Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07K—PEPTIDES
  • C07K17/00—Carrier-bound or immobilised peptides; Preparation thereof
  • C07K17/02—Peptides being immobilised on, or in, an organic carrier
  • C07K17/08—Peptides being immobilised on, or in, an organic carrier the carrier being a synthetic polymer
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K38/00—Medicinal preparations containing peptides
  • A61K38/04—Peptides having up to 20 amino acids in a fully defined sequence; Derivatives thereof
  • A61K38/08—Peptides having 5 to 11 amino acids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K38/00—Medicinal preparations containing peptides
  • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
  • A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
  • A61K38/177—Receptors; Cell surface antigens; Cell surface determinants
  • A61K38/1787—Receptors; Cell surface antigens; Cell surface determinants for neuromediators, e.g. serotonin receptor, dopamine receptor
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
  • B01J20/286—Phases chemically bonded to a substrate, e.g. to silica or to polymers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/30—Processes for preparing, regenerating, or reactivating
  • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
  • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
  • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
  • B01J20/3244—Non-macromolecular compounds
  • B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
  • B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
  • B01J20/3251—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising at least two different types of heteroatoms selected from nitrogen, oxygen or sulphur
• • 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
  • C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
  • C07K14/72—Receptors; Cell surface antigens; Cell surface determinants for hormones
  • C07K14/723—G protein coupled receptor, e.g. TSHR-thyrotropin-receptor, LH/hCG receptor, FSH receptor
• • 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
  • C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07K—PEPTIDES
  • C07K2317/00—Immunoglobulins specific features
  • C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
  • C07K2317/34—Identification of a linear epitope shorter than 20 amino acid residues or of a conformational epitope defined by amino acid residues

Definitions

• the invention pertains to a peptide having a binding affinity an antibody which recognizes an epitope on an ol loop 2 or ⁇ 2 loopl of an adrenoreceptor, an isolated nucleic acid molecule, solid phases for affinity chromatography or solid-phase extraction consisting of organic, inorganic, synthetic polymers or of mixed polymers, a vector comprising a nucleic acid molecule, a host cell comprising the vector, a device for removing immunoglobulins from immunoglobulin-containing fluids on solid phases, a pharmaceutical composition comprising a nucleic acid molecule, a peptide and/or a solid phase of the invention together with a pharmaceutically tolerable carrier, a kit comprising a nucleic acid molecule of the invention, a vector of the invention, a host cell of the invention, as well as an apparatus for chromatography, comprising peptides of the invention.
• AD Alzheimer's disease
• Alois Alzheimer 1864-1915
• AD Alzheimer's disease
• AD Alzheimer's disease .
• CTR computer tomography
• MRT magnetic resonance tomography
• EEG electroencephalography
• MMST mini mental status test
• the disease is a "one-way street" which unavoidably results in a deterioration of the clinical image over several years to end with death.
• the prevalence of the disease is highly age-dependent. Among those of 60 to 70 years of age, it is about 1%, and among those of 70 to 80 years of age, it is as high as about 10%. Since life expectancy of the humans in Germany is continuously increasing, another rise of the number of cases is to be expected.
• AD Alzheimer's disease
• Cholesterol-reducing agents such as statins, also seem to have a favorable influence on the risk of developing AD. At least, patients obtaining cholesterol- reducing agents exhibit a lesser incidence of AD. However, no hard scientific data are available to support this.
• hypotensive agents such as inhibitors of angiotensin converting enzyme (ACE).
• ACE angiotensin converting enzyme
• AD The pathogenesis of AD itself has not yet been finally clarified.
• a number of risk factors have been recognized. These include age, hypertension, high cholesterol levels, overweight, apolipoprotein E4, copper deficiency, certain genetic predispositions, and possibly oxidative stress. The development of the disease is very probably multifactorial.
• pathological molecules are components of physiological structures and processes in the healthy organism. They are considered pathological if they exceed concentration limits, in the plasma or locally in the tissue, intercellular or intracellular. This holds for both dissolved proteins and aggregated molecules (e.g., ⁇ -amyloid in the form of plaque).
• the aggregation or deposit of two different, per se physiological protein molecules in the brain in intercellular or intracellular spaces causes fundamental neuronal functional disorders in signal transmission and the interaction of neurons.
• These proteins are essentially the neurotoxic ⁇ -amyloid peptide (aggregated as a polymer in the form of amyloid plaque), and the Tau protein, a polymer aggregated as neurofibrillary tangles.
• amyloids are evidently involved causally in the development of AD. Thereafter, an increased formation of amyloid- ⁇ 40/42 occurs by enzymatic cleavage of the molecule from the membrane of the nerve cells. This results in a locally increased concentration of single ⁇ -amyloid molecules, ⁇ -amyloid oligomers and its aggregation into amyloid plaques. These plaques disrupt the normal transmission of stimuli by the nerves and communication between the cells. The cleavage of aggregatable ⁇ -amyloids from the precursor molecules is effected by the so-called ⁇ -secretase. The activity of this enzyme is controlled by the ⁇ 2-adrenoceptor.
• the plaques in turn may also result in the generation of neurofibrillary tangles of the Tau protein, which normally is physiologically localized in the axonal tracts of the nerve cells.
• the deposit of these aggregates takes place in a wide variety of cerebral areas. The process of plaque formation proceeds over many years from the beginning to the onset of the disease.
• plaques and neurofibrillary tangles can be visualized well by microscopy in brain sections of dead AD patients and are an important part of diagnostics.
• oxLDL oxidized low density lipoprotein
• Table 1 provides a survey of important pathological molecules.
• Table 1 Survey of pathological molecules of Alzheimer's disease in the blood plasma
• agAAB against GPCR The most extensively studied group of diseases associated with agAAB against GPCR are cardiac diseases.
• myocarditis, dilated cardiomyopathy, peripartum cardiomyopathy, Chagas' disease, and ventricular arrhythmias agAAB against the Bi-AR can be detected in the sera of patients with clinically diagnosed diseases.
• DCM and myocarditis are severe heart disorders, and it has been hypothesized that a chronic myocarditis may develop to a DCM.
• an infection with an enterovirus or others may be the primary etiological agent, but the inflammatory response may have developed to an autoimmune disease.
• the infectious agent may not be detectable, and even the inflammatory response may have declined, however, a chronic progressing heart failure is diagnosed.
• the DCM is characterized by a severe heart failure.
• the idiopathic DCM in which other etiological agents can be excluded, the prevalence of the Bi-adrenergic AAB of up to 80 % is remarkable.
• Myocarditis and DCM are preferentially treated by antagonists of the Bl- adrenergic and renin-angiotensin system and physical rest.
• the therapeutic goal is to reduce cardiac overstimulation and prevent arrhyth- mias
• the therapeutic use of betablockers in reducing adrenergic overstimulation is accompanied by a significant decrease in cardiac death and hospitalization in the patients subject to the study.
• Ventricular arrhythmias are a major cause of sudden death in dilated DCM and ventricular tachycardias have been shown to be strongly related with the detection of agAAB to the Bi- AR.
• DCM chronic myelogenous coronary intervention
• peripartum cardiomyopathy is characterised by a dilation of the left ventricle and may develop into a life threatening disorder. The incidence is about 1 : 1000 in South African women, while the disease is rare among white populations in western countries. The etiology of peripartum cardiomyopathy is largely unknown. By definition it is diagnosed between the last month before and the 4 th month after delivery. Recently, the presence of agAAB against the Bi-AR in all sera of a sample of 10 patients suffering from peripartum cardiomyopathy was shown.
• Chagas' disease is caused by the parasite Trypanosoma cruzi and very common in South America. Among other symptoms, the patients often develop a myocarditis as part of the dysautonomic syndrome that affects the whole cholinergic system. There is strong evidence that the dysautonomic syndrome is caused also by functional AAB against the muscarinic M 2 - acetylcholine receptor. The prevalence of agAAB against the M 2 -receptor ranges from 50-94 %. In Chagas' disease, AAB against the Bi-AR can also be found in about 53 % of the cases. This situation may represent the antigenic mimicry of originally the same antigen from T. cruzi, with a functional antagonism as an epiphenomenon .
• Activation of the B-AR leads to an elevation of cAMP by the activation of adenylate cyclase by stimulating G 5 -proteins in the G-protein trimer.
• agonistic ligand binding to muscarinic and nicotinic acetylcholine receptors inhibits adenylate cyclase by inhibiting G, -proteins.
• this simple pattern has to be extended for the individual receptors.
• a monoclonal anti-Bi- receptor AB that induces apoptosis in rat cardiomyocytes also acts via cAMP and protein kinase A, MAP-kinases, esp. p38-kinase are activated downstream of several GPCRs but also in the signal transduction cascade of inflammatory cytokines.
• agAAB may also have a proinflammatory effect .
• L-type Ca 2+ - channels are not only activated through phosphorylation by protein kinase A, but also directly through subunits of G-proteins.
• the stimulation of Ca 2+ - influx may be a significant pathway for the pathogenetic role of AAB in autoimmune myocarditis and DCM.
• the action potential on rat and human cardiomyocytes is prolonged by the administration of agAAB against the Bi-AR and activates in turn the electrogenic Na + /Ca 2+ -exchanger, resulting in electrical instability of the heart.
• Intracellular calcium overload is also known as a key event of remodelling, as is the Bi-adrenergic stimulation.
• the Bi-AR was crucial for the reorganization of actin mediated by enhanced transcription of the atrial natriuretic factor.
• agAAB The induction of agonistic antibody against the Bl-AR was also performed in rabbits and results in the occurrence of agAAB as well as DCM.
• theapeutical apheresis (immunoadsorption) in patients suffering from DCM.
• the therapeutical apheresis leads to a long lasting decline of the agAAB, a disappearance of activated inflammatory leukocytes from the heart muscle tissue and an increase of essential cardiac functions.
• agAAB diseases which are associated or caused by agAAB preeclampsia and vascular necrotic kidney rejection (agAAB against the Angiotensin-1 receptor or the open angle glaucoma (agAAB against the 62- adrenoceptor.
• WO-A- 02/093174 discloses a method and device for treating AD.
• the method involves the removal of circulating autoantibodies of a biochemical marker of markers, specifically human glial fibrillary acidic protein (GFAP) and glycer- aldehyde-3-phosphate dehydrogenase (GAPDH), in body fluid, preferably blood or a blood product.
• GFAP human glial fibrillary acidic protein
• GPDH glycer- aldehyde-3-phosphate dehydrogenase
• the invention further includes a device or process of immune system modulation effective for autoantibody removal.
• D. M. Walsh et al. discloses in Biochemical Society Transactions (2005) Vol. 33, part 5, PP 1087-1090 that soluble oligomers of A ⁇ are among the earliest effectors of Alzheimer's disease. They report about testing of compounds directed at three prominent amyloid-based therapeutic targets, inhibition of the secretases responsible for A ⁇ production, inhibition of A ⁇ aggregation and immunization against A ⁇ . In each case, compounds capable of reducing oligomer production or antibodies that avidly bind A ⁇ oligomers also ameliorate the synaptotoxic effects of these natural, cell-derived oligomers.
• Norman R. Relkin et al. discloses in Neurobiology of Aging (2008), Febr.20, E- publ. that natural occurring antibodies against BA are able to reduce the BA level in the body, and their intravenious application may improve the brain function in patients with mild AD.
• EP-A-1832600 discloses an invention which relates to nucleic acid molecules encoding peptides which interact with autoantibodies associated with glaucoma, to the peptides themselves, to a pharmaceutical composition comprising said nucleic acid molecules and peptides, and to the use of said peptides - especially in apheresis - for the treatment of glaucoma.
• the peptides represent an epitope which is a part of the extrcallular Ioop2 of the 62 adrenergic receptor.
• WO-A-02/38592 discloses an invention which relates to peptides having a high affinity to immunoglobulins.
• Yanxiang Ni et al. report about activation of ⁇ 2 -adrenergic receptor stimulating ⁇ -secretase activity and accelerating amyloid plaque formation. They report that ⁇ 2 -AR activation can stimulate ⁇ -secretase activity and amyloid plaque formation and speculates that abnormal activation of ⁇ 2 -AR might contribute to A ⁇ accumulation in Alzheimer's disease pathogenesis.
• An object of the invention was to provide a compound which is able to be used in the treatment of AD. Another object was to provide a compound which is able to reduce the 62-adrenoceptor mediated ⁇ -secretase activity in individuals suffering from higher levels of ⁇ -secretase due to auto-antibodies against adrenoreceptor.
• the invention is based on the finding of agonistic autoantibodies (agAAB) directed against the G protein coupled receptors (GPCR), 62 and ⁇ l adrenoceptor (AR), in the blood plasma of patients suffering from diseases caused by an increase of ⁇ -secretase activity, an increased release of ⁇ - amyolid molecules and/or cellular dysfunction of cerebral blood vessel cells, glia cells or neurons.
• agAAB agonistic autoantibodies directed against the G protein coupled receptors
• AR ⁇ l adrenoceptor
• the object is solved by removing immunoglobulins from patients being suspect of suffering from or suffering from a disease caused by an increase of ⁇ -secretase activity, an increased release of ⁇ -amyolid molecules and/or cellular dysfunction of cerebral blood vessel cells, glia cells or neurons.
• the removal of immunoglobulins may be performed by adsorption of the respective immunoglobulins on a solid support. These methods as such are well known in the art.
• the invention is concerned with the use of an immunoadsorption device for manufacturing a device for the treatment of a disease caused by an increase of ⁇ -secretase activity, an increased release of ⁇ -amyolid molecules and/or cellular dysfunction of cerebral blood vessel cells, glia cells or neurons by removal of immunoglobulins from patients.
• the object is solved by a peptide having an ED 50 of less than 500 nM, in particular 10 nM to an antibody which recognizes an epitope on a human ⁇ l loop 2 and ⁇ 2 loopl of an adrenoreceptor wherein the antibody's binding to the epitope results in increase of ⁇ -secretase activity and/or increased pathological ⁇ -amyloid release and/or cellular dysfunction of cerebral blood vessel cells, glia cells or neurons, wherein the ED 50 value is measured by the bioassay which was used to identify the agAAB.
• the peptide of the invention recognizes the human ⁇ l loop epitopes of ⁇ -adrenoreceptor subtypes A, B, or C or combinations thereof.
• Xl amino group, amide, acetyl group, biotin group, marker, spacer, linker, C, GKK, SGKK or deletion,
• X2 A, G, ⁇ -Abu, F, Hph, Hyp, NaI, P, Pip, S, V, W, Y, or deletion
• X3 Hyp, P, Pip, S, T, Y, or deletion
• X8 A, ⁇ -Abu, ⁇ -A, G, S, T, V, Y, or deletion
• X9 amide, hydrazide, azide, carbamate, marker, spacer, linker, C, GKK, SGKK or deletion, or
• Xl amino group, amide, acetyl group, biotin group, marker, spacer, linker, C, GKK, SGKK or deletion
• X2 A, ⁇ -Abu, Dab, G, HyI, K, Orn, R, or deletion
• X8 Abu, Ahx, ⁇ -A, G, or deletion
• X9 amide, hydrazide, azide, carbamate, marker, spacer, linker, C, GKK, SGKK or deletion, or
• Xl amino group, amide, acetyl group, biotin group, marker, spacer, linker, C, GKK, SGKK or deletion,
• Aad is ⁇ -aminoadipic acid; ⁇ -Abu is ⁇ -aminobutyric acid; Ahx is ⁇ - aminohexanoic acid; Asu is ⁇ -aminosuberic acid; ⁇ -A is ⁇ -Alanine; Dab is ⁇ , ⁇ - diaminobutyric acid; ⁇ -Abu is ⁇ -aminobutyric acid; Har is homoarginine; Hey is homocysteine; Hph is homophenylalanine; HyI is ⁇ -hydoxylysine; Hyp is hydroxyproline; NaI is ⁇ -(l- or 2-naphthyl)-alanine; Orn is ornithine; Pip is pipecolic acid; Sec is selenocysteine and the single letter code of amino acids represents the common L-amino acids according IUPAC nomenclature as well as the corresponding D-amino acids.
• the peptide according the invention is characterized in that the linker and/or a spacer are selected from the group consisting of ⁇ -aminocarboxylic acids as well as homo- and heterooligomers thereof, ⁇ , ⁇ -aminocarboxylic acids and branched - or heterooligomers thereof, other aliphatic and/or aromatic amino acids as well as linear and branched homo- or heterooligomers; amino-oligoalkoxyalkylamines; maleinimidocarb- oxylic acid derivatives; oligomers of alkylamines; 4-alkylphenyl derivatives; 4- oligoalkoxyphenyl or 4-oligoalkoxyphenoxy derivatives; 4-oligoalkyl- mercaptophenyl or 4-oligoalkylmercaptophenoxy derivatives; 4-oligo- alkylaminophenyl or 4-oligoalkylaminophenoxy derivatives; (oligoalkylbenzyl)- phenyl or
• the peptide according to the invention is characterized in that it is selected from the group consisting of: a) a peptide consisting of the amino acid sequence
• X1-X2-X3-X4-X5-X6-X7-X8-X9 wherein Xl to X9 have the same meaning as mentioned hereinabove; b) a peptide consisting of an amino acid sequence having sufficient homology to be functionally analogous to an amino acid sequence in accordance with a); c) a peptide according to an amino acid sequence a) or b) which is modified by deletions, additions, substitutions, translocations, inversions and/or insertions and functionally analogous to an amino acid sequence in accordance with a) or b); d) a peptide according to amino acid sequence a), b) or c) which is modified by branch or extension with the same or another peptide according to amino acid sequence a), b) or c) to form a homooligomeric or heterooligomeric peptide.
• the peptide of the invention is characterized in that the amino acid sequence specified under b) has at least 40% homology to any of the amino acid sequences specified under a). Moreover, the peptide of the invention is characterized in that the amino acid sequence specified under b) has at least 60%, preferably 70%, more preferably 80%, especially preferably 90% homology to any of the amino acid sequences specified under a).
• the peptide of the invention is characterized in that it consists of the amino acid sequence APEDET; WKEPAP; PPDERF; KMWTFG or FGNFWCE.
• the peptide of the invention can be used as a medical active substance.
• the peptide according to the invention is able to bind to antibodies of patients suffering from Morbus Alzheimer.
• the peptide of the invention is furthermore characterized in that it may be immobilized and/or fixed to magnetic, paramagnetic and/or non magnetic nanoparticles.
• the peptide according to the invention is characterized in that it is bound to a solid phase.
• the peptide of the invention may be present in a linear and branched as well as cyclic form.
• the peptide ring closure is e. g. effected through disulfide bridging when two cysteines are present, or through amide cyclization, which is optionally effected through side chains, through the C to the N termini or through a combination of the latter.
• the peptide according to the invention may be further characterized in that the immunoglobulins to which it binds are agAAB which interact with the human 62-AR and ⁇ -AR .
• the peptide according to anyone of the foregoing claims characterized in that it additionally comprises amino groups, amides, hydrazides, azides, carbamates, acetyl groups, biotin groups, markers, spacers and/or linkers.
• nucleic acid molecule comprising :
• nucleic acid molecule comprising a nucleotide sequence which encodes at least one peptide selected from the group consisting of peptides according to claim 1; b) a nucleic acid molecule which is complementary to a nucleotide sequence in accordance with a); c) a nucleic acid molecule which undergoes hybridization with a nucleotide sequence according to a) or b) under stringent conditions;
• nucleic acid molecule comprising a nucleotide sequence having sufficient homology to be functionally analogous to a nucleotide sequence according to a), b) or c);
• nucleic acid molecule according to a nucleotide sequence of a) through e) which is modified by deletions, additions, substitutions, translocations, inversions and/or insertions and functionally analogous to a nucleotide sequence according to a) through e).
• the nucleic acid molecule according to the invention having the nucleotide sequence specified under d) comprises at least 40%, in particular at least 60%, preferably 70%, more preferably 80%, especially preferably 90% homology to any of the nucleotide sequences specified under a) through c).
• the nucleic acid molecule of the invention is a genomic DNA, a cDNA and/or an RNA.
• Subject matter of the present invention is also a vector comprising a nucleic acid molecule according to the invention.
• a host cell is subject matter of the invention comprising the vector according to the invention.
• Solid phases for affinity chromatography or solid-phase extraction are subject matter of the invention too, comprising organic, inorganic, synthetic polymers or mixed polymers, preferably cross-linked agarose, cellulose, silica gel, polyamide and polyvinyl alcohols, which are optionally chemically activated, with peptides according to the invention, immobilized on the surface of the solid phase e. g. by covalent bonding or by adsorption.
• the peptides can be covalently bound to the solid phase on position Xl, X2, X3, X4, X5, X6, X7, X8 and/or X9. It may be advantageous that the peptides are distanced from the support surface by linkers or spacers.
• Subject matter of the invention is also a device for removing immunoglobulins from immunoglobulin-containing samples on solid phases, wherein the device contains the solid phase of the invention. Means for the entry of immunoglobulin-containing samples can also be provided.
• Another subject matter of the invention is a pharmaceutical composition
• a pharmaceutical composition comprising the nucleic acid molecule according to the invention, the vector according to the invention, the host cell according to the invention, the peptide according to the invention, and/or the solid phase according to the invention, optionally together with a pharmaceutically tolerable carrier substance.
• kits comprising a nucleic acid molecule according to the invention, a vector according to the invention, a host cell according to the invention, a peptide according to the invention, a solid phase according to the invention and/or a pharmaceutical composition according to claim 28, optionally together with instructions for combining the contents of the kit and/or providing a formulation.
• Subject matter of the invention is also an apparatus for chromatography, comprising peptides according to the invention.
• the apparatus is characterized in that the peptides are bound to the solid phase of the invention.
• the invention is also concerned with the use of the nucleic acid molecule of the invention, the vector according to the invention, the host cell according to the invention, the peptide according to the invention, the solid phase according to the invention, the pharmaceutical composition according to the invention, the kit according to the invention, the apparatus according to the invention in the prophylaxis, diagnosis, therapy of AD as well as in the production or screening of a drug for the treatment of neurodegenerative diseases, such as AD .
• the invention discloses also a method of treatment of Morbus Alzheimer by binding and/or removal of autoantibodies by means of peptides according to the invention bound to a solid phase.
• the cells were incubated for 2 h in 2 ml fresh serum-containing medium. Seven to 10 selected cells or synchronously contracting cell clusters per flask were counted for 15 s. The change of the pulsation rate were expressed as beats per minute. This procedure was repeated twice in different cultures to yield results representing a total of up to 30 cells for each sample. Immunoglobulin fractions, agonist and antagonist drugs, peptides etc. were added singly or cumulatively as indicated. The basal contraction rate of the spontaneously beating cardiomyocytes was 162 ⁇ 4 min.
• the immunoglobulin fraction was isolated from 1- to 2-ml serum samples by ammonium sulfate precipitation at a saturation of 40%. The precipitates were washed and dissolved in dialysis buffer (154 mmol/l NaCI, 10 mmol/l sodium phosphate; pH 7.2). The procedure of precipitating, washing, and dissolving was repeated twice.
• the immunoglobulins were taken up in 1 ml PBS (pH 7.2) and dialyzed at 4°C for 30 hours against 1 I of dialysis buffer. The buffer was changed five times during dialysis. For detection of autoantibodies, the immunoglobulin fractions were added at a dilution of 1 : 20 or 1 :40 to the flasks.
• the IgG fractions feature a concentration of 10-15 mg/ml, a maximum of 10 ⁇ g/ml of which are specific receptor antibodies.
• 50 ⁇ l of this IgG solution are pre-incubated with the peptides with the following concentration of peptides: 5 ⁇ l of a buffered solution of 100 ⁇ g/ml per 50 ⁇ l IgG solution. This mixture is pre-incubated at room temperature for 30 minutes and subsequently filled into the cell culture vials, after the former nutrient solution has been removed by pipet. The amount of the medium is 2 ml. The final concentration therefore is of 0.5-0.75 mg/ml for the IgG and 0.5 ⁇ g for the peptides. If the molecular weight of the peptide (10 mer) is set with 1 KD and that of the IgG is set with 150 KD, there is an excess of agAAB .
• synthetic peptides corresponding to the sequence of the three extracellular loops of the human 62 AR or ⁇ lA-AR was added in excess (0.5 ⁇ g in 50 ⁇ l) to 50 ⁇ l of the immunoglobulin fraction.
• the mixtures were shaken and incubated at room temperature for 1 h.
• the 100- ⁇ l samples were then added to neonatal rat heart muscle cells cultured in 2 ml medium to a final dilution of 1 :40.
• the beating rate was counted for 15 s, about 60 min after the addition of the peptide/immunoglobulin mixture.
• ED50 calculation of the 50% effective dosage of agAAB to stimulate neonatale rat cardiomyocytes the affinity chromatographic purified antibodies which bind to the epitopes in loopl of the human 62 adrenoceptor or Ioop2 of the human ⁇ l adrenocepotor (sub type A) the antibodies were given into the tissue culture containing neonatal rat cardiomyocytes sequencially with increasing of antibody concentration until the maximum of the increase of the beating rate was observed.
• the ED50 was calculated by a computer program.
• the samples were centrifuged at 4,000 g for 30 min and stored at -20 0 C.
• Reagents was purchased from Sigma-Aldrich Chemie (Deisenhofen, Germany). All other chemicals were of analytical grade.
• the 62 adrenergic antagonist ICI 118,551 blocks specifically but partially the stimulating effects of the agonistic antibodies. A more effective inhibition of cellular activity of contraction is observed if additional the ⁇ adrenergic antagonist prazosin was given into the cell culture. 11 from 14 serum samples or immunoglobulins activate the cardiac myocytes.

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