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Liver cancer superantigen immunogene therapy agent

A gene therapy and superantigen technology, applied in the field of genetic engineering, can solve the problems of unsuccessful research reports, late start, and lag in gene therapy for liver cancer, and achieve the effects of preventing recurrence, enhancing curative effect, and treating metastatic lesions.

Inactive Publication Date: 2004-10-20
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tumor gene therapy is a new biological treatment method that has emerged since the latter part of the last century. American biotechnology companies have invested about US$1 billion in gene therapy research and clinical practice, accounting for more than 60% of the total research funding (National Reference Center for Literature, USA), our country started relatively late in gene therapy and is in a relatively lagging state, and there is no successful research report on gene therapy for liver cancer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061] Embodiment (concrete operation and application):

[0062] (1) Construction of therapeutic target genes SEA and B7.1 and their plasmids with AFP promoter and enhancer as regulatory elements

[0063] 1. Select AFP high-secreting liver cancer cells, isolate the total DNA of the cell genome, design specific primers, and amplify the sequence of the AFP promoter and cis-enhancer on chromosome 4 by PCR, and use CAT (chloramphenicol to acetyl base enzyme) reporter system to detect regulatory activity and ability in CHO cells;

[0064] 2. Nested PCR site-directed mutation of H81, H187, H225, D227 and other sites of SEA, using single-point or combined mutation, inserting the mutant product into the pCDNA3.1 vector, transfecting CHO cells, and detecting the combination of the expressed product and MHCII molecules Ability and immune activation status;

[0065] 3. Through computer software two-dimensional and three-dimensional structure-assisted analysis of linear and spatial stru...

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PUM

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Abstract

A super-antigen immune gene treater for liver cancer is characterized by that the liver cancer cell specific regulation sequence mediated super-antigen moleculae and co-stimulation moleculae are target expressed in liver cancer cells to specifically enhance the immunogenicity of cancer cell and the recognition action to immunoeffect cells. after the treater is injected to cancer region, it can effectively kill cancer cells.

Description

1. Technical field [0001] The invention relates to genetic engineering technology, in particular to a preparation method of a liver cancer superantigen immune gene therapy agent. 2. Background technology [0002] Hepatocellular carcinoma (liver cancer) is one of the most common malignancies. At present, surgical resection is still the main treatment for liver cancer, but recurrence and metastasis often occur after surgery, and the mortality rate remains high. Tumor gene therapy is a new biological treatment method that has emerged since the latter part of the last century. American biotechnology companies have invested about US$1 billion in gene therapy research and clinical practice, accounting for more than 60% of the total research funding (National Reference Center for Literature, USA), my country started relatively late in gene therapy and is in a relatively lagging state. There has not been any successful research report on gene therapy for liver cancer. 3. Content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K48/00A61P35/00
Inventor 隋延仿
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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