WO2002012867A1 - Sonde fluorescente pour analyse d'ions magnesium - Google Patents
Sonde fluorescente pour analyse d'ions magnesium Download PDFInfo
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- WO2002012867A1 WO2002012867A1 PCT/JP2001/006401 JP0106401W WO0212867A1 WO 2002012867 A1 WO2002012867 A1 WO 2002012867A1 JP 0106401 W JP0106401 W JP 0106401W WO 0212867 A1 WO0212867 A1 WO 0212867A1
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- 239000007850 fluorescent dye Substances 0.000 title claims abstract description 87
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910001425 magnesium ion Inorganic materials 0.000 title claims abstract description 70
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 62
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 239000001257 hydrogen Substances 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims description 92
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 49
- 125000000217 alkyl group Chemical group 0.000 claims description 43
- 239000000523 sample Substances 0.000 claims description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 229910052736 halogen Inorganic materials 0.000 claims description 16
- 150000002367 halogens Chemical class 0.000 claims description 16
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 16
- -1 R 21 Chemical compound 0.000 claims description 15
- 125000004429 atom Chemical group 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 11
- 125000003545 alkoxy group Chemical group 0.000 claims description 10
- 150000001721 carbon Chemical group 0.000 claims description 9
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 9
- 125000003277 amino group Chemical group 0.000 claims description 8
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 7
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- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 9
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- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 9
- 230000003834 intracellular effect Effects 0.000 description 9
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- 238000005259 measurement Methods 0.000 description 8
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- NHYXMAKLBXBVEO-UHFFFAOYSA-N bromomethyl acetate Chemical compound CC(=O)OCBr NHYXMAKLBXBVEO-UHFFFAOYSA-N 0.000 description 7
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- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
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- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 5
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- 235000002597 Solanum melongena Nutrition 0.000 description 4
- 244000061458 Solanum melongena Species 0.000 description 4
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- 230000008859 change Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 125000005594 diketone group Chemical group 0.000 description 4
- BEPAFCGSDWSTEL-UHFFFAOYSA-N dimethyl malonate Chemical compound COC(=O)CC(=O)OC BEPAFCGSDWSTEL-UHFFFAOYSA-N 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
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- PHFHFZDHYYOHJM-UHFFFAOYSA-N acetyloxymethyl 4-oxo-3-oxa-13-azatetracyclo[7.7.1.02,7.013,17]heptadeca-1,5,7,9(17)-tetraene-5-carboxylate Chemical compound C1CCC2=C(OC(C(C(=O)OCOC(=O)C)=C3)=O)C3=CC3=C2N1CCC3 PHFHFZDHYYOHJM-UHFFFAOYSA-N 0.000 description 1
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- KCDCNGXPPGQERR-UHFFFAOYSA-N coumarin 343 Chemical compound C1CCC2=C(OC(C(C(=O)O)=C3)=O)C3=CC3=C2N1CCC3 KCDCNGXPPGQERR-UHFFFAOYSA-N 0.000 description 1
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- DEFVIWRASFVYLL-UHFFFAOYSA-N ethylene glycol bis(2-aminoethyl)tetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)CCOCCOCCN(CC(O)=O)CC(O)=O DEFVIWRASFVYLL-UHFFFAOYSA-N 0.000 description 1
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- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
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- NGCVJRFIBJVSFI-UHFFFAOYSA-I magnesium green Chemical compound [K+].[K+].[K+].[K+].[K+].C1=C(N(CC([O-])=O)CC([O-])=O)C(OCC(=O)[O-])=CC(NC(=O)C=2C=C3C(C4(C5=CC(Cl)=C([O-])C=C5OC5=CC([O-])=C(Cl)C=C54)OC3=O)=CC=2)=C1 NGCVJRFIBJVSFI-UHFFFAOYSA-I 0.000 description 1
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- RJMUSRYZPJIFPJ-UHFFFAOYSA-N niclosamide Chemical compound OC1=CC=C(Cl)C=C1C(=O)NC1=CC=C([N+]([O-])=O)C=C1Cl RJMUSRYZPJIFPJ-UHFFFAOYSA-N 0.000 description 1
- ZHZCYWWNFQUZOR-UHFFFAOYSA-N pent-4-en-2-ol Chemical compound CC(O)CC=C ZHZCYWWNFQUZOR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6439—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" with indicators, stains, dyes, tags, labels, marks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/7769—Measurement method of reaction-produced change in sensor
- G01N2021/7786—Fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6408—Fluorescence; Phosphorescence with measurement of decay time, time resolved fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/6456—Spatial resolved fluorescence measurements; Imaging
- G01N21/6458—Fluorescence microscopy
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/968—High energy substrates, e.g. fluorescent, chemiluminescent, radioactive
-
- 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
- Y10T436/20—Oxygen containing
- Y10T436/200833—Carbonyl, ether, aldehyde or ketone containing
Definitions
- the present invention relates to a fluorescent probe for measuring magnesium ions present in a solution.
- Methods for quantifying magnesium ions in a sample include an ion-selective electrode and atomic absorption spectrometry.
- An ion-selective electrode is a sensor that selectively responds to target ions in a mixed solution containing various ions, converts them into electrochemical information, and derives ion activity from the response potential.
- Atomic absorption spectroscopy is a method of irradiating atomic vaporized metal atoms with light having a specific wavelength and quantifying the amount from the amount of absorption. It has been pointed out that both methods have good sensitivity and accuracy, but require preprocessing, so that sequential monitoring is not possible.
- the fluorescent probe that measures calcium ion has the largest share in this field, and a large number of calcium ion-selective fluorescent molecular probes have been synthesized, and the dynamics of calcium ion in nerve, muscle, and visceral cells can be monitored by fluorescence microscopy. It is imaged by using a focused laser microscope, and greatly contributes to the fields of medicine and biology.
- Magnesium ion is an important metal ion in the living body that controls relaxation agents, enzymatic reactions, and photosynthetic reactions of green plants.
- calcium ions a wide variety of fluorescent dye molecules have been developed and their behavior in the body has been clarified, whereas in the case of magnesium ions, effective fluorescent probes have not yet been developed. This is because magnesium ions have a higher hydration energy than calcium ions. It is difficult to obtain a large binding constant in water, and a competitive reaction with calcium ions occurs, and cannot form a complex with magnesium ions selectively.
- an object of the present invention is to provide a fluorescent probe for measuring magnesium ions, which can selectively form a complex with magnesium ions in an aqueous system.
- the inventors of the present application have found that, as a result of research, the diketone structure on the cyclic structure selectively forms a complex with magnesium ions in an aqueous system, and that a fluorescent molecule having this structure reacts with magnesium ions. It has been experimentally confirmed that it can be used as a selective fluorescent probe, and the present invention has been completed.
- R 1 is a hydrogen atom, a metal atom or an ester-forming group
- ⁇ is an atomic group that forms a cyclic structure with carbon atoms 1 and 2 in the formula
- X is a fluorescent atomic group
- A May form a condensed ring with a ring containing
- a fluorescent probe for measuring magnesium ion having a structure represented by the following formula:
- the present invention also provides use of the compound represented by the above general formula [I] for producing a fluorescent probe for measuring magnesium ion.
- the present invention provides a method comprising: bringing the above-mentioned fluorescent probe for measuring magnesium ion of the present invention into contact with a sample containing magnesium ion, and measuring the fluorescence of the fluorescent probe bound to the magnesium ion in the sample.
- the present invention provides a method for measuring magnesium ions in water.
- a selective fluorescent probe for measuring magnesium ion which can selectively form a complex with magnesium ion even in the presence of calcium ions in an aqueous system.
- the fluorescent probe of the present invention is considered to be extremely effective in analyzing the behavior of magnesium ions in a living body.
- Fig. 1 shows the relationship between the time (minutes) after the addition of FCGP and the fluorescence intensity of the fluorescence microscopic image of vascular endothelial cells after administration of the fluorescent probe KMG-20 synthesized in Example 1 of the present invention.
- the present invention is based on the novel finding that a mono-diketone structure on a cyclic structure selectively forms a complex with a magnesium ion in an aqueous system even in the presence of calcium ion.
- a monodiketone structure refers to a structure in which two carbonyl groups are bonded via a methylene group.
- magnesium ions in an aqueous system are selectively chelated by one diketone structure. Therefore, when the molecule has fluorescence, it can be used as a magnesium ion selective probe. it can.
- any molecule containing a cyclic ketone structure on a cyclic structure and an arbitrary fluorescent atom group in the molecule can be used as a probe for selective magnesium ion measurement, and is included in the scope of the present invention. That is, the fluorescent probe of the present invention is represented by the above general formula [I].
- the fluorescence emitted by the fluorescent group changes (increases or decreases) as a result of the molecule forming a complex with a metal. Therefore, the magnesium ion can be measured based on the change. In addition, even when the fluorescence characteristics hardly change due to the formation of the metal complex, the measurement of magnesium ions can be performed by removing the unbound probe from the sample. In this specification, “measurement” includes both quantification and detection.
- R 1 is a hydrogen atom, a metal atom or an ester-forming group.
- R 1 may be any metal atom, for example, because it ionizes in an aqueous medium to give a COO group, and this COO group plays a part in the chelation of magnesium ions.
- Monovalent metal atoms such as alkali metals such as sodium and potassium can be mentioned.
- the “ester-forming group” means R 1 which forms an ester with a carboxyl group to form an ester structure of COOR 1 .
- the structure of COOR 1 is esterified by the action of esterase in vivo. The bond is cleaved to form a coo group, and since this coo group plays a role in chelation of the magnesium ion, R 1 is not limited at all and may be any group.
- the cyclic structure containing A may be any cyclic structure as long as it supports the diketone structure on the cyclic structure, and the cyclic structure itself is not limited at all. Usually, it is a 5- to 7-membered ring, may be an aromatic ring such as a benzene ring, may have a structure such as cycloalkyl which may contain a double bond, or may be a heterocyclic ring.
- one carbonyl group is derived from a carboxyl group, so that R 1 can be arbitrarily selected.
- R 1 when measuring magnesium ion in a cell, For this purpose, a structure that facilitates passage through the cell membrane can be adopted as R 1 .
- R 1 As a structure of R 1 that makes it chew through cell membranes, general formula [IX]
- R 9 represents an alkylene group having 1 to 4 carbon atoms
- R 1Q represents an alkyl group having 1 to 4 carbon atoms.
- an alkyl group J includes both a linear alkyl group and a branched alkyl group unless otherwise specified.
- R 9 and R 1Q R 9 is preferably a methylene group, and R 1Q is most preferably a methyl group.
- R 1 is based on the following general formulas [M], [II I], [IV ], [V], [VII], [VI II]. The same applies to R 1 in [X], [XI II], [XIV], [XV] and [XVI].
- the fluorescent group represented by X in the general formula [I] may be any fluorescent group.
- various types of fluorescent probes for measuring calcium ions are known, and any fluorescent atomic group used for such a fluorescent probe can be employed in the present invention.
- fluorescent groups include rhodamine, fluorescein, naphthalene, anthracene, pyrene, coumarin, quino Examples thereof include phosphorus, stilbene, benzothiozole, and pyrazoline, but the fluorescent atomic group employed in the present invention is not limited thereto.
- those represented by the following general formula [II] are preferable from the viewpoint of sensitivity.
- R 1 has the same meaning as in general formula [I]
- Y is one O—, one CH 2 — or one NH—
- X ′ is a fluorescent atom.
- Each hydrogen atom may be substituted with an alkyl group having 1 to 6 carbon atoms, an alkoxyl group having 1 to 6 carbon atoms, an amino group, a halogen, or a nitro group).
- halogen is preferably fluorine, chlorine, bromine or iodine.
- a coumarin derivative represented by the general formula [III] is particularly preferable from the viewpoint of sensitivity.
- R 1 has the same meaning as in the general formula [I]
- X ′ ′ is a fluorescent atomic group, which may be a ring condensed with the benzene ring shown in the formula, and a compound represented by the formula [Ml]
- Each hydrogen atom bonded to any one or more carbon atoms constituting the ring structure is an alkyl group having 1 to 6 carbon atoms, an alkoxyl group having 1 to 6 carbon atoms, an amino group, each alkyl Group carbon number (It may be substituted with 1 to 6 mono- or dialkylamino, nodogen, or nitro groups.)
- each hydrogen atom bonded to a carbon atom constituting the ring may be substituted as described above.
- a substituent is not particularly necessary, an unsubstituted structure is simple and preferable.
- X ′ ′′ various known fluorescent atomic groups can be preferably employed.
- a preferable example is a structure in which a condensed benzene ring of a coumarin moiety is further condensed to form a total of 3 to 5 condensed ring structures.
- Examples of such a preferred structure include those having a structure represented by the following general formula [IV] or [V].
- R 1 has the same meaning as the general formula [I], and is bonded to any one or more carbon atoms constituting the ring structure in the formula [V]
- Each hydrogen atom is replaced by an alkyl group having 1 to 6 carbon atoms, an alkoxyl group having 1 to 6 carbon atoms, an amino group, a mono- or dialkylamino having 1 to 6 carbon atoms, a halogen, or a nitro group of each alkyl group. It may be. However, as described above, these substituents are not particularly necessary, and those having no substituent are preferable.
- the structure represented by the general formula [V] is a structure in which one condensed benzene ring having a conjugated double bond is added to the structure represented by the general formula [IV]. Since the bonds are larger than those of general formula [IV], Excitation on the longer wavelength side than that shown by the general formula [IV] is possible, and observation with a laser microscope using excitation light with a wavelength of about 488 nm becomes possible. Therefore, it is particularly advantageous for purposes such as observing the dynamics of magnesium ions in cells.
- the present invention has excellent optical properties such as a complexing ability with respect to magnesium ions, absorption spectrum and fluorescence spectrum, and can be uniformly stained when administered intracellularly, and has high light intensity.
- Preferred examples of the fluorescent probe include a compound represented by the following general formula [XI II].
- R 1 is the same as in the general formula [ ⁇ , and R 13 , R 14 , R 15, and R 16 are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a halogen.
- the compound (KMG-27) in which R 13 , R 14 , R 15 and R 16 are all methyl groups is a compound (KMG-27) which is a preferred compound of the present invention produced in Example 1 below and has a characteristic (complex).
- KMG-27 a compound of the present invention produced in Example 1 below and has a characteristic (complex).
- the ability to form, the optical properties, and the uniform staining when administered to cells can be maintained, and this compound was found to have a higher fluorescence intensity (brighter) than KMG-20.
- an increase in fluorescence intensity was observed when a stimulant that uniformly dispersed in the cell and increased the magnesium ion concentration was given.
- the compound represented by the general formula [XI M] can be obtained by performing a confocal laser-scanning fluorescence microscope equipped with a 452 nm Ar laser, and when the subject to be examined is a cell, three-dimensional information of the cell. Can be obtained.
- R 1 has the same meaning as in the general formula [I], and R 17 and R 18 independently represent a hydrogen atom, a hydroxyl group, a halogen, a carboxyl group or one COOR 19 (however, R 19 3 ⁇ 41 (Except when R 17 and R 18 are both hydrogen atoms).
- an alkali metal such as sodium or potassium is preferable.
- 1 7 ⁇ Pi 1 ⁇ 1 8 are all preferably that it is a said group other than a hydrogen atom, it is preferred in particular hydroxyl both.
- Performing functional group modification on the hydroxyl group is not only simple in synthesis, but also has established various organic synthesis reactions. Therefore, the above compound has not only a compound having increased water solubility than KMG-20 but also a use as a reaction intermediate in synthesizing a compound superior to KMG-20.
- the compound represented by the general formula [XIV] can be obtained by using a confocal laser-scanning fluorescence microscope equipped with a 452 nm Ar laser to obtain three-dimensional information of the cell if the subject is a cell. Can be obtained.
- a compound represented by the following general formula [XV] can be exemplified.
- R 20 , R 21 , R 22 , R 23 , R 24 and And R 25 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a halogen or a hydroxyl group.
- X ′ ′′ is a fluorescent atomic group having a condensed ring containing 2 to 4 rings, and 1 Z— is the fluorescent atomic group and a benzene ring represented by the general formula [III]. Represents the atomic group to be bonded
- examples of X ′ ′′ include various known fluorescent atomic groups such as rhodamine-fluorescein.
- 1- is a structure merely linking a coumarin structure and a fluorescent atomic group, it is not limited at all, and examples thereof include a lower alkylene group having 1 to 4 carbon atoms. it can.
- a structure containing a polar group such as an amine, a carbonyl group, a thiocarbonyl group, an ether group, or the like is preferable.
- Preferred examples include, but are not limited to, one example.
- Preferred examples of X ′ ′′ in the general formula [VI] include those represented by the following general formula [VII], which include rhodamine-fluorescein, a well-known fluorescent atomic group. Is done.
- R 2 is a hydrogen atom or a propyloxyl group
- R 3 and R 4 are each independently a hydroxyl group, an alkyl group having 1 to 6 carbon atoms, or a carbon number of each alkyl moiety.
- R 1 has the same meaning as in the general formula [, and R 5 , R 6 , R 7 and R 8 independently represent an alkyl group having 1 to 6 carbon atoms.
- a fluorescent probe having a structure represented by the following general formula [X] in which an amine is bound to a coumarin derivative can be mentioned.
- R 1 has the same meaning as in the general formula [I], ⁇ and! ⁇ , Independently of each other, hydrogen, hydroxyl, halogen, alkyl having 1 to 6 carbons, haloalkyl having 1 to 6 carbons)
- the group containing one or two monosaccharide structures or an acylated product thereof is a glycosyl group, a glycoside group, a fructosyl group, a fructoside group, or a compound represented by the formula [XI]
- the monosaccharide structure in the formula [X] is bonded to the nitrogen atom in the formula [X] via an alkyl group or an alkoxyl group having 1 to 6 carbon atoms.
- Preferred examples of such a compound include a compound represented by the following formula [XII].
- R 26 may or may not be present, and if present, an alkylene group having 1 to 5 carbon atoms; 27 represents 1 ⁇ 11 "1-, NH-CO- or OCO —; R 28 is a hydrogen atom, a carboxyl group or COOR 33 (where R 33 is a monovalent metal atom or an alkyl group having 1 to 5 carbon atoms); R 29 and R 30 are each independently hydrogen Atom, alkyl group or halogen 1-5 carbon atoms; R 31 represents a hydroxyl group, an alkyl group of 1-5 carbon atoms, or carbon atoms in each alkyl moiety has dialkylamino group of 1 to 5; combining R 32 and the ring and has ZZZI represents a single bond or a double bond, which is to indicate a single bond, R 32 is a hydroxyl group, a 1-5 carbon alkyl group, or a dialkylamino carbon atoms of 1 to 5 each alkyl moiety group, a double to indicate
- R 2 is one NH—CO— or one—CO—
- the direction ie, when one NH—CO— is one NH— in the general formula [XVI] (Whether one CO—is higher or lower, or, in the case of one O CO—, is _0—higher or lower than one CO— in the general formula [XVI]) Is not limited, and both are included.
- R 28 is a hydrogen atom or a carboxyl group
- R 29 and R 30 are a hydrogen atom
- R 31 is a dialkylamino group
- R 32 is a double bond via a double bond.
- it has a dialkyl quaternary Amin which is, in particular, R 2 6 is methylene group
- R 27 is one NH-
- R 28, R 29 and R 30 are both hydrogen atoms
- R 31 is N (CH 3 )
- Those in which 2 and R 32 are two N + (CH 3 ) 2 are preferred.
- the fluorescent chromophore represented by the general formula [XVI] is rhodamine or fluorescein, preferably rhodamine, it has a high molar extinction coefficient and quantum yield, good light stability, and fluorescence intensity It has the property of not depending.
- rhodamine has been used as a stain for mitochondria in cells. Therefore, it has been clarified that KMG-20 and its analogs are uniformly dispersed in the cytoplasm, and also dispersed around the nucleus except for the compound represented by the general formula [XVI]. By using it, it becomes possible to further stain a local site of the cell and observe the dynamics of magnesium ion at that site.
- the fluorescent probe of the present invention can be easily manufactured based on a known technique.
- a preferred fluorescent probe of the present invention can be obtained by bonding a known fluorescent atomic group to a coumarin derivative having a carbonyl group or a salt or ester thereof. Therefore, it is easy for those skilled in the art to synthesize the fluorescent probe of the present invention.
- examples of a method for synthesizing a plurality of fluorescent probes are also described in detail.
- the fluorescent probe of the present invention can be used in exactly the same manner as a conventional fluorescent probe, in which a fluorescent probe is allowed to act on a sample, and excitation light is applied to measure the fluorescence.
- a solution dissolved in a polar organic solvent such as dimethyl sulfoxide (DMS0)
- DMS0 dimethyl sulfoxide
- the concentration of the probe in the polar organic solvent is not particularly limited, but is generally about 0.1 mM to 10 mM, preferably about 0.5 m to 2 mM, and the concentration of the probe after addition to the buffer.
- the concentration of the probe is not particularly limited, it is generally about 1; uM to about 0.1 mM, preferably about 5 M to about 2 mM.
- the incubation time is not particularly limited and can be appropriately selected according to the sample, but is usually about 5 minutes to 1 hour.
- the incubation temperature is not particularly limited, and a temperature suitable for each sample can be appropriately selected.However, it is usually about 0 ° C to 40 ° C, and when the sample is a cell or a tissue, It is preferable that the temperature be suitable for the culture (for example, 37 ° C. for human-derived cells or tissues).
- Fluorescence can be measured using a commercially available fluorimeter, or when examining the dynamics of intracellular magnesium ions, it can be observed using a fluorescence microscope or a confocal laser microscope. Such a measuring method itself is known.
- the specimen is not particularly limited, and may be any substance for measuring magnesium ions contained therein, and preferable examples include various cells and tissues. When the specimen is a cell or tissue, the culture solution of the cell or tissue can be replaced with the above-mentioned fluorescent probe solution, incubated as described above, and the fluorescence can be measured.
- a solution of 41.0 g (3.48 mttiol) of a compound in 5.0 ml of a 5% aqueous sodium hydroxide solution in a 100 ml eggplant-shaped flask was added with 5.0 ml of ethanol, and the mixture was refluxed for 12 hours. After allowing to cool, 1. ON hydrochloric acid was added to make it acidic, and the mixture was extracted with ether. After the organic layer was washed with water, it was dried over anhydrous sodium sulfate. After the solvent was distilled off under reduced pressure, the residue was dried under reduced pressure using a pump.
- Example 2 A fluorescent probe ((17-aza-5-oxa-6-oxopentacyclo [11 ⁇ 7.1.0 ⁇ 2, 11> ⁇ 0> 4, 9> .0 ⁇ 17, 21>]) -Synthesis of 1 (21), 2 (11), 3, 7, 9 (10), 12-hexen-7-ylcarponyloxy) methyl acetate
- the compound and 5.0 ml of concentrated hydrochloric acid were added to a 10 ml eggplant-shaped flask, followed by stirring at room temperature for 24 hours.
- the reaction solution was poured into ice water and extracted with methylene chloride.
- the organic layer was washed with water and dried over anhydrous sodium sulfate. After evaporating the solvent under reduced pressure, an orange solid was obtained.
- Example 8 Measurement of Intracellular Magnesium Ion Using Fluorescent Probe (Part 1) Intracellular magnesium ion was measured using fluorescent probe KNIG-20 synthesized in Example 1. Since the fluorescent probe KMG-20 has an acetomethyl group, it has high lipophilicity and is easy to transfer from the cell culture solution to the cell membrane. The group is removed and becomes a water-soluble compound having a carboxyl group again, and diffuses into the cytoplasm. KMG-20 complexes with magnesium ions to increase its fluorescence.
- a DNIS0 solution (1,0 mM) of the fluorescent probe KMG-20 was added to the Hanks-HEPES buffer to a final concentration of 10.0 M, and sonicated.
- Petri dish at 37 ° C in culture medium The culture solution of the vascular endothelial cells cultured in the above was replaced with the above KMG-20 solution and incubated at 37 ° C for 30 minutes. The cells were then replaced with fresh buffer and the cells were observed at 20 ⁇ magnification with a fluorescence microscope AxiovertS100.
- the excitation wavelength was 440 nm and the detection wavelength was 500-530 nm.
- cells before administration of the fluorescent probe were also observed with a fluorescence microscope.
- magnesium ion binds to the oxygen atom of the phosphate moiety of ATP, ADP, sugar phosphate, nucleic acid, and other phosphorylation substrates to neutralize the charge, and acts as an acid catalyst to form the phosphate ester compound. It is known that enzymes used as substrates require magnesium ions as cofactors. FGGP acts as an inhibitor of mitochondrial respiration in cells, so ATP activity in cells decreases, free magnesium concentration increases, and KMG-20 forms a complex with magnesium ions, resulting in fluorescence intensity. It is considered that has increased.
- Example 9 Measurement of Intracellular Magnesium Ion Using Fluorescent Probe (Part 2) Intracellular Magnesium Ion Using KMG-27 Synthesized in Example 4 as Fluorescent Probe On kinetics were measured.
- this fluorescent probe Since this fluorescent probe has an acetoxmethyl group, it has high lipophilicity and is easily transferred from the cell culture solution to the cell membrane.
- the acetoxmethyl group is released by an intracellular ester hydrolase near the cell membrane. It again becomes a water-soluble compound having a lipoxyl group and diffuses into cells.
- a DMS0 solution (1.0 mM) of the fluorescent probe was added to the Hanks-HEPES buffer solution to a final concentration of 10.0 ⁇ , and sonicated.
- the cells were replaced with a new buffer solution, and the cells were observed with a fluorescence microscope Axi overt S100.
- the excitation wavelength was set at 440 nm, and the detection wavelength was set at 500-530 nm.
- cells before administration of the fluorescent probe were also observed with a fluorescence microscope.
- magnesium ions are known to bind to oxygen atoms in the phosphoric ester portion of phosphorylation substrates such as ATP, ADP, and nucleic acids, neutralize charge, and act as an acid catalyst.
- the selectivity for magnesium ion of KMG-20 synthesized in Example 1 and KMG-27 synthesized in Example 4 was measured. This measurement was specifically performed as follows.
- the conditions of the fluorometer were as follows: excitation wavelength: 448 nm, slit width: excitation side 2.5 nm, fluorescence side 2.5 nm, photovoltage: 700 V, scan speed: 240 nm / min. two.
- the selectivity (K Mg / K Ca ) of the fluorescent probe of the present invention for magnesium ion was more than 200 times higher than that of the conventional magnesium ion probe.
- the fluorescent probe of the present invention is a selective fluorescent probe for measuring magnesium ions, which can selectively form a complex with magnesium ions even in the presence of calcium ions in an aqueous system.
- the fluorescent probe of the present invention is considered to be very effective in analyzing the behavior of magnesium ions in a living body.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US10/333,976 US7109043B2 (en) | 2000-07-28 | 2001-07-25 | Fluorescent probe for magnesium ion determination |
JP2002517501A JP3624214B2 (ja) | 2000-07-28 | 2001-07-25 | マグネシウムイオン測定用蛍光プローブ |
AU2002229152A AU2002229152A1 (en) | 2000-07-28 | 2001-07-25 | Fluorescent probe for magnesium ion determination |
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JP2000228489 | 2000-07-28 | ||
JP2000-228489 | 2000-07-28 |
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WO2002012867A1 true WO2002012867A1 (fr) | 2002-02-14 |
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PCT/JP2001/006401 WO2002012867A1 (fr) | 2000-07-28 | 2001-07-25 | Sonde fluorescente pour analyse d'ions magnesium |
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US (1) | US7109043B2 (ja) |
JP (1) | JP3624214B2 (ja) |
AU (1) | AU2002229152A1 (ja) |
WO (1) | WO2002012867A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012532318A (ja) * | 2009-07-01 | 2012-12-13 | ボード・オブ・リージエンツ,ザ・ユニバーシテイ・オブ・テキサス・システム | サンプルにおける検体の存在および/または濃度を決定する方法 |
JP2016505824A (ja) * | 2012-11-29 | 2016-02-25 | アイデックス ラボラトリーズ インコーポレイテッドIDEXX Laboratories, Inc. | 選択的にマグネシウムイオンを決定するための多層デバイス |
CN108003173A (zh) * | 2017-12-21 | 2018-05-08 | 中南大学 | 一种特异性识别水合肼的荧光探针 |
Families Citing this family (2)
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AT508680B1 (de) * | 2009-05-19 | 2011-03-15 | Onkotec Gmbh | Verfahren zur qualitativen und/oder quantitativen bestimmung von tumorzellen |
CN105572018A (zh) * | 2015-12-08 | 2016-05-11 | 康敏 | 以荧光指示剂结合流式细胞技术测量红细胞内游离镁离子浓度的方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5853758A (ja) * | 1981-09-28 | 1983-03-30 | Wako Pure Chem Ind Ltd | マグネシウム測定試薬 |
JPS62261063A (ja) * | 1986-04-29 | 1987-11-13 | イ−ストマン コダツク カンパニ− | マグネシウムイオンの測定方法 |
JPH04120464A (ja) * | 1989-12-15 | 1992-04-21 | F Hoffmann La Roche Ag | カルシウムおよび(または)マグネシウムの測定方法および測定用試薬組成物 |
Family Cites Families (3)
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AT393035B (de) * | 1989-04-25 | 1991-07-25 | Avl Verbrennungskraft Messtech | Verfahren zur quantitativen bestimmung zumindest eines chemischen parameters eines probenmediums |
EP0552108B1 (en) * | 1992-01-17 | 1999-11-10 | Lakowicz, Joseph R. | Energy transfer phase-modulation fluoro-immunoassay |
JP2000252069A (ja) * | 1999-03-03 | 2000-09-14 | Honda Motor Co Ltd | 有機エレクトロルミネッセンス素子とその製造方法 |
-
2001
- 2001-07-25 JP JP2002517501A patent/JP3624214B2/ja not_active Expired - Fee Related
- 2001-07-25 AU AU2002229152A patent/AU2002229152A1/en not_active Abandoned
- 2001-07-25 US US10/333,976 patent/US7109043B2/en not_active Expired - Fee Related
- 2001-07-25 WO PCT/JP2001/006401 patent/WO2002012867A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5853758A (ja) * | 1981-09-28 | 1983-03-30 | Wako Pure Chem Ind Ltd | マグネシウム測定試薬 |
JPS62261063A (ja) * | 1986-04-29 | 1987-11-13 | イ−ストマン コダツク カンパニ− | マグネシウムイオンの測定方法 |
JPH04120464A (ja) * | 1989-12-15 | 1992-04-21 | F Hoffmann La Roche Ag | カルシウムおよび(または)マグネシウムの測定方法および測定用試薬組成物 |
Non-Patent Citations (1)
Title |
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CURTIS F. CHAPMAN ET AL.: "Fluorescence studies of solvation and solvation dynamics in tonic solutions", THE JOURNAL OF PHYSICAL CHEMISTRY, vol. 95, 1991, pages 9095 - 9114, XP002945520 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012532318A (ja) * | 2009-07-01 | 2012-12-13 | ボード・オブ・リージエンツ,ザ・ユニバーシテイ・オブ・テキサス・システム | サンプルにおける検体の存在および/または濃度を決定する方法 |
JP2014142361A (ja) * | 2009-07-01 | 2014-08-07 | Board Of Regents The Univ Of Texas System | サンプルにおける検体の存在および/または濃度を決定する方法 |
JP2016505824A (ja) * | 2012-11-29 | 2016-02-25 | アイデックス ラボラトリーズ インコーポレイテッドIDEXX Laboratories, Inc. | 選択的にマグネシウムイオンを決定するための多層デバイス |
CN108003173A (zh) * | 2017-12-21 | 2018-05-08 | 中南大学 | 一种特异性识别水合肼的荧光探针 |
Also Published As
Publication number | Publication date |
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AU2002229152A1 (en) | 2002-02-18 |
US7109043B2 (en) | 2006-09-19 |
US20040044228A1 (en) | 2004-03-04 |
JP3624214B2 (ja) | 2005-03-02 |
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