EP1266023A2 - Lipopolysaccharide aus escherichia coli - Google Patents
Lipopolysaccharide aus escherichia coliInfo
- Publication number
- EP1266023A2 EP1266023A2 EP01940260A EP01940260A EP1266023A2 EP 1266023 A2 EP1266023 A2 EP 1266023A2 EP 01940260 A EP01940260 A EP 01940260A EP 01940260 A EP01940260 A EP 01940260A EP 1266023 A2 EP1266023 A2 EP 1266023A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lps
- coli
- lipoid
- extracted
- lipopolysaccharides
- 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- Withdrawn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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the invention relates to new lipopolysaccharides from E. coli.
- Endotoxins are bacterial structural components that, in contrast to exotoxins, are not excreted by living bacteria, but are mainly released after autolysis.
- the so-called classic endotoxins are heat-stable lipopolysaccharides, hereinafter referred to as LPS, from the outer cell membrane of Gram-negative bacteria.
- LPS consist of the so-called Lipoid A, a core oligosaccharide and a specific O-chain, whereby Lipoid A is responsible for the toxic effects of LPS.
- Endotoxins stimulate the production of mediators of the immune system such as interleukin 1, abbreviated IL-1, and tumor necrosis factor, abbreviated TNF ⁇ , in the macroorganism.
- IL-1 interleukin 1
- TNF ⁇ tumor necrosis factor
- the lipoid A of the coli bacteria has also been investigated by various research groups, it being found that the structure of the lipoid
- A is usually in the hexaacyl form and is the same for all serotypes of E. coli (Fig. 3).
- the structure of the hexaacyl compound was
- the specific O chain and the lipoid A are linked to one another via the core oligosaccharide.
- five different nuclear oligosaccharides are known in E. coli; we refer to O. Holst et a) Chemical structure of the core region of lipopolysaccharide, in: Bacterial Endotoxic Lipopolysacchariides, Vol. 1, Morrison D.C. and Ryan, J.L. (eds.), Boca Raton, FL, USA (1992) pp. 135-1 70 (see Fig. 4).
- the core region of the strain DSM 6601 corresponds to the well-known R1 structure. Structural peculiarities, however, consist in the fact that 8 phosphate residues per molecule of LPS were determined analytically, with lipoid A generally only having 2 phosphate residues. A non-stoichiometric content of pyrophosphoethanolamine was also found.
- the LPS of the strain DSM 6601 differs significantly from the previously known LPS from E. coli, particularly in the phosphorylated sugar portion of the core and in the degree of polymerization of the O chain.
- the lipoid A corresponds structurally and biologically to the type common for E. coli, which underlines the role of this substance in the biological effectiveness.
- the LPS described is not only suitable for identifying the coli strain carrying it, but also gives it a reduced pathogenicity while maintaining it immunomodulating effect.
- the fact that the O chain is ß- instead of ⁇ -glycosidically bound was clearly demonstrated for the first time using the example of the S / R mutant DSM 6601 for E. coli.
- the lipopolysaccharide (LPS) from E. coli DSM 6601 is a new smooth-rough (S / R) structure that is made up of previously known substructures ( Weg-specific chain, core oligosaccharide and lipoid A), and on the other hand in of the complex form presented here has been characterized for the first time and completely structurally (see Fig. 7).
- the O-specific chain consisting of only a single repeating unit of the serotype 06, is bound to the core oligosaccharide in a ⁇ -glycosidic manner and is therefore linked differently than within the O chain (glycosidic).
- the core oligosaccharide has the R1 structure, a chemical finding that is confirmed by serological tests with R1-specific antibodies.
- the lipoid A component has a specific chemical constitution which is characteristic of the E. coli lipoid A.
- the LPS from E. coli strain DSM 6601 has an amazing homogeneity. Only a heterogeneity regarding the phosphate substituents (PP and P-Etn vs. P and P) can be determined, which is described in this form for the first time.
- the P-Etn substituent in the core oligosaccharide and the R1-kemoligosaccharide in position .2 of the second heptose (Hep H ) could be clearly determined by means of complex NMR analyzes.
- the LPS was obtained from the washed and dried bacterial mass after a modified phenol / water extraction; in this regard, reference is made to O. Westphal et al Bacterial Lipopolysaccharides, Extraction with Phenol-Water and Further Applications of the Procedure, Meth. Carbohydr. Che., Vol. V (1965) pp. 83-91.
- RNAse ribonuclease A, bovine pancreas, Sigma
- DNAse DNAse I, bovine pancreas, grade II. Sigma
- Hexosamine (here means glucosamine + galactosamine, GIcN + GalN) was determined using the modified Morgan-Elson test (Strominger, JL, Park, JT Thompson, REJ Biol. Chem. 234, 3263-3268 (1959)), but alternatively also by means of HPLC (PICO-TAG, Waters). In contrast to the Morgan-Elson test, this analysis method not only allows GIcN and GalN to be determined and quantified separately, but also the presence of GIcN phosphate, 2-ethanolamine (Etn) and 2-ethanolamine phosphate (Etn- P), which often occur in LPS, are determined in parallel.
- GC Gas liquid chromatography
- GC-MS gas-liquid chromatography / mass spectrometry
- HP-1 capillary column 30 m. Hewlett Packard
- the GC or GC-MS analyzes were used for the determination of the neutral sugars (Glc, Gal, Hep, Man) as their alditol acetates (Sawardeker, JS, Slonerker, JH Jeanes, A.
- LPS (258.8 mg) was suspended in 25 mL 0.1 M NaOAc / HOAc (pH 4.4) and subjected to mild acid hydrolysis at 100 ° C for 1 h.
- the lipophilic portion (Lipoid A) was then extracted three times from the hydrolyzate with 25 mL chloroform (yield 23.2 mg).
- the lipoid A from the organic phase was further purified by means of preparative layer chromatography (PSC) (2 mm PSC silica gel 60 plate, E. Merck, Darmstadt), which was washed with chloroform-methanol-water 100: 75: 15 (v / v / v ) was chromatographed and developed by immersion in distilled water.
- PSC preparative layer chromatography
- the main fraction (R f -. 0.4) is the purified diphosphorylated hexaacyl lipoid A (DPHLA-Ec 6601 ).
- the purified DPHLA-Ec 6501 (yield 2.06 mg) was dissolved in chloroform-methanol 8: 2 (v / v) and treated with ion exchanger (Amberlite IRA 120, H + form) before the MALDI-TOF-MS.
- An aliquot (250 ⁇ g) of the purified DPHLA-Ec 6601 was used for the biological experiments.
- the aqueous phase of the chloroform extraction was freeze-dried (yield: 272 mg) and the oligosaccharide using a TSK column [3.5 x 90 cm, TSK HW-40 (S), E. Merck] in pyridine-acetic acid-water 8: 20: 2000, (v / v / v) further purified.
- the individual oligosaccharide fractions (pools A, B, C and D) were analyzed by GC-MS and NMR spectroscopy.
- the main fraction (Pool A, # 28-41; 49.05 mg), which contained both sugar components of the O chain (Man, GalNac) and those of the core oligosaccharide (Hep, Kdo), was further purified.
- the other fractions contained monosaccharides, undetected artifacts of Kdo (anhydro- and lactones) and finally salt.
- the main fraction of the TSK separation showed all components of the core oligosaccharide (Kdo, Gal, Hep) and the O chain (Man, GalNAc) in both the GC-MS analysis and the NMR analysis and was therefore further processed.
- HPLC high pressure anion exchange chromatography
- the semi-preparative HPAEC was carried out using a CarboPac PA1 column [(9 mm x 250 mm) Dionex System] with the same salt gradient as in the analytical HPAEC (5 min at 0, then in 50 min at 0.5 M NaOAc) and a flow rate of 4 ml / min.
- the oligosaccharide (42 mg; pool A from the TSK column) was applied to the semi-preparative HPAEC in two analog HPAEC runs.
- the ElViat was collected in fractions of one minute each, and these were analyzed individually using the analytical. HPAEC examined.
- MALDI-TOF Matrix-assisted laser desorption / ionization time-of-flight
- Matrix-assisted laser desorption / ionization time-of-flight mass spectrometry was performed on a Bruker-Reflex "time-of-flight spectrometer (Bruker-Franzen Analytik, Bremen) exclusively in the linear configuration and in negative mode at an acceleration voltage of 20 kV and the "delayed ion extraction" added.
- the samples were first dissolved in chloroform (Lipoid A) or distilled water (oligosaccharide fractions) in a concentration of 10 ⁇ g / ⁇ L, and 2 ⁇ L aliquot thereof with 2 ⁇ L of a matrix solution consisting of 0.5 M 2,4,6 - Trihydroxyacetophenon (Aldrich, Steinheim) dissolved in methanol. aliquots (0.5 ⁇ L) of this mixture was applied to a metal holder and dried with a hair dryer.
- chloroform Lipoid A
- distilled water oligosaccharide fractions
- the serological analyzes were carried out as Western blots, which were developed with three different antibodies.
- Polyclonal anti-O6 antiserum (rabbit) was produced with E. coli strain DSM 6601 (serotype 06: K5: H1) in the Hygiene Institute Hamburg (Prof. Bockemühl).
- Polyclonal anti-f. coli R1 antiserum (rabbit, internal name: K299 / d58) was obtained by immunization with a rough-form mutant which has an R1 core (anti-R1).
- a monoclonal antibody (WN1-222-5, internal name F 167) was used, which cross-reacts broadly against all E. coli nuclear oligosaccharides from a minimal structure (> Rd).
- the LPS preparations obtained by the described method were subjected to polyacrylamide gel electrophoresis together with comparison LPS (cf. Fig. 1). 16%) polyacrylamide gels were used to display the SDS-PAGE analysis of the LPS (UK, Laemmli, Cleavage of structural proteins during assembly of head of bacteriophage T4, Nature, 227, 680-685 (1970)).
- the LPS bands were stained using the sensitive alkaline silver staining method (CM. Tsai and Frasch, CF, A sensitive silver stain for detecting lipopolysaccharides in polyacrylamide gels, anal. Biochem., 119, 1982, 115-119).
- IL-1 activity is determined using an MNC proliferation assay in a culture supernatant.
- Human monocytes (MNC) are isolated from the peripheral blood of voluntary donors (8 x 10 5 MNC / 200 L) and transferred to a glass and mixed with test substance at the same time.
- MNC Human monocytes
- the cells are first stimulated with LPS (10 ng / mL). After an incubation period of 8 hours, 150 ml of the culture supernatant are examined for cytokine release.
- IL-1 activity is determined using a fibroblast proliferation assay in a culture supernatant. The necessary fibroblasts were obtained from human foreskin. The proliferation of these fibroblasts was increased by IL-1.
- the biological activity in the culture supernatant is determined by comparing the dose-response curve of the culture supernatant with the curve of the standard in a probit analysis.
- the LPS from a known endotoxically active bacterial strain (Salmonella friedenau) serves as a reference (positive control) and is therefore shown in Figure 5.
- the TNF ⁇ activity in a culture supernatant is determined in a cytotoxicity assay with the TNF-sensitive cell line L929.
- the TNF activity can be determined by comparing the dose-response curve of the culture supernatant with the curve of the standard in a probit analysis.
- a known endotoxically active LPS from Salmonella friedenau serves as a positive control. The results are shown graphically in Figure 6.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Molecular Biology (AREA)
- Polymers & Plastics (AREA)
- Microbiology (AREA)
- Immunology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biotechnology (AREA)
- Pharmacology & Pharmacy (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Engineering & Computer Science (AREA)
- Genetics & Genomics (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Saccharide Compounds (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10013539 | 2000-03-20 | ||
| DE10013539A DE10013539B4 (de) | 2000-03-20 | 2000-03-20 | Lipopolysaccharide aus Escherichia coli, Verfahren zu deren Herstellung und deren Verwendungen |
| PCT/EP2001/003153 WO2001070756A2 (de) | 2000-03-20 | 2001-03-20 | Lipopolysaccharide aus escherichia coli |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1266023A2 true EP1266023A2 (de) | 2002-12-18 |
Family
ID=7635468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01940260A Withdrawn EP1266023A2 (de) | 2000-03-20 | 2001-03-20 | Lipopolysaccharide aus escherichia coli |
Country Status (28)
| Country | Link |
|---|---|
| US (1) | US6833451B2 (de) |
| EP (1) | EP1266023A2 (de) |
| JP (1) | JP2003528175A (de) |
| KR (1) | KR20030047878A (de) |
| CN (1) | CN1436245A (de) |
| AP (1) | AP2002002622A0 (de) |
| AU (2) | AU7389901A (de) |
| BG (1) | BG107115A (de) |
| BR (1) | BR0109392A (de) |
| CA (1) | CA2402544A1 (de) |
| CZ (1) | CZ20023469A3 (de) |
| DE (1) | DE10013539B4 (de) |
| EA (1) | EA005217B1 (de) |
| EE (1) | EE200200537A (de) |
| HK (1) | HK1053148A1 (de) |
| HR (1) | HRP20020682A2 (de) |
| HU (1) | HUP0204540A3 (de) |
| IL (1) | IL151785A0 (de) |
| IS (1) | IS6517A (de) |
| MX (1) | MXPA02009215A (de) |
| NO (1) | NO20024480L (de) |
| NZ (1) | NZ520968A (de) |
| PL (1) | PL368447A1 (de) |
| SK (1) | SK13492002A3 (de) |
| UA (1) | UA75068C2 (de) |
| WO (1) | WO2001070756A2 (de) |
| YU (1) | YU71202A (de) |
| ZA (1) | ZA200207408B (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030031684A1 (en) | 2001-03-30 | 2003-02-13 | Corixa Corporation | Methods for the production of 3-O-deactivated-4'-monophosphoryl lipid a (3D-MLA) |
| DE10328669B4 (de) * | 2003-06-26 | 2005-12-01 | Pharma-Zentrale Gmbh | Plasmidfreier Klon des E. coli Stammes DSM 6601 |
| US20050191276A1 (en) * | 2003-11-25 | 2005-09-01 | Gregory Gurtner | Treatment of inflammatory bowel disease through induction of indoleamine 2.3-dioxygenase |
| US20050238651A1 (en) * | 2003-11-25 | 2005-10-27 | Gurtner Gregory J | Treatment of inflammatory bowel disease |
| WO2006025995A2 (en) * | 2004-07-27 | 2006-03-09 | The Regents Of The University Of California | Compositions and methods using md-2 mutants and chimeric proteins |
| CN100354428C (zh) * | 2005-01-13 | 2007-12-12 | 丁友玲 | 隧道式干热灭菌设备测试用内毒素指示剂的制备方法 |
| EP1961823B1 (de) * | 2005-11-28 | 2024-06-12 | Biomedical Research Group Inc. | Verfahren zur herstellung eines lipopolysaccharids und lipopolysaccharid |
| WO2011133595A1 (en) | 2010-04-19 | 2011-10-27 | Massachusetts Institute Of Technology | A polymer-nanostructure composition for selective molecular recognition |
| US20130066064A1 (en) * | 2010-05-20 | 2013-03-14 | Glaxosmithkline Biologicals S.A, | Novel process |
| CN105137073A (zh) * | 2015-08-06 | 2015-12-09 | 中国兽医药品监察所 | 牛布鲁氏菌胶体金抗体检测试纸条 |
| PL432842A1 (pl) * | 2020-02-10 | 2021-08-16 | Uniwersytet Warszawski | LPS do zastosowania w indukowaniu u osobnika tolerancji na alergeny pokarmowe wywołujące alergie pokarmowe zależne od IgE |
| CA3171408A1 (en) * | 2020-03-13 | 2021-09-16 | Martine Caroff | Detoxified lipopolysaccharides (lps), naturally non-toxic lps, and uses thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19844191A1 (de) * | 1998-09-28 | 2000-03-30 | Pharma Zentrale Gmbh | Lipopolysaccharide aus Escherichia coli |
-
2000
- 2000-03-20 DE DE10013539A patent/DE10013539B4/de not_active Expired - Lifetime
-
2001
- 2001-03-20 AP APAP/P/2002/002622A patent/AP2002002622A0/en unknown
- 2001-03-20 HR HRP20020682 patent/HRP20020682A2/hr not_active Application Discontinuation
- 2001-03-20 AU AU7389901A patent/AU7389901A/xx active Pending
- 2001-03-20 HU HU0204540A patent/HUP0204540A3/hu unknown
- 2001-03-20 KR KR1020027012241A patent/KR20030047878A/ko not_active Abandoned
- 2001-03-20 CZ CZ20023469A patent/CZ20023469A3/cs unknown
- 2001-03-20 IL IL15178501A patent/IL151785A0/xx unknown
- 2001-03-20 US US10/239,254 patent/US6833451B2/en not_active Expired - Fee Related
- 2001-03-20 WO PCT/EP2001/003153 patent/WO2001070756A2/de not_active Ceased
- 2001-03-20 UA UA2002108256A patent/UA75068C2/uk unknown
- 2001-03-20 BR BR0109392-4A patent/BR0109392A/pt not_active IP Right Cessation
- 2001-03-20 EP EP01940260A patent/EP1266023A2/de not_active Withdrawn
- 2001-03-20 JP JP2001568957A patent/JP2003528175A/ja active Pending
- 2001-03-20 PL PL01368447A patent/PL368447A1/xx unknown
- 2001-03-20 EE EEP200200537A patent/EE200200537A/xx unknown
- 2001-03-20 HK HK03104380.7A patent/HK1053148A1/zh unknown
- 2001-03-20 SK SK1349-2002A patent/SK13492002A3/sk unknown
- 2001-03-20 AU AU2001273899A patent/AU2001273899B2/en not_active Ceased
- 2001-03-20 MX MXPA02009215A patent/MXPA02009215A/es unknown
- 2001-03-20 NZ NZ520968A patent/NZ520968A/en unknown
- 2001-03-20 CN CN01806916A patent/CN1436245A/zh active Pending
- 2001-03-20 CA CA002402544A patent/CA2402544A1/en not_active Abandoned
- 2001-03-20 EA EA200200997A patent/EA005217B1/ru not_active IP Right Cessation
- 2001-03-20 YU YU71202A patent/YU71202A/sh unknown
-
2002
- 2002-08-21 IS IS6517A patent/IS6517A/is unknown
- 2002-09-16 ZA ZA200207408A patent/ZA200207408B/xx unknown
- 2002-09-18 BG BG107115A patent/BG107115A/bg unknown
- 2002-09-19 NO NO20024480A patent/NO20024480L/no not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0170756A2 * |
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