69results about How to "Neutralizing activity" patented technology

Human antibodies, preferably recombinant human antibodies, that specifically bind to human tumor necrosis factor α (hTNFα) are disclosed. These antibodies have high affinity for hTNFα (e.g., K_d=10⁻⁸ M or less), a slow off rate for hTNFα dissociation (e.g., K_off=10⁻³ sec⁻¹ or less) and neutralize hTNFα activity in vitro and in vivo. An antibody of the invention can be a full-length antibody or an antigen-binding portion thereof. The antibodies, or antibody portions, of the invention are useful for detecting hTNFα and for inhibiting hTNFα activity, e.g., in a human subject suffering from a disorder in which hTNFα activity is detrimental. Nucleic acids, vectors and host cells for expressing the recombinant human antibodies of the invention, and methods of synthesizing the recombinant human antibodies, are also encompassed by the invention.

The present disclosure provides antibodies that specifically bind to botulinum neurotoxins (e.g., BoNT/A, BoNT/B, BoNT/C, BoNT/D, BoNT/E, BoNT/F, BoNT/G, etc.) and the epitopes bound by those antibodies. The antibodies and derivatives thereof that specifically bind to the neutralizing epitopes provided herein can be used to neutralize botulinum neurotoxin and are therefore also useful in the treatment of botulism.

Antibodies that bind human interleukin-18 (hIL-18) are provided, in particular antibodies that bind epitope(s) of human IL-18. The antibodies can be, for example, entirely human antibodies, recombinant antibodies, or monoclonal antibodies. Preferred antibodies have high affinity for hIL-18 and neutralize hIL-18 activity in vitro and in vivo. An antibody of the invention can be a full-length antibody or an antigen-binding portion thereof. Method of making and method of using the antibodies of the invention are also provided. The antibodies, or antibody portions, of the invention are useful for detecting hIL-18 and for inhibiting hIL-18 activity, e.g., in a human subject suffering from a disorder in which hIL-18 activity is detrimental.

The invention relates to a preparation method of virus-like particles (VLPs) of Chikungunya virus (CHIKV). The method comprises the steps of: modifying genetic elements of a structural protein encoding gene C-E3-E2-6K-E1 of CHIKV, cloning the modified genetic elements into the expression vector of an insect cell, then transfecting the obtained recombined expression vector and baculovirus linear DNA respectively to an SF9 insect cell and making the cell secrete and express CHIKV VLPs. Additionally, the invention also makes preliminary studies on the immune effects of CHIKV VLPs and applicationof CHIKV VLPs in virus specific antibody detection, thus laying a foundation for research and preparation of immunological detection reagents and even vaccines based on CHIKV VLPs.

A metal treatment composition including Tin (II) Chloride and processed montmorillonite clay. The addition of Tin (II) Chloride to the composition provides Tin for forming a ceramic-metal layer on the surfaces of the friction pair. Tin (II) Chloride provides Chlorine ions for forming Chloric films for protecting juvenile surfaces which form in the friction zone. The clay is heated and pulverized to produce a powder comprising both particles having crystalline layer structure and salts and oxides. The layered crystalline structure of the clay contains slip planes that transversely shift when tangential pressure from the friction pair is applied thereby lubricating the friction pair. The salts and oxides contribute to the formation of the ceramic-metal layer.

The invention discloses a monoclonal antibody against virulent strain E2 protein of classical swine fever virus and a hybridoma cell strain secreting the monoclonal antibody. The hybridoma cell strain is obtained by using hog cholera lapinized virus vaccine strain E2 protein expressed by Baculovirus as tolerogen, selecting Shimen strain E2 protein as immunogen, immunizing mouse by cyclophosphamide immunosuppression method, carrying out cell fusion, and sieving hybridoma cell strain capable of stably secreting monoclonal antibody against E2 protein. The monoclonal antibody can react with Shimen strain and can produce specific reaction with virulent strain of classical swine fever viruses of 1.1, 2.1, 2.2 and 2.3 gene sub-groups. The monoclonal antibody has neutralization activity and does not react with hog cholera lapinized virus vaccine strain, so that the monoclonal antibody can be used for differentiating virulent strain of classical swine fever virus and hog cholera lapinized virus vaccine strain, which establishes the foundation for establishing a method for differentiating wild virus infection of classical swine fever and vaccine immunity and for researching the molecular difference between CSFV virulent strain and mild strain.

To provide a heat shock transcription factor (HSF) 2 binding factor, which can be involved in the transcriptional regulation of HSP70.2 playing an essential role in spermatogenesis; a DNA encoding the binding factor; an expression vector carrying the DNA; a transformant harboring the expression vector; a process for preparing a recombinant protein comprising the step of culturing the transformant; an antibody or a fragment thereof capable of specifically binding to the binding factor; an antisense DNA or antisense RNA complementary to the DNA; and an oligonudeotide probe or primer capable of specifically hybridizing to the DNA.

There is proposed a system for managing fire of snipers, including a central station (CS) and a plurality of N individual kits (IK), each operated by one sniper. Preferably, the IK includes: --a rifle, --an optical sight (OS) mounted on the rifle with a mechanism for correction of the OS, --equipment including devices activating the rifle's firing pin; --a laser target designator having an axis coinciding with the OS axis, satellite navigation receiver (SNR), video-camera, symbol generator, adding device summarizing output signals, readiness sensor installed on the rifle's trigger, command decoder; zoom-lens actuator; electronic switches controlling the zoom-lens actuator, laser rangefinder; commutator receiving output signals from the laser rangefinder and SNR, and radio-modem module (IK-RM) provided with a two-way communication with the CS furnished with certain devices specified therein. The system enhances the synchronousness and target hit accuracy, and is capable of counteraction to acoustic counter-sniper systems.

The invention relates to the modification of antibodies reactive to human tumor necrosis factor alpha (TNF alpha) to result in anti-TNF alpha antibodies that are substantially non-immunogenic or less immunogenic than any non-modified parental antibody when used in vivo. The invention relates also to peptide molecules comprising T-cell epitopes of the V-regions of the parental antibody which are modified by amino acid alteration in order to reduce or eliminate said T-cell epitopes.

The invention provides a monoclonal antibody targeting at Zika virus envelop protein conserved epitope and application thereof. specifically, a recombinant expressed Zika virus E-protein immune mouseis used herein to attain a murine monoclonal antibody specific to E-protein. Research results show that the antibody herein is an ideal Zika virus detection antibody and is applicable to the development antibody drugs against Zika virus. Identification of a conserved neutralizing epitope can also guide the development of broad-spectrum Zika virus vaccines.

The present invention provides piperazine derivatives exhibiting high affinity to the stem region (viral membrane proximal part) of influenza hemagglutinin as determined through competition binding and high virus neutralization activity while having low cytotoxity. Furthermore, the present invention relates to pharmaceutical compositions comprising said piperazine derivatives, methods of preparing said piperazine derivatives, as well as said piperazine derivatives for use in medical prevention or treatment, especially for preventing or treating influenza.

The invention relates to the field of antibodies, in particular to a monoclonal antibody specifically combined with Taq DNA polymerase and application of the monoclonal antibody. The monoclonal antibody provided by the invention is specifically combined with Taq DNA polymerase to neutralize the excision and/or polymerization activity of the Taq DNA polymerase, and releases the combined Taq DNA polymerase under a thermal activation condition, so that the excision and/or polymerization activity of the Taq DNA polymerase is recovered.

Provided are antibodies that bind and inhibit CD73, are capable of increasing the proliferation of T cells in the presence of CD39-expressing B cells and ATP. The invention also relates to cells producing such compounds; methods of making such compounds, and antibodies, fragments, variants, and derivatives thereof; pharmaceutical compositions comprising the same; methods of using the compounds to diagnose, treat or prevent cancer.

The invention relates to a monoclonal antibody Q206 and application. The protected monoclonal antibody Q206 is an IgG antibody, and consists of a light chain and a heavy chain, wherein a CDR1 (complementarity determining region 1), a CDR2 and a CDR3 in a variable area of the heavy chain are sequentially 45th to 52nd amino acid residues, 70th to 79th amino acid residues and 118th to 128th amino acid residues from an N-terminal in a No.3 sequence of a sequence table; a CDR1, a CDR2 and a CDR3 in a variable area of the light chain are sequentially 45th to 53rd amino acid residues, 77th to 73rd amino acid residues and 110th to 123rd amino acid residues from an N-terminal in a No.5 sequence of the sequence table. The monoclonal antibody Q206 has the advantage that the important application value on the prevention and control of a Zaire subtype of an Ebola virus is realized.

The invention discloses a monoclonal antibody ZK2C2 and application. The invention provides an IgG antibody named as ZK2C2 and composed of light chains and heavy chains. CDR1, CDR2 and CDR3 in a heavychain variable region of the heavy chains are sequentially the No. 45-52 amino acid residues, No. 70-77 amino acid residues and No. 116-122 amino acid residues from N terminal in sequence 3 of a sequence table; CDR1, CDR2 and CDR3 in a light chain variable region of the light chains are sequentially the No. 45-52 amino acid residues, No. 70-72 amino acid residues and No. 109-119 amino acid residues from N terminal in sequence 5 of the sequence table. The invention further provides application of the IgG antibody in preparation of a medicine for inhibiting Zika virus. The antibody disclosed bythe invention has significant application value on prevention and control of Zika virus diseases and produces profound social significance.

The invention relates to the field of nucleic acid vaccines, in particular to a varicella-herpes zoster mRNA vaccine and a preparation method and application thereof. The mRNA for coding the varicella-zoster virus antigen provided by the invention contains a coding region for coding glycoprotein E of the varicella-zoster virus, and the mRNA can induce specific antibody response and CD4 + T cell response aiming at the glycoprotein E when being delivered into a body.

The invention belongs to the technical field of biological medicines, and particularly relates to a compound polypeptide molecule for targeted killing of cancer cells and a preparation method thereof. The compound polypeptide molecule comprises gallic acid, a cracking peptide and a polypeptide substrate which is connected between the gallic acid and the cracking peptide and is used for MMP-2 specific recognition degradation. In the composite polypeptide molecule, the electronegative gallic acid small molecule can effectively neutralize the electropositivity and the split membrane activity of the split peptide, so that the damage of the split peptide to normal cells in the in-vivo circulation process can be effectively prevented, and after the composite polypeptide molecule enters cancer tissues, the cancer cells secrete a large amount of MMP-2 protein, the MMP-2 protein can recognize and degrade a polypeptide substrate connected between gallic acid and lytic peptide, so that free lytic peptide is released, and the effect of killing cancer cells in a targeted manner can be achieved.

The invention discloses an AEG-1 (Astrocyte Elevated Gene-1)/1E3 monoclonal antibody with high affinity. The amino acid sequence of a variable region of a light chain of AEG-1/1E3mAb is shown as SEQ ID. NO. 1, and the amino acid sequence of a variable region of a heavy chain is shown as SEQ ID. NO. 2. The uniqueness for the gene sequence and corresponding protein sequence of a variable region of the antibody and CDR (Complementary Determined Region) sequence of the antibody are determined; the AEG-1/1E monoclonal antibody has high affinity with AEG-1, and the AEG-1 can be specifically identified and immunological reaction can be performed; and the titer of ascites is 1*10<-7>. Support is provided for researching and developing anti-AEG-1 gene engineering antibody and a diagnostic reagent.