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DNA (Deoxyribonucleic Nucleic Acid) probe library for hybridization with BCR or ABL gene and method for enriching BCR-ABL gene segments

A technology of DNA probes and gene fragments, applied in the field of enrichment and extraction of BCR-ABL gene fragments

Active Publication Date: 2014-03-26
NANJING SHIHE MEDICAL DEVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Aiming at the above-mentioned technical problems, the present inventor has developed a method for capturing BCR-ABL gene fragment sequences based on hybridization selection through a large number of experiments. In the case that the subject has the BCR-ABL gene, this method can obtain thousands of times enriched BCR-ABL gene fragments, the enriched BCR-ABL gene fragment samples can be selectively applied to various gene detection techniques, especially the next generation sequencing technology can be applied to gene mutations, deletions, increases, and Detection of inversion etc.

Method used

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  • DNA (Deoxyribonucleic Nucleic Acid) probe library for hybridization with BCR or ABL gene and method for enriching BCR-ABL gene segments
  • DNA (Deoxyribonucleic Nucleic Acid) probe library for hybridization with BCR or ABL gene and method for enriching BCR-ABL gene segments
  • DNA (Deoxyribonucleic Nucleic Acid) probe library for hybridization with BCR or ABL gene and method for enriching BCR-ABL gene segments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0151] Example 1: Enrichment and detection of BCR-ABL fusion genes in K-562 cell line and MDA-MB-231 cell line

[0152] 1. Prepare the DNA sample bank of the cell line to be tested separately

[0153] 1. Extract K-562 cell line (human chronic leukemia cell line, from ATCC cell bank, catalog number: ATCC-CCL-243) and MDA-MB-231 cell line (human breast cancer cell line, from ATCC cell bank, catalog number: HTB-26), and then fragment it (the DNA sample bank obtained in this way is called "DNA sample bank derived from the whole genome")

[0154] 1.1 DNA extraction

[0155] Using Qiagen Blood&Tissue DNeasy Kit (Product No.: 69506), the whole genome DNA was extracted from the two cell lines respectively. Operate according to the instructions in the manual.

[0156] Use spectrophotometer and gel electrophoresis system to detect the quality and concentration of DNA. The 260nm absorbance of dsDNA is greater than 0.05, and the absorbance A260 / A280 ratio between 1.8 and 2 is qualif...

Embodiment 2

[0233] Example 2: Enrichment and detection of BCR-ABL fusion gene in KU812 cell line

[0234] Using the probe library consisting of SEQ ID NO.1 to SEQ ID NO.31 obtained in Example 1, the same method as in Example 1 was used to detect the KU812 cell line (human chronic leukemia cell line, from the ATCC cell bank, Item No.: ATCC-CRL-210) BCR-ABL gene, BCR:ABL gene fusion was found in KU812 cell line, the fusion points are Chr22:23632851, Chr9:133650197.

[0235] After DNA extraction, PCR amplification and Sanger sequencing, the above mutations have been verified.

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Abstract

The invention provides a DNA (Deoxyribonucleic Nucleic Acid) probe library for hybridization with a BCR or ABL gene and a method for enriching BCR-ABL gene segments. The DNA probe library comprises one or more DNA probes capable of being hybridized with the BCR or ABL genes. The invention also provides a method for enriching BCR-ABL gene segments by using the DNA probes. On this basis, the invention also provides a method for detecting whether the mutation of the BCR-ABL gene or the gene structure thereof exists. The method provided by the invention is capable of obtaining the gene segments through enrichment by thousands of times; the method can be applied to the next generation sequencing technology to detect whether the mutation of the BCR-ABL gene or the gene structure thereof exists, including single base mutation, mRNA (messenger Ribose Nucleic Acid) deletion or amplification, mRNA structure transversion and mRNA splicing change.

Description

technical field [0001] The present invention relates to the field of gene detection. Specifically, the present invention relates to a method for enriching and extracting BCR-ABL gene fragments. Detection of BCR-ABL gene and its gene structure mutation. Background technique [0002] DNA sequencing technology is undergoing drastic changes. Its outstanding feature is the observation and analysis of many sites at the same time (massively parallel), so as to gradually achieve a substantial increase in sequencing throughput. The cost of sequencing each base in the original data a sharp decline. Based on this, previously unattainable luxury activities (such as personal gene sequencing, metagenomics research) have gradually become more and more feasible. Especially with the development of science, because the traditional Sanger sequencing can no longer fully meet the needs of research, next-generation sequencing technology (Next-generation sequencing) came into being. [0003] Ne...

Claims

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Application Information

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IPC IPC(8): C12N15/11C40B40/06C12N15/10C12Q1/68
Inventor 邵阳
Owner NANJING SHIHE MEDICAL DEVICES CO LTD
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