WO2024256715A1 - Réactif pour le contrôle qualité de l'hybridation in situ - Google Patents
Réactif pour le contrôle qualité de l'hybridation in situ Download PDFInfo
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- WO2024256715A1 WO2024256715A1 PCT/EP2024/066706 EP2024066706W WO2024256715A1 WO 2024256715 A1 WO2024256715 A1 WO 2024256715A1 EP 2024066706 W EP2024066706 W EP 2024066706W WO 2024256715 A1 WO2024256715 A1 WO 2024256715A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6813—Hybridisation assays
- C12Q1/6841—In situ hybridisation
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6813—Hybridisation assays
- C12Q1/6816—Hybridisation assays characterised by the detection means
- C12Q1/682—Signal amplification
Definitions
- RNAscope® reference ⁇ guide: ⁇ Guidelines ⁇ and ⁇ Protocols ⁇ for ⁇ Obtaining ⁇ Optimized ⁇ RNA ⁇ in ⁇ situ ⁇ Hybridization ⁇ Results ⁇ with ⁇ Any ⁇ Tissue ⁇ Type ⁇ from ⁇ Any ⁇ Species. ⁇ ACD.
- the ⁇ disclosure ⁇ pertains ⁇ to ⁇ monitoring ⁇ probes comprising ⁇ at ⁇ least ⁇ one ⁇ identifier ⁇ element (t) ⁇ comprising ⁇ a ⁇ nucleotide ⁇ sequence ⁇ which ⁇ is ⁇ essentially ⁇ complementary ⁇ to ⁇ at ⁇ least ⁇ a ⁇ section ⁇ of ⁇ the ⁇ unique ⁇ set ⁇ identifier ⁇ sequence ⁇ of ⁇ an ⁇ identifier ⁇ element ⁇ (T) ⁇ of ⁇ a ⁇ corresponding ⁇ decoding ⁇ element.
- ⁇ In ⁇ one ⁇ embodiment ⁇ the ⁇ nucleotide ⁇ acid ⁇ sequence of ⁇ the ⁇ monitoring ⁇ probe is ⁇ attached ⁇ to ⁇ a ⁇ particle ⁇ selected ⁇ from ⁇ a ⁇ non-magnetic ⁇ bead ⁇ particle, ⁇ magnetic ⁇ bead ⁇ particle, ⁇ a ⁇ streptavidin ⁇ coated ⁇ particle, ⁇ a ⁇ biotin ⁇ coated ⁇ particle, ⁇ and/or ⁇ any ⁇ combination ⁇ thereof.
- In ⁇ yet ⁇ a ⁇ further ⁇ embodiment ⁇ the ⁇ monitoring ⁇ probe is ⁇ immobilized ⁇ on ⁇ a ⁇ slide ⁇ surface through ⁇ a ⁇ poly-lysine ⁇ coating ⁇ of ⁇ the ⁇ slide ⁇ surface.
- the ⁇ monitoring ⁇ probe is ⁇ immobilized ⁇ to ⁇ the ⁇ poly-lysine ⁇ coated ⁇ slide ⁇ surface ⁇ using ⁇ homobifunctional ⁇ or ⁇ heterobifunctional ⁇ cross-linking ⁇ reagents ⁇ via ⁇ a ⁇ reactive ⁇ group.
- In ⁇ yet ⁇ a ⁇ further ⁇ embodiment ⁇ the ⁇ monitoring ⁇ probe or ⁇ the ⁇ slide ⁇ surface comprise ⁇ a ⁇ reactive ⁇ group ⁇ consisting ⁇ of ⁇ an ⁇ alkyne ⁇ or ⁇ azide, ⁇ and ⁇ the ⁇ other ⁇ contact ⁇ surface ⁇ comprises ⁇ the ⁇ partner ⁇ azide or ⁇ alkyne, ⁇ such ⁇ that ⁇ the ⁇ immobilization ⁇ can ⁇ occur ⁇ using ⁇ click ⁇ chemistry.
- In ⁇ yet ⁇ a ⁇ further ⁇ embodiment ⁇ the ⁇ size ⁇ of ⁇ the ⁇ monitoring ⁇ probe is ⁇ 250 ⁇ nm ⁇ or ⁇ less; ⁇ 225 ⁇ nm ⁇ or ⁇ less; ⁇ 210 ⁇ nm ⁇ or ⁇ less; ⁇ but ⁇ at ⁇ least ⁇ 90 ⁇ nm, ⁇ at ⁇ least ⁇ 130 ⁇ nm ⁇ at ⁇ least ⁇ 180 ⁇ nm, ⁇ in ⁇ one ⁇ embodiment ⁇ the ⁇ size ⁇ of ⁇ the ⁇ monitoring ⁇ probe is ⁇ about ⁇ 200 ⁇ nm.
- the method ⁇ to ⁇ monitor ⁇ an ⁇ in ⁇ situ hybridization ⁇ multiplex ⁇ reaction ⁇ comprises ⁇ at ⁇ least ⁇ one ⁇ monitoring ⁇ probe as ⁇ described ⁇ herein, ⁇ wherein ⁇ the ⁇ in ⁇ situ hybridization ⁇ multiplex ⁇ reaction ⁇ is ⁇ characterized ⁇ by ⁇ comprising: ⁇ a.) a ⁇ binding ⁇ element which ⁇ is ⁇ essentially ⁇ complementary ⁇ to ⁇ at ⁇ least ⁇ a ⁇ section ⁇ of ⁇ an ⁇ analyte ⁇ nucleotide ⁇ sequence ⁇ to ⁇ be ⁇ detected ⁇ and ⁇ an ⁇ identifier ⁇ element ⁇ (T) ⁇ comprising ⁇ a ⁇ nucleotide ⁇ sequence ⁇ which ⁇ is ⁇ unique ⁇ to ⁇ the ⁇ analyte ⁇ nucleotide ⁇ sequence; ⁇ and/or b.) a ⁇ decoding ⁇ element comprising ⁇ an ⁇ identifier ⁇ element ⁇ (t) ⁇ comprising ⁇ a ⁇ nucleotide ⁇ sequence ⁇ which ⁇ is ⁇ essentially ⁇ comp
- the in-situ hybridization ⁇ multiplex ⁇ reaction ⁇ is ⁇ described ⁇ in ⁇ more ⁇ details ⁇ in ⁇ this ⁇ description, ⁇ however, ⁇ it ⁇ should ⁇ be ⁇ mentioned ⁇ in ⁇ a ⁇ first ⁇ overview, ⁇ that ⁇ the ⁇ monitoring ⁇ probe ⁇ of ⁇ the ⁇ present ⁇ RES-PA18-PCT ⁇ invention ⁇ is ⁇ designed ⁇ to ⁇ allow ⁇ the ⁇ monitoring ⁇ of ⁇ the ⁇ correct ⁇ in ⁇ situ hybridization ⁇ multiplex ⁇ reaction ⁇ by ⁇ being ⁇ part ⁇ of ⁇ the ⁇ reaction, ⁇ thereby ⁇ being ⁇ exposed ⁇ to ⁇ the ⁇ same ⁇ reactants ⁇ and ⁇ reactions ⁇ steps ⁇ as ⁇ used ⁇ in ⁇ the ⁇ in ⁇ situ hybridization ⁇ multiplex ⁇ reaction.
- In ⁇ one ⁇ embodiment ⁇ the ⁇ method/ ⁇ monitoring ⁇ probe comprises ⁇ a ⁇ set ⁇ of ⁇ monitoring ⁇ probes, ⁇ wherein ⁇ for ⁇ each ⁇ of ⁇ the ⁇ different ⁇ identifier ⁇ elements ⁇ (t) ⁇ of ⁇ the ⁇ decoding ⁇ elements the set
- the ⁇ disclosure ⁇ encompasses ⁇ a method, ⁇ wherein ⁇ the monitoring ⁇ probe as ⁇ disclosed ⁇ herein, ⁇ can ⁇ be ⁇ detected ⁇ by ⁇ a ⁇ signal ⁇ element ⁇ with ⁇ a ⁇ fluorophore ⁇ being ⁇ the ⁇ same ⁇ or ⁇ being ⁇ different ⁇ from ⁇ the ⁇ fluorophore ⁇ used ⁇ in ⁇ the ⁇ detection ⁇ of ⁇ the ⁇ target ⁇ nucleic ⁇ acid ⁇ sequence ⁇ that ⁇ permits ⁇ normalizing ⁇ the ⁇ signal ⁇ of ⁇ the ⁇ immobilized ⁇ monitoring ⁇ probe.
- the ⁇ delta ⁇ G ⁇ value ⁇ of ⁇ the ⁇ monitoring ⁇ probes is ⁇ adjusted ⁇ by ⁇ the ⁇ sequence ⁇ length ⁇ or ⁇ sequence ⁇ composition.
- ⁇ In ⁇ yet ⁇ a ⁇ further ⁇ embodiment ⁇ the ⁇ delta ⁇ G ⁇ value ⁇ of ⁇ the ⁇ monitoring ⁇ probes is ⁇ adjusted ⁇ by ⁇ using ⁇ modified ⁇ bases ⁇ which ⁇ have ⁇ higher ⁇ stability ⁇ than ⁇ standard ⁇ bases.
- temperature ⁇ fluctuation ⁇ can ⁇ be ⁇ read-out ⁇ by ⁇ specific ⁇ change ⁇ in ⁇ the ⁇ fluorescence ⁇ and/or ⁇ color ⁇ facilitated ⁇ by ⁇ the ⁇ direct ⁇ and/or ⁇ indirect ⁇ interaction ⁇ of ⁇ the ⁇ monitoring ⁇ probe ⁇ with ⁇ the signal ⁇ oligonucleotide.
- the ⁇ kit ⁇ according ⁇ is ⁇ adapted for ⁇ monitoring ⁇ a ⁇ tissue ⁇ sample ⁇ preparation.
- the control ⁇ slide ⁇ can ⁇ be ⁇ used for ⁇ assessing ⁇ in-situ ⁇ hybridization ⁇ instrument installations.
- the ⁇ present ⁇ disclosure pertains ⁇ to a ⁇ reagent ⁇ (monitoring ⁇ probe ⁇ or ⁇ monitoring ⁇ probe ⁇ set) ⁇ for ⁇ methods ⁇ and ⁇ kits ⁇ for ⁇ detection ⁇ of ⁇ a ⁇ polymorphic analyte ⁇ in ⁇ a ⁇ sample ⁇ by ⁇ specific ⁇ signal-encoding ⁇ of ⁇ said ⁇ analyte by ⁇ in-situ ⁇ hybridization.
- ⁇ the ⁇ detected ⁇ signal ⁇ may ⁇ label ⁇ a ⁇ gene ⁇ family, ⁇ a ⁇ single ⁇ gene, ⁇ a ⁇ specific ⁇ genetic ⁇ locus, ⁇ a ⁇ benign ⁇ or ⁇ malign ⁇ genetic ⁇ variation, ⁇ genetic ⁇ specificity ⁇ or ⁇ biomarker ⁇ in ⁇ a ⁇ cluster ⁇ of ⁇ patients, ⁇ a ⁇ virus-genome, ⁇ a ⁇ certain ⁇ subset ⁇ of ⁇ nucleic ⁇ acid ⁇ variation ⁇ (e.g. ⁇ a ⁇ group ⁇ of ⁇ SNPs, ⁇ a ⁇ mutation, ⁇ a ⁇ virus-variant, ⁇ a ⁇ gene-variant, ⁇ a ⁇ transcript, ⁇ isoforms, ⁇ splice-variants, ⁇ etc.).
- the ⁇ technology ⁇ allows ⁇ the ⁇ high-throughput ⁇ detection ⁇ of ⁇ nucleic ⁇ acids ⁇ with ⁇ variable ⁇ sequences ⁇ of ⁇ at ⁇ least ⁇ 60%, ⁇ at ⁇ least ⁇ 65%, ⁇ at ⁇ least ⁇
- this ⁇ disclosure ⁇ provides in ⁇ vitromethods for ⁇ diagnosis ⁇ of ⁇ a ⁇ disease ⁇ in ⁇ plants ⁇ selected ⁇ from ⁇ the ⁇ group ⁇ comprising: ⁇ diseases ⁇ caused ⁇ by ⁇ biotic ⁇ stress, ⁇ preferably ⁇ by ⁇ infectious ⁇ and/or ⁇ parasitic ⁇ origin, ⁇ or ⁇ diseases ⁇ caused ⁇ by ⁇ abiotic ⁇ stress, ⁇ preferably ⁇ caused ⁇ by ⁇ nutritional ⁇ deficiencies ⁇ and/or ⁇ unfavourable environment, ⁇ said ⁇ method ⁇ comprising ⁇ the ⁇ use ⁇ of ⁇ the ⁇ multiplex ⁇ method ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure.
- ⁇ this ⁇ disclosure ⁇ relates to ⁇ optical ⁇ multiplexing ⁇ systems ⁇ suitable ⁇ for ⁇ the ⁇ method ⁇ according ⁇ to ⁇ the present ⁇ disclosure, ⁇ comprising ⁇ at ⁇ least: - at ⁇ least ⁇ one ⁇ reaction ⁇ vessel ⁇ for ⁇ containing ⁇ the ⁇ kits ⁇ or ⁇ part ⁇ of ⁇ the ⁇ kits ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure; - a ⁇ detection ⁇ unit ⁇ comprising ⁇ a ⁇ microscope, ⁇ in ⁇ particular ⁇ a ⁇ fluorescence ⁇ microscope - a ⁇ camera - a ⁇ liquid ⁇ handling ⁇ device.
- ⁇ the ⁇ unique ⁇ tags are ⁇ design ⁇ as ⁇ follow: - No ⁇ cross-hybridization ⁇ between ⁇ all ⁇ oligonucleotides ⁇ of ⁇ the ⁇ process ⁇ (probes, ⁇ decoders, ⁇ readout), ⁇ so ⁇ that ⁇ all ⁇ tag ⁇ sequences ⁇ are ⁇ usable ⁇ together ⁇ (compatible) - No ⁇ cross-hybridization ⁇ between ⁇ connector ⁇ elements ⁇ (bridges) ⁇ of ⁇ different ⁇ unique ⁇ tags - Stability ⁇ of ⁇ hybridization ⁇ of ⁇ the ⁇ unique ⁇ tags ⁇ should ⁇ be ⁇ in ⁇ a ⁇ narrow ⁇ range: ⁇ as ⁇ stable ⁇ as ⁇ possible ⁇ (fast ⁇ hybridization, ⁇ i.e., short ⁇ cycle ⁇ times) ⁇ but ⁇ significantly ⁇ different ⁇ (in ⁇ this ⁇ case ⁇ less ⁇ stable) ⁇ than ⁇ the ⁇ primary ⁇ probe ⁇ (for ⁇ differential ⁇ denaturation, ⁇ without ⁇ removing ⁇ primary ⁇ probes).
- the ⁇ present ⁇ description ⁇ pertains ⁇ in ⁇ particular ⁇ to ⁇ the ⁇ usage ⁇ of ⁇ a ⁇ set ⁇ of ⁇ labeled ⁇ and ⁇ unlabeled ⁇ nucleic ⁇ acid ⁇ sequences ⁇ for ⁇ specific ⁇ quantitative ⁇ and/or ⁇ spatial ⁇ detection ⁇ of ⁇ different ⁇ analytes ⁇ in ⁇ parallel ⁇ via ⁇ specific ⁇ hybridization.
- the ⁇ so ⁇ called ⁇ “multi-decoders” ⁇ allows ⁇ the ⁇ recruiting ⁇ of ⁇ more ⁇ than ⁇ just ⁇ one ⁇ signal ⁇ oligonucleotide ⁇ and ⁇ therefore ⁇ can ⁇ generate ⁇ new ⁇ signal ⁇ types ⁇ by ⁇ utilizing ⁇ the ⁇ combination ⁇ of ⁇ two ⁇ or ⁇ more ⁇ different ⁇ signal-oligonucleotides ⁇ without ⁇ decreasing ⁇ the ⁇ brightness ⁇ of ⁇ the ⁇ signals.
- due ⁇ to ⁇ the ⁇ use ⁇ of ⁇ a ⁇ first ⁇ set ⁇ of ⁇ analyte-specific ⁇ probes ⁇ according ⁇ to ⁇ step ⁇ A1 i.e. ⁇ the ⁇ transcript ⁇ plexity ⁇ of ⁇ A1 ⁇ which ⁇ is ⁇ at ⁇ least ⁇ 10 ⁇ times ⁇ higher in ⁇ numbers than ⁇ the ⁇ number ⁇ of ⁇ probes
- Fig. ⁇ 2 Embodiment ⁇ where ⁇ the ⁇ analyte ⁇ is ⁇ a ⁇ protein, and ⁇ the ⁇ probe ⁇ set ⁇ comprises ⁇ proteins ⁇ (here: ⁇ antibodies) ⁇ specifically ⁇ binding ⁇ to ⁇ the ⁇ analyte. ⁇ The ⁇ probes ⁇ comprise ⁇ a ⁇ unique ⁇ identifier ⁇ sequence ⁇ allowing ⁇ hybridization ⁇ of ⁇ decoding ⁇ oligonucleotides.
- Fig. ⁇ 3 Flowchart ⁇ of ⁇ the ⁇ method ⁇ according ⁇ to ⁇ the ⁇ disclosure.
- Fig. ⁇ 4 Alternative ⁇ options ⁇ for ⁇ the ⁇ application ⁇ of ⁇ decoding ⁇ and ⁇ signal ⁇ oligonucleotides.
- Fig. ⁇ 5 Example ⁇ for ⁇ signal ⁇ encoding ⁇ of ⁇ three ⁇ different ⁇ nucleic ⁇ acid ⁇ sequences ⁇ by ⁇ two ⁇ different ⁇ signal ⁇ types ⁇ and ⁇ three ⁇ detection ⁇ rounds; ⁇ in ⁇ this ⁇ example, ⁇ the ⁇ encoding ⁇ scheme ⁇ includes ⁇ error ⁇ detection.
- Fig. ⁇ 6 Number ⁇ of ⁇ generated ⁇ code ⁇ words ⁇ (logarithmic ⁇ scale) ⁇ against ⁇ number ⁇ of ⁇ detection ⁇ cycles.
- Fig. ⁇ 7 Calculated ⁇ total ⁇ efficiency ⁇ of ⁇ a ⁇ 5-round ⁇ encoding ⁇ scheme ⁇ based ⁇ on ⁇ single ⁇ step ⁇ efficiencies.
- Fig. ⁇ 8 Comparison ⁇ of ⁇ relative ⁇ transcript ⁇ abundances ⁇ between ⁇ different ⁇ experiments.
- Fig. ⁇ 9 Correlation ⁇ of ⁇ relative ⁇ transcript ⁇ abundances ⁇ between ⁇ different ⁇ experiments.
- Fig. ⁇ 10 Comparison ⁇ of ⁇ intercellular ⁇ distribution ⁇ of ⁇ signals.
- Fig. ⁇ 11 Comparison ⁇ of ⁇ intracellular ⁇ distribution ⁇ of ⁇ signals.
- Fig. ⁇ 12 Distribution ⁇ pattern ⁇ of ⁇ different ⁇ cell ⁇ cycle ⁇ dependent ⁇ transcripts.
- the ⁇ number ⁇ of ⁇ codewords ⁇ for ⁇ merFISH ⁇ does ⁇ not ⁇ exponentially ⁇ increase ⁇ with ⁇ the ⁇ number ⁇ of ⁇ detection ⁇ cycles ⁇ but ⁇ gets ⁇ less ⁇ effective ⁇ with ⁇ each ⁇ added ⁇ round. ⁇ In ⁇ contrast, ⁇ the ⁇ number ⁇ of ⁇ codewords ⁇ for ⁇ intronSeqFISH, ⁇ the ⁇ method ⁇ of ⁇ the ⁇ present ⁇ disclosure ⁇ without ⁇ using ⁇ multi-decoders, ⁇ the method ⁇ with ⁇ multi-decoders ⁇ increases ⁇ exponentially. ⁇ The ⁇ slope ⁇ of ⁇ the ⁇ curve ⁇ for ⁇ the ⁇ method ⁇ using ⁇ multi-decoders ⁇ is ⁇ much ⁇ higher ⁇ than ⁇ that ⁇ of ⁇ the ⁇ prior ⁇ invention, ⁇ leading ⁇ to ⁇ more ⁇ than ⁇ 20 ⁇ 000 ⁇ 000 ⁇ times ⁇ more ⁇ code ⁇ words ⁇ usable ⁇ after ⁇ 20 ⁇ rounds ⁇ of ⁇ detection.
- Fig. ⁇ 19 ⁇ Visual ⁇ representation ⁇ of ⁇ mRNA ⁇ and ⁇ control ⁇ particle.
- Fig ⁇ 20 ⁇ Particle ⁇ attachment ⁇ to ⁇ microscope ⁇ slights.
- Fig. ⁇ 21 ⁇ Assay ⁇ for ⁇ parameter ⁇ optimization.
- Fig. ⁇ 22 ⁇ Example ⁇ for ⁇ the ⁇ use ⁇ of ⁇ ZEN’s ⁇ DFIs.
- Fig. ⁇ 23 ⁇ Results ⁇ of ⁇ MC ⁇ Run ⁇ of ⁇ 1-plex ⁇ particle
- Fig. ⁇ 24 ⁇ Results ⁇ of ⁇ MC ⁇ Run ⁇ of ⁇ 1-plex ⁇ particle, ⁇ 6-plex ⁇ particle, ⁇ 12-plex ⁇ particle
- Fig. ⁇ 25 ⁇ MC ⁇ Run ⁇ of ⁇ 19-plex ⁇ particles
- Fig.26 ⁇ Embodiments ⁇ of ⁇ the ⁇ monitoring ⁇ probe ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure. ⁇ A) ⁇ Monitoring ⁇ probes ⁇ (1) ⁇ attached ⁇ to ⁇ a ⁇ particle ⁇ (3) ⁇ like ⁇ a ⁇ magnetic ⁇ bead, ⁇ which ⁇ is ⁇ immobilized ⁇ to ⁇ a ⁇ slide ⁇ surface ⁇ (2). ⁇ On ⁇ the ⁇ right ⁇ a ⁇ tissue ⁇ sample ⁇ (4) ⁇ is ⁇ place ⁇ on ⁇ top ⁇ of ⁇ the ⁇ particles. ⁇ B) ⁇ shows ⁇ a ⁇ specific ⁇ embodiment ⁇ of ⁇ the ⁇ particle, ⁇ wherein ⁇ the ⁇ monitoring ⁇ pro
- D) ⁇ shows ⁇ a ⁇ specific ⁇ embodiment ⁇ of ⁇ the ⁇ particle, ⁇ wherein ⁇ the ⁇ monitoring ⁇ probe ⁇ comprises ⁇ a ⁇ target ⁇ nucleic ⁇ acid ⁇ sequence ⁇ (1c) ⁇ allowing ⁇ the ⁇ binding/hybridization ⁇ of ⁇ a ⁇ binding ⁇ element ⁇ (7).
- ⁇ the ⁇ present ⁇ disclosure ⁇ pertains ⁇ to ⁇ oligo ⁇ attached ⁇ beads ⁇ (monitoring ⁇ probes) ⁇ and ⁇ uses ⁇ thereof ⁇ to ⁇ create ⁇ ground ⁇ truth.
- Altered ⁇ delta ⁇ G ⁇ values ⁇ can ⁇ be ⁇ accomplished ⁇ by ⁇ selecting ⁇ the ⁇ base ⁇ composition ⁇ of ⁇ the ⁇ sequence, ⁇ altering ⁇
- ⁇ customer ⁇ samples ⁇ can ⁇ be ⁇ applied ⁇ directly ⁇ to ⁇ slides ⁇ containing ⁇ attached ⁇ control ⁇ beads.
- ⁇ In ⁇ these ⁇ cases, ⁇ the ⁇ control ⁇ bead ⁇ will: 1. Serve ⁇ as ⁇ an ⁇ internal ⁇ control ⁇ to ⁇ monitor ⁇ the ⁇ entire ⁇ workflow ⁇ used ⁇ by ⁇ the ⁇ customer ⁇ in ⁇ running ⁇ their ⁇ sample. 2. Monitor ⁇ the ⁇ efficiency ⁇ of ⁇ the ⁇ tissue ⁇ preparation ⁇ process ⁇ in ⁇ permeabilizing ⁇ the ⁇ tissue ⁇ sufficiently ⁇ to ⁇ allow ⁇ diffusion ⁇ of ⁇ the ⁇ assay ⁇ oligonucleotides ⁇ into ⁇ and ⁇ through ⁇ the ⁇ tissues.
- the ⁇ present ⁇ disclosure ⁇ also ⁇ describes ⁇ the ⁇ usage ⁇ of ⁇ at ⁇ least ⁇ one set ⁇ of ⁇ nucleic ⁇ acid ⁇ sequences ⁇ for ⁇ specific ⁇ quantitative ⁇ and/or ⁇ spatial ⁇ detection ⁇ of ⁇ different ⁇ analytes ⁇ in ⁇ parallel ⁇ via ⁇ specific ⁇ hybridization.
- the ⁇ technology allows ⁇ the ⁇ discrimination ⁇ of ⁇ more ⁇ different ⁇ analytes ⁇ than ⁇ different ⁇ detection ⁇ signals ⁇ are ⁇ available.
- the ⁇ discrimination ⁇ may ⁇ be ⁇ realized ⁇ via ⁇ sequential ⁇ signal-coding ⁇ of ⁇ the ⁇ analytes ⁇ achieved ⁇ by ⁇ several ⁇ cycles ⁇ of ⁇ specific ⁇ hybridization, ⁇ detection ⁇ of ⁇ signals ⁇ and ⁇ selective ⁇ elution ⁇ of ⁇ the ⁇ hybridized ⁇ nucleic ⁇ acid ⁇ sequences.
- an ⁇ “slide” ⁇ is ⁇ any ⁇ surface ⁇ which ⁇ can ⁇ be ⁇ used ⁇ for ⁇ in-situ ⁇ hybridization. ⁇ In ⁇ some ⁇ embodiments ⁇ the ⁇ slide ⁇ is ⁇ a ⁇ microscope ⁇ slide, ⁇ in ⁇ some ⁇ embodiments ⁇ made ⁇ out ⁇ of ⁇ glass.
- thee ⁇ cell ⁇ is ⁇ a ⁇ prokaryotic ⁇ cells ⁇ or ⁇ a ⁇ eukaryotic ⁇ cell, ⁇ in ⁇ particular ⁇ a ⁇ mammalian ⁇ cell, ⁇ in ⁇ particular ⁇ a ⁇ human ⁇ cell.
- the ⁇ biological ⁇ tissue, ⁇ biological ⁇ cells, ⁇ extracts ⁇ and/or ⁇ part ⁇ of ⁇ cells ⁇ are ⁇ fixed.
- In ⁇ particular, ⁇ the ⁇ analytes ⁇ are ⁇ fixed ⁇ in ⁇ a ⁇ permeabilized ⁇ sample, ⁇ such ⁇ as ⁇ a ⁇ cell-containing ⁇ sample.
- an ⁇ "oligonucleotide ⁇ as ⁇ used ⁇ herein, ⁇ refers ⁇ to ⁇ s ⁇ short ⁇ nucleic ⁇ acid ⁇ molecule, ⁇ such ⁇ as ⁇ DNA, ⁇ PNA, ⁇ LNA ⁇ or ⁇ RNA.
- the ⁇ length ⁇ of ⁇ the ⁇ oligonucleotides ⁇ is ⁇ within ⁇ the ⁇ range ⁇ 4-200 ⁇ nucleotides ⁇ (nt), ⁇ preferably ⁇ 6-80 ⁇ nt, ⁇ more ⁇ preferably ⁇ 8-60 ⁇ nt, ⁇ more ⁇ preferably ⁇ 10-50 ⁇ nt, ⁇ more ⁇ preferably ⁇ 12 ⁇ to ⁇ 35 ⁇ depending ⁇ on ⁇ the ⁇ number ⁇ of ⁇ consecutive ⁇ sequence ⁇ elements.
- the ⁇ oligonucleotides ⁇ may ⁇ be ⁇ linear ⁇ or ⁇ may ⁇ comprise ⁇ hairpin ⁇ or ⁇ loop ⁇ structures.
- the ⁇ oligonucleotides ⁇ may ⁇ comprise ⁇
- the ⁇ "analyte-specific ⁇ probe" ⁇ consists ⁇ of ⁇ at ⁇ least ⁇ one, ⁇ preferably ⁇ at ⁇ least ⁇ two ⁇ elements, ⁇ namely ⁇ the ⁇ so-called ⁇ binding ⁇ element ⁇ (S) ⁇ which ⁇ specifically ⁇ interacts ⁇ with ⁇ one ⁇ of ⁇ the ⁇ analytes, ⁇ and ⁇ a ⁇ so-called ⁇ identifier ⁇ element ⁇ (T) ⁇ comprising ⁇ the ⁇ 'unique ⁇ identifier ⁇ sequence'.
- the ⁇ binding ⁇ element ⁇ (S) ⁇ may ⁇ be ⁇ a ⁇ nucleic ⁇ acid ⁇ such ⁇ as ⁇ a ⁇ hybridization ⁇ sequence ⁇ or ⁇ an ⁇ aptamer, ⁇ or ⁇ a ⁇ peptidic ⁇ structure ⁇ such ⁇ as ⁇ an ⁇ antibody.
- the ⁇ “monitoring ⁇ probe” ⁇ consists ⁇ of ⁇ at ⁇ least ⁇ one ⁇ element, ⁇ namely ⁇ the ⁇ so-called ⁇ identifier ⁇ element ⁇ (T) ⁇ comprising ⁇ the ⁇ 'unique ⁇ identifier ⁇ sequence'.
- the ⁇ monitoring ⁇ probe ⁇ is ⁇ attached ⁇ to ⁇ a ⁇ surface, ⁇ selected ⁇ from ⁇ a ⁇ particle ⁇ (e.g., ⁇ a ⁇ magnetic ⁇ or ⁇ nonmagnetic ⁇ bead), ⁇ a ⁇ functional ⁇ group ⁇ (e.g., streptavidin, ⁇ biotin, ⁇ a ⁇ hybridization ⁇ sequence ⁇ or ⁇ an ⁇ aptamer, ⁇ or ⁇ a ⁇ peptidic ⁇ structure ⁇ such ⁇ as ⁇ an ⁇ antibody) ⁇ and ⁇ a ⁇ surface ⁇ (e.g., ⁇ a ⁇ slide), ⁇ as ⁇ well ⁇ as ⁇ any ⁇ combination ⁇ thereof.
- the ⁇ monitoring ⁇ probe ⁇ may ⁇ also ⁇ comprise ⁇ a ⁇ so-called ⁇ binding
- the ⁇ "unique ⁇ identifier ⁇ sequence" ⁇ as ⁇ comprised ⁇ by ⁇ the ⁇ analyte-specific ⁇ probe ⁇ and ⁇ the ⁇ monitoring ⁇ probe ⁇ is ⁇ unique ⁇ in ⁇ its ⁇ sequence ⁇ compared ⁇ to ⁇ other ⁇ unique ⁇ identifiers.
- "Unique" ⁇ in ⁇ this ⁇ context ⁇ means ⁇ that ⁇ it ⁇ specifically ⁇ identifies ⁇ only ⁇ one ⁇ analyte, ⁇ such ⁇ as ⁇ Cyclin ⁇ A, ⁇ Cyclin ⁇ D, ⁇ Cyclin ⁇ E ⁇ etc., ⁇ or, ⁇ alternatively, ⁇ it ⁇ specifically ⁇ identifies ⁇ only ⁇ a ⁇ group ⁇ of ⁇ analytes, ⁇ independently ⁇ whether ⁇ the ⁇ group ⁇ of ⁇ analytes ⁇ comprises ⁇ a ⁇ gene ⁇ family ⁇ or ⁇ not. ⁇ Therefore, ⁇ the ⁇ analyte ⁇ or ⁇ a ⁇ group ⁇ of ⁇ analytes ⁇ to ⁇ be ⁇ encoded ⁇ by ⁇ this ⁇ unique ⁇ identifier ⁇ can ⁇ be ⁇ distinguished ⁇ from ⁇
- a ⁇ "decoding ⁇ oligonucleotide” ⁇ or ⁇ an ⁇ “adapter” ⁇ or ⁇ a ⁇ /adapter ⁇ segment” ⁇ consists ⁇ of ⁇ at ⁇ least ⁇ one, ⁇ preferably ⁇ at ⁇ least ⁇ two ⁇ sequence ⁇ elements. ⁇ One ⁇ sequence ⁇ element ⁇ that ⁇ can ⁇ specifically ⁇ bind ⁇ to ⁇ a ⁇ unique ⁇ identifier ⁇ sequence, ⁇ referred ⁇ to ⁇ as an ⁇ “identifier ⁇ connector ⁇ element ⁇ “(t) ⁇ or "first ⁇ connector ⁇ element” ⁇ (t), ⁇ and ⁇ a ⁇ second ⁇ sequence ⁇ element ⁇ specifically ⁇ binding ⁇ to ⁇ a ⁇ signal ⁇ oligonucleotide, ⁇ referred ⁇ to ⁇ as ⁇ "translator ⁇ element” ⁇ (c). ⁇ The ⁇ length ⁇ of ⁇ the ⁇ sequence ⁇ elements ⁇ is ⁇ within ⁇ the ⁇ range ⁇ 8- 60 ⁇ nt, ⁇ preferably ⁇ 12-40 ⁇ nt, ⁇ more ⁇ preferably ⁇ 14-20 ⁇ nt, ⁇ depending ⁇ on ⁇ the
- ⁇ the ⁇ decoding ⁇ oligonucleotide ⁇ in ⁇ the ⁇ kits ⁇ and/or ⁇ methods ⁇ of ⁇ the ⁇ present ⁇ disclosure ⁇ may ⁇ be ⁇ a ⁇ “multi-decoder”.
- ⁇ the ⁇ decoding ⁇ oligonucleotide ⁇ is ⁇ a ⁇ multi-decoder ⁇ comprising ⁇ - an ⁇ identifier ⁇ connector ⁇ element ⁇ (t) ⁇ comprising ⁇ a ⁇ nucleotide ⁇ sequence ⁇ which ⁇ is ⁇ essentially ⁇ complementary ⁇ to ⁇ at ⁇ least ⁇ a ⁇ section ⁇ of ⁇ the ⁇ unique ⁇ identifier ⁇ sequence ⁇ of ⁇ the ⁇ identifier ⁇ element ⁇ (T) ⁇ of ⁇ the ⁇ corresponding ⁇ analyte-specific ⁇ probe ⁇ set, ⁇ and - at ⁇ least ⁇ one, ⁇ preferably ⁇ at ⁇ least ⁇ two translator ⁇ elements ⁇ (c) ⁇ comprising ⁇ each ⁇ a ⁇ nucleotide ⁇ sequence ⁇ allowing ⁇ a ⁇ specific ⁇ hybridization ⁇ of ⁇ a ⁇ different ⁇ signal ⁇ oligonucleotide.
- ⁇ the ⁇ first ⁇ translator ⁇ element ⁇ binds ⁇ a ⁇ different ⁇ signal ⁇ oligonucleotide ⁇ as ⁇ the ⁇ second ⁇ translator ⁇ element.
- ⁇ the ⁇ signal ⁇ oligonucleotides ⁇ differ ⁇ in ⁇ the ⁇ signal ⁇ element ⁇ comprised ⁇ in ⁇ the ⁇ signal ⁇ oligonucleotide, ⁇ e.g. ⁇ in ⁇ the ⁇ kind ⁇ of ⁇ the ⁇ fluorophore.
- In ⁇ a ⁇ monitoring ⁇ probe ⁇ set ⁇ the ⁇ monitoring ⁇ probes ⁇ are ⁇ identical ⁇ in ⁇ the ⁇ binding ⁇ element ⁇ (S) ⁇ but ⁇ may ⁇ comprise ⁇ a ⁇ different ⁇ identifier ⁇ element ⁇ (T) ⁇ for ⁇ specifically ⁇ interacting ⁇ with ⁇ the ⁇ surface ⁇ on ⁇ which ⁇ they ⁇ are ⁇ immobilized, ⁇ but ⁇ for ⁇ specifically ⁇ interacting ⁇ with ⁇ different ⁇ decoding ⁇ elements.
- “Selective ⁇ denaturation” may ⁇ be ⁇ the ⁇ process ⁇ of ⁇ eliminating ⁇ bound ⁇ decoding ⁇ oligonucleotides ⁇ and ⁇ signal ⁇ oligonucleotides ⁇ with ⁇ highest ⁇ efficiency ⁇ while ⁇ at ⁇ the ⁇ same ⁇ time ⁇ the ⁇ target ⁇ specific ⁇ probes ⁇ have ⁇ to ⁇ stay ⁇ hybridized ⁇ with ⁇ the ⁇ highest ⁇ efficiency.
- the ⁇ total ⁇ efficiency ⁇ of ⁇ these ⁇ two ⁇ combined ⁇ events ⁇ may ⁇ to ⁇ be ⁇ at ⁇ least ⁇ 0.22 ⁇ for ⁇ two ⁇ detection ⁇ cycles, ⁇ 0.37 ⁇ for ⁇ three ⁇ detection ⁇ cycles, ⁇ 0.47 ⁇ for ⁇ four ⁇ detection ⁇ cycles, ⁇ 0.55 ⁇ for ⁇ five ⁇ detection ⁇ cycles, ⁇ 0.61 ⁇ for ⁇ six ⁇ detection ⁇ cycles, ⁇ 0.65 ⁇ for ⁇ seven ⁇ detection ⁇ cycles, ⁇ 0.69 ⁇ for ⁇ eight ⁇ detection ⁇ cycles, ⁇ 0.72 ⁇ for ⁇ nine ⁇ det
- a ⁇ single ⁇ set refers ⁇ to ⁇ a ⁇ plurality ⁇ of ⁇ oligonucleotides.
- An ⁇ "analyte ⁇ specific ⁇ probe ⁇ set" refers ⁇ to ⁇ a ⁇ plurality ⁇ of ⁇ moieties ⁇ or ⁇ sub-jects, ⁇ e.g., analyte-specific ⁇ probes ⁇ that ⁇ are ⁇ different ⁇ from ⁇ each ⁇ other ⁇ and ⁇ bind ⁇ to ⁇ independent ⁇ regions ⁇ of ⁇ the ⁇ analyte.
- a "decoding ⁇ oligonucleotide ⁇ set” refers ⁇ to ⁇ a ⁇ plurality ⁇ of ⁇ decoding ⁇ oligonucleotides ⁇ specific ⁇ for ⁇ a ⁇ certain ⁇ unique ⁇ identifier ⁇ needed ⁇ to ⁇ realize ⁇ the ⁇ encoding ⁇ independent ⁇ of ⁇ the ⁇ length ⁇ of ⁇ the ⁇ code ⁇ word. ⁇ Each ⁇ and ⁇ all ⁇ of ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ included ⁇ in a ⁇ "decoding ⁇ oligonucleotide ⁇ set” ⁇ bind ⁇ to ⁇ the ⁇ same ⁇ unique ⁇ identifier ⁇ element ⁇ (T) ⁇ of ⁇ the ⁇ analyte-specific ⁇ probe.
- the ⁇ codewords ⁇ for ⁇ each ⁇ analyte may ⁇ be ⁇ assigned ⁇ sequentially, ⁇ or ⁇ may ⁇ be ⁇ assigned ⁇ at ⁇ random. ⁇ For ⁇ instance, ⁇ a ⁇ first ⁇ analytemay ⁇ be ⁇ assigned ⁇ to ⁇ 101, ⁇ while ⁇ a ⁇ second ⁇ nucleic ⁇ acid ⁇ target ⁇ may ⁇ be ⁇ assigned ⁇ to ⁇ 110. ⁇
- ⁇ the ⁇ codewords ⁇ may ⁇ be ⁇ assigned ⁇ using ⁇ an ⁇ error- detection ⁇ system ⁇ or ⁇ an ⁇ error- correcting ⁇ system, ⁇ such ⁇ as a ⁇ Hamming ⁇ system, ⁇ a ⁇ Golay ⁇ code, ⁇ or ⁇ an ⁇ extended ⁇ Hamming ⁇ system ⁇ (or ⁇ a ⁇ SECDED ⁇ system, ⁇ i.e., ⁇ single ⁇ error ⁇ correction, ⁇ double ⁇ error ⁇ detection).
- an ⁇ error- detection ⁇ system ⁇ or ⁇ an ⁇ error- correcting ⁇ system such ⁇ as a ⁇ Hamming ⁇ system, ⁇ a ⁇ Golay ⁇ code, ⁇ or ⁇
- Essentially ⁇ complementary ⁇ means, ⁇ when ⁇ referring ⁇ to ⁇ two ⁇ nucleotide ⁇ sequences, ⁇ that ⁇ both ⁇ sequences ⁇ can ⁇ specifically ⁇ hybridize ⁇ to ⁇ each ⁇ other ⁇ under ⁇ stringent ⁇ conditions, ⁇ thereby ⁇ forming ⁇ a ⁇ hybrid ⁇ nucleic ⁇ acid ⁇ molecule ⁇ with ⁇ a ⁇ sense ⁇ and ⁇ an ⁇ antisense ⁇ strand ⁇ connected ⁇ to ⁇ each ⁇ other ⁇ via ⁇ hydrogen ⁇ bonds ⁇ (Watson-and-Crick ⁇ base ⁇ pairs).
- ⁇ essentially ⁇ complementary ⁇ includes ⁇ not ⁇ only ⁇ perfect ⁇ base-pairing ⁇ along ⁇ the ⁇ entire ⁇ strands, ⁇ i.e., perfect ⁇ complementary ⁇ sequences ⁇ but ⁇ also ⁇ imperfect ⁇ complementary ⁇ sequences ⁇ which, ⁇ however, ⁇ still ⁇ have ⁇ the ⁇ capability ⁇ to ⁇ hybridize ⁇ to ⁇ each ⁇ other ⁇ under ⁇ stringent ⁇ conditions.
- the ⁇ decoding ⁇ oligonucleotides ⁇ of ⁇ a ⁇ particular ⁇ set ⁇ differ ⁇ from ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ of ⁇ another ⁇ set. ⁇ This ⁇ means, ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ of ⁇ set ⁇ 1 ⁇ bind ⁇ to ⁇ the ⁇ analyte-specific ⁇ probes ⁇ of ⁇ above ⁇ set ⁇ 1 ⁇ of ⁇ analyte-specific ⁇ probes, ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ of ⁇ set ⁇ 2 ⁇ binds ⁇ to ⁇ the ⁇ analyte-specific ⁇ probes ⁇ of ⁇ above ⁇ set ⁇ 2 ⁇ of ⁇ analyte-specific ⁇ probes, ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ of ⁇ set ⁇ 3 ⁇ bind ⁇ to ⁇ the ⁇ analyte-specific ⁇ probes ⁇ of ⁇ above ⁇ set ⁇ 3 ⁇ of ⁇ analyte-specific ⁇ probes, ⁇ etc. ⁇ It ⁇ is ⁇ also ⁇ understood ⁇ that
- the ⁇ decoding ⁇ oligonucleotides ⁇ of ⁇ a ⁇ particular ⁇ set ⁇ differ ⁇ from ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ of ⁇ another ⁇ set.
- the ⁇ term ⁇ "quencher” ⁇ or ⁇ "quencher ⁇ dye” ⁇ or ⁇ "quencher ⁇ molecule refers ⁇ to ⁇ a ⁇ dye ⁇ or ⁇ an ⁇ equivalent ⁇ molecule, ⁇ such ⁇ as ⁇ nucleoside ⁇ guanosine ⁇ (G) ⁇ or ⁇ 2'-deoxyguanosine ⁇ (dG), ⁇ which ⁇ is ⁇ capable ⁇ of ⁇ reducing ⁇ the ⁇ fluorescence ⁇ of ⁇ a ⁇ fluorescent ⁇ reporter ⁇ dye ⁇ or ⁇ donor ⁇ dye.
- the ⁇ quencher ⁇ is ⁇ a ⁇ fluorescent ⁇ dye ⁇ its ⁇ fluorescence ⁇ wavelength ⁇ is ⁇ typically ⁇ substantially ⁇ different ⁇ from ⁇ that ⁇ of ⁇ the ⁇ reporter ⁇ dye ⁇ and ⁇ the ⁇ quencher ⁇ fluorescence ⁇ is ⁇ usually ⁇ not ⁇ monitored ⁇ during ⁇ an ⁇ assay. ⁇
- the ⁇ method ⁇ is ⁇ particularly ⁇ qualified ⁇ to ⁇ monitor, ⁇ encode, ⁇ identify, ⁇ detect, ⁇ count, or ⁇ quantify ⁇ the ⁇ in ⁇ situ ⁇ analysis ⁇ of ⁇ analytes ⁇ or ⁇ single ⁇ analyte ⁇ molecules ⁇ in ⁇ a ⁇ biological ⁇ sample, ⁇ i.e., such ⁇ as ⁇ a ⁇ sample ⁇ which ⁇ contains ⁇ nucleic ⁇ acids ⁇ or ⁇ proteins ⁇ as ⁇ said ⁇ analytes.
- the ⁇ biological ⁇ sample may ⁇ be ⁇ in ⁇ a ⁇ form ⁇ as ⁇ it ⁇ is ⁇ in ⁇ its ⁇ natural ⁇ environment ⁇ (i.e., liquid, ⁇ semi-liquid, ⁇ solid ⁇ etc.), ⁇ or ⁇ processed, ⁇ e.g., as ⁇ a ⁇ dried ⁇ film ⁇ on ⁇ the ⁇ surface ⁇ of ⁇ a ⁇ device ⁇ which ⁇ may ⁇ be ⁇ re-liquefied ⁇ before ⁇ the ⁇ method ⁇ is ⁇ carried ⁇ out. ⁇ In ⁇ another ⁇ embodiment ⁇ of ⁇ the ⁇
- ⁇ in ⁇ some ⁇ embodiments, ⁇ the ⁇ cell ⁇ and/or ⁇ the ⁇ tissue ⁇ is ⁇ fixed ⁇ prior ⁇ to ⁇ introducing ⁇ the ⁇ probes, ⁇ e.g., ⁇ to ⁇ preserve ⁇ the ⁇ positions ⁇ of ⁇ the ⁇ analytes ⁇ like ⁇ nucleic ⁇ acids ⁇ within ⁇ the ⁇ cell.
- ⁇ a ⁇ cell ⁇ may ⁇ be ⁇ fixed ⁇ using ⁇ chemicals ⁇ such ⁇ as ⁇ formaldehyde, ⁇ paraformaldehyde, ⁇ glutaraldehyde, ⁇ ethanol, ⁇ methanol, ⁇ acetone, ⁇ acetic ⁇ acid, ⁇ or ⁇ the ⁇ like.
- This ⁇ measure ⁇ has ⁇ the ⁇ advantage ⁇ that ⁇ the ⁇ analytes ⁇ to ⁇ be ⁇ encoded, ⁇ e.g., the ⁇ nuclei ⁇ acids ⁇ or ⁇ proteins, ⁇ are ⁇ immobilized ⁇ and ⁇ cannot ⁇ escape. ⁇ In ⁇ doing ⁇ so, ⁇ the ⁇ analytes ⁇ then ⁇ prepared ⁇ for ⁇ a ⁇ better ⁇ detection ⁇ or ⁇ encoding ⁇ by ⁇ the ⁇ method ⁇ according ⁇ to ⁇ the ⁇ disclosure. ⁇ In ⁇ yet ⁇ a ⁇ further ⁇ embodiment ⁇ within ⁇ the ⁇ set ⁇ of ⁇ analyte-specific ⁇ probes ⁇ the ⁇ individual ⁇ analyte- specific ⁇ probes ⁇ comprise ⁇ binding ⁇ elements ⁇ (S1, ⁇ S2, ⁇ S3, ⁇ S4, ⁇ S5) ⁇ which ⁇ specifically ⁇ interact ⁇ with ⁇ different ⁇ sub-structures ⁇ of ⁇ one ⁇ of ⁇ the ⁇ analytes ⁇ to ⁇ be ⁇ encoded.
- the ⁇ present ⁇ disclosure ⁇ pertains ⁇ to ⁇ kit ⁇ for ⁇ multiplex ⁇ analyte ⁇ encoding, ⁇ comprising: (A1) at ⁇ least ⁇ a ⁇ first ⁇ set of ⁇ analyte-specific ⁇ probes ⁇ for ⁇ encoding ⁇ different ⁇ analytes, ⁇ each ⁇ set ⁇ of ⁇ analyte-specific ⁇ probes ⁇ interacting ⁇ with ⁇ a ⁇ different ⁇ analyte, ⁇ wherein ⁇ if ⁇ the ⁇ analyte ⁇ is ⁇ a ⁇ nucleic ⁇ acid ⁇ each ⁇ set ⁇ of ⁇ analyte-specific ⁇ probes ⁇ comprises ⁇ analyte-specific ⁇ probes ⁇ which ⁇ specifically ⁇ interact ⁇ with ⁇ different ⁇ sub-structures ⁇ of ⁇ the ⁇ same ⁇ analyte, ⁇ each ⁇ analyte- specific ⁇ probe ⁇ comprising ⁇ (aa) ⁇ a ⁇ binding ⁇ element ⁇ (S) ⁇ that ⁇ specifically ⁇ interacts ⁇ with ⁇ one ⁇ of ⁇ the ⁇ different ⁇
- RES-PA18-PCT ⁇ A ⁇ multiplex ⁇ method ⁇ or ⁇ assay ⁇ allow ⁇ the ⁇ simultaneously ⁇ measurement ⁇ of ⁇ multiple ⁇ analytes ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure it ⁇ may ⁇ be ⁇ used ⁇ to ⁇ determine ⁇ the ⁇ presence ⁇ or ⁇ absence ⁇ of ⁇ a ⁇ plurality ⁇ of ⁇ predetermined ⁇ (known) ⁇ analytes ⁇ like ⁇ nucleic ⁇ acid ⁇ target ⁇ sequences ⁇ in ⁇ a ⁇ sample. ⁇ An analyte ⁇ may ⁇ be “predetermined” ⁇ in ⁇ that ⁇ its ⁇ sequence ⁇ is known ⁇ to ⁇ design ⁇ a ⁇ probe ⁇ that ⁇ binds ⁇ to ⁇ the that ⁇ target.
- the ⁇ unique ⁇ tag ⁇ can ⁇ be ⁇ identified ⁇ by ⁇ various ⁇ techniques, ⁇ including ⁇ hybridization, ⁇ e.g., with ⁇ labelled probes, ⁇ directly ⁇ or ⁇ indirectly ⁇ or ⁇ by ⁇ sequencing ⁇ (by ⁇ synthesis, ⁇ ligation).
- the ⁇ kit ⁇ does ⁇ not ⁇ comprise ⁇ sets ⁇ of ⁇ analyte-specific ⁇ probes ⁇ as ⁇ defined ⁇ under ⁇ item ⁇ A1) and ⁇ A2).
- ⁇ if ⁇ the ⁇ analyte ⁇ in ⁇ the ⁇ kits ⁇ or ⁇ methods ⁇ according ⁇ to ⁇ the ⁇ present disclosure is ⁇ a ⁇ nucleic ⁇ acid
- ⁇ the ⁇ present ⁇ disclosure is ⁇ generally ⁇ directed ⁇ to ⁇ a ⁇ methods ⁇ including ⁇ acts ⁇ of ⁇ exposing ⁇ a ⁇ sample ⁇ to ⁇ a ⁇ plurality ⁇ of ⁇ analyte-specific ⁇ probes; ⁇ for ⁇ each ⁇ of ⁇ the ⁇ analyte-specific ⁇ probes, ⁇ determining ⁇ binding ⁇ of ⁇ the ⁇ analyte-specific ⁇ probes ⁇ within ⁇ the ⁇ sample; ⁇ creating ⁇ codewords ⁇ based ⁇ on ⁇ the binding ⁇ of ⁇ the ⁇ analyte-specific ⁇ probes, ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ and ⁇ the ⁇ signal ⁇ oligonucleotides; ⁇ and ⁇ for ⁇ at ⁇ least ⁇ some ⁇ of ⁇ the ⁇ codewords, ⁇ matching ⁇ the ⁇ codeword ⁇ to ⁇ a ⁇ valid ⁇ codeword.
- To ⁇ create ⁇ such ⁇ a ⁇ zero ⁇ (0) ⁇ in ⁇ a ⁇ codeword ⁇ for ⁇ an ⁇ individual ⁇ analyte ⁇ the ⁇ kit ⁇ may ⁇ comprise: ⁇ (D) at ⁇ least ⁇ a ⁇ set ⁇ of ⁇ non-signal ⁇ decoding ⁇ oligonucleotides ⁇ for ⁇ binding ⁇ to ⁇ a ⁇ particular ⁇ identifier ⁇ element ⁇ (T) ⁇ of ⁇ analyte-specific ⁇ probes, ⁇ wherein ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ in ⁇ the ⁇ same ⁇ set ⁇ of ⁇ non-signal ⁇ decoding ⁇ oligonucleotides ⁇ interacting ⁇ with ⁇ the ⁇ same ⁇ different ⁇ identifier ⁇ element ⁇ (T), wherein ⁇ each ⁇ non-signal ⁇ decoding ⁇ oligonucleotide ⁇ comprises ⁇ an ⁇ identifier ⁇ connector ⁇ e
- ⁇ the ⁇ different ⁇ sets ⁇ of ⁇ decoding ⁇ oligonucleotides ⁇ may ⁇ be ⁇ comprised ⁇ in ⁇ a ⁇ pre-mixture ⁇ of ⁇ different ⁇ sets ⁇ of ⁇ decoding ⁇ oligonucleotides ⁇ or ⁇ exist ⁇ separately.
- ⁇ the ⁇ different ⁇ sets ⁇ of ⁇ analyte-specific ⁇ probes ⁇ may ⁇ be ⁇ comprised ⁇ in ⁇ a ⁇ pre-mixture ⁇ of ⁇ different ⁇ sets ⁇ of ⁇ analyte-specific ⁇ probes ⁇ or ⁇ exist ⁇ separately.
- As ⁇ mentioned ⁇ above ⁇ the ⁇ analyte ⁇ to ⁇ be ⁇ encoded ⁇ may ⁇ be a ⁇ nucleic ⁇ acid, ⁇ preferably ⁇ DNA, ⁇ PNA ⁇ or ⁇ RNA, ⁇ in ⁇ particular mRNA, ⁇ a peptide, ⁇ polypeptide, ⁇ a ⁇ protein, ⁇ and/or ⁇ mixures thereof.
- the binding ⁇ element ⁇ (S) ⁇ may ⁇ comprise ⁇ moieties ⁇ which ⁇ are ⁇ affinity ⁇ moieties ⁇ from ⁇ affinity ⁇ substances ⁇ or ⁇ affinity ⁇ substances ⁇ in ⁇ their ⁇ entirety ⁇ selected ⁇ from ⁇ the ⁇ group ⁇ consisting ⁇ of ⁇ antibodies, ⁇ antibody ⁇ fragments, ⁇ anticalin ⁇ proteins, ⁇ receptor ⁇ ligands, enzyme ⁇ substrates, ⁇ lectins, ⁇ cytokines, ⁇ lymphokines, ⁇ interleukins, ⁇ angiogenic ⁇ or ⁇ virulence ⁇ factors, ⁇ allergens, ⁇ peptidic ⁇ allergens, ⁇ recombinant ⁇ allergens, ⁇ allergen-idiotypical ⁇ antibodies, ⁇ autoimmune-provoking ⁇ structures, ⁇ tissue-rejection-inducing ⁇ structures, ⁇ immunoglobulin ⁇ constant ⁇ regions ⁇ and ⁇ combinations ⁇ thereof.
- ⁇ the ⁇ binding ⁇ element ⁇ (S) ⁇ may ⁇ comprise ⁇ or ⁇ is ⁇ an ⁇ antibody ⁇ or ⁇ an ⁇ antibody ⁇ fragment ⁇ selected ⁇ from ⁇ the ⁇ group ⁇ consisting ⁇ of ⁇ Fab, ⁇ scFv; ⁇ single ⁇ domain, ⁇ or ⁇ a ⁇ fragment ⁇ thereof, ⁇ bis ⁇ scFv, ⁇ F(ab)2, ⁇ F(ab)3, ⁇ minibody, ⁇ diabody, ⁇ triabody, ⁇ tetrabody ⁇ and ⁇ tandab.
- ⁇ the ⁇ method ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure ⁇ comprises ⁇ selectively ⁇ removing ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ and ⁇ signal ⁇ oligonucleotides ⁇ from ⁇ the ⁇ sample, ⁇ thereby ⁇ essentially ⁇ maintaining ⁇ the ⁇ specific ⁇ binding ⁇ of ⁇ the ⁇ analyte-specific ⁇ probes ⁇ to ⁇ the ⁇ analyte ⁇ to ⁇ be ⁇ encoded.
- all ⁇ steps ⁇ are ⁇ performed ⁇ sequentially.
- some ⁇ steps ⁇ may ⁇ be ⁇ performed ⁇ simultaneously, ⁇ in ⁇ particular ⁇ the ⁇ contacting ⁇ steps ⁇ A) ⁇ to ⁇ C), ⁇ in ⁇ particular ⁇ B) ⁇ and ⁇ C).
- said ⁇ encoding ⁇ scheme ⁇ may ⁇ be predetermined ⁇ and ⁇ allocated ⁇ to ⁇ the ⁇ analyte ⁇ to ⁇ be ⁇ encoded.
- ⁇ the ⁇ code ⁇ words ⁇ obtained ⁇ for ⁇ the ⁇ individual ⁇ analytes ⁇ in ⁇ the ⁇ performed ⁇ cycles ⁇ comprise ⁇ the ⁇ detected ⁇ signals ⁇ and ⁇ additionally ⁇ at ⁇ least ⁇ one ⁇ element ⁇ corresponding ⁇ to ⁇ no ⁇ detected ⁇ signal like ⁇ 0,1 ⁇ or ⁇ 0,1,2 ⁇ etc. ⁇ (see ⁇ also ⁇ Fig. ⁇ 13 ⁇ and ⁇ Fig. ⁇ 14).
- In ⁇ this ⁇ cycle ⁇ the ⁇ position ⁇ has ⁇ the ⁇ value ⁇ zero ⁇ (0).
- ⁇ at ⁇ least ⁇ for ⁇ one ⁇ individual ⁇ analyte ⁇ a ⁇ position ⁇ of ⁇ the ⁇ code ⁇ word ⁇ is ⁇ zero ⁇ (0).
- the ⁇ ⁇ code ⁇ word ⁇ zero ⁇ (0) ⁇ is ⁇ generated ⁇ ⁇ by ⁇ using ⁇ no ⁇ decoding ⁇ oligonucleotides ⁇ ⁇ having ⁇ an ⁇ identifier ⁇ connector ⁇ element ⁇ (t) ⁇ comprising ⁇ a ⁇ nucleotide ⁇ sequence ⁇ which ⁇ is ⁇ essentially ⁇ complementary ⁇ to ⁇ at ⁇ least ⁇ a ⁇ section ⁇ of ⁇ the ⁇ unique ⁇ identifier ⁇ sequence ⁇ of ⁇ the ⁇ identifier ⁇ element ⁇ (T) ⁇ of ⁇ a ⁇ corresponding ⁇ analyte-specific ⁇ probe ⁇ for ⁇ an ⁇ individual ⁇ analyte.
- oligonucleotides having ⁇ an ⁇ identifier ⁇ connector ⁇ element ⁇ (t) ⁇ comprising ⁇ a ⁇ nucleotide ⁇ sequence ⁇ which ⁇ is ⁇ essentially ⁇ complementary ⁇ to ⁇ at ⁇ least ⁇ a ⁇ section ⁇ of ⁇ the ⁇ unique ⁇ identifier ⁇ sequence ⁇ of ⁇ the ⁇ identifier ⁇ element ⁇ (T) ⁇ of ⁇ a ⁇ corresponding ⁇ analyte-specific ⁇ probe ⁇ for ⁇ an ⁇ individual ⁇ analyte ⁇ are ⁇ used.
- the ⁇ sample ⁇ is ⁇ contacted ⁇ with ⁇ at ⁇ least ⁇ one, ⁇ preferably ⁇ at ⁇ least ⁇ two different ⁇ sets ⁇ of ⁇ signal ⁇ oligonucleotides, ⁇ wherein ⁇ the ⁇ signal ⁇ oligonucleotides ⁇ in ⁇ each ⁇ set ⁇ comprise ⁇ a ⁇ different ⁇ signal ⁇ element ⁇ and ⁇ comprise ⁇ a ⁇ different ⁇ connector ⁇ element ⁇ (C).
- the ⁇ different ⁇ sets ⁇ of ⁇ non-signal ⁇ oligonucleotides may ⁇ be ⁇ comprised ⁇ in ⁇ a ⁇ pre- mixture ⁇ of ⁇ different ⁇ sets ⁇ of ⁇ non-signal ⁇ oligonucleotides ⁇ or ⁇ exist ⁇ separately.
- the ⁇ decoding ⁇ oligonucleotides in ⁇ a ⁇ particular ⁇ set ⁇ of ⁇ decoding ⁇ oligonucleotides ⁇ interacts ⁇ with ⁇ identical ⁇ identifier ⁇ elements ⁇ (T) ⁇ which ⁇ are ⁇ unique ⁇ to ⁇ a ⁇ particular ⁇ analyte.
- ⁇ the ⁇ different ⁇ sets ⁇ of ⁇ decoding ⁇ oligonucleotides ⁇ may ⁇ be ⁇ comprised ⁇ in ⁇ a ⁇ pre- mixture ⁇ of ⁇ different ⁇ sets ⁇ of ⁇ decoding ⁇ oligonucleotides ⁇ or ⁇ exist ⁇ separately as ⁇ well ⁇ as ⁇ the ⁇ different ⁇ sets ⁇ of ⁇ analyte-specific ⁇ probes ⁇ may ⁇ be ⁇ comprised ⁇ in ⁇ a ⁇ pre-mixture ⁇ of ⁇ different ⁇ sets ⁇ of ⁇ analyte- specific ⁇ probes ⁇ or ⁇ exist ⁇ separately as ⁇ well the ⁇ different ⁇ sets ⁇ of ⁇ signal ⁇ oligonucleotides ⁇ may ⁇ be ⁇ comprised ⁇ in ⁇ a ⁇ pre-mixture ⁇ of ⁇ different ⁇ sets ⁇ of ⁇ signal ⁇ oligonucleotides ⁇ or ⁇ exist ⁇ separately.
- ⁇ the ⁇ analyte ⁇ specific ⁇ probes ⁇ may ⁇ be incubated ⁇ with ⁇ the ⁇ sample, ⁇ thereby ⁇ allowing ⁇ a ⁇ specific ⁇ binding ⁇ of ⁇ the ⁇ analyte ⁇ specific ⁇ probes ⁇ to ⁇ the ⁇ analytes ⁇ to ⁇ be ⁇ encoded, ⁇ further ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ may ⁇ be incubated ⁇ with ⁇ the ⁇ sample, ⁇ thereby ⁇ allowing ⁇ a ⁇ specific ⁇ hybridization ⁇ of ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ to ⁇ identifier ⁇ elements ⁇ (T) ⁇ of ⁇ the ⁇ respective ⁇ analyte-specific ⁇ probes, ⁇ further the ⁇ signal oligonucleotides ⁇ may ⁇ be incubated ⁇ with ⁇ the ⁇ sample, ⁇ thereby ⁇ allowing ⁇ a ⁇ specific ⁇ RES-PA18-PCT ⁇ hybridization ⁇ of ⁇ the ⁇ signal ⁇ oli
- ⁇ the ⁇ analyte ⁇ to ⁇ be ⁇ encoded ⁇ may ⁇ be a ⁇ nucleic ⁇ acid, ⁇ preferably ⁇ DNA, ⁇ PNA, ⁇ RNA, ⁇ in ⁇ particular ⁇ mRNA, ⁇ a ⁇ peptide, ⁇ polypeptide, ⁇ a ⁇ protein or ⁇ combinations ⁇ thereof. Therefore, ⁇ the ⁇ binding ⁇ element ⁇ (S) ⁇ may ⁇ comprise ⁇ an ⁇ amino ⁇ acid ⁇ sequence ⁇ allowing ⁇ a ⁇ specific ⁇ binding ⁇ to ⁇ the ⁇ analyte ⁇ to ⁇ be ⁇ encoded.
- the ⁇ binding ⁇ element ⁇ (S) ⁇ is ⁇ an ⁇ antibody ⁇ or ⁇ an ⁇ antibody ⁇ fragment ⁇ selected ⁇ from ⁇ the ⁇ group ⁇ consisting ⁇ of ⁇ Fab, ⁇ scFv; ⁇ single ⁇ domain, ⁇ or ⁇ a ⁇ fragment ⁇ thereof, ⁇ bis ⁇ scFv, ⁇ Fab ⁇ 2, ⁇ Fab ⁇ 3, ⁇ minibody, ⁇ diabody, ⁇ triabody, ⁇ tetrabody ⁇ and ⁇ tandab.
- ⁇ the ⁇ signal ⁇ caused ⁇ by ⁇ the ⁇ signal ⁇ element therefore ⁇ in ⁇ particular ⁇ the ⁇ binding ⁇ of ⁇ the ⁇ signal ⁇ oligonucleotides ⁇ to ⁇ the ⁇ decoding ⁇ oligonucleotides, ⁇ interacting ⁇ with ⁇ the ⁇ corresponding ⁇ analyte ⁇ probes, ⁇ bound ⁇ to ⁇ the ⁇ respective ⁇ analyte ⁇ is ⁇ determined ⁇ by: (a) Imaging ⁇ at ⁇ least ⁇ a ⁇ portion ⁇ of ⁇ the ⁇ sample; ⁇ and/or (b) Using ⁇ an ⁇ optical ⁇ imaging ⁇ technique; ⁇ and/or (c) Using ⁇ a ⁇ fluorescence ⁇ imaging ⁇ technique; ⁇ and/or (d) Multi-color ⁇ fluorescence ⁇ imaging ⁇ technique; ⁇ and/or ⁇ (e) Super-resolution ⁇ fluorescence ⁇ imaging ⁇ technique.
- the ⁇ kits ⁇ and ⁇ method ⁇ according to ⁇ the ⁇ present ⁇ disclosure ⁇ may ⁇ be ⁇ used ⁇ ideally ⁇ for ⁇ in ⁇ vitromethods ⁇ for ⁇ diagnosis ⁇ of ⁇ a ⁇ disease ⁇ selected ⁇ from ⁇ the ⁇ group ⁇ comprising ⁇ cancer, ⁇ neuronal ⁇ diseases, ⁇ cardiovascular ⁇ diseases, ⁇ inflammatory ⁇ diseases, ⁇ autoimmune ⁇ diseases, ⁇ diseases ⁇ due ⁇ to ⁇ a ⁇ viral ⁇ or ⁇ bacterial ⁇ infection, ⁇ skin ⁇ diseases, ⁇ skeletal ⁇ muscle ⁇ diseases, ⁇ dental ⁇ diseases, and ⁇ prenatal ⁇ diseases.
- ⁇ the ⁇ kits ⁇ and ⁇ method ⁇ according to ⁇ the ⁇ present ⁇ disclosure ⁇ may ⁇ be ⁇ used ⁇ also ⁇ ideally ⁇ for ⁇ in ⁇ vitromethods ⁇ for ⁇ screening, ⁇ identifying ⁇ and/or ⁇ testing ⁇ a ⁇ substance ⁇ and/or ⁇ drug ⁇ comprising: (a) contacting ⁇ a ⁇ test ⁇ sample ⁇ comprising ⁇ a ⁇ sample ⁇ with ⁇ a ⁇ substance ⁇ and/or ⁇ drug ⁇ (b) detecting ⁇ different ⁇ analytes ⁇ in ⁇ a ⁇ sample ⁇ by ⁇ sequential ⁇ signal-encoding ⁇ of ⁇ said ⁇ analytes ⁇ with ⁇ a ⁇ method ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure.
- optical ⁇ multiplexing ⁇ system ⁇ suitable ⁇ for ⁇ the ⁇ method ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure comprising ⁇ at ⁇ least: - a reaction ⁇ vessel ⁇ for ⁇ containing ⁇ the ⁇ kits ⁇ or ⁇ part ⁇ of ⁇ the ⁇ kits ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure; - a ⁇ detection ⁇ unit ⁇ comprising ⁇ a ⁇ microscope, ⁇ in ⁇ particular ⁇ a ⁇ fluorescence ⁇ microscope; - a ⁇ camera; - a ⁇ liquid ⁇ handling ⁇ device.
- optical ⁇ multiplexing ⁇ system ⁇ may ⁇ comprise ⁇ further ⁇ a ⁇ heat ⁇ and ⁇ cooling ⁇ device and/or ⁇ a ⁇ robotic ⁇ system.
- ⁇ the ⁇ method ⁇ according ⁇ to ⁇ the ⁇ present ⁇ disclosure ⁇ encodes a ⁇ nucleic ⁇ acid ⁇ analyte, ⁇ such ⁇ as ⁇ an ⁇ mRNA, ⁇ e.g., such ⁇ an ⁇ mRNA ⁇ coding ⁇ for ⁇ a ⁇ particular ⁇ protein.
- the ⁇ disclosure is ⁇ now ⁇ further ⁇ explained ⁇ by ⁇ means ⁇ of ⁇ embodiments ⁇ resulting ⁇ in ⁇ additional ⁇ features, ⁇ characteristics ⁇ and ⁇ advantages ⁇ of ⁇ the ⁇ disclosure.
- the ⁇ technology ⁇ allows ⁇ distinguishing ⁇ a ⁇ higher ⁇ number ⁇ of ⁇ analytes ⁇ than ⁇ different ⁇ signals ⁇ are ⁇ available.
- the ⁇ process ⁇ preferably ⁇ includes ⁇ at ⁇ least ⁇ one, ⁇ preferably ⁇ at ⁇ least ⁇ two consecutive ⁇ rounds ⁇ of ⁇ specific ⁇ binding, ⁇ signal ⁇ detection ⁇ and ⁇ selective ⁇ denaturation ⁇ (if ⁇ a ⁇ next ⁇ round ⁇ is ⁇ required), ⁇ eventually ⁇ producing ⁇ a ⁇ signal ⁇ code.
- the ⁇ decoding ⁇ oligonucleotide ⁇ transcribes ⁇ the ⁇ information
- ⁇ the ⁇ present ⁇ disclosure ⁇ pertains ⁇ to ⁇ a ⁇ method ⁇ of ⁇ assigning ⁇ an ⁇ analyte ⁇ to ⁇ a ⁇ position ⁇ in ⁇ an ⁇ image, ⁇ comprising ⁇ assigning ⁇ a ⁇ fluorescence ⁇ pattern ⁇ to ⁇ the ⁇ analyte, ⁇ observing ⁇ the ⁇ fluorescence ⁇ pattern ⁇ at ⁇ the ⁇ position ⁇ in ⁇ the ⁇ image, ⁇ and ⁇ assigning ⁇ the ⁇ analyte ⁇ to ⁇ the ⁇ position, ⁇ in ⁇ particular ⁇ wherein ⁇ observing ⁇ the ⁇ fluorescence ⁇ pattern ⁇ comprises ⁇ repeating ⁇ steps ⁇ of ⁇ labeling ⁇ the ⁇ position ⁇ using ⁇ a ⁇ fluorophore ⁇ tagged ⁇ oligo ⁇ drawn ⁇ from ⁇ a ⁇ re-accessible pool, ⁇ performing ⁇ a ⁇ single ⁇ excitation ⁇ at ⁇ the ⁇ position ⁇ in ⁇ the ⁇ image, ⁇ and ⁇ contacting ⁇ the ⁇ analyte ⁇ to ⁇ a ⁇ denaturant, ⁇ in ⁇ particular ⁇ wherein ⁇ observing ⁇ the ⁇ the ⁇
- ⁇ the ⁇ present ⁇ disclosure ⁇ pertains ⁇ to ⁇ a ⁇ method ⁇ of ⁇ assigning ⁇ coded ⁇ fluorescence ⁇ patterns ⁇ to ⁇ a ⁇ plurality ⁇ of ⁇ target ⁇ analytes ⁇ in ⁇ a ⁇ cell, ⁇ comprising: ⁇ subjecting ⁇ the ⁇ cell ⁇ to ⁇ a ⁇ plurality ⁇ of ⁇ detection ⁇ rounds, ⁇ each ⁇ detection ⁇ round ⁇ comprising: ⁇ contacting ⁇ the ⁇ cell ⁇ to ⁇ representatives ⁇ of ⁇ the ⁇ same ⁇ at ⁇ least ⁇ one, ⁇ preferably ⁇ at ⁇ least ⁇ two populations ⁇ of ⁇ tagged ⁇ fluorescence ⁇ moieties, ⁇ and ⁇ removing ⁇ the ⁇ fluorescent ⁇ moieties ⁇ after ⁇ a ⁇ single ⁇ excitation ⁇ event, ⁇ in ⁇ particular - wherein ⁇ the ⁇ number ⁇ of ⁇ patterns ⁇ detectable ⁇ increases ⁇ exponentially ⁇ with ⁇ the ⁇ number ⁇ of ⁇ detection ⁇ rounds, ⁇ - wherein ⁇ the ⁇ fluorescence ⁇ moieties
- ⁇ the ⁇ present ⁇ disclosure ⁇ pertains ⁇ to ⁇ a ⁇ method ⁇ of ⁇ assigning ⁇ coded ⁇ fluorescence ⁇ patterns ⁇ to ⁇ a ⁇ plurality ⁇ of ⁇ target ⁇ analytes ⁇ in ⁇ a ⁇ cell, ⁇ comprising: ⁇ contacting ⁇ a ⁇ target ⁇ to ⁇ a ⁇ bipartite ⁇ labeling ⁇ probe, ⁇ the ⁇ bipartite ⁇ labeling ⁇ probe ⁇ comprising ⁇ a ⁇ target- specific ⁇ moiety ⁇ and ⁇ a ⁇ fluorophore-specifying ⁇ moiety; ⁇ contacting ⁇ the ⁇ bipartite ⁇ labeling ⁇ probe ⁇ to ⁇ a ⁇ first ⁇ aliquot ⁇ of ⁇ a ⁇ fluorophore ⁇ reservoir ⁇ comprising ⁇ no ⁇ more ⁇ than ⁇ two ⁇ populations ⁇ of ⁇ fluorophores; ⁇ replacing
- ⁇ replacing ⁇ the ⁇ fluorophore ⁇ specifying ⁇ moiety ⁇ in ⁇ the ⁇ bipartite ⁇ probe ⁇ comprises ⁇ denaturing ⁇ a ⁇ binding ⁇ between ⁇ a ⁇ target-specific ⁇ moiety ⁇ and ⁇ a ⁇ fluorophore-specifying ⁇ moiety ⁇ after ⁇ subjecting ⁇ the ⁇ bipartite ⁇ labeling ⁇ probe ⁇ bound ⁇ to ⁇ a ⁇ RES-PA18-PCT ⁇ fluorophore ⁇ of ⁇ the ⁇ fluorophore ⁇ to ⁇ excitation ⁇ energy.
- ⁇ replacing ⁇ the ⁇ fluorophore ⁇ specifying ⁇ moiety ⁇ in ⁇ the ⁇ bipartite ⁇ probe ⁇ comprises ⁇ drawing ⁇ from ⁇ one ⁇ of ⁇ no ⁇ more ⁇ than ⁇ two ⁇ fluorophore ⁇ specifying ⁇ moiety ⁇ reservoirs.
- Step ⁇ 1 ⁇ Applying ⁇ the ⁇ at ⁇ least ⁇ 20 ⁇ analyte- or ⁇ target-specific ⁇ probe ⁇ sets.
- ⁇ a ⁇ probe ⁇ set ⁇ of ⁇ 5 ⁇ different ⁇ probes ⁇ is ⁇ shown, ⁇ each ⁇ comprising ⁇ a ⁇ sequence ⁇ element ⁇ complementary ⁇ to ⁇ an ⁇ individual ⁇ subsequence ⁇ of ⁇ the ⁇ target ⁇ nucleic ⁇ acid ⁇ sequence ⁇ (S1 ⁇ to ⁇ S5).
- S1 ⁇ to ⁇ S5 ⁇ In ⁇ this ⁇ example, ⁇ the ⁇ regions ⁇ do ⁇ not ⁇ overlap.
- Step ⁇ 5 ⁇ Hybridization ⁇ of ⁇ decoding ⁇ oligonucleotides.
- the ⁇ decoding ⁇ oligonucleotides ⁇ are ⁇ hybridized ⁇ with ⁇ the ⁇ unique ⁇ identifier ⁇ sequences ⁇ of ⁇ the ⁇ probes ⁇ (T) ⁇ via ⁇ their ⁇ complementary ⁇ first ⁇ sequence ⁇ elements ⁇ (t). ⁇ After ⁇ incubation, ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ provide ⁇ the ⁇ translator ⁇ sequence ⁇ element ⁇ (c) ⁇ for ⁇ a ⁇ subsequent ⁇ hybridization ⁇ step.
- Step ⁇ 6 Eliminating ⁇ the ⁇ excess ⁇ of ⁇ decoding ⁇ oligonucleotides. ⁇ After ⁇ hybridization, ⁇ the ⁇ unbound ⁇ decoding ⁇ oligonucleotides ⁇ are ⁇ eliminated, ⁇ e.g. ⁇ by ⁇ washing ⁇ steps.
- Step ⁇ 7 ⁇ Applying ⁇ the ⁇ signal ⁇ oligonucleotide. ⁇ The ⁇ signal ⁇ oligonucleotides ⁇ are ⁇ applied. ⁇ The ⁇ signal ⁇ oligonucleotides ⁇ comprise ⁇ at ⁇ least ⁇ one ⁇ second ⁇ connector ⁇ element ⁇ (C) ⁇ that ⁇ is ⁇ essentially ⁇ complementary ⁇ to ⁇ the ⁇ translator ⁇ sequence ⁇ element ⁇ (c) ⁇ and ⁇ at ⁇ least ⁇ one ⁇ signal ⁇ element ⁇ that ⁇ provides ⁇ a ⁇ detectable ⁇ signal ⁇ (F).
- Step ⁇ 8 ⁇ Hybridization ⁇ of ⁇ the ⁇ signal ⁇ oligonucleotides.
- the ⁇ signal ⁇ oligonucleotides ⁇ are ⁇ hybridized ⁇ via ⁇ the ⁇ complementary ⁇ sequence ⁇ connector ⁇ element ⁇ (C) ⁇ to ⁇ the ⁇ translator ⁇ element ⁇ (c) ⁇ of ⁇ decoding ⁇ oligonucleotide.
- Step ⁇ 9 ⁇ Eliminating ⁇ the ⁇ excess ⁇ of ⁇ signal ⁇ oligonucleotides. ⁇ After ⁇ hybridization, ⁇ the ⁇ unbound ⁇ signal ⁇ oligonucleotides ⁇ are ⁇ eliminated, ⁇ e.g. ⁇ by ⁇ washing ⁇ steps.
- Step ⁇ 12 ⁇ Eliminating ⁇ the ⁇ denatured ⁇ decoding ⁇ oligonucleotides.
- Step ⁇ 1 Target ⁇ nucleic ⁇ acids: ⁇ In ⁇ this ⁇ example ⁇ three ⁇ different ⁇ target ⁇ nucleic ⁇ acids ⁇ (A), ⁇ (B) ⁇ and ⁇ (C) ⁇ have ⁇ to ⁇ be ⁇ detected ⁇ and ⁇ differentiated ⁇ by ⁇ using ⁇ only ⁇ two ⁇ different ⁇ types ⁇ of ⁇ signal ⁇ oligonucleotides.
- the ⁇ three ⁇ different ⁇ nucleic ⁇ acid ⁇ sequences ⁇ are ⁇ encoded ⁇ by ⁇ three ⁇ rounds ⁇ of ⁇ detection ⁇ with ⁇ three ⁇ different ⁇ signal ⁇ types ⁇ (1), ⁇ (2) ⁇ and ⁇ (1/2) ⁇ and ⁇ a ⁇ resulting ⁇ hamming ⁇ distance ⁇ of ⁇ 3 ⁇ to ⁇ allow ⁇ for ⁇ error ⁇ de
- Step ⁇ 3 Hybridization ⁇ of ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ and ⁇ multi-decoders: ⁇ For ⁇ each ⁇ unique ⁇ identifier ⁇ present, ⁇ a ⁇ certain ⁇ decoding ⁇ oligonucleotide ⁇ or ⁇ multi-decoder ⁇ is ⁇ applied ⁇ specifically ⁇ hybridizing ⁇ to ⁇ the ⁇ corresponding ⁇ unique ⁇ identifier ⁇ sequence ⁇ by ⁇ its ⁇ first ⁇ RES-PA18-PCT ⁇ sequence ⁇ element ⁇ (here ⁇ (t1) ⁇ to ⁇ (T1), ⁇ (t2) ⁇ to ⁇ (T2) ⁇ and ⁇ (t3) ⁇ to ⁇ (T3)).
- Each ⁇ of ⁇ the ⁇ decoding ⁇ oligonucleotides ⁇ or ⁇ multi-decoders ⁇ provides ⁇ a ⁇ translator ⁇ or ⁇ two ⁇ translator ⁇ elements ⁇ that ⁇ define ⁇ the ⁇ signals ⁇ that ⁇ will ⁇ be ⁇ generated ⁇ after ⁇ hybridization
- Step ⁇ 4 ⁇ Hybridization ⁇ of ⁇ signal ⁇ oligonucleotides: ⁇ For ⁇ each ⁇ type ⁇ of ⁇ translator ⁇ element, ⁇ a ⁇ signal ⁇ oligonucleotide ⁇ with ⁇ a ⁇ certain ⁇ signal, ⁇ differentiable ⁇ from ⁇ signals ⁇ of ⁇ other ⁇ signal ⁇ oligonucleotides, ⁇ is ⁇ applied. ⁇ This ⁇ signal ⁇ oligonucleotide ⁇ can ⁇ specifically ⁇ hybridize ⁇ to ⁇ the ⁇ corresponding ⁇ translator ⁇ element. ⁇ The ⁇ illustration ⁇ in ⁇ Fig. ⁇ 16 ⁇ summarizes ⁇ steps ⁇ 7 ⁇ to ⁇ 9 ⁇ of ⁇ Fig. ⁇ 3 Step ⁇ 5: ⁇ Signal ⁇ detection ⁇ for ⁇ the ⁇ encoding ⁇ scheme: ⁇ The ⁇ different ⁇ signals ⁇ are ⁇ detected. ⁇ Note ⁇ that ⁇ in ⁇ this ⁇ example ⁇ the nucleic ⁇ acids ⁇ (A), ⁇ (B) ⁇ and ⁇ (C) ⁇ can ⁇ already ⁇ be ⁇ distinguished ⁇ after ⁇ the ⁇
- Step ⁇ 6 ⁇ Selective ⁇ denaturation: ⁇ The ⁇ decoding ⁇ (and ⁇ signal) ⁇ oligonucleotides ⁇ and/or ⁇ multi- decoders ⁇ of ⁇ all ⁇ nucleic ⁇ acid ⁇ sequences ⁇ to ⁇ be ⁇ detected ⁇ are ⁇ selectively ⁇ denatured ⁇ and ⁇ eliminated ⁇ as ⁇ described ⁇ in ⁇ steps ⁇ 11 ⁇ and ⁇ 12 ⁇ of ⁇ Fig.3. Afterwards ⁇ the ⁇ unique ⁇ identifier ⁇ sequences ⁇ of ⁇ the ⁇ different ⁇ probe ⁇ sets ⁇ can ⁇ be ⁇ used ⁇ for ⁇ the ⁇ next ⁇ round ⁇ of ⁇ hybridization ⁇ and ⁇ detection.
- This ⁇ way ⁇ three ⁇ different ⁇ nucleic ⁇ acids ⁇ can ⁇ be ⁇ distinguished in ⁇ three ⁇ detection ⁇ rounds ⁇ with ⁇ two ⁇ different ⁇ signals, ⁇ allowing ⁇ an ⁇ error ⁇ detection ⁇ and ⁇ correction.
- Step ⁇ 2 ⁇ Hybridization ⁇ of ⁇ the ⁇ probe ⁇ sets. ⁇ For ⁇ each ⁇ target ⁇ nucleic ⁇ acid, ⁇ an ⁇ own ⁇ probe ⁇ set ⁇ is ⁇ applied, ⁇ specifically ⁇ hybridizing ⁇ to ⁇ the ⁇ corresponding ⁇ nucleic ⁇ acid ⁇ sequence ⁇ of ⁇ interest. ⁇ Each ⁇ probe ⁇ set ⁇ provides ⁇ a ⁇ unique ⁇ identifier ⁇ sequence ⁇ (T1), ⁇ (T2) ⁇ or ⁇ (T3). ⁇ This ⁇ way ⁇ each ⁇ different ⁇ target ⁇ nucleic ⁇ acid ⁇ is ⁇ uniquely ⁇ labeled. ⁇ In ⁇ this ⁇ example ⁇ sequence ⁇ (T) ⁇ is ⁇ labeled ⁇ with ⁇ (T1), ⁇ sequence ⁇ (B) ⁇ with ⁇ (T2) ⁇ and ⁇ sequence ⁇ (C) ⁇ with ⁇ (T3). ⁇ The ⁇ illustration ⁇ summarizes steps ⁇ 1 ⁇ to ⁇ 3 ⁇ of ⁇ Figure ⁇ 3.
- Step ⁇ 3 ⁇ Hybridization ⁇ of ⁇ the ⁇ decoding ⁇ oligonucleotides.
- each ⁇ unique ⁇ identifier ⁇ present ⁇ a ⁇ certain ⁇ decoding ⁇ oligonucleotide ⁇ is ⁇ applied ⁇ specifically ⁇ hybridizing ⁇ to ⁇ the ⁇ corresponding ⁇ unique ⁇ identifier ⁇ sequence ⁇ by ⁇ its ⁇ first ⁇ sequence ⁇ element ⁇ (here ⁇ (t1) ⁇ to ⁇ (T1), ⁇ (t2) ⁇ to ⁇ (T2) ⁇ and ⁇ (t3) ⁇ to ⁇ (T3)).
- Each ⁇ of ⁇ the ⁇ decoding ⁇ oligonucleotides provides ⁇ a ⁇ translator ⁇ element ⁇ that ⁇ defines ⁇ the ⁇ signal ⁇ that ⁇ will ⁇ be ⁇ generated ⁇ after ⁇ hybridization ⁇ of ⁇ signal ⁇ oligonucleotides.
- Step ⁇ 4 ⁇ Hybridization ⁇ of ⁇ signal ⁇ oligonucleotides. ⁇ For ⁇ each ⁇ type ⁇ of ⁇ translator ⁇ element, ⁇ a ⁇ signal ⁇ oligonucleotide ⁇ with ⁇ a ⁇ certain ⁇ signal ⁇ (2), ⁇ differentiable ⁇ from ⁇ signals ⁇ of ⁇ other ⁇ signal ⁇ oligonucleotides, ⁇ is ⁇ applied. ⁇ This ⁇ signal ⁇ oligonucleotide ⁇ can ⁇ specifically ⁇ hybridize ⁇ to ⁇ the ⁇ corresponding ⁇ translator ⁇ element. ⁇ The ⁇ illustration ⁇ summarizes ⁇ steps ⁇ 7 ⁇ to ⁇ 9 ⁇ of ⁇ Figure ⁇ 3.
- Step ⁇ 6 ⁇ Selective ⁇ denaturation.
- the ⁇ method ⁇ according ⁇ to ⁇ the ⁇ disclosure combines ⁇ the ⁇ advantages ⁇ of ⁇ seqFISH (mainly ⁇ complete ⁇ freedom ⁇ concerning ⁇ the ⁇ encoding ⁇ scheme) ⁇ with ⁇ all ⁇ advantages ⁇ of ⁇ methods ⁇ using ⁇ only ⁇ one ⁇ specific ⁇ hybridization ⁇ event ⁇ while ⁇ eliminating ⁇ the ⁇ major ⁇ problems ⁇ of ⁇ such ⁇ methods.
- the ⁇ efficiency ⁇ E ⁇ of ⁇ the ⁇ whole ⁇ encoding ⁇ process ⁇ can ⁇ be ⁇ described ⁇ by ⁇ the ⁇ following ⁇ equation: RES-PA18-PCT ⁇ Based ⁇ on ⁇ this ⁇ equation ⁇ the ⁇ efficiency ⁇ of ⁇ each ⁇ single ⁇ step ⁇ can ⁇ be ⁇ estimated ⁇ for ⁇ a ⁇ given ⁇ total ⁇ efficiency ⁇ of ⁇ the ⁇ method. ⁇ The ⁇ calculation ⁇ is ⁇ hereby ⁇ based ⁇ on ⁇ the ⁇ assumption, ⁇ that ⁇ each ⁇ process ⁇ has ⁇ the ⁇ same ⁇ efficiency. ⁇ The ⁇ total ⁇ efficiency ⁇ describes ⁇ the ⁇ portion ⁇ of ⁇ successfully ⁇ decodable ⁇ signals ⁇ of ⁇ the ⁇ total ⁇ signals ⁇ present.
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