EP3491143A1 - Substrat spécifique d'une isoenzyme de l'aldh - Google Patents
Substrat spécifique d'une isoenzyme de l'aldhInfo
- Publication number
- EP3491143A1 EP3491143A1 EP17749666.8A EP17749666A EP3491143A1 EP 3491143 A1 EP3491143 A1 EP 3491143A1 EP 17749666 A EP17749666 A EP 17749666A EP 3491143 A1 EP3491143 A1 EP 3491143A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aldh
- specific substrate
- substrate according
- isoenzyme
- cells
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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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
- C12Q1/007—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving isoenzyme profiles
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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
- C12Q1/26—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving oxidoreductase
- C12Q1/32—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving oxidoreductase involving dehydrogenase
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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
- C12Q2334/00—O-linked chromogens for determinations of hydrolase enzymes, e.g. glycosidases, phosphatases, esterases
- C12Q2334/20—Coumarin derivatives
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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
- C12Q2334/00—O-linked chromogens for determinations of hydrolase enzymes, e.g. glycosidases, phosphatases, esterases
- C12Q2334/40—Triphenylmethane dye chromogens, e.g. fluorescein derivatives
Definitions
- the present invention relates to a substrate specific for an isozyme I ALDH, a composition comprising at least one such substrate, a diagnostic marker comprising such a substrate, and their associated uses and methods.
- ALDHs Aldehydes dehydrogenases
- ALDHs are a group of enzymes that catalyze the oxidation (dehydrogenation) of aldehydes.
- nineteen genes encoding ALDHs have been identified in the human genome. These genes participate in a wide variety of biological processes, including the detoxification of aldehydes generated exogenously and endogenously.
- the ALDHs are found in all subcellular regions including in the cytosol, in the mitochondria, in the endoplasmic reticulum and the core, many of them ending up in more than one compartment. Most ALDHs have a broad tissue distribution and display distinct substrate specificity.
- ALDHs Generally considered to be detoxifying enzymes, ALDHs have been shown to protect against aldehyde-induced cytotoxicity. ALDHs also have a central role in physiological functions and processes, such as embryogenesis and development.
- the ALDH1 isoenzyme would play a central role in embryogenesis and development mediated by retinoic acid signaling. It would also be involved in the detoxification of methional while the ALDH3 be involved in the 4-hydroxynonal, these two compounds being apoptogenic endogenous aldehydes. ALDH1 and ALDH3 are also thought to be related to cellular defense mechanisms against UV radiation inducing damage in ocular tissue.
- the ALDH2 isozyme is itself a mitochondrial isozyme primarily related to the detoxifying acetaldehyde in the second step in the metabolism of alcohol.
- ALDHs were studied for their potential use as a universal marker of normal and cancer stem cells, since some of the ALH isoenzymes would have been identified as key elements of these cells. For example, ALDH 1 has been shown to be elevated in hematopoietic stem cells and could be used to isolate them.
- ALDEFLUOR TM assay (Stemcell Technologies Inc.). This ALDEFLUOR TM test uses a fluorescent substrate that can be metabolized by many isoenzymes of ALDH.
- the substrate of ALDH BODIPY-aminacétaldéhyde (BAAA) is converted to BODIPY aminoacetate in the presence of ALDH, and the latter accumulates in the cells and enhances their fluorescence by issuing a green color.
- BAAA BODIPY-aminacétaldéhyde
- the ALDEFLUOR TM does not differentiate the various isoenzymes of ALDH.
- the subject of the present invention is therefore a substrate specific for an isoenzyme of ALDH comprising a compound:
- R-COO-A (I) resulting from the esterification of a fluorescent tracer A-OH with an acylating agent derived from the corresponding acid RCOOH, wherein R is selected so as to form the retinoate, propionate, octanoate, benzoate, 4-aminobutyrate, the hexanoate, 4-diethylaminobenzoate or 4-hydroxy-2-nonenoate; or
- a substrate specific for an isoenzyme of ALDH comprising a compound:
- R and R ' are chosen so as to form the retinoate, propionate, octanoate, benzoate, 4-aminobutyrate, hexanoate, 4-diethylaminobenzoate or 4-hydroxy-2-nonenoate; and
- A-OH is a fluorescent tracer.
- A is thus the esterified form of A-OH which is a fluorescent tracer, when the latter is free.
- the present invention also concerns the use of a specific substrate in an invention to quantify isozyme of ALDH in a cell population.
- the present invention also relates to the use of a specific substrate of the invention to distinguish healthy stem cells from cancer stem cells.
- the present invention also relates to the use of a specific substrate according to the invention to characterize the different stages of cancer or the various stages of differentiation of stem cells.
- the present invention also relates to a composition comprising at least one specific substrate according to the invention.
- the present invention also relates to a diagnostic marker comprising a specific substrate according to the invention.
- the present invention also relates to the use of a marker according to the invention for the diagnosis of a disease involving dysregulation of a isozyme of ALDH.
- the marker is used to determine if a subject is likely to respond to a therapy that inhibits the activity of an isoenzyme of ALDH and / or directed against cancer stem cells.
- the present invention also relates to a method for distinguishing cells expressing at least one isoenzyme of ALDH in a cell population, said method comprising:
- the present invention also relates to a kit for quantifying an isozyme of ALDH comprising at least one specific substrate according to the invention.
- the invention relates to a specific substrate of an isozyme of ALDH comprising a compound:
- R-COO-A (I) resulting from the esterification of a fluorescent tracer A-OH with an acylating agent derived from the corresponding acid RCOOH, wherein R is selected so as to form the retinoate, propionate, octanoate, benzoate, 4-aminobutyrate, the hexanoate, 4-diethylaminobenzoate or 4-hydroxy-2-nonenoate; or
- R and R ' identical or different, are chosen so as to form the retinoate, propionate, octanoate, benzoate, 4-aminobutyrate, hexanoate, 4-diethylaminobenzoate or 4-hydroxy-2- nonenoate.
- the compound of formula (II) may also be described as having the formula: R-COO-A-OOC-R ', wherein the fluorescent tracer is of formula HO-A-OH and is fluorescein.
- specific substrate of an isoenzyme of ALDH means a chemical molecule that will specifically interact with a particular isoenzyme of ALDH as ALDH1 I or I ALDH3 for example, to produce a chemical reaction which, in the scope of the present invention, will free a fluorescent molecule (a-OH) allowing to identify with certainty said particular isozyme of ALDH.
- the specific substrate is cleaved by an isozyme of ALDH that allow the release of the fluorescent tracer A-OH.
- the specific substrate according to the invention results from the esterification of the fluorescent tracer A-OH with an acylating agent derived from the corresponding acid RCOOH or R'COOH.
- the corresponding ester is propionate
- the corresponding ester hexanoate when R and / or R 'whose acid RCOOH and / or R'COOH is a retinoic acid
- the corresponding ester is the retinoate when R and / or R 'whose acid RCOOH and / or R'COOH is a benzoic acid
- the corresponding ester is benzoate when R and R' of which the acid RCOOH and / or R 'is a COOH 4-diethyl-aminobenzoic acid
- the corresponding ester is diethyl-4-aminobenzoate, when R and R 'of which the acid RCOOH and / or R'COOH is 4-hydroxy-2-
- the corresponding ester is octanoate, when R and / or R' is ethyl, the corresponding ester is the propionate, and when R / or R 'is phenyl, the corresponding ester is benzoate, when R and / or R' is 3-aminopropyl, the corresponding ester is 4-aminobutyrate, etc.
- A is defined such that the hydroxylated form of A which is A-OH), is a fluorescent tracer.
- the latter forms an ester with specific substrates by formulas (I) R-COO-A and (II) R-COO-A-OOC-R 'which after cleavage of the ester function leads to the release of the acid RCOOH and / or R'COOH and said fluorescent tracer A-OH.
- Table 1 gives the structure of the substituents R and R ' according to the invention, linked to the fluorescent tracer. The table also shows the specificity of each vis-à-vis substrate isoenzymes of ALDH.
- fluorescent tracer is meant a chemical compound that can be identified by fluorescence.
- a fluorescent tracer of the invention is a fluorochrome or a fluorophore, ie a chemical substance capable of emitting fluorescence light after excitation.
- the fluorophore is released under the action of an isozyme of ALDH.
- the fluorophores are well known to those skilled in the art (see eg Manafi (2000) Int J Food Microbiol. 60:. 205-218).
- A-OH is chosen from 7-hydroxycoumarin, a fluorophore of the tokyo green family, in particular 2-methyl-4-methoxy-Tokyo Green, resorufin and fluorescein. .
- These tracers are known to the art and are either commercially available or can be synthesized by methods well known to the skilled person.
- 2-methyl-4-methoxy-Tokyo Green is also named 6-Hydroxy-9- (4-methoxy-2-methylphenyl) -3H-xanthen-3-one, 2-Me-4-OMe TokyoGreen or 2-Me-4- OMe TG.
- the following molecules the retinoate resorufin, resorufin propionate, octanoate resorufin, benzoate resorufin, 4-aminobutyrate resorufin, the hexanoate resorufin, 4-diéthylaminobenzoate resorufin or 4-hydroxy-2-nonenoate resorufin, the retinoate 7-hydroxycoumarin propionate, 7-hydroxycoumarin, octanoate 7-hydroxycoumarin benzoate, 7-hydroxycoumarin, the 4- aminobutyrate 7-hydroxycoumarin, the hexanoate 7-hydroxycoumarin, 4-diéthylaminobenzoate of 7-hydroxycoumarin or 4-hydroxy-2-nonenoate 7- hydroxycoumarin, the retinoate 2-methyl-4-methoxy-Tokyo Green, propionate 2-
- ALDH aldehyde dehydrogenases
- ALDHs In humans, 19 ALDHs have been identified, including as many genes. They are divided into subgroups: ALDHI comprising ALDH1 A1, ALDH1 A2, ALDH1 A3, ALDH1 B1, ALDH1 L1 and ALDH1 L2, ALDH2, I ALDH3 comprising ALDH3A1, ALDH3A2, ALDH3B1 and ALDH3B2, I ALDH4, ALDHS, I ALDH6, TALDH7 the ALDH8, I ALDH9 the ALDHI 6, and ALDH18.
- ALDHI comprising ALDH1 A1, ALDH1 A2, ALDH1 A3, ALDH1 B1, ALDH1 L1 and ALDH1 L2, ALDH2, I ALDH3 comprising ALDH3A1, ALDH3A2, ALDH3B1 and ALDH3B2, I ALDH4, ALDHS, I ALDH6, TALDH7 the ALDH8, I ALDH9 the ALDHI 6, and ALDH18.
- a specific substrate of the invention is a substrate specific for the ALDHI or of ALDH3.
- R and R 'identical or different are chosen so as to form the retinoate, hexanoate or propionate.
- a specific substrate according to the invention is selected from retinoate resorufin, the hexanoate resorufin, resorufin propionate, retinoate 7-hydroxycoumarin, the hexanoate 7- hydroxycoumarin propionate, 7-hydroxycoumarin, the retinoate 2-methyl-4- methoxy-Tokyo Green, hexanoate, 2-methyl-4-methoxy-Tokyo Green, propionate 2-methyl- 4-methoxy-Tokyo Green, fluorescein di-retinoate, fluorescein dipropionate, fluorescein di-hexanoate.
- isozyme of ALDH is ALDH3 I
- R and R 'identical or different are chosen so as to obtain octanoate, 4-hydroxy-2-nonenoate, the 4-diethylaminobenzoate or benzoate.
- a specific substrate according to the invention is selected from octanoate resorufin, 4-hydroxy-2-nonenoate resorufin, benzoate resorufin, 4- diéthylaminobenzoate resorufin octanoate 7-hydroxycoumarin, 4-hydroxy-2-nonenoate 7-hydroxycoumarin benzoate, 7-hydroxycoumarin, 4-diéthylaminobenzoate of 7-hydroxycoumarin, octanoate 2-methyl-4- methoxy-Tokyo Green, 2-methyl-4-methoxy-Tokyo Green 4-hydroxy-2-nonenoate, 2-methyl-4-methoxy-Tokyo Green benzoate, 2-methyl-4-methoxy hexanoate -Tokyo Green, fluorescein di-octanoate, fluorescein di-4-hydroxy-2-nonenoate, fluorescein di-benzo
- R and R 'identical or different are chosen so as to obtain 4-aminobutyrate.
- a specific substrate of the invention is selected from 4-aminobutyrate resorufin, 4-aminobutyrate 7-hydroxycoumarin, 4-aminobutyrate, 2-methyl- 4-methoxy-Tokyo Green, fluorescein di-4-aminobutyrate.
- the present invention also relates to a composition comprising at least one specific substrate according to the invention.
- composition according to the invention thus comprises 1 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 17, 18, 19 or more specific substrates according to the invention.
- the composition makes it possible to directly detect and identify several isozymes of ALDH.
- the composition comprises a substrate specific for the ADLHI and a specific substrate of the ALDH3 or a specific substrate of the ALDHI and I ALDH9, or ALDH3 and ALDH 9 or the ALDHI to TALDH3 and ALDH9.
- composition according to the invention may for example comprise one or more of the following specific substrates: the retinoate resorufin, resorufin propionate, octanoate resorufin, benzoate resorufin, 4-aminobutyrate resorufin, the hexanoate resorufin or 4-hydroxy-2-nonenoate resorufin, 4- diéthylaminobenzoate resorufin, the retinoate 7-hydroxycoumarin propionate, 7-hydroxycoumarin, octanoate 7-hydroxycoumarin, 7-hydroxycoumarin benzoate, 7-hydroxycoumarin 4-aminobutyrate, 7-hydroxycoumarin hexanoate or 7-hydroxycoumarine 4-hydroxy-2-nonenoate, 7-hydroxycoumarine 4-diethylaminobenzoate, 2-methyl-4-methoxy retinoate Tokyo Green, propionate 2-methyl-4-methoxy
- the specific substrate according to the invention is characterized in that isozyme of ALDH is detected in a cell population.
- cell population is meant a set of cells of the same origin or of different origin and whose characteristics (genetic sequences, levels of expression, state of differentiation) are identical or different.
- the cell population comprises at least 2 cells, for example 10, 100, 1000 or 1 000 cells.
- the specific substrate is detected in vitro or ex vivo by the use of the fluorescence technique plate of flow cytometry technique and / or immunofluorescence.
- the specific substrates according to the invention are useful for identifying the different isoenzymes of ALDH. They allow in particular to identify cells expressing different ALDH isoenzymes (eg, certain types of stem cells) and distinguish in a mixed population of those who do not isoenzyme expression of ALDH or not the same isozyme of ALDH.
- the substrates of the invention can also be used to distinguish cells that express isozyme of ALDH to a high degree of the cells that express it to a lesser degree.
- the present invention relates to the use of at least one specific substrate according to the invention to quantify at least one isoenzyme of ALDH in a cell population.
- the present invention also relates to the use of at least one specific substrate according to the invention to isolate and / or select a portion of a cell population of overexpressing an isoenzyme ALDH.
- the present invention also relates to the use of at least one specific substrate according to the invention to sort all or part of a cell population according to their expression of at least one isoenzyme of ALDH.
- At least one isoenzyme of ALDH means 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1, 12, 13, 14, 15, 17, 18 or 19 isoenzymes of ALDH.
- the 19 isoenzymes have been described previously.
- At least one specific substrate according to the invention has the same meaning as previously described.
- the present invention also relates to a method for quantifying at least one isoenzyme of ALDH in a cell population, comprising the use of at least one specific substrate according to the invention.
- Quantification can be performed using a plate fluorescence technique.
- the identification and / or quantification of the various isozymes of ALDH thus enables to distinguish and / or identify different cell types.
- the present invention also relates to the use of at least one specific substrate of the invention to distinguish healthy stem cells from cancer stem cells.
- It also relates to a method for distinguishing healthy stem cells from cancer stem cells comprising the use of at least one specific substrate of the invention.
- Said method and said use also make it possible to isolate these cells, including for example a step of isolation of cells exhibiting fluorescence.
- cancer stem cells are meant, for example, stem cells of cancer of the bladder, breast, cervix, colon, head and neck, liver, lung, pancreas, prostate, ovarian, leukemia.
- the specific substrate according to the invention is used to distinguish the stem cells of solid cancers and / or hematologic malignancies.
- solid cancer is meant, for example, breast, lung or prostate cancer.
- hematological malignancies means leukemia, lymphomas or myeloma.
- the stem cells of interest are cancerous or healthy hematopoietic cells.
- the identification and / or quantification of different isoenzymes of ALDH also allows to characterize different stages of a disease or differentiation of cells.
- the present invention also relates to the use of at least one specific substrate according to the invention to characterize the different stages of cancer or the various stages of differentiation of stem cells.
- It also relates to a method for characterizing the various stages of cancer or the various stages of stem cell differentiation comprising the use of at least one specific substrate according to the invention.
- differentiated steps of stem cells are meant the steps which are well known to those skilled in the art, in particular the following steps: undifferentiated cells, poorly differentiated cells, moderately differentiated cells and well differentiated cells.
- different stages of cancer refers to the steps that are well known to those skilled in the art, in particular the following steps: undifferentiated tumor or cancer, tumor or cancer poorly differentiated, moderately differentiated tumor or cancer, or tumor well differentiated cancer.
- Specific substrates according to the invention allowing the identification and / or quantification of the various isozymes of ALDH, are useful as a diagnostic marker.
- the present invention therefore also relates to a diagnostic marker comprising a specific substrate according to the invention.
- diagnosis marker is meant the meaning commonly attributed to these terms by a person skilled in the art, that is to say a characteristic element making it possible to confirm or invalidate a diagnosis.
- the diagnostic marker according to the invention is a specific substrate according to the invention.
- the present invention also relates to the use of a marker according to the invention for the diagnosis of a disease involving deregulation of an isoenzyme of ALDH. It also relates to a method for diagnosing a disease involving dysregulation of an isoenzyme of ALDH comprising the use of a marker according to the invention.
- a disease involving deregulation of an isoenzyme of ALDH is a disease involving said isoenzyme will be overexpressed or under expressed in the subject patient relative to the so-called normal expression, that is to say the expression observed in a holy subject.
- overexpressed or “overexpression” means a level of expression in the patient about higher than the healthy subject.
- under expressed means a level of expression in the subject sick less than that of healthy subjects.
- Such a disease can be selected from cancers, disorders of sperm motility, ischemia, head trauma or pancreatitis.
- cancer is meant for example leukemia, breast cancer or lung cancer.
- “Sperm motility disorders” means disorders affecting the rate at which sperm can move and pass through the woman's cervix, uterus and fallopian tubes.
- the present invention also relates to the use of a marker according to the invention for determining whether a subject is likely to respond to therapy inhibiting the activity of an isoenzyme of ALDH and / or directed against cancer stem cells.
- It also relates to a method for determining whether a subject is likely to respond to therapy inhibiting the activity of an isoenzyme of ALDH and / or directed against cancer stem cells comprising the use of a marker according to the invention .
- subject in the context of the present invention, a warm-blooded animal such as a mammal, animal or human, particularly a human being.
- the subject may be a healthy subject or a subject who is suffering from, or has the potential to be afflicted with, one or more diseases and / or conditions described within the scope of the present invention.
- therapy inhibit the activity of an isozyme of ALDH refers to a therapy that directly or indirectly target would be an isozyme of ALDH as such I'ALDHI, ALDH3, I ALDH9 or more isoenzymes ALDH.
- therapy directed against cancer stem cells refers to a therapy which would target cancer stem cells, one of the features is the high level of ALDH.
- the present invention also relates to a method for distinguishing cells expressing at least one isoenzyme from ALDH in a cell population, said method comprising:
- bringing into contact is meant in particular the incubation with at least one specific substrate according to the invention for a defined time ranging from a few minutes, for example 30 minutes to several hours, for example 4 hours or more, with the cell population.
- a “cell population” is as defined above.
- “At least one isozyme of ALDH” and “at least one specific substrate of the invention” are as defined above.
- the fluorescence measurement can be performed by any method known to the skilled person.
- an increased fluorescence with respect to the fluorescence of the cell population before said population is brought into contact with the specific substrate it is meant a florescence of the studied cell population that is greater than the fluorescence of this same cell population before that population. it has been brought into contact with the specific substrate according to the invention.
- said method may also include an additional step d) comprising distinguishing between cells expressing the at least two isoenzymes of the ALDH.
- This distinction can be achieved for example by observing different fluorescent colors depending on the detected isoenzyme.
- the method comprises bringing the cell population into contact with resorufin retinoate and 7-hydroxycoumarin octanoate
- the cells with increased red fluorescence will be identified as expressing ALDH1
- cells with increased blue fluorescence will be identified as expressing ALDH3.
- the present invention also relates to a kit for the uses mentioned in the context of the present invention, particularly for quantifying an isozyme of ALDH, particularly in a cell population, comprising at least one specific substrate according to the invention.
- the kit may be a kit for diagnosing a disease involving dysregulation of an isozyme of ALDH, wherein said disease is selected for example from: cancers, disorders of sperm motility ischemia, head trauma or pancreatitis; for determining whether a subject is likely to respond to therapy inhibit the activity of an isoenzyme of ALDH and / or directed against cancer stem cells; to distinguish healthy stem cells from cancer stem cells, for example to distinguish between stem cells from solid cancers and / or hematological malignancies; or to characterize the different stages of cancer or the different stages of stem cell differentiation.
- a disease involving dysregulation of an isozyme of ALDH wherein said disease is selected for example from: cancers, disorders of sperm motility ischemia, head trauma or pancreatitis; for determining whether a subject is likely to respond to therapy inhibit the activity of an isoenzyme of ALDH and / or directed against cancer stem cells; to distinguish healthy stem cells from cancer stem cells, for example to distinguish between stem cells from solid cancer
- kits of the invention may for example further comprise instructions for use of said kit for determining the amount of isoenzyme ALDH, particularly in a cell population, for the diagnosis of a disease involving deregulation an ALDH isoenzyme, for determining whether a subject is likely to respond to therapy inhibit the activity of an isoenzyme of ALDH and / or directed against cancer stem cells, to distinguish healthy stem cells cancer stem cells, or to characterize the different stages of cancer or the various stages of differentiation of stem cells.
- kits may be provided in the form of a solid (for example freeze-dried) or in liquid form.
- Kits of the present invention may optionally include different containers (eg, ampule, test tube, vial or bottle) for each compound. Each compound will usually be aliquoted in its container or provided in a concentrated form. Other suitable containers for carrying out certain steps of the methods described in the context of the present invention may also be provided.
- containers eg, ampule, test tube, vial or bottle
- Figure 1 Plot of ichaelis- enten to determine the K m and V max of resorufine propionate on ALDH1A1, ALDH2 and ALDH3A1.
- Figure 2 Assay of ALDH activity 1 by resorufin propionate after treatment with interfering RNA ALDH1A1.
- Figure 3 Assay of ALDH1 activity by resorufin propionate after treatment with inhibitors of ALDH 1 and 3.
- Figure 4 Activity ALDH1 detected by flow cytometry via resorufin propionate.
- Figure 5 Determination of activity by the ALDH1 retinoate resorufin and fluorescein di-retinoate and ALDH3 by benzoate resorufin and fluorescein di- benzoate after treatment with retinoic acid.
- Figure 6 Assay of ALDH1 activity by resorufin retinoate and fluorescein di-retinoate and ALDH3 by resorufin benzoate and fluorescein dibenzoate after Disulfiram (DSF) treatment.
- the spray gas flow was at 0.4 bar and the capillary voltage at 3500v.
- the solutions were perfused at 10 ⁇ l / min in a solvent mixture (methanol / dichloromethane / water 45/40/15) with 1% formic acid.
- the mass range of the assay was 50-1000m-z and the calibration was performed with sodium formate.
- the compounds were prepared from resorufin (sodium salt) (Sigma) with the corresponding acid chloride (2 equivalents) in dichloromethane (0.05M) in the presence of DI PEA (diisopropylethylamine, 2 equivalents) .
- the compound was prepared in the same manner as the previous ester using commercial retinoic acid (yield. 40%).
- the crude (orange-red solid) obtained was washed with MeOH and purified by chromatography on silica gel (MeOH / DCM: 1/99). Further washing with EtOH followed by MeOH gave 100 mg (40%) of pure product.
- 2-Me-4-MeO tokyo-green (CAS No. 643755-84-4: 6-hydroxy-9- (4-methoxy-2-methylphenyl) -3H-Xanthen-3-one) was synthesized in two steps: a bis-silylation of 3.6- commercial dihydroxyxanth-9-one produced according to the procedure described in the article "J. Biol. ChemVol. 264, No. 14. Issue of May 15, PP. 8171-8178, 1989 "led to the 3,6-bis (tbutyldiméthylsilyloxy) xanthone.
- a second step carried out according to the procedure described in the article Chem. Eur. J. 2014, 20, 447. 455 "consisting of a treatment using magnesium from 2-Bromo-3-methoxytoluene followed by acid hydrolysis gave 2-Me-4-MeO tokyo green.
- the compound was prepared from 2.1 equivalents of retinoic acid, 2.1 equivalents of EDCI, 0.1 equivalent of 4-DMAP. Scale: 0.5 mmol, purification by chromatography on silica gel (PE / EtOAc: 80/20). Yellow solid, 45% yield. Mp 145-150 ° C (dec);
- esters were prepared in the same manner as previously from 7-hydroxycoumarin and acid chloride in the presence of DIPEA.
- NCI-H522 and A 549 lung cancer cells as well as leukemia lines were used.
- the cells were obtained from American Type Culture Collection (ATCC), the European Collection of Cell Cultures (ECACC) and Deutsche Sammlung von Mikroorganismen und Zellkultruren (DSMZ).
- ATCC American Type Culture Collection
- ECACC European Collection of Cell Cultures
- DSMZ Deutsche Sammlung von Mikroorganismen und Zellkultruren
- a range of resorufine propionate was made: 250, 200, 150, 125, 100, 90, 80 and 70 ⁇ and 0 ⁇ .
- 50 ⁇ solution of recombinant enzyme at 2.5 mU / well ALDH1 A1 (R & D Sytems, 5869-DH), ALDH2 (Abeam, ab87415) and ALDH3A1 (R & D Sytems, 6705-DH) was added. The incubation was carried out for 30 minutes at + 37 ° C.
- the HL-60 cells were inoculated at a concentration of 50,000 cells / well in RPMI-1640 medium without phenol red supplemented with L-Glutamine, Penicillin, Streptomycin and 10% Fetal Calf Serum ( SVF) supplemented with dimethyl ampalthiolester (DIMATE) a specific inhibitor ALDH1 and 3, morpholino ampal thiolester (MATE) a specific inhibitor of ALDH3, at concentrations of 8 ⁇ respectively.
- DIMATE dimethyl ampalthiolester
- MATE morpholino ampal thiolester
- the substrates of the different ALDHs respectively resorufine propionate for ALDH1 and resorufin 4-diethylaminobenzoate for ALDH 3 were added at a final concentration of 10 ⁇ and then incubated for one hour at +37 ° C.
- DSF Disulfiram
- the substrates of different ALDHs the retinoate respectively resorufin and fluorescein di- retinoate for I ALDH1 and benzoate and fluorescein di-benzoate fluorescein for ALDH 3 were added at a final concentration of 5 ⁇ then incubated for 30 minutes at +37 C.
- the HL-60 cells were inoculated at a concentration of 50,000 cells / well in RPMI-1640 medium without phenol red supplemented with L-Glutamine, Penicillin, Streptomycin and 10% Fetal Calf Serum ( SVF) supplemented with retinoic acid, known to be an inhibitor of ALDH activity at concentrations of 1 ⁇ and 10 ⁇ . The cells were then incubated for 72 hours.
- the substrates of different ALDHs the retinoate resorufin respectively and di-réetinoate fluorescein for I ALDH 1 and benzote fluorescein and di-benzote fluorescein for ALDH 3 were added at a final concentration of 5 ⁇ then incubated for 30 minutes at +37 ° C.
- the NCI-H522 cells were seeded at a concentration of 250,000 cells / plates, corresponding to a confluence of 40-50%, in RPMI-1640 medium supplemented with L-Glutamine, Penicillin, Streptomycin and 10% Fetal Calf Serum (FCS) on the night at + 37 C. The next day, the medium was replaced with the same medium without FBS.
- the transfection solution was then prepared by diluting 100 nM in 500 ⁇ l of culture medium without FCS, to which 500 ⁇ l of culture medium without FCS supplemented with 3 ⁇ l of lipofectamine 2000 (Invitrogen) was added. The solution was then incubated for 30 minutes at room temperature and then drops added to the cell solution.
- the mixture was incubated at +37 C in a 5% CO 2 incubator for 8 hours. After incubation, the medium was changed by medium supplemented with FCS and the cells were left in culture for 48 hours. The inhibition of the protein was validated by Western Blot. The specific activity of ALDH1A1 was then assayed by fluorescence.
- the cells were inoculated at a concentration of 1 ⁇ 10 4 cells / well in a 96-well plate in 100 ⁇ l in RPMI-1640 medium without phenol red supplemented with L-Glutamine, Penicillin, Streptomycin and 10% Fetal Calf Serum (FBS). supplemented with 10 ⁇ resorufine propionate.
- the NCI-H522 cells were added at a cell concentration of 50,000 cells / well and then incubated in RPMI-1640 medium supplemented with L-Glutamine, Penicillin, Streptomycin and 10% Fetal Calf Serum overnight at + 37C with 5% CO2. The next day, the culture medium was changed with either DIMATE (5 ⁇ ) or the treatment vehicle and incubated for 6 hours. The cells were incubated for 30 minutes with culture medium supplemented with 10 ⁇ l of resorufin propionate, were then washed with cold PBS and then fixed with paraformaldehyde for 15 minutes at 37 ° C.
- the cells were permeabilized and saturated with a PBS solution. ; 3% Bovine albumin; 0.3% Triton for 1 hour.
- the incubation was carried out with anti-ALDM antibody A1 (R & D System, MAB5869) 1 hour at 37 C, then with an anti-mouse antibody coupled to fluorescein for 1 hour at room temperature in the dark, with PBS washes between the two steps. 3 PBS washes were performed and microscopy glasses were mounted with support of antifading supplemented with DAPI. The cells were then observed under a microscope.
- 500,000 cells were incubated with RPMI-1640 medium supplemented with L-Glutamine, Penicillin, Streptomycin and 10% Fetal Calf Serum overnight at + 37C with 5% C02 atmosphere. .
- the cells were taken up in medium supplemented with 15 ⁇ l of dimethyl ampalthiolester (DIMATE) a specific inhibitor of ALDH1 and 3, then incubated for 5 hours at 37 C, 5% CO2. After trypsination, the cells were taken up in supplemented RPMI medium and centrifuged at 800g for 5 minutes.
- DIMATE dimethyl ampalthiolester
- the cell pellet was then taken up in fresh supplemented medium containing 10 ⁇ l of resorufin propionate and then incubated for 1 hour in a tube of polycarbonate at 37 ° C., 5% CO 2. After incubation, the cells were then centrifuged and then washed in cold PBSxl and finally taken up in 200 ml of cold PBSxl. The solution was then analyzed by flow cytometry (Ex 590nm / Em 560 nm or red laser).
- Figure 1 shows the data obtained to determine the K m and Vmax of resorufine propionate.
- FIG. 4 illustrates ALDH1 activity detected by flow cytometry via resorufin propionate.
- the untreated condition demonstrates the presence of living positive ALDH1 cells (Calcein-AM).
- Bone marrow (Mo) and blood (Sg) were obtained from 33 patients with their enlightened chords. The evaluations were performed on whole blood after lysis of red blood cells or bone marrow.
- the isolation of the blast cells was performed by a Navios flow cytometer (Beckman Coulter®) according to the phenotype of the latter indicated in Table 5 (CD34 +, CD1 17+ or CD45 weak).
- ALDH1 and ALDH3 activity was evaluated by incubating reagents: resorufin retinoate or resorufine octanoate at 5 pmol.L “1 and fluorescein di-retinoate or fluorescein dioctanoate at 0.8 pmol.L " 1 in blood after total lysis of the erythrocytes or in the extract bone marrow for 30 minutes at 37 C. the observed fluorescence is analyzed by cytometry to give a median fluorescence intensity value (MFI) corresponding to the relative activity of each isoform of ALDH blast cells.
- MFI median fluorescence intensity value
- Table 4 Patient parameters included in the study of the different activities of Aldehydes Dehydrogenases.
- AML Acute Leukemia Myeloide
- AREB Refractory Anemia with Excess Blasts
- Sg blood
- Mo bone marrow
- I FM value of the Median Fluorescence Intensity.
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| Application Number | Priority Date | Filing Date | Title |
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| FR1657324A FR3054564B1 (fr) | 2016-07-28 | 2016-07-28 | Substrat specifique d'une isoenzyme de l'aldh |
| PCT/EP2017/068985 WO2018019927A1 (fr) | 2016-07-28 | 2017-07-27 | Substrat spécifique d'une isoenzyme de l'aldh |
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| JP (1) | JP7050748B2 (fr) |
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| US3378463A (en) * | 1965-06-22 | 1968-04-16 | Army Usa | Method of measuring enzyme activity |
| WO1995000660A1 (fr) * | 1993-06-28 | 1995-01-05 | Chemunex | Procede d'evaluation de la vitalite des microorganismes |
| EP0989137A2 (fr) * | 1998-09-25 | 2000-03-29 | Tokyo Gas Co., Ltd. | Agents diagnostiques pour la fonction exocrine pancréatique |
| WO2009031708A1 (fr) * | 2007-09-05 | 2009-03-12 | Sumitomo Chemical Company, Limited | Composé de coumarine et utilisation correspondante |
| US20120237931A1 (en) * | 2011-03-14 | 2012-09-20 | Katz Ruth L | Identification and monitoring of circulating cancer stem cells |
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| CN1179108A (zh) * | 1995-02-02 | 1998-04-15 | 耐克麦德英梅金公司 | 基于光透射、反射的体内成像用造影剂 |
| DK1975243T3 (da) * | 1998-12-07 | 2010-06-28 | Univ Duke | BODIPY-aminoacetaldehyddiethylacetal |
| US20110105602A2 (en) | 2007-03-08 | 2011-05-05 | Daria Mochly-Rosen | Mitochondrial Aldehyde Dehydrogenase-2 Modulators and Methods of Use Thereof |
| US8354435B2 (en) * | 2008-09-08 | 2013-01-15 | The Board Of Trustees Of The Leland Stanford Junior University | Modulators of aldehyde dehydrogenase activity and methods of use thereof |
| GB0819280D0 (en) | 2008-10-21 | 2008-11-26 | Gen Electric | Imgaing and radiotherapy methods |
| CN102202669A (zh) | 2008-10-28 | 2011-09-28 | 利兰·斯坦福青年大学托管委员会 | 醛脱氢酶调节剂及其使用方法 |
| JP2011184303A (ja) | 2010-03-04 | 2011-09-22 | Univ Of Tsukuba | 骨再生促進剤の製造方法 |
| US9051597B2 (en) * | 2010-05-25 | 2015-06-09 | Mitsubishi Rayon Co., Ltd. | Fluorescent substrate for detection of enzymatic activity of nitrile-related enzyme |
| EP2958891B1 (fr) * | 2013-02-21 | 2020-06-17 | The Johns Hopkins University | Substrat d'aldéhyde déshydrogénase (aldh) fluorescent rouge |
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| US3378463A (en) * | 1965-06-22 | 1968-04-16 | Army Usa | Method of measuring enzyme activity |
| WO1995000660A1 (fr) * | 1993-06-28 | 1995-01-05 | Chemunex | Procede d'evaluation de la vitalite des microorganismes |
| EP0989137A2 (fr) * | 1998-09-25 | 2000-03-29 | Tokyo Gas Co., Ltd. | Agents diagnostiques pour la fonction exocrine pancréatique |
| WO2009031708A1 (fr) * | 2007-09-05 | 2009-03-12 | Sumitomo Chemical Company, Limited | Composé de coumarine et utilisation correspondante |
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| Publication number | Publication date |
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| US20190233871A1 (en) | 2019-08-01 |
| IL264481A (en) | 2019-02-28 |
| WO2018019927A1 (fr) | 2018-02-01 |
| IL264481B1 (en) | 2024-05-01 |
| CA3031587A1 (fr) | 2018-02-01 |
| US11519014B2 (en) | 2022-12-06 |
| JP2019525762A (ja) | 2019-09-12 |
| FR3054564B1 (fr) | 2018-08-31 |
| CN109715822A (zh) | 2019-05-03 |
| IL264481B2 (en) | 2024-09-01 |
| JP7050748B2 (ja) | 2022-04-08 |
| FR3054564A1 (fr) | 2018-02-02 |
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