WO2004099219A2 - Composes silanyl-n alcanal, leur procede de preparation et leurs utilisations - Google Patents
Composes silanyl-n alcanal, leur procede de preparation et leurs utilisations Download PDFInfo
- Publication number
- WO2004099219A2 WO2004099219A2 PCT/FR2004/001030 FR2004001030W WO2004099219A2 WO 2004099219 A2 WO2004099219 A2 WO 2004099219A2 FR 2004001030 W FR2004001030 W FR 2004001030W WO 2004099219 A2 WO2004099219 A2 WO 2004099219A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formula
- silanyl
- compound
- solid support
- compounds
- Prior art date
Links
- GDOPTJXRTPNYNR-UHFFFAOYSA-N CC1CCCC1 Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0896—Compounds with a Si-H linkage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54353—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals with ligand attached to the carrier via a chemical coupling agent
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54393—Improving reaction conditions or stability, e.g. by coating or irradiation of surface, by reduction of non-specific binding, by promotion of specific binding
Definitions
- the present invention relates to ⁇ -silanyl-n alkanals compounds, to their preparation process, to their use for the functionalization of solid supports, to the solid supports functionalized by these compounds, as well as to the use of solid supports as well functionalized for immobilization and / or synthesis of biological molecules of interest.
- the synthetic scheme for grafting oligonucleotide molecules onto a solid support presupposes the pretreatment of surfaces (generally oxides or metals) with a coupling agent with a functional termination which is organized on the surface of the material.
- SAMs Self-assembled monolayers
- Self-Assembled Monolayers are defined as an assembly of molecules in which the molecules are organized, organization due to interactions between the chains of the molecules, giving rise to a stable anisotropic film, monomolecular and ordered (A. ULMAN, Chem. Rev., 1996, 96, 1533-1554). These self-assembled monolayers, which can be obtained in a reproducible manner (J.B. BROZSKA et al.
- organosilicon compounds have therefore already been used as coupling agents for the functionalization of solid supports (LA CHRISEY et al., Nucleic Acids Research, 1996, 24, 15, 3031-3039, U. MASKOS et al, Nucleic Acids Research, 1992 , 20, 1, 1679-1684) for the purpose of immobilizing or in situ synthesizing oligonucleotides.
- the organosilicon coupling agents used in this work form inhomogeneous films and very little resistant to subsequent chemical treatments of synthesis or immobilization of oligonucleotides.
- the formation of films with these coupling agents is not reproducible.
- the properties of the silane coupling agent depend on the nature of the organic group R, but they mainly depend on the method of attachment to the surface by means of X functions.
- the polyfunctional silanes of RSiX 3 and R 2 type SiX that is to say comprising three or two bonding functions, not only cling to the surface of the solid support but can also react with one another to form a crosslinked layer.
- the monofunctional silanes of type R 3 SiX that is to say comprising only one hooking function, only hang individually on the substrate.
- organosilanes RSiX 3 and R 3 SiX have been the most studied in the literature, both from an academic and industrial point of view, the first because they lead to the formation of a three-dimensional network and the second because they allow know the number of silanol sites present on the surface.
- the functions generally studied are the Si-Ci, Si-OMe, Si-OEt bonds and a classic example of surface modification with a trichlorosilane is given in Scheme A below: step 1
- the inventors have in fact set themselves the aim of improving the fixing qualities of the surfaces currently used to effect the immobilization of biological molecules of interest and their resistance over time, by controlling the attachment functions and have developed new silane-type compounds meeting this objective.
- the present invention therefore relates to ⁇ -silanyl-n alkanals compounds, characterized in that they correspond to the following formula (I):
- n represents an integer between 7 and 20 inclusive and preferably between 1 1 and 18 inclusive.
- These compounds are characterized by the fact that they comprise a terminal aldehyde function allowing the direct grafting of any chemical or biological molecule comprising a terminal amine function unlike all the compounds of the silane type currently available which require either a modification step (of activation) of the terminal chemical function of the silane after the grafting step on the surface of a support, ie the presence of an intermediate molecule such as glutaraldehyde for example in order to allow grafting.
- an intermediate molecule such as glutaraldehyde for example in order to allow grafting.
- the synthesis of these compounds requires special conditions which are developed below and which allow the integrity of the aldehyde function to be preserved.
- the inventors have demonstrated that the compounds of formula (I) in accordance with the invention make it possible to functionalize the surface of solid supports comprising hydroxyl functions, and this in a single step, and lead to the formation of self-assembled monolayers whose density is maximum, unlike SAMs formed from organosilanes known from the prior art, for example the compounds of formula R- (CH 3 ) 2 Si-X generally used. Indeed, if we compare the steric hindrance of different silanes, the presence of hydrogen atoms bonded to silicon leads to the minimum possible space between two silane chains, as we can see in Diagram B ci - after:
- the subject of the invention is also the process for preparing the compounds of formula (I) as defined above, characterized in that:
- n is a number between 7 and 20 inclusive in solution in an alcoholic solvent, with ethyl orthoformate, at reflux and in the presence of a catalyst to obtain a compound of formula (III) below:
- the term "mild" reducing agent is understood to mean any reducing agent capable of reducing the ethoxy groups carried by the silicon atom, thereby reducing the methoxy groups present in the compound of formula (IV). It is the judicious choice of this particular reducing agent which allows the synthesis of the compounds of formula (I) which directly comprise a terminal aldehyde function.
- certain weakly reducing agents such as sodium borohydride are not capable of reducing the ethoxy groups carried by the compounds of formula (IV) while more strongly reducing agents such as lithium trihydroaluminate not only lead to reduction ethoxy groups but also to that of the methoxy groups of the compounds of formula (IV) thus prohibiting the subsequent formation of the aldehyde function during the fourth step.
- the intermediate compounds of formulas (II) to (V), and the final compound of formula (I) at the end of the synthesis are preferably washed, isolated and purified according to the methods conventionally used for this purpose. .
- the organic solvents used during the first step are preferably chosen from lower alcohols such as methanol and ethanol.
- the reaction is preferably carried out at the reflux temperature of the solvent and the duration of the reaction is generally between 8 and 16 hours.
- the catalyst used during the first step is preferably para-toluenesulfonic acid used in a catalytic amount, that is to say at about 0.5%.
- the catalyst used during the second step is preferably chosen from catalysts based on transition metal in homogeneous phase; Karstet's catalyst being particularly preferred.
- the anhydrous solvent is preferably chosen from ethers and cyclic oxides; ethyl ether being particularly preferred.
- the "mild" reducing agent is preferably lithium tetrahydroaluminate.
- the organic solvent used during the fourth is preferably chosen from chlorinated solvents; chloroform being particularly preferred.
- the oxidizing agent is preferably chosen from strong carboxylic or mineral acids; trifluoroacetic acid (TFA) being particularly preferred.
- TFA trifluoroacetic acid
- the compounds of formula (I) in accordance with the invention can be used to form a self-assembled monolayer organized on the surface of a solid support.
- the subject of the present invention is also the use of at least one compound of formula (I) as described above to form, on the surface of a solid support comprising hydroxyl functions, a self-assembled organized monolayer.
- SAMs can be carried out conventionally for a person skilled in the art by bringing at least one hydroxylated surface of a solid support into contact with a solution of at least one compound of formula (I) in accordance with l 'Invention in an organic solvent such as for example trichlorethylene at a temperature between 2 and 10 ° C for about 12 to 24 hours.
- organic solvent such as for example trichlorethylene
- the substrate is then rinsed with different solvents, preferably and successively with trichlorethylene, ethanol, chloroform, pentane, then dried, preferably with nitrogen.
- the surfaces thus obtained directly present a large number of aldehyde functions making it possible to covalently immobilize biological molecules of interest comprising a complementary amine function, without the need for prior activation of the support.
- the compounds grafted onto the support give rise to strong covalent bonds, of the siloxane type, with the surface and develop a strong cohesion between their alkyl chains, result of a self-assembly of the molecules which protects the siloxane bonds.
- the grafting is reproducible and the aldehyde function of the grafted compounds has a high chemical reactivity.
- the roughness of the surfaces, measured by atomic force microscopy (AFM), of the support treated by thermal oxidation and after covalent coupling of the compounds of formula (I) in accordance with the invention are respectively 0.8 ⁇ and 2.3 ⁇ , which indicates the deposition of a homogeneous layer.
- the thickness of the layer measured by ellipsometry after grafting an SAM with a compound of formula (I) in which n 11 is 19.9 ⁇ 2.6 ⁇ (for a refractive index equal to 1.45), while the theoretical value for a Cn carbon chain orthogonal to the surface is 18.15 ⁇ .
- the by-product of the grafting reaction of the compounds of formula (I) in accordance with the invention on the hydroxylated surface of a solid support is a release of hydrogen, easy to remove, unlike anionic entities or protic compounds which are inherent in the processes of the prior art using chlorosilanes or alkoxysilanes.
- the grafting reaction leads to the substitution of a single Si-H bond, that is to say that the compound of formula (I) in accordance with the invention behaves like a monofunctional organosilane.
- the activation of the Si-H bonds corresponds to the organization of the long alkyl chains in the vicinity of the surface, which can allow the transient formation of hypercoordinated species of silicon, of the type [R-SiH 4 ] " or [ R-SiH 5 ] 2 " , known to be more reactive than tetrahedral species.
- IR-RTA makes it possible to identify the presence on the surface of only RSiH -O- entities, showing that there was only monofixation.
- the present invention also relates to a solid support of which at least one surface is modified by an organized self-assembled monolayer, characterized in that said monolayer comprises a network of at least one compound of formula (I) as defined above.
- network is understood to mean an assembly of molecules in which the molecules are organized and in which the chains of the molecules interact with one another by non-covalent bonds (Van der Waals forces for example).
- All the solid supports comprising at least one hydrated surface can be functionalized with the compounds of formula (I) in accordance with the invention.
- said solid support is such that its surface has, before being modified, hydroxyl groups. It is advantageously selected from the group consisting of glasses, oxide type ceramics and plastics.
- said monolayer in addition to compounds of general formula (I) according to the present invention, can also comprise any other type of compound capable of being grafted onto the solid support (obtaining a so-called “mixed” monolayer) , which makes it possible to reduce the density of the compounds of formula (I) on the support, when such an effect is sought.
- the solid supports whose surface is modified by a self-assembled monolayer organized according to the present invention can advantageously be used, as supports for the synthesis or the covalent immobilization of biological or chemical molecules of interest comprising an amino function.
- biological or chemical molecules of interest comprising an amino function.
- nucleic acids such as DNA and oligonucleotides, proteins, cellular ligands, therapeutic target molecules and combinatorial chemistry ligands.
- the subject of the present invention is also the use of a solid support as described above for the synthesis or immobilization of molecules by covalent bond (formation of an amide bond).
- the present invention also relates to a process for synthesizing molecules on a solid support as described above, characterized in that said molecules consist of a series of repeating units and in that said process comprises successive steps for grafting said repeating units, the first grafting repeating unit carrying an amine function reactive with respect to the aldehyde functions of the compounds of formula (I) in accordance with the invention present on the solid support.
- the present invention further relates to a method of immobilizing biomolecules on a solid support as described above, characterized in that it comprises a step of grafting said biomolecules, which carry reactive amino functions vis- with respect to the aldehyde functions of the compounds of formula (I) in accordance with the invention, on said solid support.
- the subject of the invention is also the solid supports as described above on which biological molecules are immobilized or chemically covalently via an amide function (nucleic acid chips, protein chips, cell ligand chips, etc.).
- the invention also comprises other arrangements which will emerge from the description which follows, which refers to an example of preparation of a compound of formula (I) according to the invention, to an example for functionalizing the surface of a solid support using a compound of formula (I), to an example of the use of a support functionalized with a compound of formula (I) for the manufacture of a chip DNA, as well as in Figures 1 and 2 attached, in which: - Figure 1 shows the image of the fluorescence obtained on an epifluorescence microscope, after grafting of the 1 1 -silanyl-undecanal on the surface of a support silicon, an oligonucleotide (manually deposited) and hybridization with a complementary target;
- FIG. 2 shows the image of the fluorescence obtained on a scanner, after grafting of the 1 1 -silanyl-undecanal on the surface of a silicon support, of an oligonucleotide (deposited in the robot) and hybridization with a complementary target.
- the hydroxylation of a silicon substrate covered with a 5000 ⁇ thermal oxide layer is carried out in a 3.5 M sodium hydroxide solution for 2 hours.
- a solid support is obtained in accordance with the invention comprising a surface modified by a self-assembled monolayer formed from 1 1 -silanyl-undecanal.
- Example 2 the modified solid support prepared above is used in Example 2.
- oligonucleotides of the following sequence: 3 'ATG TCA CAT GCC AAA TAG 5' (SEQ ID No. 1) modified in position 5 'by an amine function are carried out on the modified solid support of the example 2, either manually at the rate of 1.5 ⁇ l, or using a piezoelectric ejection robot sold under the name Nano-Plotter® by the company GeSiM (Germany), at the rate of 300 ⁇ l.
- the oligonucleotide concentration of the solution used is 10 ⁇ M in a 0.3 M Na PO 4 buffer.
- the substrates are hybridized with a solution of complementary targets of the following sequence: 3 ′ TAG AGT GTA CGG TTT ATC 5 ′ of concentration 0.1 ⁇ M, marked with a fluorescent group Cy3.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04742596A EP1626977A2 (fr) | 2003-04-30 | 2004-04-28 | Composes silanyl-n alcanal, leur procede de preparation et leurs utilisations |
US10/554,742 US7442823B2 (en) | 2003-04-30 | 2004-04-28 | Silanyl-n-alkanal compounds, method for production and use thereof |
JP2006505821A JP4781261B2 (ja) | 2003-04-30 | 2004-04-28 | シラニル−n−アルカナール化合物、その製造方法及びその使用 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR03/05391 | 2003-04-30 | ||
FR0305391A FR2854400B1 (fr) | 2003-04-30 | 2003-04-30 | COMPOSES SILANYL-n ALCANAL, LEUR PROCEDE DE PREPARATION ET LEURS UTILISATIONS |
Publications (2)
Publication Number | Publication Date |
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WO2004099219A2 true WO2004099219A2 (fr) | 2004-11-18 |
WO2004099219A3 WO2004099219A3 (fr) | 2005-12-01 |
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PCT/FR2004/001030 WO2004099219A2 (fr) | 2003-04-30 | 2004-04-28 | Composes silanyl-n alcanal, leur procede de preparation et leurs utilisations |
Country Status (5)
Country | Link |
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US (1) | US7442823B2 (fr) |
EP (1) | EP1626977A2 (fr) |
JP (1) | JP4781261B2 (fr) |
FR (1) | FR2854400B1 (fr) |
WO (1) | WO2004099219A2 (fr) |
Families Citing this family (1)
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KR20110128933A (ko) * | 2009-03-18 | 2011-11-30 | 바스프 에스이 | 개질된 실리카 입자 및 이를 포함하는 방오성 중합체 조성물 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002051856A2 (fr) * | 2000-12-22 | 2002-07-04 | Commissariat A L'energie Atomique | Procede d'immobilisation de sondes, en particulier pour realiser des puces biologiques |
-
2003
- 2003-04-30 FR FR0305391A patent/FR2854400B1/fr not_active Expired - Fee Related
-
2004
- 2004-04-28 EP EP04742596A patent/EP1626977A2/fr not_active Withdrawn
- 2004-04-28 US US10/554,742 patent/US7442823B2/en not_active Expired - Fee Related
- 2004-04-28 JP JP2006505821A patent/JP4781261B2/ja not_active Expired - Fee Related
- 2004-04-28 WO PCT/FR2004/001030 patent/WO2004099219A2/fr active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002051856A2 (fr) * | 2000-12-22 | 2002-07-04 | Commissariat A L'energie Atomique | Procede d'immobilisation de sondes, en particulier pour realiser des puces biologiques |
Non-Patent Citations (3)
Title |
---|
CHRISEY L A ET AL: "Covalent attachment of synthetic DNA to self-assembled monolayer films" NUCLEIC ACIDS RESEARCH, OXFORD UNIVERSITY PRESS, SURREY, GB, vol. 24, no. 15, 1996, pages 3031-3039, XP002149193 ISSN: 0305-1048 cité dans la demande * |
DATABASE REGISTRY XP002273087 * |
MASKOS U ET AL: "OLIGNUCLEOTIDE HYBRIDISATIONS ON GLASS SUPPORTS: A NOVEL LINKER FOROLIGONUCLEOTIDE SYNTHESIS AND HYBRIDISATION PROPERTIES OF OLIGNUCLEOTIDES SYNTHESISED IN SITU" NUCLEIC ACIDS RESEARCH, OXFORD UNIVERSITY PRESS, SURREY, GB, vol. 20, no. 7, 1992, pages 1679-1684, XP000651031 ISSN: 0305-1048 cité dans la demande * |
Also Published As
Publication number | Publication date |
---|---|
EP1626977A2 (fr) | 2006-02-22 |
US20070032672A1 (en) | 2007-02-08 |
US7442823B2 (en) | 2008-10-28 |
WO2004099219A3 (fr) | 2005-12-01 |
JP2006525979A (ja) | 2006-11-16 |
FR2854400A1 (fr) | 2004-11-05 |
FR2854400B1 (fr) | 2007-04-20 |
JP4781261B2 (ja) | 2011-09-28 |
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