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CN106770086A - The fluorescence detection method and system of a kind of real-time fluorescence quantitative PCR instrument - Google Patents

The fluorescence detection method and system of a kind of real-time fluorescence quantitative PCR instrument Download PDF

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Publication number
CN106770086A
CN106770086A CN201611052722.7A CN201611052722A CN106770086A CN 106770086 A CN106770086 A CN 106770086A CN 201611052722 A CN201611052722 A CN 201611052722A CN 106770086 A CN106770086 A CN 106770086A
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CN
China
Prior art keywords
fluorescence
light
real
quantitative pcr
pcr instrument
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Pending
Application number
CN201611052722.7A
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Chinese (zh)
Inventor
叶锋
刘明坤
张雪峰
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Beijing Jingzhun Medical Technology Co Ltd
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Beijing Jingzhun Medical Technology Co Ltd
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Priority to CN201611052722.7A priority Critical patent/CN106770086A/en
Publication of CN106770086A publication Critical patent/CN106770086A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64Fluorescence; Phosphorescence
    • G01N21/6402Atomic fluorescence; Laser induced fluorescence
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/02Details
    • G01J1/04Optical or mechanical part supplementary adjustable parts
    • G01J1/0407Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0477Prisms, wedges

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

This application discloses a kind of fluorescence detection method of real-time fluorescence quantitative PCR instrument, including:LED light source sends light;The light incidence optical filtering forms exciting light after filtering;The exciting light enters incident optical;The light that incident optical sends is projected directly at the sample in sample cell;The fluorescence that sample is excited, by after prismatic decomposition, fluorescence channel is incident upon on camera successively by the size of wavelength, forms light spectrum image-forming again by launching fiber.The advantage of the application is:Be capable of achieving once whole channel fluorescence collections is achieved without switching optical filter, switching when saving multi-channel detection between optical filtering.The edge effect of the Mechanical Moving and CCD drainage patterns between different sample wells is avoided by fibre system.It is thus possible to realize short time, efficient detection.

Description

The fluorescence detection method and system of a kind of real-time fluorescence quantitative PCR instrument
Technical field
The present invention relates to the fluorescence detection method and system of a kind of real-time fluorescence quantitative PCR instrument.
Background technology
In molecule life field, polymerase chain reaction technology (Polymerase Chain Reaction, abbreviation PCR) It is conventional experimental technique, its general principle, similar to the natural reproduction process of DNA, is that vitro enzyme promotes synthesis specific DNA piece A kind of method of section, its specificity depends on the Oligonucleolide primers complementary with target sequence two ends.PCR it is basic by deformation, annealing, Extend three fundamental reaction steps to constitute, have the advantages that high specificity, sensitivity are high, easy to operate, time saving, cannot be only used for The basic research such as Gene Isolation, clone and nucleic acid sequence analysis, and the diagnosis of clinical disease is applied to more and more widely.It is real The instrument of existing Real-Time Fluorescent Quantitative PCR Technique is referred to as real-time fluorescence quantitative PCR instrument, and it is substantially exactly a temperature control device, energy Denaturation temperature, renaturation temperature, elongating temperature are accurately controlled.General principle is:Illuminator sends exciting light, by optics Component reaches the reaction tube with sample, and sample sends fluorescence after being excited.The fluorescence being inspired is arrived by optical module again Up to detector.Optical filtering is a part of optical module, can pass through the light of specific wavelength, and product is distinguished so as to reach Purpose.By the fluorescence of optical filtering by being captured by detector after optical module, the fluorescence after capture is turned by a series of photoelectricity After changing, input computer carries out calculating analysis.The common detector of fluorescent PCR has camera, PMT (photomultiplier), photoelectricity Diode etc..
Traditional fluorescence detecting system, exciting light is sent by light source, and exciting light is swashed by after incident light optical filtering Hair, the fluorescence after exciting is again by reaching detector (such as photodiode, camera) after detection light optical filtering.But no matter use Photodiode or camera, as detector, are all the fluorescence of the wavelength needed for being obtained using optical filtering.Multichannel is glimmering Light detection needs the fluorescence of various optical filterings, different wave length to select or rotate optical filtering by filter wheel;Or various optical filterings Mirror is arranged on a shaven head, is moved back and forth by shaven head, is hole-specifically scanned.Both optical filtering modes, are required for mechanical movement to fill Put, cannot otherwise obtain required fluorescence.And the introducing of Mechanical Moving structure (device) so that instrument become it is complicated, huge, Cost also remains high;More importantly motion causes that whole instrument is in a dynamic detecting system, easily triggers setting Standby failure, is that subsequent maintenance brings huge cost and burden.In addition, the optical system of common PCR instrument is normally at instrument top Portion.Sample of the excitation source in projecting sample cell after incident optical filtering, the fluorescence that sample is excited leads to again It is projected directly on the photoelectric detectors such as photosensitive receiving tube or CCD after crossing detection light optical filtering colour filter, so as to realize to be measured The target of sample amounts detection.Exciting light is irradiated to sample cell and excites fluorescence and realize detection, this side from sample base top Method is especially high to the cap quality requirement of example reaction pipe and agent plate, it is necessary to have high-transmittance, and is particularly easy to generation Light path is chaotic.
The content of the invention
The subject matter that the application is solved is to provide the fluorescence detection method and system of a kind of real-time fluorescence quantitative PCR instrument, To solve the technical problem of chaotic light path, scattering, light intensity exhaustion.
In order to solve the above-mentioned technical problem, the invention discloses a kind of fluorescence detection method of real-time fluorescence quantitative PCR instrument, It is characterised in that it includes:LED light source sends light;The light incidence optical filtering forms the exciting light of blueness after filtering;It is described to excite Light enters incident optical;The light that incident optical sends is projected directly at the sample in sample cell;Sample is excited Fluorescence again by launching fiber, by after prismatic decomposition, being incident upon on camera successively by the size of wavelength.
Invention achieves following effect:
Using light emitting diode as light source, the light that light source sends is formed after the blue incidence optical filterings of 510nm filter Exciting light, projects the sample in sample cell after being conducted through incident optical, sample is excited, and sends fluorescence.Fluorescence leads to again Cross launching fiber to conduct to prism, because prism there are different refractive indexes to the light of different wave length, by after the refraction of prism, pressing The light spectrum image-forming being divided into according to the size of wavelength is on camera.Computer calculates the intensity of the light of needs according to spectrum.Pass through Prismatic decomposition and optical fiber light-guiding, be capable of achieving once whole channel fluorescence collections is achieved without switching optical filter, saves many Switching during Air conduct measurement between optical filtering.The Mechanical Moving and CCD avoided by fibre system between different sample wells are adopted The edge effect of integrated mode.It is thus possible to realize short time, efficient detection.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes a part of the invention, this hair Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the fluorescence detection method of real-time fluorescence quantitative PCR instrument of the invention.
Fig. 2 is the structural representation of the fluorescence detecting system of real-time fluorescence quantitative PCR instrument of the invention
Specific embodiment
Some vocabulary have such as been used to censure specific components in the middle of specification and claim.Those skilled in the art should It is understood that hardware manufacturer may call same component with different nouns.This specification and claims are not with name The difference of title is used as distinguishing the mode of component, but the difference with component functionally is used as the criterion distinguished.Such as logical The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit In "." substantially " refer to that in receivable error range, those skilled in the art can solve described in the range of certain error Technical problem, basically reaches the technique effect.Additionally, " coupling " one word herein comprising it is any directly and indirectly electric property coupling Means.Therefore, if a first device is coupled to a second device described in text, representing the first device can direct electrical coupling The second device is connected to, or the second device is electrically coupled to indirectly by other devices or coupling means.Specification Subsequent descriptions be implement the application better embodiment, so it is described description be for the purpose of the rule for illustrating the application, It is not limited to scope of the present application.The protection domain of the application ought be defined depending on the appended claims person of defining.
The application is described in further detail below in conjunction with accompanying drawing, but not as the restriction to the application.Hereafter in order to Narration is convenient, hereinafter alleged " left side " " right side " " on " D score etc. is left and right in itself with accompanying drawing, upper and lower etc., and direction is consistent, " preceding End ", " rear end " or " end " etc. are front or rear relative to accompanying drawing." first ", " second " hereinafter etc. is to be subject to area in description Divide, not other particular meanings.
Embodiment one:
Refer to Fig. 1, a kind of fluorescence detection method of real-time fluorescence quantitative PCR instrument of the invention, including:LED light source 1 is sent out Light extraction;The light incidence optical filtering 2 forms exciting light after filtering;The exciting light enters incident optical;What incident optical sent Light is projected directly at the sample 3 in sample cell;The fluorescence that sample is excited passes through launching fiber again, by prism After 4 light splitting, fluorescence channel is incident upon on camera 5 successively by the size of wavelength, forms light spectrum image-forming.
Preferably, the wavelength of the fluorescence is 510-750nm.Specifically, the inspection of 120 fluorescence channels can be realized in theory Survey, greatly break through and improve the limitation of the most 4-5 bars fluorescence channels of existing quantitative real time PCR Instrument.By prismatic decomposition, can be real What now disposable whole channel fluorescence was gathered is achieved without switching optical filtering, optical filtering switching when saving multi-channel detection Time.
Preferably, the number of the fluorescence channel is 120.
Preferably, also include:Computer is calculated the light spectrum image-forming, the step of to obtain light intensity value.
Preferably, the optical filtering 2 is 500nm blue light optical filterings.
Preferably, including:LED light source 1, for sending light;Optical filtering 2, forms for receiving after the light incidence filters Exciting light;Incident optical, for receiving the exciting light;Sample 3, the light for directly receiving incident optical projection; Launching fiber, for receiving the fluorescence that sample is excited, by after the light splitting of prism 4, fluorescence channel press the size of wavelength according to It is secondary to be incident upon on camera 5, form light spectrum image-forming.
Preferably, the wavelength of the fluorescence is 510-750nm.
Preferably, the number of the fluorescence channel is 120.
Preferably, also include:Computer, for the light spectrum image-forming to be calculated, the step of to obtain light intensity value.
Preferably, the optical filtering 2 is 500nm blue light optical filterings.
Because method part has been described in detail to the embodiment of the present application, the system to being related in embodiment here Expansion with method corresponding part describes to omit, and repeats no more.Method is referred to for the description of particular content in system to implement The content of example is no longer specific here to limit.
Compared with prior art, a kind of fluorescence detection method of real-time fluorescence quantitative PCR instrument of the present invention, reaches Following effect:
Using light emitting diode as light source, the light that light source sends is formed after the blue incidence optical filterings of 510nm filter Exciting light, projects the sample in sample cell after being conducted through incident optical, sample is excited, and sends fluorescence.Fluorescence leads to again Cross launching fiber to conduct to prism, because prism there are different refractive indexes to the light of different wave length, by after the refraction of prism, pressing The light spectrum image-forming being divided into according to the size of wavelength is on camera.Computer calculates the intensity of the light of needs according to spectrum.Pass through Prismatic decomposition and optical fiber light-guiding, be capable of achieving once whole channel fluorescence collections is achieved without switching optical filter, saves many Switching during Air conduct measurement between optical filtering.The Mechanical Moving and CCD avoided by fibre system between different sample wells are adopted The edge effect of integrated mode.It is thus possible to realize short time, efficient detection.
Described above has shown and described some preferred embodiments of the application, but as previously described, it should be understood that the application Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and can be used for various other combinations, Modification and environment, and can be in application contemplated scope described herein, by above-mentioned teaching or the technology or knowledge of association area It is modified.And the change and change that those skilled in the art are carried out do not depart from spirit and scope, then all should be in this Shen Please be in the protection domain of appended claims.

Claims (10)

1. a kind of fluorescence detection method of real-time fluorescence quantitative PCR instrument, it is characterised in that including:
LED light source sends light;
The light incidence optical filtering forms exciting light after filtering;
The exciting light enters incident optical;
The light that incident optical sends is projected directly at the sample in sample cell;
The fluorescence that sample is excited again by launching fiber, by after prismatic decomposition, fluorescence channel press the size of wavelength according to It is secondary to be incident upon on camera, form light spectrum image-forming.
2. the fluorescence detection method of real-time fluorescence quantitative PCR instrument according to claim 1, it is characterised in that the fluorescence Wavelength be 510-750nm.
3. the fluorescence detection method of real-time fluorescence quantitative PCR instrument according to claim 2, it is characterised in that the fluorescence The number of passage is 120.
4. the fluorescence detection method of real-time fluorescence quantitative PCR instrument according to claim 1, it is characterised in that also include:Meter Calculation machine is calculated the light spectrum image-forming, the step of to obtain light intensity value.
5. the fluorescence detection method of real-time fluorescence quantitative PCR instrument according to claim 1, it is characterised in that the optical filtering Mirror is 500nm blue light optical filterings.
6. a kind of fluorescence detecting system of real-time fluorescence quantitative PCR instrument, it is characterised in that including:
LED light source, for sending light;
Optical filtering, exciting light is formed for receiving after the light incidence filters;
Incident optical, for receiving the exciting light;
Sample, the light for directly receiving incident optical projection;
Launching fiber, for receiving the fluorescence that sample is excited, by after prismatic decomposition, fluorescence channel presses the size of wavelength It is incident upon on camera successively, forms light spectrum image-forming.
7. the fluorescence detecting system of real-time fluorescence quantitative PCR instrument according to claim 6, it is characterised in that the fluorescence Wavelength be 510-750nm.
8. the fluorescence detecting system of real-time fluorescence quantitative PCR instrument according to claim 7, it is characterised in that the fluorescence The number of passage is 120.
9. the fluorescence detecting system of real-time fluorescence quantitative PCR instrument according to claim 8, it is characterised in that also include:Meter Calculation machine, for the light spectrum image-forming to be calculated, the step of to obtain light intensity value.
10. the fluorescence detecting system of real-time fluorescence quantitative PCR instrument according to claim 6, it is characterised in that the optical filtering Mirror is 500nm blue light optical filterings.
CN201611052722.7A 2016-11-24 2016-11-24 The fluorescence detection method and system of a kind of real-time fluorescence quantitative PCR instrument Pending CN106770086A (en)

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CN201611052722.7A CN106770086A (en) 2016-11-24 2016-11-24 The fluorescence detection method and system of a kind of real-time fluorescence quantitative PCR instrument

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113008854A (en) * 2021-03-03 2021-06-22 艾普拜生物科技(苏州)有限公司 Optical fiber array imaging detection device
CN114480111A (en) * 2022-02-15 2022-05-13 深圳阿斯克医疗有限公司 Real-time fluorescence quantitative PCR instrument

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101300478A (en) * 2005-11-03 2008-11-05 霍夫曼-拉罗奇有限公司 Analytical multi-spectral optical detection system
CN102341694A (en) * 2009-01-08 2012-02-01 It-Is国际有限公司 Optical system for chemical and/or biochemical reactions
CN105866090A (en) * 2016-06-03 2016-08-17 苏州百源基因技术有限公司 Ultraviolet visible light fluorescence detection system
CN105973855A (en) * 2016-06-03 2016-09-28 苏州百源基因技术有限公司 Infrared visible light fluorescence detection system
CN106030288A (en) * 2014-04-03 2016-10-12 株式会社日立高新技术 Fluorometric analyzer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101300478A (en) * 2005-11-03 2008-11-05 霍夫曼-拉罗奇有限公司 Analytical multi-spectral optical detection system
CN102341694A (en) * 2009-01-08 2012-02-01 It-Is国际有限公司 Optical system for chemical and/or biochemical reactions
CN106030288A (en) * 2014-04-03 2016-10-12 株式会社日立高新技术 Fluorometric analyzer
CN105866090A (en) * 2016-06-03 2016-08-17 苏州百源基因技术有限公司 Ultraviolet visible light fluorescence detection system
CN105973855A (en) * 2016-06-03 2016-09-28 苏州百源基因技术有限公司 Infrared visible light fluorescence detection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113008854A (en) * 2021-03-03 2021-06-22 艾普拜生物科技(苏州)有限公司 Optical fiber array imaging detection device
CN114480111A (en) * 2022-02-15 2022-05-13 深圳阿斯克医疗有限公司 Real-time fluorescence quantitative PCR instrument

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