Human ubiquitin-conjugating enzyme UbcH10 monoclonal antibody hybrid tumor DY03 and monoclonal antibody

A monoclonal antibody, DY03 technology, applied in the field of cell engineering, can solve the problems of high antibody price and limited protein verification, and achieve the effect of reducing the application cost

Inactive Publication Date: 2014-05-07
SOUTHERN MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there is no localized human ubiquitin-conjugating enzyme UbcH10 antibody. Some foreign companies have antibody products that can detect UbcH10, but most of them are polyclonal antibodies. For example, Abnova Corporation is a mouse-derived polyclonal antibody, and Boston Biochem , Inc. and Millipore are rabbit-derived polyclonal antibodies, Everest Biotech, Novus Biologicals, Raybiotech, Inc., and IMGENEX are goat-derived polyclonal antibodies, and Santa Cruz Biotechnology, Inc. has two different antibodies against UbcH10 Fragment antibody products, only Novus Biologicals has mouse-derived monoclonal antibody products against human ubiquitin conjugating enzyme E2C, but its immunogenic protein amino acid sequence is AAH50736 including 180 amino acids, and its monoclonal antibody subtype is IgG3b1 type, For ELISA and Western only
At the same time, the price of foreign antibodies is usually relatively expensive, which also limits the validation of the protein as a clinical target and research on its function

Method used

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  • Human ubiquitin-conjugating enzyme UbcH10 monoclonal antibody hybrid tumor DY03 and monoclonal antibody
  • Human ubiquitin-conjugating enzyme UbcH10 monoclonal antibody hybrid tumor DY03 and monoclonal antibody
  • Human ubiquitin-conjugating enzyme UbcH10 monoclonal antibody hybrid tumor DY03 and monoclonal antibody

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Embodiment 1

[0024] Example 1 Preparation and identification of the monoclonal antibody of the present invention

[0025] 1. Preparation of monoclonal antibody DY03

[0026] 1) Preparation of recombinant human ubiquitin-conjugating enzyme UbcH10 antigen

[0027]The UbcH10 gene was transferred from the liver cancer cell HepG2, and the prokaryotic recombinant expression vector pET22b(+) / UbcH10 was constructed in Escherichia coli Escherichia coli Expressed in BL21, purified by Ni Sepharose affinity chromatography purification column to obtain recombinant human UbcH10 protein with a purity of more than 90%.

[0028] 2) Immunization of mice

[0029] 6-8 week old female BALB / c mice were immunized with purified recombinant antigen.

[0030] The first immunization: After mixing the recombinant antigen with an equal volume of Freund's complete adjuvant, inject BALB / c mice subcutaneously with multiple points of 50 μg / 500 μL each;

[0031] The second immunization: After 2 weeks, take the recomb...

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Abstract

The invention discloses a human ubiquitin-conjugating enzyme UbcH10 monoclonal antibody hybrid tumor DY03 and a monoclonal antibody. The human ubiquitin-conjugating enzyme UbcH10 monoclonal antibody hybrid tumor DY03 is collected in the China General Microbiological Culture Collection Center (CGMCC) with the collection number of CGMCC No.4336 on November 19, 2010. The produced monoclonal antibody can be specifically recombined with a natural human ubiquitin-conjugating enzyme UbcH10 protein and can be applied to ELISA (Enzyme-Linked Immuno Sorbent Assay), western-blot, cell immunofluorescence and immune tissue chemical staining research of clinical tissue samples. Meanwhile, the antibody can be prepared into an immunodetection reagent for laboratory and clinical detection of the expression situation of the human ubiquitin-conjugating enzyme UbcH10.

Description

technical field [0001] The invention relates to the field of cell engineering, in particular to a human ubiquitin coupling enzyme UbcH10 monoclonal antibody hybridoma DY03 and the monoclonal antibody. Background technique [0002] Early diagnosis of tumors is of great significance to the treatment and prognosis of cancer patients. Currently, commonly used clinical tumor markers such as alpha-fetoprotein AFP and CEA lack sufficient detection specificity and sensitivity. Therefore, it is necessary to select more specific detection targets. point. [0003] There are two main pathways for intracellular protein degradation: the proteasomal pathway and the lysosomal pathway. Most short-lived proteins are degraded by the proteasomal pathway. Most proteins degraded by the proteasome pathway are first ubiquitinated and then degraded by the proteasome. Therefore, this pathway is also called the ubiquitin-proteasome pathway (ubiquitin proteasome pathway; UPP). UbcH10 belongs to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N5/20C07K16/40C12N15/06G01N33/577
Inventor 杜红延姚小艳徐伟文李明
Owner SOUTHERN MEDICAL UNIVERSITY
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