摘要:
The invention is directed to a method for detecting a target moiety in a sample of biological specimens by: a) providing at least one conjugate with the general formula (I) Xn—P—Ym, with X is an detection moiety, P an enzymatically degradable spacer and Y an antigen recognizing moiety and n, m are integers between 1 and 100 and wherein X and Y are covalently bound to P; b) contacting the sample of biological specimens with at least one conjugate, thereby labeling the target moiety recognized by the antigen recognizing moiety Y; c) detecting the target moiety labeled with the conjugate with the detecting moiety X; and d) enzymatically degrading spacer P, thereby cleaving the detection moiety X from the conjugate. The method is useful to identify target moieties on the biological specimens. The biological specimens detected by the conjugate can be subsequently removed from the sample.
摘要:
The invention is directed to a fluorescent dye according to the general formula I: with C is a core moiety comprising 20 to 200 atoms; S same or different ether residues comprising 1 to 10 carbon atoms; n is an integer ranging from 2 to 500; m is an integer ranging from 0 to 500; x is an integer ranging from 2 to 50; y is an integer ranging from 1 to 50; R same or different residue comprising a reactive group capable of forming a covalent bond with a biomolecule; F same or different fluorophores covalently bound to (S)n. The fluorescent dyes can be conjugated to a biomolecule and used for flow cytometry and/or by fluorescence microscopy.
摘要:
The invention is directed to a fluorescent dye according to the general formula I: with C is a core moiety comprising 20 to 200 atoms; S same or different ether residues comprising 1 to 10 carbon atoms; n is an integer ranging from 2 to 500; m is an integer ranging from 0 to 500; x is an integer ranging from 2 to 50; y is an integer ranging from 1 to 50; R same or different residue comprising a reactive group capable of forming a covalent bond with a biomolecule; F same or different fluorophores covalently bound to (S)n. The fluorescent dyes can be conjugated to a biomolecule and used for flow cytometry and/or by fluorescence microscopy.
摘要:
The invention is directed to a releasable conjugate comprising a biotinylated ligand having a biotin moiety, a ligand moiety (Ligand1) and a biotin-binding molecule (bbm) bound to the biotin moiety of the biotinylated ligand. The ligand moiety of the biotinylated ligand may be separated by a spacer group consisting of polyethylene glycol. Furthermore, the invention relates to a method for cleaving the releasable conjugate by providing biotin or streptavidin and an auxiliary release agent in a sufficient concentration to displace the biotin-binding molecule (bbm) from the biotin moiety of the biotinylated ligand and a method for separation of target cells from a cell sample utilizing the conjugate.
摘要:
The invention is directed to a method for detecting a target moiety in a sample of biological specimens by: a) providing at least one conjugate with the general formula (I) Xn-P-Ym, with X is an detection moiety, P an enzymatically degradable spacer and Y an antigen recognizing moiety and n, m are integers between 1 and 100 and wherein X and Y are covalently bound to P; b) contacting the sample of biological specimens with at least one conjugate, thereby labeling the target moiety recognized by the antigen recognizing moiety Y; c) detecting the target moiety labeled with the conjugate with the detecting moiety X; and d) enzymatically degrading spacer P, thereby cleaving the detection moiety X from the conjugate. The method is useful to identify target moieties on the biological specimens. The biological specimens detected by the conjugate can be subsequently removed from the sample.
摘要:
The invention is directed to a method for detecting a target moiety in a sample of biological specimens by: a) providing at least one conjugate with the general formula (I) Xn—P—Ym, b) contacting the sample of biological specimens with at least one conjugate, thereby labeling the target moiety recognized by the antigen recognizing moiety Y with the conjugate c) exciting the labelled target moieties with light having a wavelength within the absorbance spectrum of fluorescent moiety X d) detecting the labelled target moieties by detecting the fluorescence radiation and e) degrading the fluorescent moiety X of the labelled target moieties by irradiating the conjugate with light having a wavelength within the absorbance spectrum of fluorescent moiety X Use of the method in fluorescence microscopy, flow cytometer, spectrofluorometry, cell separation, pathology or histology.
摘要:
The invention is directed to a method for detecting a target moiety in a sample of biological specimens by: a) providing at least one conjugate with the general formula (I) Xn—P—Ym, b) contacting the sample of biological specimens with at least one conjugate, thereby labeling the target moiety recognized by the antigen recognizing moiety Y with the conjugate c) exciting the labelled target moieties with light having a wavelength within the absorbance spectrum of fluorescent moiety X d) detecting the labelled target moieties by detecting the fluorescence radiation and e) degrading the fluorescent moiety X of the labelled target moieties by irradiating the conjugate with light having a wavelength within the absorbance spectrum of fluorescent moiety X Use of the method in fluorescence microscopy, flow cytometer, spectrofluorometry, cell separation, pathology or histology
摘要:
The invention is directed to a releasable conjugate comprising a biotinylated ligand having a biotin moiety, a ligand moiety (Ligand1) and a biotin-binding molecule (bbm) bound to the biotin moiety of the biotinylated ligand. The ligand moiety of the biotinylated ligand may be separated by a spacer group consisting of polyethylene glycol. Furthermore, the invention relates to a method for cleaving the releasable conjugate by providing biotin or streptavidin and an auxiliary release agent in a sufficient concentration to displace the biotin-binding molecule (bbm) from the biotin moiety of the biotinylated ligand and a method for separation of target cells from a cell sample utilizing the conjugate.
摘要:
The invention is directed to a method for enriching target cells from a sample of cells characterized by: a) contacting the sample with a cell aggregation agent and first magnetic particles having an iron content of 0.1 pg to 5000 pg, coupled to a first antigen recognizing moiety; and second magnetic particles having an iron content of 0.05 fg to 100 fg and coupled to a second antigen recognizing moiety to obtain mixture a) b) applying a first magnetic field gradient to the mixture a) thereby removing the cells bound to the first antigen recognizing moiety coupled to the first magnetic particles, to obtain a mixture b) and obtaining an agglomerate comprising the cells of mixture a) bound to the cell aggregation agent c) applying a second magnetic field gradient to the mixture b) thereby immobilizing the cells bound to the second antigen recognizing moiety d) recovering the immobilized cells from the second magnetic field gradient as target cells.
摘要:
The invention is directed to a Method for detecting a target moiety in a sample of biological specimens by: a) providing at least one conjugate with the general formula (I) An-P-Bm-Cq-Xo (I) with A: antigen recognizing moiety; P: enzymatically degradable spacer; B: first binding moiety C second binding moiety X: detection moiety; n, m, q, o integers between 1 and 100, wherein B and C are non-covalently bound to each other and A and B are covalently bound to P b) labelling the target moiety recognized by the antigen recognizing moiety A with at least one conjugate c) detecting the labelled target moiety via detecting moiety X d) cleaving Cq-Xo by disrupting the non-covalent bond between Bm and Cq from the labelled target moiety e) cleaving the binding moiety Bm from the labelled target moiety by enzymatically degrading spacer P. The method is useful to identify target moieties on the biological specimens. The biological specimens detected by the conjugate can be subsequently removed from the sample.