EP2279415A1 - Verfahren zum sensitiven nachweis von polyaminosäuren und anderen makromolekülen - Google Patents
Verfahren zum sensitiven nachweis von polyaminosäuren und anderen makromolekülenInfo
- Publication number
- EP2279415A1 EP2279415A1 EP09706301A EP09706301A EP2279415A1 EP 2279415 A1 EP2279415 A1 EP 2279415A1 EP 09706301 A EP09706301 A EP 09706301A EP 09706301 A EP09706301 A EP 09706301A EP 2279415 A1 EP2279415 A1 EP 2279415A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- iii
- analyte
- rna
- mixture
- acid
- 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.)
- Ceased
Links
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Classifications
-
- 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
- G01N33/531—Production of immunochemical test materials
- G01N33/532—Production of labelled immunochemicals
- G01N33/533—Production of labelled immunochemicals with fluorescent label
-
- 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
- G01N33/58—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances
- G01N33/582—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances with fluorescent label
-
- 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
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6803—General methods of protein analysis not limited to specific proteins or families of proteins
- G01N33/6827—Total protein determination, e.g. albumin in urine
- G01N33/683—Total protein determination, e.g. albumin in urine involving metal ions
Definitions
- the invention relates to a method for detecting an analyte, which preferably contains polyamino acids or other macromolecules, by luminescence labeling in gels and on solid supports using lanthanide ions, such as. Europium (III), terbium (III), ammonium (III), neodymium (III) or dysprosium (III) complexes.
- lanthanide ions such as. Europium (III), terbium (III), ammonium (III), neodymium (III) or dysprosium (III) complexes.
- polyamino acids The detection and analysis of polyamino acids are important in various commercial and scientific applications.
- polyamino acid any homopolymer or heteropolymer of amino acids including peptides, proteins and nucleic acids is considered.
- Polyamino acids are typically detected and characterized by gel electrophoresis, solution quantification assays or by detection on solid supports such as filter membranes.
- filter membranes are nitrocellulose membranes or polyvinylidene difluoride (PVDF) membranes.
- PVDF polyvinylidene difluoride
- CBB staining Coomassie Brilliant Blue staining
- silver staining is about 100 to 1000 times more sensitive than CBB staining, but both share some drawbacks.
- CBB staining and silver staining are both relatively insensitive staining and have only a narrow range of linear quantifiability for densitometric evaluation.
- the labeled gels can not be blotted for further analysis.
- both CBB staining and silver staining require colorimetric detection procedures, ie, proteins are detected by the presence of labeled or opaque bands in the electrophoresis gel.
- luminescent reagents to detect proteins offers the potential for greatly increased sensitivity and a larger linear quantification range, while at the same time increasing the ease of application of the labeling reagent.
- luminescent is meant any reagent that luminesces, ie, phosphorescents, fluoresces, chemiluminesces, or electroluminesces.
- Fluorescent reagents have already been used to label polyamino acids, such as the dye Nilrot (9-diethylamino-5H-benzo (alpha) phenoxazin-5-one) (see Daban et al, Anal )). Further examples of frequently used fluorescent reagents belong to the family of cyanine dyes (also called Cy dyes) (see Ernst LA, Gupta RK, Mujmdar RB, Wagoner AS, Cyanine dye labeling reagents for sulfhydryl groups, Cytometry 1989, 10 (1): 3-10). Cyanine dyes have been used, inter alia, as fluorescent dyes for polyamino acids in gels, on membranes or other supports.
- organic fluorescent dyes typically suffer from the disadvantage of high background staining on solid supports and gels and rapid fading upon illumination.
- the linear ranges of the dyes described above extend over three to four orders of magnitude as described in the publications cited.
- the polyamino acid concentrations in a biological sample may extend up to 10 orders of magnitude (Seilers TA and Yates JR Review of Proteomics with Applications to Genetic Epidemiology, Genet Epidemiol 24: 83-98, 2003). It is therefore understood that a marking method that has a linear range of more than four orders of magnitude is desirable.
- polyamino common detection method for example, 2D-gels, native and non-native 1-D gels 1 include isoelectric focusing, dot blots, slot blots, differential gel electrophoresis, chromatographic separation techniques, capillary electrophoresis, and others.
- the difficulties with these techniques lie in the detection of small amounts of protein, due to limitations in the dynamic range of the detection methods, and in the identification of an individual polyamino acid in a complex mixture.
- Biomedical specimens that are typically analyzed include, for example, body fluids such as plasma, serum, corticospinal fluid, blood and others as well as tissue specimens of various types.
- the object of the invention is to specify a method for specifically detecting individual polyamino acids or groups of polyamino acids and nucleic acids. It should be examined to what extent a luminescent marker containing complexed lanthanide ions can be coupled to other polyamino acids which specifically recognize the polyamino acids to be detected (for example antibodies) and to what extent a luminescence marker can be coupled directly to the polyamino acids to be detected.
- the decisive factor is the use of individual selected lanthanide complexes as luminescence markers (hereinafter referred to as LM).
- the LMs consist of a light-trapping unit (antenna), a chelate-forming skeleton, a functionality for coupling to polyamino acids, and a lanthanoid central portion (hereinafter referred to as Ln (III)).
- Ln lanthanoid central portion
- This compound is preferably used and referred to as LM 1.
- the type of target polyamino acid is controlled by the coupling functionality.
- maleimide is mainly used as the covalent sulfhydryl coupling reagent, because in this case the charge of the labeled polyamino acid does not change.
- Essential to the invention is the measurement of the labeled polyamino acids using time-resolved luminescence spectroscopic methods.
- the invention relates to the phosphorescence emission of polyamino acids in gels and on solid supports using LM, which contain europium (III), terbium (III), samarium (III), neodymium (III) or dysprosium (III) as central ions.
- LM which contain europium (III), terbium (III), samarium (III), neodymium (III) or dysprosium (III) as central ions.
- An essential aspect of the invention is a novel polyamino acid detection technique which differs in handling from the conventional labeling technique in that LM is covalently bound to the analyte.
- the LM is covalently linked to polyamino acids.
- Another aspect of the invention is the use of europium (III), terbium (III), samarium (III), neodymium (III) or dysprosium (III) central ions to label polyamino acids by time-delayed detection with significantly higher sensitivity as customary, today known dyeing process for polyamino acids with at the same time a larger linear signal to concentration ratio and higher light stability.
- the present invention utilizes the LMs described above to label an analyte, followed by detection of the binding of the LM to the analyte and optionally its quantification or other analysis.
- the analyte is typically a biomolecule.
- the analyte is a polyamino acid.
- the analyte is a biomolecule. In another embodiment, the analyte is a polyamino acid. In another embodiment, the analyte is a polyamino acid having post-translational modifications. Posttranslational modifications are defined as chemical modifications of a polyamino acid after its naturally occurring translation process.
- the solution according to the invention is realized with a test kit which is composed as described below.
- the detection limit is 0.5 ⁇ g per spot (bovine serum albumin).
- the linear range extends over 6 orders of magnitude.
- the advantages of the detection method are obvious, especially in the case of using membranes.
- the simultaneous detection of all proteins on a membrane and individual proteins by means of antibodies with comparable sensitivity is possible. This could not be achieved with the previously known dyeing techniques.
- the protein recognized by the antibody can now be quantified relative to the particular band.
- statements about foreign proteins in the band or post-translational modifications can be quantified.
- Further advantages are the wide linear signal to concentration range over six orders of magnitude and in the high light stability. Legends to the pictures
- BSA bovine serum albumin
- a + 1: 67231 Da corresponds to (A) + the LM-mass -31 Da
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
- Urology & Nephrology (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Cell Biology (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Biophysics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008006610A DE102008006610A1 (de) | 2008-01-29 | 2008-01-29 | Verfahren zum sensitiven Nachweis von Polyaminosäuren und anderen Makromolekülen |
| PCT/EP2009/000447 WO2009095189A1 (de) | 2008-01-29 | 2009-01-24 | Verfahren zum sensitiven nachweis von polyaminosäuren und anderen makromolekülen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2279415A1 true EP2279415A1 (de) | 2011-02-02 |
Family
ID=40506476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09706301A Ceased EP2279415A1 (de) | 2008-01-29 | 2009-01-24 | Verfahren zum sensitiven nachweis von polyaminosäuren und anderen makromolekülen |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20110111388A1 (de) |
| EP (1) | EP2279415A1 (de) |
| DE (1) | DE102008006610A1 (de) |
| WO (1) | WO2009095189A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2730574A1 (de) * | 2012-11-08 | 2014-05-14 | Universität Leipzig | Phosphoreszierender Farbstoff und Phosphoreszenz-Immunoassay durch Peptidverlagerung |
| PL3071969T3 (pl) | 2013-11-19 | 2018-09-28 | Kemira Oyj | Sposób analizy |
| CA3113136A1 (en) * | 2018-10-01 | 2020-04-09 | Kemira Oyj | A method for determining hydrolysis degree and charge density of polyelectrolytes and phosphonates |
| FI129535B (en) * | 2018-10-01 | 2022-04-14 | Kemira Oyj | METHOD OF MEASURING THE CONCENTRATION OF POLYELECTROLYTIC AND PHOSPHONATE MIXTURES |
| WO2021119583A2 (en) * | 2019-12-13 | 2021-06-17 | University Of Pittsburgh - Of The Commonwealth System Of Higher Education | Lanthanide compounds for luminescence "turn-on" detection |
| CA3210335A1 (en) * | 2021-03-01 | 2022-09-09 | The Research Foundation For The State University Of New York | Dual-layer detector system and method for spectral imaging and contrast enhanced digital breast tomosynthesis |
| CN115356320B (zh) * | 2022-10-20 | 2023-01-17 | 上海诚益生物科技有限公司 | 基于均相时间分辨荧光技术的体外rig-i激活检测的方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6476696A (en) * | 1995-06-07 | 1996-12-30 | Igen, Inc. | Simultaneous assay method using lanthanide chelates as the l uminophore for multiple labels |
| WO2003003063A2 (en) * | 2001-06-28 | 2003-01-09 | Ia, Inc. | Fiber-optic sensor array |
| US20050064485A1 (en) * | 2003-09-12 | 2005-03-24 | Kurt Vogel | Multiplex binding and activity assays |
| DE102004022628A1 (de) * | 2004-05-07 | 2005-12-15 | Sensient Imaging Technologies Gmbh | FRET-Bioassay |
-
2008
- 2008-01-29 DE DE102008006610A patent/DE102008006610A1/de not_active Withdrawn
-
2009
- 2009-01-24 EP EP09706301A patent/EP2279415A1/de not_active Ceased
- 2009-01-24 WO PCT/EP2009/000447 patent/WO2009095189A1/de not_active Ceased
- 2009-01-24 US US12/735,603 patent/US20110111388A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009095189A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008006610A1 (de) | 2009-07-30 |
| WO2009095189A1 (de) | 2009-08-06 |
| US20110111388A1 (en) | 2011-05-12 |
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