WO2004055857A2 - Verfahren zur herstellung eines probenträgers für die maldi-massenspektrometrie - Google Patents
Verfahren zur herstellung eines probenträgers für die maldi-massenspektrometrie Download PDFInfo
- Publication number
- WO2004055857A2 WO2004055857A2 PCT/EP2003/014230 EP0314230W WO2004055857A2 WO 2004055857 A2 WO2004055857 A2 WO 2004055857A2 EP 0314230 W EP0314230 W EP 0314230W WO 2004055857 A2 WO2004055857 A2 WO 2004055857A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- maldi matrix
- points
- maldi
- flat structure
- layer
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000004949 mass spectrometry Methods 0.000 title description 6
- 239000011159 matrix material Substances 0.000 claims abstract description 96
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000000816 matrix-assisted laser desorption--ionisation Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
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- 230000008022 sublimation Effects 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- AFVLVVWMAFSXCK-UHFFFAOYSA-N α-cyano-4-hydroxycinnamic acid Chemical compound OC(=O)C(C#N)=CC1=CC=C(O)C=C1 AFVLVVWMAFSXCK-UHFFFAOYSA-N 0.000 claims description 4
- 230000007774 longterm Effects 0.000 claims description 3
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 6
- 108090000765 processed proteins & peptides Proteins 0.000 description 6
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 102000004196 processed proteins & peptides Human genes 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- GETTZEONDQJALK-UHFFFAOYSA-N (trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=CC=C1 GETTZEONDQJALK-UHFFFAOYSA-N 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 150000001413 amino acids Chemical class 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- WXTMDXOMEHJXQO-UHFFFAOYSA-N 2,5-dihydroxybenzoic acid Chemical compound OC(=O)C1=CC(O)=CC=C1O WXTMDXOMEHJXQO-UHFFFAOYSA-N 0.000 description 2
- BRARRAHGNDUELT-UHFFFAOYSA-N 3-hydroxypicolinic acid Chemical compound OC(=O)C1=NC=CC=C1O BRARRAHGNDUELT-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 239000000055 Corticotropin-Releasing Hormone Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 102400001103 Neurotensin Human genes 0.000 description 2
- 101800001814 Neurotensin Proteins 0.000 description 2
- PVNIIMVLHYAWGP-UHFFFAOYSA-N Niacin Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical compound NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 description 2
- IDLFZVILOHSSID-OVLDLUHVSA-N corticotropin Chemical compound C([C@@H](C(=O)N[C@@H](CO)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1NC=NC=1)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](C(C)C)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CC=1C=CC(O)=CC=1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CC(N)=O)C(=O)NCC(=O)N[C@@H](C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(=O)N[C@@H](C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(O)=O)NC(=O)[C@@H](N)CO)C1=CC=C(O)C=C1 IDLFZVILOHSSID-OVLDLUHVSA-N 0.000 description 2
- 229960000258 corticotropin Drugs 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
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- PCJGZPGTCUMMOT-ISULXFBGSA-N neurotensin Chemical compound C([C@@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CC(C)C)C(O)=O)NC(=O)[C@H]1N(CCC1)C(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H]1N(CCC1)C(=O)[C@H](CCCCN)NC(=O)[C@H](CC(N)=O)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)[C@H](CC(C)C)NC(=O)[C@H]1NC(=O)CC1)C1=CC=C(O)C=C1 PCJGZPGTCUMMOT-ISULXFBGSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- SIOXPEMLGUPBBT-UHFFFAOYSA-N picolinic acid Chemical compound OC(=O)C1=CC=CC=N1 SIOXPEMLGUPBBT-UHFFFAOYSA-N 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- PCMORTLOPMLEFB-ONEGZZNKSA-N sinapic acid Chemical compound COC1=CC(\C=C\C(O)=O)=CC(OC)=C1O PCMORTLOPMLEFB-ONEGZZNKSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QAIPRVGONGVQAS-DUXPYHPUSA-N trans-caffeic acid Chemical compound OC(=O)\C=C\C1=CC=C(O)C(O)=C1 QAIPRVGONGVQAS-DUXPYHPUSA-N 0.000 description 2
- ACEAELOMUCBPJP-UHFFFAOYSA-N (E)-3,4,5-trihydroxycinnamic acid Natural products OC(=O)C=CC1=CC(O)=C(O)C(O)=C1 ACEAELOMUCBPJP-UHFFFAOYSA-N 0.000 description 1
- KSEBMYQBYZTDHS-HWKANZROSA-M (E)-Ferulic acid Natural products COC1=CC(\C=C\C([O-])=O)=CC=C1O KSEBMYQBYZTDHS-HWKANZROSA-M 0.000 description 1
- XIROXSOOOAZHLL-UHFFFAOYSA-N 2',3',4'-Trihydroxyacetophenone Chemical compound CC(=O)C1=CC=C(O)C(O)=C1O XIROXSOOOAZHLL-UHFFFAOYSA-N 0.000 description 1
- XLEYFDVVXLMULC-UHFFFAOYSA-N 2',4',6'-trihydroxyacetophenone Chemical compound CC(=O)C1=C(O)C=C(O)C=C1O XLEYFDVVXLMULC-UHFFFAOYSA-N 0.000 description 1
- OKOARRLHQZNSDP-RRKCRQDMSA-N 2-[(2r,4s,5r)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-methyl-3-sulfanylidene-1,2,4-triazin-5-one Chemical compound S=C1NC(=O)C(C)=NN1[C@@H]1O[C@H](CO)[C@@H](O)C1 OKOARRLHQZNSDP-RRKCRQDMSA-N 0.000 description 1
- UUWGERKZCVYLKW-UHFFFAOYSA-N 3-(2-cyano-4-hydroxyphenyl)prop-2-enoic acid Chemical compound OC(=O)C=CC1=CC=C(O)C=C1C#N UUWGERKZCVYLKW-UHFFFAOYSA-N 0.000 description 1
- AJHPGXZOIAYYDW-UHFFFAOYSA-N 3-(2-cyanophenyl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid Chemical compound CC(C)(C)OC(=O)NC(C(O)=O)CC1=CC=CC=C1C#N AJHPGXZOIAYYDW-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 101500024729 Homo sapiens Angiotensin-1 Proteins 0.000 description 1
- 101500024730 Homo sapiens Angiotensin-2 Proteins 0.000 description 1
- CZGUSIXMZVURDU-JZXHSEFVSA-N Ile(5)-angiotensin II Chemical compound C([C@@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CC=1NC=NC=1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CC=1C=CC=CC=1)C([O-])=O)NC(=O)[C@@H](NC(=O)[C@H](CCCNC(N)=[NH2+])NC(=O)[C@@H]([NH3+])CC([O-])=O)C(C)C)C1=CC=C(O)C=C1 CZGUSIXMZVURDU-JZXHSEFVSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 102000004142 Trypsin Human genes 0.000 description 1
- 108090000631 Trypsin Proteins 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- ORWYRWWVDCYOMK-HBZPZAIKSA-N angiotensin I Chemical compound C([C@@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CC=1NC=NC=1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC=1NC=NC=1)C(=O)N[C@@H](CC(C)C)C(O)=O)NC(=O)[C@@H](NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@@H](N)CC(O)=O)C(C)C)C1=CC=C(O)C=C1 ORWYRWWVDCYOMK-HBZPZAIKSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 235000004883 caffeic acid Nutrition 0.000 description 1
- 229940074360 caffeic acid Drugs 0.000 description 1
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- 239000012876 carrier material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001793 charged compounds Chemical class 0.000 description 1
- 238000013375 chromatographic separation Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- QAIPRVGONGVQAS-UHFFFAOYSA-N cis-caffeic acid Natural products OC(=O)C=CC1=CC=C(O)C(O)=C1 QAIPRVGONGVQAS-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- KSEBMYQBYZTDHS-HWKANZROSA-N ferulic acid Chemical compound COC1=CC(\C=C\C(O)=O)=CC=C1O KSEBMYQBYZTDHS-HWKANZROSA-N 0.000 description 1
- 235000001785 ferulic acid Nutrition 0.000 description 1
- 229940114124 ferulic acid Drugs 0.000 description 1
- KSEBMYQBYZTDHS-UHFFFAOYSA-N ferulic acid Natural products COC1=CC(C=CC(O)=O)=CC=C1O KSEBMYQBYZTDHS-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000001869 matrix assisted laser desorption--ionisation mass spectrum Methods 0.000 description 1
- 238000001906 matrix-assisted laser desorption--ionisation mass spectrometry Methods 0.000 description 1
- 238000001840 matrix-assisted laser desorption--ionisation time-of-flight mass spectrometry Methods 0.000 description 1
- CWWARWOPSKGELM-SARDKLJWSA-N methyl (2s)-2-[[(2s)-2-[[2-[[(2s)-2-[[(2s)-2-[[(2s)-5-amino-2-[[(2s)-5-amino-2-[[(2s)-1-[(2s)-6-amino-2-[[(2s)-1-[(2s)-2-amino-5-(diaminomethylideneamino)pentanoyl]pyrrolidine-2-carbonyl]amino]hexanoyl]pyrrolidine-2-carbonyl]amino]-5-oxopentanoyl]amino]-5 Chemical compound C([C@@H](C(=O)NCC(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCSC)C(=O)OC)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H]1N(CCC1)C(=O)[C@H](CCCCN)NC(=O)[C@H]1N(CCC1)C(=O)[C@@H](N)CCCN=C(N)N)C1=CC=CC=C1 CWWARWOPSKGELM-SARDKLJWSA-N 0.000 description 1
- -1 n-octyl- Chemical group 0.000 description 1
- 229960003512 nicotinic acid Drugs 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- XUZLXCQFXTZASF-UHFFFAOYSA-N nitro(phenyl)methanol Chemical compound [O-][N+](=O)C(O)C1=CC=CC=C1 XUZLXCQFXTZASF-UHFFFAOYSA-N 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 238000000879 optical micrograph Methods 0.000 description 1
- 229940081066 picolinic acid Drugs 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- PCMORTLOPMLEFB-UHFFFAOYSA-N sinapinic acid Natural products COC1=CC(C=CC(O)=O)=CC(OC)=C1O PCMORTLOPMLEFB-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 239000000541 tocopherol-rich extract Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- QURCVMIEKCOAJU-UHFFFAOYSA-N trans-isoferulic acid Natural products COC1=CC=C(C=CC(O)=O)C=C1O QURCVMIEKCOAJU-UHFFFAOYSA-N 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0409—Sample holders or containers
- H01J49/0418—Sample holders or containers for laser desorption, e.g. matrix-assisted laser desorption/ionisation [MALDI] plates or surface enhanced laser desorption/ionisation [SELDI] plates
Definitions
- the present invention relates to a method for producing a sample carrier with a large number of MALDI matrix points, a flat structure obtainable with the method according to the invention and a long-term stable flat structure.
- Mass spectrometry has become increasingly popular for the analysis of samples, for example in drug chemistry or in biological research and production.
- Mass spectrometry with ionization through matrix-assisted laser desorption and ionization (MALDI) is preferably used for the analysis of biomolecules in the samples.
- MALDI In the MALDI process, in particular biomolecules and / or biological material in the form of a drop of liquid are metered onto a so-called MALDI matrix point, for example pipetted, and dried.
- the crystals that form are examined, for example, with a MALDI-TOF mass spectrometer in linear or reflector mode.
- Nordhoff et. al. "MALDI-MS as a new method for the analysis of nucleic acid (DNA and RNA) with molecular masses up to 150,000 Dalton, Application of modern mass spectrometric methods to plant science research, Oxford University press, (1996) pages 86-101 which is hereby introduced as a reference and is therefore considered part of the disclosure.
- the MALDI matrix points are produced according to the prior art by applying the matrix substance as a solution in the form of a drop of liquid to a sample carrier and drying it there.
- this process is very complex despite automation techniques.
- the shape of the MALDI matrix points is not uniform and is not homogeneous in itself.
- the position of the matrix points on the sample carrier is relatively inaccurate. In order to prevent two neighboring points from running into one another, their spacing must be chosen to be correspondingly large. It is therefore an object of the invention to provide a method for producing a flat structure with a large number of MALDI matrix points which does not have the disadvantages of the prior art.
- the object is achieved according to the invention with a method for producing a flat structure, preferably a sample carrier, with a multiplicity of MALDI matrix points, in which the MALDI matrix points are applied to the sample carrier by precipitation of the MALDI matrix substance from the gas phase become.
- the MALDI matrix points can have any shape. They can be produced very reproducibly, are very homogeneous and have a surface structure with which very good mass spectra can be achieved.
- a flat structure in the sense of the invention is any shaped body with an arbitrarily designed surface.
- the fabric is preferably a plate with a flat surface, very particularly preferably a sample carrier, which, however, preferably has no indentations.
- the sheet according to the invention is most preferably a film.
- a MALDI matrix point in the sense of the invention essentially consists of at least one MALDI matrix substance familiar to the person skilled in the art. preferred
- MALDI matrix substances are 3-hydroxypicolinic acid, ⁇ - cyano-4-hydroxycinnamic acid, 2,5-dihydroxybenzoic acid, sinapic acid, 2,4,6-trihydroxyacetophenone nitrobenzyl alcohol, nicotinic acid, ferulic acid, caffeic acid, 2-aminobenzoic acid, picolinic acid, 3 -Aminobenzoic acid, 2,3,4-trihydroxyacetophenone, 6-aza-2-thiothymidine, urea, succinic acid, adipic acid, malonic acid or a mixture thereof.
- the MALDI matrix substance ⁇ - cyano-4-hydroxycinnamic acid is very particularly preferred.
- SY0036PCT A compound is preferably chosen as the MALDI matrix substance, which sublimes on the fabric and is visible to the human eye.
- the MALDI matrix points are generated by precipitation of the MALDI matrix substance from the gas phase.
- Precipitation from the gas phase in the sense of the invention is any process in which the MALDI matrix substance is transferred from the gas phase to the fabric. Condensation or sublimation may be mentioned as examples.
- the MALDI matrix points are preferably applied to the fabric by sublimation.
- Sublimation in the sense of the invention includes that the MALDI matrix substance is transferred as a solid into the gas phase and / or is deposited in a solid form from the gas phase on the fabric.
- Sublimation preferably takes place in a vacuum.
- the solid is particularly preferably heated for sublimation.
- MALDI matrix substances are particularly preferably used in parallel or sequentially.
- the MALDI matrix substances can be used to produce different MALDI matrix points.
- a MALDI matrix point it is also conceivable for a MALDI matrix point to have a substructure, for example partial points which are present separately from one another, each of which is composed of a different MALDI matrix substance.
- a substructure can also be, for example, concentric circular rings, which each consist of a different MALDI matrix substance.
- the sample carrier is preferably covered during the precipitation from the gas phase, particularly preferably sublimation, by a shaped body, a so-called mask, which has continuous recesses. It is only in the area of these recesses that the MALDI matrix substance is deposited on the fabric and forms a MALDI matrix point or partial point there.
- This mask can have any number of recesses, which can have any shape.
- the recesses can be round, rectangular, square, triangular or oval, to name just a small number of the possible shapes.
- the shape can be used to differentiate the respective MALDI matrix substances on a flat structure.
- the fabric can also be originally covered by several masks, which are then removed one after the other
- SY0036PCT 3 are used, for example, to apply different MALDI matrix substances to different areas of the fabric according to the invention.
- the mask has further recesses with which information can be transferred to the flat structure.
- the MALDI matrix substance is deposited on the fabric so that the information is visible there. Examples of information in the sense of the invention are the labeling of the rows and columns of a grid, abbreviations for the MALDI matrix substance used, but also adjustment points which allow an exact adjustment of the fabric in the corresponding analysis device.
- the MALDI matrix points preferably have an area of 1 ⁇ m 2 - 10 mm 2 .
- a drop of liquid can be deposited on such a surface and preferably anchored in such a way that it does not detach itself from the flat structure according to the invention when it hangs downwards.
- the MALDI matrix points are preferably arranged along an exact grid, which enables simple control of metering and / or analyzing machines.
- the MALDI matrix points can have any shape. Examples of possible shapes are rectangular, square, triangular or oval.
- the shape of the MALDI matrix points can be used to differentiate them, because the shape can be recognized, for example, under a microscope in the mass spectrometer during the analysis. For example, a specific form can be assigned to a specific MALDI matrix substance.
- a MALDI matrix point also preferably has a substructure. This substructure can consist of several sub-points which are isolated from one another and which preferably each consist of a different MALDI matrix substance. However, the substructure can also have several concentric circular rings.
- the embodiment with several partial points has the advantage that a single drop of a substance to be analyzed, which is brought into contact with the MALDI matrix point, simultaneously wets several partial points and thus examinations with several different matrixes at one MALDI matrix point - Substances can be carried out.
- the MALDI matrix points or partial points preferably represent regions which are better wettable than their surroundings and which are in each case completely surrounded by a region which is less wettable, preferably ultraphobic. This embodiment makes it possible to deposit a drop of liquid at a very specific location and anchor it there comparatively firmly.
- the crystalline structure of the MALDI matrix points or partial points preferably has a crystallite size of ⁇ 1 ⁇ m.
- This preferred embodiment of the present invention has the advantage, for example, that the MALDI matrix points are very well and uniformly dissolved by the substance to be tested and / or that a very good signal results.
- Ultraphobic in the sense of the invention means that the contact angle of a drop of water and / or oil lying on an ultraphobic surface is more than 150 ° , preferably more than 160 ° and most preferably more than 170 ° and / or the roll angle 10 ° does not exceed.
- the roll angle is understood to be the angle of inclination of a basically planar but structured surface against the horizontal, in which a standing water and / or oil drop with a volume of 10 ⁇ l is moved due to the force of gravity when the surface is inclined.
- ultraphobic surfaces are described, for example, in WO 98/23549, WO 96/04123, WO 96/21523, WO 00/39369, WO 00/39368, WO 00/39239, WO 00/39051, WO 00/38845 and WO 96 / 34697, which are hereby introduced as a reference and are therefore considered part of the disclosure.
- Such an ultraphobic surface is described in international patent application WO 99/10322, which is hereby introduced as a reference and is therefore considered part of the disclosure.
- the fabric is designed as a disposable item.
- a multilayer sheet with a first layer with an ultraphobic surface and a carrier layer is particularly suitable for this embodiment, the first layer being reversibly applied to the carrier layer and the maximum local deviation of the sheet from the flatness ⁇ 100 ⁇ m, particularly preferably ⁇ 20 ⁇ m over a length of 100 mm.
- This flat structure has the advantage that the first layer with the ultraphobic surface can be detached from the carrier layer after one or more uses and can be replaced by a new first layer, so that it is excluded that this first layer has been contaminated by previous experiments ,
- the first layer with the ultraphobic surface is particularly inexpensive to manufacture as a disposable item.
- the flatness defined according to the invention ensures that the flat structure can be used in all common mass spectrometric and / or optical analysis devices.
- the first layer is glued to the carrier layer.
- the fabric according to the invention can be used in a variety of ways, but is preferably suitable for mass spectroscopic and / or optical analyzes.
- SY0036PCT Another object of the present invention is a long-term stable sheet with at least one MALDI matrix point, characterized in that it is surrounded by a hollow body in which a vacuum prevails and which consists of a water vapor-impermeable material.
- the fabric is completely surrounded by a hollow body in which there is a vacuum, preferably a pressure ⁇ 100 mbar.
- the hollow body is made from a gas-impermeable, in particular water vapor-impermeable, material.
- the hollow body is preferably opaque.
- the hollow body is preferably made of a plastic film which is sealed on at least one side.
- the plastic film particularly preferably has a gas barrier layer, in particular a water vapor barrier layer. This barrier layer is preferably made of aluminum.
- the fabric according to the invention has the advantage that, in particular, the MALDI matrix points on the fabric are not subject to any or only a slight aging process over a period of at least several months.
- Figure 1 shows the cross section of a multi-layer fabric according to the invention.
- Figure 2 shows the surface of a fabric according to the invention.
- FIG. 3 shows a mask for carrying out the method for producing a flat structure according to the invention.
- FIG. 4 shows a MALDI matrix point obtainable with the method according to the invention.
- FIG. 5 shows the use of the fabric according to the invention in the coupling of liquid chromatography and MALDI examinations.
- a sample carrier was made as follows:
- a roll-polished aluminum sheet (99.9%) with an area of 26 ⁇ 76 mm 2 and a thickness of 0.15 mm was degreased at room temperature with chloroform (pa) for 20 seconds in aqueous NaOH (5 g / l) at 50 ° C.
- the mixture was then rinsed in distilled water for 30 s, then in NaHCO 3 (20 g / l) for 60 s at 40 ° C., then again in distilled water for 30 s and dried in a drying cabinet at 80 ° C. for 1 hour.
- the sheet treated in this way was coated with an approximately 50 nm thick gold layer by sputtering in a high vacuum. Finally, the sample was immersed in a closed vessel for 24 hours by immersion in a solution of the thiol CF 3 - (CF 2 ) 7 - (CH 2 ) 2 -SH in benzotrifluoride (pa, 1 g / l) at room temperature
- the surface For water, the surface has a static contact angle of 178 °. If the surface is inclined by ⁇ 2 °, a water drop with a volume of 10 ⁇ l rolls off.
- a high vacuum evaporation plant (Edwards E306)
- 0.5 g of ⁇ -cyano-4-hydroxycinnamic acid is placed in a heatable quartz crucible with an upward opening of 10 mm in diameter.
- a sample holder which is covered with a mask according to FIG. 3, is mounted at a distance of 150 mm.
- the quartz crucible is heated with the help of external windings made of tungsten wire.
- the temperature of the solid is regulated in the powder bed with a thermocouple at 180 ° C.
- the layer thickness of the deposited film of o-cyano-4-hydroxycinnamic acid is determined with the aid of a quartz crystal thickness gauge, which is previously calibrated with an absolute layer thickness determination (e.g. atomic force microscope).
- the sublimation is broken off at a layer thickness of 1 ⁇ m.
- the MALDI matrix points obtained are shown by way of example in FIG. 4.
- a mass spectrum of this MALDI matrix point was obtained as follows:
- the peptides were prepared for mass spectrometric analysis as follows: 0.5 ⁇ l of an aqueous solution, each 5 fmol of peptides 1-6, 1 fmol of peptide 7 and a volume percent of trifluoroacetic acid and 1 mM of the nonionic detergent n-octyl-ß-D- contained glucopyranoside were pipetted onto the MALDI matrix point. After the solvent completely SY0036PCT 9 had evaporated, the sample thus prepared was washed once. For this purpose, the entire sample holder was exchanged for a 0.1% trifluoroacetic acid for 2 seconds and immediately thereafter, for the removal of remaining liquid residues, held in a nitrogen gas stream (2.5 bar) for 10 seconds.
- the mass spectrum of positive molecular ions was recorded in a MALDI time-of-flight mass spectrometer from Bruker Daltonik, Bremen (Scout-MTP Autoflex) in reflector operating mode and with time-delayed ion extraction (delay time: 70 nanoseconds) and 20 kV acceleration voltage. To improve the signal-to-noise ratio, 100 single-shot spectra were added up.
- FIG. 1 shows the fabric 1 that consists of a first layer 2 with an ultraphobic surface 3 and a carrier layer 4.
- the first layer 2 is fixed on the carrier layer by means of an adhesive layer 5.
- the person skilled in the art recognizes that the adhesive layer 5 does not necessarily have to be present.
- the adhesive layer 5 consists of an electrically conductive material, so that there is an electrical contact between the first layer 2 and the carrier material.
- FIG. 2 shows a flat structure according to the invention, onto which several MALDI matrix points 6 have been sublimed in a grid-like manner.
- the MALDI matrix points in the respective rows 1-4 have different shapes which symbolize the user that different MALDI-Marix substances were used in each row.
- the MALDI matrix point 2D is shown enlarged so that it can be seen that it consists of four partial points 8. These sub-points 8 are each made up of different MALDI matrix substances, so that four different analyzes can be carried out at this MALDI matrix point.
- an inscription 7 has additionally been applied to the flat structure, which informs the user of the MALDI matrix substance used in this row.
- the fabric has two centering crosses 9.
- the inscription and the centering crosses are sublimed like the MALDI matrix points on the fabric by placing a mask over the fabric that has corresponding recesses.
- the person skilled in the art recognizes that the rows 1-4 of the grid were produced one after the other.
- Figure 3 shows the mask with 8 x 8 openings 12 with a diameter of 0.8 mm with a distance of the center points of 2.25 mm (not to scale).
- FIG. 4 shows an optical micrograph of a matrix spot obtained with the mask from FIG. 3.
- FIG. 5 shows the very advantageous use of the sample carrier according to the invention in the coupling of liquid chromatography and MALDI examination (LC-MALDI coupling).
- SY0036PCT 11 Mixtures of substances are often first separated chromatographically before a MALDI examination. Examples are mixtures of peptides that have been generated by enzymatic (eg trypsin) peptide degradation. After the chromatographic separation, the fractions of the eluate are then applied to the MALDI matrix points 6 of the sample holder 1.
- enzymatic eg trypsin
- MALDI matrix points 6 are used for this, which are very close to each other, but are still completely enclosed by an ultraphobic area.
- the distances (measured from center to center) of the MALDI matrix points are 1.5 times their diameter.
- MALDI matrix points which were created by sublimation via masks, their location and size are very precisely defined. In this way it can be achieved that the liquid can run out of the opening 11 of the LC column 10 for application to the MALDI matrix points continuously. A separate collection of the fractions in vessels with subsequent pipetting onto the matrix points or a discontinuous generation of fractions by lingering the outlet opening over a MALDI matrix point and then quickly moving on to the next MALDI matrix point is omitted.
- the sample carrier 1 is moved at a constant speed under the outlet opening 11.
- Each MALDI matrix point now captures a constant volume of the liquid that is dispensed from the outlet opening.
- the process is started at point A and meanders across all points to point E.
- the MALDI matrix points then contain the entire eluate of the chromatography on the MALDI matrix points A to E in fractions that correspond to the constant volume, that every MALDI matrix point takes up. This volume can be changed by changing the speed at which the carrier 1 is displaced under the entrance opening 11.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004560406A JP2006514738A (ja) | 2002-12-13 | 2003-12-15 | Maldi質量分光測定用サンプル担体の製造方法 |
EP03795893.1A EP1573776B1 (de) | 2002-12-13 | 2003-12-15 | Verfahren zur herstellung eines probenträgers für die maldi-massenspektrometrie |
US10/525,453 US20060121599A1 (en) | 2002-12-13 | 2003-12-15 | Method for producing a sample carrier for maldi-mass spectrometry |
AU2003298183A AU2003298183A1 (en) | 2002-12-13 | 2003-12-15 | Method for producing a sample carrier for maldi-mass spectrometry |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10258674A DE10258674A1 (de) | 2002-12-13 | 2002-12-13 | Verfahren zur Herstellung eines Probenträgers für die MALDI-Massenspektrometrie |
DE10258674.8 | 2002-12-13 |
Publications (2)
Publication Number | Publication Date |
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WO2004055857A2 true WO2004055857A2 (de) | 2004-07-01 |
WO2004055857A3 WO2004055857A3 (de) | 2005-12-22 |
Family
ID=32336361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2003/014230 WO2004055857A2 (de) | 2002-12-13 | 2003-12-15 | Verfahren zur herstellung eines probenträgers für die maldi-massenspektrometrie |
Country Status (6)
Country | Link |
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US (1) | US20060121599A1 (de) |
EP (1) | EP1573776B1 (de) |
JP (1) | JP2006514738A (de) |
AU (1) | AU2003298183A1 (de) |
DE (1) | DE10258674A1 (de) |
WO (1) | WO2004055857A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010017995A1 (en) * | 2008-08-15 | 2010-02-18 | Qiagen Gmbh | Method for analysing a complex sample by mass spectrometry |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005022823A1 (de) * | 2005-05-02 | 2006-11-09 | Qiagen Gmbh | Bioprobenträger für massenspektroskopische Analysen |
JP5020742B2 (ja) * | 2007-08-27 | 2012-09-05 | 日本電子株式会社 | Maldiイオン源を備えた質量分析装置およびmaldiイオン源用サンプルプレート |
EP2318819A2 (de) * | 2008-07-30 | 2011-05-11 | The Brigham and Women's Hospital, Inc. | Herstellung von testplatten für matrixunterstützte laserdesorption/ionisierung |
CN102472755A (zh) * | 2009-07-09 | 2012-05-23 | 皇家飞利浦电子股份有限公司 | 用于分子的激光解吸离子化质谱的表面涂层 |
WO2011027819A1 (ja) * | 2009-09-02 | 2011-03-10 | 公益財団法人野口研究所 | 質量分析法 |
JP5359924B2 (ja) * | 2010-02-18 | 2013-12-04 | 株式会社島津製作所 | 質量分析装置 |
US9211542B2 (en) * | 2010-05-21 | 2015-12-15 | Eidgenossische Technische Hochschule Zurich | High-density sample support plate for automated sample aliquoting |
WO2014162557A1 (ja) * | 2013-04-04 | 2014-10-09 | 株式会社島津製作所 | Maldi用試料調製方法及び試料調製装置 |
DE102015003440A1 (de) * | 2015-03-16 | 2016-09-22 | Friedrich-Schiller-Universität Jena | Verfahren zur MALDI-MSI Analytik von Objekten, insbesondere biologischen Gewebeproben, und Target zur Analytik sowie dessen Herstellung |
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US5854486A (en) * | 1996-12-27 | 1998-12-29 | R. T. Hodgson | Method and apparatus for MALDI mass spectrometry |
WO1998059360A1 (en) * | 1997-06-20 | 1998-12-30 | Ciphergen Biosystems, Inc. | Retentate chromatography and protein chip arrays with applications in biology and medicine |
WO2000067293A1 (en) * | 1999-04-29 | 2000-11-09 | Ciphergen Biosystems, Inc. | Sample holder with hydrophobic coating for gas phase mass spectrometers |
Family Cites Families (7)
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GB9518429D0 (en) * | 1995-09-08 | 1995-11-08 | Pharmacia Biosensor | A rapid method for providing kinetic and structural data in molecular interaction analysis |
DE19754978C2 (de) * | 1997-12-11 | 2000-07-13 | Bruker Daltonik Gmbh | Probenträger für die MALDI-Massenspektrometrie nebst Verfahren zur Herstellung der Platten und zum Aufbringen der Proben |
DE19834070B4 (de) * | 1998-07-29 | 2007-02-15 | Bruker Daltonik Gmbh | Ionisierung hochmolekularer Substanzen durch Laserdesorption aus flüssigen Matrices |
NZ512428A (en) * | 1998-12-24 | 2004-02-27 | Sunyx Surface Nanotechnologies | Ultraphobic surface |
DE19923761C1 (de) * | 1999-05-21 | 2001-02-08 | Bruker Daltonik Gmbh | Aufreinigende Probenträger für die MALDI-Massenspektrometrie |
DE10005600A1 (de) * | 2000-02-09 | 2001-08-16 | Bayer Ag | Ultraphobes Flächengebilde mit einer Vielzahl von hydrophilen Bereichen |
DE10043042C2 (de) * | 2000-09-01 | 2003-04-17 | Bruker Daltonik Gmbh | Verfahren zum Belegen eines Probenträgers mit Biomolekülen für die massenspektrometrische Analyse |
-
2002
- 2002-12-13 DE DE10258674A patent/DE10258674A1/de not_active Withdrawn
-
2003
- 2003-12-15 AU AU2003298183A patent/AU2003298183A1/en not_active Abandoned
- 2003-12-15 US US10/525,453 patent/US20060121599A1/en not_active Abandoned
- 2003-12-15 WO PCT/EP2003/014230 patent/WO2004055857A2/de active Application Filing
- 2003-12-15 EP EP03795893.1A patent/EP1573776B1/de not_active Expired - Lifetime
- 2003-12-15 JP JP2004560406A patent/JP2006514738A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5854486A (en) * | 1996-12-27 | 1998-12-29 | R. T. Hodgson | Method and apparatus for MALDI mass spectrometry |
WO1998059360A1 (en) * | 1997-06-20 | 1998-12-30 | Ciphergen Biosystems, Inc. | Retentate chromatography and protein chip arrays with applications in biology and medicine |
WO2000067293A1 (en) * | 1999-04-29 | 2000-11-09 | Ciphergen Biosystems, Inc. | Sample holder with hydrophobic coating for gas phase mass spectrometers |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010017995A1 (en) * | 2008-08-15 | 2010-02-18 | Qiagen Gmbh | Method for analysing a complex sample by mass spectrometry |
EP2157432A1 (de) * | 2008-08-15 | 2010-02-24 | Qiagen GmbH | Verfahren zur Analyse einer komplexen Probe durch Massenspektrometrie |
US8460940B2 (en) | 2008-08-15 | 2013-06-11 | Qiagen Gmbh | Method for analysing a complex sample by mass spectrometry |
Also Published As
Publication number | Publication date |
---|---|
EP1573776A2 (de) | 2005-09-14 |
JP2006514738A (ja) | 2006-05-11 |
AU2003298183A1 (en) | 2004-07-09 |
WO2004055857A3 (de) | 2005-12-22 |
EP1573776B1 (de) | 2017-12-06 |
US20060121599A1 (en) | 2006-06-08 |
DE10258674A1 (de) | 2004-06-24 |
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