WO1997013784A1 - Recepteur lactoferrine d'helicobacter - Google Patents
Recepteur lactoferrine d'helicobacter Download PDFInfo
- Publication number
- WO1997013784A1 WO1997013784A1 PCT/FR1995/001317 FR9501317W WO9713784A1 WO 1997013784 A1 WO1997013784 A1 WO 1997013784A1 FR 9501317 W FR9501317 W FR 9501317W WO 9713784 A1 WO9713784 A1 WO 9713784A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- helicobacter
- protein
- lactoferrin
- column
- approximately
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
- C07K14/205—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Campylobacter (G)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
Definitions
- the present invention relates to the prevention and treatment of gastric infections due to the Helicobacter bacteria. It relates to a newly identified surface protein purified from Helicobacter as well as its use as a vaccine. This protein has the ability to bind to lactoferrin of human origin.
- Helicobacter pylori is a gram-negative bacterium found on the surface of the gastric mucosa in humans. This bacterium is associated with a certain number of gastroduodenal pathologies of which it is, at least for some, the pathogenic agent responsible. These are in particular acute or chronic gastritis (inflammation of the mucosa), ulcers (destruction of the mucosa), dyspepsia and certain cancers such as gastric adenocarcinoma.
- antigens include urease (WO 90/4030), cytotoxin and heat-shock protein (WO 93/18150) and adhesins.
- a helicobacter protein in substantially purified form said protein having an apparent molecular weight of approximately 98 kD or approximately 70 kD, as defined after migration on SDS-PAGE gel to approximately 10% polyacrylamide and capable of being substantially purified from a membrane extract of Helicobacter by affinity chromatography on a lactoferrin column; so
- a pharmaceutical composition intended for the treatment or prevention of a Helicobacter infection which comprises, as a vaccinating principle, at least one protein according to the invention.
- protein of 98 or 70 kD substantially purified means a preparation of this protein devoid of most of the cellular constituents of Helicobacter. Obviously, minor contaminants are not excluded.
- a protein according to the invention can be obtained from Helicobacter or can be obtained by recombinant route by expression of the corresponding DNA fragment, in a heterologous system, bacteria,
- J ⁇ yeast or mammalian cells J ⁇ yeast or mammalian cells.
- a protein according to the invention can be obtained from H. pylori.
- a composition according to the invention can be produced in a conventional manner.
- a protein according to the invention is combined with an adjuvant, a diluent or a support which is acceptable from a point of view.
- a composition according to the invention can be administered by any conventional route in use in the field of vaccines, in particular by oral or parenteral route.
- the administration can take place in a single or repeated dose one or more times after a certain time interval.
- the appropriate dosage will vary depending on various parameters, for example, the individual being treated or the mode of administration.
- FIG. 1 presents the electrophoretic profile on SDS-PAGE gel (polyacrylamide 10%) of a preparation eluted from a column of Sepharose 4B-lactoferrin, after application a membrane extract of H. pylori, as revealed in Coomassie blue (column A) and silver nitrate (column B).
- the molecular weight standards are phosphorylase B (94 kD), bovine albumin (67 kD), ovalbumin (43 kD), carbonic anhydrase (30 kD), trypsin inhibitor isolated from soybeans ( soybean trypsin inhibitor) (20.1 kD) and alpha-lactalbumin (14.4 kD).
- the two-phase medium comprises a solid phase 0 consisting of 10 ml of Colombia agar (bioMérieux) supplemented with 6% fresh sheep blood and a liquid phase consisting of 3 ml Trypticase soy broth (Difco) containing 20% fetal calf serum.
- the vials are placed in a sealed bag called “ generbag “(BBL) and 5 incubated with gentle rotary shaking at 37" C for 48 hours under microaerophilic conditions (8-10% CO_, 5-7% 0_ and 85-87% N2) obtained by the System Microaer (BBL) .
- a subculture is produced by seeding from this liquid culture, Petri dishes containing a solid agar medium (Colombia agar supplemented with 6% fresh sheep blood). From a culture obtained in a 25 cm 2 flask, approximately 50 Petri dishes are inoculated. These boxes are placed in anaerobic jars under microaerophilic conditions obtained by the Anaerocult C system (Merck). The Petri dishes are thus incubated for 4 days at 37 ° C.
- a solid agar medium Colombia agar supplemented with 6% fresh sheep blood
- the bacterial layers are harvested by scraping in the presence of a small volume of PBS (bioMérieux) and by centrifugation. The germs are then washed with PBS in order to remove the residues of culture medium.
- PBS bioMérieux
- the washed bacterial pellet is suspended in distilled water and is subjected to vigorous stirring. This suspension is centrifuged at 18,000 x g for 30 min. A certain volume of 25% (w / v) N-Lauroyl Sarkosine is added to the collected supernatant so that the final concentration of Sarkosyl is 0.1% (w / v).
- the fraction is placed in a dialysis hose (Spectrum, cutoff threshold 10,000 daltons) and dialyzed against 10 volumes of 50 mM Tris-HCl buffer pH 8.0 containing 0.15M NaCl, 10 mM EDTA, 0.1% Sarkosyl.
- Sepharose 4B (Pharmacia) is prepared on which human lactoferrin (Sigma) has been immobilized.
- the grafting of lactoferrin onto Sepharose 4B CNBr resin is carried out according to the manufacturer's recommendations.
- the ligand density is approximately 5 mg of lactoferrin per ml of gel. The mixture is incubated overnight at 4 ° C with rotary agitation.
- the gel is packaged in a 10 ml column; after decantation, the gel is washed with approximately 20 column volumes of buffer A (50 mM Tris-HCl pH 8.0 containing 10 mM EDTA, 0.1% Sarkosyl, 100 ⁇ M PMSF (phenyl methyl sulfonyl fluoride Sigma)) containing NaCl 0 , 15M, then approximately 6 5 column volumes of buffer A containing 0.5M NaCl, finally with approximately 6 column volumes of buffer A containing IM NaCl.
- buffer A 50 mM Tris-HCl pH 8.0 containing 10 mM EDTA, 0.1% Sarkosyl, 100 ⁇ M PMSF (phenyl methyl sulfonyl fluoride Sigma)
- the elution is carried out by applying to column 1 Q the 50 mM Tris-HCl buffer pH 8.0 containing 10 mM EDTA, 0.05% Sarkosyl, 100 ⁇ M PMSF and a gradient of guanidine HCl from 0 to 2M.
- the fractions eluted in the guanidine • 1 range from 0.75 to 2M are pooled. This preparation is dialyzed against the 50 mM Tris-HCl buffer pH 8.0 and concentrated by rotary evaporation under vacuum.
- the gel was stained with Coomassie blue.
- This staining comprises several steps: (1) fixing step: incubation of the gel in a solution of methanol (50 ml), acetic acid (25 ml), trichloroacetic acid (25 ml) and distilled water (900 ml); (2) coloring step: incubation of the gel in a mixture of methanol: acetic acid: water (30:10:60) containing Coomassie blue R250 0.25% (w / v); (3) stage of discoloration in methanol: acetic acid: water (30:10:60).
- column A this coloration reveals a certain number of bands, none being revealed around 100 kD.
- the preparation obtained was analyzed by the staining method with silver nitrate.
- column B the revelation with silver nitrate made it possible to highlight two additional bands, not revealed by the staining with Coomassie blue. However, among these bands, it was not possible to indicate whether one of them corresponded to the lactoferrin receptor.
- An SDS-PAGE gel is prepared as above and, after electrophoresis, transferred to nitrocellulose.
- Nitrocellulose is saturated in a blocking buffer (milk skimmed 1% (w / v), NaCl 0.9% (w / v) in 50 mM Tris-HCl pH 8), then incubated in a solution of antibodies against N. meningitidis transferrin receptor (25 ⁇ g IgG / ml in blocking buffer) for 1 hour at 37 ° C under stirring, then washed 3 times with blocking buffer and then incubated with a second antibody (anti-species of the first) conjugated to peroxidase. Nitrocellulose is finally revealed with a substrate which precipitates peroxidase: 4-chloro-1-naphthol in the presence of H2O2.
- Example 2 Pharmaceutical composition intended for oral administration.
- the 98 or 70 kD protein capable of being obtained as in Example 1 can be encapsulated alone or in the presence of other H. pylori proteins in gelatin capsules in order to protect the antigen against degradation by the juice. gastric or administered in the presence of sodium bicarbonate.
- Such formulations have already been used for pharmaceutical compositions (Black et al, Dev. Biol. Stand. (1983) 53).
- the protein can also be encapsulated in PLGA microspheres (copolymers of glycolic acid and lactic acid) according to the protocol described elsewhere (Eldridge et al, Curr. Top. Microbiol. Immunol. (1989) 146: 59).
- the protein can also be included in liposomes prepared according to conventional methods widely described ("Liposomes: a practical approach, ed. RRC New, D. Rickwood & BD Hames, 1990, Oxford University 5- Press, ISBN 0-19-963077- 1).
- the amount of protein administered to humans by the oral route is of the order of 1 to 10 mg per dose, and at least 10. 3 doses of 4 weeks apart are recommended.
- Example 3 Pharmaceutical composition intended for parenteral administration.
- the protein of 98 kD or 70 obtainable as in Example 1, is adsorbed on gel "alumina quite conventional.
- the protein solution at 1 mg / ml in a buffer whose pH is around 6.5 is contacted for 1 hour with
- the final composition of the preparation is as follows: a protein according to the invention 50 ⁇ g / ml, Al +++ 250 ⁇ g / ml, merthiolate 1/1000, all in PBS.
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Gastroenterology & Hepatology (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- Genetics & Genomics (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Communicable Diseases (AREA)
- Oncology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Peptides Or Proteins (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR1995/001317 WO1997013784A1 (fr) | 1995-10-09 | 1995-10-09 | Recepteur lactoferrine d'helicobacter |
| AU36579/95A AU3657995A (en) | 1995-10-09 | 1995-10-09 | Helicobacter lactoferrin receptor |
| US08/860,397 US6086893A (en) | 1995-10-09 | 1995-10-09 | Helicobacter lactoferrin receptor |
| EP95934192A EP0797585A1 (fr) | 1995-10-09 | 1995-10-09 | Recepteur lactoferrine d'helicobacter |
| JP9514751A JPH11502418A (ja) | 1995-10-09 | 1995-10-09 | ヘリコバクターのラクトフェリン受容体 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR1995/001317 WO1997013784A1 (fr) | 1995-10-09 | 1995-10-09 | Recepteur lactoferrine d'helicobacter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997013784A1 true WO1997013784A1 (fr) | 1997-04-17 |
Family
ID=9475853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1995/001317 Ceased WO1997013784A1 (fr) | 1995-10-09 | 1995-10-09 | Recepteur lactoferrine d'helicobacter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6086893A (fr) |
| EP (1) | EP0797585A1 (fr) |
| JP (1) | JPH11502418A (fr) |
| AU (1) | AU3657995A (fr) |
| WO (1) | WO1997013784A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998042189A1 (fr) * | 1997-03-26 | 1998-10-01 | Avant Immunotherapeutics, Inc. | POLYPEPTIDES IMMUNO REACTIFS VIS A VIS DES ANTISERUMS POLYGONAUX DU $i(H. PYLORI) |
| WO2000029432A1 (fr) * | 1998-11-17 | 2000-05-25 | Provalis Uk Limited | Antigene d'helicobacter pylori |
| US6086893A (en) * | 1995-10-09 | 2000-07-11 | Pasteur Merieux Serums & Vaccins | Helicobacter lactoferrin receptor |
| WO2001092336A1 (fr) * | 2000-05-29 | 2001-12-06 | A+ Science Invest Ab | Polypeptides lactoferrine de h. pylori et compositions de vaccin a base de ceux-ci |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6465207B1 (en) * | 2000-11-03 | 2002-10-15 | Cytologix Corporation | Silver-based staining processes employing non-gelling gelatin |
| FR2820424B1 (fr) * | 2001-02-05 | 2004-01-02 | Merieux Oravax | Procede de purification de alpa |
| US7938676B1 (en) * | 2009-10-30 | 2011-05-10 | Leviton Mfg. Co. | Receptacle with antenna |
| US9275103B2 (en) | 2013-02-28 | 2016-03-01 | International Business Machines Corporation | Optimization of JOIN queries for related data |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993018150A1 (fr) * | 1992-03-02 | 1993-09-16 | Biocine S.P.A. | Proteines d'helicobacter pylori utiles pour des vaccins et des diagnostics |
| FR2724936A1 (fr) * | 1994-09-22 | 1996-03-29 | Pasteur Merieux Serums Vacc | Recepteur lactoferrine d'helicobacter |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4882271A (en) * | 1988-03-10 | 1989-11-21 | Baylor College Of Medicine | Process for preparation of high molecular weight cell-associated protein of campylobacter pylori and use for serological detection of campylobacter pylori infection |
| GB2223756A (en) * | 1988-09-29 | 1990-04-18 | Health Lab Service Board | Protein purification process |
| DE69133334T2 (de) * | 1990-08-23 | 2004-05-13 | University Of North Carolina At Chapel Hill | Transferrin bindende proteine aus neisseria-gonorrhoeae und neisseria-meningitidis |
| US5567594A (en) * | 1991-04-26 | 1996-10-22 | Enteron, L.P. | Methods and compositions for the detection and treatment of diseases associated with antigens of microorganisms |
| US5262156A (en) * | 1991-08-12 | 1993-11-16 | Hycor Biomedical, Inc. | Antigenic compositions and their use for the detection of Helicobacter pylori |
| MX9301706A (es) * | 1992-04-13 | 1994-05-31 | Oravax Inc | Composicion de vacuna para el tratamiento de la infeccion por helicobacter. |
| US5420014A (en) * | 1992-04-30 | 1995-05-30 | Auspharm International Ltd. | Rapid in vitro test for helicobacter pylori using saliva |
| FR2692592B1 (fr) * | 1992-06-19 | 1995-03-31 | Pasteur Merieux Serums Vacc | Fragments d'ADN codant pour les sous-unités du récepteur de la transferrine de Neisseria meningitidis et procédés les exprimant. |
| US5610060A (en) * | 1994-06-24 | 1997-03-11 | The United States Of America As Represented By The Department Of Health And Human Services | Isolated Helicobacter hepaticus |
| US5527678A (en) * | 1994-10-21 | 1996-06-18 | Vanderbilt University | CagB and CagC genes of helicobacter pylori and related compositions |
| EP0797585A1 (fr) * | 1995-10-09 | 1997-10-01 | Pasteur Merieux Serums Et Vaccins | Recepteur lactoferrine d'helicobacter |
-
1995
- 1995-10-09 EP EP95934192A patent/EP0797585A1/fr not_active Withdrawn
- 1995-10-09 AU AU36579/95A patent/AU3657995A/en not_active Abandoned
- 1995-10-09 WO PCT/FR1995/001317 patent/WO1997013784A1/fr not_active Ceased
- 1995-10-09 US US08/860,397 patent/US6086893A/en not_active Expired - Fee Related
- 1995-10-09 JP JP9514751A patent/JPH11502418A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993018150A1 (fr) * | 1992-03-02 | 1993-09-16 | Biocine S.P.A. | Proteines d'helicobacter pylori utiles pour des vaccins et des diagnostics |
| FR2724936A1 (fr) * | 1994-09-22 | 1996-03-29 | Pasteur Merieux Serums Vacc | Recepteur lactoferrine d'helicobacter |
Non-Patent Citations (6)
| Title |
|---|
| D.S. ILLINGWORTH ET AL.: "The effect of iron limitation on the composition of the outer membrane proteins of Helicobacter pylori.", SOMED : THE IVTH INTERMATIONAL WORKSHOP ON CAMPYLOBACTER, HELICOBACTER AND RELATED ORGANISMS, vol. 4 {special issue}, 1991, SYDNEY, AU, pages s134, XP000578513 * |
| E.J. DIAL ET AL.: "Antimicrobial properties of Lactoferrin which limit Helicobacter pylori (HP) growth.", GASTROENTEROLOGY, 96TH ANNUAL MEETING OF THE AMERICAN GASTROENTEROLOGICAL ASSOCIATION AND THE DIGESTICE DISEASE WEEK, vol. 110, no. 4 supplement, April 1996 (1996-04-01), SAN FRANCISCO, USA, pages a95, XP002010289 * |
| K. NAKAO ET AL.: "Helicobacter pylori infection and lactoferrin level in gastric mucosa as a marker of gastric inflammation.", GASTROENTEROLOGY, 96TH ANNUAL MEETING OF THE AMERICAN GASTROENTEROLOGICAL ASSOCIATION AND THE DIGESTIVE DISEASE WEEK, vol. 110, no. 4 supplement, April 1996 (1996-04-01), SAN FANCISCO, CALIFORNIA, USA., pages a206, XP002010287 * |
| M-O. HUSSON ET AL.: "Iron acquisition by Helicobacter pylori: Importance of Human lactoferrin", INFECTION AND IMMUNITY, vol. 61, no. 6, June 1993 (1993-06-01), pages 2694 - 269, XP000577086 * |
| S. MIEHLKE ET AL.: "Direct antibacterial activity of recombinant human lactoferrin against helicobacter pylori.", GASTROENTEROLOGY, 96TH ANNUAL MEETING OF THE AMERICAN GASTROENTEROLOGICAL ASSOCIATION AND THE DIGESTIVE DISEASE WEEK, vol. 110, no. 4 supplement, April 1996 (1996-04-01), SAN FRANCISCO, CALIFORNIA, USA, pages a196, XP002010288 * |
| T.L. COVER ET AL.: "Purification and characterization of the vacuolating toxin from Helicobacter pylori", THE JOURNAL OF BIOLOGICAL CHEMISTRY, vol. 267, no. 15, 25 May 1992 (1992-05-25), pages 10570 - 10575, XP000578023 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6086893A (en) * | 1995-10-09 | 2000-07-11 | Pasteur Merieux Serums & Vaccins | Helicobacter lactoferrin receptor |
| WO1998042189A1 (fr) * | 1997-03-26 | 1998-10-01 | Avant Immunotherapeutics, Inc. | POLYPEPTIDES IMMUNO REACTIFS VIS A VIS DES ANTISERUMS POLYGONAUX DU $i(H. PYLORI) |
| WO2000029432A1 (fr) * | 1998-11-17 | 2000-05-25 | Provalis Uk Limited | Antigene d'helicobacter pylori |
| WO2001092336A1 (fr) * | 2000-05-29 | 2001-12-06 | A+ Science Invest Ab | Polypeptides lactoferrine de h. pylori et compositions de vaccin a base de ceux-ci |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11502418A (ja) | 1999-03-02 |
| AU3657995A (en) | 1997-04-30 |
| US6086893A (en) | 2000-07-11 |
| EP0797585A1 (fr) | 1997-10-01 |
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