WO2012165837A2 - 라만 분석 기반 고속 다중 약물 고속 스크리닝 장치 - Google Patents
라만 분석 기반 고속 다중 약물 고속 스크리닝 장치 Download PDFInfo
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- WO2012165837A2 WO2012165837A2 PCT/KR2012/004223 KR2012004223W WO2012165837A2 WO 2012165837 A2 WO2012165837 A2 WO 2012165837A2 KR 2012004223 W KR2012004223 W KR 2012004223W WO 2012165837 A2 WO2012165837 A2 WO 2012165837A2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
- G01N21/658—Raman scattering enhancement Raman, e.g. surface plasmons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/58—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances
- G01N33/585—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances with a particulate label, e.g. coloured latex
- G01N33/587—Nanoparticles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/15—Medicinal preparations ; Physical properties thereof, e.g. dissolubility
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/365—Control or image processing arrangements for digital or video microscopes
- G02B21/367—Control or image processing arrangements for digital or video microscopes providing an output produced by processing a plurality of individual source images, e.g. image tiling, montage, composite images, depth sectioning, image comparison
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/71—Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
Definitions
- the present invention relates to a Raman assay based high speed multi-drug high speed screening device.
- Drug development is a developed country-type strategic development process, typically involving more than 10 years of long-term investment and more than $ 800 million in capital. In addition, many social infrastructures are required to do this.
- the new drug development process consists mainly of derivation and selection of action points based on basic research, selection of active substances and leading substances by compound screening, confirmation of candidate substances, clinical studies of preclinical / clinical phase 1, and commercialization of phases 2 and 3 have.
- Screening methods can generally be divided into in vitro assay methods performed in vitro and cell-based assay methods for real cells. This The compounds targeted for one screening are as small as tens of thousands for large pharmaceutical companies, all of which are used early in the screening process.
- HTS High Throughput Screening
- Rapid increases the number of compounds that can be screened per day, resulting in a shorter screening process, which saves money.
- Miniaturization is not only the best way to reduce reagent costs, but it also reduces the screening time. And can reduce the space of laboratory.
- Automation not only speeds up screening but also improves the reproducibility of results. In particular, automation is required to reduce the error of the experimenter during the screening process using 384-well or 1536-well microplates.
- Screening sensitivity The sensitivity of the detection method is directly related to the amount of sample to be used. Screening for low sensitivity samples requires more time, so detection sensitivity must be high. ' 6 Non-radioactive method: To date, about 50% of HTS methods use radioactive material. However, radioactive materials generate waste that requires special management and are uneconomical in terms of time, space and cost.
- the screening process should be as simple as possible in the liquid state, because methods that require filtration, separation, washing, extinction, and solid state require additional expense and processing.
- Pharmaceutical companies have invested heavily in compound chemical approaches and existing HTS technologies, and as a result, the number of new drug candidates has increased dramatically, and the candidates thus discovered are subject to the primary screening process (target discovery and verification, candidate discovery).
- Lower yield secondary screening process candidate material optimization).
- the difference in efficiency between the primary and secondary screening processes leads to serious bottlenecks in drug development. Therefore, maintaining the quality of data generated by secondary screening through economical expenditure above a certain level while improving efficiency and matching with the primary screening process has become a major challenge in the drug development process.
- High Content Screening can be defined as "a complex and functional screening technique based on highly sensitive fluorescent images with high resolution in time and space in various targets in living cells.”
- the underlying technology of HCS consists of detailed techniques such as cell-based assays, real-time biological cell imaging through high-resolution fluorescence measurements in time and space, and high-speed and high-content automated assays.
- HCS analysis equipment may include a Perik-Elmer Opera system of FIG. 1.
- Typical cell analysis data that can be obtained with the Opera device is as shown in FIG.
- Fluorescent labeling materials used in the fluorescence analysis have been deteriorated with fluorescence intensity over time (photobleaching).
- the wavelength of the light is very wide, which has the disadvantage of interference between different fluorescent materials.
- the number of fluorescent materials that can be used is extremely limited. Therefore, for effective high-speed drug screening, there is a need for a new method capable of multiple detection because there is no interference between materials and the peaks of the spectrum are sharp.
- Raman spectroscopy has recently attracted attention.
- Raman scattering is a spectroscopic method using a phenomenon in which the intensity of the scattering is rapidly increased by more than 10 6 to 10 8 times.
- Raman scattering When light passes through a tangible medium, some amount deviates from its inherent direction, a phenomenon known as Raman scattering.
- Raman scattering As some of the scattered light is excited by the absorption of light and the high energy levels of the electrons, the inherent stimulated light and frequency differ, and the wavelength of the Raman emission spectrum represents the chemical composition and structural properties of the light absorbing molecules in the sample.
- Raman spectroscopy can be developed into a highly sensitive technology that can directly measure a single molecule in combination with nano technology, which is currently developing at a very rapid pace, and is expected to be used as a medical sensor. I am getting it.
- This surface enhanced Raman spectroscopy (SERS) effect is related to the phenomenon of plasmon resonance, in which the metal nanoparticles exhibit distinct optical resonances in response to incident electromagnetic radiation due to the collective coupling of conducting electrons in the metal, Gold, silver, copper and other metal nanoparticles can act as miniature antennas that enhance the concentration effect of electromagnetic radiation. Molecules located near these particles exhibit much greater sensitivity to Raman spectroscopy analysis.
- Raman spectroscopy has several advantages over other analytical methods (infrared spectroscopy). Infrared spectroscopy gives a strong signal for molecules with a change in the dipole moment of the molecule, while Raman spectroscopy gives a strong signal even for nonpolar molecules with a change in the induced polarization of the molecule. Unique Raman shift (Raman Shift, cm _1 ) In addition, since it is not affected by the interference of water molecules, it is more suitable for the detection of biomolecules such as proteins and genes. However, the low signal strength did not reach a practical level despite the long research period.
- a nanoparticle including a core and a shell and having a nanogap formed between the core and the shell may be manufactured, and the analyte to be detected on the surface of the shell of the nanoparticle may be recognized.
- the biomolecules are functionalized and exposed to samples containing one or more analytes, followed by laser excitation and multiple Raman filters and detectors to obtain single or multiple Raman peaks and perform color coding correspondingly.
- An excitation module consisting of a lens, a mirror, and a pinhole to guide the light source to the microscope;
- a motion controller for controlling the change of the position of the sample, a singular or plural Raman filter for exciting the sample from the light source and filtering the light of Raman wavelength from the light scattered from the sample, and the Raman filter Microscope models for acquiring an image of a sample comprising a detector for sequentially receiving the light passing through the detection;
- the multi-drug high speed screening device may further include a storage chamber in which the core-gap-shell nanoparticles are stored.
- step 1 Adding core-gap shell nanoparticles to the sample to be detected (step 1);
- the laser beam is irradiated onto the sample to remove the core-gap-shell nanoparticles bound to the sample.
- step 2 Detecting the obtained specific Raman scattered light with a detector through a singular or plural Raman filters to obtain a single or plural phase of a sample (step 2);
- step 3 Color coding the images of the singular or plural samples obtained in step 2 into a computer program or transforming them into images of cells or biological tissues and displaying the converted images (step 3).
- step 3 Provides a multi-drug high speed screening method.
- the screening apparatus and method according to the present invention does not measure self-luminescence, but measures Raman signals generated from core-gap-shell nanoparticles, thereby eliminating interference between materials and maximizing surface enhancement Raman scattering effect.
- the use of shell nanoparticles amplifies the Raman signal approximately 10 to 12 times and results in a high reproducibility, using a CCD camera rather than a scanner as the detector to capture each well of the well plate containing the sample individually at once and in motion By moving to another well through the control of the controller to shoot again, it is possible to screen multiple drugs at high speed, multi-color coding is possible, it can be useful for various drug screening.
- FIG. 1 is a photograph showing a conventional fluorescence-based drug assay device for cell analysis.
- Figure 2 is a cell color of two colors obtained from a conventional fluorescence-based cell assay drug detector Unknown
- FIG. 3 is a conceptual diagram of a Raman spectroscopy-based high speed multi-drug fast screening device according to the present invention.
- FIG. 4 shows an exemplary core-gap-shell nanoparticle used in Raman spectroscopy based fast multi-drug fast screening method according to the present invention.
- Figure 5 is a graph measuring the surface enhanced Raman scattering spectrum with the device of the present invention using the nanoparticles prepared in Preparation Example 1-3.
- FIG. 6 is a graph showing a wavelength region of a narrow band pass filter selectively transmitting Raman light scattered from the nanoparticles prepared in Preparation Examples 1-3.
- FIG. 6 is a graph showing a wavelength region of a narrow band pass filter selectively transmitting Raman light scattered from the nanoparticles prepared in Preparation Examples 1-3.
- Figure 7 is a photograph showing that the selective imaging of each narrow band filter for selectively transmitting the Raman light scattered from the nanoparticles prepared in Preparation Examples 1-3.
- FIG. 8 is a photograph showing the sum of the images obtained by using the respective narrow-band filters for selectively transmitting the Raman light scattered from the nanoparticles prepared in Preparation Examples 1-3.
- FIG. 10 is an image of a control group (a) not adding nanoparticles to cells and a test group (b) to which PEG-coated nanoparticles prepared in Preparation Example 5 were added using the apparatus of the present invention.
- (“Filter 1" and “Filter 2”) are each measured images.
- FIG. 11 is an image obtained by measuring the cells found in the region by designating three parts in the experimental group to which the PEG-coated nanoparticles prepared in Preparation Example 4 were added. Two narrow-band filters (“Filter 1 "And” Filter 2 ”) respectively measured images.
- FIG. 12 is an image obtained by measuring the cells found in the region by designating three parts in the experimental group to which the PEG-coated nanoparticles prepared in Preparation Example 5 were added. Two narrow-band filters (“Filter 1 "And” Filter 2 ”) respectively measured images. -
- An excitation module consisting of a lens, a mirror, and a pinhole to guide the light source to the microscope;
- a motion controller for controlling the change of the position of the sample, a singular or plural Raman filter for exciting the sample from the light source and filtering the light of Raman wavelength from the light scattered from the sample, and the Raman filter
- a microscope module for acquiring an image of a sample, the detector comprising a detector for sequentially receiving light and detecting the light passing through the sample;
- the present invention provides a multi-drug high speed screening apparatus using surface augmented Raman scattering, including image processing modules that convert color images of cells or biological tissues and display the converted images.
- image processing modules that convert color images of cells or biological tissues and display the converted images.
- FIG. 3 is a conceptual diagram of a Raman spectroscopy-based high speed multi-drug fast screening device according to the present invention.
- the high speed multi-drug high speed screening device can be divided into excitation module microscope models and image processing modules. This division of role modules is only for explanatory purposes and may not be mutually exclusive and independent, and may overlap in a certain area or overlap two or more role models in a single area.
- This division of role modules is only for explanatory purposes and may not be mutually exclusive and independent, and may overlap in a certain area or overlap two or more role models in a single area.
- the excitation modules serve to guide the laser beam generated by the light source LSX10 into the microscope.
- the light source LSX10 may be a near infrared (NIR) laser or a visible light laser.
- NIR near infrared
- the visible light may have a wavelength of 400 to 700 nm, in one embodiment the visible light may be a wavelength of 514.5 nm.
- the use of visible light sources causes autofluorescence and autofluorescence leads to a reduction of the Raman signal.
- Raman image experiments using a near infrared light source have been conducted.
- the Raman signal is inversely proportional to the square of the wavelength of the light source, the intensity of the Raman signal can be increased when using a visible light source.
- the laser beam generated by the light source LSX10 passes through the spatial filter 20 to increase the beam diameter and is condensed into a range of about 10 ⁇ through a plurality of lenses, mirrors and pinholes. Can enter .
- Microscope
- the microscope module is a motion controller 50 for controlling the change of the position of the sample, using the laser beam to excite the sample, and the Raman wavelength in the light scattered from the sample. It includes a singular or plural Raman filter 40 for filtering the light, and a detector 111 that sequentially receives the light passing through the Raman filter 40.
- the optical splitter 21 may include a beamsplitter, a dichroic mirror, a detachable mirror, and the like.
- the number of single or plural Raman filters 40 for filtering the light of the Raman wavelength is preferably 1 or more and 20 or less, and preferably 5 or more and 20 or less.
- a band pass filter may be used as the Raman filter, and a narrow band pass filter is preferably used, but is not limited thereto.
- the detector 111 may be used without limitation as long as it is a detector operating in a scan method or a no scan method.
- a PMK Photomultiplier tube (APD) detector or an Avalanche photodiode (APD) detector may be used as the scan method detector.
- Avalanche photodiode (APD) detector may be used as the scan method detector.
- a scan-free detector a charge-coupled device (CCD) camera can be used.
- the sample may be a cell containing an analyte
- the analyte may be, for example, amino acids, peptides, polypeptides, proteins, glycoproteins, lipoproteins, nucleosides, nucleotides, oligonucleotides, nucleic acids, sugars.
- Carbohydrates oligosaccharides, polysaccharides, fatty acids, lipids, hormones, metabolites, cytokines, chemokines, receptors, neurotransmitters, antigens, allergens, antibodies, substrates, metabolites, cofactors, inhibitors, drugs, pharmaceuticals Water, nutrients, prions, toxins, toxins, explosives, killer, chemical weapons, biohazardous agents, radioisotopes, vitamins, heterocyclic aromatics, carcinogens, stones Mutagenic factors, anesthetics, amphetamines, barbiturates, hallucinogens, wastes or contaminants.
- the nucleic acid when the analyte is a nucleic acid, the nucleic acid may be a gene, viral RNA and DNA, bacterial DNA, bearish DNA, mammalian DNA, cDNA, mRNA, RNA and DNA fragments, oligonucleotides, synthetic oligonucleotides, modified oligonucleotides. Single- and double-stranded nucleic acids, natural and synthetic nucleic acids.
- the sample is combined with the core-gap-shell nanoparticles shown in FIG. 4 to amplify the Raman signal outside the device, or the core-gap-shell nanoparticles stored in a storage chamber (not shown) within the device may be incorporated into the sample. Can be combined by exposure.
- the core-gap-shell nanoparticles are functionalized with a biomolecule capable of recognizing the analyte to be detected on the surface of the shell, and when exposed to the sample, selectively binds to the corresponding analyte in the sample to image the form of the analyte. Done.
- biomolecules functionalized to the nanoparticles include antibodies, antibody fragments, genetically engineered antibodies, single-chain antibodies, receptor proteins, binding proteins, enzymes, inhibitor proteins, lectins, cell adhesion proteins, oligonucleotides, polynucleotides, Nucleic acids or aptamers.
- Functionalization can be a biomolecule attached to the nanoparticle surface by electrostatic attraction, directly bonded or functionalized through a linker, this method of functionalization is not particularly limited.
- the core-gap-shell nanoparticles include a core and a shell surrounding the core, and a nanogap is formed between the core and the shell, and the nose
- the fish and shell are nanoparticles connected or not connected by nanobridges, and the nano 3 ⁇ 4 contains optically active molecules.
- the optically active molecule is not limited as long as it is a molecule composed of atoms selected from the group consisting of C, H, 0, N, S and combinations thereof, and also chelates of metal ions, metal ions, and silver metal nanoparticles. Can also be used.
- the signal material used in the present invention is a broad concept encompassing fluorescent organic molecules, non-fluorescent organic molecules, inorganic nanoparticles, and Raman active components, and may include any labeling material capable of coloring without limitation.
- Raman is an active molecule.
- Raman bow component means a substance that facilitates the detection and measurement of an analyte by a Raman detection device when the nanoparticles of the present invention are attached to one or more analytes.
- Raman active molecules that can be used in Raman spectroscopy include organic atoms, molecules or inorganic atoms, molecules and the like.
- Raman active molecule FAM, Dabcyl, TAMRA, TRITC (Tet La methyl rhodamine eu 5 eu isothiocyanate), MGITC (Do ⁇ iteu green isobutyl, thiocyanate Ney bit) eu XRITC (X- Rhodamine-5-isothiocyanate), DTDC (3,3-diethylthiadicarbocyanine iodide), TRIT (tetramethyl rhodamineisothi), ⁇ 1) (7-nitrobenz-2 ⁇ 1 , 3-diazole), phthalic acid, terephthalic acid, isophthalic acid, para-aminobenzoic acid, erythrosine, biotin, digoxigenin, 5-carboxy-4 ', 5'-dichloro-2' ⁇ 7 '-Dimeux, Fluorescein, 5-carboxy-2', 4 ', 5', 5'
- the optically active molecule may be included in the nano 3 ⁇ 4, located in the inner-nanogap modified by the covalent bond or electrostatic attraction to the biomolecules functionalizing the nanoparticles, or the surface of the core particles separately from the biomolecule
- the optically active molecule can be covalently bound or electrostatically attracted.
- the optically active molecule at the nanoparticle may be located close to the core, thereby controlling the optically active molecule to be positioned at the nanogap.
- the Raman signal may vary depending on the position of the optically active molecule.
- the Raman signal may be detected most strongly, and a signal having high uniformity and reproducibility may be generated.
- a specific Raman peak is generated according to the type of optically active molecules included in the nanogap of the core-gap-shell nanoparticle, and the specific Raman peak is equal to this.
- the Raman filter detects an image of a sample (cell) by detecting it with a detector such as a CCD camera, and the image of the sample (cell) is color-coded through a computer program to be converted into an image of the sample (cell) and converted into an image. Is displayed.
- a detector such as a CCD camera
- the term "core” means a spherical or spherical particle having a diameter of 1 to 900 nm and consisting of a metal exhibiting surface plasmon resonance. Gold, silver or copper can be used as the metal exhibiting surface plasmon resonance.
- shell used in the present invention means a coating layer made of a metal exhibiting surface plasmon resonance surrounding the core, wherein the thickness of the shell is 0.1 to 900 nm, preferably 1 nm to 100. nm A nanogap is formed between the shell and the core, so that a space is formed between the core and the shell. Gold, silver, or copper may be used as the metal showing surface plasmon resonance.
- nanogap means a space formed between the core and the shell.
- the thickness of the nanogap is preferably 0.01 nm to 100 nm.
- the core and the shell may be separated by the nanogap space, the core and the shell may not be completely contacted by the nanogap, and in some regions, the core and the shell may be contacted by the nanobridge.
- nanobridge refers to a bridge existing in the nanogap connecting the core and the shell having a diameter of 0.5 to 20 nm.
- Nanoparticles of the invention may include “nanobridged nanogaps” or “nanobridgeless nanogaps” between the core and the shell.
- optically active molecule means a molecule that emits Raman scattered light by an excitation light source.
- the optically active molecule is located in the nanogap between the core and the shell having surface polarazmon resonance to maximize the surface enhanced Raman scattering effect.
- the core-gap-shell nanoparticles comprise i) a gold core and a silver shell and nanoparticles having a nanogap formed between the gold core and the silver shell, ii) a silver core and a gold shell and a silver core Nanoparticles having a nanogap formed between and a gold shell, i) a nanoparticle consisting of a gold core and a gold shell, and nanoparticles having a nanogap formed between a gold core and a gold shell, iv) a silver core and a silver shell And nanoparticles selected from the group consisting of nanoparticles having nanogaps formed between the silver shells, and most preferably, the core-gap-shell nanoparticles are composed of a gold core and a gold shell, and a gold core and gold The nanoparticles may be nanogaps formed between the shells. Also, the shape of the core particles is not limited.
- the core and the shell are in contact through the nanobridges. That is, when the shell is formed on the core, a nanogap is formed between the entire surface of the core, but in some regions, a portion of the material forming the shell may have a structure in which the nanobridge is formed in contact with the core. . This is shown in Figure 4 Likewise, a part of the shell may be formed toward the core in the process of forming the shell, whereby the nanobridges may be formed.
- the number of nanobridges is not limited as long as it can form a nanogap from one or more. 3 ⁇ 4 with a diameter of 0.5 nm to 20 mm 3 is preferred. Nanobridges help to maintain the core and shell structure more stably, and can be a factor in further increasing the signal of the SERS.
- a space is formed between the core and the shell by the nanogap, and the optically active molecules located in the nanogap are subjected to surface-enhanced Raman scattering, by the shell and shell having surface plasmon resonance.
- SERS surface-enhanced Raman scattering
- Light emitted from the sample is filtered by passing through the optical separation device 21 and through the Raman filter 40 so that only a specific Raman wavelength is detected through the detector 111.
- the Raman filter 40 may include a single or a plurality of Raman filters, through which only a specific Raman wavelength may pass, preferably 1 or more and 20 or less, more preferably 5 or more and 20 or less. By passing the light emitted from the sample sequentially through filters of different Raman wavelengths, and detecting the specific Raman wavelengths passed through the detector, one or more and 20 or less multiple phases can be obtained.
- a bandpass filter may be used as the Raman filter, and a narrowband filter is preferably used.
- the detector 111 for example, a no-scan CCD camera, may be installed with a zoom lens to adjust magnification. This enhances the optical microscope's ability to produce optical images, allowing for more detailed observation of the optical image.
- the motion controller 50 converts the point position of the sample into an x-axis or a y-axis. If a number of Raman images are obtained at one point (well) of a sample according to the number of Raman filters on a well, the motion controller 50 moves to another point (well) of the sample under the control of the motion controller 50 and the Raman image of this point. Measure In the apparatus according to the present invention, for example, when using a scanning-less CCD (Charge-coupled device) camera, each well of the well plate containing a sample is photographed individually at a time, and the motion controller By moving to another well under control and taking it again, high-speed screening is possible.
- CCD Charge-coupled device
- the microscope model may be provided with an atmosphere maintaining unit (not shown) for maintaining the atmosphere inside the outer chamber in which the sample is located, wherein the atmosphere maintaining unit controls the temperature, humidity, pH, etc. inside the chamber. can do.
- atmosphere maintaining unit not shown
- the image processing modules perform color coding on the singular or plural images obtained at the point located by the motion controller to convert the images into cells or biological tissues and display the converted images.
- the image processing models are computers. Obtained from the CCD camera
- the data is processed by the processor and the data can be stored in main storage. Data on release profiles for standard analytes may also be stored in main memory or ROM.
- the processor can confirm the analyte type of the sample by comparing the emission spectra from the analyte on the Raman active substrate.
- the processor may analyze data from the detection device to determine the identity and / or concentration of the various analytes. Differently equipped computers can be used for specific implementations. Thus, the structure of the system may be different in different embodiments of the present invention. After data collection, typically data will be sent to data analysis. To facilitate the analysis task, the data obtained by the detection device will typically be analyzed using a digital computer as described above.
- the computer can be suitably programmed for analysis and reporting of the collected data as well as for receiving and storing data from the detection device.
- One or more Raman peaks analyzed by one or more Raman filters can be color coded by software to enter different color images into each peak, converting and converting them into images of cells or biological tissues through the image with the corresponding color.
- the displayed image is displayed on the monitor.
- the device according to the present invention can obtain high resolution surface enhanced Raman scattering spectra by adding one or more core-gap-shell nanoparticles selectively bound to one or more analytes (specific cells) present in a sample, Particularly, each well of the well plate holding the sample is shot at once using a scan-cou led device (CCD) camera, and moved to another well under the control of a motion controller. By taking a picture again, multiple drugs can be screened at high speed.
- CCD scan-cou led device
- step 1 is a step of adding a reagent containing the core gap gap-shell nanoparticles to the sample containing the cells to be detected.
- the core-gap-shell nanoparticles have a biomolecule capable of recognizing the analyte (cell) to be detected on the surface of the shell, thereby exposing the sample to the sample.
- the shape can be imaged with Raman signals from nanoparticles containing optically active molecules.
- the core-gap-shell nanoparticles include i) a gold core and a silver shell, and nanoparticles having a nanogap formed between the gold core and the silver shell, ⁇ ) consisting of a core and a gold shell. Nanoparticles having a nanogap formed between the silver core and the gold shell, iii) a nanoparticle consisting of a gold core and a gold shell, and nanoparticles having a nanogap formed between the gold core and the gold shell, iv) a silver core and a silver shell. And nanoparticles selected from the group consisting of nanoparticles having nanogaps formed between the silver core and the silver shell.
- the core gap-shell nanoparticles are composed of a gold core and a gold shell and gold It may be a nanoparticle having a nanogap formed between the core and the gold shell.
- Exposure on the analyte of the core-gap-shell nanoparticles of step 1 may be performed outside the screening device according to the present invention or inside the screening device according to the present invention.
- the laser beam is irradiated to a sample to detect specific Raman scattered light obtained from the sample by a single or a plurality of Raman filters with a detector, for example, by a CCD camera to acquire images of a single or a plurality of samples.
- the screening device according to the invention is a singular or plural Raman filter, preferably 1 or more and 20 or less, more preferably 5 or more, through which only certain Raman wavelengths can pass.
- the light emitted from the sample of different Raman wavelengths By passing through the filter sequentially and detecting the specific Raman wavelength passed through the detector, multiple phases of 1 to 20 can be obtained.
- a bandpass filter may be used as the Raman filter, and a narrowband filter is preferably used.
- step 3 is a step of converting the image of cells or living tissue by color coding an image of a single or a plurality of samples obtained in Step 2 into compartment "computer program and displays a side image hwandoen.
- an image having a multiplicity of 1 color or more and 20 colors or less may be displayed by color coding a single color or a plurality of samples obtained in step 2 to a specific color through a computer according to Raman peak.
- the screening apparatus and method according to the present invention do not measure self-luminescence, but measure Raman signals generated from core-3 ⁇ 4-shell nanoparticles, thereby eliminating interference between materials and maximizing surface enhancement Raman scattering effect.
- Single DNA P nanoparticles with inner-nanogaps were prepared using the DNA strand as a Raman-dye modification platform with highly accurate position control capability in the following manner.
- DNA-modified gold nanoparticles (20 m particles; DNA sequence: Preparation Example 1 [3'-HS- (CH 2 ) 3- (Dabcyl) -A 10 -PEG 18- ⁇ CTCmGCGCAC-5 ' ], Preparation Example 2 [3'-HS- (CH 2 ) 3- (Cy3) -A 10 -PEGi 8 -AAACTCrrTGCGCAC-5 '] and Preparation Example 3
- [3'-HS- (CH 2 ) 3- (TAMRA) -A 10 -PEG 18 -CTCmGCGCAC-5'D is described in SJ Hurst, AKR Lyt ton-Jin, CA Mirkin, Anal. Chem. 78, 8313 (2006).
- the DNA-modified gold nanoparticles were replaced with a gold precursor (HAuCU), a reducing agent (NH 2 0H-HC1) and 1%.
- the gold precursor (HAuCU), the reducing agent (N3 ⁇ 40H) based on the amount of seeds (gold nanoparticles modified with DNA, 1 nM) The amount of -HC1) was adjusted.
- the DNA-modified gold nanoparticle solution (100 uL; 1 nM concentration in 0.3M PBS) was mixed with 50% 1% PVP solution.
- the solution was mixed with 1.5 y L, 5.2 l, 10.3 ii L or 30.4 hydroxy 1 amine hydrochloride solution (10 mM), respectively, and then 1.5 ⁇ , 5.2 y L, 10.3 uL or 3 ( 4 uL of chloroauric acid solution (5 mM) was mixed.
- various nanostructures were formed.
- PEG-coated gold-silver core-shell nanoparticles suitable for cell experiments on the shell surface of each nanoparticle prepared in Preparation Examples 1-3 and well dispersed in the culture medium were prepared ("Dabcyl” (Preparation) Example 4), “Cy3” (production example 5), “TAMRA” (production example 6); see FIG. 9).
- the PEG coating method was produced by introducing a protocol commonly used for gold nanoparticles.
- MPEG— SH ( ⁇ ⁇ 5 kDa) was used for the shell surface coating of the nanoparticles and mainly used in 'W. Peter Wuelfing, Stephen M. Gross, Deon T. Miles, and Royce W. Murray, J. Am. Chew. Soc. 120, 12696 (1998) Production Example 4-6 was produced with reference to the literature.
- SERS Surface-enhanced Raman scattering
- a sample for spectral measurement was prepared by spin-coating 20 ul of a cover glass on each solution containing the nanoparticles prepared in Preparation Examples 1-3 50 50 nW using an excitation laser of 660 nm as a light source.
- the excitation laser beam is concentrated on the microscope objective (> 400, 1.3 numerical aperture;> ⁇ 0, 0.5 numerical aperture; Zeiss), and the Raman signal that appears is frozen with liquid nitrogen (- 125 ° C) Collected via CCD (charge-coupled device) All data were obtained by baseline-correct ion by removing background signal to obtain surface-enhanced Raman scattering spectrum. The results are shown in FIG. It was.
- Figure 5 is a graph measuring the surface enhanced Raman scattering spectrum with the device of the present invention using the nanoparticles prepared in Preparation Example 1-3.
- the surface-enhanced Raman scattering spectrum was measured by the apparatus of the present invention using the nanoparticles prepared in Preparation Examples 1-3, and it was found that each of the nanoparticles showed different inherent peaks. there was.
- an excitation laser of 660 nm was used as a light source to find a narrow band pass filter that selectively transmits Raman light scattered from each solution containing the nanoparticles prepared in Preparation Examples 1-3.
- a narrow band pass filter that selectively transmits Raman light scattered from each solution containing the nanoparticles prepared in Preparation Examples 1-3.
- Figure 7 is a photograph showing that the selective imaging of each narrow band filter for selectively transmitting the Raman light scattered from the nanoparticles prepared in Preparation Examples 1-3.
- FIG. 8 is a photograph showing the sum of the images obtained by using the respective narrow-band filters for selectively transmitting the Raman light scattered from the nanoparticles prepared in Preparation Examples 1-3.
- Multi-color cell imaging was measured with the device of the present invention using the nanoparticles prepared in Preparation Example 4-5.
- 20,000 HeLa cells (cervical cancer cells) were seeded per well in 96 well-plates and cultured in an incubator for 20 to 24 hours. Cultured cells After washing with PBS buffer, put the cell culture containing the nanoparticles prepared in Preparation Example 4-5 and incubated for 6 hours in an incubator again. Cultured cells are washed with PBS buffer and placed in cold fixation buffer (BD cytofix TM) to fix cells for 15 minutes. After cell fixation, the fixation buffer is removed, washed twice with PBS buffer, and then PBS buffer is added again and refrigerated.
- BD cytofix TM cold fixation buffer
- FIG. 10 is an image of a control group (a) not adding nanoparticles to cells and a test group (b) to which PEG-coated nanoparticles prepared in Preparation Example 5 were added using the apparatus of the present invention. (“Filter 1" and “Filter 2”) are each measured images.
- FIG. 12 is an image obtained by measuring the cells found in the region by designating three parts in the experimental group to which the PEG-coated nanoparticles prepared in Preparation Example 5 were added.
- Two narrow-band filters (“Filter 1 "And” Filter 2 ”) respectively measured images.
- Fanter 1 "And” Filter 2 ” Two narrow-band filters
- Figure 10-12 it was confirmed that the cell image appears only in "Filter 2" that selectively transmits the signal of the PEG-coated nanoparticles prepared in Preparation Example 5. That is, this image was confirmed that the PEG-coated nanoparticles prepared in Preparation Example 5 selectively show only the images shown by adsorption to the cells, not the autofluorescence of the cells.
- optical separation device 30 objective lens
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Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2837463A CA2837463C (en) | 2011-05-29 | 2012-05-29 | High-speed screening apparatus for a raman analysis-based high-speed multiple drug |
| EP12794000.5A EP2717052A4 (en) | 2011-05-29 | 2012-05-29 | HIGH SPEED SCREENING DEVICE FOR A MULTI AND HIGH SPEED MEDICINE BASED ON RAMAN ANALYZES |
| US14/122,975 US9459257B2 (en) | 2011-05-29 | 2012-05-29 | High-speed screening apparatus for a Raman analysis-based high-speed multiple drug |
| JP2014513432A JP5917686B2 (ja) | 2011-05-29 | 2012-05-29 | ラマン分析基盤高速多重薬物高速スクリーニング装置 |
| CN201280038152.XA CN103718038B (zh) | 2011-05-29 | 2012-05-29 | 高速的基于拉曼分析的多药物高速筛选装置 |
| IL229676A IL229676A (en) | 2011-05-29 | 2013-11-28 | Instrument and method are based on Raman analysis for high-speed multidrug screening |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20110050991 | 2011-05-29 | ||
| KR10-2011-0050991 | 2011-05-29 | ||
| KR1020120056775A KR101361652B1 (ko) | 2011-05-29 | 2012-05-29 | 라만 분석 기반 고속 다중 약물 고속 스크리닝 장치 |
| KR10-2012-0056775 | 2012-05-29 |
Publications (2)
| Publication Number | Publication Date |
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| WO2012165837A2 true WO2012165837A2 (ko) | 2012-12-06 |
| WO2012165837A3 WO2012165837A3 (ko) | 2013-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/KR2012/004223 Ceased WO2012165837A2 (ko) | 2011-05-29 | 2012-05-29 | 라만 분석 기반 고속 다중 약물 고속 스크리닝 장치 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9459257B2 (ko) |
| EP (1) | EP2717052A4 (ko) |
| JP (1) | JP5917686B2 (ko) |
| KR (1) | KR101361652B1 (ko) |
| CN (1) | CN103718038B (ko) |
| CA (1) | CA2837463C (ko) |
| IL (1) | IL229676A (ko) |
| WO (1) | WO2012165837A2 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015001033A1 (de) | 2015-01-27 | 2016-07-28 | Leibniz-Institut für Photonische Technologien e. V. | Hochdurchsatz-Screening-System zur Durchführung von optischen Messungen |
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| GB2526112A (en) * | 2014-05-14 | 2015-11-18 | Biopharm Ag R | Means and method for detection of analytes |
| US10261298B1 (en) * | 2014-12-09 | 2019-04-16 | The Board Of Trustees Of The Leland Stanford Junior University | Near-infrared-II confocal microscope and methods of use |
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- 2012-05-29 KR KR1020120056775A patent/KR101361652B1/ko not_active Expired - Fee Related
- 2012-05-29 CN CN201280038152.XA patent/CN103718038B/zh not_active Expired - Fee Related
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015001033A1 (de) | 2015-01-27 | 2016-07-28 | Leibniz-Institut für Photonische Technologien e. V. | Hochdurchsatz-Screening-System zur Durchführung von optischen Messungen |
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| Publication number | Publication date |
|---|---|
| CN103718038A (zh) | 2014-04-09 |
| CN103718038B (zh) | 2016-06-22 |
| EP2717052A2 (en) | 2014-04-09 |
| CA2837463C (en) | 2016-08-09 |
| US9459257B2 (en) | 2016-10-04 |
| IL229676A0 (en) | 2014-01-30 |
| JP2014515496A (ja) | 2014-06-30 |
| CA2837463A1 (en) | 2012-12-06 |
| WO2012165837A3 (ko) | 2013-02-07 |
| IL229676A (en) | 2016-10-31 |
| JP5917686B2 (ja) | 2016-05-18 |
| KR20120132668A (ko) | 2012-12-07 |
| EP2717052A4 (en) | 2014-10-29 |
| US20140113283A1 (en) | 2014-04-24 |
| KR101361652B1 (ko) | 2014-02-14 |
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