Provided are devices and methods for capturing template sample nucleic acids in a spatially specific manner that is coordinated with the original location of the templates in a tissue sample. By preserving spatial information regarding a given sample, the disclosed technology allows for improved diagnostics as well as improved therapeutic decision making for patient care and therapy.

An array chip useful for biochemical assays is provided wherein the chip includes a field region arranged with attachment sites according to a first pitch and at least one track region having a one-dimensional spot pattern arranged according to a second pitch that is less dense and is a non-integer multiple of the first pitch so that one-dimensional Moir averaging may be applied in the track region, thereby to attain alignment of the chip to the optical instrumentation with a higher density of attachment sites.

An array chip useful for biochemical assays is provided wherein the chip includes a field region arranged with attachment sites according to a first pitch and at least one track region having a one-dimensional spot pattern arranged according to a second pitch that is less dense and is a non-integer multiple of the first pitch so that one-dimensional Moir averaging may be applied in the track region, thereby to attain alignment of the chip to the optical instrumentation with a higher density of attachment sites.

An array chip useful for biochemical assays is provided wherein the chip includes a field region arranged with attachment sites according to a first pitch and at least one track region having a one-dimensional spot pattern arranged according to a second pitch that is less dense and is a non-integer multiple of the first pitch so that one-dimensional Moir averaging may be applied in the track region, thereby to attain alignment of the chip to the optical instrumentation with a higher density of attachment sites.

A method for determining a presence or absence of one or more target analytes in a sample includes contacting the sample with an array of particles comprising at least first and second particle subsets disposed therein with a known particle number ratio with respect to each other. The first particle subset has at least one binding site configured to bind with a first target analyte and the second particle subset has at least one binding site configured to bind with a second, different target analyte. Changes are detected in a detectable signal emitted by the particles after contacting the sample with the array. A number of the particles that emit the change in the detectable signal are counted and this number is compared to the known particle number ratio of the subsets so as to determine the presence or absence of the one or more of the target analytes.

According to one embodiment of the present invention, a structure includes: a substrate having a patterned surface of one or more binding sites; and a molecular shape made by a polynucleotide platform having a shape corresponding to a shape of a binding site of the one or more binding sites, the molecular shape being bound to one of the one or more binding sites.

A method for characterizing proteins, including steps of (a) detecting a plurality of proteins, wherein individual proteins of the plurality are associated with unique identifiers, wherein the detecting distinguishes the identities of the individual proteins and the unique identifiers associated with the individual proteins; (b) digesting the proteins to form peptides, wherein the peptides from each protein are associated with the unique identifiers for the respective individual protein; (c) detecting the peptides and associated unique identifiers, wherein the detecting distinguishes characteristics of individual peptides, and wherein the detecting distinguishes unique identifiers associated with the individual peptides; and (d) correlating characteristics detected in step (c) with individual proteins detected in step (a) based on the unique identifiers associated with the individual proteins and the peptides.

A method for characterizing proteins, including steps of (a) detecting a plurality of proteins, wherein individual proteins of the plurality are associated with unique identifiers, wherein the detecting distinguishes the identities of the individual proteins and the unique identifiers associated with the individual proteins; (b) digesting the proteins to form peptides, wherein the peptides from each protein are associated with the unique identifiers for the respective individual protein; (c) detecting the peptides and associated unique identifiers, wherein the detecting distinguishes characteristics of individual peptides, and wherein the detecting distinguishes unique identifiers associated with the individual peptides; and (d) correlating characteristics detected in step (c) with individual proteins detected in step (a) based on the unique identifiers associated with the individual proteins and the peptides.

Methods and compositions are provided to identify oligonucleotides that bind targets of interest. The targets include tissues, cells, circulating biomarkers such as microvesicles, including those derived from various diseases. The oligonucleotides can be used in diagnostic and therapeutic applications.

Methods and compositions are provided to identify oligonucleotides that bind targets of interest. The targets include tissues, cells, circulating biomarkers such as microvesicles, including those derived from various diseases. The oligonucleotides can be used in diagnostic and therapeutic applications.