Abstract:
A composition for preventing and treating cervical cancer, which comprises lymphotoxin alpha/beta complex (LTalpha/beta) or lymphotoxin beta receptor (LTbeta-R) binding agent is provided to use an agent for preventing or treating cervical cancer by inducing the mucosa immune response. A composition for preventing and treating cervical cancer comprises limphotoxin alpha/beta complex or limphotoxin beta receptor binding agent as an active ingredient. The lymphotoxin alpha/beta complex is a surface lymphotoxin alpha/beta complex or recombinant soluble lymphotoxin alpha/beta complex. The lymphotoxin beta receptor is an antibody to lymphotoxin beta receptor. The antigen is polyclonal antibody or monoclonal antibody.
Abstract:
A method for differentiating precursor natural killer cell into mature natural killer cell is provided to obtain large amount of the mature natural killer cell by treating the precursor natural killer cell with Axl receptor tyrosine kinase. The composition for inducing differentiation of precursor natural killer cell into mature natural killer cell is characterized in that it includes at least one ligand selected from the group consisting of antibody of Axl receptor tyrosine kinase(Axl), gamma-carboxylated growth-arrest specific gene6(Gas6) protein and protein S as a ligand of the Axl. The method comprises the steps of: (a) treating hematopoietic stem cell with interleukin-7, stem cell factor and Flt3 ligand to be differentiated into precursor natural killer cell; and (b) treating the precursor natural killer cell with at least one selected from the group consisting of antibody of Axl receptor tyrosine kinase(Axl), gamma-carboxylated growth-arrest specific gene6(Gas6) protein and protein S.
Abstract:
A composition for regulating or detecting gamma-delta T cell or cytokines secreted by the gamma-delta T cell, which contains Axl receptor tyrosine kinase, its ligand or inhibitor is provided to regulate gamma-delta T cell and prevent or treat inflammatory bowl diseases (IBD). A composition for regulating gamma-delta T cell or a cytokine which is secreted by the gamma-delta T cell comprises an Axl receptor tyrosine kinase, its ligand or its inhibitor as an active ingredient. The composition is used for preventing and treating inflammatory bowel disease. A method for screening an agent for preventing and treating inflammatory bowel disease comprises: a step of adding a test compound in Axl receptor tyrosine kinase, its ligand or inhibitor; and a step of researching the influence of test compound on the expression or activation of Axl receptor tyrosine kinase, gamma-delta T cell, or cytokine secreted by the gamma-delta T cell.
Abstract:
A method for screening therapeutic agent or suppressing tumor by regulating Axl signal is provided to increase the sensitivity of natural killer cell by the expression of LIGHT gene and induce apoptosis of tumor cell. A composition for suppressing tumor comprises LIGHT (lymphotoxin-like inducible protein that competes with glycoprotein D for binding herpesvirus entry mediator on T cells) (TNFSF14) or its activator as an active ingredient. The activator is Axl receptor tyrosine kinase or its ligand. The Axl ligand is an antibody to Axl antibody, gamma-carboxylated Gas-6(growth-arrest specific gene 6) or protein S. The tumor is lymphatic tumor. A method for screening agent for suppressing or treating tumor comprises: a step of adding a test compound to a LIGHT (TNFSF14) or its activator; and a step of researching the influence of the test compound on the expression or activation of LIGHT or its activator.
Abstract:
A composition for detecting or suppressing the expression of GA733-2 antigen containing TREM-2 (Triggering Receptor Expressed on Myeloid cells-2) gene or protein is provided to use in the investigation of cancer cause, early diagnosis of cancer and development of therapeutic agent. A composition for suppressing the expression of GA733-2 antigen comprises a TREM-2 (Triggering Receptor Expressed on Myeloid cells-2) gene or protein as an active ingredient. The expression of GA733-2 antigen in a biological sample is suppressed by adding TREM-2 gene or protein. A method for screening an agent for suppressing and treating cancer comprises: a step of adding a TREM-2 gene or protein or candidate drug which suppresses or treat cancer into transgenic animal which is transformed with TREM-2 gene; and a step of researching the influence of the candidate drug on the expression or activation of TREM-2 or GA733-2. The cancer is colon cancer.
Abstract:
A composition for preventing and treating cervical cancer, which contains AxL receptor tyrosine kinase inhibitor is provided to regulate the expression of human papilloma virus (HPV) type 16 E6 gene and reduce the proliferation and metastatic property of cancer cell. A composition for preventing and treating cervical cancer comprises an inhibitor of Axl receptor tyrosine kinase as an active ingredient. A method for screening an agent for preventing and treating cervical cancer comprises: a step of adding a test compound to the Axl receptor tyrosine kinase; and a step of researching the influence of the test sample to the expression or activation of Axl and selecting a compound which suppresses the expression or activation of Axl.
Abstract:
A method for preparing a natural killer cell is provided to treat cancer by obtaining the adult natural killer cell from an adult stem cell. A method for preparing a natural killer cell comprises the steps of: (a) treating an adult stem cell derived from cord blood of human with IL-7, SCF and Flt3L to be differentiated into a natural killer precursor cell; and (b) treating the natural killer precursor cell with Gas6. A transfectant comprises a recombinant vector pcDNA3.1(+)-GAS6.
Abstract:
A chimeric protein consisting of LTB(Escherichia coli heat-labile enterotoxin B subunit) and HPV16 E7(human papilloma virus type 16 E7) protein and use thereof are provided to produce a vaccine for preventing and treating cervical cancer capable of inducing an antibody specific to HPV16 E7 protein, and improve mucosa permeability of the vaccine by inducing mucosal immune response. The chimeric protein having the amino acid sequence of SEQ ID NO:6 consists of LTB wherein the signal peptide region is deleted, and HPV16 E6 protein. A vector E7-LTB/pET29a contains a recombinant gene encoding the chimeric protein having the nucleotide sequence of SEQ ID NO:5. The chimeric protein is produced by transforming Escherichia coli with the vector E7-LTB/pET29a to produce Escherichia coli BL21(DE3):E7-LTB/pET29a(KCTC 10895BP), culturing the Escherichia coli BL21(DE3):E7-LTB/pET29a(KCTC 10895BP), separating the chimeric protein from the cultured Escherichia coli, and removing endotoxin from the separated chimeric protein. An oral vaccine for preventing and treating cervical cancer comprises the chimeric protein as an effective ingredient.
Abstract:
Novel recombinant vectors are provided to be used for expressing triggering receptor expressed on myeloid cells 2b(TREM-2) which is expressed at the activity of natural killer cell and the differentiation process and plays important role on innate immunity. The recombinant vector pcDNA3.1-TREM-2 expresses TREM-2 involved with innate immunity. The recombinant vector pLXSN-TREM-2 expresses TREM-2 involved with innate immunity.