Abstract:
The present invention relates to an automatable method for the improved diagnosis of pathologically altered cells by simultaneously staining at least two different molecular markers, which exhibit a change in gene expression which is disease-associated, in a cell or constituent regions of a tissue sample by means of using combinations of antibodies and accrediting signal intensities.
Abstract:
Luminescent inorganic nanoparticles comprising: (a) a core made from a first metal salt or oxide being surrounded by (b) a shell made from a second metal salt or oxide being luminescent and having non-semiconductor properties. These nanoparticles can be advantageously used in (fluorescence) resonance energy transfer ((F)RET)-based bioassays in view of their higher (F)RET efficiency.
Abstract:
The present invention relates to luminescent inorganic nanoparticles comprising (a) a core made from a first metal salt or oxide being surrounded by (b) a shell made from a second metal salt or oxide being luminescent and having non-semiconductor properties. These particles can be advantageously used in (fluorescence) resonance energy transfer ((F)RET)-based bioassays in view of their higher (F)RET efficiency.
Abstract:
A process for synthesizing nanoparticles, in particular metal salt nanoparticles. To the synthesis mixture is added a modifying reagent which binds, by means of a first functional group, to the nanoparticle surface and which carries a second functional group for binding to molecules which are specifically selected in dependence on the subsequent use of the nanoparticles. This dispenses with a postsynthetic, separate, application-specific modification step. A new substance class, the pentaalkyl iminobis(methylenephosphono)carboxylates, are particularly suitable for this purpose. These modifying reagents permit the nanoparticles to grow in a specifically controlled manner and, at the same time, modify the surface of the growing nanoparticles, (in-situ) during the synthesis, such that the particles can be very readily dissolved in a large number of solvents and carry functional groups for coupling on molecules, resulting in the particles having, immediately after having been synthesized, a certain all-round usability.
Abstract:
The invention relates to a method for filtering nucleic acids, to a kit for carrying out the method according to the invention and to a novel use of magnetic particles for filtering a biological sample. The method according to the invention comprises the following steps: a) the sample is held in an aqueous solution; b) lysing of the sample; c) separation of cellular debris; and d) the nucleic acids are isolated from the solution, steps (a) to (c) taking place under non-chaotropic conditions.
Abstract:
The invention relates to an assay based on resonance energy transfer (RET), comprising a first molecule grope A, which is marked with at least one energy donor, and at least one second molecule group B which is marked with at least one energy acceptor, the donor comprising a molecule or particle which can be energetically excited by an external radiation source and which is fluorescence enabled and the acceptor comprising a molecule or particle which can be excited by energy transfer via the donor with partial or complete quenching of the donor fluorescence, and the donor and/or acceptor comprise luminescing inorganic dope nanoparticles having an expansion of ≦50 nanometers, emitting electromagnetic radiation with stokes or anti-stokes scattering after energetic excitation.
Abstract:
A process for synthesizing nanoparticles, in particular metal salt nanoparticles. To the synthesis mixture is added a modifying reagent which binds, by means of a first functional group, to the nanoparticle surface and which carries a second functional group for binding to molecules which are specifically selected in dependence on the subsequent use of the nanoparticles. This dispenses with a postsynthetic, separate, application-specific modification step. A new substance class, the pentaalkyl iminobis(methylenephosphono) carboxylates, are particularly suitable for this purpose. These modifying reagents permit the nanoparticles to grow in a specifically controlled manner and, at the same time, modify the surface of the growing nanoparticles, (in-situ) during the synthesis, such that the particles can be very readily dissolved in a large number of solvents and carry functional groups for coupling on molecules, resulting in the particles having, immediately after having been synthesized, a certain all-round usability.
Abstract:
The invention relates to an assay based on resonance energy transfer (RET), comprising a first molecule grope A, which is marked with at least one energy donor, and at least one second molecule group B which is marked with at least one energy acceptor, the donor comprising a molecule or particle which can be energetically excited by an external radiation source and which is fluorescence enabled and the acceptor comprising a molecule or particle which can be excited by energy transfer via the donor with partial or complete quenching of the donor fluorescence, and the donor and/or acceptor comprise luminescing inorganic dope nanoparticles having an expansion of ≦50 nanometers, emitting electromagnetic radiation with stokes or anti-stokes scattering after energetic excitation.
Abstract:
The invention relates to a method for filtering nucleic acids, to a kit for carrying out the method according to the invention and to a novel use of magnetic particles for filtering a biological sample. The method according to the invention comprises the following steps: a) the sample is held in an aqueous solution; b) lysing of the sample; c) separation of cellular debris; and d) the nucleic acids are isolated from the solution, steps (a) to (c) taking place under non-chaotropic conditions.