DE10143647A1 - New DNA sequences encoding antibody variable regions, useful for preparation of polypeptides for treatment, prevention and diagnosis of prion diseases - Google Patents

New DNA sequences encoding antibody variable regions, useful for preparation of polypeptides for treatment, prevention and diagnosis of prion diseases

Info

Publication number
DE10143647A1
DE10143647A1 DE2001143647 DE10143647A DE10143647A1 DE 10143647 A1 DE10143647 A1 DE 10143647A1 DE 2001143647 DE2001143647 DE 2001143647 DE 10143647 A DE10143647 A DE 10143647A DE 10143647 A1 DE10143647 A1 DE 10143647A1
Authority
DE
Germany
Prior art keywords
polypeptides
prp
dna sequences
diagnosis
prevention
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Withdrawn
Application number
DE2001143647
Other languages
German (de)
Inventor
Markus Moser
Bruno Oesch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prionics AG
Original Assignee
Prionics AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Prionics AG filed Critical Prionics AG
Priority to DE2001143647 priority Critical patent/DE10143647A1/en
Priority to PCT/EP2002/009370 priority patent/WO2003025181A2/en
Priority to EP02772185A priority patent/EP1423520A2/en
Publication of DE10143647A1 publication Critical patent/DE10143647A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K16/00Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/505Medicinal preparations containing antigens or antibodies comprising antibodies

Abstract

A DNA sequence (I) that encodes the variable region of an antibody (Ab) that binds to prion protein (PrP) contains at least one of four fully defined 330 or 324 base pair sequences given in the specification, or their fragments, that encode a polypeptide (II) able to bind PrP, is new. An Independent claim is also included for a polypeptide (II) having at least one region that: (a) binds PrP; and (b) is derived from (I), but excluding polypeptides that are identical with a chain from antibodies 6H4 and 15B3.

Description

Die Erfindung betrifft DNA-Sequenzen, die jeweils für variable Bereiche zweier unterschiedlicher, an PrP bindende Antikörper codieren. The invention relates to DNA sequences, each for variable regions of two encode different antibodies that bind to PrP.

Weiterhin betrifft die Erfindung Polypeptide, die ausgehend von den DNA- Sequenzen hergestellte, PrP-bindende Peptidbereiche aufweisen. The invention further relates to polypeptides which, starting from the DNA Sequences produced, PrP-binding peptide regions.

Für die Behandlung von Prionenerkrankungenn werden unterschiedliche Substanzen vorgeschlagen, wie z. B. Congo-Rot, Amphothericin, Pentosan Sulfat oder auch β-sheet brechende Peptide. Alle genannten Substanzen sind relativ unspezifisch und haben bislang den klinischen Verlauf höchstens verlangsamen, nicht aber aufhalten können. Different are used for the treatment of prion diseases Substances proposed, such as B. Congo red, amphothericin, pentosan sulfate or also β-sheet breaking peptides. All of the substances mentioned are relative unspecific and so far have at most slowed the clinical course, but cannot stop.

Antikörper gegen PrP sind dagegen spezifisch und erlauben weiterhin auch einen diagnostischen und präventiven Einsatz. Antibodies against PrP, on the other hand, are specific and continue to allow one diagnostic and preventive use.

Eine Optimierung herkömmlicher Antikörper für bestimmte Zwecke ist allerdings relativ schwierig. However, there is an optimization of conventional antibodies for certain purposes relatively difficult.

Aufgabe der Erfindung ist, die Herstellung und Optimierung von Polypeptiden, die an PrP binden, zu erleichtern. The object of the invention is the production and optimization of polypeptides, that bind to PrP.

Dies ist möglich mit den folgenden, erfindungsgemäßen DNA-Sequenzen nach Anspruch 1: SEQ1

SEQ2

SEQ3



SEQ4

This is possible with the following DNA sequences according to the invention according to claim 1: SEQ1

SEQ 2

SEQ3



SEQ4

Die Erfindung ist nicht auf die in SEQ1-SEQ4 angegebenen DNA-Sequenzen beschränkt, sondern umfaßt auch damit homologe bzw. abgewandelte Sequenzen, solange auf Basis dieser Sequenzen Peptide bzw. Peptidabschnitte herstellbar sind, die an PrP binden. The invention is not based on the DNA sequences given in SEQ1-SEQ4 limited, but also includes homologous or modified sequences, as long as peptides or peptide sections can be produced on the basis of these sequences are that bind to PrP.

Die Ermittlung der erfindungsgemäßen DNA-Sequenzen erfolgte ausgehend von zwei in der WO 98/37210 beschriebenen und dort mit 6H4 und 15B3 bezeichneten Antikörpern, die an unterschiedliche, in der WO 98/37210 spezifizierte Epitope auf dem Prionprotein binden. Insbesondere der Antikörper 6H4 könnte interessante, therapeutische Möglichkeiten eröffnen, da er an der Grenzfläche zwischen Prionproteindimeren bindet (Knaus et al.: "Nature Structural Biology", Volume 8, Seite 770; 2001) und im Zellkulturexperiment eine Prioneninfektion auflösen (Enari et al.: "PNAS", Vol. 98, Seiten 9295; 2001) sowie im Maus- Experiment eine Infektion verhindern kann (Heppner et. al.: "Science", Vol. 239, Nr. 5536 (im Druck)). The DNA sequences according to the invention were determined on the basis of two described in WO 98/37210 and there with 6H4 and 15B3 designated antibodies to different, specified in WO 98/37210 Bind epitopes on the prion protein. In particular, the antibody 6H4 could interesting therapeutic opportunities open up because it is at the interface binds between prion protein dimers (Knaus et al .: "Nature Structural Biology", Volume 8, page 770; 2001) and a prion infection in the cell culture experiment dissolve (Enari et al .: "PNAS", Vol. 98, pages 9295; 2001) and in the mouse Experiment can prevent infection (Heppner et. Al .: "Science", Vol. 239, No. 5536 (in press)).

Die Sequenzen wurden aus 6H4- und 15B3-Hybridoma-Zellen gewonnen, wie von Heppner et. al. in "Science", Vol. 239, Nr. 5536 (im Druck) beschrieben. The sequences were obtained from 6H4 and 15B3 hybridoma cells as described by Heppner et. al. in "Science", Vol. 239, No. 5536 (in press).

Die erfindungsgemäßen Sequenzen SEQ1 und SEQ2 codieren jeweils für variable Bereiche der Heavy- bzw- Light-Chain des Antikörpers 6H4. The sequences SEQ1 and SEQ2 each code for variable Areas of the heavy or light chain of the 6H4 antibody.

SEQ3 und SEQ4 codieren jeweils für variable Bereiche der Heavy- bzw. Light- Chain des Antikörpers 15B3. SEQ3 and SEQ4 each code for variable areas of heavy and light Chain of the 15B3 antibody.

Antikörper sind Immunglobuline, die aus zwei Proteinketten aufgebaut sind, die als Heavy- bzw. Light-Chain bezeichnet werden. Beide Ketten weisen bei den meisten Antikörpern übereinstimmende, konservierte Sequenzabschnitte auf. Daneben sind jeweils N-terminal auf der Heavy- und der Light-Chain variable Bereiche mit einer Länge von ca. 110 Aminosäuren enthalten, die für die spezifische Bindung des jeweiligen Antikörpers an ein bestimmtes Antigen verantwortlich sind. Antibodies are immunoglobulins that are made up of two protein chains that be called heavy or light chain. Both chains have the most antibodies match conserved sequence segments. In addition, N-terminals on the heavy and light chains are variable Areas with a length of approximately 110 amino acids contain the specific Binding of the respective antibody to a specific antigen responsible are.

Ausgehend von den erfindungsgemäßen DNA-Sequenzen lassen sich in einfacher Weise Polypeptide herstellen, die PrP binden bzw. mindestens einen PrP- bindenden Teilbereich aufweisen. Starting from the DNA sequences according to the invention can be more easily How to produce polypeptides that bind PrP or at least one PrP have binding sub-area.

Die erfindungsgemäßen Polypeptide haben dabei gegenüber den bislang zur Verfügung stehenden Antikörpern den Vorteil, daß ihr Design gezielt auf einen bestimmten Zweck abgestimmt werden kann. The polypeptides according to the invention have been used up to now Available antibodies have the advantage that their design is targeted at one specific purpose can be coordinated.

Denkbar ist z. B. die Herstellung von Polypeptiden, die neben den von den DNA- Sequenzen codierten Bereichen weitere Bereiche mit speziellen Eigenschaften aufweisen. It is conceivable, for. B. the production of polypeptides which, in addition to the DNA Sequences encoded areas other areas with special properties exhibit.

Interessant ist in diesem Zusammenhang z. B. eine Optimierung im Hinblick auf die Überwindung der Blut-Hirn-Schranke, die man mit der Erfindung mit vielen unterschiedlichen Konstrukten auf einfache Weise durchführen kann. It is interesting in this context, for. B. an optimization with regard to overcoming the blood-brain barrier, which one with the invention with many can perform different constructs in a simple manner.

Außerdem lassen sich in einem erfindungsgemäßen Polypeptid selbstverständlich auch immunologische Eigenschaften unterschiedlicher Antikörper verbinden und dann entsprechend in therapeutischen oder diagnostischen Anwendungen testen. In diesem Zusammenhang ist z. B. eine Humanisierung von besonderem Interesse, als deren Ergebnis ein Antikörper entsteht, der im menschlichen Körper keine Abwehrreaktion hervorruft. Zur Humanisierung müssen lediglich eine oder mehrere der erfindungsgemäßen DNA-Sequenzen anstelle der variablen Region eines humanen Antikörpers eingefügt werden und der neue Antikörper mit herkömmlichen Methoden hergestellt werden. In addition, a polypeptide according to the invention can of course be used also combine immunological properties of different antibodies and then test accordingly in therapeutic or diagnostic applications. In this context, e.g. B. a humanization of particular interest, as a result, an antibody is produced that does not exist in the human body Defense response. Only one or several of the DNA sequences according to the invention instead of the variable region one human antibody are inserted and the new antibody with conventional methods.

Weiterhin interessant und mit der Erfindung leicht umsetzbar sind mögliche Modifikationen der Bindungseigenschaft der Polypeptide durch z. B. Austauschmodifikationen einzelner Aminosäuren und ganzer Bereiche oder auch die Kombination unterschiedlicher, erfindungsgemäßer DNA-Sequenzen oder Sequenzbereiche. Further interesting and possible with the invention are easy to implement Modifications of the binding property of the polypeptides by e.g. B. Exchange modifications of individual amino acids and entire areas or also the Combination of different DNA sequences or sequence regions according to the invention.

Aus obigem ergibt sich, daß die erfindungsgemäßen Polypeptide eine große Bandbreite abdecken, die von Modifikationen der bekannten Antikörper bis hin zu Peptidfragmenten reicht, die nur eine von einer oder mehreren der DNA- Sequenzen abgeleitete Peptidsequenz umfassen. It follows from the above that the polypeptides of the invention are large Covering the spectrum, from modifications of the known antibodies to to peptide fragments that only one of one or more of the DNA Sequences derived peptide sequence include.

Wie schon angesprochen, können die erfindungsgemäß hergestellten Polypeptide bei der Diagnose, der Prävention und der Therapie von Prionerkrankungen zum Einsatz kommen. SEQUENZPROTOKOLL





As already mentioned, the polypeptides produced according to the invention can be used in the diagnosis, prevention and therapy of prion diseases. SEQUENCE LISTING





Claims (3)

1. DNA-Sequenz, codierend für variable Bereiche von Antikörpern, die an PrP binden, wobei die DNA-Sequenz mindestens eine der unter SEQ1 bis SEQ4 angegebenen Sequenzen oder mindestens einen Teilbereich dieser Sequenzen enthält und für Polypeptide codiert, die PrP binden. 1. DNA sequence coding for variable regions of antibodies which are linked to PrP bind, wherein the DNA sequence at least one of SEQ1 to SEQ4 specified sequences or at least a portion of these sequences contains and encodes polypeptides that bind PrP. 2. Polypeptid mit mindestens einem Bereich, der PrP bindet, wobei der PrP- bindende Bereich aus einer der Sequenzen gemäß Anspruch 1 ableitbar ist, ausgenommen Polypeptide, die mit einer Kette der Antikörper 6H4 oder 15B3 identisch sind. 2. Polypeptide with at least one region that binds PrP, the PrP- binding region can be derived from one of the sequences according to claim 1, except polypeptides that are linked by a chain of antibodies 6H4 or 15B3 are identical. 3. Verwendung der Polypeptide gemäß Anspruch 2 zur Therapie, Diagnose oder Prävention von Prionerkrankungen. 3. Use of the polypeptides according to claim 2 for therapy, diagnosis or Prevention of prion diseases.
DE2001143647 2001-09-05 2001-09-05 New DNA sequences encoding antibody variable regions, useful for preparation of polypeptides for treatment, prevention and diagnosis of prion diseases Withdrawn DE10143647A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2001143647 DE10143647A1 (en) 2001-09-05 2001-09-05 New DNA sequences encoding antibody variable regions, useful for preparation of polypeptides for treatment, prevention and diagnosis of prion diseases
PCT/EP2002/009370 WO2003025181A2 (en) 2001-09-05 2002-08-22 Dna sequences that encode variable regions of antibodies that bind to the prion protein (prp), and prp-binding polypeptides
EP02772185A EP1423520A2 (en) 2001-09-05 2002-08-22 Dna sequences that encode variable regions of antibodies that bind to the prion protein (prp), and prp-binding polypeptides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2001143647 DE10143647A1 (en) 2001-09-05 2001-09-05 New DNA sequences encoding antibody variable regions, useful for preparation of polypeptides for treatment, prevention and diagnosis of prion diseases

Publications (1)

Publication Number Publication Date
DE10143647A1 true DE10143647A1 (en) 2003-03-27

Family

ID=7697895

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2001143647 Withdrawn DE10143647A1 (en) 2001-09-05 2001-09-05 New DNA sequences encoding antibody variable regions, useful for preparation of polypeptides for treatment, prevention and diagnosis of prion diseases

Country Status (3)

Country Link
EP (1) EP1423520A2 (en)
DE (1) DE10143647A1 (en)
WO (1) WO2003025181A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0227886D0 (en) * 2002-11-29 2003-01-08 Medical Res Council Prion inhibition

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998037210A1 (en) * 1997-02-21 1998-08-27 KANTON ZÜRICH vertreten durch DIE ERZIEHUNGSDIREKTION Immunological detection of prions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998037210A1 (en) * 1997-02-21 1998-08-27 KANTON ZÜRICH vertreten durch DIE ERZIEHUNGSDIREKTION Immunological detection of prions

Also Published As

Publication number Publication date
EP1423520A2 (en) 2004-06-02
WO2003025181A2 (en) 2003-03-27
WO2003025181A3 (en) 2003-09-25

Similar Documents

Publication Publication Date Title
DE60226036T2 (en) ANTIBODY THAT DETERMINES THE GM1-GANGLIOSID-BOUND AMYLOID-B PROTEIN AND DNA THAT CODES FOR THIS ANTIBODY
DE69605181T3 (en) ANTIBODIES TO CD30 PREVENT PROTEOLYTIC CLEAVAGE AND DELIVERY OF MEMBRANEOUS CD30 ANTIGEN
DE60108111T2 (en) SYNTHETIC IMMUNOGENS, HOWEVER, ARE NOT AMYLOIDOGENEOUS PEPTIDES HOMOLOGOUS TO AMYLOID BETA AND THEIR USE FOR THE INDUCTION OF AN IMMUNE RESPONSE AGAINST AMYLOID BETA AND AMYLOIDAGGREGATES
EP3318272B1 (en) Cgrp antibodies
DE602004009705T2 (en) Methods of prevention and treatment of Alzheimer's disease
DE69532940T2 (en) A method for producing modified immunoglobulins having reduced immunogenicity of mouse antibody variable domains, compositions containing the same
DE69433422T2 (en) MONOCLONAL ANTI-HIV ANTIBODY
AT506535B1 (en) VACCINE CONTAINING ALPHA SYNUCLEIN MIMOTOPES BASED ON PEPTIDES
AT508638B1 (en) USE OF PEPTIDES AND POLYPEPTIDES FOR THE TREATMENT AND / OR PREVENTION OF SYNNUCLEOPATHIES
EP1600460B1 (en) Use of an active substance that binds to CD28 for producing a pharmaceutical composition for treatment of B-CLL
CN107847595A (en) Specificity is directed to the antibody and its application method of hyperphosphorylated Tau protein
DE19725586A1 (en) Process for ex vivo immunization using heterologous intact bispecific and / or trispecific antibodies
DE10027695A1 (en) Vaccines against conformation-dependent or non-peptide antigens, based on DNA encoding peptide which mimics the antigen, useful e.g. as antitumor vaccines
DE69938451T2 (en) FAS PEPTIDES AND ANTIBODIES FOR MODULATING APOPTOSIS
EP2356144A2 (en) Composition for producing anti-amyloid beta peptide antibodies with d-peptides
WO2019008129A1 (en) Biological binding molecule
EP3346273B1 (en) Novel d-enantiomeric peptides derived from d3 and their use
EP1451224A2 (en) Peptide or protein containing a c'-d loop of the cd28 receptor family
DE69735533T2 (en) Soluble polypeptides consisting of the first coiled-coil domain of human and mouse epimorphin
EP1287036A1 (en) Trivalent antibody constructs having variable regions that are stabilized by disulfide bridges
DE10143647A1 (en) New DNA sequences encoding antibody variable regions, useful for preparation of polypeptides for treatment, prevention and diagnosis of prion diseases
DE102010019336A1 (en) Agent for the treatment of Alzheimer's dementia
DE10210427A1 (en) Human monoclonal antibody
DE60014372T2 (en) POLYPEPTIDE-CONTAINING COMPOSITIONS MADE BY THE USE OF MATRICES IN THE COILED COIL SHAPE AND THEIR USE
EP1307490A1 (en) F v? constructs with an influenceable affinity for a substance that is to be linked

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8130 Withdrawal