ES2537001T3 - Anticuerpos específicos para protofibrillas solubles de péptido beta amiloide y usos de los mismos - Google Patents
Anticuerpos específicos para protofibrillas solubles de péptido beta amiloide y usos de los mismos Download PDFInfo
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- ES2537001T3 ES2537001T3 ES05753672.4T ES05753672T ES2537001T3 ES 2537001 T3 ES2537001 T3 ES 2537001T3 ES 05753672 T ES05753672 T ES 05753672T ES 2537001 T3 ES2537001 T3 ES 2537001T3
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- protofibrils
- antibodies specific
- amyloid beta
- beta peptide
- peptide
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- 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
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4711—Alzheimer's disease; Amyloid plaque core protein
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
- C07K2317/24—Immunoglobulins specific features characterized by taxonomic origin containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/28—Neurological disorders
- G01N2800/2814—Dementia; Cognitive disorders
- G01N2800/2821—Alzheimer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/38—Pediatrics
- G01N2800/385—Congenital anomalies
- G01N2800/387—Down syndrome; Trisomy 18; Trisomy 13
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Genetics & Genomics (AREA)
- Biophysics (AREA)
- Neurosurgery (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Immunology (AREA)
- Gastroenterology & Hepatology (AREA)
- Zoology (AREA)
- Toxicology (AREA)
- Veterinary Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Psychiatry (AREA)
- Hospice & Palliative Care (AREA)
- Peptides Or Proteins (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Abstract
Un anticuerpo o fragmento del mismo que se une a protofibrillas de Aß42 de tipo silvestre y a protofibrillas de Aß42 con baja reactividad cruzada del monómero Aß42 donde dicho anticuerpo o fragmento del mismo se puede obtener mediante el uso de protofibrillas de Aß42Arc o Aß42wt con una pureza superior al 95 % para inmunización y detección selectiva.
Description
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E05753672
14-05-2015
El AcMo 258 se unió a las protofibrillas wtAβ42 y un poco menos a las protofibrillas Aβ42Arc. No se observó unión a monómeros de wtAβ40. La ligera de unión a fibrillas wtAβ42 se debe probablemente a una ligera contaminación con protofibrillas wtAβ42 (véase la Figura 1 D).
Los siguientes ejemplos se proporcionan para ilustración y no están destinados a limitar la invención a los ejemplos específicos proporcionados.
Las formas silvestre o mutante sintéticas humanas de los péptidos Aβ1-42 o Aβ1-40 se adquirieron en Polypeptide Laboratories GmbH. Los péptidos fueron sintetizados mediante un procedimiento de síntesis de péptidos en fase sólida estándar. Los péptidos se purificaron posteriormente con RP-HPLC hasta una pureza en el intervalo de 90-95 %. También es posible usar proveedores alternativos que producen péptidos Aß con pureza similar.
Síntesis de monómeros Aß1-40 humanos de tipo silvestre
Un péptido sintético wtAβ1-40 se disolvió en 1 volumen de NaOH 10 mM pH> 10, y 1 volumen de 2 x PBS frío (pH 78) hasta una concentración de 50 uM. La preparación del monómero wtAβ1-40 se centrifugó a 17. 900 g a + 4 °C durante 5 minutos antes del análisis (Figura 1).
Síntesis de protofibrillas Aβ1-42 humanas de tipo silvestre
Un péptido sintético wtAβ1-42 se disolvió en 9 volúmenes de NaOH 10 mM pH> 10, se agitó en vórtex durante 2 minutos y se diluyó con 1 volumen de 10 x PBS (pH 7-8). La concentración final del péptido era, en este punto, 443 uM. El péptido se incubó adicionalmente durante la noche a 37 °C. Después de la incubación durante la noche, el péptido se diluyó adicionalmente con PBS a 50 uM. La muestra se centrifugó durante 17. 900 x g durante 5 minutos antes del análisis y la inmunización.
Síntesis de protofibrillas Aβ1-42Arc humanas
Un péptido sintético Aβ1-42Arc (E22G) se disolvió en 1 volumen de NaOH 10 mM pH> 10, y 1 volumen de 2 x PBS frío (pH 7-8) hasta una concentración final del péptido de 50 uM. Las protofibrillas Aβ1-42Arc se formaron inmediatamente y las protofibrillas Aβ1-42Arc se estabilizaron manteniendo la solución a 0-4 °C antes del análisis o la inmunización. La muestra se centrifugó a 17. 000 xg durante 5 minutos a + 4 °C antes del análisis. Formas alternativas para estabilizar las protofibrillas Aβ1-42Arc eran añadir glicerol hasta una concentración final de 5-50 %
o agregar Tween-20 a una concentración final de 0,6 %.
Síntesis de protofibrillas Aβ1-42 humanas de tipo silvestre
Un péptido sintético wtAβ1-42 se disolvió en 1 volumen de agua destilada doble, se agitó en vórtex durante 2 minutos y se diluyó con 1 volumen de 10 x PBS (pH 7-8) y de nuevo se agitó en vórtex durante 2 minutos. La concentración final del péptido era, en este punto, 50 uM. La preparación de protofibrillas wtAβ1-42 se incubó a 37 °C, durante 48 horas antes del análisis. La muestra se centrifugó a 17.900 x g durante 5 minutos a antes del análisis SEC. Se analizó el sobrenadante después de la centrifugación. No se realizó centrifugación cuando se analizaron 142 preparaciones de fibrillas mediante ELISA o transferencia de puntos.
Análisis de la preparación de Aß mediante cromatografía de exclusión por tamaño (SEC)
Se usó un sistema Merck Hitachi D-7000 HPLC LaChrom, que tiene un detector de diodos de matriz (DAD) modelo L-7455 y una bomba modelo L-7100, para el análisis cromatográfico de preparaciones de protofibrillas en combinación con una columna Superdex 75 PC3. 2 / 30 (Amersham Pharmacia Biotech, Uppsala, Suecia). El sistema cromatográfico separa los monómeros Aß de las protofibrillas, que se eluyen en el volumen vacío de la columna. La columna se equilibró con Na2HPO4·50 mM NaH2PO4(PH 7,4) con NaCl 0,15 M (PBS) y 0,6 % de Tween 20 y se eluyó con el mismo tampón a un caudal de 0,08 ml / min (la presión fue 5-6 bares) a temperatura ambiente (22 °C). Diez (10 ul) de una muestra de 50 uM-100 uM de Aß se sometió análisis utilizando un barrido de longitud de onda entre 200-400 nm. Se añadió Tween-20 a la muestra para dar una concentración final de 0,6 % antes de la cromatografía. Los datos se extrajeron a partir de mediciones a 214 y 280 nm. Áreas de los picos se integraron utilizando el modelo de Merck Hitachi D-7000 Chromatography Data Station Software. La figura 1 muestra cromatogramas del monómero wtAβ1-40, wtAβ1-42 protofibrilla, Aβ1-42Arc protofibrilla y preparaciones de fibrillas wtAβ1-42.
Cada preparación fue esencialmente libre (< 3 %) de otras formas conformacionales contaminantes de Aß excepto la preparación monómero wtAβ1-40 que contenía 6,4 % de protofibrillas (tiempo de elución 12-13 minutos).
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Claims (1)
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Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0401601A SE0401601D0 (sv) | 2004-06-21 | 2004-06-21 | Protofibril specific antibodies and uses thereof |
SE0401601 | 2004-06-21 | ||
PCT/SE2005/000993 WO2005123775A1 (en) | 2004-06-21 | 2005-06-21 | Antibodies specific for soluble amyloid beta peptide protofibrils and uses thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2537001T3 true ES2537001T3 (es) | 2015-06-01 |
Family
ID=32906833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES05753672.4T Active ES2537001T3 (es) | 2004-06-21 | 2005-06-21 | Anticuerpos específicos para protofibrillas solubles de péptido beta amiloide y usos de los mismos |
Country Status (13)
Country | Link |
---|---|
US (4) | US8106164B2 (es) |
EP (1) | EP1781703B1 (es) |
AU (1) | AU2005254928B2 (es) |
CA (1) | CA2570130C (es) |
CY (1) | CY1116776T1 (es) |
DK (1) | DK1781703T3 (es) |
ES (1) | ES2537001T3 (es) |
HU (1) | HUE025628T2 (es) |
PL (1) | PL1781703T3 (es) |
PT (1) | PT1781703E (es) |
SE (1) | SE0401601D0 (es) |
SI (1) | SI1781703T1 (es) |
WO (1) | WO2005123775A1 (es) |
Families Citing this family (65)
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-
2004
- 2004-06-21 SE SE0401601A patent/SE0401601D0/xx unknown
-
2005
- 2005-06-21 EP EP05753672.4A patent/EP1781703B1/en not_active Revoked
- 2005-06-21 HU HUE05753672A patent/HUE025628T2/en unknown
- 2005-06-21 US US11/570,995 patent/US8106164B2/en active Active
- 2005-06-21 CA CA2570130A patent/CA2570130C/en active Active
- 2005-06-21 SI SI200531986T patent/SI1781703T1/sl unknown
- 2005-06-21 AU AU2005254928A patent/AU2005254928B2/en active Active
- 2005-06-21 DK DK05753672.4T patent/DK1781703T3/en active
- 2005-06-21 PL PL05753672T patent/PL1781703T3/pl unknown
- 2005-06-21 WO PCT/SE2005/000993 patent/WO2005123775A1/en active Application Filing
- 2005-06-21 PT PT57536724T patent/PT1781703E/pt unknown
- 2005-06-21 ES ES05753672.4T patent/ES2537001T3/es active Active
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2011
- 2011-12-23 US US13/336,520 patent/US8404459B2/en active Active
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2013
- 2013-02-28 US US13/780,643 patent/US8999936B2/en active Active
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2015
- 2015-02-20 US US14/627,161 patent/US20150307601A1/en not_active Abandoned
- 2015-08-03 CY CY20151100678T patent/CY1116776T1/el unknown
Also Published As
Publication number | Publication date |
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SI1781703T1 (sl) | 2015-08-31 |
EP1781703A1 (en) | 2007-05-09 |
US20150307601A1 (en) | 2015-10-29 |
CY1116776T1 (el) | 2017-03-15 |
US8999936B2 (en) | 2015-04-07 |
AU2005254928A1 (en) | 2005-12-29 |
CA2570130C (en) | 2016-02-23 |
US20130236452A1 (en) | 2013-09-12 |
DK1781703T3 (en) | 2015-06-01 |
CA2570130A1 (en) | 2005-12-29 |
PL1781703T3 (pl) | 2015-10-30 |
HUE025628T2 (en) | 2016-04-28 |
SE0401601D0 (sv) | 2004-06-21 |
US20120230912A1 (en) | 2012-09-13 |
AU2005254928B2 (en) | 2011-11-10 |
US8404459B2 (en) | 2013-03-26 |
WO2005123775A1 (en) | 2005-12-29 |
US8106164B2 (en) | 2012-01-31 |
US20090155246A1 (en) | 2009-06-18 |
EP1781703B1 (en) | 2015-05-06 |
PT1781703E (pt) | 2015-08-24 |
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