WO2018128454A1 - 항 α-SYN 항체 및 그 용도 - Google Patents
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- WO2018128454A1 WO2018128454A1 PCT/KR2018/000239 KR2018000239W WO2018128454A1 WO 2018128454 A1 WO2018128454 A1 WO 2018128454A1 KR 2018000239 W KR2018000239 W KR 2018000239W WO 2018128454 A1 WO2018128454 A1 WO 2018128454A1
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Classifications
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
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- 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
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/60—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments
- C07K2317/62—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments comprising only variable region components
- C07K2317/622—Single chain antibody (scFv)
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/90—Immunoglobulins specific features characterized by (pharmaco)kinetic aspects or by stability of the immunoglobulin
- C07K2317/92—Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value
Definitions
- the present application is directed to anti- ⁇ -syn antibodies and their use.
- Alpha-synuclein is a protein consisting of 140 amino acids, mainly expressed at the entire synaptic end of a neuron, and is present as a monomer in a naturally unfolded state in a normal state. Alpha-synuclein is known to regulate the release of dopamine, a neurotransmitter that maintains synaptic vesicle supply at all synaptic ends and regulates voluntary or involuntary movement.
- alpha-synuclein binds to and interacts with droplets, phospholipid bilayers, or lipid membranes, causing structural changes to form dimers that form folded or folded ⁇ -helical forms of secondary structures. to form aggregates comprising molecules in the form of dimers, oligomers and / or fibrous forms. These aggregates are known to cause toxicity to cells and are a major component of Lewis body, an abnormal protein aggregate found in neurons of Parkinson's disease, Lewy body dementia, and various other diseases. Post-translational modifications such as phosphorylation of alpha-synuclein, or ubiquitination are also known to be involved in the aggregation and neurotoxicity of alpha-synuclein.
- alpha-synuclein aggregations include Parkinson's disease (PD), Parkinson's disease dementia (PDD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA). And a pathogenesis of a group of neurodegenerative diseases called ⁇ -synucleinopathies, including many other neuroaxonous diseases (Kim et al. Alzheimer's Research & Therapy 2014, 6:73).
- alpha-synuclein both oligomeric and monomeric alpha-synuclein were found in cerebrospinal fluid and plasma samples from Parkinson's disease patients, indicating that small molecular weight alpha-synuclein aggregates can penetrate the cell membrane to access extracellular space. It has also been shown that folded alpha-synuclein can be released from cells by exocytosis and then transferred from one area of the brain to another by intercellular delivery, such as prion proteins (Brundin P. et al. Nat Rev Mol Cell Biol 2010, 11: 301-307).
- alpha-synuclein has been a target for the development of therapeutic agents for ⁇ -synucleinopathy such as Parkinson's disease.
- Key development strategies include inhibiting aggregate formation, gene silencing and removing aggregates.
- EGCG Epigallocatechin-3-gallate
- 3- (1,3-benzodioxol-5-yl) -5- (3 -bromophenyl) -1H-pyrazole anle138b
- CLR0120 Pierhudesai S.
- Antibodies are target specific and exhibit a high half-life compared to low molecular weight compounds, but in order to increase the possibility of treating a disease, an antibody that preferentially binds to aggregates with a high binding force is required.
- the present application seeks to provide antibodies capable of specifically recognizing alpha-synuclein, especially ⁇ -Syn aggregates with high binding capacity.
- an isolated antibody or antigen-binding fragment thereof that binds to an aggregate of ⁇ -Syn
- the antibody or antigen-binding fragment comprises: (i) a heavy chain variable region comprising the complementarity determining regions of CDRH1, CDRH2 and CDRH3; And (ii) a heavy chain variable region comprising the complementarity determining regions of CDRL1, CDRL2 and CDRL3, wherein CDRH1 is selected from the group consisting of SEQ ID NOs: 1-14;
- the CDRH2 is selected from the group consisting of SEQ ID NOs: 15 to 28;
- the CDRH3 is selected from the group consisting of SEQ ID NOs: 29-42;
- the CDRL1 is selected from the group consisting of SEQ ID NOs: 43 to 56;
- the CDRL2 is selected from the group consisting of SEQ ID NOs: 57-70;
- the CDRL3 provides an isolated antibody or antigen-binding fragment thereof that binds to an aggregate of ⁇ -S
- CDRH1, CDRH2 and CDRH3 of the heavy chain variable region; And the sequences of CDRL1, CDRL2 and CDRL3 of the light chain variable region provide isolated antibodies or antigen-binding fragments thereof that bind to aggregates of ⁇ -Syn, any one of: (aa) CDRH1, CDRH2 and CDRH3, respectively SEQ ID NOs: 1, 15, and 29, and the CDRL1, CDRL2, and CDRL3 are SEQ ID NOs: 43, 57, and 71, respectively; (ab) CDRH1, CDRH2 and CDRH3 are SEQ ID NOs: 2, 16, and 30, respectively, and said CDRL1, CDRL2, and CDRL3 are SEQ ID NOs: 44, 58, and 72, respectively; (ac) CDRH1, CDRH2 and CDRH3 are SEQ ID NOs: 3, 17, and 31, respectively, and CDRL1, CDRL2, and CDRL3 are SEQ ID NOs: 45, 59, and 73, respectively; (ad)
- the heavy chain variable region of an isolated antibody or antigen-binding fragment thereof that binds to an aggregate of ⁇ -Syn according to the present disclosure comprises an amino acid sequence selected from SEQ ID NOs: 85 to 98; A sequence having at least 90% homology with an amino acid sequence selected from SEQ ID NOs: 85-98; Or a sequence having at least 95% homology with an amino acid sequence selected from SEQ ID NOs: 85-98.
- the light chain variable region of an isolated antibody or antigen-binding fragment thereof that binds to an aggregate of ⁇ -Syn according to the present disclosure comprises an amino acid sequence selected from SEQ ID NOs: 99-112; At least 90% with an amino acid sequence selected from SEQ ID NOs: 99-112; Or a sequence having at least 95% homology with an amino acid sequence selected from SEQ ID NOs: 99-112.
- the heavy and light chain variable regions of an isolated antibody or antigen-binding fragment thereof that bind to an aggregate of ⁇ -Syn according to the present disclosure are SEQ ID NOs: 85 and 99, respectively; SEQ ID NOs: 86 and 100; SEQ ID NOs: 87 and 101; SEQ ID NOs: 88 and 102; SEQ ID NOs: 89 and 103; SEQ ID NOs: 90 and 104; SEQ ID NOs: 91 and 105; SEQ ID NOs: 92 and 106; SEQ ID NOs: 93 and 107; SEQ ID NOs: 94 and 108; SEQ ID NOs: 95 and 109; SEQ ID NOs: 96 and 110; SEQ ID NOs: 97 and 111; Or the sequences represented by SEQ ID NOs: 98 and 112.
- Some antibodies or antigen-binding fragments are isolated antibodies or antigen-binding fragments thereof that bind to aggregates of ⁇ -Syn, which are monoclonal or scFV antibodies.
- the monoclonal antibody is a human antibody, a humanized antibody, or a chimeric antibody.
- any of the monoclonal antibodies according to this application are of IgG1, IgG2, IgG3 or IgG4 type.
- any of the above antibodies or antigen-binding fragments are monoclonal antibodies, Fab fragments, Fab 'fragments, F (ab') fragments, diabody or scFV.
- an isolated antibody that binds to an aggregate of ⁇ -Syn is an isolated antibody or antigen-binding fragment thereof that binds to an aggregate of ⁇ -Syn comprising any of the following heavy and light chains:
- Light and heavy chains include SEQ ID NO: 113 and SEQ ID NO: 141; SEQ ID NO: 114 and SEQ ID NO: 142; SEQ ID NO: 115 and SEQ ID NO: 143; SEQ ID NO: 116 and SEQ ID NO: 144; SEQ ID NO: 117 and SEQ ID NO: 145; SEQ ID NO: 118 and SEQ ID NO: 146; SEQ ID NO: 119 and SEQ ID NO: 147; SEQ ID NO: 120 and SEQ ID NO: 148; SEQ ID NO: 121 and SEQ ID NO: 149; SEQ ID NO: 122 and SEQ ID NO: 150; SEQ ID NO: 123 and SEQ ID NO: 151; SEQ ID NO: 124 and SEQ ID NO:
- an isolated antibody that binds to an aggregate of ⁇ -Syn is an isolated antibody or antigen-binding fragment thereof that binds to an aggregate of ⁇ -Syn comprising any of the following heavy and light chains:
- Light and heavy chains include SEQ ID NO: 127 and SEQ ID NO: 155, respectively; SEQ ID NO: 128 and SEQ ID NO: 156; SEQ ID NO: 129 and SEQ ID NO: 157; SEQ ID NO: 130 and SEQ ID NO: 158; SEQ ID NO: 131 and SEQ ID NO: 159; SEQ ID NO: 132 and SEQ ID NO: 160; SEQ ID NO: 133 and SEQ ID NO: 161; SEQ ID NO: 134 and SEQ ID NO: 162; SEQ ID NO: 135 and SEQ ID NO: 163; SEQ ID NO: 136 and SEQ ID NO: 164; SEQ ID NO: 137 and SEQ ID NO: 165; SEQ ID NO: 138 and SEQ
- any of the antibodies or antigen-binding fragments according to the present application may include inhibition of intercellular delivery of ⁇ -Syn aggregates; decompose ⁇ -Syn aggregates; Or ⁇ -Syn aggregate formation can be suppressed.
- the present disclosure also provides an isolated polynucleotide encoding the antibody or antigen-binding fragment according to the present application.
- isolated polynucleotides include the sequences represented by SEQ ID NOs: 169-224.
- present application also provides an expression vector comprising the polynucleotide according to the present application.
- the present disclosure also provides prokaryotic or eukaryotic cells or cell lines transformed with the expression vector according to the present application.
- the present invention also provides a method of culturing a cell according to the present invention, the method comprising the steps of culturing the cell according to the present under conditions sufficient for the antibody or antigen binding fragment to be expressed; And it provides a method for producing an isolated antibody or antigen-binding fragment thereof specifically binding to ⁇ -Syn, comprising the step of separating the antibody or antigen-binding fragment thereof from the cell line.
- the present disclosure also provides a composition or kit comprising any antibody or antigen-binding fragment thereof according to the present disclosure, wherein the composition may be provided as a pharmaceutical or diagnostic composition, wherein the pharmaceutical composition is a pharmaceutically acceptable carrier Or an excipient, and the diagnostic composition may further include reagents for diagnosis or detection.
- the pharmaceutical composition or kit according to the present invention is for treating ⁇ -synucleinopathy, for example, the ⁇ -synucleinopathy is Parkinson's disease (Parkinson's disease, PD), Parkinson's disease dementia (PDD), dementia with Lewy bodies, DLB), Lewy body variant of Alzheimer's disease (LBV), combined Alzheimer's and Parkinson disease, or multiple system atrophy (MSA).
- Parkinson's disease Parkinson's disease
- PDD Parkinson's disease dementia
- DLB dementia with Lewy bodies
- LBV Lewy body variant of Alzheimer's disease
- MSA multiple system atrophy
- Biological samples include various samples requiring detection of ⁇ -Syn aggregates, including, for example, cerebrospinal fluid, blood or urine, including plasma, and also include cells, tissues, or organs.
- the method may be performed in vitro or in vivo. In vivo imaging can be performed using, for example, positron emission tomography (PET), single photon emission tomography (SPECT), near infrared (NIR) optical imaging or magnetic resonance imaging (MRI).
- ⁇ -synucleinopathy of the subject comprising administering an antibody or antigen-binding fragment or a composition comprising the same to a subject in need of treatment of ⁇ -synucleinopathy and / or control of the concentration of ⁇ -syn aggregates.
- Methods of treating or adjusting the concentration of ⁇ -syn aggregates in the subject are provided.
- the present invention provides a method for diagnosing ⁇ -synucleinopathy in a subject in need of diagnosis of ⁇ -synucleinopathy, wherein the method comprises determining the concentration or intracellular location of ⁇ -Syn aggregates in the subject by any antibody or antigen binding according to the present application. Measuring / detecting into fragments; And comparing the concentration or intracellular location of the ⁇ -Syn aggregates measured in the subject with the results of a control sample, wherein similar or different results from the control indicate that the subject has ⁇ -synucleinopathy.
- the control group may be a sample having a normal or ⁇ -synucleinopathy disease.
- the present application provides a use of the antibody or antigen-binding fragment according to the present invention for the treatment of the disease in an ⁇ -synucleinopathy subject, wherein the antibody or antigen-binding fragment or composition comprising the same is used as the subject, or In the brain of a subject, inhibition of intracellular delivery of ⁇ -Syn aggregates; ⁇ -Syn aggregate degradation; Or inhibits the formation of ⁇ -Syn aggregates.
- the present application is for controlling ⁇ -Syn aggregate concentration in the brain cells of the antibody or antigen-binding fragment or a composition comprising the same, wherein the antibody or antigen-binding fragment or composition comprising the same in the brain of the subject, inhibition of intercellular delivery of ⁇ -Syn aggregates; ⁇ -Syn aggregate degradation; Or ⁇ -Syn aggregate formation can be suppressed.
- the antibodies disclosed herein preferentially bind to ⁇ -Syn, in particular ⁇ -Syn aggregates with high binding capacity.
- Antibodies or antigen-binding fragments according to the present application with high affinity can reduce ⁇ -Syn aggregate formation, thereby lowering the concentration of aggregates in the brain.
- antibodies or antigen-binding fragments according to the present invention having a high affinity for ⁇ -Syn aggregates may reduce ⁇ -Syn aggregate formation outside the central nervous system, resulting in ⁇ -Syn forms bordering the cerebrovascular barrier. By altering the equilibrium of the liver, it can bring about an effect of lowering the concentration of aggregates in the central nervous system.
- the antibodies disclosed herein can effectively remove or promote degradation of ⁇ -Syn aggregates, inhibit intracellular delivery of ⁇ -Syn, and thus can be usefully used in the treatment of diseases related to the accumulation of ⁇ -Syn aggregates.
- FIG. 1 shows a dot blot that determines whether the monoclonal antibody prepared in one embodiment according to the present invention specifically recognizes the aggregated form of native ⁇ -syn, and shows that it binds preferentially to ⁇ -syn aggregates. .
- Figure 2 is the result of measuring the affinity of the monoclonal antibody prepared in one embodiment according to the present application by ELISA.
- the antibody according to the present invention preferentially binds to a-syn aggregates with a high affinity, and could not derive affinity because it is less or less than the aggregates for a single entity.
- Figure 3a is a result of analyzing the binding specificity and affinity of the monoclonal antibody prepared in one embodiment according to the present invention with ⁇ -Syn aggregates by BIAcore. It is shown that the antibodies according to the invention bind to aggregates with high affinity. These results indicate that the causative agent of neurodegenerative diseases with alpha secuclein etiology such as Parkinson's disease can be effectively eliminated or the activity can be suppressed.
- 3B shows the results of FIG. 3A in a table.
- Figure 4 shows that the monoclonal antibody prepared in one embodiment according to the present application preferentially binds to ⁇ -syn aggregates by Octet as a result of Octet analysis of affinity binding specificity to ⁇ -Syn aggregates, the results of Figure 1 To match.
- the # 274 antibody used as a comparative group showed good binding to both monomers and aggregates.
- FIG. 5 shows a dot blot that determines whether an antibody selected through phage display specifically recognizes an aggregated form of native ⁇ -syn in one embodiment according to the present invention. Indicates.
- FIG. 6 is a result of Octet analysis of the affinity for the ⁇ -Syn aggregate of the antibody of FIG. 5. This indicates that the antibodies according to the invention bind to aggregates with high affinity. These results indicate that the causative agent of neurodegenerative diseases with alpha secuclein etiology such as Parkinson's disease can be effectively eliminated or the activity can be suppressed.
- Figure 7 shows the principle (above) and experimental results for analyzing whether the monoclonal antibody prepared in one embodiment according to the present application inhibits cell-to-cell transmission of ⁇ -syn.
- blue is the nucleus
- green is a signal when ⁇ -syn, which has come out of the cell, spreads to other cells and meets other ⁇ -syn to form aggregates.
- the number of cells showing a green signal was significantly reduced compared to the negative control IgG, which means that the antibody according to the present invention, which specifically binds to agglutination aggregates, has a cell of ⁇ -syn. It indicates that the propagation of the liver can be effectively suppressed.
- Figure 8a shows whether the monoclonal antibody prepared in one embodiment according to the present application can remove the ⁇ -Syn aggregates in mouse animal model (TG) overexpressing human ⁇ -Syn, p-129 ⁇ after administration of the antibody to the mouse This is the result of staining mouse brain tissue using -Syn antibody.
- HP is Hippocampus
- p-129 ⁇ -syn is a marker of aggregates in which the 129th residue is phosphorylated
- arrows indicate phosphorylated ⁇ -syn. This is a result indicating that the antibody according to the present invention can significantly remove ⁇ -Syn.
- WT and IgG are negative controls and antibody 274 is a comparative group that binds to both monomers and aggregates.
- FIG. 8B is the same experiment as in FIG. 8A, but is a result of staining using an antibody against total ⁇ -syn as a marker. Arrows indicate human ⁇ -syn. 9B11, 11F4, and 11F11 antibodies effectively inhibited the accumulation of total ⁇ -syn.
- Total ⁇ -syn detection indicates that the antibody according to the present invention is capable of clearing synuclein itself and inhibiting cell to cell transmission of the antibody. It can also be interpreted in another aspect that the inhibition of the formation of monomers into aggregates, or all of the monomers can be removed.
- Figure 9a shows whether the monoclonal antibody prepared in one embodiment according to the present invention can reduce microgliosis in vivo, staining the brain tissue of the mouse using Iba-1 (microgliosis) antibody as a marker after antibody administration to the mouse This is the result measured.
- the arrow indicates activated microglia, and it can be seen that the microglia activation is significantly reduced in the brain of rats to which the 3A9, 9B11 and 11F11 antibodies are administered.
- FIG. 9B shows whether the monoclonal antibody prepared in one embodiment according to the present invention can reduce astrogliosis in vivo, and staining brain tissue of a mouse using a GFAP (astrogliosis) antibody as a marker after antibody administration to the mouse One result. Arrows indicate activated estrosite. It was confirmed that 3A9, 9B11, and 11F11 antibodies effectively inhibited astrogliosis at a significant level.
- FIG. 9C shows whether the monoclonal antibody prepared in one embodiment according to the present invention can reduce inflammatory cytokines in vivo, and stain the brain tissue of the mouse using IL-1beta antibody as a marker after antibody administration to the mouse. This is the result measured. Arrows indicate cells expressing IL-1 beta. IL-1 beta causes inflammation and induces the death and inflammatory response of various neurons, indicating a significant reduction in IL-1 beta in the brain tissues of mice administered with the antibody according to the present application.
- FIGD shows whether monoclonal antibodies prepared in one embodiment according to the present invention can reduce inflammatory cytokines in vivo, by staining brain tissue of mice using IL-6 antibodies as markers after antibody administration to mice. It is a result of a measurement. Arrows indicate cells expressing the inflammatory cytokine IL-6. A decrease in IL-6 was observed in the brain tissues of the rats to which the antibody according to the present invention was administered.
- 10A and 10B show whether the monoclonal antibodies 3A9 and 11F11 prepared in one embodiment according to the present application can specifically recognize Lewy body and Lewy neurites in human brain tissue, respectively. It is the result of each measurement. It is shown that the antibody according to the present invention binds to Lewy bodies (arrows) and Lewy neurites (lower left thread). These results indicate that the antibodies of the present invention can specifically bind to ⁇ -syn aggregates present in actual human brain tissue, and can be effectively used for the prevention and / or treatment of diseases related to ⁇ -syn etiology. .
- Figure 11 schematically shows the epitope mapping results of the antibodies prepared herein, wherein the antibodies according to the present invention were found to bind mostly to the C-terminal site.
- ⁇ -syn antibodies that recognize the N-terminus do not recognize aggregates of other diseases, such as multiple system atrophy (MSA), belonging to synucleionopathy, which is commonly referred to as ⁇ -synuclein-related disorders, while recognizing the C-terminal region ⁇ -syn antibodies have the advantage of recognizing aggregates of Parkinson's disease as well as various other synucleinopathy diseases.
- MSA multiple system atrophy
- the present application can specifically bind to ⁇ -syn, in particular aggregates, with a high binding force such that detection of ⁇ -syn aggregates, as well as inhibition of ⁇ -syn aggregates and / or inhibition of ⁇ -syn aggregate formation and / or ⁇ -syn It is based on the development of antibodies that can inhibit intercellular delivery of aggregates.
- polynucleotide or “nucleic acid” includes single or double stranded nucleotide polymers. Nucleotides comprising such polynucleotides may be ribonucleotides or deoxyribonucleotides or modified forms thereof.
- the left end of the polynucleotides referred to herein is the 5 'end and the right end represents the 3' end.
- an “isolated nucleic acid molecule” refers to DNA or RNA of genomic origin, or mRNA of synthetic origin, in which all or part thereof is unrelated to polynucleotides present in nature or linked to polynucleotides not found in nature. , cDNA or a combination thereof.
- a nucleic acid molecule comprising a particular nucleic acid sequence does not comprise an intact chromosome.
- an isolated nucleic acid molecule comprising a particular nucleic acid sequence may comprise, in addition to that particular sequence, at least several additional protein coding sequences, or add regulatory sequences and / or vectors for expression of said specific nucleic acid sequence. It can be included as.
- regulatory sequence refers to a polynucleotide sequence that is operably linked thereto to affect the expression and processing of a coding sequence.
- the nature of such regulatory sequences may depend on the type of host.
- regulatory sequences that may act on prokaryotic cells may include promoters, optionally operators, ribosomal binding sites, and transcription termination sequences.
- regulatory sequences may include promoters, transcriptional enhancers, polyadenylation sequences, and transcription termination sequences, including a plurality of recognition sites to which transcription factors bind. Regulatory sequences may also include leader sequences and / or fusion partner sequences.
- vector any molecule, including, for example, nucleic acids, plasmids, bacteriophages or viruses used to deliver a nucleic acid molecule encoding a protein to a host cell.
- an "expression vector” refers to a vector suitable for transformation of a host cell and comprising a nucleic acid sequence that is operably linked to an expression vector to regulate expression of a heterologous sequence encoding a protein of interest.
- Such expression vectors may also include sequences that are operably linked to coding sequences to control or influence RNA splicing, if present, of their transcription, translation, and introns.
- “Operably linked” herein means that the nucleic acid sequences to be linked are positioned so that they can perform the desired function under appropriate conditions. For example, in a vector comprising a coding sequence and a regulatory sequence, if the transcription of the coding sequence is affected by the regulatory sequence, it is operably linked.
- “Host cell” as used herein means a cell capable of expressing a gene of interest, either transformed with or capable of being transformed with a nucleic acid sequence of interest. The term also encompasses the progeny of the host cell, so long as the gene of interest is expressed, whether or not the form and genetic makeup are identical to the host cell.
- Transduction typically refers to the transfer of nucleic acids from one bacterium to another by bacteriophages. For example, migration of nucleic acids to eukaryotic cells using retroviruses that do not replicate.
- Transfection means that the cells, in particular eukaryotic cells, take foreign or exogenous DNA, in which case the DNA is introduced into the cell through the cell membrane. This is known to those skilled in the art, for example Sambrook et al. Molecular Cloning: A Laboratory Manual, 4th ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (2012), Ausubel et al., Current Protocols in Molecular Biology, Greene Publishing Associates.
- transformation herein is meant a change in the genetic characteristics of a cell, where the cell has been modified to contain new DNA or RNA.
- cells can be transformed by introducing new genetic material through transduction, transduction, or other techniques to change genetic characteristics.
- DNA transformed by a method including transduction or transduction may exist physically integrated into the chromosome of a cell, or may be present temporarily in episomal form or replicable plasmid without replication. When the transformed DNA is replicated with host cell division, it is considered to be stably transformed.
- Amino acid herein includes the common meaning understood in the art. Twenty naturally-occurring amino acids and their abbreviations follow those commonly known in the art (Immunology-A Synthesis, 2nd Edition, E. S. Golub and D. R. Green, eds., Sinauer Associates: Sunderland, Mass. 1991). Amino acids include not only typical amino acids but also stereoisomeric (D-amino acids) of typical 20 amino acids, non-natural amino acids such as ⁇ -, ⁇ -disubstituted amino acids, N-alkyl amino acids, and other non-typical amino acids. Include.
- non-typical amino acids include 4-hydroxyproline, ⁇ -carboxyglutamate, ⁇ -N, N, N-trimethyllysine, ⁇ -N-acetyllysine, O-phosphoserine, N-acetylserine, N-formyl Methionine, 3-methylhistidine, 5-hydroxylysine, s-N-methylarginine, and other similar amino acids and imino acids (eg 4-hydroxyproline).
- the left side of the sequence is the amino terminus and the right side represents the carboxy terminus.
- polypeptide or “protein” refers to a polymer of amino acid residues and is used interchangeably herein. It also includes polymers of naturally occurring amino acid residues, as well as polymers of amino acids of analogs or mimetics thereof. Polypeptides or proteins may also include modifications, such as the addition of carbohydrates for phosphorylation or glycosylation. Polypeptides or proteins can also be produced in cells found recombinantly or in nature. Polypeptides or proteins also include those in which a wild type sequence, or a portion of the amino acid sequence, has been deleted, added, and / or substituted.
- polypeptide or protein may also comprise a sequence in which one or more amino acids of an antibody, such as an anti- ⁇ -Syn antibody (or ⁇ -Syn antibody), ⁇ -Syn binding protein, or antigen binding fragment are deleted, added and / or substituted.
- an antibody such as an anti- ⁇ -Syn antibody (or ⁇ -Syn antibody), ⁇ -Syn binding protein, or antigen binding fragment are deleted, added and / or substituted.
- Polypeptide fragment also refers to a polypeptide having an amino terminal deletion, a carboxyl terminal deletion and / or an internal deletion as compared to the full length protein. Such fragments may also include modified amino acids as compared to full length proteins. In one embodiment, the fragment is about 5 to 500 amino acids in length, for example, the fragment is at least 5, 6, 8, 10, 14, 20, 50, 70, 100, 110, 150, 200, 250 in length.
- useful polypeptide fragments include immunologically functional fragments of an antibody comprising an antigen binding domain.
- useful fragments include, but are not limited to, CDR sequences comprising one, two or three of the heavy or light chains, variable regions of the heavy or light chains, or portions of the antibody chains. It is not.
- an “isolated polypeptide, antibody or protein” is free of other proteins that can be commonly found with them, and at least about 50% or more of the lipids, carbohydrates, and polynucleotides that are naturally associated with them are removed. It is. Typically the isolated protein, polypeptide or antibody constitutes at least about 5%, at least about 10%, at least about 25%, or at least about 50% in certain compositions. Such polypeptides may be encoded by genomic DNA, cDNA, mRNA or other RNA of synthetic origin, or any combination thereof. In particular, an isolated protein polypeptide or antibody is substantially free of contaminants of other proteins or other polypeptides that would interfere with its application for therapeutic, diagnostic, prophylactic studies or other uses.
- a “variant” of a polypeptide such as, for example, an antigen binding fragment, protein, or antibody, herein refers to a polypeptide having insertions, deletions, additions and / or substitutions at one or more amino acid residues as compared to other polypeptide sequences or herein. Maintaining the biological activity of the disclosed antibodies includes fusion polypeptides. Protein variants are also modified by protein enzyme cleavage, phosphorylation or other post-translational modifications, but include retaining binding to biological activities of the antibodies disclosed herein, such as alpha-synuclein aggregates.
- Variants may comprise about 99%, 98%, 97%, 96%, 95%, 94%, 93%, 92%, 91%, 90%, 89%, 88% of the sequence of an antibody or antigen-binding fragment thereof disclosed herein. , 87%, 86%, 85%, 84%, 83%, 82%, 81%, or 80% identical.
- derivatives of a polypeptide herein is meant a polypeptide that has been chemically modified through conjugation with other chemical moieties that are different from insertion, deletion, addition or substitutional variants.
- ⁇ -Syn herein is the native ⁇ -Syn (NCBI ID: NP — 000336) consisting of 140 residue amino acids encoded by the SNCA gene, including the full-length untreated as well as various forms of treatment. Also included are naturally occurring variants of ⁇ -Syn, such as mutations, splice variants or allelic variants. Variants exist in addition to 140 residue proteins, 126 and 112 residue protein forms that have been deleted exon 3 and exon 5 (CAG3339.1). In addition, certain polymorphisms or missense mutations in the SNCA gene are known to be associated with the development of Parkinson's disease (Singleton AB, et al., Science 2003, 302: 841) and include such mutants.
- beta- and gamma-Syn homologs of ⁇ -Syn There are beta- and gamma-Syn homologs of ⁇ -Syn.
- the antibody according to the present disclosure specifically recognizes ⁇ -Syn.
- the amino acid sequence of ⁇ -Syn is represented by SEQ ID NO: 225.
- ⁇ -Syn aggregates are due to changes in the conformation of ⁇ -Syn and include structures or aggregates comprising oligomers, protofibrils, fibrils and / or one or more of the above structures.
- Identity herein refers to sequence similarity of two or more polypeptides or two or more polynucleotides, as determined by aligning and comparing two or more polypeptides or two or more polynucleotide sequences. Such intersequence identity is generally expressed as "percent identity", which means the same amino acid or nucleotide ratio between molecules being compared and is calculated based on the smallest molecule of the molecules being compared.
- the sequences being compared are aligned in a manner that provides maximum matching between the sequences, where there may be gaps, matches, and mismatches in the aligned sequences, which are processed by specific mathematical models or computer algorithms.
- this percent identity is determined using a GCG program package comprising a GAP program that uses the Needlman and Wunsch algorithms to align the two sequences in such a way as to maximize the match between the compared sequences and minimize the number of gaps.
- the computer algorithm GAP determines the "span” by aligning the two sequences in such a way as to maximize the match between them in the two polypeptide or polynucleotide sequences being compared and minimize the number of gaps.
- the algorithm also calculates a gap opening penalty (which is 3 x average diagonal, where the "average diagonal” is the average of the terms of the comparison matrix used; "Term” is the score or number assigned to each complete amino acid match by a particular comparison matrix] and a gap extension penalty (which is typically 1/10 times the gap opening penalty), and examples
- a comparison matrix such as PAM 250 or BLOSUM 62 is used together.
- a standard comparison matrix (PAM 250 comparison matrix is described in Dayhoff et al.
- the recommended parameters for determining the percent identity of a polypeptide or polynucleotide using the GAP program are as follows: Algorithm: Needleman et al. J. Mol. Biol. 1970, 48: 443-453; Comparative Matrix: BLOSUM 62 (Henikoff et al., 1992, supra); Gap penalty: 12 (no penalty for terminal gap); Gap length penalty: 4; Similarity threshold: 0.
- the parameters of the algorithm used such as the GAP program, can be modified so that the two sequences are aligned over at least 50 consecutive amino acids.
- substantially pure is one in which the desired molecule of interest is present as the dominant species. That is, on a molar basis, it means that the concentration is higher than any other individual species in the same mixture.
- the substantially pure molecule comprises at least about 50% (in moles), at least about 80%, about 85%, at least about 90%, at least about 95%, or at least about 99 of all polymer types included in the composition. Included in%.
- the molecule of interest is purified substantially homogeneously to the extent that no more contaminants are detected using known methods, so that the composition comprises only one type of polymeric material that is homogeneous.
- a "recombinant protein” is a protein produced using recombinant technology, eg, via expression of a recombinant nucleic acid as described herein. Methods and techniques for the production of recombinant proteins are well known in the art.
- affinity or “affinity” or “binding force” is the strength of the interaction between an antibody or antigen-binding fragment thereof and the antigen, the characteristics of the antigen such as the size, shape and / or charge of the antigen and the antibody or antigen Determined by the CDR sequence of the binding fragment. Methods of determining such affinity are known in the art and may also be referenced below.
- An antibody or antigen-binding fragment thereof may be said to "specifically bind" to its target, such as an antigen, when its dissociation constant (K D ) binds with an affinity of ⁇ 10 -6 M.
- the antibody specifically binds to the target with “high affinity” when K D is ⁇ 1 ⁇ 10 ⁇ 8 M.
- the affinity for aggregates of antibodies or antigen binding fragments according to the invention has a high affinity of ⁇ 1 ⁇ 10 ⁇ 9 M, in particular ⁇ 1 ⁇ 10 ⁇ 10 M, especially ⁇ 1 ⁇ 10 ⁇ 11 M.
- Preferably binding includes binding only to ⁇ -syn aggregates or binding to both ⁇ -syn aggregates and monomers but with a higher affinity to aggregates than monomers.
- the antibody or antigen-binding fragment thereof according to the present invention does not bind ⁇ -Syn monomer, but only binds specifically to high affinity.
- the antibody or antigen-binding fragment thereof according to the invention binds to both monomers or aggregates, but binds to ⁇ -Syn aggregates with a higher affinity as compared to the monomers.
- the affinity for the ⁇ -Syn aggregates is at least two times higher than the affinity for the ⁇ -Syn monomer, or with a low binding force that cannot be determined to bind specifically as an antibody, or in an experimental range of concentrations. It binds with the binding force which is not measurable with the antibody of.
- the high binding force to the ⁇ -Syn aggregate of the antibody or antigen-binding fragment according to the present disclosure is K D ⁇ 1.0 ⁇ 10 ⁇ 8 M; In other embodiments, K D ⁇ 1.0 ⁇ 10 ⁇ 9 M; In another embodiment, K D ⁇ 1.0 ⁇ 10 ⁇ 10 M; In another embodiment, K D ⁇ 1 ⁇ 10 ⁇ 11 M, and in another embodiment, K D ⁇ 1 ⁇ 10 ⁇ 12 M.
- Antibodies or antigen-binding fragments according to the present application having such a high affinity can be administered at lower dosages compared to antibodies having lower affinity such as K D greater than 10 ⁇ 7 M or 10 ⁇ 8 M. There is this. This does not limit, for example, antibodies.
- antibodies or antigen-binding fragments according to the present application having a high affinity for ⁇ -Syn aggregates may reduce ⁇ -Syn aggregate formation, thereby lowering the concentration of aggregates in the brain.
- antibodies or antigen-binding fragments according to the present invention having high affinity for ⁇ -Syn aggregates may reduce ⁇ -Syn aggregate formation outside the central nervous system, resulting in ⁇ -Syn forms bordering the cerebrovascular barrier. By altering the equilibrium of the liver, it can bring about an effect of lowering the concentration of aggregates in the central nervous system.
- antigen binding region or site herein is meant a protein or portion of a protein that specifically binds to a particular antigen. This corresponds, for example, to a portion of an antibody comprising amino acid residues that interact with the antigen to provide the antibody with specificity and affinity for the antigen.
- antigen binding regions typically comprise one or more "complementary determining regions,” or CDRs.
- CDRs are amino acid sequences that contribute to the specificity and affinity of antigen binding. Framework regions can help maintain proper conformation of these CDRs to promote binding between antigen binding regions and antigens.
- antibody herein is meant an intact immunoglobulin of any isotype, or an antigen binding fragment capable of competing with an intact antibody for binding to a target antigen.
- Antibodies are themselves a type of antigen binding protein. Intact antibodies generally include at least two full-length heavy chains and two full-length light chains, although in some cases the antibodies may comprise only heavy chains, as found naturally in camel animals.
- the antibody or antigen-binding fragment thereof may be derived from only a single source or may be chimeric.
- Chimeric antibodies include moieties derived from two different antibodies, described in more detail below.
- the antibody or antigen-binding fragment thereof can be produced by hybridoma, recombinant DNA technology or enzymatic or chemical cleavage of the intact antibody.
- the term antibody herein includes antibodies comprising two full-length heavy chains and two full-length light chains, as well as derivatives, variants, fragments, and mutants thereof, examples of which are described below. .
- Light chain as used herein includes full length light chains and fragments thereof having variable region sequences sufficient to provide binding specificity for the antigen or epitope.
- the full length light chain includes the variable region domain VL, and the constant region domain CL.
- the variable region domain of the light chain is at the amino terminus of the light chain polypeptide.
- Types of light chains include kappa and lambda chains.
- Heavy chain herein includes full length heavy chains and fragments thereof having variable region sequences sufficient to provide binding specificity for the antigen or epitope.
- the full length heavy chain comprises the variable region domain VH and three constant region domains CH1, CH2 and CH3.
- VH The domain is at the amino terminus of the heavy chain polypeptide, the CH domain is at the carboxy terminus and CH3 is located closest to the carboxy-terminus.
- Heavy chains include isotypes of IgG (including IgG1, IgG2a, IgG2b, IgG3 and IgG4 subtypes), IgA (including IgA1 and IgA2 subtypes), IgM and IgE.
- an “antigen binding fragment” of an antibody or immunoglobulin chain is intended to include a portion of an antibody that lacks some amino acids compared to the full length chain, but which can specifically bind an antigen.
- Such fragments can be said to be biologically active in that they can specifically bind to the target antigen or can compete with other antibodies or antigen binding fragments for binding to specific epitopes.
- such fragments comprise at least one CDR present in a full length light chain or heavy chain, and in some embodiments, comprise a single chain heavy and / or light chain, or portion thereof.
- Such biologically active fragments may be produced by recombinant DNA techniques or may be produced, for example, by enzymatic or chemical cleavage of an intact antibody.
- Immunologically functional immunoglobulin fragments include, but are not limited to, Fab, Fab ', F (ab') 2 , Fv, domain antibodies, and single chain antibodies. It may also be derived from any mammal, including but not limited to humans, mice, rats, camelids or rabbits.
- Functional portions of an antibody, such as one or more CDRs disclosed herein can be covalently linked to a second protein or a small molecule compound to be used as a target therapeutic agent for a particular target.
- Fab fragment herein consists of one light chain and one heavy chain comprising only the CH1 and variable regions.
- the heavy chain of the Fab molecule cannot form disulfide bonds with other heavy chain molecules.
- the “Fc” region herein includes two molecules of heavy chain fragments comprising the CH2 and CH3 domains of an antibody. These two heavy chain fragments are linked to each other by two or more disulfide bonds and hydrophobic interaction of the CH3 domain.
- Fab 'fragment herein further comprises a region present in the Fab fragment between the CH1 and CH2 domains of the heavy chain, such that an interchain disulfide bond is formed between the two heavy chains of the Fab ′ fragment of the two molecules, such that F (ab ') 2 molecules can be formed.
- F (ab ′) 2 fragment herein includes two molecules, including two light chains and a heavy chain two molecule comprising a variable region, a constant region between CH1 and CH1 and CH2 domains, as described above. Interchain disulfide bonds are formed between the heavy chains.
- the F (ab ') 2 fragment consists of two Fab' fragments, the two Fab 'fragments being associated with each other by disulfide bonds between them.
- Fv region herein is an antibody comprising the variable regions of the heavy and light chains but not the constant regions.
- a “single chain antibody” herein is a single polypeptide chain of antigen binding region wherein the heavy and light chain variable regions are linked by a flexible linker.
- Single chain antibodies may be referred to, for example, US Pat. No. 5,260,203.
- a “domain antibody” herein is an immunologically functional immunoglobulin fragment comprising only the variable region of the heavy chain or the variable region of the light chain.
- two or more VH regions are covalently linked by a peptide linker to form a bivalent domain antibody.
- Two VH regions of such bivalent domain antibodies may target the same or different antigens.
- Double antigen binding protein or “bivalent antibody” herein includes two antigen binding sites.
- the two antigen binding sites included in such bivalent antibodies may be bispecific antibodies having the same antigen specificity or binding to different antigens, respectively.
- Multispecific antigen binding protein or “multispecific antibody” as used herein is to target two or more antigens or epitopes.
- bispecific antigen binding protein or antibody herein is a hybrid antigen binding protein or antibody having two different antigen binding sites.
- Such bispecific antibodies are a kind of multi-specific antigen binding protein or multi-specific antibodies, and can be produced by various known methods such as fusion of hybridomas or ligation of Fab 'fragments. See, eg, Songsivilai and Lachmann, Clin. Exp. Immunol. 1990, 79: 315-321; Kostelny et al. J. Immunol. 1992, 148: 1547-1553, and the like.
- Two different epitopes to which two antigen binding sites of a bispecific antigen binding protein or antibody bind may be located at the same or different protein target.
- the term “antigen” or “immunogen” refers to, for example, the production of antibodies capable of binding an antigen binding protein (eg, an antibody or immunologically functional antigen binding fragment thereof) and capable of binding an antigen in an animal. Means a molecule or a part of a molecule that can be used. Antigens can include one or more epitopes that can interact with different antibodies or fragments thereof. In one embodiment according to the invention the antigen is ⁇ -Syn comprising residues 1-120 amino acid residues having the full length ⁇ -Syn or C-terminus deleted.
- Epitope as used herein is part of a molecule that is bound by or recognizes an antigen binding protein or an antibody, such as any determination capable of specifically binding to an antigen binding protein such as an antibody or a T-cell receptor. Contains the arguments.
- Epitopes can be contiguous or discontinuous, for example, not contiguous with each other in the polypeptide sequence, but in terms of molecules, such as conformational epitopes, are bound by one antigen-binding protein but are separated from each other. It may be a flag.
- the epitope comprises a three-dimensional structure similar to the epitope used for antibody production, but may be mimic in the sense that it may contain no residues or only some residues found in the epitopes.
- Epitopes are generally proteins, but can be other kinds of substances, such as nucleic acids. Epitope determinants may be chemically active groups formed on surfaces by molecules such as, for example, amino acids, sugar side chains, phosphoryl groups or sulfonyl groups, or may have specific three dimensional structural characteristics and / or specific charge characteristics.
- an antibody specific for a particular target antigen recognizes an epitope on the target antigen present in a complex of protein and / or polymer.
- Antibodies according to the invention have been shown to recognize the C-terminus.
- the antibody according to the invention comprises a C-terminus, particularly 110-120 residues of ⁇ -Syn protein; Or in other embodiments, recognizes 111-122 residues. In particular, when it recognizes between 110 and 122, the aggregates showed a favorable binding.
- Conjugate herein refers to a chimeric molecule of an antibody or antigen-binding fragment thereof disclosed herein with another molecule, in particular the vascular brain barrier carrier or therapeutic agent described below.
- an antibody or antigen-binding fragment thereof according to the present invention may be prepared by a method comprising physical force, encapsulation, embedding, or combinations thereof with other molecules, for example, by covalent or van des Waals or hydrophobic interactions. Physically coupled.
- the antibody or antigen-binding fragment thereof according to the invention may be linked via a peptide linker.
- the antibody or antigen-binding fragment thereof according to the present invention can also be linked with the therapeutic agent through an alcoholic acid group, a carbonyl group, a thiol group or an amine group using conventional chemical synthesis methods (eg US2010 / 0028370).
- the antibody or antigen-binding fragment thereof according to the present forms a fusion protein when covalently linked to another peptide or through a peptide.
- the “vascular brain barrier” or BBB herein is a barrier formed by tight junctions in the capillary endothelial membranes of the brain that exist between the brain and spine and their surrounding circulatory system. These barriers are so strong that they also limit the passage of low molecular weight molecules of about 60 Da in the brain.
- the vascular brain barrier of the brain, the vascular spinal cord barrier of the spine, and the vascular retinal barrier of the retina are continuous capillary barriers in the central nervous system, commonly referred to as BBB.
- vascular brain barrier carrier refers to a protein, nucleic acid, antibody, or small molecule compound, including molecules such as peptides and polypeptides that can pass through such a vascular brain barrier to deliver an antibody or antigen binding fragment according to the invention. It includes.
- therapeutic agent refers to a molecule administered to a subject for a desired therapeutic effect.
- Subjects include non-human mammals such as primates or humans.
- therapeutic agents include proteins, nucleic acids, antibodies, or small molecule compounds, including peptides and polypeptides.
- the therapeutic agent may be used in one embodiment as a therapeutic agent for a disease associated with an ⁇ -Syn aggregate in combination with the antibody according to the invention.
- the term “treating” refers to, for example, a reduction, alleviation, alleviation of an injury, disease, or disease symptom or condition, or a condition in which the patient is better able to tolerate the symptoms or pathological condition of the injury, disease, or disease.
- the treatment or amelioration of such injury, disease, or symptom or pathological condition of the disease may be determined based on the results of physical examination, various indicator tests and imaging tests associated with the disease.
- the method according to the invention comprises treating a disease associated with ⁇ -Syn, reducing the frequency of disease occurrence, reducing disease severity and / or alleviating symptoms of a disease associated with ⁇ -Syn.
- Diseases associated with ⁇ -Syn aggregates is a group of neurodegenerative diseases called Lewy bodies disease or ⁇ -synucleinopathy, in which ⁇ -Syn aggregates are found in lesions comprising neuronal and glia populations, Degeneration, motor change, cognitive impairment and the formation of Lewy bodies and / or Louis Newlite (Kim et al. Alzheimer's Research & Therapy 2014, 6:73; McKeith et al., Neurology (1996) 47: 1113-24). These diseases include Parkinson's disease (PD), Parkinson's disease dementia (PDD), dementia with Lewy bodies (DLB), and Lewy body variant of Alzheimer's disease (LBV). ), Combined Alzheimer's and Parkinson disease, multiple system atrophy (MSA), and many other neuroaxonic diseases.
- the antibodies according to the invention are effectively used for the treatment of PD.
- an “effective amount” herein generally refers to a reduction in the severity and / or frequency of symptoms due to a disease, in particular a disease associated with ⁇ -Syn, the root of the symptoms and / or disease occurrence due to a disease, in particular a disease associated with ⁇ -Syn Means sufficient to eliminate the cause, or to prevent symptoms and / or root cause occurrence due to a disease, in particular a disease associated with ⁇ -Syn, and / or to ameliorate or correct damage due to a disease, particularly a disease associated with ⁇ -Syn do.
- the effective amount is a therapeutically effective amount or a prophylactically effective amount.
- a “therapeutically effective amount” is an amount sufficient to treat a condition or condition associated with a disease, in particular ⁇ -Syn, or to reverse the prophylaxis, retardation, or progression of a disease, particularly a condition or symptom associated with ⁇ -Syn.
- a “prophylactically effective amount”, when administered to a subject, prevents or delays the onset or recurrence of a disease, in particular a disease associated with ⁇ -Syn, or a disease, especially a disease associated with ⁇ -Syn, or a related symptom, The amount that reduces the likelihood of occurrence.
- a complete therapeutic or prophylactic effect may occur by several doses of the dose rather than by one dose of the dose.
- a therapeutically or prophylactically effective amount can be delivered by one or more administrations.
- Antibodies according to the invention are polypeptides comprising one or more complementarity determining regions or regions (CDRs), as disclosed herein.
- the CDRs are included in a “framework” region, the framework orienting the CDR (s) such that such CDR (s) can have appropriate antigen binding properties.
- the antibodies according to the invention can specifically bind with high affinity to ⁇ -Syn, in particular ⁇ -Syn aggregates found in human-derived brains.
- the antibodies according to the invention preferentially bind with high affinity to, in particular, ⁇ -Syn aggregates and can reduce their concentration.
- Reduction or degradation of ⁇ -Syn aggregates by the antibody or antigen-binding fragment according to the present invention involves the antigen antibody complex promoting degradation by lysosomes in the cell to effectively remove and degrade the pathogen.
- the antibodies or antigen-binding fragments thereof herein bind preferentially to a-Syn aggregates with high affinity, thereby preventing further formation of the ⁇ -Syn aggregates, lowering their concentrations, and preventing intercellular metastasis. It can also be suppressed and lower the effective dosage in development with drugs.
- the antibodies or antigen-binding fragments thereof herein preferentially bind to ⁇ -Syn aggregates with high affinity, thereby inhibiting or preventing the transfer of ⁇ -Syn aggregates from one cell to another.
- the antibody is a monoclonal antibody, bispecific antibody, minibody, domain antibody, antibody mimetic (or synthetic antibody), chimeric antibody, humanized antibody, human antibody, antibody fusion (or antibody conjugate), and Including but not limited to fragments thereof includes various forms of antibodies disclosed herein.
- an antibody fragment of an antibody disclosed herein is a Fab chain, Fab 'fragment, F (ab') 2 fragment, Fv fragment, diabody or single chain single chain in which the heavy chain variable region and the light chain variable region are linked via a spacer. It may be an antibody molecule.
- the antibodies disclosed herein may consist of light chain only or heavy chain only polypeptides comprising the variable regions disclosed in Tables 1a and 1b.
- the antibodies disclosed herein share certain regions or sequences with other antibodies disclosed herein.
- the constant region of the antibody or antigen-binding fragment can be shared.
- the Fc region may be shared.
- the frame of the variable region may be shared.
- the antibodies disclosed herein have been shown to bind with high affinity to human ⁇ -Syn aggregates. As further described in the Examples below, testing of multiple antibody clones revealed the presence of epitopes at the 110-120 or 111-122 residues at the C-terminus. Although not limited by this theory, the preferred binding and high affinity for the aggregates of the antibodies of the present disclosure may be due to the recognition of 110-120 sites, as compared to antibodies that recognize 121-130 residues of the existing C terminus. .
- the antibody according to the invention has the typical structure of an antibody found in nature.
- Structural monomers of such antibodies produce an antibody in which camels and animals consist of a single heavy chain, but generally comprise tetrameric polypeptides, which have two pairs of polypeptide chains composed of two different polypeptide chains. Contains dogs.
- the pair of polypeptide chains comprises one full length light chain (about 25 kDa) and one full length heavy chain (about 50 to 70 kDa).
- Each chain consists of several immunoglobulin domains, exhibiting a characteristic folding pattern and consisting of about 90 to 110 amino acids. These domains are the basic units that make up the antibody polypeptide.
- each chain typically includes a portion called the variable region or V region, which is the portion that recognizes the antigen.
- the carboxy-terminal portion is evolutionarily more conserved than the amino-terminus and includes a portion called the constant or C region.
- Human light chains are generally classified as kappa ( ⁇ ) and lambda ( ⁇ ) light chains, each of which comprises one variable region and one constant region.
- Heavy chains are typically classified as mu ( ⁇ ), delta ( ⁇ ), gamma ( ⁇ ), alpha ( ⁇ ) or epsilon ( ⁇ ) chains, which are defined as IgM, IgD, IgG, IgA and IgE isotypes, respectively.
- IgG also includes a number of subtypes, including but not limited to IgG1, IgG2, IgG2a, IgG2b, IgG3, and IgG4.
- IgM subtypes include IgM and IgM2.
- IgA subtypes include IgA1 and IgA2.
- the IgA and IgD isotypes comprise four heavy chains and four light chains;
- IgG and IgE isotypes comprise two heavy chains and two light chains, and IgM isotypes comprise five heavy chains and five light chains.
- the heavy chain constant region typically contains one or more domains that exhibit effector function. The number of heavy chain constant region domains depends on the isotype.
- IgG heavy chains comprise, for example, three C region domains known as C H 1, C H 2 and C H 3, respectively.
- the antibodies disclosed herein may be any one of these isotypes and subtypes.
- ⁇ -Syn antibodies according to the present disclosure may have an IgG1, IgG2a, IgG2b, IgG3 or IgG4 subtype.
- the heavy chain variable region and the light chain variable region according to the present disclosure may be linked to at least a portion of a human constant region.
- the choice of constant regions can be determined in part by whether antibody dependent cell mediated cytotoxicity, antibody dependent cell phagocytosis and / or complement dependent cytotoxicity are required.
- human isotypes IgG1 and IgG3 have complement dependent cytotoxicity
- human isotypes IgG2 and IgG4 do not have such cytotoxicity.
- human IgG1 and IgG3 induce stronger cell mediated effector functions than human IgG2 and IgG4.
- the light chain constant region may be lambda or carpile.
- an antibody provided herein is a human antibody and the heavy chain constant region may be of IgG1-, IgG2- IgG3- or IgG4-type. In a further embodiment, the antibody herein is of IgG1- or IgG2-type.
- variable and constant regions are joined by a "J" region that is at least about 12 amino acids in length, and the heavy chain also includes a "D” region of at least about 10 amino acids.
- J Fundamental Immunology, 2nd ed., Ch. 7 (Paul, W., ed.) 1989, New York: Raven Press.
- variable regions of the light / heavy chain pairs of antibodies form antigen binding sites.
- variable regions of immunoglobulin chains generally have the same overall structure and comprise a relatively conserved framework region (FR) followed by three hypervariable regions called “complementary determining regions or regions or domains” or CDRs. .
- the CDRs of the variable regions derived from each chain that make up the heavy / light chain pair are typically aligned by framework regions to form structures that specifically bind to specific epitopes of the target protein ( ⁇ -Syn).
- ⁇ -Syn specific epitopes of the target protein
- the position of the amino acid sequence corresponding to each of these in the variable region is determined by the Kabat numbering system (Kabat Sequences of Proteins of Immunological Interest (1987 and 1991, NIH, Bethesda, MD), or Chothia & Lesk, J. Mol. Biol. 1987, 196). : 901-917; Chothia et al. 1989, Nature 1989, 342: 878-883.
- the heavy and light chain variable region and CDR sequences of an antibody or antigen binding fragment according to one embodiment herein are disclosed in Tables 1a and 1b.
- CDR sequences in each variable region are underlined and represent CDR1, CDR2 and CDR3 sequences, respectively, in order from front to back.
- variable regions of the heavy and light chains described in Tables 1A and 1B may be freely combined for the preparation of various types of antibodies.
- the CDRs of each variable region of the light chain and the CDRs of each variable region of the heavy chain disclosed in Tables 1A and 1B may be freely combined.
- Each variable region disclosed herein can be coupled to various heavy and light chain constant regions of interest to form the heavy and light chains, respectively, of an intact antibody.
- each of the heavy and light chain sequences thus linked to the constant region can also be combined to form an intact antibody structure.
- the heavy and light chain variable regions of the antibody can be linked to at least a portion of the constant region.
- the constant region may be selected depending on whether antibody dependent cell mediated cytotoxicity, antibody dependent cellular phagocytosis and / or complement dependent cytotoxicity are required.
- human isotype IgG1 and IgG3 have complement dependent cytotoxicity and human isotype IgG2 and IgG4 do not have cytotoxicity.
- Human IgG1 and IgG3 also induce stronger cell mediated effector functions than human IgG2 and IgG4.
- the heavy chain variable region may be coupled to an IgG constant region comprising IgG1, IgG2, IgG2a, IgG2b, IgG3 and IgG4, and the light chain variable region may be associated with a kappa or lambda constant region.
- IgG constant region an appropriate one can be used as desired, for example, one derived from human or mouse.
- the heavy chain variable region disclosed herein may be linked to a mouse IgG2a constant region, or a human IgG1 constant region, which is SEQ ID NOs: 113 to 126 (including mouse IgG2a constant regions) or SEQ ID NOs: 127 to 140 (human IgG1 constants, respectively). Area).
- the light chain variable regions disclosed herein may be linked to a mouse kappa or human kappa constant region, which consists of SEQ ID NOs: 141 to 154 (mouse kappa constant region) and SEQ ID NOs: 155 to 168 (human kappa constant region), respectively. Can be represented.
- variable region sequences that may be combined with the variable regions disclosed herein are exemplary, and those skilled in the art may use other constant regions, including constant regions modified for stability, expression, manufacturability, or other desired characteristics, and the like. You will see that.
- the present application also includes one or more amino acid sequences having substantial sequence identity with one or more amino acid sequences disclosed herein.
- substantial identity is meant herein to maintain the effects disclosed herein in which sequence variations exist. In one embodiment it has about 90%, 95%, or 99% identity with the heavy chain variable region set forth in Table 1. In other embodiments about 90%, 95%, or 99% identity with the light chain variable regions set forth in Table 1. For example, for variants that exhibit 90%, 95%, or 99% identity with the sequence of an antibody or antigen binding fragment disclosed herein, any variation occurs in the backbone of the variable region rather than the CDRs.
- the disclosure also discloses nucleic acids encoding all or part of an antibody or antigen-binding fragment thereof disclosed herein.
- the nucleic acid is a polynucleotide encoding each chain of the antibody, or a fragment of the antibody, a mutation, derivative, or variant thereof, a light chain or heavy chain variable region or a polynucleotide encoding only a CDR, a polynucleotide sufficient for use as a hybridization probe, PCR or sequencing primers used for amplifying, identifying, analyzing, or mutagenesizing a polynucleotide encoding a polypeptide.
- the nucleic acid can be any length.
- Nucleic acids can be single stranded or double stranded, and can include RNA and / or DNA polynucleotides, and artificial variants thereof (eg, peptide nucleic acids).
- the nucleic acid encoding an antibody disclosed herein is a nucleic acid encoding a CDR disclosed herein, a full length antibody comprising a variable region, a variable region and a constant region comprising the CDR.
- Exemplary nucleic acid sequences include SEQ ID NOs: 169 to 182 (heavy chain comprising a mouse IgG2a constant region), SEQ ID NOs: 183 to 196 (heavy chain comprising a human IgG1 constant region), SEQ ID NOs: 197 to 210 (including a mouse kappa constant region) Light chain) and SEQ ID NOs: 211 to 224 (light chain comprising a human kappa constant region).
- the present application also includes one or more nucleic acid sequences having substantial sequence identity with one or more nucleic acid sequences disclosed herein.
- substantial identity is meant that the antibody or antigen-binding fragment encoded by the nucleic acid retains the effects disclosed herein, even if the mutation results in conservative substitutions or amino acid variations that do not involve amino acid substitutions.
- Antibodies or antigen binding fragments according to the invention have particularity and high affinity for ⁇ -Syn aggregates in particular.
- the affinity for the aggregates is K D ⁇ 1.0 ⁇ 10 ⁇ 9 M; In another embodiment, K D ⁇ 1.0 ⁇ 10 ⁇ 10 M; In another embodiment, K D ⁇ 1 ⁇ 10 ⁇ 11 M.
- Antibodies or antigen-binding fragments according to the present application having such a high affinity can be administered at lower doses compared to antibodies having lower affinity, eg, affinity greater than 10 ⁇ 7 M or 10 ⁇ 8 M. There is an advantage.
- antibodies or antigen-binding fragments according to the present application having a high affinity for ⁇ -Syn aggregates may form and / or accumulate ⁇ -Syn aggregates and / or cells may inhibit and / or reduce delivery of aggregates in the brain. Can be lowered.
- antibodies or antigen-binding fragments according to the present invention having a high affinity for ⁇ -Syn aggregates may reduce ⁇ -Syn aggregate formation outside the central nervous system, resulting in ⁇ -Syn forms bordering the cerebrovascular barrier.
- the present invention is not limited to the present invention, but the antibody or antigen-binding fragment according to the present invention may inhibit aggregate formation through the removal of monomer, or may remove both monomer and aggregate.
- the present application also relates to antibodies (and corresponding nucleic acids) comprising antibody light chain variable regions or antibody heavy chain variable regions and immunological functional fragments, derivatives, mutant proteins and variants of such light and heavy chain variable regions as shown in Tables 1A and 1B above. Sequence) is disclosed.
- nucleic acid sequences encoding the variable regions shown in Tables 1A and 1B.
- Such nucleic acid sequences include SEQ ID NOs: 169 to 182 (heavy chain comprising mouse IgG2a constant region), SEQ ID NOs: 183 to 196 (heavy chain comprising human IgG1 constant region), SEQ ID NOs: 197 to 210 (mouse kappa constant region) Light chain) and the nucleic acid sequence encoding the full-length antibody disclosed in SEQ ID NOs: 211 to 224 (light chain comprising a human kappa constant region), which are not separately described, and those skilled in the art will appreciate that the proteins of the variable region disclosed in Table 1 Based on the sequence, the nucleic acid sequence encoding it will be easily identified.
- variable regions of the heavy and light chains according to the present application can be variously combined.
- Such variously combined antibodies may be represented by "VHx / VLy", where "x” corresponds to the heavy chain variable region SEQ ID NO, and "y” corresponds to the sequence number of the light chain variable region.
- variable region according to the present invention may include but is not limited to the following combinations: VH85 / VL99, VH85 / VL100, VH85 / VL101, VH85 / VL102, VH85 / VL103, VH85 / VL104, VH85 / VL105, VH85 / VL106, VH85 / VL107, VH85 / VL108, VH85 / VL109, VH85 / VL110, VH85 / VL111, VH85 / VL112; VH86 / VL99, VH86 / VL100, VH86 / VL101, VH86 / VL102, VH86 / VL103, VH86 / VL104, VH86 / VL105, VH86 / VL106, VH86 / VL107, VH86 / VL108, VH86 / VL109, VH86 / VL
- Combinations of the various variable regions as mentioned above may be used as various types of antibodies including intact antibodies or scFV.
- Antibodies disclosed herein are polypeptides in which one or more CDRs are grafted, inserted, and / or linked.
- the antibody may have 1, 2, 3, 4, 5 or 6 CDRs.
- An antibody may thus be, for example, one heavy chain CDR1 (“CDRH1”), and / or one heavy chain CDR2 (“CDRH2”), and / or one heavy chain CDR3 (“CDRH3”), and / or one light chain.
- CDRs complementary determinants
- FRs frame regions
- heavy and light chain CDRs of an antibody according to the invention are shown in Tables 1a and 1b (or heavy chain CDR H1 is shown as SEQ ID NO: 1 to 14, H2 is SEQ ID NO: 15 to 28, H3 is represented by SEQ ID NO: 29 to 42, and light chain CDR L1 is a sequence).
- the present application also includes one or more amino acid sequences having substantial sequence identity with one or more amino acid sequences set forth in Tables 1A and 1B.
- substantial identity is meant herein to maintain the effects disclosed herein in which sequence variations exist.
- CDRs are included within the framework of the heavy and light chain variable regions that make up the regions involved in antigen binding and recognition.
- the variable region comprises at least three heavy or light chain CDRs within the framework region (Kabat et al. 1991, Sequences of Proteins of Immunological Interest, Public Health Service NIH, Bethesda, MD; see also Chothia and Lesk, J. Mol. Biol). 1987, 196: 901-917; Chothia et al. 1989, Nature 1989, 342: 877-883).
- the CDRs disclosed herein are used to define the antigen binding domains of typical antibody structures, and may also be included and used in various other polypeptide structures, as described herein.
- each CDR disclosed may be selected and combined independently of one another.
- antibodies with 1, 2, 3, 4, 5, or 6 independently selected CDRs can be generated.
- CDRs when CDRs are selected for combination, the same kind of CDRs are not used repeatedly, for example, antibodies are generally not prepared comprising two CDRH2 regions.
- Antibodies disclosed herein include monoclonal antibodies that bind ⁇ -Syn, in particular aggregates thereof.
- Monoclonal antibodies can be prepared using any technique known in the art. For example, it can be produced by immortalizing splenocytes harvested from an immunized transgenic animal. Spleen cells can be immortalized using any technique known in the art, for example by fusing them with myeloma cells to produce hybridomas.
- Myeloma cells for use in hybridoma-producing fusion procedures are preferably non-antibody-productive, have high fusion efficiency, and lack specific enzymes to support the growth of only the desired fusion cells (hybridoma). It is impossible to grow in a specific selection medium.
- Examples of suitable cell lines for use in mouse fusion include Sp-20, P3-X63 / Ag8, P3-X63-Ag8.653, NS1 / 1.Ag 4 1, Sp210-Ag14, FO, NSO / U, MPC-11 MPC11-X45-GTG 1.7 and S194 / 5XXO Bul;
- Examples of cell lines used for rat fusion include R210.RCY3, Y3-Ag 1.2.3, IR983F and 4B210.
- Other cell lines useful for cell fusion include U-266, GM1500-GRG2, LICR-LON-HMy2 and UC729-6.
- hybridoma cell lines harvest splenocytes from animals (e.g., transgenic animals with human immunoglobulin sequences, animals immunized with ⁇ -Syn immunogens), and the harvested splenocytes are fused to myeloma cell lines. It is produced by generating hybridoma cells, establishing a hybridoma cell line from the hybridoma cells, and identifying a hybridoma cell line that produces an antibody that binds to ⁇ -Syn.
- animals e.g., transgenic animals with human immunoglobulin sequences, animals immunized with ⁇ -Syn immunogens
- myeloma cell lines It is produced by generating hybridoma cells, establishing a hybridoma cell line from the hybridoma cells, and identifying a hybridoma cell line that produces an antibody that binds to ⁇ -Syn.
- Monoclonal antibodies secreted by hybridoma cell lines can be purified using techniques known in the art.
- Antibodies can also be modified in a variety of ways for a variety of purposes.
- Chimeric and humanized antibodies are also provided.
- Chimeric antibodies are antibodies in which polypeptide fragments derived from different antibodies are covalently linked to form an immunologically functional light chain, heavy chain or fragment thereof.
- a portion of the light and / or heavy chains of a chimeric antibody are sequences belonging to a particular species or a specific class or subtype, and the remaining sequences belong to another species or another class or subtype.
- CDR grafting may be referred to, for example, in US Pat. Nos. 6,180,370, 5,693,762, 5,693,761, 5,585,089, and 5,530,101.
- the purpose of preparing chimeric antibodies is to include the maximum number of amino acids found in the organism in which the antibody is used.
- One example is a “CDR-grafted” antibody, wherein the antibody comprises one or more CDRs from a particular species, or from a specific class or subtype, with the remainder being from another species, or another class or subtype. It is derived from an antibody.
- the variable regions or selected CDRs of rodent antibodies are implanted into human antibodies to replace the naturally occurring variable regions or CDRs of human antibodies.
- humanized antibodies are produced from monoclonal antibodies originally produced in non-human animals. In such monoclonal antibodies, the specific amino acid residues that make up the non-antigen recognition portion of the antibody are typically modified to be homologous to the corresponding residues of the corresponding isotype of the human antibody. Humanization can be performed, for example, by substituting at least a portion of a rodent variable region with a corresponding region of a human antibody using various known methods (US Pat. Nos. 5,585,089 and 5,693,762; Jones et al. Nature 1986, 321: 522-525; Riechmann et al., Nature 1988, 332: 323-27; Verhoeyen et al., Science 1988, 239: 1534-1536).
- the CDRs of the light and heavy chain variable regions of the antibodies disclosed herein are grafted into framework regions (FRs) of antibodies derived from the same or different species phylogenetically.
- the CDRs of the heavy and light chain variable regions disclosed herein can be transplanted into conserved human FRs.
- conserved human FR several kinds of human heavy or light chain amino acid sequences can be aligned and from which FR can derive consensus amino acid sequences.
- the FRs of the heavy or light chains disclosed herein are replaced with FRs of different heavy or light chains.
- the specific amino acids found only in the FRs of the heavy and light chains of the anti- ⁇ -Syn antibody are not replaced, while the remaining FR amino acids can be replaced.
- Particular amino acids are those specific amino acids which are typically present at positions not observed within the FR.
- the variable regions implanted from one heavy or light chain can be used with constant regions that are different from the constant regions of a particular heavy or light chain as disclosed herein.
- the transplanted variable region is part of a single chain Fv antibody.
- the CDRs of the light and heavy chain variable regions of the antibodies disclosed herein can be used by implanting into all antibodies.
- a constant antibody derived from a species other than human may be used with a hybrid antibody combined with a variable region derived from human.
- Fully human antibodies are also disclosed. Fully human antibodies specific for a given antigen (“complete human antibody”) can be prepared without exposing the human to the antigen.
- One method of producing fully human antibodies is to "humanize" the mouse humoral immune system. The introduction of a human immunoglobulin (Ig) locus into mice in which the endogenous Ig gene has been inactivated can produce fully human monoclonal antibodies (mAb) in the mouse. Using fully human antibodies can minimize the immunogenic and allergic reactions that can be caused by administering mice or mouse-derived mAbs to humans.
- Ig human immunoglobulin
- mAb monoclonal antibodies
- Fully human antibodies can be generated by immunizing a transgenic animal (typically a mouse) that is deficient in endogenous immunoglobulin production and can produce human antibodies.
- Antigens for this purpose typically have six or more consecutive amino acids and are optionally conjugated to a carrier such as hapten.
- a carrier such as hapten.
- a transgenic animal may be transfected with an endogenous mouse immunoglobulin locus encoding the mouse heavy and light chain immunoglobulin chains, and a loci fragment comprising a human genomic DNA encoding human heavy and light chain proteins may be present in the mouse. It is inserted into the genome and produced. Partially modified mice that partially contain the human immunoglobulin locus are cross-crossed to generate mice incorporating an intact human immunoglobulin locus. When an immunogen is administered to the animal, the antibody immunospecific to the immunogen but comprising the variable region has a human amino acid sequence other than murine.
- This method is for example referred to WO96 / 33735 and WO94 / 02602.
- antigen-specific human mAbs with the desired specificity can then be generated and selected from transgenic mice, eg, those described above.
- Such antibodies can be cloned and expressed using appropriate vectors and host cells, or the antibodies can be harvested from cultured hybridoma cells.
- Fully human antibodies can also be derived from phage-display libraries (Hoogenboom et al., J. Mol. Biol. 1991, 227: 381; and Marks et al., J. Mol. Biol. 1991, 222: 581).
- Phage display technology is a method that mimics a sort of immune selection by displaying antibody repertoire on the surface of a filamentous bacteriophage, from which phage that binds the antigen of interest is selected.
- One such technique may be found in the examples herein or in PCT Publication WO 99/10494.
- humanized ⁇ -Syn antibodies herein are selected via phage display methods (Krebber et al., J. Immunol. Methods. 1997, 201: 35).
- Antibodies disclosed herein also include bispecific antibodies and bifunctional antibodies comprising one or more CDRs or one or more variable regions as described above.
- bispecific or bifunctional antibodies are artificial hybrid antibodies with two different heavy / light chain pairs and two different binding sites.
- Bispecific antibodies can be prepared using various methods such as fusion of hybridomas or ligation of Fab 'fragments (Songsivilai and Lachmann, Clin. Exp. Immunol. 1990, 79: 315-321; Kostelny et al. , J. Immunol. 1992, 148: 1547-1553).
- the antibody according to the invention may take the form of a bispecific antibody further comprising binding to a carrier for delivery through the vascular brain barrier.
- receptors in the system of receptor mediated transcytosis are: insulin receptor (eg, human insulin receptor), transferrin receptor, LRP (eg, LRP1, LRP6 and LRP8), melanocortin receptor, nicotinic acetylcholine receptor, VACM-1 receptor, IGFR, EPCR, EGFR, TNFR, Leptin receptor, M6PR, Lipoprotein receptor, NCAM, LIFR, LfR, MRP1, AchR, DTr, Glutathione transporter, SR-B1, MYOF, TFRC, ECE1, LDLR, PVR, CDC50A, SCARF1, MRC1, HLA-DRA, RAMP2, VLDLR, STAB1, TLR9, CXCL16, NTRK1, CD74, DPP4, endothelial
- Antibodies disclosed herein are also variants of the antibodies disclosed herein above.
- some of the antigens include conservative amino acid substitutions in one or more residues of the heavy or light chain, variable region or CDR sequences disclosed above.
- Naturally-occurring amino acids can be classified as follows based on characteristics common to the side chain properties. 1) hydrophobic: norleucine, Met, Ala, Val, Leu, Ile; 2) neutral hydrophilic: Cys, Ser, Thr, Asn, Gln; 3) acidic: Asp, Glu; 4) basic: His, Lys, Arg; 5) residues that influence chain direction: Gly, Pro; And 6) aromatic: Trp, Tyr, Phe.
- Conservative amino acid substitutions refer to substitutions with other residues belonging to the same class of the class. Conservative amino acid substitutions may also include non-naturally-occurring amino acid residues such as peptide mimetics, which residues are typically introduced by chemical synthesis, not by cell.
- Non-conservative substitutions include substitutions with residues belonging to other classes of the above classes. Such substitutions may be introduced into regions of the antibody that are homologous to human antibodies or into non-homologous regions.
- a hydropathic index representing the hydrophobicity or hydrophilicity of amino acids may be considered.
- the hydropathic profile of a protein is calculated by assigning an index to each amino acid and then repeatedly averaging these values according to the polypeptide.
- index of each amino acid is specified as follows based on hydrophobicity and charge characteristics: isoleucine (+4.5); Valine (+4.2); Leucine (+3.8); Phenylalanine (+2.8); Cysteine / cystine (+2.5); Methionine (+1.9); Alanine (+1.8); Glycine (-0.4); Threonine (-0.7); Serine (-0.8); Tryptophan (-0.9); Tyrosine (-1.3); Proline (-1.6); Histidine (-3.2); Glutamate (-3.5); Glutamine (-3.5); Aspartate (-3.5); Asparagine (-3.5); Lysine (-3.9); And arginine (-4.5).
- a protein produced by substitution between similar amino acids is an immunologically active protein as disclosed herein. It may be performed based on hydrophilicity.
- the maximum local average hydrophilicity value of a protein, determined by the hydrophilicity of adjacent amino acids is related to the biological properties of the protein, such as immunogenicity and antigen-binding.
- hydrophilicity values of the amino acid residues are as follows: arginine (+3.0); Lysine (+3.0); Aspartate (+ 3.0 ⁇ 1); Glutamate (+ 3.0 ⁇ 1); Serine (+0.3); Asparagine (+0.2); Glutamine (+0.2); Glycine (0); Threonine (-0.4); Proline (-0.5 ⁇ 1); Alanine (-0.5); Histidine (-0.5); Cysteine (-1.0); Methionine (-1.3); Valine (-1.5); Leucine (-1.8); Isoleucine (-1.8); Tyrosine (-2.3); Phenylalanine (-2.5) and tryptophan (-3.4).
- substitutions of amino acids with hydrophilicity values within ⁇ 2, within ⁇ 1, or within ⁇ 0.5 are included.
- Epitopes can also be identified from primary amino acid sequences based on hydrophilicity. These regions are also referred to as “epitope core regions”.
- one of ordinary skill in the art can perform structure-functional assays to identify residues that are important for activity or structure in similar polypeptides. This analysis allows one protein to find residues corresponding to amino acid residues that are important for the activity or structure of similar proteins, and predict amino acid residues that are important in the protein of interest. One skilled in the art can substitute the amino acid residues chemically similar to the predicted important amino acid residues.
- One skilled in the art can also predict amino acid residues associated with the three-dimensional structure of an antibody based on the three-dimensional structure of the similar polypeptide and its associated amino acid sequence analysis.
- One of ordinary skill in the art does not introduce a drastic change since amino acid residues that are predicted to be present on the surface of the protein may be involved in important interactions with other molecules.
- one skilled in the art can generate test variants that comprise a single amino acid substitution at each desired amino acid residue. These variants can then be screened using avidity for antigen to obtain information about which amino acid substitutions meet the purpose. Using this information, one of ordinary skill in the art can readily determine which positions can be substituted and which positions should be avoided.
- the position of substitution can also be determined based on the secondary structure of the protein.
- one method of predicting secondary structure is based on homology modeling. For example, two polypeptides or proteins with greater than 30% sequence identity, or greater than 40% similarity can have similar structural phases (Holm et al., Nucl. Acid. Res. 1999, 27: 244). -247). Additional methods of predicting secondary structure include "threading” (Jones, Curr. Opin. Struct. Biol. 1977, 7: 377-387; Sippl et al., Structure 1996, 4: 15-19) , “Profile Analysis” (Bowie et al., Science 1991, 253: 164-170; Gribskov et al., Meth.
- amino acid substitutions result in (1) decreased susceptibility to proteolysis, (2) reduced susceptibility to oxidation, (3) alter binding affinity to form protein complexes, (4) antigen binding affinity Alterations are made to alter the chemical composition and / or to impart other physicochemical or functional properties to the protein (4).
- single or plural amino acid substitutions including conservative substitutions, can be performed in the antibody at other parts of the antibody than at the domains involved in intermolecular contact.
- conservative amino acid substitutions that do not substantially change the structural characteristics of the parent sequence may be used, for example, substitutions with one or more amino acids that do not alter the secondary structure of the parent antibody.
- polypeptide secondary and tertiary structures examples include Proteins, Structures and Molecular Principles (Creighton, Ed.), 1984, W. H. New York: Freeman and Company; Introduction to Protein Structure (Branden and Tooze, eds.), 1991, New York: Garland Publishing; And Thornton et al., Nature 1991, 354: 105.
- Further preferred antibody variants include variants in which one or more cysteine residues are deleted in the parent sequence, or in which the cysteine residues are substituted with other amino acids such as serine. Cysteine variants are particularly useful when the antibody needs to be folded back into a structure with biological activity. Cysteine variants may have fewer cysteine residues as compared to the parent antibody and are generally included in even numbers to minimize interactions due to unpaired cysteine.
- the heavy and light chains, variable region domains and CDRs disclosed herein can be used to prepare polypeptides comprising antigen binding regions capable of specific binding to ⁇ -Syn.
- one or more of the CDRs disclosed in Table 1 may be noncovalently or covalently linked to a molecule, such as a polypeptide, to be used as an immunoadhesive molecule.
- Such immunoadhesive molecules may be those in which CDRs are incorporated into large polymers, or CDRs may be linked to other polypeptides.
- Such immunoadhesive molecules allow specific binding to the antigen or target of interest, such as ⁇ -Syn or epitope, to a polypeptide or other substance linked thereto.
- peptide mimetics based on the variable regions and CDRs disclosed herein.
- Such mimetics can be peptides, non-peptides, or combinations of peptides and non-peptides, see: Fauchere, Adv. Drug Res. 1986, 15: 29; Veber and Freidinger, 1985, TINS p. 392; And Evans et al., J. Med. Chem. 1987, 30: 12 29.
- Peptide mimetics that are structurally similar to one useful polypeptide have similar effects to the original polypeptide.
- Such compounds can be developed using computerized molecular modeling.
- peptide mimetics are structurally similar to antibodies that exhibit the desired biological activity, eg, the ability to specifically bind ⁇ -Syn herein, but wherein one or more peptide bonds are well known in the art.
- -CH 2 NH-, -CH 2 S-, -CH 2 -CH 2- , -CH-CH- (cis and trans), -COCH 2- , -CH (OH) CH 2 -and CH 2 May be replaced with a bond selected from SO-.
- residues of one or more conserved sequences can be substituted with the same type of D-amino acids (eg, D-lysine instead of L-lysine).
- molecules capable of cyclizing peptides can introduce cross-linking cysteine residues internally to produce peptides that structurally constrain conservative sequences (Rizo and Gierasch, Ann. Rev. Biochem. 1992, 61: 387). ).
- Derivatized antibodies may comprise any molecule or substance that provides the desired properties to the antibody or fragment thereof, eg, increased half-life in a particular use.
- Derivatized antibodies can be, for example, detectable (or labeled) residues (eg, radioactive, colorimetric, antigenic or enzymatic molecules, detectable beads (eg, magnetic or electron density (eg gold) beads), or Other molecules (e.g., molecules that bind to biotin or streptavidin), therapeutic or diagnostic moieties (e.g., radioactive, cytotoxic, or pharmaceutically active moieties), or special uses (e.g., subjects, e.g., For example, molecules that increase the suitability of the antibody for administration to a human subject, or other in vivo or in vitro use).
- detectable (or labeled) residues eg, radioactive, colorimetric, antigenic or enzymatic molecules, detectable beads (eg, magnetic or electron density (eg gold) beads), or Other molecules (e.
- TTR transthyretin
- TTR or TTR variants include, for example, dextran, poly (n-vinyl pyrrolidone), polyethylene glycols, propropylene glycol homopolymers, polypropylene oxide / ethylene oxide copolymers, polyoxyethylated polyols and polyvinyl alcohols. It can be chemically modified with a chemical selected from the group consisting of.
- ⁇ -Syn binding proteins proteins or polys different from ⁇ -Syn binding proteins, which can be prepared, for example, by expression of recombinant fusion proteins comprising heterologous polypeptides fused at the N-terminus or C-terminus of the ⁇ -Syn protein.
- Covalent or aggregate conjugates of peptides may be a heterologous signal (or leader) polypeptide, such as a yeast alpha-factor leader, or a peptide, such as an epitope tag.
- the ⁇ -Syn antibody-containing fusion protein may comprise added peptides to facilitate purification or identification of ⁇ -Syn binding proteins (eg, poly-His).
- ⁇ -Syn binding proteins are also described in Hopp et al., Bio / Technology 1988, 6: 1204; And FLAG peptides as described in US Pat. No. 5,011,912. FLAG peptides are highly antigenic, acting as epitopes that can be reversibly bound by specific monoclonal antibodies (mAb), allowing for rapid identification and easy purification of recombinant proteins.
- mAb monoclonal antibodies
- the present invention relates to oligomers comprising a plurality of ⁇ -Syn-binding polypeptides that are bound through covalent or non-covalent interactions between peptide residues fused to an ⁇ -Syn binding protein.
- bound peptide may be a peptide linker (spacer), or a peptide such as a leucine zipper having properties that promote oligomerization.
- the oligomer comprises two to four ⁇ -Syn binding proteins.
- the ⁇ -Syn binding protein residues of the oligomer may be in any form as described above, eg, variants or fragments.
- the oligomer comprises an ⁇ -Syn binding protein having ⁇ -Syn binding activity.
- oligomers are prepared using polypeptides derived from immunoglobulins.
- the preparation of fusion proteins comprising heterologous polypeptides fused to various sites (including the Fc domain) of antibody-derived polypeptides is described, for example, in Ashkenazi et al., Proc. Natl. Acad. Sci. USA 1991, 88: 10535; Byrn et al., Nature 1990, 344 : 677; And Hollenbaugh et al., 1992 "Construction of Immunoglobulin Fusion Proteins", in Current Protocols in Immunology, Suppl. 4, pages 10.19.1-10.19.11.
- dimer comprising two fusion proteins in which an ⁇ -Syn binding protein is fused to an Fc region of an antibody.
- dimers for example, insert a gene fusion encoding a fusion protein into an appropriate expression vector, express the gene fusion in a host cell transformed with the recombinant expression vector, and the expressed fusion protein resembles an antibody molecule. By making it possible to combine them easily, wherein an interchain disulfide bond is formed between the Fc residues to obtain a dimer.
- Fc polypeptide refers to a polypeptide derived from the Fc region of an antibody, including wild type or mutant forms. Also included are truncated forms of the polypeptide comprising a hinge region that promotes dimerization. Fusion proteins comprising Fc residues and oligomers formed therefrom have the advantage of being easily separated by affinity chromatography using Protein A or Protein G columns.
- Fc polypeptides examples include those described in US Pat. Nos. 5,426,048 and 5,262,522, 5,457,035 and Baum et al., EMBO J. 1994, 13: 3992-4001.
- the amino acid sequence of this mutant protein was replaced with wild type amino acid residue 19, Leu to Ala, amino acid residue 20 from Leu to Glu, amino acid 22 from Gly to Ala. Mutant proteins have reduced affinity for Fc receptors.
- variable region of the heavy and / or light chain of the ⁇ -Syn binding protein as disclosed herein may be substituted with the variable region of the heavy and / or light chain of another antibody.
- an antibody or antigen binding fragment according to the present disclosure may comprise one or more labels.
- Label means any detectable substance.
- suitable labeling groups include radioisotopes or radionuclides (eg 3 H, 14 C, 15 N, 35 S, 90 Y, 99 Tc, 111 In, 125 I, 131 I), fluorescent groups (eg FITC, Rhodamine, lanthanide phosphors), enzyme groups (e.g., horseradishperoxidase, ⁇ -galactosidase, luciferase, alkaline phosphatase), chemiluminescent groups, biotinyl groups, or certain recognized by secondary reporters
- Polypeptide epitopes of eg, leucine zipper pair sequences, secondary antibody binding sites, metal binding domains, epitope tags
- the labeler is coupled to the antibody through spacer arms of various lengths to reduce potential steric hindrance.
- spacer arms of various lengths to reduce potential steric hindrance.
- effector group refers to any substance that functions as a cytotoxic agent coupled to an antibody.
- suitable effector groups are radioisotopes or radionuclides (eg 3 H, 14 C, 15 N, 35 S, 90 Y, 99 Tc, 111 In, 125 I, 131 I).
- the effector group is coupled to the antibody through spacer arms of various lengths to reduce potential steric hindrance.
- labels can be classified according to the method of detection: a) radioactive or isotopic labels; b) magnetic labels (eg magnetic particles); c) redox active moieties; d) optical dyes; Enzyme groups (eg horseradishperoxidase, ⁇ -galactosidase, luciferase, alkaline phosphatase); e) biotinyl groups; And f) certain polypeptide epitopes recognized by the secondary reporter (eg, leucine zipper pair sequences, binding sites for secondary antibodies, metal binding domains, epitope tags, etc.).
- the labeling group is coupled to the antibody through spacer arms of various lengths to reduce potential steric hindrance.
- Various methods for labeling proteins are known in the art.
- the label includes, but is not limited to, optical dyes including chromophores, phosphors, and phosphors.
- the phosphor may be a low molecular phosphor or a proteinaceous phosphor.
- Fluorescent label means any molecule that can be detected through the fluorescent properties of the material.
- fluorescent labels include fluorescein, rhodamine, tetramethyltamine, eosin, erythrosine, coumarin, methyl-coumarin, pyrene, malachite green, stilbene, lucifer yellow, Cascade BlueJ, Texas Red, IAEDANS, EDANS, BODIPY FL, LC Red 640, Cy 5, Cy 5.5, LC Red 705, Oregon Green, Alexa Fluor dyes (Alexa Fluor 350, Alexa Fluor 430, Alexa Fluor 488, Alexa Fluor 546, Alexa Fluor 568 , Alexa Fluor 594, Alexa Fluor 633, Alexa Fluor 647, Alexa Fluor 660, Alexa Fluor 680), Cascade Blue, Cascade Yellow and R-Picoerythrin (PE), FITC, Cy5, Cy5.5, and Cy7 But it is not limited to this.
- Proteinaceous fluorescent labeling materials include green fluorescent proteins including GFPs of Renilla, Ptilosarcus or Aequorea species (Chalfie et al., Science 1994, 263: 802-805). , EGFP (Clontech Labs., Inc., Genbank Accession Number U55762), blue fluorescent protein (BFP, Quantum Biotechnologies, Inc., Quebec, Canada; Stauber, Biotechniques 1998, 24: 462-471; Heim et al., Curr. 1996, 6: 178-182), enhanced yellow fluorescent protein (EYFP, Clontech Labs., Inc.), luciferase (Ichiki et al., 1993, J. Immunol. 150: 5408-5417), ⁇ galacto Sidases (Nolan et al., 1988, Proc. Natl. Acad. Sci. USA 85: 2603-2607).
- the present disclosure relates to nucleic acids that hybridize to nucleic acids disclosed herein under certain hybridization conditions.
- Methods of hybridizing nucleic acids are well known in the art. See, for example, Current Protocols in Molecular Biology, John Wiley & Sons, N.Y. (1989), 6.3.1-6.3.6.
- Stringent hybridization conditions herein include pre-clean solution containing 5 ⁇ sodium chloride / sodium citrate (SSC), 0.5% SDS, 1.0 mM EDTA, pH 8.0; Hybridization buffer of about 50% formamide, 6x SSC, and a hybridization temperature of 55 ° C.
- hybridization conditions are hybridized by one or more washes at 6 ⁇ SSC at 45 ° C., then at 0.1 ⁇ SSC, 0.2% SDS at 68 ° C.
- nucleic acids comprising at least 65%, 70%, 75%, 80%, 85%, 90%, 95%, 98% or 99% identical nucleotide sequences between sequences are typically required to maintain hybridization with each other. Appropriate hybridization conditions may be selected.
- Nucleic acids disclosed herein also include mutant variants. Mutations into nucleic acids can induce changes in the amino acid sequence of the polypeptide (antibody or antibody derivative) encoded by the nucleic acid. Mutations can be introduced using any technique known in the art. For example, site-directed mutagenesis methods, random mutagenesis methods can be used. The nucleic acid mutants thus prepared are selected for polypeptides having the desired characteristics.
- Mutations can be introduced into the nucleic acid without significantly altering the biological activity of the polypeptide encoded by the nucleic acid.
- nucleotide substitutions can be performed that result in amino acid substitutions at non-essential amino acid residues.
- one or more mutations can be introduced into the nucleic acid that selectively alter the biological activity of the polypeptide encoded by the nucleic acid.
- mutations can change the biological activity quantitatively or qualitatively. Examples of quantitative changes include increasing, decreasing or eliminating activity. Examples of qualitative changes include changes in the specificity of the antibody for the antigen.
- nucleic acids encoding any of the antibodies disclosed herein can be mutated to alter the amino acid sequence using molecular biology techniques well known in the art.
- nucleic acid molecules suitable for use as primers or hybridization probes for detection of nucleic acid sequences disclosed herein refer to portions of full-length nucleic acid sequences such as, for example, fragments of nucleic acids encoding full-length polypeptides that can be used as probes or primers or fragment nucleic acids encoding active portions ( ⁇ -Syn binding portions) of the polypeptides. It may include.
- Primers and probes prepared based on nucleic acid sequences can be used to detect transcripts encoding nucleic acids or similar nucleic acids, or polypeptides disclosed herein. In one embodiment such probes can be used to identify cells expressing a polypeptide according to the present disclosure. Primers or probes may be labeled with a label such as a radioisotope, fluorescent compound, enzyme, or enzyme co-factor.
- the present disclosure also provides a vector comprising a nucleic acid encoding a polypeptide according to the present invention or a portion thereof (eg, a fragment comprising one or more CDRs or one or more variable region domains).
- vectors include, but are not limited to, plasmids, viral vectors, non-episomal mammalian vectors, and (recombinant) expression vectors.
- Recombinant expression vectors can include nucleic acids in a form suitable for expression of nucleic acids in a host cell.
- the recombinant expression vector comprises one or more regulatory sequences selected based on the host cell used for expression, which regulatory sequences are operably linked to the nucleic acid sequence to be expressed.
- Regulatory sequences include promoters that can regulate the expression of nucleotide sequences in many types of host cells, such as, for example, the SV40 early gene enhancer, the Raus sarcoma virus promoter and the cytomegalovirus promoter; Or tissue-specific regulatory sequences (eg, Voss et al., 1986, Trends Biochem. Sci. 11: 287, Maniatis et al., 1987, Science 236) that regulate the expression of nucleotide sequences only in specific host cells.
- tissue-specific regulatory sequences eg, Voss et al., 1986, Trends Biochem. Sci. 11: 287, Maniatis et al., 1987, Science 236
- metallothionine promoters that act on mammalian cells, for example, in direct expression of nucleotide sequences in response to particular treatment or conditions, and on both prokaryotic and eukaryotic systems.
- tet-reactive and / or streptomycin reactive promoters see homology.
- the selected expression vector can be delivered into a host cell and used for the production of a protein encoded by a nucleic acid as disclosed herein.
- a host cell into which a recombinant expression vector has been introduced.
- the host cell can be any prokaryotic cell (eg E. coli ) or eukaryotic cell (eg yeast, insect, or mammalian cell).
- Vector DNA can be introduced into prokaryotic or eukaryotic cells through known transformation or transduction techniques.
- eukaryotic cells eg yeast, insect, or mammalian cell.
- Vector DNA can be introduced into prokaryotic or eukaryotic cells through known transformation or transduction techniques.
- genes encoding selectable markers such as antibiotic resistance markers, are generally introduced into the host cell along with the gene of interest.
- Preferred selectable markers include those that provide resistance to drugs such as G418, hygromycin and mesotrisate. Selection of cells stably introduced with the desired nucleic acid can be achieved by selecting only those cells that survive through drug treatment.
- Non-human antibodies herein include, for example, any antibody-producing animal, such as a mouse, rat, rabbit, goat, donkey, or non-human primate (eg cynomolgus or rhesus monkey). Monkeys) or apes (eg chimpanzees)).
- Non-human antibodies can be produced by immunizing an animal using methods known in the art.
- Antibodies can be polyclonal, monoclonal, or can be synthesized in host cells by expressing recombinant DNA.
- Fully human antibodies can be prepared by administering the antigen to a transgenic animal comprising a human immunoglobulin locus or by treating the phage display library expressing a repertoire of human antibodies with the antigen to select the desired antibody.
- Monoclonal antibodies can be generated by a variety of techniques, including conventional monoclonal antibody methods, such as standard somatic cell hybridization techniques of Kohler and Milstein, 1975, Nature 256: 495. .
- a method of transforming B-lymphocytes into a virus or oncogene can be used.
- the murine system is an animal system that is widely used for the production of hybridoma cells. Techniques for isolation of splenocytes of immunized mice for immunization protocols and fusions are well known in the art.
- B cells derived from immunized mice in this method are fused with immortalized fusion partner cells, such as, for example, murine myeloma cell lines.
- Rats or other mammals may be immunized in lieu of mice as needed and such animals may be fused with murine myeloma cell lines to generate hybridomas.
- myeloma cell lines used for fusion may be those derived from animals other than mice. Fusion procedures for preparing such hybridomas are also well known.
- Single chain antibodies disclosed herein can be generated by linking heavy and light chain variable domain (Fv region) fragments using amino acid bridges (short peptide linkers).
- Such single chain Fv (scFv) can be prepared by fusing DNA encoding a peptide linker between DNAs encoding two variable domain polypeptides (V L and V H ).
- the polypeptides produced can form antigen-binding monomers by folding, or multimers (eg, dimers, trimers or tetramers), depending on the length of the flexible linker between the two variable domains. (Kortt et al., 1997, Prot. Eng. 10: 423; Kortt et al., 2001, Biomol. Eng. 18: 95-108).
- Single chain antibodies disclosed herein include, but are not limited to, scFv comprising domain combinations of the heavy and light chain variable regions described in Tables 1a and 1b, or combinations of light and heavy chain variable domains comprising the CDRs disclosed in Table 1.
- the antibodies disclosed herein can also be altered to different subtype antibodies, through subtype switching.
- IgG antibodies can be derived from, for example, IgM antibodies, and vice versa.
- This technique allows the production of new antibodies that have the same biological properties as the parent antibody and antigen binding properties but which differ in the subtype different from the parent antibody.
- Recombinant DNA technology can be used for this switching.
- DNA encoding the constant domains of an isotype antibody of interest can be used in the preparation of such antibodies. See, eg, Lantto et al., 2002, Methods Mol. Biol. 178: 303-316.
- the antibodies disclosed herein include, for example, variable domain combination antibodies disclosed herein switched to the desired isotype (eg, IgA, IgG1, IgG2, IgG3, IgG4, IgE, and IgD).
- variable domain combination antibodies disclosed herein switched to the desired isotype eg, IgA, IgG1, IgG2, IgG3, IgG4, IgE, and IgD.
- Such techniques include, for example, chain shuffling performed by display of an immunoglobulin variable domain gene repertoire on the surface of a filament bacteriophage called phage display. Additional techniques may be referred to those described in Marks et al., 1992, BioTechnology 10: 779.
- ⁇ -Syn antibodies may be further modified in various ways.
- it when used for therapeutic purposes, it may be conjugated, ie, PEGylated, with polyethylene glycol to increase serum half-life or to enhance protein delivery.
- the variable regions of the antibodies or fragments thereof herein may be fused with the Fc regions of different antibody molecules.
- the Fc region used for this purpose does not bind complement and thus is modified in such a way that the incidence of cell lysis in the patient is reduced when the fusion protein is used as a therapeutic agent.
- the antibodies or functional fragments thereof herein may be conjugated with human serum albumin to enhance the serum half-life of the antibody or antigen-binding fragment thereof.
- TTR transthyretin
- substantial alterations in the functional and / or biochemical characteristics of the antibodies disclosed herein may, for example, comprise (a) the structure of the molecular backbone within the substitution site, such as a sheet or helical form, (b) the target site It can be achieved through substitution within the amino acid sequences of the heavy and light chains, which significantly affects the charge or hydrophobicity of the molecule or (c) the bulkiness of the side chains.
- Amino acid substitutions (conservative or non-conservative) of the antibodies disclosed herein can be performed by those skilled in the art by applying conventional techniques. Amino acid substitutions can be used to identify important residues of the antibodies disclosed herein, to increase or decrease the affinity of these antibodies for human ⁇ -Syn, or to change the binding affinity of other antibodies disclosed herein.
- the present disclosure also provides expression systems and constructs in the form of plasmids, expression vectors, transcription or expression cassettes comprising at least one polynucleotide as described above, and host cells comprising such expression systems or constructs.
- the antibodies disclosed herein can be prepared using a number of conventional techniques.
- ⁇ -Syn antibodies can be produced by recombinant expression systems using any technique known in the art.
- Monoclonal Antibodies, Hybridomas A New Dimension in Biological Analyses, Kennet et al. (eds.) Plenum Press, New York (1980); And Antibodies: A Laboratory Manual, Harlow and Lane (eds.), Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (1988).
- Antibodies can be expressed in hybridoma cell lines or cell lines other than hybridomas.
- Expression constructs encoding antibodies can be used to transform mammalian, insect or microbial host cells.
- Constructs such as plasmids can be performed using any of a variety of known methods for introducing polynucleotides into host cells, as described above. The specific method may vary depending on the type of host cell. Methods of introducing heterologous polynucleotides into mammalian cells are well known in the art and include, for example, dextran mediated delivery, calcium phosphate precipitation, polybrene mediated delivery, protoplast fusion, electroporation, liposomes. Encapsulation of the delivered polynucleotide, mixing of nucleic acid with positively charged lipids, and direct microinjection of DNA into the nucleus, but is not limited thereto.
- Recombinant expression constructs typically comprise a nucleic acid molecule encoding a polypeptide comprising one or more of the following: one or more CDRs disclosed herein; Light chain constant region; Light chain variable region; Heavy chain constant regions (eg, CH 1, CH 2 and / or CH 3); And / or other scaffold portions of ⁇ -Syn antibodies.
- These nucleic acid sequences are inserted into an appropriate expression vector using standard ligation techniques.
- the heavy or light chain constant region is linked to the C-terminus of the anti- ⁇ -Syn-specific heavy or light chain variable region and ligated into an expression vector.
- the vector is chosen to be able to function in the particular host cell in which the vector is used.
- a vector is used that uses a protein reporter, such as protein-fragment complementation analysis using dihydrofolate reductase as disclosed in US Pat. No. 6,270,964.
- Suitable expression vectors are commercially available, for example, from companies such as Life Technologies or BD Biosciences. Examples of other vectors useful for cloning and expressing antibodies and fragments are described in Bianchi and McGrew, 2003, Biotech. Biotechnol. Bioeng. 84: 439-44; Methods Enzymol., Vol. 185 (D. V. Goeddel, ed.), 1990, New York: Academic Press.
- expression vectors used in any host cell will include base sequences necessary for plasmid maintenance and cloning and expression of exogenous nucleotide sequences.
- base sequences will typically comprise one or more of the following nucleotide sequences: a promoter, one or more enhancer sequences, an origin of replication, a transcription termination sequence, an intact intron sequence comprising a donor and acceptor splicing site, a polypeptide A sequence encoding a leader sequence for secretion, a ribosomal binding site, a polyadenylation sequence, a polylinker region for inserting a nucleic acid encoding a expressed polypeptide, and a selectable marker sequence.
- the vector may comprise an oligonucleotide molecule located at the 5 'or 3' end of the "tag" -encoding sequence, ie the ⁇ -Syn binding protein coding sequence;
- the oligonucleotide sequence may encode polyHis (eg hexaHis), or other “tags” present in commercial antibodies, such as FLAG ® , HA (hemagglutinin influenza virus), or myc.
- tags are typically fused and expressed in polypeptides and can function as a means of affinity purification or detection upon isolation of ⁇ -Syn binding proteins in host cells. Affinity purification can be accomplished, for example, by column chromatography using antibodies to tags as an affinity matrix.
- these tags can then be removed from the purified ⁇ -Syn binding protein by various means, including the use of specific peptidase.
- the base sequence described above may be homologous, heterologous, or hybrid, synthetic or native. As such, if the base sequence can be activated and can function in a host cell apparatus, any prokaryotic or eukaryotic organism, any vertebrate or invertebrate organism, or one from any plant can be used.
- base sequences included in a vector can be obtained by several methods well known in the art. Typically, base sequences as used herein may be identified in advance through mapping and / or restriction enzyme cleavage, to be isolated from appropriate tissue sources using appropriate restriction enzymes. In some cases, the entire nucleotide sequence of the base sequence may be known and the base sequence may be synthesized using the nucleic acid synthesis or cloning methods disclosed herein.
- the base sequence may be prepared using polymerase chain reaction (PCR) and / or oligonucleotides and / or base sequences from appropriate probes, eg, from the same or different species. Can be obtained by screening genomic libraries with fragments. If the base sequence is not known, fragments of DNA comprising the base sequence may be separated from fragments of larger DNA that may include, for example, coding sequences or even other gene (s). The desired fragment can be separated using restriction enzyme treatment, agarose gel purification and column chromatography or other methods known to those skilled in the art. It will be apparent to one skilled in the art that the appropriate enzyme may be selected to achieve this goal.
- PCR polymerase chain reaction
- the origin of replication is required for the amplification of the vector in the host cell and is typically included in commercially available prokaryotic expression vectors. If the selection vector does not include a origin of replication, it can be chemically synthesized based on known sequences and ligated into the vector.
- the origin of replication of plasmid pBR322 (New England Biolabs, Beverly, Mass., USA) is suitable for most Gram-negative bacteria and for various viral origins (eg, SV40, polyoma, adenovirus, bullous stomatitis).
- Virus (VSV) or papillomaviruses such as HPV or BPV, are useful for cloning vectors in mammalian cells.
- the origin of replication is not required for mammalian expression vectors (eg, the SV40 origin is also used because it includes the viral early promoter).
- Transcription termination sequences are typically located at the 3 'end of the polypeptide coding region and serve to terminate transcription. Generally, in prokaryotes, the transcription termination sequence is a G-C rich fragment followed by a poly-T sequence. Such sequences can be easily cloned from the library or obtained using nucleic acid synthesis methods as commercially available or disclosed herein.
- the selection marker gene encodes a protein necessary for survival and growth in the selection culture medium of the host cell.
- Typical selection marker genes are: (a) to provide resistance to antibiotics or other toxins such as ampicillin, tetracycline, or kanamycin in the case of prokaryotic host cells; (b) complement auxotrophic deficiency of cells; Or (c) encodes a protein that supplies an important nutrient not available in a complex or defined medium.
- the selectable markers are kanamycin resistance gene, ampicillin resistance gene, and tetracycline resistance gene. Neomycin resistance genes can also be used for selection in both prokaryotic and eukaryotic host cells.
- selection genes can be used to amplify the genes that are expressed. Amplification is the process in which genes necessary for the production of proteins important for cell growth or survival are repeated in series in the chromosomes of subsequent generations of recombinant cells. Examples of suitable selection markers for mammalian cells include dihydrofolate reductase (DHFR) and promoter-free thymidine kinase genes. Mammalian cell transformants are subjected to a selection pressure that acts only so that the transformant is viable by a selection gene present in the vector.
- DHFR dihydrofolate reductase
- thymidine kinase genes Mammalian cell transformants are subjected to a selection pressure that acts only so that the transformant is viable by a selection gene present in the vector.
- Selection pressure may be applied by culturing the cells under conditions such that the concentration of the selection agent contained in the medium is gradually increased to amplify both the selection gene and other genes, eg, genes encoding antibodies that bind to ⁇ -Syn. have. Thus, the amount of polypeptide, eg, antibody, expressed due to the amplified DNA is increased.
- Ribosome-binding sites are generally required for initiation of translation of mRNA and are characterized by Shine-Dalgarno (prokaryote) or Kozak sequences (eukaryotes). It is typically located 3 'of the promoter and 5' of the coding sequence of the expressed polypeptide.
- glycosylation is required in a eukaryotic host cell expression system
- various pre- or pro-sequences can be engineered to improve glycosylation or yield.
- the final protein product may have one or more additional amino acids at the ⁇ 1 position (relative to the first amino acid of the mature protein) since these amino acids are not completely removed.
- the final protein product may have one or two amino acid residues found at the peptidase cleavage site added at the amino-terminus.
- protein cleavage enzymes can be used to produce a truncated form of protein if the cleavage site is contained within the protein of interest.
- Expression and cloning typically involves the use of a promoter that is operably linked to a molecule encoding an ⁇ -Syn binding protein recognized by the host organism.
- the promoter is a nontranscribed sequence located upstream, i.e. 5 ', of the start codon of the structural gene that regulates transcription of the structural gene (generally within about 100 to 1000 bp).
- Promoters are classified into inducible promoters and always promoters. Inducible promoters initiate or regulate transcription from DNA linked thereto in response to changes in culture conditions, such as the presence or absence of certain components of the medium, or changes in temperature.
- the constant promoter does not regulate the transcription of genes operably linked thereto, but is constantly expressed.
- promoters recognized by a variety of host cells are well known. Suitable promoters are operably linked to DNA encoding heavy or light chains comprising ⁇ -Syn binding proteins by removing the promoter from the template DNA using restriction enzymes and inserting it into the vector.
- Promoters suitable for use with yeast hosts are also well known in the art.
- Yeast enhancers can also be used in conjunction with yeast promoters.
- Suitable promoters for use in mammalian host cells include viruses such as polyoma virus, pharynx virus, adenovirus (eg adenovirus 2), smallpox virus, avian sarcoma virus, cytomegalovirus, Retroviruses, hepatitis B virus, and those obtained from the genome of the apes virus 40 (SV40) may be included, but are not limited to these.
- suitable mammalian promoters include heterologous mammalian promoters, such as heat-shock promoters and actin promoters.
- Additional promoters include the SV40 early promoter (Benoist and Chambon, 1981, Nature 290: 304-310); CMV promoter (Thornsen et al., 1984, Proc. Natl. Acad. U.S.A. 81: 659-663); A promoter included in the 3 'long terminal repeat of the Raus sarcoma virus (Yamamoto et al., 1980, Cell 22: 787-797); Herpes thymidine kinase promoter (Wagner et al., 1981, Proc. Natl. Acad. Sci. U.S.A.
- Promoter and regulatory sequences of the metallothionine gene (Prinster et al., 1982, Nature 296: 39-42); And prokaryotic promoters such as the beta-lactamase promoter (Villa-Kamaroff et al., 1978, Proc. Natl. Acad. Sci. U.S.A. 75: 3727-3731); Or tac promoters (DeBoer et al., 1983, Proc. Natl. Acad. Sci. U.S.A. 80: 21-25).
- transcriptional regulatory regions of animals used in transgenic animals exhibiting tissue specificity may be used: elastase I gene regulatory regions active in pancreatic glandular cells (Swift et al., 1984, Cell 38). : 639-646; Ornitz et al., 1986, Cold Spring Harbor Symp.Quant. Biol.
- Beta-globin gene regulatory regions active in bone marrow cells (Mogram et al., 1985, Nature 315: 338-340; Kollias et al., 1986, Cell 46: 89-94); Myelin basic protein gene regulatory regions active in oligodendrocytes in the brain (Readhead et al., 1987, Cell 48: 703-712); Myosin light chain-2 gene regulatory region active in skeletal muscle (Sani, 1985, Nature 314: 283-286); And gonadotropin releasing hormone gene regulatory regions active in the hypothalamus (Mason et al., 1986, Science 234: 1372-1378).
- Enhancer sequences can be inserted into the vector to increase the transcription of DNA encoding light or heavy chains comprising human ⁇ -Syn binding proteins in higher eukaryotes.
- Enhancers are cis-acting elements of DNA, typically about 10-300 bp in length, that act on the promoter to increase transcription. Enhancers are observed at both 5 'and 3' positions of the transcriptional unit and are relatively independent of position and orientation.
- Many enhancer sequences in mammalian genes are known (eg globin, elastase, albumin, alpha-feto-protein and insulin). Typically, however, enhancers derived from viruses are used.
- Enhancers for activation of promoters known in the art include the SV40 enhancer, cytomegalovirus early promoter enhancer, polyoma enhancer, and adenovirus enhancer.
- Enhancers for activation of eukaryotic promoters can be placed 5 'or 3' of the coding sequence within the vector, but are typically located at the 5 'site of the promoter.
- Sequences encoding appropriate native or heterologous signal sequences (leader sequences or signal peptides) can be incorporated into expression vectors to facilitate extracellular secretion of the antibody. The choice of signal peptide or leader sequence is determined by the type of host cell from which the antibody is produced and can replace the native signal sequence with a heterologous signal sequence.
- signal peptides functional in mammalian host cells include signal sequences for interleukin-7 (IL-7) described in US Pat. No. 4,965,195; Signal sequences for the interleukin-2 receptor described in Cosman et al., 1984, Nature 312: 768; Interleukin-4 receptor signal peptides described in EP Patent No. 0367 566; Type I interleukin-1 receptor signal peptides described in US Pat. No. 4,968,607; Type II interleukin-1 receptor signal peptides described in EP Patent No. 0 460 846.
- IL-7 interleukin-7
- Expression vectors herein can be constructed using commercially available vectors. Such vectors may contain all or part of the desired base sequence or none at all. If one or more of the base sequences described herein are not previously present in the vector, they can be obtained separately and ligated into the vector. Methods of obtaining each sequence included in the base sequence are well known to those skilled in the art.
- recombinant vector After preparation of the vector and insertion of the light and heavy chain nucleic acid molecules comprising the light chain, heavy chain, or ⁇ -Syn antigen binding sequence into the appropriate site of the vector, such recombinant vector undergoes amplification and / or polypeptide expression. May be introduced into a suitable host cell.
- Methods of introducing antibody expression vectors into selected host cells include transduction, infection, calcium phosphate co-precipitation, electroporation, microinjection, lipofection, DEAE-dextran mediated transduction, or other well known methods. Can be achieved by The method of introduction is mainly determined by the type of host cell used. Such methods are well known to those skilled in the art and can be referred to, for example, Sambrook et al., 2001, supra.
- the antibody After culturing the host cell under appropriate conditions, the antibody is obtained from the culture medium (when the host cell secretes the antibody into the medium) or directly from the host cell producing it (when the antibody is not secreted). Selection of an appropriate host cell can be achieved by various factors such as the desired expression level, polypeptide modifications desired or necessary for activity (eg glycosylation or phosphorylation), and folding for the generation of biologically active molecules. It depends on the ease and the like.
- CHO Chinese hamster ovary
- HeLa HeLa cells
- BHK monkey kidney cells
- COS monkey kidney cells
- Hep G2 human hepatocellular carcinoma cells
- the cell line may be determined depending on whether the antibody with ⁇ -Syn binding properties continuously expresses at a high expression level.
- cell lines from B cell lineages that do not produce their own antibodies but have the ability to produce and secrete heterologous antibodies may be selected.
- ⁇ -Syn is a protein consisting of 140 amino acids, mainly expressed at the entire synaptic end of neurons, and in normal state exists as a monomer that is not naturally folded in the cytoplasm.
- the exact function of ⁇ -Syn is not known, but is only detected after synapse development, and thus plays an important role in maintaining synaptic vesicle supply at the presynaptic end of mature (Murphy DD et al. J Neurosci 2000, 20: 3214-3220 And dopamine release, which regulates involuntary or voluntary movement, or may affect memory and cognitive function (Kokhan VS et al. Behav Brain Res 2012, 231: 226230).
- the function of ⁇ -Syn is important with increasing synaptic activity and with age, and is an important factor of neurodegeneration.
- ⁇ -syn undergoes structural changes through binding and interaction with lipids, phospholipid bilayers or lipid membranes to form folded ⁇ -helical secondary structures resulting in dimers, oligomers. to form aggregates comprising molecules of oligomer and fibrous form.
- ⁇ -syn coagulation is associated with Parkinson's disease (PD), Parkinson's disease dementia (PDD), dementia with Lewy bodies (DLB), multiple system atrophy (MSA) and It is known to be associated with the pathogenesis of a group of neurodegenerative disorders called ⁇ -synucleinopathy, including many other neuroaxons, and is also secondary to Alzheimer's disease (Kim et al. Alzheimer's Research & Therapy 2014, 6:73 ).
- alpha-synuclein was found in cerebrospinal fluid and plasma samples of Parkinson's disease patients, indicating that small molecular weight alpha-synuclein aggregates can penetrate the cell membrane to access extracellular space. It has also been shown that misfolded alpha-synuclein can be released from cells by exocytosis and then transferred from one area of the brain to another by intercellular delivery, such as prion proteins (Brundin P et al. Nat Rev Mol Cell Biol 2010, 11: 301-307).
- ⁇ -synucleinopathy is a group of neurodegenerative disorders characterized by the presence of an entity or body containing an ⁇ -syn aggregate in the intracelluarly. These bodies are somewhat different in appearance depending on the disease, and are referred to as Lewy bodies in Parkinson's disease and Lewy body dementia (DLB), glial cytoplasm bodies in MSA, and axon spheroids in neuroaxon disease. Since the antibody according to the present invention preferentially and specifically recognizes ⁇ -syn aggregates, such bodies can be recognized.
- Lewy Body Disease or alpha-synuclein neuropathy is characterized by degeneration of the dopamine system, impairment of motility, cognitive impairment and Lewy body (LB) formation (McKeith et al. Neurology 1996, 47: 1113 -24).
- Lewy bodies are spherical protein deposits found in nerve cells. Lewy bodies interfere with the normal functioning of the brain by interfering with the action of chemical messengers, including acetylcholine and dopamine in the brain.
- Lewy bodies diseases include Parkinson's disease (including idiopathic Parkinson's disease (PD)), diffuse Lewis' disease (DLBD), also called Lewy body dementia (DLB), Alzheimer's disease and Parkinson's disease complex disease, and multiple atrophy (MSA).
- DLBD has the same symptoms as Alzheimer's and Parkinson's disease, but the location of Lewy bodies differs from Parkinson's disease.
- Lewy bodies in DLBD are mainly in the cortex and in Parkinson's disease mainly in the black matter.
- Lewy bodies diseases include Pure Autonomic Failure, dysphagia, Incidental LBD, Inherited LBD (for example ⁇ -syn gene PARK3 and PARK4 gene mutations) and Multiple System Atrophy (MSA for Olivopontocerebellar) Atrophy, Striatonigral Degeneration and Shy-Drager Syndrome).
- MSA Olivopontocerebellar
- ⁇ -Syn aggregates according to the present application are specifically recognized with high affinity, indicating that ⁇ -Syn antibodies can be usefully used for the diagnosis or detection of such diseases. Furthermore, ⁇ -Syn antibodies which specifically recognize ⁇ -Syn aggregates according to the present application inhibit the formation of ⁇ -Syn aggregates or break down aggregates and inhibit the transfer of intercellular aggregates, thereby resulting in ⁇ -synucleinopathy, in particular leuosomes. Disease, Parkinson's disease can be used effectively.
- ⁇ -Syn antibodies are useful for the detection of ⁇ -Syn, in particular ⁇ -Syn aggregates such as Lewy bodies, and for the identification of cells or tissues comprising ⁇ -Syn aggregates in biological samples.
- ⁇ -Syn antibodies detect diagnostics, eg, ⁇ -Syn aggregates expressed in biological samples such as blood, cerebrospinal fluid (CSF) or urine, tissues or cells, including plasma. And / or quantitative assays and diagnostics of ⁇ -synucleinopathy based thereon.
- the antibodies according to the invention that specifically bind to aggregates may be used for the treatment of ⁇ -Syn aggregate related diseases in subjects in need of treatment, diagnosis, and / or detection of diseases associated with ⁇ -Syn aggregates.
- Antibodies or antigen-binding fragments according to the present invention can be usefully used in the treatment of diseases associated with ⁇ -Syn aggregates as described above by inhibiting the production of ⁇ -Syn aggregates, promoting degradation, and inhibiting intercellular delivery. .
- the method according to the present invention is a method for diagnosing ⁇ -synucleinopathy in a subject in need of diagnosis of ⁇ -synucleinopathy, wherein the method comprises measuring the concentration or intracellular location of ⁇ -Syn aggregate in the subject according to the antibody or antigen Measuring with binding fragments; And comparing the concentration or intracellular location of the ⁇ -Syn aggregate measured in the subject with the result of the control sample, wherein the similarity or difference to the result of the control indicates that the subject has ⁇ -synucleinopathy.
- the subject includes a patient who is asymptomatic or before symptoms appear.
- the control may be an ⁇ -synucleinopathy patient comprising PD, DLB or MSA, in which case similarity with the control in the comparing step diagnoses the subject as an ⁇ -synucleinopathy patient.
- a difference from the control eg, an increase in aggregate concentration, in the comparing step diagnoses the subject as ⁇ -synucleinopathy.
- the ages of the subject and control may match.
- the method may be performed on a biological sample isolated from an in vivo or subject, such as blood, cerebrospinal fluid (CSF) or urine sample.
- CSF cerebrospinal fluid
- the method can be performed with in vivo imaging.
- In vivo imaging can be performed using, for example, positron emission tomography (PET), single photon emission tomography (SPECT), near infrared (NIR) optical imaging or magnetic resonance imaging (MRI).
- PET positron emission tomography
- SPECT single photon emission tomography
- NIR near infrared optical imaging
- MRI magnetic resonance imaging
- the method can be performed in-vitro.
- the method may be performed using Western blot, immunoprecipitation, Enzyme Linkied Immuno Sorbent Assay (ELISA), Radioimmunoassay (RIA) or immunohistochemical methods (for example, Tijssen), which are well known to those skilled in the art.
- ELISA Enzyme Linkied Immuno Sorbent Assay
- RIA Radioimmunoassay
- Tijssen immunohistochemical methods
- the antibody may typically be labeled with a detectable label.
- Suitable labeling materials include radioisotopes or radionuclides (eg, 3 H, 14 C, 15 N, 35 S, 90 Y, 99 Tc, 111 In, 125 I, 131 I), fluorescent materials (eg, FITC, rhodamine, lanthanide phosphors), enzymes (e.g.
- the labeling substance can be coupled to the antibody through spacer arms of various lengths to reduce potential steric hindrance.
- spacer arms of various lengths to reduce potential steric hindrance.
- the antibodies of the present disclosure can be used for identification of tissue comprising ⁇ -Syn aggregates.
- the antibody is labeled with a label and binding of the labeled antibody to ⁇ -Syn aggregates is detected.
- the binding of the antibody to the ⁇ -Syn aggregate is detected in vivo.
- the present disclosure discloses detecting or selecting a test substance that competes for binding to an ⁇ -Syn aggregate with an antibody disclosed herein. Detecting the amount of free antibody in a solution comprising ⁇ -Syn aggregates, for example in the presence or absence of a test substance. Increasing the concentration of free antibodies, ie, antibodies that are not bound to ⁇ -Syn aggregates, will indicate that the test molecule may compete with the antibody for ⁇ -Syn aggregate binding.
- the antibody is labeled with a label group.
- the test substance is labeled and the amount of free test substance is monitored for the presence and absence of the antibody.
- antibodies or antigen binding fragments disclosed herein have a variety of utility. For example, it can be used for specific binding assays, ⁇ -Syn purification based on affinity, or a screening method for identifying ⁇ -Syn antagonists.
- Method of treatment pharmaceutical formulation, route of administration
- Antibodies or antigen-binding fragments according to the present invention are useful for the treatment of diseases associated with ⁇ -Syn aggregates as described above by inhibiting the production of ⁇ -Syn aggregates, promoting degradation, and inhibiting intercellular delivery.
- the antibody is provided to a patient.
- the types of diseases and patients for which the antibodies or antigen-binding fragments according to the present invention can be used and the effects are as mentioned above.
- the antibody according to the invention can be used in conjunction with a carrier for vascular brain barrier passage.
- a carrier for vascular brain barrier passage A number of methods for delivering drugs through the vascular brain barrier have been disclosed. For example, there is a method of breaking down the osmotic pressure of BBB using a method such as Bradkinin or Hign density foucues ultrasound (HIFU). It also includes the use of delivery systems such as glucose and amino acid transporters, receptor-mediated transcytosis of insulin or transferrin, or blocking active efflux transporters of glycoproteins inherent in cells.
- HIFU Hign density foucues ultrasound
- receptors in the system of receptor mediated transcytosis are: insulin receptor (eg, human insulin receptor), transferrin receptor, LRP (eg, LRP1, LRP6 and LRP8), melanocortin receptor, nicotinic acetylcholine receptor, VACM-1 receptor, IGFR, EPCR, EGFR, TNFR, Leptin receptor, M6PR, Lipoprotein receptor, NCAM, LIFR, LfR, MRP1, AchR, DTr, Glutathione transporter, SR-B1, MYOF, TFRC, ECE1, LDLR, PVR, CDC50A, SCARF1, MRC1, HLA-DRA, RAMP2, VLDLR, STAB1, TLR9, CXCL16, NTRK1, CD74, DPP4, endothelial growth factor receptors 1, 2 and 3, glucocorticoid receptor, ionotropic glutamate receptor, M3 receptor, aryl hydrocarbon receptor, GLUT-1, in
- the antibodies according to the invention can be used in combination with other therapeutic agents to treat diseases associated with ⁇ -Syn aggregates.
- compositions comprising a therapeutically effective amount of an antibody and a pharmaceutically acceptable diluent, carrier, solubilizer, emulsifier, preservative and / or adjuvant. Also included are methods of treating patients associated with ⁇ -Syn, for example, by administering such pharmaceutical compositions.
- patient includes human patients.
- compositions comprising a therapeutically effective amount of a human ⁇ -Syn antibody.
- acceptable formulation materials are preferably nontoxic to patients at the dosages and concentrations employed.
- the pharmaceutical composition comprises, for example, pH, osmolality, viscosity, transparency, color, isotonicity, fragrance, sterility, stability, rate of dissolution or release, alteration of absorption or penetration, of the composition, It may include certain formulation materials for maintenance or preservation.
- suitable formulation materials include amino acids such as glycine, glutamine, asparagine, arginine or lysine; Antimicrobial agents; Antioxidants such as ascorbic acid, sodium sulfite or sodium hydrogen sulfite; Buffers such as borate, bicarbonate, Tris-HCl, citrate, phosphate or other organic acids; Bulking agents such as mannitol or glycine; Chelating agents such as ethylenediamine tetraacetic acid (EDTA); Complexing agents such as caffeine, polyvinylpyrrolidone, beta-cyclodextrin or hydroxypropyl-beta-cyclodextrin; Fillers; Monosaccharides; saccharose; And other carbohydrates such as glucose, mannose, or dextrins; Proteins such as serum albumin, gelatin or immunoglobulins; Colorants, flavors and diluents; Emulsifiers; Hydrophilic polymers such as polyvinylpyrroli
- the optimal pharmaceutical composition will be determined by one skilled in the art depending on, for example, the route of administration desired, the method of delivery and the desired dose (see REMINGTON'S PHARMACEUTICAL SCIENCES, supra). In certain embodiments, these compositions can affect the physical state, stability, rate of in vivo release, and rate of in vivo clearance of the antibodies disclosed herein.
- the primary vehicle or carrier in the pharmaceutical composition may be aqueous or non-aqueous.
- a suitable vehicle or carrier may be water for injection, physiological saline solution, possibly supplemented with other materials conventional in compositions for parenteral administration. Neutral buffered saline or saline mixed with serum albumin may also be used as the vehicle.
- the pharmaceutical composition comprises Tris buffer of about pH 7.0-8.5, or acetate buffer of about pH 4.0-5.5, and may further comprise sorbitol or a suitable substitute.
- the human ⁇ -Syn antibody composition is prepared for storage by mixing a selected composition having a desired degree of purity in the form of a lyophilized cake or aqueous solution with any formulation agent (REMINGTON'S PHARMACEUTICAL SCIENCES, see). Can be.
- human ⁇ -Syn antibodies may be formulated as lyophilizates using suitable excipients such as sucrose.
- the pharmaceutical composition may be parenterally delivered.
- the composition may be inhaled or delivered through the digestive tract, for example orally.
- the preparation of such pharmaceutically acceptable compositions is within the skill of the art.
- buffers are used to maintain the composition within physiological pH or slightly lower pH, typically in the pH range of about 5 to about 8.
- the therapeutic composition may comprise the desired human ⁇ -Syn binding protein in a pharmaceutically acceptable vehicle and be provided in the form of an aqueous solution acceptable for parenteral that does not contain pyrogens.
- Particularly suitable vehicles for parenteral infusion are sterile distilled water, wherein human ⁇ -Syn antibodies are formulated with appropriately preserved sterile isotonic solution.
- such formulations can provide controlled release or sustained release release of the composition, such as injectable microspheres, bio-, which can be delivered via depot injection.
- Formulation with corrosive particles, polymeric compounds (eg polylactic acid or polyglycolic acid), beads or liposomes may be involved.
- hyaluronic acid can also be used, which has the effect of increasing the duration in blood.
- an implantable drug delivery device can also be used to deliver the desired antibody.
- compositions are also formulated for inhalation.
- human ⁇ -Syn antibodies are formulated as dry inhalable powders.
- human ⁇ -Syn antibody inhalation solutions may also be formulated with a propellant for aerosol delivery. In certain embodiments, the solution can be sprayed.
- Such pulmonary administration and formulation methods are further described in International Patent Application No. PCT / US94 / 001875. Some formulations may be administered orally. Human ⁇ -Syn antibodies administered in this manner may be formulated with or without carriers conventionally used in the manufacture of solid dosage forms, eg, tablets and capsules.
- the capsule can be designed to release the active portion of the formulation at a point in the gastrointestinal tract where the bioavailability is maximized and pre-systemic degradation is minimized.
- Additional agents may be included to facilitate uptake of human ⁇ -Syn antibodies. Diluents, flavors, low melting waxes, vegetable oils, lubricants, suspending agents, tablet disintegrating agents, and binders may also be used.
- compositions include an effective amount of a human ⁇ -Syn antibody in admixture with a nontoxic excipient suitable for the manufacture of tablets.
- a nontoxic excipient suitable for the manufacture of tablets By dissolving the tablets in sterile water, or other suitable vehicle, the solution can be prepared in unit-dose form.
- Suitable excipients include inert diluents such as calcium carbonate, sodium carbonate, sodium bicarbonate, lactose or calcium phosphate; Or binders such as starch, gelatin or acacia; Or lubricants such as magnesium stearate, stearic acid or talc.
- compositions including formulations comprising other human ⁇ -Syn antibodies, including sustained- or controlled-delivery formulations, will be apparent to those skilled in the art.
- Techniques for formulating various other sustained- or controlled-delivery means such as liposome carriers, bio-corrosive particulates or porous beads and depot infusions are also known to those skilled in the art.
- Sustained-release preparations may include semipermeable polymer matrices in the form of shaped articles, eg, films, or microcapsules.
- Sustained release matrices include polyesters, hydrogels, polylactides (disclosed in US Pat.
- Sustained release compositions may also include liposomes, which may be prepared by one of several methods known in the art. For example, Eppstein et al., 1985, Proc. Natl. Acad. Sci. U.S.A. 82: 3688-3692; European Patent Application Publication No. EP 036,676; See EP 088,046 and EP 143,949.
- compositions used for in vivo administration are typically provided as sterile preparations. Sterility can be achieved by filtration through sterile filtration membranes. When the composition is lyophilized, the process of lyophilization as well as dissolving it in solution should be carried out aseptically.
- Compositions for parenteral administration may be stored in lyophilized form or in solution. Parenteral compositions are generally contained in a container having a sterile access port, such as a stoppered vial or intravenous solution bag into which a hypodermic needle can enter.
- cells expressing recombinant antibodies as disclosed herein can be encapsulated for delivery (Invest. Ophthalmol Vis Sci 43: 3292-3298, 2002; and Proc. Natl. Acad. Sciences 103: 3896- 3901, 2006).
- the antibody has at least 10 mg / ml, 20 mg / ml, 30 mg / ml, 40 mg / ml, 50 mg / ml, 60 mg / ml, 70 mg / ml, 80 mg / ml, 90 mg / ml Have a concentration of ml, 100 mg / ml or 150 mg / ml.
- Some formulations include buffers, sucrose and polysorbates.
- One example of a formulation is one comprising 50-100 mg / ml of antibody, 5-20 mM sodium acetate, 5-10% w / v sucrose, and 0.002-0.008% w / v polysorbate.
- Certain tablets include, for example, 65-75 mg / ml antibody, 8-10% w / v sucrose, and 0.005-0.006% w / v polysorbate in 9-11 mM sodium acetate buffer.
- the pH of this particular formulation is in the range of 4.5-6.
- Other formulations have a pH of 5.0-5.5 (eg, a pH of 5.0, 5.2 or 5.4).
- kits for generating single-dose dosage units are also provided. Such kits include a first container with dried protein and a second container with an aqueous formulation. In certain embodiments, kits are provided comprising single and multi-chambered pre-filled syringes.
- the therapeutically effective amount of the human ⁇ -Syn antibody-containing pharmaceutical composition used will depend, for example, on the therapeutic context and purpose.
- appropriate dosages for treatment will depend, at least in part, on the disease in which human ⁇ -Syn antibodies are used, the route of administration, and the physical condition (weight, body surface or organ size) and / or condition (age and overall health) of the patient. I can understand that.
- the clinician can determine the optimal dose and alter the route of administration to obtain the optimal therapeutic effect.
- Typical dosages may range from about 1 ⁇ g / kg to about 30 mg / kg or more in view of the factors mentioned above.
- the dose may range from 10 ⁇ g / kg to about 30 mg / kg, alternatively from 0.1 mg / kg to about 30 mg / kg, or alternatively from 0.3 mg / kg to about 20 mg / kg. .
- the dose is 0.5 mg / kg to 20 mg / kg.
- the antibody is administered at 0.3 mg / kg, 0.5 mg / kg, 1 mg / kg, 3 mg / kg, 10 mg / kg, or 20 mg / kg.
- compositions may be administered as a single dose, or as two or more doses over time, or as a continuous infusion via an implantable device or catheter. Appropriate doses can be identified through the use of appropriate dose-response data.
- the antibody can be administered to the patient over a long time.
- the chronic administration of the antibody may be an antibody that is not fully human, eg, an antibody produced against a human antigen in a non-human animal, eg, a non-complete human antibody or a non-human antibody produced in a non-human animal. Minimize the adverse immune or allergic reactions that are usually involved.
- the route of administration of the pharmaceutical composition is known in the art, for example oral; Injection via intravenous, intraperitoneal, intracranial (intraparenchymal), intraventricular, intramuscular, intraocular, intraarterial, intraportal, or intralesional routes; Sustained release systems or implantable devices may be used.
- the composition can be administered continuously by bolus injection or by infusion or implantation device.
- composition may also be administered topically by implanting a membrane, sponge or other suitable material into which the desired molecule has been absorbed or encapsulated.
- a membrane, sponge or other suitable material into which the desired molecule has been absorbed or encapsulated.
- the device can be implanted into any suitable tissue or organ, and delivery of the desired molecule can be achieved via diffusion, timely bolus or continuous administration. .
- human ⁇ -Syn antibody pharmaceutical compositions ex vivo.
- the cells, tissues or organs removed from the patient are exposed to the human ⁇ -Syn antibody pharmaceutical composition, after which the cells, tissues and / or organs are subsequently transplanted into the patient.
- human ⁇ -Syn antibodies can be delivered by transplanting certain cells genetically engineered using methods such as those described herein to express and secrete polypeptides.
- such cells may be animal or human cells and may be from autologous, tagalog, or heterologous.
- the cells can be immortalized.
- cells can be encapsulated to prevent penetration into surrounding tissue.
- the encapsulation material is a biocompatible semi-permeable polymeric enclosure or membrane that typically allows release of protein products but prevents destruction of cells by other harmful factors from the patient's immune system or surrounding tissue. .
- ⁇ -syn monomers in which the full length (140 residues) or C-terminal 21 residues were cleaved were put in a 37 degree thermomixer C, shaken at 1050 rpm for 14 days, and used by sonication.
- Each of 140 and 119 residues of ⁇ -syn fibril prepared at a concentration of 1 mg / ml was mixed with adjuvant 1: 1 (vol: vol) and mixed well.
- the spleen of the immunized mouse was removed as described above to obtain cells therefrom. Spleen cells were then suspended in Hybridoma-SFM medium (Thermo Fisher Scientific, USA) with 10% FBS. To prepare hybridomas, murine myeloma cells, SP2 / 0-Ag14, and spleen cells were mixed in a hybridoma-SFM medium containing no serum and centrifuged to remove the medium. Subsequently, PEG was added to the cell pellet, and then cultured for 1 minute at 37 ° C to induce cell fusion.
- Hybridoma-SFM medium Thermo Fisher Scientific, USA
- Variable region and CDR sequences are described in Ahn et al, Mol. Cells 2004, 18 (2): 237-241. After culturing the hybridomas, only cells were separated by centrifugation. RNA was isolated by adding trizol to the isolated hybridoma, and cDNA was synthesized using the template, and the variable region and CDR sequences were confirmed by sequencing.
- amino acid sequences are shown in Table 1 and the nucleotide sequences are shown in Table 2.
- the culture solution was centrifuged at 4500 rpm and 4 ° C. for 15 minutes, and then dissolved in the supernatant by adding 4% PEG 6000 (Fluka, 81253) and 3% NaCl (Sigma, S7653), and then iced for 1 hour. Reacted. This was again centrifuged at 8000 rpm for 20 minutes at 4 ° C., the pellets were suspended in PBS, and then again centrifuged at 12000 rpm for 10 minutes at 4 ° C. to obtain a supernatant containing library phage and placed in a new tube. Store at 4 ° C. until use.
- panning was performed using the full-length alpha-synuclein aggregate prepared in Example 1 in order to select an antibody that binds alpha-synuclein aggregates in favor of monomers, and panning was performed three times in total as follows.
- Phages that were not bound to the synuclein monomer were recovered and bound to an immunoassay tube to which the nucleophile aggregates were attached at room temperature for 2 hours. Subsequently, non-specifically bound phages were washed 5 to 30 times with PBS-T (0.05% Tween 20) solution, and the remaining antigen-specific phage antibodies were recovered using 100 mM triethylamine solution. The recovered phages were neutralized with 1M Tris buffer (pH 7.4), then infected with ER2537 Escherichia coli at 37 ° C for 1 hour, and the infected E. coli was plated in 2X YT agar medium containing carbenicillin and incubated overnight at 37 ° C.
- Escherichia coli cultured the next day was suspended in 4 ml of 2X YT carbenicillin culture and 15% glycerol was added to store some at -80 ° C and the rest to produce phage for the next round of panning. This process was repeated three rounds in total to amplify antigen specific antibodies. As the panning round progressed, the number of washings using PBS-T was increased to amplify and concentrate the antigen-specific phage.
- the following experiment was performed to select monoclonal antibodies that specifically bind to the secucle aggregates from the phage pool obtained through the panning.
- the phage pool was plated in LB-tetracycline / carbenicillin agar medium and cultured to obtain a single colony. Monoclones were then inoculated into 96 deep well plates containing 400 ⁇ l of 2 ⁇ YT-tetracycline / carbenicillin medium per well and grown overnight, then 10 ⁇ l of the culture was added to 390 ⁇ l of 2 ⁇ YT-tetracycline / carbenicillin. Into a 96 deep well plate containing the medium was incubated at 37 °C 4 hours. 1 mM IPTG was added to the culture solution and incubated overnight at 30 ° C. The culture broth cultured overnight was centrifuged to obtain the supernatant.
- clones expressing monoclonal soluble scFv that bind to the secuclein aggregates were selected using the ELISA method (Steinberger. Rader and Barbas III. 2000. Phage display vectors.In: Phage Display Laboratory Manual. 1sted.ColdSpring) Harbor Laboratory Press.NY.USA.pp.11.9-11.12).
- the 7B7 antibody selected in Example 1-1 was put into a 96 well plate and coated overnight at 4 ° C. 200% of 3% BSA was added to each well and blocked for 2 hours at 37 ° C.
- each of the securate aggregates and the monomers was loaded at a concentration of 100 ng / well and reacted at 37 ° C.
- Example 2-1 Dot blot analysis using mouse monoclonal anti ⁇ -Syn antibody
- Dot blot experiments were carried out to analyze whether the antibodies according to the invention bind to monomers or aggregates in their native state.
- 50 ng or 100 ng of ⁇ -syn monomer or fibril protein (manufactured by Prof. Seung-Jae Lee, Seoul National University; Bae et al., J. Neurosci 32: 13454, 2012) was used as a dot blot apparatus (BioRad). Spot loaded onto the nitrocellulose membrane. Two-fold dilutions of monomer or fibril protein were loaded sequentially from right to left of the membrane (12.5, 25, 50, 100 ng).
- the ⁇ -syn antibody prepared in Example 1 was placed in TBST containing 1% bovine serum albumin at a concentration of 1 mg / ml. And the antibody were incubated at room temperature for 1 hour. After washing with TBST, the signal was analyzed using a chemiluminscence substrate (NEN) as a secondary antibody and substrate bound to horse radish peroxidase (HRP). The results were imaged using the LAS-3000 Luminescent Image Analysis System (FUJIFILM Life Science). The results are described in FIG.
- the ⁇ -syn antibody according to the present invention was found to bind preferentially only to aggregates, compared to the ⁇ -syn monomer.
- 1E4, 9B11, 3A9 and 11F11 bind only to aggregates
- 10F10 binds to both aggregates and monomers.
- 274 antibody (Bae et al., J Neurosci. 2012 Sep 26; 32 (39): 13454-13469) is a comparative antibody that binds to both monomers and aggregates.
- Example 2-2 mouse Monoclonal Anti ⁇ - Syn ELISA analysis using antibodies
- ELISA was performed to quantitatively analyze the binding capacity of the antibody according to the present application to the antigen.
- an alpha-synuclein antibody according to the present application was coated on a 96 well plate at a concentration of 1 mg / ml, and then treated with an alpha-synuclein fibril aggregate at a concentration of 10, 100, 1000, 10,000 ng / ml.
- the absorbance was measured. The results are described in FIG.
- the antibody according to the present invention was found to bind preferentially with high binding force. Analysis of antibodies through ELISA results showed that affinity-binding antibodies showed an affinity of 0.1-2 x 10 -9 M. Antibodies that bound to both monomers and aggregates showed higher ⁇ 1 x 10 -10 M values. Seemed.
- the instrument used T200 (GEHealthcare, S / N: 1565888).
- Chip used Protein A (GE Healthcare, Cat. 29-1275-56), Regeneration buffer was 10 mM Glycine-HCl pH1.5 (GE Healthcare, Cat. BR-1003-54), Running buffer and analyte dilution, HBS-EP was used as sample dilution buffer.
- ⁇ -syn antibodies (3A9, 9B11, 11F11) prepared in Example 1 were diluted with 1 ⁇ HBS-EP (GE Healthcare, Cat.
- ⁇ -syn monomer (1 mg / ml) or blood Bryl protein (3 mg / ml) (analyte) was serially diluted twice and analyzed at a total of six concentrations (0, 0.39, 1.56, 6.25, 25, 100 nM) including 0 nM.
- monomers set the target RU to 800 (theoretical)
- fibrils set the target RU to 100 (theoretical)
- the capture phase to 60 seconds for contact time, flow rate to 30 ⁇ l / min, and stabilization period to 180 seconds. Proceeded.
- the association time was 120 seconds and the flow rate was 30 ⁇ l / min.
- the dissociation time was 360 seconds and the flow rate was 30 ⁇ l / min.
- the regeneration phase the regeneration time was performed twice at 240 sec (first), 60 sec (second) at a flow rate of 30 ⁇ l / min. Fitting was performed using a 1: 1 binding model, and BIACore T200 Evaluation software was used for evaluation software (GE healthcare). The results are described in FIGS. 3A and 3B.
- 1X KB buffer (cat. 18-1092) or 1X PBS buffer was used as the running buffer at 1000 rpm, and immobilization buffer was sodium acetate, pH 5 (10 mM, Cat. 18-1068).
- ⁇ -syn monomer immobilized the ⁇ -syn antigen and fibril immobilized the test antibody.
- the target concentrations were 20 ⁇ g / ml for monomers and 0.4 ⁇ g / ml for fibrils, and the kinetics concentrations were diluted twice from 50 nM for monomers and 100 nM for fibrils in order to set a total of seven points. It was.
- Association / Dissociation time was 5 minutes / 20 minutes for monomer and 5 minutes / 25 minutes for fibril.
- Biosensor ARG2 was used and fitting was 1: 1 fitting.
- Example 2-5 Dot blot using ScFV anti ⁇ -Syn antibody
- Dot blot was performed as described in Example 2-1 using the ScFV anti ⁇ -Syn antibody selected in Example 1-2. Antigens were loaded in order of 6.25 ng, 12.5 ng, 25 ng and 50 ng from the first left line. Antibodies were treated at a concentration of 1 ⁇ g / ml and identified using anti-human Fc-HRP 2 nd Ab.
- FIG. M represents a monomeric antigen and A represents an aggregate antigen.
- Selective binding to monomers or aggregates of each antibody is shown in the table to the right.
- AA9, AD2, AD7, AC8, DG8, DG11, DA9, DG5 were found to bind only to aggregates, and AE8 was found to bind preferentially to aggregates and very weakly to monomers.
- Octet assay was performed as described in Examples 2-4 using ScFV anti ⁇ -Syn antibodies selected in Examples 1-2. The results are shown in FIG. 6. These antibodies have been shown to have a high affinity of ⁇ 10 ⁇ 9 to ⁇ 10 ⁇ 11 M for ⁇ -syn aggregates.
- BiFC bimolecular fluorescence complementation
- SH-SY5Y human neuroblastoma cell lines expressing alpha-synuclein and half Venus fluorescent protein (Venus 1- ⁇ Syn (V1S), ⁇ Syn-Venus2 (SV2)), respectively, were cultured as previously described before the experiment ( Lee HJ et al. J. Neurosci. 2004; 24: 1888-1896). Prior to the experiment, 180,000 cells expressing V1S and SV2 were mixed on a cover slip and incubated for 3 days. Co-cultures were sub-cultured every 48 hours to confirm the intercellular migration of alpha-synuclein. In a separate experiment it was confirmed that the degree of delivery is the maximum at the sixth passage (passage) (data not shown), the intercellular delivery inhibitory effect of the antibody in this example was analyzed using a six-passage co-culture.
- ⁇ -Syn antibody prepared herein 10 mg / kg of the present invention in a transgenic mouse (mThy-1 human ⁇ -synuclein, UC San Diego) overexpressing human alpha-synuclein
- the corresponding antibody or IgG was intraperitoneally administered for 3 months.
- Six mice per group were used, and non-transgenic littermate was used as a control. Perfusion was then performed as follows.
- Pathological analysis was performed as follows. The brain halves fixed in paraformaldehyde were cut into 40 ⁇ m thick sections by free-floating method using Vibratome. In order to confirm the expression level of ⁇ -syn in the brain of each administration group, fragments containing cortex, striatum, hippocampus were treated with ⁇ -syn antibodies (p129 ⁇ -syn antibody, abcam, ab59264 or total ⁇ -syn antibody, Cell Signaling Technology, # 2642) and incubated overnight at 4 °C.
- ⁇ -syn antibodies p129 ⁇ -syn antibody, abcam, ab59264 or total ⁇ -syn antibody, Cell Signaling Technology, # 2642
- astrocyte astrocyte
- microglia microglia
- fragments were GFAP (glial fibrillary acidic protein) (AB5804, millipore) or Iba1 antibody (019-19741, Wako)
- GFAP glial fibrillary acidic protein
- Iba1 antibody (019-19741, Wako)
- IL-6 NB600-1131, Novus Biologicals
- IL-1 ⁇ IL-1 ⁇
- FIG. 8A is a TG (TransGenic) mouse to which an antibody according to the present invention is administered as a result of analysis with p-129 ⁇ -Syn antibody (an antibody that recognizes ⁇ -syn having phosphorylated at Ser 129), a marker of ⁇ -Syn aggregate was significantly reduced in aggregates in CA1 and CA3 of cortex and hippocampus compared to control mice administered only with IgG (marked with arrowheads in IgG samples).
- 8B is the result of staining with total ⁇ -Syn antibody.
- Example 5 Mouse Monoclonal Anti ⁇ - Syn Antibody Microgliosis Of inflammatory cytokine release and astrogliosis reduction
- Gliosis is a nonspecific response that occurs in glial cells in response to damage to the central nervous system, triggered by damage to BBB, a substance such as TGF-beta or interleukin.
- Representatives include Microgliosis and Astrogliosis, with Iba-1 and GFAP proteins as markers, respectively.
- the antibody according to the present application was administered to mice to analyze the effect on the reduction of Microgliosis and Astrogliosis and the inflammatory cytokine release that triggers it.
- FIGS. 9A, 9B, 9C and 9D The results are disclosed in FIGS. 9A, 9B, 9C and 9D.
- the antibodies according to the present disclosure have been shown to reduce Microgliosis and Astrogliosis, and to reduce the release of the inflammatory cytokines IL-1beta and IL-6, which trigger them.
- biotin-coupled anti-human IgG antibody was treated at 37 ° C. for 30 minutes, and the avidin-biotin complex was reacted at room temperature for 30 minutes (Vectastatin Elite kit; Vector Laboratories). Subsequently, the cells were colored with DAB containing 0.005% H2O2, and the cells were distinguished by counter staining with 0.5% cresyl violet.
- FIGS. 10A and 10B The results are shown in FIGS. 10A and 10B.
- the antibody according to the present invention was shown to effectively bind (indicated by arrow) to Lewy bodies and Lewy neurites. These results indicate that they can effectively bind to ⁇ -syn aggregates, which are components of the Lewy bodies in human brain tissue. It is shown that antibodies delivered to the human brain can specifically bind ⁇ -syn aggregates effectively.
- Epitope mapping for 3A9 and 11F11 antibodies according to the present application was performed by commissioning a peptide array assay to PEPSCAN (The Netherlands).
- the antibodies according to the present application were shown to recognize the C-terminus.
- the aggregates showed a favorable binding.
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Abstract
Description
Claims (29)
- α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편으로,상기 항체 또는 항원결합 단편은 (i) CDRH1, CDRH2 및 CDRH3의 상보성 결정부위를 포함하는 중쇄 가변영역; 및 (ii) CDRL1, CDRL2 및 CDRL3의 상보성 결정부위를 포함하는 중쇄 가변영역을 포함하며,상기 CDRH1은 서열번호 1 내지 14로부터 선택되고; 상기 CDRH2는 서열번호 15 내지 28로부터 선택되고; 상기 CDRH3은 서열번호 29 내지 42로부터 선택되고,상기 CDRL1은 서열번호 43 내지 56으로부터 선택되고; 상기 CDRL2는 서열번호 57 내지 70으로부터 선택되고; 상기 CDRL3은 서열번호 71 내지 84로부터 선택되는 것인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 1 항에 있어서,상기 중쇄 가변영역의 CDRH1, CDRH2 및 CDRH3; 및 상기 경쇄 가변영역의 CDRL1, CDRL2 및 CDRL3의 서열은 다음 중 어느 하나인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편:(aa) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 1, 15, 및 29, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 43, 57 및 71;(ab) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 2, 16, 및 30, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 44, 58 및 72;(ac) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 3, 17, 및 31, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 45, 59 및 73;(ad) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 4, 18, 및 32, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 46, 60 및 74;(ae) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 5, 19, 및 33, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 47, 61 및 75;(af) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 6, 20, 및 34, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 48, 62 및 76;(ag) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 7, 21, 및 35, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 49, 63 및 77;(ah) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 8, 22, 및 36, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 50, 64 및 78;(ai) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 9, 23, 및 37, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 51, 65 및 79;(aj) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 10, 24, 및 38, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 52, 66 및 80;(ak) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 11, 25, 및 39, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 53, 67 및 81;(al) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 12, 26, 및 40, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 54, 68 및 82;(am) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 13, 27, 및 41, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 55, 69 및 83; 또는(an) CDRH1, CDRH2 및 CDRH3은 각각 서열번호 14, 28, 및 42, 그리고 상기 CDRL1, CDRL2, 및 CDRL3은 각각 서열번호 56, 70 및 84.
- 제 1 항에 있어서, 상기 중쇄 가변영역은,서열번호 85 내지 98로부터 선택되는 아미노산 서열;서열번호 85 내지 98로부터 선택되는 아미노산 서열과 적어도 90% 이상의 상동성을 갖는 서열; 또는서열번호 85 내지 98로부터 선택되는 아미노산 서열과 적어도 95% 이상의 상동성을 갖는 서열을 포함하는 것인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 1 항에 있어서, 상기 경쇄 가변영역은,서열번호 99 내지 112로부터 선택되는 아미노산 서열;서열번호 99 내지 112로부터 선택되는 아미노산 서열과 적어도 90% 이상; 또는서열번호 99 내지 112로부터 선택되는 아미노산 서열과 적어도 95% 이상의 상동성을 갖는 서열을 포함하는 것인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 1 항에 있어서,상기 중쇄 가변영역 및 경쇄 가변영역은 각각서열번호 85 및 99;서열번호 86 및 100;서열번호 87 및 101;서열번호 88 및 102;서열번호 89 및 103;서열번호 90 및 104;서열번호 91 및 105;서열번호 92 및 106;서열번호 93 및 107;서열번호 94 및 108;서열번호 95 및 109;서열번호 96 및 110;서열번호 97 및 111; 또는서열번호 98 및 112로 표시되는 서열을 포함하는 것인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 1 항에 있어서,상기 항체 또는 항원결합 단편은 모노클로날 항체, Fab 단편, Fab’단편, F(ab’) 단편, diabody 또는 scFV인 α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 6 항에 있어서,상기 모노클로날 항체는 인간 항체, 인간화 항체, 또는 키메라 항체인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 6 항에 있어서,상기 모노클로날 항체는 IgG1, IgG2, IgG3 또는 IgG4 형인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 1 항에 있어서,상기 항체는 다음 중 어느 하나의 중쇄 및 경쇄를 포함하는 α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편:상기 경쇄 및 중쇄는 각각 서열번호 113 및 서열번호 141; 서열번호 114 및 서열번호 142; 서열번호 115 및 서열번호 143; 서열번호 116 및 서열번호 144; 서열번호 117 및 서열번호 145; 서열번호 118 및 서열번호 146; 서열번호 119 및 서열번호 147; 서열번호 120 및 서열번호 148; 서열번호 121 및 서열번호 149; 서열번호 122 및 서열번호 150; 서열번호 123 및 서열번호 151; 서열번호 124 및 서열번호 152; 서열번호 125 및 서열번호 153; 또는 서열번호 126 및 서열번호 154;로 표시되는 아미노산 서열을 갖는 것인, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 1 항에 있어서,상기 항체는 다음 중 어느 하나의 중쇄 및 경쇄를 포함하는 α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편:상기 경쇄 및 중쇄는 각각 서열번호 127 및 서열번호 155; 서열번호 128 및 서열번호 156; 서열번호 129 및 서열번호 157; 서열번호 130 및 서열번호 158; 서열번호 131 및 서열번호 159; 서열번호 132 및 서열번호 160; 서열번호 133 및 서열번호 161; 서열번호 134 및 서열번호 162; 서열번호 135 및 서열번호 163; 서열번호 136 및 서열번호 164; 서열번호 137 및 서열번호 165; 서열번호 138 및 서열번호 166; 서열번호 139 및 서열번호 167; 또는 서열번호 140 및 서열번호 168.
- 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원결합 단편은, α-Syn 응집체의 세포간 전달의 억제; α-Syn 응집체를 분해; 또는 α-Syn 응집체 형성을 억제하는, α-Syn의 응집체에 결합하는 분리된 항체 또는 그 항원결합 단편.
- 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원결합 단편을 코딩하는 분리된 폴리뉴클레오타이드.
- 제 12 항에 따른 폴리뉴클레오타이드를 포함하는 발현 벡터.
- 제 13 항에 따른 발현 벡터로 형질전환된 세포.
- 제 14 항에 따른 세포를 배양하는 단계; 및상기 세포주로부터 항체 또는 그 항원결합 단편을 분리하는 단계를 포함하는, α-Syn에 특이적으로 결합하는 분리된 항체 또는 그 항원결합 단편의 제조 방법.
- 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 그 항원결합 단편을 포함하는, 조성물.
- 제 16 항에 있어서, 상기 조성물은 약학적으로 허용가능한 담체 또는 부형제를 추가로 포함하는 α-synucleinopathy의 치료용인, 조성물.
- 제 17 항에 있어서,상기 α-synucleinopathy는 파킨슨 질환(Parkinson's disease, PD), 파킨슨질환성 치매(Parkinson's disease dementia, PDD), 루이소체 치매(dementia with Lewy bodies, DLB), 알츠하이머 루이소체 질환(Lewy body variant of Alzheimer's disease (LBV)), 복합성 알츠하이머 및 파킨슨 병(Combined Alzheimer's and Parkinson disease), 또는 다계통위축증(multiple system atrophy, MSA)를 포함하는 것인, 조성물.
- 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편을 제공하는 단계; 및상기 항체 또는 항원결합 단편을 α-Syn 응집체 검출이 필요한 생물학적 시료와 접촉하는 단계를 포함하는 생물학적 시료에서 인비보 또는 인비트로 α-Syn 응집체 검출방법.
- 약학적으로 유효한 양의 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편 또는 이를 포함하는 조성물을 α-synucleinopathy의 치료 및/또는 α-syn 응집체의 농도 조절이 필요한 대상체에게 투여하는 단계를 포함하는, 상기 대상체의 α-synucleinopathy 치료 또는 상기 대상체에서 α-syn 응집체의 농도를 조절하는 방법.
- 제 20 항에 있어서,상기 α-synucleinopathy는 파킨슨 질환(Parkinson's disease, PD), 파킨슨질환성 치매(Parkinson's disease dementia, PDD), 루이소체 치매(dementia with Lewy bodies, DLB), 알츠하이머 루이소체 질환(Lewy body variant of Alzheimer's disease (LBV)), 복합성 알츠하이머 및 파킨슨 병(Combined Alzheimer's and Parkinson disease), 또는 다계통위축증(multiple system atrophy, MSA)를 포함하는 것인, 방법.
- 대상체에서 α-synucleinopathy를 진단하는 방법으로, 상기 방법은상기 대상체에서 α-Syn 응집체의 농도 및/또는 세포내 위치를 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편로 측정하는 단계; 및상기 대상체에서 측정된 상기 α-Syn 응집체의 농도 및/또는 세포내 위치를 대조군 시료의 결과와 비교하는 단계를 포함하며, 상기 대조군의 결과와 유사 또는 차이는 상기 대상체가 α-synucleinopathy에 걸린 것을 나타내는 것인, 방법.
- 제 22 항에 있어서,상기 α-synucleinopathy는 파킨슨 질환(Parkinson's disease, PD), 파킨슨질환성 치매(Parkinson's disease dementia, PDD), 루이소체 치매(dementia with Lewy bodies, DLB), 알츠하이머 루이소체 질환(Lewy body variant of Alzheimer's disease (LBV)), 복합성 알츠하이머 및 파킨슨 병(Combined Alzheimer's and Parkinson disease), 또는 다계통위축증(multiple system atrophy, MSA)를 포함하는 것인, 방법.
- 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편 또는 이를 포함하는 조성물의 α-synucleinopathy 대상체의 상기 질환 치료용 용도로, 상기 항체 또는 항원 결합 단편 또는 이를 포함하는 조성물은 상기 대상체의 뇌에서, α-Syn 응집체의 세포간 전달의 억제; α-Syn 응집체 분해; 또는 α-Syn 응집체 형성을 억제하는 것인, 용도.
- 제 24 항에 있어서,상기 α-synucleinopathy는 파킨슨 질환(Parkinson's disease, PD), 파킨슨질환성 치매(Parkinson's disease dementia, PDD), 루이소체 치매(dementia with Lewy bodies, DLB), 알츠하이머 루이소체 질환(Lewy body variant of Alzheimer's disease (LBV)), 복합성 알츠하이머 및 파킨슨 병(Combined Alzheimer's and Parkinson disease), 또는 다계통위축증(multiple system atrophy, MSA)를 포함하는 것인, 용도.
- 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편 또는 이를 포함하는 조성물의 뇌 세포에서 α-Syn 응집체 농도 조절용 용도로, 상기 항체 또는 항원 결합 단편 또는 이를 포함하는 조성물은 상기 대상체의 뇌에서, α-Syn 응집체의 세포간 전달의 억제; α-Syn 응집체 분해; 또는 α-Syn 응집체 형성을 억제하는 것인, 용도.
- 뇌에서, α-Syn 응집체의 세포간 전달의 억제; α-Syn 응집체 분해; 또는 α-Syn 응집체 형성을 억제하는, 뇌 세포에서 α-Syn 응집체 농도 조절용의 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편.
- α-synucleinopathy 치료에 사용되는 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편.
- 제 28 항에 있어서,상기 α-synucleinopathy는 파킨슨 질환(Parkinson's disease, PD), 파킨슨질환성 치매(Parkinson's disease dementia, PDD), 루이소체 치매(dementia with Lewy bodies, DLB), 알츠하이머 루이소체 질환(Lewy body variant of Alzheimer's disease (LBV)), 복합성 알츠하이머 및 파킨슨 병(Combined Alzheimer's and Parkinson disease), 또는 다계통위축증(multiple system atrophy, MSA)를 포함하는 것인, 제 1 항 내지 제 10 항 중 어느 한 항에 따른 항체 또는 항원 결합 단편.
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