitable for use in the diagnostics field.
摘要:
The present invention relates to a temperature-stable labeling reagent of formula: in which R1 represents H or an alkyl, aryl or substituted aryl group, R2 represents a detectable marker or at least two detectable markers linked together by at least one multimeric structure, L is a linking arm containing a linear succession of at least two covalent bonds and n an integer equal to 0 or 1, R3 and R4 represent independently of each other: H, NO2, Cl, Br, F, I, R2-(L)n-Y—X—, OR, SR, NR2, R, NHCOR, CONHR, COOR with R=alkyl or aryl, A is a linking arm containing at least one covalent double bond allowing conjugation of the diazo functional group with the aromatic ring and u is an integer between 0 and 2, preferably equal to 0 or 1, and —Y—X— represents —CONH—, —NHCO—, —CH2O—, —CH2S—. The present invention also describes a method for synthesizing said markers as well as applications for labeling biological molecules, in particular nucleic acids, with a labeling reagent carrying the diazomethyl functional group.The invention finds a preferred application in the field of diagnosis.
摘要:
The present invention relates to a labeling reagent of formula: in which: R1 represents at least one detectable label, L and A are each a linker arm, n is an integer equal to 1, and u is an integer between 0 and 2. The present invention also describes a method of synthesizing said markers and also applications for the labeling of biological molecules, more particularly nucleic acids, with a labeling reagent bearing diazo and nitro functions. The invention is particularly suitable for use in the diagnostics field.