WO2005113767A1 - ダイオキシン類等応答性プラスミド、ダイオキシン類等測定用遺伝子導入細胞、並びにそれを用いたダイオキシン類等検出方法及びバイオセンサー - Google Patents
ダイオキシン類等応答性プラスミド、ダイオキシン類等測定用遺伝子導入細胞、並びにそれを用いたダイオキシン類等検出方法及びバイオセンサー Download PDFInfo
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- WO2005113767A1 WO2005113767A1 PCT/JP2005/008875 JP2005008875W WO2005113767A1 WO 2005113767 A1 WO2005113767 A1 WO 2005113767A1 JP 2005008875 W JP2005008875 W JP 2005008875W WO 2005113767 A1 WO2005113767 A1 WO 2005113767A1
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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
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
- C12N15/1034—Isolating an individual clone by screening libraries
- C12N15/1086—Preparation or screening of expression libraries, e.g. reporter assays
Definitions
- the present invention relates to a method for controlling endocrine disrupting substances such as dioxins and polycyclic aromatic hydrocarbons and some carcinogens via an aromatic hydrocarbon receptor (hereinafter, AhR) which is an intracellular receptor.
- AhR aromatic hydrocarbon receptor
- the present invention relates to a simple, quick and highly sensitive detection method or quantification method for harmful chemical substances based on action, a detection substance, and a biosensor for detecting dioxins.
- Dioxins cause various harmful effects in a very small amount. Therefore, establishment of a method to detect dioxins in a sensitive and rapid manner is considered an urgent issue in order to accurately evaluate exposure to dioxins and prevent health problems. Another major challenge is the overall and quantitative evaluation of the biological toxicity of polycyclic aromatic hydrocarbons, which are as harmful substances in the environment as dioxins, and tobacco smoke containing these in complex.
- Representative methods for detecting dioxins and the like in the environment include the use of endogenous biomarkers, for example, cytochrome P-4501A1, which is a drug metabolizing enzyme, bioassay using cultured cells, and enzyme immunoassay. And methods using chromatography.
- bioassays using genetic engineering technology have attracted attention in recent years because of their simplicity and high sensitivity.
- Such a genetically engineered bioassay is composed of several basic units.
- the two powerful basic units are (1) cells and (2) the genetic structure to be incorporated into cells.
- the powerful gene structure further includes a dioxin-responsive DNA sequence, which is a DNA sequence that functions as a dioxin sensor, and a marker protein that defines the marker protein. It is made up of the gene.
- dioxins and the like When such transfected cells are exposed to a sample containing dioxins and the like, dioxins and the like first bind to intracellular AhR, and furthermore, coactivator (hereinafter, Arnt), which is a transcription promotion coupling factor. Forms a complex with the DNA, and the complex activates the dioxin-responsive DNA sequence as a transcription factor. As a result, the expression of the marker protein gene downstream of the gene sequence is promoted.
- Arnt coactivator
- marker protein genes enzyme genes such as chloramphene-col 'acylribosyl'transferase, j8-galactosidase, luciferase, and the like, and a green fluorescent protein gene have been used.
- Non-patent literature 1 P.A.Bennisch, K. Hosoe, S. 3 ⁇ 4akai, Bioanalytical screening methods for dioxins and dioxin— like compounds: a review of bioassay / biomarker technology, Environ. Int. 27 (2001) 413—439.
- Non-Patent Document 2 Japanese Patent Application No. 2004-135662, "Transformant for measuring dioxins and method for detecting, quantitatively analyzing and screening dioxins using the same" DISCLOSURE OF THE INVENTION Problems the invention is trying to solve
- the present invention provides (1) simplified bioassay process, (2) improved detection sensitivity, and (3) improved bioassay for dioxins detection using conventional luciferase or green fluorescent protein.
- the objectives are to significantly reduce bioassay time, and (4) to reduce costs such as culturing costs and personnel costs.
- the present invention provides a method for preparing a dioxin and Z or a polycyclic aromatic hydrocarbon, which is activated in response to a dioxin or a Z or polycyclic aromatic hydrocarbon.
- the secretory marker protein gene is preferably a secretory alkaline phosphatase gene.
- the dioxins and Z or the polycyclic aromatic hydrocarbon-responsive plasmid described above are introduced into cultured cells that highly express an aromatic hydrocarbon receptor, and the aromatic hydrocarbon receptor is It is a gene-introduced cell for measuring dioxins and z or polycyclic aromatic hydrocarbons, which binds to dioxins and Z or polycyclic aromatic hydrocarbons to produce secretory proteins.
- culturing the cells with high expression of the aromatic hydrocarbon receptor it is preferably a Hep a -lcl C 7.
- the present invention provides a neurosensor using the above-described transgenic cell for measuring dioxins and Z or polycyclic aromatic hydrocarbons as a sensor for detecting dioxins and Z or polycyclic aromatic hydrocarbons. is there.
- the present invention provides a dioxin and a dioxin and a Z or polycyclic aromatic hydrocarbon-sensitive gene sequence activated in response to Z or a polycyclic aromatic hydrocarbon, and a downstream of the gene sequence.
- Dioxins and Z or Z or polycyclic aromatic hydrocarbons prepared by introducing a dioxin or Z or polycyclic aromatic hydrocarbon responsive plasmid incorporating a secretory marker protein gene into cells that highly express aromatic hydrocarbon receptors.
- the secretory marker protein is a secretory alkaline phosphatase.
- the cell is Hepa-lclc7.
- the present invention provides a dioxin and a dioxin and a Z or polycyclic aromatic hydrocarbon-sensitive gene sequence activated in response to Z or a polycyclic aromatic hydrocarbon, and a downstream of the gene sequence.
- the biotoxicity of tobacco smoke is evaluated by exposing the transgenic cells for measuring hydrocarbons to tobacco smoke and quantifying the activity of a secretory marker protein secreted by the transgenic cells. Is a quantitative evaluation method.
- the secretory marker protein is a secretory alkaline phosphatase.
- dioxins and polycyclic aromatic hydrocarbons can be easily measured by simple chemiluminescence measurement or the like.
- the dioxin measurement process up to the measurement of cell seeding power can be completed in several hours, and according to the present invention, low-cost and highly sensitive measurement of dioxins and Z or polycyclic aromatic hydrocarbons can be performed. Can be.
- the present invention is an excellent invention capable of detecting dioxins and / or polycyclic aromatic hydrocarbons contained in the atmosphere, rivers, soils, foods, and living equipment.
- FIG. 1 shows plasmids reactive with dioxins and Z or polycyclic aromatic hydrocarbons.
- FIG. 2 shows a structural diagram of pDRE-SEAPIO.
- pDRE-SEAPlO contains a dioxin-responsive DNA sequence (DRE) in a part of the mouse breast cancer virus promoter (MM TV).
- DRE dioxin-responsive DNA sequence
- MMTV-DRE11 Dioxin-sensitive DNA sequence
- SEAP secreted alkaline phosphatase gene 12 located downstream of it, and a polyadenylation signal derived from salvirus 40 (SV40) (Hereinafter referred to as poly A13).
- DRE dioxin-responsive DNA sequence
- SEAP secreted alkaline phosphatase
- MMTV-DRE in which DRE was incorporated into a part of MMTV was used as a sensor DNA sequence for sensing dioxins. . This established a highly sensitive Atsushi system.
- MMTV-DRE11 is known to be activated in response to dioxins, and is obtained by incorporating four DREs into a part of the MMTV promoter. It has a stronger response to dioxins than DRE alone.
- FIG. 2 shows the results of a comparative study of the sensor capabilities of MMTV-DRE and DRE.
- SEAP reporter plasmids having only MMTV-DRE and DRE as sensor sequences were prepared, and these were each transfected into H-marked a- lclc7 cells. The details of gene transfer will be described later. These cells were then stimulated with TCDD and compared for increased SEAP activity. In cells transfected with a SEAP reporter plasmid containing only DRE as a sensor sequence, stimulation of TCDD increased SEAP activity 4.5-fold.
- Hepalclc7-DRE-SEAP cells hereinafter referred to as HeDS cells
- the SEAP activity increased 43.2-fold by TCDD stimulation.
- TCDD did not increase SEAP activity. This means that the sequence power of MMTV strongly amplifies the response of DRE to dioxin.
- the high reactivity of MMTV-DRE allows for quick and low cost of Atssey.
- Example 1 SEAP was used as a marker protein.
- SEAP secreted extracellularly, unlike marker luciferase, which is a marker protein that can detect dioxins with high sensitivity, along with luciferase. Therefore, there is no need for an operation to extract cells by destroying cells.
- FIG. 3 is a graph showing the measurement sensitivity of TCDD in 5000 HeDS cells.
- Conventional dioxin atlas using luciferase requires 60,000 to 100,000 cells to detect ⁇ TCDD, whereas 5,000 HeDS cells as shown in Figure 3 Can detect 0.5pM TCDD.
- SEAP as a marker protein
- dioxins can be assayed using only a very small sample of the culture supernatant as small as 5 ⁇ l.
- the transcription level of SEAP gene 12 and the secretion level of SEAP protein correlate very well, and the activity can be easily detected and quantified by a chemiluminescence detection system such as a luminometer.
- PolyA13 is an essential gene sequence in the process of producing messenger RNA and translating it into protein.
- pDRE-SEAPIO is prepared by a conventional genetic engineering method. That is, a fragment of MMTV-DRE11 cut out and purified with a restriction enzyme is incorporated into a SEAP plasmid upstream of the SEAP gene 12 using a T4 DNA ligase without a promoter.
- T4 DNA ligase is an enzyme that links the 5 'end and 3' end of adjacent DNA strands.
- the produced pDRE-SEAPIO is introduced into Escherichia coli to increase in large quantities, and pDRE-SEAPIO is purified by a conventional genetic engineering method.
- the prepared pDRE-SEAP was transformed into a mouse liver cancer cell line by the procedure shown in FIG.
- Hepa-lclc7 cells Gene transfer into H-marked a- lclc7 cells to establish stable recombinant cells.
- the inventors selected Hepa-lclc7 cells because (1) in order to establish a bioassay system for dioxins, it was not possible to use cells that produce aromatic hydrocarbon receptors (hereinafter AhR). And (2) selecting a cell that expresses AhR at a high level is an essential component in order to establish a highly sensitive Atsushi system.
- AhR aromatic hydrocarbon receptors
- Hepa-lclc7 is selected.
- the procedure for introducing the prepared pDRE-SEAP into Hepa-lclc7 cells and establishing stable recombinant cells is as shown in FIG.
- Hepa-lclc7 cells detached from the culture dish with trypsin are thoroughly washed with phosphate buffered saline (PBS), the cuvette for electroporation (hereinafter, “elect mouth poration”) is used.
- PBS phosphate buffered saline
- lect mouth poration Made in Bio-Radonnay earth, part number 165-2088) (Sl).
- 20 ⁇ g pDRE-SEAP and 2 ⁇ g Add and mix the plasmid pcDNA3.1 containing the neomycin resistance gene, mix, and leave on ice for 10 minutes (S2).
- the culture solution used was ⁇ -MEM (manufactured by Gibconed Earth, part number 12561-056). After that, non-recombinant cells are killed by culturing for 1-2 weeks in the presence of 500 ⁇ g / ml neomycin (S4), and only recombinant cells in which pDRE-SEAP is stably integrated into chromosomal DNA survive. ⁇ Proliferate to form clumps.
- the cell clumps are individually separated by trypsin treatment, transferred to a 96-well culture plate with two wells, and the culture is continued for one week (S5). After the cells become saturated, the culture medium in each well is replaced with a-MEM100 / zl containing 1% FBS, and cultured for 24 hours in the presence or absence of DD ⁇ TCDD, and the culture supernatant A predetermined SEAP assay is performed using 51, and HeDS cells that respond most sensitively to low concentration of dioxin are established and used for a dioxin detection bioassay (S6).
- this bioassay method is referred to as DRE-based Sensing of dioxin via Secreted Alkalined phosphatase (hereinafter, referred to as DRESSA method).
- FIG. 5 shows the response mechanism of the established HeDS cells to dioxins.
- each component of pDRE-SEAPIO each component of pDRE-SEAPIO
- MMTV-DRE11 and its downstream SEAP gene 12 and polyadenylation signal 13 are stably integrated.
- dioxins 20 When the cells are exposed to dioxins 20, dioxins 20 first cross the cell membrane and bind to AhR14, which is present in the cytoplasm.
- AhR14 forms a complex with Arntl5, a coactivator, and enters the nucleus
- transcription of the downstream SEAP gene 12 is promoted, messenger RNA 16 is produced, translated into protein 18 by ribosome 17, and rapidly secreted outside the cell as SEAP protein 19. Therefore, by measuring the activity of the SEAP protein in the culture supernatant, it is possible to quantify the level of dioxins exposed to the cells.
- FIG. 6 is a flowchart showing the procedure for detecting dioxins in a sample.
- First 96 holes Seed HeDS cells into each well of the culture plate at a density of 2 x 10 4 Zwell. Dispense 100-ml ⁇ -MEM containing 1% FBS into each well (Sl). After culturing for 24 hours to allow the cells to settle to the bottom of each well, the culture medium is replaced, and the liquid sample containing TCDD is added with 1 ⁇ l of calorie (S2). After culturing for 24 hours, the supernatant is sampled in steps of 51 (S3), and the SEAP protein activity is measured by the procedure described below (S4).
- the SEAP protein activity in the culture supernatant is quantified as follows. Add 5 1 buffer to 5 ⁇ l of culture supernatant and incubate for 30 minutes at 65 ° C to inactivate endogenous alkaline phosphatase activity. In addition, a buffer containing L-homoarginine, an inhibitor of endogenous alkaline phosphatase, was allowed to stand at 20 ⁇ l for 5 min, and then calored with 15 ⁇ l of substrate CSPD and allowed to stand in the dark for 30 min. After placing, the luminosity of the light is measured with a luminometer.
- FIG. 7 shows the results of stimulating HeDS cells with 6DD of TCDD, followed by a time course of SEAP protein activity in the culture solution up to 10 hours.
- DMSO dimethyl sulfoxide
- the predominant increase in SEAP protein activity was observed 4 hours after TCDD addition, and gradually increased over time.
- FIG. 8 shows the subsequent transition of SEAP protein activity for up to 72 hours.
- SEAP protein activity lasted up to 48 hours after stimulation, after which equilibrium was reached.
- FIG. 9 shows the results of examining the sensitivity of HeDS cells. HeDS cells were exposed to TCDD at a low concentration of 0-1 ⁇ , and the increase in SEAP protein activity in the culture was examined. A predominant increase in SEAP protein activity was already observed at 0.25 pM (2501 M).
- the DRESSA method can detect TCDD at a concentration of ⁇ or less, which is the conventional detection limit of bioassay.
- the inventors have confirmed that the SEAP protein activity in the culture solution increases in a concentration-dependent manner up to 100 pM.
- Fig. 10 shows the result of examination on the number of cells required for the DRESSA method. That is, the number of cells shown in the graph was seeded on a 96-well culture plate, and the cells were exposed to InM TCDD. Then, SEAP protein activity in the culture solution was measured. As shown in FIG. 10, it became clear that if there were 50 cells per sample (one well), the TCDD of InM could be sufficiently detected. This corresponds to the 60,000 to 100,000 Z holes required for conventional In comparison, this is equivalent to one thousandth to one thousandth.
- the above-described detection procedure can be simplified as shown in FIG. That is, first, 50 ⁇ l of the culture solution containing sample 11 is dispensed into each well of a 96-well culture plate, and HeDS cells suspended in the 501 culture solution are immediately added (total 100 1) (SI) .
- the culture supernatant is sampled (S2), and the SEAP protein activity is measured (S3).
- S2 the culture supernatant
- S3 the SEAP protein activity
- FIG. 12 shows the time course of SEAP protein activity in a culture solution after stimulating HeDS cells with TCDD (6 pM and InM) by the rapid DRESSA method.
- TCDD 6 pM and InM
- FIG. 13 shows a comparison of the sensitivity between the DRESSA method and the rapid DRESSA method.
- the same number of cells were exposed to 6 pM TCDD under colonization conditions in the DRESSA method or under floating conditions in the rapid DRESSA method, and the subsequent increase in SEAP protein activity in the culture was compared over time.
- FIG. 13 up to 24 hours after the stimulation, there was no difference in the detection sensitivity of dioxins between the two.
- FIG. 14 shows that HeDS cells were converted to polycyclic aromatic hydrocarbons of 1 ⁇ of 3-methylcholanthrene (3-MC), benzo [a] pyrene (B [a] P), and ⁇ -naphthoflavone (j8NF).
- 5 shows SEAP protein activity in the culture supernatant after each stimulation. In each case, marked induction of SEAP protein activity was observed as compared to the control stimulus, DMSO.
- HeDS cells also secrete SEAP proteins in response to 3-MC, B [a] P, j8 NF), which are harmful chemicals other than dioxins acting via AhR.
- Tobacco smoke contains complex harmful chemical substances such as dioxins and polycyclic aromatic hydrocarbons. AhR bound to harmful chemicals in tobacco smoke is bound to DRE. In combination, it exerts its biological toxicity. Thus, the AhR activity of cigarette smoke can be expressed as a value converted to the amount of TCDD that causes equivalent AhR activation. The converted value was defined as a DRE-activating potential value (DAP value), and the AhR activating ability of tobacco smoke was quantitatively evaluated as an indicator of the biological toxicity of tobacco smoke. This evaluation method is extremely useful for quantitatively determining the degree of health effects of smoking.
- DAP value DRE-activating potential value
- a reference chemical substance add 1 to ⁇ TCDD in the same manner. After culturing for 16 hours, collect 5 ⁇ l of the culture supernatant and measure SEAP activity.
- a calibration curve showing the correlation between TCDD concentration and SEAP activity was created, and the harmful substance concentration in each cigarette smoke extract was calculated based on the calibration curve and converted to TCDD.
- Table 1 shows the total amount of AhR activity in the generated smoke, which is calculated and shown as the DAP value. As shown in Table 1, very high levels of AhR activity were observed in cigarette smoke. There is almost a positive correlation between tar content and DAP value.When comparing lmg and 20mg tar contents, the former DAP value is not 1/20 that of the latter, Only about 1/3. The DAP value is higher for 14 mg brands than for 20 mg tar grades. These facts imply that the tar content, which is generally used as an indicator of health impact, is not sufficient as an indicator of biological toxicity, making it more practical and new. The significance of the DAP value as an indicator is high.
- the present invention which can detect dioxin and similar harmful chemical substances simply, quickly, inexpensively, and with ultra-high sensitivity, is useful for monitoring industrial wastewater, controlling drinking water quality, controlling food quality, and controlling endocrine disrupting substances in industrial products. It has high industrial utility, such as monitoring for contamination.
- FIG. 1 Structure of dioxin-like responsive plasmid (pDRE-SEAP)
- FIG. 9 A graph showing the increase in SEAP protein activity in the culture medium when HeDS cells were exposed to TCDD at a low concentration of 0 to 1 ⁇ .
- FIG. 14 A graph showing the increase in SEAP protein activity in the culture supernatant after stimulating HeDS cells with a dioxin-like chemical.
- MMTV-DRE Secreted marker protein gene
- SEAP Polyadenylation signal
- polyA Aromatic hydrocarbon receptor
- AhR Co-activator
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JP2006513687A JP4815602B2 (ja) | 2004-05-24 | 2005-05-16 | ダイオキシン類等応答性プラスミド、ダイオキシン類等測定用遺伝子導入細胞、並びにそれを用いたダイオキシン類等検出方法及びバイオセンサー |
EP05739131A EP1767622B1 (en) | 2004-05-24 | 2005-05-16 | Transgenic cell for assay of dioxin and utilizing the same, dioxin detecting method and biosensor |
DE602005026660T DE602005026660D1 (de) | 2004-05-24 | 2005-05-16 | Transgene zelle für einen test für dioxin sowie nutzung davon, nachweisverfahren für dioxin und biosensor |
US11/597,407 US7732185B2 (en) | 2004-05-24 | 2005-05-16 | Plasmid having response to dioxins, transgenic cell for measuring dioxins, dioxins sensing method and biosensor using the same |
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JP2004-153293 | 2004-05-24 | ||
JP2004153293 | 2004-05-24 |
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EP (1) | EP1767622B1 (ja) |
JP (1) | JP4815602B2 (ja) |
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Cited By (2)
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JPWO2007004361A1 (ja) * | 2005-07-01 | 2009-01-22 | 国立大学法人山梨大学 | 遺伝子導入非ヒト哺乳動物、およびこれを用いた環境中有害化学物質のモニタリング方法 |
WO2012033151A1 (ja) | 2010-09-09 | 2012-03-15 | 株式会社明治 | 炎症を抑制する組成物 |
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KR101272315B1 (ko) * | 2010-09-10 | 2013-06-07 | 경희대학교 산학협력단 | 새로운 혈청 내 다이옥신류의 생물학적 검출 방법, 및 이의 대사증후군 및 관련 증상에 대한 진단적 유용성 |
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KR20010046920A (ko) * | 1999-11-16 | 2001-06-15 | 정명식 | 다이옥신류에 의하여 발현이 조절되는 재조합 리포터유전자를 가지는 형질전환 세포주를 이용한 다이옥신류의생물학적 분석방법 |
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JP2004135662A (ja) | 2002-09-27 | 2004-05-13 | Frontier Science Co Ltd | ダイオキシン類測定用形質転換体並びにそれを用いたダイオキシン類の検出方法、定量分析方法及びスクリーニング方法 |
JP2005237326A (ja) | 2004-02-27 | 2005-09-08 | Univ Nihon | ダイオキシン類の検出法 |
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- 2005-05-16 US US11/597,407 patent/US7732185B2/en not_active Expired - Fee Related
- 2005-05-16 JP JP2006513687A patent/JP4815602B2/ja active Active
- 2005-05-16 EP EP05739131A patent/EP1767622B1/en not_active Expired - Fee Related
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KR20010046920A (ko) * | 1999-11-16 | 2001-06-15 | 정명식 | 다이옥신류에 의하여 발현이 조절되는 재조합 리포터유전자를 가지는 형질전환 세포주를 이용한 다이옥신류의생물학적 분석방법 |
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KASAI ET AL: "DRESSA: biosensing of dioxin and dioxin-like chemicals using secreted alkaline phosphatase.", ANAL BIOCHEM., vol. 335, no. 1, 1 December 2004 (2004-12-01), pages 73 - 80, XP004616777 * |
KASAI ET AL: "Fast-track DRESSA: a bioassay for fast, sensitive, and selective detection of halogenated and polycyclic aromatic hydrocarbons.", ANAL BIOCHEM., vol. 337, no. 1, 1 February 2005 (2005-02-01), pages 84 - 88, XP004707211 * |
See also references of EP1767622A4 * |
SHINBA S. ET AL: "Ah receptor Kajo Hatsugen Saibo oyobi Bunpitsugata reporter Idenshi o MOchiita Dioxin-rui no Kan'i Kenshutsuho no Kaihatsu.", THE PHARMACEUTICAL SOCIETY OF JAPAN., 15 October 2001 (2001-10-15), pages 68, XP002994453 * |
YOKOYAMA N ET AL: "Dioxin-rui no Kan'i Kenshutsoho no Kaihatsu.", vol. 2003, 10 October 2003 (2003-10-10), pages 96, XP002994451 * |
YOKOYAMA N ET AL: "Dioxin-rui no Kan'i Kenshutsuho no Kaihatsu.", vol. 6, 2 December 2003 (2003-12-02), pages 204, XP002994452 * |
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JPWO2007004361A1 (ja) * | 2005-07-01 | 2009-01-22 | 国立大学法人山梨大学 | 遺伝子導入非ヒト哺乳動物、およびこれを用いた環境中有害化学物質のモニタリング方法 |
WO2012033151A1 (ja) | 2010-09-09 | 2012-03-15 | 株式会社明治 | 炎症を抑制する組成物 |
EP2615163A1 (en) * | 2010-09-09 | 2013-07-17 | Meiji Co., Ltd. | Composition for preventing inflammations |
EP2615163A4 (en) * | 2010-09-09 | 2014-01-22 | Meiji Co Ltd | COMPOSITION FOR PREVENTING IGNITION |
US9095604B2 (en) | 2010-09-09 | 2015-08-04 | Meiji Co, Ltd. | Composition for preventing inflammations |
JP5919193B2 (ja) * | 2010-09-09 | 2016-05-18 | 株式会社明治 | 炎症を抑制する組成物 |
Also Published As
Publication number | Publication date |
---|---|
EP1767622B1 (en) | 2011-03-02 |
EP1767622A1 (en) | 2007-03-28 |
EP1767622A4 (en) | 2008-05-28 |
US20080050766A1 (en) | 2008-02-28 |
JP4815602B2 (ja) | 2011-11-16 |
JPWO2005113767A1 (ja) | 2008-07-31 |
US7732185B2 (en) | 2010-06-08 |
DE602005026660D1 (de) | 2011-04-14 |
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