EP1660527A1 - Isoliertes photoprotein berovin, sowie dessen verwendung - Google Patents
Isoliertes photoprotein berovin, sowie dessen verwendungInfo
- Publication number
- EP1660527A1 EP1660527A1 EP04764112A EP04764112A EP1660527A1 EP 1660527 A1 EP1660527 A1 EP 1660527A1 EP 04764112 A EP04764112 A EP 04764112A EP 04764112 A EP04764112 A EP 04764112A EP 1660527 A1 EP1660527 A1 EP 1660527A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- photoprotein
- nucleic acid
- berovin
- sequence
- acid molecules
- 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.)
- Withdrawn
Links
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- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/43504—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates
- C07K14/43595—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates from coelenteratae, e.g. medusae
Definitions
- the invention relates to the photoprotein berovin, its nucleotide and amino acid sequence, and the activity and use of the photoprotein berovin.
- Photoproteins Bioluminescence is the phenomenon of light generation by living things. It is the result of biochemical reactions in cells in which the chemical energy is released in the form of light quanta (so-called cold emission through chemiluminescence). Light generated in this way is monochromatic, because it is emitted at a discrete electron transition, but can be shifted into longer-wave spectral ranges by secondary fluorescent dyes (e.g. fluorescent proteins in the case of light jellyfish of the genus Aequora).
- secondary fluorescent dyes e.g. fluorescent proteins in the case of light jellyfish of the genus Aequora
- the biological function is diverse: around 90% of all living things shine in the sea depth between 200 and 1000 m (mesopelagial).
- the light signals are used here for partner advertising, deception and as bait. Fireflies and fireflies also use the light signals to find partners.
- GFP green fluorescent protein
- Table 2 Overview of some photoproteins. The organism from which the protein has been isolated, the name of the photoprotein and a selection of patents or applications are given.
- Bioluminescence is widely used in technology today, e.g. in the form of bio-indicators for environmental pollution or in biochemistry for the sensitive detection of proteins, for the quantification of certain compounds or as so-called “reporters” in the study of cellular gene regulation.
- the photoproteins differ not only because of their nucleotide and amino acid sequence, but also because of their biochemical and physical properties. It could be shown that changing the amino acid sequence of photoproteins can change the physical and biochemical properties. Examples of mutagenized photoproteins are described in the literature (US 6,495,355; US 5,541,309; US 5,093,240; Shimomura et al., 1986).
- Reporter or indicator genes are generally referred to as genes whose gene products can be easily detected using simple biochemical or histochemical methods. There are at least 2 types of reporter genes.
- Resistance genes are genes whose expression gives a cell resistance to antibiotics or other substances, the presence of which in the growth medium leads to cell death if the resistance gene is missing.
- Reporter genes are used in genetic engineering as merged or unfused indicators. The most common reporter genes include beta-galactosidase (Alam et al., 1990), alkaline phosphatase (Yang et al., 1997; Cullen et al., 1992), luciferases and other photoproteins (Shinomura, 1985; Phillips GN, 1997; Snowdowne et al., 1984).
- Luminescence is the radiation of photons in the visible spectral range, this being done by excited emitter molecules. In contrast to fluorescence, the energy is not supplied from outside in the form of radiation of shorter wavelength.
- Chemiluminescence is a chemical reaction that leads to an excited molecule that glows when the excited electrons return to the ground state. If this reaction is catalyzed by an enzyme, one speaks of bioluminescence.
- the enzymes involved in the reaction are generally referred to as luciferases.
- the species Beroe abyssicola belongs to the Cnidaria, especially to the Medusas. Isolation of the cDNA
- reaction products were incubated for 30 minutes at 37 ° C. with proteinase K and the cDNA was precipitated with ethanol.
- the expression cDNA bank was carried out using the “SMART cDNA Library Construction Kit” from Clontech (USA) according to the manufacturer's instructions.
- the cloning was carried out into the expression vector pTriplEx2 (Clontech; USA).
- the expression vectors were electroplated into bacteria of strain E. coli XLl-Blue transformed.
- the bacteria were plated on LB culture media and incubated for 24 hours at 37 ° C. Replica plating was then carried out by transferring the bacteria to a further culture medium plate using a nitrocellulose filter. The replica plate was again incubated for 24 hours at 37 ° C. and the grown bacterial colonies were transferred to LB liquid medium. After the addition of IPTG (final concentration 0.1 mM), the bacteria were incubated for 4 hours at 37 ° C. on a shaker. The bacteria were harvested by centrifugation and the bacterial mass was resuspended in 0.5 ml digestion buffer (5 mM EDTA, 20 mM Tris-HCL pH 9.0) at 0 ° C. The bacteria were then disrupted using ultrasound.
- IPTG final concentration 0.1 mM
- the lysates were incubated at 4 ° C. for 3 hours after the addition of coelenterazines (final concentration 10E-07 M). The bioluminescence was then measured after the addition of calcium chloride (final concentration 20 mM) in the luminometer.
- a photoprotein was identified.
- the photoprotein was referred to as berovin, and the photoprotein berovin is shown in detail below.
- the photoprotein berovin shows the highest homology at the amino acid level to obelin from Obelia longissima with an identity of 29% (shown in Example 5). At the nucleic acid level, the identity is below 30% (shown in Example 6).
- the BLAST method was used for sequence comparison (Altschul et al., 1997).
- the invention also relates to functional equivalents of berovin.
- Functional equivalents are proteins that have comparable physicochemical properties and are at least 70% homologous to SEQ LO NO: 2. A homology of at least 80% or 90% is preferred. A homology of at least 95% is particularly preferred.
- the photoprotein berovin is suitable as a reporter gene for cellular systems, especially for receptors, for ion channels, for transporters, for transcription factors or for inducible systems.
- the photoprotein berovin is suitable as a reporter gene in bacterial and eukaryotic systems, especially in mammalian cells, in bacteria, in yeast, in Bakulo, in plants.
- the photoprotein berovin is suitable as a reporter gene for cellular systems in combination with bioluminescent or chemiluminescent systems, especially systems with luciferases, with oxygenases, with phosphatases.
- the photoprotein berovin is particularly suitable as a fusion protein for receptors, for ion channels, for transporters, for transcription factors, for proteinases, for kinases, for phosphodiesterases, for hydrolases, for peptidases, for transferases, for membrane proteins, for glycoproteins.
- the photoprotein berovin is particularly suitable for immobilization by antibodies, by biotin, by magnetic or magnetizable carriers.
- the photoprotein berovin is suitable as a protein for energy transfer systems, especially FRET (Fluorescence Resonance Energy Transfer), BRET (Bioluminescence Resonance Energy Transfer), FET (field effect transistors), FP (fluorescence polarization), HTRF (Homogeneous time-resolved fluorescence) systems.
- FRET Fluorescence Resonance Energy Transfer
- BRET Bioluminescence Resonance Energy Transfer
- FET field effect transistors
- FP fluorescence polarization
- HTRF Homogeneous time-resolved fluorescence
- the photoprotein berovin is suitable as a label for substrates or ligands especially for proteases, for kinases, for transferases.
- the photoprotein berovin is suitable for expression in bacterial systems especially for titer determination, as a substrate for biochemical systems especially for proteinases and kinases.
- the photoprotein berovin is particularly suitable as a marker coupled to antibodies, coupled to enzymes, coupled to receptors, coupled to ion channels and other proteins.
- the photoprotein berovin is particularly suitable as a reporter gene for pharmacological drug searches in HTS (High Throughput Screening).
- the photoprotein berovin is suitable as a component of detection systems especially for ELISA (enzyme-linked immunosorbent assay), for immunohistochemistry, for western blot, for confocal microscopy.
- ELISA enzyme-linked immunosorbent assay
- the photoprotein berovin is suitable as a marker for the analysis of interactions, especially for protein-protein interactions, for DNA-protein interactions, for DNA-RNA interactions, for RNA-RNA interactions, for RNA-protein interactions (DNA : deoxyribonucleic acid; RNA: ribonucleic acid;).
- the photoprotein berovin is suitable as a marker or fusion protein for expression in transgenic organisms, especially in mice, in rats, in hamsters and other mammals, in primates, in fish, in worms, in plants.
- the photoprotein berovin is suitable as a marker or fusion protein for analyzing embryonic development.
- the photoprotein berovin is suitable as a marker via a coupling mediator, specifically via biotin, via NHS (N-hydroxysulfosuccimide), via CN-Br.
- the photoprotein berovin is suitable as a reporter coupled to nucleic acids, especially to DNA, to RNA.
- the photoprotein berovin is suitable as a reporter coupled to proteins or peptides.
- the photoprotein berovin is suitable as a reporter for measuring intra- or extracellular calcium concentrations.
- the photoprotein berovin is suitable for the characterization of signal cascades in cellular systems.
- the photoprotein berovin coupled to nucleic acids or peptides is particularly suitable as a probe for Northern blots, for Southern blots, for Western blots, for ELISA, for nucleic acid sequencing, for protein analysis, chip analysis.
- the photoprotein berovin is suitable for labeling pharmacological formulations, especially infectious agents, antibodies, and "small molecules”.
- the photoprotein berovin is suitable for geological investigations especially for ocean, groundwater and river currents.
- the photoprotein berovin is suitable for expression in expression systems, especially in in vitro translation systems, in bacterial systems, in yeast systems, in Bakulo systems, in viral systems, in eukaryotic systems.
- the photoprotein berovin is suitable for the visualization of tissues or cells during surgery, especially for invasive, non-invasive, and minimally invasive.
- the photoprotein berovin is also suitable for marking tumor tissues and other phenotypically modified tissues, especially for histological examinations and surgical interventions.
- the invention also relates to the purification of the photoprotein berovin, especially as a wild-type protein, as a fusion protein, as a mutagenized protein.
- the invention also relates to the use of the photoprotein berovin in the field of cosmetics, in particular bath additives, lotions, soaps, body colors, toothpaste, body powders.
- the invention also relates to the use of the photoprotein berovin for coloring food, bath additives, ink, textiles and plastics.
- the invention also relates to the use of the photoprotein berovin for coloring paper, especially greeting cards, paper products, wallpapers, handicrafts.
- the invention also relates to the use of the photoprotein berovin for coloring liquids, especially for water pistols, for fountains, for drinks, for ice.
- the invention also relates to the use of the photoprotein berovin for the production of toys, especially finger paint, and make-up.
- the invention relates to nucleic acid molecules which encode the polypeptide disclosed by SEQ JJD NO: 2.
- the invention relates to the polypeptide with the amino acid sequence disclosed in SEQ LD NO: 2.
- the invention further relates to nucleic acid molecules selected from the group consisting of
- nucleic acid molecules encoding a polypeptide which comprises the amino acid sequence disclosed by SEQ LD NO: 2;
- nucleic acid molecules whose complementary strand hybridizes with a nucleic acid molecule from a) or b) under stringent conditions and which have the biological function of a photoprotein;
- nucleic acid molecules which differ from those mentioned under c) due to the degeneracy of the genetic code
- nucleic acid molecules which have a sequence homology of at least 95% to SEQ LD NO: 1 and whose protein product has the biological function of a photoprotein;
- nucleic acid molecules which have a sequence homology of at least 65% to SEQ LD NO: 1 and whose protein product has the biological function of a photoprotein.
- the invention also relates to nucleic acid molecules which have a sequence homology of at least 95%, 90%, 85%, 80%, 75%, 70%, 65% or 60% to SEQ JJD NO: 1 and code for a polypeptide which has the properties of a photoprotein.
- the invention relates to the above-mentioned nucleic acid molecules in which the sequence contains a functional promoter 5 'to the sequence coding for the photoprotein.
- the invention also relates to nucleic acid molecules as described above, which are part of recombinant DNA or RNA vectors.
- the invention relates to organisms which contain such a vector.
- the invention relates to oligonucleotides with more than 10 consecutive nucleotides which are identical or complementary to the DNA or RNA sequence of the berovin molecules or the further molecules according to the invention.
- the invention relates to photoproteins which are encoded by the nucleotide sequences described above.
- the invention relates to methods for expressing the photoprotein polypeptides according to the invention in bacteria, eukaryotic cells or in in vitro expression systems.
- the invention also relates to methods for purifying / isolating a photoprotein polypeptide according to the invention.
- the invention relates to peptides with more than 5 consecutive amino acids which are recognized immunologically by antibodies against the photoproteins according to the invention.
- the invention relates to the use of the nucleic acids according to the invention, coding for photoproteins, as marker or reporter genes, in particular for pharmacological search for active substances and diagnostics.
- the invention relates to the use of the photoproteins according to the invention or a nucleic acid according to the invention coding for a photoprotein as a marker or reporter or as a marker or reporter gene.
- the invention relates to the use of the photoprotein berovin (SEQ ID NO: 2) or the use of a nucleic acid coding for the photoprotein berovin as a marker or reporter or as a marker or reporter gene, in particular for pharmacological active ingredient search and diagnostics.
- the invention relates to the use of the nucleic acid shown in SEQ ID NO: 1 as a marker or reporter gene, in particular for pharmacological search for active substances and diagnostics.
- the invention relates to the use of the peptide shown in SEQ ID NO: 3 and the nucleic acid sequence SEQ JD NO: 1 on which this is based as a marker or reporter gene, in particular for pharmacological search for active substances and diagnostics.
- the invention also relates to polyclonal or monoclonal antibodies which recognize a polypeptide according to the invention.
- the invention also relates to monoclonal or polyclonal antibodies which recognize the photoprotein berovin (SEQ JJD NO: 2).
- Expression refers to the production of a molecule which, after the gene has been introduced into a suitable host cell, allows the transcription and translation of the foreign gene cloned into an expression vector.
- Expression vectors contain the control signals required for the expression of genes in cells of prokaryotes or eukaryotes.
- expression vectors can be constructed in two different ways.
- transcription fusions the protein encoded by the cloned-in foreign gene is synthesized as an authentic, biologically active protein.
- the expression vector carries all 5 'and 3 "control signals required for expression.
- the protein encoded by the cloned-in foreign gene is expressed as a hybrid protein together with another protein that can be easily detected.
- the additionally introduced protein part not only stabilizes the foreign gene cloned in in many cases Coded protein before degradation by cellular proteases, but can also be used for the detection and isolation of the hybrid protein formed.
- the expression can be both transient and stable. Bacteria, yeasts, viruses and eukaryotic systems are suitable as host organisms.
- protein purification The isolation of proteins (even after overexpression) is often referred to as protein purification.
- a variety of established methods and processes are available for protein purification.
- Solid-liquid separation is a basic operation in protein isolation. Both in the separation of the cells from the culture medium and in the clarification of the crude extract after cell disruption and removal of the cell debris, in the separation of precipitates after precipitation, etc., the process step is necessary. It is done by centrifugation and filtration. The cell wall must be destroyed or made permeable by obtaining intracellular proteins. Depending on the scale and organism, high-pressure homogenizers or agitator ball or glass bead mills are used. Mechanical cell integrations and ultrasound treatment are used on a laboratory scale.
- Extracellular proteins are obtained in relatively dilute solutions. Like extracellular proteins, they must be concentrated before further use. In addition to the processes already mentioned, ultrafiltration has also proven itself - also on an industrial scale.
- Inorganic salts as accompanying substances in proteins are often undesirable for specific applications. Among other things, you can removed by gel filtration, dialysis and diafiltration.
- Numerous proteins are used as dry preparations. Vacuum, freeze and spray drying are important drying methods.
- the photoprotein berovin is encoded by the following nucleotide sequence (SEQ LD NO: 1):
- Figure 1 shows the plasmid map of the vector pTriplEX2-Berövin.
- Figure 2 shows the plasmid map of the vector pcDNA3 -Berovin
- Figure 3 shows the bioluminescence activity of berovin after bacterial expression.
- Y RLU: relative light units
- X dilution
- black bars berovin
- gray bars control lysate
- Figure 4 shows the bioluminescent activity of berovin after expression in CHO cells.
- Y RLU: relative light units
- X ATP (logarithmic representation in mol / 1)
- Figure 7 shows the alignment of berovin and obelin (Obelia longissima) at the amino acid level
- the plasmid pTriplEx2 from Clontech was used as the vector for producing the construct shown below.
- the derivative of the vector was named pTriplEx2 berovin.
- the vector pTriplEx2-berovin was used to express berovin in bacterial systems.
- FIG. 1 shows the plasmid map of the vector pTriplEX2-berovin.
- the plasmid pcDNA3.1 (+) from Clontech was used as the vector for producing the construct shown below.
- the derivative of the vector was named pcDNA3 berovin.
- the vector pcDNA3 berovin was used to express berovin in eukaryotic systems.
- FIG. 2 shows the plasmid map of the vector pcDNA3-berovin.
- Bacterial expression was carried out in E. coli strain BL21 (DE3) by transforming the bacteria with the expression plasmids pTriplEX2 -Berovin and pTriplEX2.
- the transformed bacteria were incubated in LB medium at 37 ° C. for 3 hours and expression was induced for 4 hours by adding EPTG to a final concentration of 1 mM.
- the induced bacteria were harvested by centrifugation, resuspended in 50 mM Tris HCl (pH 9.0) + 5 mM EDTA and disrupted by ultrasound. The lysate was then centrifuged for 15 minutes at 13000 revolutions per minute (16000 rcf) and the supernatant was removed.
- the supernatant (dilutions 1: 5; 1:10; 1:20 and 1:50 with Tris / HCl pH 9.0)) was mixed with coelenterazine (10E-07 M coelenterazine in Tris / HCl pH 9.0) for 3 hours incubated in the dark. Immediately after the addition of 5 mM calcium chloride, the bioluminescence was measured in the luminometer. The integration time of the measurement was 40 seconds.
- FIG. 3 shows the results of the bioluminescence measurement of berovin in bacteria.
- the constitutive eukaryotic expression was carried out in CHO cells by transfection of the cells with the expression plasmids pcDNA3-berovin and pcDNA3.1 (+) in transient experiments.
- 10,000 cells per hole were plated in DMEM-F12 medium on 96-well microtiter plates and incubated at 37 ° C. overnight.
- the transfection was carried out using the Fugene 6 kit (Röche) according to the manufacturer's instructions.
- the transfected cells were incubated overnight at 37 ° C in DMEM-F12 medium.
- the medium was then removed and replaced by 50 ⁇ l of coelenterazine (10E-07 M coelenterazine in PBS).
- the cells were incubated for 3 hours at 37 ° C. and then ATP (adenosine triphosphate) was added to a final concentration of 1 ⁇ M.
- the measurement was started immediately after the addition in the luminometer.
- the integration time was 1 second with a total measurement
- FIG. 4 shows the results of the bioluminescence measurement of berovin in CHO cells.
- FIG. 7 shows the alignment of berovin with obelin (Obelia longissima) at the amino acid level.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10339567A DE10339567A1 (de) | 2003-08-26 | 2003-08-26 | Isoliertes Photoprotein Berovin, sowie dessen Verwendung |
| PCT/EP2004/009118 WO2005021591A1 (de) | 2003-08-26 | 2004-08-13 | Isoliertes photoprotein berovin, sowie dessen verwendung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1660527A1 true EP1660527A1 (de) | 2006-05-31 |
Family
ID=34202123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04764112A Withdrawn EP1660527A1 (de) | 2003-08-26 | 2004-08-13 | Isoliertes photoprotein berovin, sowie dessen verwendung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070042375A1 (de) |
| EP (1) | EP1660527A1 (de) |
| DE (1) | DE10339567A1 (de) |
| WO (1) | WO2005021591A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005016980A1 (de) * | 2005-04-13 | 2006-11-02 | Bayer Healthcare Ag | Isoliertes Photoprotein gr-Bolinopsin, sowie dessen Verwendung |
| US8431698B2 (en) * | 2007-08-29 | 2013-04-30 | Biolume Inc. | Bioluminescent endoscopy methods and compounds |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3342689A (en) * | 1988-03-24 | 1989-10-16 | Igen Incorporated | Luminescent chimeric proteins |
| US6495355B1 (en) * | 1999-06-22 | 2002-12-17 | The Board Of Trustees Of The Leland Stanford Junior University | Red-shifted luciferase |
-
2003
- 2003-08-26 DE DE10339567A patent/DE10339567A1/de not_active Withdrawn
-
2004
- 2004-08-13 EP EP04764112A patent/EP1660527A1/de not_active Withdrawn
- 2004-08-13 US US10/569,808 patent/US20070042375A1/en not_active Abandoned
- 2004-08-13 WO PCT/EP2004/009118 patent/WO2005021591A1/de not_active Ceased
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| Title |
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| See references of WO2005021591A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070042375A1 (en) | 2007-02-22 |
| DE10339567A1 (de) | 2005-03-24 |
| WO2005021591A1 (de) | 2005-03-10 |
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