Abstract: The relative abundance of bacterial species in a patient’s microbiome is quantified using DNA nanostructures that fluoresce multiple colors. Immobilizing binders have binding sites with nucleotide sequences complementary to those at a primary site on rRNA subunits of each selected bacterial species. Fluorophore binders have binding sites with nucleotide sequences complementary to those at a secondary site on the rRNA subunits. The fluorophore binders for each bacterial species are attached to nanostructures that fluoresce a particular color for each bacteria. The immobilizing binders are attached to the surface of a microscopy chamber. RNA subunits are extracted from a microbiome sample of the patient and are attached to the corresponding immobilizing binders and fluorophore binders such that the RNA subunits of each bacterial species fluoresce a color unique to the species. DNA nanostructures emitting the same color are counted to determine the relative concentration of the bacterial species in the sample.

Abstract: The present invention relates to a method and a DNA nanostructure for detecting a target structure. In particular, the present invention relates to a DNA nanostructure, which ensures a preferably linear dependence on the number of marker molecules and the measurement signal regardless of the physical arrangement of a plurality of such DNA nanostructures by virtue of the skilled selection of the shape of the DNA nanostructure and the placement of the marker molecules attached to it. The invention additionally relates to the use of said DNA nanostructures and other nanoreporters, preferably in combination with adapters which bind specifically to target molecules, in a method for quantifying a plurality of target molecules, preferably in a simultaneous manner, using a multiplex method.

Abstract: The present invention relates to a method and a DNA nanostructure for detecting a target structure. In particular, the present invention relates to a DNA nanostructure, which ensures a preferably linear dependence on the number of marker molecules and the measurement signal regardless of the physical arrangement of a plurality of such DNA nanostructures by virtue of the skilled selection of the shape of the DNA nanostructure and the placement of the marker molecules attached to it. The invention additionally relates to the use of said DNA nanostructures and other nanoreporters, preferably in combination with adapters which bind specifically to target molecules, in a method for quantifying a plurality of target molecules, preferably in a simultaneous manner, using a multiplex method.