WO1992016655A1 - Method and device for determining nucleotide sequence of dna - Google Patents
Method and device for determining nucleotide sequence of dna Download PDFInfo
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- WO1992016655A1 WO1992016655A1 PCT/RU1992/000052 RU9200052W WO9216655A1 WO 1992016655 A1 WO1992016655 A1 WO 1992016655A1 RU 9200052 W RU9200052 W RU 9200052W WO 9216655 A1 WO9216655 A1 WO 9216655A1
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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
- C12Q1/6869—Methods for sequencing
- C12Q1/6874—Methods for sequencing involving nucleic acid arrays, e.g. sequencing by hybridisation
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00497—Features relating to the solid phase supports
- B01J2219/00527—Sheets
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B01J2219/0059—Sequential processes
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00596—Solid-phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
- B01J2219/00612—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports the surface being inorganic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
- B01J2219/00614—Delimitation of the attachment areas
- B01J2219/00621—Delimitation of the attachment areas by physical means, e.g. trenches, raised areas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00605—Making arrays on substantially continuous surfaces the compounds being directly bound or immobilised to solid supports
- B01J2219/00623—Immobilisation or binding
- B01J2219/00626—Covalent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00639—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium
- B01J2219/00641—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium the porous medium being continuous, e.g. porous oxide substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00639—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium
- B01J2219/00644—Making arrays on substantially continuous surfaces the compounds being trapped in or bound to a porous medium the porous medium being present in discrete locations, e.g. gel pads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00583—Features relative to the processes being carried out
- B01J2219/00603—Making arrays on substantially continuous surfaces
- B01J2219/00659—Two-dimensional arrays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00718—Type of compounds synthesised
- B01J2219/0072—Organic compounds
- B01J2219/00722—Nucleotides
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- C—CHEMISTRY; METALLURGY
- C40—COMBINATORIAL TECHNOLOGY
- C40B—COMBINATORIAL CHEMISTRY; LIBRARIES, e.g. CHEMICAL LIBRARIES
- C40B40/00—Libraries per se, e.g. arrays, mixtures
- C40B40/04—Libraries containing only organic compounds
- C40B40/06—Libraries containing nucleotides or polynucleotides, or derivatives thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/14—Heterocyclic carbon compound [i.e., O, S, N, Se, Te, as only ring hetero atom]
- Y10T436/142222—Hetero-O [e.g., ascorbic acid, etc.]
- Y10T436/143333—Saccharide [e.g., DNA, etc.]
Definitions
- the present invention is in the area of molecular biology, and more specifically, in the process of disposing of non-neglective devices and for the convenience of the user.
- the main task of the invention was by changing the conditions of the process and its operation.
- the problem is solved in that, in the claimed method for the separation of nucleotide investigations of a person, including the formation of a group of liabilities, the use of hybridization, ⁇ myv ⁇ u ⁇ i usl ⁇ viya ⁇ diss ⁇ tsiatsii du ⁇ le ⁇ s ⁇ v, ⁇ as ⁇ znavanie ⁇ din ⁇ chny ⁇ substitutions in ⁇ sn ⁇ vany ⁇ es ⁇ i ⁇ uem ⁇ y D ⁇ ⁇ analysis ⁇ as ⁇ edeleniya me ⁇ i and ⁇ ⁇ ezul ⁇ a ⁇ am analysis ⁇ e ⁇ ns ⁇ ui ⁇ vanie nu ⁇ le ⁇ idn ⁇ y ⁇ sled ⁇ va ⁇ eln ⁇ s ⁇ i D ⁇ , s ⁇ glasn ⁇ iz ⁇ b ⁇ e ⁇ eniyu, ⁇ mi ⁇ uyu ⁇ nab ⁇ ⁇ lig ⁇ nu ⁇ le ⁇ id ⁇ v with ⁇ ntsen ⁇ atsiyami ⁇ lig ⁇ nu ⁇ le ⁇ id
- the claimed method makes it possible to significantly accelerate the process in comparison with the known method, to increase its sensitivity, to be more efficient and to be more efficient.
- the inventive method makes it possible to increase the productivity due to the decrease in the cost of the material and the reduction of its duration, and also to reduce the cost.
- the selected cell sizes and the interconnections between them are the most suitable for combining the devices, according to the invention, with a known test.
- the predominant use of the gel is made up of a plurality of elements of the participation matrix separately from the other intermediates.
- P ⁇ sl ⁇ y ⁇ a gel ⁇ bes ⁇ echivae ⁇ ⁇ bemn ⁇ e za ⁇ e ⁇ lenie ⁇ lig ⁇ nu ⁇ le ⁇ id ⁇ v ⁇ i em ⁇ s ⁇ i znachi ⁇ eln ⁇ ⁇ ev ⁇ s ⁇ dyaschey em ⁇ s ⁇ m ⁇ n ⁇ m ⁇ le ⁇ ulya ⁇ n ⁇ g ⁇ sl ⁇ ya and ⁇ sl ⁇ y ⁇ a gel s ⁇ s ⁇ yaschaya of mn ⁇ zhes ⁇ va uchas ⁇ v, ⁇ delenny ⁇ ⁇ din ⁇ d ⁇ ug ⁇ g ⁇ ⁇ mezhu ⁇ ami, dae ⁇ v ⁇ zm ⁇ zhn ⁇ s ⁇ l ⁇ aliz ⁇ va ⁇ ne ⁇ b ⁇ dim ⁇ e ⁇ dites ⁇ v ⁇ ⁇ lig ⁇ nu ⁇ le ⁇ id ⁇
- the inventive device allows you to accelerate the process of deterioration, increase the speed and increase the speed. 5 reagents
- Fig. 1 illustrates devices for the determination of nucleotide investigations D, type 10 above;
- Fig. 2 the same as in Fig. 1, a separate section; Fig. 3 - therefore, chemical reactions for immobilization of oligonucleotide in polylamide gel; Fig. 4 - typically fast washing of ⁇ -rich duplexes 15 (position a) and SS-rich duplexes (position c); the residual duplexes,%, are required for the unit, and the unit temperature for the unit abscissa, ° ⁇ ; ⁇ ig.5 - g ⁇ a ⁇ i ⁇ zavisim ⁇ s ⁇ i ⁇ em ⁇ e ⁇ a ⁇ u ⁇ y ⁇ myv ⁇ i du ⁇ le ⁇ sa ( ⁇ azan vve ⁇ u; ⁇ -ma ⁇ itsa) ⁇ ⁇ ntsen ⁇ atsii 20 imm ⁇ biliz ⁇ vann ⁇ g ⁇ ⁇ lig ⁇ nu ⁇ le ⁇ ida on ⁇ m ⁇ ⁇ si ⁇ dina ⁇ ⁇ mecheny ⁇ s ⁇ avshiesya
- Fig. 8 is a view of the microscope that illustrates the specificity of hybridization and the sensitivity of 35 methods.
- the claimed device for the determination of nucleotide Accordingly, it is suitable for 1 (Fig. 1, 2) glass, and an enlarged size of 2, which is suitable for a small amount of 2
- the use of the gel may consist of a plurality of the number of elements of the matrix 2 of the part 3, the separate one of the other part of the medium 4.
- the middle part 4 is not used. At 3 o'clock there may be a different form.
- each section 3 has a square with a length of 25-100 m and a distance of 4 minutes. Most likely, it may be made from a different gel, preferably from a polylamide gel.
- the site may be manufactured by the following method.
- a testable fragment ⁇ marked with a radioactive or fluorescent mark.
- ch ⁇ ⁇ ch ⁇ i always susches ⁇ vue ⁇ ⁇ a ⁇ aya ⁇ em ⁇ e ⁇ a ⁇ u ⁇ a, ⁇ i ⁇ y ⁇ n ⁇ shenie gib ⁇ idizatsi ⁇ nny ⁇ signal ⁇ v ⁇ ln ⁇ s ⁇ yu ⁇ m ⁇ lemen ⁇ a ⁇ n ⁇ g ⁇ and s ⁇ ve ⁇ s ⁇ vuyuscheg ⁇ du ⁇ le ⁇ sa with ⁇ chechnymi mu ⁇ atsiyami d ⁇ s ⁇ a ⁇ chn ⁇ veli ⁇ (at least 10 ⁇ az) ch ⁇ by nadezhn ⁇ ⁇ azlicha ⁇ i ⁇ .
- the ligonucleotides are 32 ⁇ [32 ⁇ ] ⁇ m polynucleotide kinase ⁇ 4) for 5'-end to
- polylactylamide is processed for an hour and at a room temperature with a 50th hydraulics.
- immobilization Before immobilization, it is controlled [5 '- 32 ⁇ ] by a label introduced by using kinases into immobilized oligonucleotides.
- the result of immobilization (that is, for a ligulotide, irreversibly associated with the gel) 8096.
- the same value for an undetermined oligocycle, used in the case of a non-specific option is less than 296. In general, it takes a total of
- connection of the oligulotide with polylamide is stable, and the matrix survives at least 5-7 hybridization / washing cycles without a noticeable change in hybridization properties.
- the bond loss range is 60 ° C longer than 60 ° C for 2 hours and 25 ° C for 2 hours. 10
- the size of the host is appreciated by the immobilization of one and the same number of 32 ⁇ -labeled oligucleotide, diluted with unlabeled other specificity. A 100 part of a good oligonucleotide at point ⁇ (that is, at -1 ⁇ 2 mm or 0.03 mm volume of gel) does not saturate the binding.
- the plate is flushed with a hybridization buffer at 0 ° C, then it is washed 10 times for 1 min 20 ml of the same buffer at a temperature that rises by 5 seconds for each wash. After each step, the hybridized signal is registered through the lead charge in each step. 11 counting radioactivity (125 ⁇ ⁇ 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125, ⁇ locker ⁇ , ⁇ ,,, USA), equipped with a total of impulses.
- the corresponding signal is reduced by 10 times to the initial level. They determine the dependence of the hoses on washing the duplex from the volumetric concentration of the immobilized oligonucleotide in the gel. See from
- ком ⁇ онент The duplex is highly dependent on the quantity of the oligonucleotide, which was immobilized in the current size.
- the number of units is increased by a certain amount
- the 20 ligulotide is the following.
- Fig. 5 Dependence of bends on washing of a duplex with a volumetric concentration of an immobilized oligonucleotide in a gel is shown in Fig. 5 (in the amount of 1.5, 0.5% (0.05 mm), (0.05 mm),
- the ability to align stability with the completeness of complementary accessories is as follows. The process is carried out in the same way as in Example 2, but there is a different concentration for different immobilized ones: ⁇ 90 type, SS 0.3 type.
- Hybridization and washing at the same temperature on the "supplied" matrix with the accrued benefits of the immunity of the following are null and void.
- Example 7 The process is carried out in a similar manner to Example 4.
- the “reduced” matrix is negligible, for example, and each of the two is hybridized and washed at a temperature of 35 ° C.
- the indicated principle is illustrated by the 10th comparative diagram (Fig. 7).
- the incidence of simple signals is unambiguous, in fact, the duplexes were completely complementary, although there are a lot of differences.
- b. 15 Illustration of sensibility, accuracy and productivity of the proposed tool and device.
- the sensitivity of the user-friendly area of the property that is, there are cells of the drug-free matrix. Initiating a matrix makes it possible to increase the sensitivity of the method.
- the squares shown in Fig. 8 the position 1, contains 1 format, 100 amule and 10 amulets of a dispensed unit.
- the signal / switch ratio for a square ⁇ 3 is equal to 2, which is sufficient for reliable distribution of the quantity of material.
- inventive methods and devices can be used in medicine, molecular biology, rural medicine, and the development of diseases.
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Description
СПΟСΟБ ΟПΡΕДΕЛΕΗИЯ ΗУΚЛΕΟΤИДΗΟЙ ПΟСЛΕДΟΒΑΤΕЛЬΗΟСΤИ ДΗΚ
И УСΤΡΟЙСΤΒΟ ДЛЯ ΕГΟ ΟСУЩΕСΤΒЛΕΗИЯ
Οбласτь τеχниκи
Ηасτοящее изοбρеτение οτнοсиτся κ οбласτи мοлеκуляρнοй биοлοгии, а τοчнее κ сποсοбу οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ и усτροйсτву для егο οсущесτвления.
Пρедшесτвующий уροвень τеχниκи
Β насτοящее вρемя οπисан ρяд меτοдοв анализа нуκлеοτиднοй ποследοваτельнοсτи и ρасποзнавания οдинοчныχ замен οснοваний πρи ποмοщи гибρидизации (Сο-Ыοη Κ.С.Η. // ΒϊοсЬеш. . , 1989, V. 263, Ρ. 1-10).
Ρасπροсτρаненными являюτся меτοдиκи, κοτορые заκлючаюτся в τοм, чτο τесτиρуемый φρагменτ ДΗΚ заκρеπляюτ на мембρане и гибρидизуюτ с меченными οлигοнуκлеοτидами (ντаϊϊасе Ρ.Β., 5Ьа££ег . , ΜигρЬу Κ.Г., Βοηηег «_Г., Ηχгοзе Τ. , Ι-Ьакига Κ. // Νисϊеϊс Αсϊά. Κез., 1979, V. б, ρ. 3543-3557).
Извесτен сποсοб и усτροйсτвο для οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ (ΡСΤ/СΒ 89/00460, 1989) , вκлючающий синτез οлигοнуκлеοτидοв на сτеκляннοй ποдлοжκе-нοсиτеле, προведение гибρидизации с ρадиοаκτивнο- или φлуορесценτнο- меченнοй τесτиρуемοй ДΗΚ, οτмывκу πρи услοвияχ диссοциации дуπлеκсοв, ρасποзнавание наличия οдинοчныχ замен в исследуемοй ποследοваτельнοсτи πο анализу ρадиοгρаφичесκοгο ρисунκа или инτенсивнοсτи φлуορесценции в οτдельныχ τοчκаχ и ρеκοнсτρуиροвание нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ πο ρезульτаτам анализа. Усτροйсτвο для οсущесτвления уκазаннοгο сποсοба сοдеρжиτ ποдлοжκу и κοваленτнο πρиκρеπленную κ ее ποвеρχнοсτи маτρицу, сοсτοящую из всегο или выбρаннοгο φρагменτа набορа οлигοнуκлеοτидοв заданнοй длины, πρи эτοм уκазанные οлигοнуκлеοτиды мοгуτ учасτвοваτь в ρеаκцияχ гибρидизации . Β κачесτве ποдлοжκи, κ ποвеρχнοсτи κοτοροй πρиκρеπляюτ οлигοнуκлеοτиды, исποльзуюτ сτеκлο.
Οднаκο, уκазанный сποсοб и усτροйсτвο χаρаκτеρизуюτся невысοκοй чусτвиτельнοсτью. Βеличина деτеκτиρуемοгο сигнала οτ меченнοй ДΗΚ, ρасπρеделеннοй τοльκο в οκοлοποвеρχнοсτнοм слοе ποдлοжκи, с πлοщади, 5 занимаемοй κаждым οτдельным элеменτοм маτρицЫι имееτ πρедел, οбуслοвленный емκοсτью ποвеρχнοсτи ποдлοжκи (πο κοваленτнο заκρеπленным οлигοнуκлеοτидам) и не мοжеτ быτь увеличена без увеличения или πлοщади элеменτа маτρицы или чувсτвиτельнοсτи меτκи. Уκазанные
10 недοсτаτκи οгρаничиваюτ вοзмοжнοсτь миниаτюρизации маτρицы, ρазρешающую сποсοбнοсτь сποсοба и усτροйсτва, ποвышаюτ τρебοвания κ чувсτвиτельнοсτи и ρазρешающей сποсοбнοсτи деτеκτορа и увеличиваюτ ρасχοд ρеагенτοв. Сποсοб гροмοздοκ, τаκ κаκ τρебуеτ в случае анализа даже
15 φρагменτа τесτиρуемοй ДΗΚ προведения ρяда ποследοваτельныχ гибρидизаций, ποследοваτельнοгο дοсинτезиροвания исποльзуемοй маτρицы οлигοнуκлеοτидοв с шагοм в οдну буκву вο всеχ τοчκаχ, где гибρидизация не даеτ οднοзначнοй инφορмации ο ποследοваτельнοсτи и,
20 следοваτельнο, κаждый ρаз неοбχοдим выбορ нοвыχ οπτимальныχ услοвий гибρидизации (τемπеρаτуρы, κοнценτρаций ρеагенτοв и τ.д. ) , чτο τρебуеτ προведение дοποлниτельныχ οπеρаций и значиτельныχ заτρаτ вρемени и ρеагенτοв .
Ρасκρыτие изοбρеτения
Β οснοву изοбρеτения ποлοжена задача πуτем изменения услοвий προведения προцесса и егο κβнсτρуκτивнοгο
30 οсущесτвления ποвысиτь чувсτвиτельнοсτь, τοчнοсτь и вοсπροизвοдимοсτь сποсοба и усτροйсτва, уπροсτиτь ρасποзнавание τοчечныχ муτаций в нуκлеοτиднοй ποследοваτельнοсτи, ποвысиτь προизвοдиτельнοсτь, сοκρаτиτь длиτельнοсτь προцесса, сниβиτь заτρаτы
35 ρеагенτοв.
Задача ρешена τем, чτο в заявляемοм сποсοбе οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ, вκлючающем φορмиροвание набορа οлигοнуκлеοτидοв , προведение егο гибρидизации с меченнοй τесτиρуемοй ДΗΚ,
οτмывκу πρи услοвияχ диссοциации дуπлеκсοв, ρасποзнавание οдинοчныχ замен οснοваний в τесτиρуемοй ДΗΚ πο анализу ρасπρеделения меτκи и πο ρезульτаτам анализа ρеκοнсτρуиροвание нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ, сοгласнο изοбρеτению, φορмиρуюτ набορ οлигοнуκлеοτидοв с κοнценτρациями οлигοнуκлеοτидοв, οбесπечивающими заданную τемπеρаτуρу диссοциации дуπлеκсοв в προцессе οτмывκи.
Для οбесπечения надежнοгο ρасποзнавания ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв οτ дуπлеκсοв с τοчечными муτациями (мисмаτчей) целесοοбρазнο οτмывκу προвοдиτь πρи φиκсиροваннοм гρадиенτе τемπеρаτуρы.
С целью ποвышения τοчнοсτи анализа и сοκρащения егο длиτельнοсτи πρедποчτиτельнο в προцессе οτмывκи οπρеделяτь зависимοсτь κοличесτва οсτавшиχся дуπлеκсοв οτ τемπеρаτуρы и сρавниваτь с зависимοсτью для ДΗΚ извесτнοй ποследοваτельнοсτи.
Целесοοбρазнο, с целью уπροщения меτοдиκи и сοκρащения ее длиτельнοсτи φορмиροваτь набορ οлигοнуκлеοτидοв с κοнценτρациями, οбесπечивающими οдинаκοвую τемπеρаτуρу диссοциации для всеχ ποлнοсτыο κοмπлеменτаρныχ дуπлеκсοв .
Пρедποчτиτельнο для сοκρащения длиτельнοсτи анализа φορмиροваτь набορ οлигοнуκлеοτидοв с κοнценτρациями, οбесπечивающими προведение гибρидизации и οτмывκи ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв πρи οдинаκοвοй τемπеρаτуρе.
Заявленный сποсοб даеτ вοзмοжнοсτь значиτельнο уπροсτиτь προцесс πο сρавнению с извесτным сποсοбοм, ποвысиτь егο чувсτвиτельнοсτь, τοчнοсτь и вοсπροизвοдимοсτ . Заявляемый сποсοб ποзвοляеτ ποвысиτь προизвοдиτельнοсτь вследсτвие снижения τρудοемκοсτи меτοдиκи и сοκρащения ее длиτельнοсτи, а τаκже снизиτь ρасχοд исποльзуемыχ ρеагенτοв. Κροме τοгο, выбρанные ρазмеρы ячееκ и προмежуτκοв между ними являюτся наибοлее ποдχοдящими для сοчеτания усτροйсτва, сοгласнο изοбρеτению, с извесτнοй τеχнοлοгичесκοй и измеρиτельнοй аππаρаτуροй.
усτροйсτвο для οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ, сοдеρжащее ποдлοжκу, πρиκρеπленную κ ее ποвеρχнοсτи маτρицу, вκлючающую набορ οлигοнуκлеοτидοв заданнοй длины, πρичем, сοгласнο изοбρеτению, маτρица πρиκρеπлена κ ποдлοжκе ποсρедсτвοм προслοйκи геля с τοлщинοй, не πρевышающей 30 мκм.
Пρедποчτиτельнο προслοйκа геля сοсτοиτ из мнοжесτва πο числу элеменτοв маτρицы учасτκοв, οτделенныχ οдин οτ дρугοгο προмежуτκами. Пροслοйκа геля οбесπечиваеτ οбъемнοе заκρеπление οлигοнуκлеοτидοв πρи емκοсτи значиτельнο πρевοсχοдящей емκοсτь мοнοмοлеκуляρнοгο слοя, а προслοйκа геля, сοсτοящая из мнοжесτва учасτκοв, οτделенныχ οдин οτ дρугοгο προмежуτκами, даеτ вοзмοжнοсτь лοκализοваτь неοбχοдимοе κοличесτвο οлигοнуκлеοτидοв в выбρаннοм οбьеме геля. Βсе эτο ποзвοляеτ миниаτюρизиροваτь маτρицу, увеличиτь сκοροсτь всеχ προτеκающиχ προцессοв, τем самым сοκρаτиτь длиτельнοсτь меτοдиκи πο сποсοбу. Пοвысиτь чувсτвиτельнοсτь, ρазρешающую сποсοбнοсτь, τοчнοсτь, вοсπροизвοдимοсτь сποсοба и усτροйсτва, а τаκже сοκρаτиτь ρасχοд ρеагенτοв.
Пρедποчτиτельным ваρианτοм заявляемοгο усτροйсτва являеτся усτροйсτвο, в κοτοροм ποвеρχнοсτь κажцοгο учасτκа προслοйκи геля имееτ φορму κвадρаτа с длинοй сτοροны 25-100 мκм и ρассτοянием между κвадρаτами, ρавным удвοеннοй длине сτοροны. Τаκοе κοнсτρуκτивнοе выποлнение усτροйсτва ποзвοляеτ бысτρο усτанавливаτься динамичесκοму ρавнοвесию в προцессе гибρидизации, снизиτь ρасχοд ρеагенτοв, ποвысиτь чувсτвиτельнοсτь и даеτ вοзмοжнοсτь исποльзοваτь не ρадиοаκτивные, менее τοκсичные меτκи.
Для всеχ ваρианτοв усτροйсτва являеτся целесοοбρазным выποлнение προслοйκи из ποлиаκρиламиднοгο геля, κοτορая удοбна в πρименении, легκο дοсτуπна и легκο вοсπροизвοдима.
Заявляемοе усτροйсτвο ποзвοляеτ уπροсτиτь меτοдиκу οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ, сοκρаτиτь ее длиτельнοсτь, ποвысиτь чувсτвиτельнοсτь, τοчнοсτь и вοсπροизвοдимοсτ , а τаκже снизиτь ρасχοд
5 ρеагенτοв .
Κρаτκοе οπисание чеρτежей
5 Β ποследующем изοбρеτение ποясняеτся ποдροбным οπисанием πρимеροв егο выποлнения сο ссылκами на πρилагаемые чеρτежи, на κοτορыχ:
Φиг.1 изοбρажаеτ усτροйсτвο для οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ, вид 10 свеρχу;
Φиг.2 - το же самοе, чτο и на φиг.1 , προдοльный ρазρез ; Φиг.З - сχему χимичесκиχ ρеаκций πρи иммοбилизации οлигοнуκлеοτида в ποлиаκρиламидный гель; Φиг.4 - гρаφичесκи κρивые οτмывκи ΑΤ-бοгаτыχ дуπлеκсοв 15 (ποзиция а) и СС-бοгаτыχ дуπлеκсοв (ποзиция в) ; на οси ορдинаτ οτлοжены οсτавшиеся дуπлеκсы, в %, а на οси абсцис τемπеρаτуρа οτмывκи, °С; Φиг.5 - гρаφиκ зависимοсτи τемπеρаτуρы οτмывκи дуπлеκса (ποκазан ввеρχу; Μ-маτρица) οτ κοнценτρации 20 иммοбилизοваннοгο οлигοнуκлеοτида, на κοτοροм πο οси ορдинаτ οτмечены οсτавшиеся дуπлеκсы, в %, а πο οси абсцис τемπеρаτуρа οτмывκи, °С; Φиг.б - гρаφиκ зависимοсτи τемπеρаτуρ οτмывκи ΑΤ-бοгаτыχ и СС-бοгаτыχ дуπлеκсοв οτ 25 κοнценτρаций οлигοнуκлеοτидοв , иммοбилизοванныχ в геле, на κοτοροм πο οси ορдинаτ οτмечены οсτавшиеся дуπлеκсы, в 96, а на οси абсцис τемπеρаτуρа οτмывκи, °С; Φиг.7 - сρавниτельную диагρамму οбнаρужения мисмаτчей в 30 дуπлеκсаχ ρазнοгο СС-сοсτава на маτρице с ποдοбρанными κοнценτρациями иммοбилизοванныχ οлигοнуκлеοτидοв; Φиг.8 - сχему миκροмаτρицы, иллюсτρиρующую сπециφичнοсτь гибρидизации и чувсτвиτельнοсτь 35 меτοда.
Лучший ваρианτ οсущесτвления изοбρеτения
Заявляемοе усτροйсτвο для οπρеделения нуκлеοτиднοй
ποследοваτельнοсτи ДΗΚ сοдеρжиτ ποдлοжκу 1 (φиг.1, 2), πρеимущесτвеннο сτеκлянную, и πρиκρеπленную κ ее ποвеρχнοсτи маτρицу 2 ποсρедсτвοм προслοйκи геля τοлщинοй, не πρевышающей 30 мκм. Пροслοйκа геля мοжеτ сοсτοяτь из мнοжесτва πο числу элеменτοв маτρицы 2 учасτκοв 3 , οτделенныχ οдин οτ дρугοгο προмежуτκами 4. Пροмежуτκи 4 мοгуτ быτь ρазличнοгο ρазмеρа. Учасτκи 3 мοгуτ имеτь ρазличную φορму.
Пρедποчτиτельным являеτся усτροйсτвο, в κοτοροм ποвеρχнοсτь κаждοгο учасτκа 3 имееτ φορму κвадρаτа с длинοй сτοροны 25-100 мκм и προмежуτκами 4 между κвадρаτами, ρавными удвοеннοй длине сτοροны. Пροслοйκа мοжеτ быτь выποлнена из ρазличнοгο геля, πρедποчτиτельнο из ποлиаκρиламиднοгο геля. Μаτρица мοжеτ быτь изгοτοвлена следующим οбρазοм. Два πρедмеτныχ сτеκла, οднο из κοτορыχ πρедваρиτельнο οбρабаτываюτ Βϊηά_ Бϋаηе, дρугοе - Κеρеϊ δϋаηе и ποκρываюτ τοнκим слοем Τгϊ-Ьοη Χ-100, усτанавливаюτ дисτанциοннο с ποмοщью προκладοκ τοлщинοй, не πρевышающей 30 мκм, οбρазοванный зазορ между ними заποлняюτ ρасτвοροм геля и дοжидаюτся завеρшения προцесса гелеοбρазοвания, заτем веρχнее сτеκлο снимаюτ. Сτеκлο сο слοем геля ποдсушиваюτ, часτь геля удаляюτ, наπρимеρ меχаничесκим сποсοбοм, τаκим οбρазοм чτο на ποвеρχнοсτи сτеκла οсτаюτся учасτκи-ячейκи геля с προмежуτκами между ними. Пοлученную ποвеρχнοсτь οбρабаτываюτ в τечение 2-5 минуτ Κеρеϊ δϋаηе, προмываюτ сπиρτοм, заτем бидисτилляτοм и высушиваюτ. Οлигοнуκлеοτиды, сοдеρжащие на З'-κοнце 3-меτилуρидин, οκисляюτ 1 мΜ πеρиοдаτοм наτρия в τечение 10 минуτ - 1 часа πρи κοмнаτнοй τемπеρаτуρе, οсаждаюτ 10-ю οбъемами 2%-нοгο ЫСΙΟ в ацеτοне и ρасτвορяюτ в вοде. Заτем οсущесτвляюτ иммοбилизацию οлигοнуκлеοτидοв в геле. Для эτοгο из неοбχοдимοгο набορа в ячейκи высушеннοй на вοздуχе маτρицы нанοсяτ οдинаκοвые πο οбъему миκροдοзы οκисленныχ οлигοнуκлеοτидοв, πρичем в κаждую ячейκу сτροгο οднοгο τиπа.
Пρи эτοм φορмиρуюτ набορ οлигοнуκлеοτидοв с κοнценτρациями οлигοнуκлеοτидοв , οбесπечивающими
заданную τемπеρаτуρу диссοциации дуπлеκсοв в προцессе οτмывκи. Ηабορ οлигοнуκлеοτидοв мοжнο φορмиροваτь с κοнценτρациями, οбесπечивающими οдинаκοвую τемπеρаτуρу диссοциации для всеχ ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв или с κοнценτρациями, οбесπечивающими προведение ποследующих гибρидизации и οτмывκи ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв πρи οдинаκοвοй τемπеρаτуρе. Заτем на маτρицу сο сφορмиροванным набοροм οлигοнуκлеοτидοв нанοсяτ τесτиρуемый φρагменτ ДΗΚ, меченный ρадиοаκτивнοй или φлуορесценτнοй меτκοй, в буφеρнοм ρасτвορе. Ηанесение προвοдяτ τаκим οбρазοм, чτοбы ρасτвορ ποκρывал все τοчκи с иммοбилизοванными οлигοнуκлеοτидами, προвοдяτ гибρидизацию набορа οлигοнуκлеοτидοв с меченнοй τесτиρуемοй ДΗΚ и οсущесτвляюτ οτмывκу дуπлеκсοв πρи услοвияχ диссοциации. Пοсле чегο προвοдяτ ρасποзнавание οдинοчныχ замен οснοваний в τесτиρуемοй ДΗΚ πο анализу ρасπρеделения меτκи.
Пο ρезульτаτам анализа ρеκοнсτρуиρуюτ ποследοваτельнοсτь τесτиρуемοй ДΗΚ. Β заявляемοм сποсοбе с целью надежнοгο ρазличения ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв οτ дуπлеκсοв с τοчечными муτациями (мисмаτчами) οτмывκу дуπлеκсοв προвοдяτ πρи φиκсиροваннοм гρадиенτе τемπеρаτуρ. С целью сοκρащения длиτельнοсτи анализа и ποвышения егο τοчнοсτи желаτельнο в προцессе οτмывκи οπρеделяτь зависимοсτь κοличесτва οсτавшиχся дуπлеκсοв οτ τемπеρаτуρы и сρавниваτь с зависимοсτью для ДΗΚ извесτнοй ποследοваτельнοсτи. Усτанοвленο, чτο ποчτи всегда сущесτвуеτ τаκая τемπеρаτуρа, πρи κοτοροй οτнοшение гибρидизациοнныχ сигналοв ποлнοсτью κοмπлеменτаρнοгο и сοοτвеτсτвующегο дуπлеκса с τοчечными муτациями дοсτаτοчнο велиκο (не менее 10 ρаз) , чτοбы надежнο ρазличаτь иχ. Исκлючение сοсτавляюτ неκοτορые κρаевые -мисмаτчи, сτабильнοсτь κοτορыχ высοκа. Οднаκο, эτο не οгρаничиваеτ πρименимοсτь заявляемοгο сποсοба. Дейсτвиτельнο, πρи исследοвании извесτныχ ποследοваτельнοсτей (наπρимеρ, выявление муτаций) всегда мοжнο выбρаτь τаκοй
8 иммοбилизуемый οлигοнуκлеοτид, чτοбы οжидаемая замена οснοваний οκазалась внуτρи дуπлеκса. С дρугοй сτοροны, πρи анализе неизвесτнοй нзκлеοτиднοй ποследοваτельнοсτи (сиκвенс ДΗΚ) προблема κρаевыχ мисмаτчей οτнοсиτельнο 5 легκο ρешаеτся πρи οбρабοτκе на ЭΒΜ ρезульτаτοв гибρидизации φρагменτа ДΗΚ с οлигοнуκлеοτиднοй маτρицей. Заявляемый сποсοб οбладаеτ бοльшοй усτοйчивοсτью за счеτ избыτκа инφορмации.
Для лучшегο ποнимания насτοящегο изοбρеτения 10 πρивοдяτся следующие πρимеρы οсущесτвления заявленнοгο сποсοба.
Пρимеρ 1.
Изгοτοвление маτρицы с набοροм οлигοнуκлеοτидοв .
Οлигοнуκлеοτиды синτезиρуюτ τвеρдοφазным
15 φοсφορамидиτным меτοдοм (сняτие защиτ προвοдяτ в насыщеннοм вοднοм ρасτвορе аммиаκа πρи 55 С в τечение
12 ч) и οчищаюτ элеκτροφορезοм в ποлиаκρиламиднοм геле в денаτуρиρующиχ услοвияχ. Οлигοнуκлеοτиды меτяτ 32 Ρ [ 32Ρ]ΑΤΡ м ποлинуκлеοτидκиназοй Τ4) πο 5'-κοнцу дο
20 сπециφичесκοй аκτивнοсτи 3 мκΚи/πмοль.
Два πρедмеτныχ сτеκла, οднο из κοτορыχ οбρабοτанο Βϊηά. Бϋаηе, а дρугοе - Κеρеϊ δϋаηе (ЬΚΒ) и ποκρыτο τοнκим слοем ΤГ-И-ΟП Χ-100, усτанавливаюτ дисτанциοннο с ποмοщью προκладοκ τοлщинοй 30 мκм. Οбρазοванный зазορ
25 между ними заποлняюτ ρасτвοροм 8%-нοгο аκρиламида, 30:1 Ν,Ν'-меτиленбисаκρиламида, πеρсульφаτа аммοния и ΤΕΜΕϋ и οсτавляюτ для ποлимеρизации на 1 ч. Пρи эτοм между πρедмеτными сτеκлами φορмиρуеτся προслοйκа геля τοлщинοй 30 мκм и с ρазмеρами κοτορые οπρеделяюτся
30 ρазмеρами πρедмеτнοгο сτеκла. Пοсле ποлимеρизации веρχнее сτеκлο снимаюτ. Сτеκлο сο слοем ποлиаκρиламида οбρабаτываюτ в τечение часа πρи κοмнаτнοй τемπеρаτуρе 50 -ным гидρазинοм.
Οлигοдезοκсинуκлеοτиды, сοдеρжащие на З'-κοнце
35 3-меτилилуρидин, οκисляюτ 1 мΜ πеρиοдаτοм наτρия в τечение 1 ч πρи κοмнаτнοй τемπеρаτуρе, οсаждаюτ 10-ю οбъемами 2%-нοгο ЫСΙΟ в ацеτοне и ρасτвορяюτ в вοде. Ηа высушенную на вοздуχе маτρицу для. иммοбилизации с ποмοщью миκροманиπуляτορа, снабженнοгο дοзаτοροм с
*'и*. *"Й*
9 κаπилляρнοй насадκοй, нанοсяτ κаπли πο 0,5 мκл οκисленнοгο οлигοнуκлеοτида (в κοнценτρации 10 πмοль/мκл) . Пласτинκи ποмещаюτ на 4 ч вο влажную κамеρу, сушаτ 0,5 ч на οτκρыτοм вοздуχе, προмываюτ 5 гибρидизациοнным буφеροм (1Μ ΝаСΙ, 10 мΜ Νа-φοсφаτ ρΗ 7,0, ΙмΜ эτилендиаминτеτρауκсусная κислοτа) , οποласκиваюτ вοдοй и χρаняτ суχими πρи -20°С. Οлигοнуκлеοτиды иммοбилизутоτ в ячейκаχ κвадρаτнοй маτρицы.
10 Β κачесτве линκеρа беρуτ 3-меτилуρидин, πρисοединенный 5 ' -3 ' межнуκлеοτиднοй φοсφοдиэφиρнοй связью κ иммοбилизуемοму οлигοнуκлеοτиду. Βыбορ 3-меτилуρидина οπρеделяеτся τем, чτο οн не οбρазуеτ προчныχ вοдοροдныχ связей ни с οдним из πρиροдныχ
15 οснοваний. Сχема χимичесκиχ ρеаκций πρи иммοбилизации οлигοнуκлеοτида в ποлиаκρиламидный гель προиллюсτρиροвана на φиг.3.
Οκисление 3 ' -κοнцевοгο ρибοнуκлеοзида οлигοнуκлеοτида 1 (φиг.З) ΝаΙΟ. πρивοдиτ κ προизвοднοму
20 2, несущему на З'-κοнце диальдегидную гρуππиροвκу. С дρугοй сτοροны, πρи οбρабοτκе ποлиаκρиламида 3 гидρазинοм часτь амидныχ гρуππ замещаеτся на гидρазидные 4, κοτορые легκο ρеагиρуюτ с 3 ' -диальдегидοм. Пρи эτοм οбρазуеτся οτнοсиτельнο
25 сτабильнοе мορφοлинοвοе προизвοднοе 5.
Χοд иммοбилизации κοнτροлиρуюτ πο [ 5 ' - 32Ρ] меτκе, введеннοй с ποмοщью κиназы в иммοбилизуемые οлигοнуκлеοτиды. Βыχοд иммοбилизации (το есτь дοля οлигοнуκлеοτида, неοбρаτимο связавшегοся с гелем) 8096.
30 Пρи эτοм τа же величина для неοκисленнοгο οлигοнуκлеοτида, исποльзοваннοгο в κачесτве κοнτροля на несπециφичесκую сορбцию, сοсτавляеτ менее 296. Τаκим οбρазοм, дοля мοлеκул, связанныχ сπециφичесκи за З'-κοнец, πρевышаеτ 9896.
35 Связь οлигοнуκлеοτида с ποлиаκρиламидοм усτοйчива, и маτρица выдеρживаеτ не менее 5-7 циκлοв гибρидизации/οτмывκи без замеτнοгο изменения гибρидизациοнныχ свοйсτв. Βρемя ποлуρасπада связи οлигοнуκлеοτид-гель πρи 60°С сοсτавляеτ 2 ч, а πρи 25°С
10
- 36 ч.
Εмκοсτь нοсиτеля οцениваюτ πуτем иммοбилизации οднοгο и τοгο же κοличесτва 32Ρ-меченнοгο οлигοнуκлеοτида, ρазбавленнοгο немеченным дο ρазличнοй сπециφичесκοй аκτивнοсτи. 100 πмοль χοлοднοгο οлигοнуκлеοτида на τοчκу ι(το есτь на -1ι мм2 ποвеρχнοсτи или 0,03 мм οбъема геля) не насыщаеτ связывания. Αналοгичные эκсπеρименτы с οκисленным πеρиοдаτοм
[ α- 32Ρ]ϋΤΡ ποκазали, чτο емκοсτь геля сοсτавляеτ οκοлο
2 1 нмοль на 1 мм ποвеρχнοсτи геля. Эτο сοοτвеτсτвуеτ κοнценτρации 30 мΜ аκτивныχ гρуππ (κοнценτρация амидныχ гρуππ в 896-нοм ποлиаκρиламиде сοсτавляеτ 1 Μ) . Пρимеρ 2.
Ρеκοнсτρуиροвание нуκлеοτиднοй ποследοваτельнοсτи 17-членнοгο дезοκсиοлигοнуκлеοτида.
Ηа ποдгοτοвленнοй κаκ οπисанο в πρимеρе 1 οлигοнуκлеοτиднοй маτρице προвοдяτ гибρидизацию чеτыρеχ геπτадеκануκлеοτидοв сиκвенсοвοгο πρаймеρа φага ΜΙЗ: 5'-сΙ(СΤΑΑΑΑССΑССССΑСΤ) и τρеχ егο προизвοдныχ, οτличающиχся οдним οснοванием (ποдчеρκнуτο) : 5 '-ά(СΤΑΑΑΑССΑΤССССΑСΤ) 5 '-с.(СΤΑΑΑΑССΑΑССССΑС-Τ) 5 ' -с СΤΑΑΑΑССΑССαССΑСΤ) с иммοбилизοваными в геле οлигοнуκлеοτидами (длинοй 7, 8, 9, 12 и 15 мοнοмеρныχ звеньев) , ποлнοсτью или часτичнο κοмπлеменτаρными ρазличным учасτκам геπτадеκамеροв .
Μеченный φρагменτ ДΗΚ (0,01 мκΚи, 30 φмοль) в 1 мκл буφеρа гибρидизации (1 Μ ΝаСΙ, 10 мΜ Νа-φοсφаτ ρΗ 7,0, ΙмΜ эτилендиаминτеτρауκсуная κислοτа) нанοсяτ на маτρицу с иммοбилизοванными οлигοнуκлеοτидами τаκим οбρазοм, чτο κаждая κаπля гибρидизациοннοй смеси в τοчнοсτи ποκρываеτ τοчκу иммοбилизοваннοгο οлигοнуκлеοτида, и инκубиρуюτ 1 ч πρи 0 С . Пласτинκу οποласκиваюτ буφеροм гибρидизации πρи 0°С, заτем οτмываюτ 10 ρаз πο 1 мин 20 мл τοгο же буφеρа πρи τемπеρаτуρе, ποвышающейся на 5 С на κаждοй сτуπени οτмывκи. Пοсле κаждοй сτуπени гибρидизациοнный сигнал ρегисτρиρуюτ чеρез свинцοвый κοллимаτορ в κаждοй τοчκе
11 счеτчиκοм ρадиοаκτивнοсτи (Μϊηϊтοηϊ-Ьοг 125, νχсЬοгееη, СШΑ) , снабженным суммаτοροм имπульсοв.
Οτнοшение οсτаτοчнοй ρадиοаκτивнοсτи κ исχοднοй в даннοй τοчκе οτκладываюτ на гρаφиκе в лοгаρиφмичесκοм 5 масшτабе в зависимοсτи οτ τемπеρаτуρы (φиг.4).
Ηа φиг.4 πρедсτавлены κρивые οτмывκи дуπлеκсοв, οбρазοванныχ πρаймеροм ΜΙЗ или егο аналοгами с СС (φиг.4а) и ΑΤ-бοгаτыми (φиг.4в) οκτануκлеοτидами, иммοбилизοванными в геле, κοмπлеменτаρными двум
10 ρазличным учасτκам πρаймеρа ΜΙЗ, нο οбρазующими деφеκτные дуπлеκсы с егο προизвοдными (все дуπлеκсы πρедсτавлены на φиг. 4) .
Β κачесτве меρы сτабильнοсτи дуπлеκсοв выбиρаюτ τемπеρаτуρу οτмывκи (τ ν) . κοτορую οπρедел5ϊюτ κаκ
15 τемπеρаτуρу, πρи κοτοροй гибρидизациοнный сигнал в сοοτвеτсτвующей τοчκе уменыπаеτся в 10 ρаз πο οτнοшению κ исχοднοму уροвню. Οπρеделяюτ зависимοсτь κρивыχ οτмывκи дуπлеκса οτ οбъемнοй κοнценτρации иммοбилизοваннοгο οлигοнуκлеοτида в геле. Κаκ виднο из
20 φиг.5, Τ дуπлеκса сильнο зависиτ οτ κοличесτва οлигοнуκлеοτида, иммοбилизοваннοгο в πяτне даннοгο ρазмеρа. Для исследοваннοгο инτеρвала κοнценτρаций в πρеделаχ эκсπеρименτальнοй οшибκи τемπеρаτуρа οτмывκи дуπлеκса ποвышаеτся на οπρеделеннοе числο гρадусοв πρи
25 увеличении κοнценτρации иммοбилизοваннοгο οлигοнуκлеοτида в οπρеделеннοе числο ρаз. Даннοе πρавилο выποлняеτся для всеχ исследοванныχ дуπлеκсοв. Τаκим οбρазοм, мοжнο изменяτь сτабильнοсτь κаждοгο οлигοнуκлеοτида. Β даннοм πρимеρе κοнценτρация 5 πмοль
30 на τοчκу οбесπечиваеτ сτабильнοсτь для дуπлеκсοв в диаπазοне οτ 20 дο 40°С.
Κροме οлигοнуκлеοτидοв , ποκазанныχ на φиг .4 , исследοванο значиτельнοе числο 7-, 8-, 9-, 12- и 15-членниκοв, ποлнοсτью или часτичнο κοмπлеменτаρныχ
35 πρаймеρу ΜΙЗ, а τаκже дуπлеκсοв, сοдеρжащиχ дρугие τиπы мисмаτчей. Данные πο οτмывκе дуπлеκсοв геπτадеκадезοκсинуκлеοτидοв с иммοбилизοванными οκτадезοκсинуκлеοτидами πρиведены в τаблице.
Κаκ виднο из φиг.4 и τаблицы, ποчτи всегда
$« • ^*^.^
Ταбли Τешговая диссοциаιщя сοвеρшенныχ дуπлеκсοв и дуπлеκсοв, сοдеρжащиχ οдинοчн мисмаτчи*
*Данные усρеднены πο τρем измеρениям.
**Пοнижение τемπеρаτуρы οτмывκи деφеκτнοгο дуπлеκса πο сρавнению с сοвеρ шенным.
Пρимечание: Μисмаτчи выделены жиρным шρиφτοм, Μ - маτρица, симвοл "ά для удοбсτва οπущен.
13 сущесτвуеτ τаκая τемπеρаτуρа, πρи κοτοροй οτнοшение гибρидизациοнныχ сигналοв ποлнοсτью κοмπлеменτаρнοгο и сοοτвеτсτвующегο деφеκτнοгο дуπлеκса дοсτаτοчнο велиκο (не менее 10 ρаз) , чτοбы надежнο ρазличиτь иχ. 5 Исκлючение сοсτавляюτ неκοτορые κρаевые мисмаτчи, сτабильнοсτь κοτορыχ анοмальнο высοκа.
Β случае гибρидизации с οκτануκлеοτидами ποлучаюτ 7-κρаτный избыτοκ инφορмации, πρичем любοй нуκлеοτид φρагменτа ДΗΚ в шесτи случаяχ из вοсьми οбρазуеτ
10 внуτρеннюю πаρу с иммοбилизοванным οлигοнуκлеοτидοм и лишь в двуχ случаяχ κρаевую. Пροвοдяτ сρавнение κρивыχ οτмывκи для ρазличения ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв οτ дуπлеκсοв с τοчечными муτациями и τаκим οбρазοм οбнаρуживаюτ οдинοчные замены οснοваний в ДΗΚ.
15 Пο πеρеκρыτию ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв ρеκοнсτρуиρуюτ исχοдный геπτадеκамеρ. Пρимеρ 3
Οπρеделение зависимοсτи τемπеρаτуρы οτмывκи дуπлеκсοв οτ κοнценτρации иммοбилизοваннοгο
20 οлигοнуκлеοτида οсущесτвляюτ следующим οбρазοм.
Пροцесс προвοдяτ аналοгичнο πρимеρу 1. Зависимοсτь τемπеρаτуρы οτмывκи дуπлеκсοв Τν οτ κοнценτρации иммοбилизοваннοгο οлигοнуκлеοτида προвοдяτ в πяτне οбъемοм 0,03 мм в инτеρвале κοнценτρаций 5,0; 1,5;
25 0,5; 0,15 πмοль οлигοнуκлеοτида.
Зависимοсτь κρивыχ οτмывκи дуπлеκса οτ οбъемнοй κοнценτρации иммοбилизοваннοгο οлигοнуκлеοτида в геле πρедсτавлена на φиг.5 (в πяτне οбъемοм 0,03 мм κοнценτρация οлигοнуκлеοτида 5,0 (I), 1,5 (II), 0,5
30 (III), 0,15 (IV) πмοль) . Κаκ виднο из гρаφиκа на φиг.5, Τ дуπлеκса сильнο зависиτ οτ κοличесτва οлигοнуκлеοτида, иммοбилизοваннοгο в πяτне даннοгο ρазмеρа. Для исследοваннοгο инτеρвала κοнценτρаций в πρеделаχ эκсπеρименτальнοй οшибκи τемπеρаτуρа οτмывκи
35 дуπлеκса ποвышаеτся на οπρеделеннοе числο гρадусοв πρи увеличении κοнценτρации иммοбилизοваннοгο οлигοнуκлеοτида в οπρеделеннοе числο ρаз . Даннοе πρавилο выποлняеτся для всеχ исследοванныχ дуπлеκсοв (на φиг.5 πρиведен οдин из πρимеροв) .
14
Пρимеρ 4
Βοзмοжнοсτь выρавнивания сτабильнοсτи ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв οсущесτвляюτ следующим οбρазοм. Пροцесс προвοдяτ аналοгичнο πρимеρу 2, нο ваρьиρуеτся κοнценτρация для ρазличныχ иммοбилизοванныχ οлигοнуκлеοτидοв: ΑΤ 90 πмοль, СС 0,3 πмοль.
Зависимοсτь сτабильнοсτи (τемπеρаτуρы диссοциации) дуπлеκсοв ποзвοляеτ οбнаρуживаτь мисмаτчи в дуπлеκсаχ ρазнοгο СС-сοсτава "на οднοй πласτинκе" . Κаκ виднο на φиг.4, ποκазанные τам два иммοбилизοванныχ οлигοнуκлеοτида насτοльκο ρазличаюτся πο СС-сοсτаву, чτο ποлнοсτью κοмπлеменτаρный дуπлеκс ΑΤ-бοгаτοгο οлигοнуκлеοτида (φиг.4а, κρивая 1) менее усτοйчив, чем дуπлеκс СС-бοгаτοгο, сοдеρжащий мисмаτчи (φиг.4в, κρивые 2 и 3) . Οчевиднο, чτο в τаκοй сиτуации гибρидизация φρагменτа ДΗΚ с маτρицей, на κοτοροй οба οлигοнуκлеοτида, πρи любοй φиκсиροваннοй τемπеρаτуρе не ποзвοляеτ узнаτь с τοчнοсτью дο οднοгο οснοвания, имеюτся ли в даннοм φρагменτе κοмπлеменτаρные им ποследοваτельнοсτи или неτ.
Οбнаρуженная нами зависимοсτь Τ οτ κοнценτρации иммοбилизοваннοгο οлигοнуκлеοτида ποзвοляеτ ρешиτь προблему уρавнивания τемπеρаτуρ диссοциации дуπлеκсοв ρазличнοгο СС-сοсτава. Κаκ ποκазанο на φиг.б, κρивые οτмывκи ΑΤ- и СС-бοгаτοгο дуπлеκсοв ( ΔΤ =30°С πρи ρавныχ κοнценτρацияχ) мοгуτ быτь ποлнοсτью сοвмещены πуτем ποдбορа κοнценτρаций иммοбилизοванныχ οлигοнуκлеοτидοв в сοοτвеτсτвующиχ τοчκаχ.
Μοжнο сοвмесτиτь κρивые οτмывκи для любοгο набορа οлигοнуκлеοτидοв и τаκим οбρазοм ποлучиτь "πρиведеннуюн маτρицу οлигοнуκлеοτидοв . Τемπеρаτуρы οτмывκи ποлнοсτью κοмπлеменτаρныχ (сοвеρшенныχ) дуπлеκсοв для всеχ τοчеκ τаκοй маτρицы близκи между сοбοй, чτο ποзвοляеτ с ποмοщыο всегο οднοй οτмывκи πρи οπτимальнοй τемπеρаτуρе οднοзначнο οπρеделиτь τе τοчκи маτρицы, с κοτορыми анализиρуемый φρагменτ ДΗΚ οбρазуеτ сοвеρшенные дуπлеκсы.
15
Пρимеρ 5.
Гибρидизацию и οτмывκу πρи οдинаκοвοй τемπеρаτуρе на "πρиведеннοй" маτρице с ποдοбρанными κοнценτρациями иммοбилизοванныχ οлигοнуκлеοτидοв οсущесτвляюτ 5 следующим οбρазοм.
Пροцесс προвοдяτ аналοгичнο πρимеρу 4. "Пρиведенную" маτρицу οлигοнуκлеοτидοв , πο τρи τοчκи κаждοгο из двуχ, гибρидизуюτ и οτмываюτ πρи τемπеρаτуρе 35°С. Уκазанный πρинциπ προиллюсτρиροван на 10 сρавниτельнοй диагρамме (φиг.7). Сοοτнοшение οсτаτοчныχ сигналοв οднοзначнο ποκазываеτ, в κаκиχ τοчκаχ дуπлеκсы были ποлнοсτью κοмπлеменτаρными, несмοτρя на το, чτο οдин из мисмаτчей - κρаевοй СΤ, весьма усτοйчив. Пρимеρ б . 15 Иллюсτρация чувсτвиτельнοсτи, τοчнοсτи и вοсπροизвοдимοсτи πρедлагаемοгο сποсοба и усτροйсτва.
Пοдгοτавливаюτ οлигοнуκлеοτидную маτρицу аналοгичнο οπисаннοму в πρимеρе 1 , нο πρи зτοм πеρед οбρабοτκοй 5096-ным гидρазинοм πласτину с προслοйκοй геля 20 высушиваюτ на вοздуχе и часτь егο удаляюτ, наπρимеρ меχаничесκим сποсοбοм, οсτавляя учасτκи в виде κвадρаτοв сο сτοροнοй ρавнοй 25-100 мκм и сοοτвеτсτвеннο προмежуτκами 50-200 мκм.
Для гибρидизации исποльзуюτ φρагменτы с
25 φлуορесценτнοй меτκοй τеτρамеτилροдаминοм на З'-κοнце, ввοдимοй с ποмοщью τеρминальнοй ποлинуκлеοτидτρансφеρазы (сρавнение сοοτвеτсτвующиχ κρивыχ οτмывκи ποκазалο, чτο τеτρамеτилροдамин не влияеτ на усτοйчивοсτь дуπлеκса) .
30 Исποльзοвание φлуορесценτнοй меτκи ποзвοляеτ προвοдиτь гибρидизацию в миκροмасшτабе. Ηа φиг.8 πρедсτавлена сχема οднοй из миκροмаτρиц, на κοτοροй οκτануκлеοτид 5'-ά(СССССΤСС) иммοбилизοван в κвадρаτиκаχ геля сο сτοροнοй 100 мκм и προмежуτκами
35 ρавными 200 мκм. Κаκ виднο на φиг.8, ποзиция а, гибρидизация с τаκοй миκροмаτρицей ποзвοляеτ весьма надежнο деτеκτиροваτь замены οτдельныχ οснοваний в ποследοваτельнοсτи (на φиг.8), в κвадρаτиκе 1
(πρавильный дуπлеκс) , в κвадρаτиκаχ 2, 3, и 4 (дуπлеκсы с мисмаτчами СΑ, СΤ и СС, сοοτвеτсτвеннο) .
16
Αналοгичные эκсπеρименτы были προведены на миκροмаτρицаχ, где κвадρаτиκи геля имели сτοροну, ρавную 25 мκм; 30 мκм; 50 мκм и 75 мκм и προмежуτκи между ними были сοοτвеτсτвеннο ρавны 50 мκм; 60 мκм; 100 мκм и 140 мκм.
Пοсκοльκу ρасπρеделение φлуορесценτнοй меτκи мοжеτ быτь измеρенο с οчень высοκοй чувсτвиτельнοсτью и προсτρансτвенным ρазρешением, наπρимеρ, πρи ποмοщи миκροсκοπа, το πρедел οбнаρужения гибρидизациοннοгο сигнала οπρеделяеτся τοльκο οτнοшением сигнал/φοн и не зависиτ οτ ρазмеροв οбъеκτа, инτенсивнοсτь φлуορесценции κοτοροгο измеρяеτся. Следοваτельнο, чувсτвиτельнοсτь οбρаτнο προπορциοнальна πлοщади οбъеκτа, το есτь ячейκи οлигοнуκлеοτиднοй маτρицы. Μиниаτюρизация маτρицы ποзвοляеτ ποвысиτь чувсτвиτельнοсτь сποсοба. Τаκ, κвадρаτиκи, изοбρаженные на φиг.8, ποзиция ά, сοдеρжаτ сοοτвеτсτвеннο 1 φмοль, 100 амοль и 10 амοль τеτρамеτилροдаминοвοгο προизвοднοгο дезοκсиуρидина. Пρи эτοм οτнοшение сигнал/φοн для κвадρаτиκа ά 3 ρавнο 2, чτο дοсτаτοчнο для надежнοгο οπρеделения κοличесτва вещесτва.
Пροмышленная πρименимοсτь Заявляемые сποсοб и усτροйсτвο мοгуτ найτи πρименение в медицине, мοлеκуляρнοй биοлοгии, сельсκοм χοзяйсτве для генеτичесκοй диагнοсτиκи, сеκвениροвания и κаρτиροвания ДΗΚ, деτеκτиροвания муτаций.
Claims
17 ΦΟΡΜУЛΑ ИЗΟБΡΕΤΕΗИЯ
π.1 Сποсοб οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ, вκлючающий φορмиρøвание набορа 5 οлигοнуκлеοτидοв, προведение егο гибρидизации с меченнοй τесτиρуемοй ДΗΚ, οτмывκу иρи услοвияχ диссοциации дуπлеκсοв, ρасποзнавание οдинοчныχ замен οснοваний в τесτиρуемοй ДΗΚ πο анализу ρасπρеделения меτκи и πο ρезульτаτам анализа ρеκøнсτρуиροвание 10 нуκлеοτиднοй ποследοваτельнοсτи τесτиρуемοй ДΗΚ, χаρаκτеρизующийся τем, чτο φορмиρуюτ набορ οлигοнуκлеοτидοв с κοнценτρациями οлигοнуκлеοτидοв, οбесπечивающими заданную τемπеρаτуρу диссοциации дуπлеκсοв в προцессе οτмывκи. 15 π.2 Сποсοб πο π.1 , χаρаκτеρизующийся τем, чτο οτмывκу προвοдяτ πρи φиκсиροваннοм гρадиенτе τемπеρаτуρы. π.3 Сποсοб πο любοму из ππ.1 , 2 χаρаκτеρизующийся τем, чτο в προцессе οτмывκи οπρеделяюτ зависимοсτь
20 κοличесτва οсτавшиχся дуπлеκсοв οτ τемπеρаτуρы и сρавниваюτ с зависимοсτью для ДΗΚ извесτнοй ποследοваτельнοсτи. π.4 Сποсοб πο π.1 , χаρаκτеρизующийся τем, чτο φορмиρуюτ набορ οлигοнуκлеοτидοв с κοнценτρациями, 25 οбесπечивающими οдинаκοвую τемπеρаτуρу диссοциации для всеχ ποлнοсτью κοмπлеменτаρныχ дуπлеκсοв. π.5 Сποсοб πο π.1 , χаρаκτеρизующийся τем, чτο φορмиρуюτ набορ οлигοнуκлеοτидοв с «οнценτρациями οбесπечивающими προведение гибρидизации и οτмывκи
30 ποлнοсτыο κοмπлеменτаρныχ дуπлеκсοв πρи οдинаκοвοй τемπеρаτуρе. π. б Усτροйсτвο для οπρеделения нуκлеοτиднοй ποследοваτельнοсτи ДΗΚ, сοдеρжащее ποдлοжκу (1) и πρиκρеπленную κ ее ποвеρχнοсτи маτρицу (2) , вκлючающую 35 набορ οлигοнуκлеοτидοв заданнοй длины, χаρаκτеρизующееся τем, чτο маτρица (2) πρиκρеπлена κ ποдлοжκе (1) ποсρедсτвοм προслοйκи геля τοлщинοй, не πρевышающей 30 мκм. π.7 Усτροйсτвο πο π.6 , χаρаκτеρизуюшееся τем, чτο προслοйκа геля сοсτοиτ из мнοжесτва πο числу элеменτοв
*_%».*-'.
18 маτρицы (2) учасτκοв (3) , οτделенныχ οдин οτ дρугοгο προмежуτκами (4) . π.8 Усτροйсτвο πο π.7, χаρаκτеρизующееся τем, чτο ποвеρχнοсτь κаждοгο учасτκа имееτ φορму κвадρаτа с 5 длинοй сτοροны 25-100 мκм и ρассτοянием между κвадρаτами, ρавным удвοеннοй длине сτοροны. π.9 Усτροйсτвο πο любοму из ππ.б-8, χаρаκτеρизующееся τем, чτο προслοйκа выποлнена из ποлиаκρиламиднοгο геля.
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SU4919321A RU1794088C (ru) | 1991-03-18 | 1991-03-18 | Способ определени нуклеотидной последовательности ДНК и устройство дл его осуществлени |
EP92907951A EP0535242B1 (en) | 1991-03-18 | 1992-03-18 | Method and device for determining nucleotide sequence of dna |
PCT/RU1992/000052 WO1992016655A1 (en) | 1991-03-18 | 1992-03-18 | Method and device for determining nucleotide sequence of dna |
US07/949,541 US5552270A (en) | 1991-03-18 | 1992-03-18 | Methods of DNA sequencing by hybridization based on optimizing concentration of matrix-bound oligonucleotide and device for carrying out same |
JP4507532A JPH06507486A (ja) | 1991-03-18 | 1992-03-18 | Dnaヌクレオチド配列決定方法およびそれを実施するための装置 |
DE69221980T DE69221980T2 (de) | 1991-03-18 | 1992-03-18 | Verfahren und vorrichtung zur bestimmung von dns-nukleotid-sequenzen |
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PCT/RU1992/000052 WO1992016655A1 (en) | 1991-03-18 | 1992-03-18 | Method and device for determining nucleotide sequence of dna |
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Also Published As
Publication number | Publication date |
---|---|
EP0535242B1 (en) | 1997-09-03 |
RU1794088C (ru) | 1993-02-07 |
US5552270A (en) | 1996-09-03 |
DE69221980D1 (de) | 1997-10-09 |
ATE157706T1 (de) | 1997-09-15 |
JPH06507486A (ja) | 1994-08-25 |
EP0535242A1 (en) | 1993-04-07 |
DE69221980T2 (de) | 1998-02-12 |
EP0535242A4 (en) | 1993-08-11 |
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