PCR (Polymerase Chain Reaction) specific primer and kit for detecting thyroid cancer metastasis associated gene, and using method of kit

A gene detection and thyroid cancer technology, applied in the field of molecular biology, can solve the problems of being unable to detect unknown mutations, prone to false positives, low sensitivity, etc., achieve minimally invasive non-hazardous detection and auxiliary diagnosis, and improve detection efficiency and accuracy, the effect of simplifying the operation steps

Active Publication Date: 2018-07-24
GUANGDONG GENERAL HOSPITAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional serial section HE staining method has low sensitivity and needs to cut dozens or even hundreds of sections, which has been rarely used in recent years; immunohistochemical method is relatively simple to operate, with high sensitivity and specificity, but it is time-consuming and prone to False positive and false negative; the advantages of flow cytometry are fast speed, high precision, and good accuracy, but the disadvantage is that specific fluorescent dyes are required and the cost of instruments and reagents is high; PCR / RT-PCR technology is amplified Tumor cell marker genes or target RNA are used to detect tumor metastasis. The biggest advantage is high sensitivity, but the PCR method can only be designed for one or several known mutation sites, and cannot be used to detect unknown mutations; Qualcomm Quantitative sequencing is a next-generation sequencing technology that can perform high-throughput sequencing of multiple samples. It is time-consuming, high-precision, and large in data volume. It can detect both known mutation sites and unknown mutations.
[0006] Although high-throughput sequencing technology has been widely used in the detection of unknown mutations, there are still no effective, accurate and easy-to-use targeted mutations due to the limitations of numerous genes related to thyroid cancer metastasis and the design of amplification primers. PCR-specific primers for detection of genes related to metastasis of thyroid cancer and related detection methods

Method used

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  • PCR (Polymerase Chain Reaction) specific primer and kit for detecting thyroid cancer metastasis associated gene, and using method of kit
  • PCR (Polymerase Chain Reaction) specific primer and kit for detecting thyroid cancer metastasis associated gene, and using method of kit
  • PCR (Polymerase Chain Reaction) specific primer and kit for detecting thyroid cancer metastasis associated gene, and using method of kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 A multiplex PCR-specific primer, kit and detection method for the detection of thyroid cancer metastasis-related genes based on high-throughput sequencing technology

[0055] 1. Design of primers

[0056] The thyroid cancer metastasis-related gene sequences involved in this example were selected from the UCSC (University of California Santa Cruz, University of California, Santa Cruz) database, and hotspot mutation primers were designed based on the relevant gene sequences, and the design scope included the thyroid cancer metastasis-related genes Mutation hotspots.

[0057] Such as figure 1 As shown, in this example, a total of 16 pairs of primers were designed for the hotspot mutation of thyroid cancer metastasis-related genes. The size of each pair of PCR-specific primers amplifies the target region is 100-150 bp, and the size of the amplified product is 250-300 bp. wide, stable structure, and multiple detection sites.

[0058] Specifically, the 16 pairs o...

Embodiment 2

[0083] Example 2 Primer Specificity Verification

[0084] Nucleic acid was extracted from peripheral blood samples (number: 1-3), fine needle puncture samples (number: 4-6), and paraffin tissue samples (number: 7-9) using the method of step S11 in Example 1, and the concentration and purity were determined. After the determination, take qualified samples and use 10mM Tris to dilute each sample to 100ng / μL, and use 1% agarose gel electrophoresis to detect the quality of each sample (the qualification standard is the same as step S11 in Example 1), and enter the group after passing the test and perform mark. Using the method of step S12 in Example 1, the above-mentioned 9 cases of qualified samples were amplified, and the sample volume was 2 μL each. After the amplified product was purified, it was detected by 1% agarose gel electrophoresis (the qualification standard was the same as in Step S13 in Example 1. step), 9 cases of samples were detected by amplification and detectio...

Embodiment 3

[0086] Example 3 Primer Detection Sensitivity Verification

[0087] Using the method of step S11 in Example 1, sample nucleic acids were extracted from peripheral blood samples (number: 1), fine needle aspiration samples (number: 4), and paraffin tissue samples (number: 7) that passed the quality inspection to verify the sensitivity of primer detection. The initial concentration of each sample is 100ng / μL, and it is diluted according to the concentration gradient of 5 times, 10 times and 20 times. After dilution, the concentration of each sample is 20ng / μL, 10ng / μL and 5ng / μL respectively, and the sample name and Concentration marks. The method of step S12 in Example 1 was used to amplify the above-mentioned 9 cases of qualified diluted samples with a sample volume of 2 μL each, and the 9 cases of samples were detected using the specific primer amplification and detection method for thyroid cancer metastasis-related genes. The control test is the same as in Example 1, and the...

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Abstract

The invention discloses a PCR (Polymerase Chain Reaction) specific primer and a kit for detecting a thyroid cancer metastasis associated gene, and a using method of the kit. The thyroid cancer metastasis associated gene related to PCR specific primer and the kit, which are independently researched and developed and are based on a high throughput sequencing technology, for detecting the thyroid cancer metastasis associated gene and the using method of the kit is subjected to sample validation, the PCR specific primer, the kit and the using method can be used for detecting a mutation situation of the thyroid cancer metastasis associated gene, a detection result can be used as an intermediate result together with other detecting results for judging whether cancer cells are metastasized or notor the cancer cells have the possibility of metastasis or recurrence, and an important significance in treatment and prognosis of thyroid cancer is obtained; in addition, limit of a traditional detecting technology is broken through by utilizing the high throughput sequencing technology, the detection sensitivity is increased, and even low-abundance mutant genes can also be detected, so that theimportant significance in aided prediction on spreading and recurrence of thyroid cancer cells is obtained.

Description

technical field [0001] The invention relates to the field of molecular biology, in particular to a PCR-specific primer for detecting thyroid cancer metastasis-related genes, a kit and a use method thereof. Background technique [0002] The thyroid is the largest endocrine organ in the human body, and thyroid cancer is a common endocrine tumor. Thyroid tumors are divided into benign and malignant, among them, malignant thyroid tumors include papillary carcinoma, follicular carcinoma, medullary carcinoma and undifferentiated carcinoma. Differentiated thyroid cancer accounts for 90% of all thyroid cancers. Undifferentiated thyroid cancer is rare, but it has a high degree of malignancy and poor prognosis. [0003] In the past 30 years, the incidence of thyroid cancer in most regions of the world, including my country, has been on the rise. In 2010, the incidence rate of thyroid cancer in my country was 4.12 / 100,000, male was 1.93 / 100,000, and female was 6.42 / 100,000; the morta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/6886C12Q1/6869C12N15/11
CPCC12Q1/6869C12Q1/6886C12Q2600/118C12Q2600/156C12Q2535/122
Inventor 邝建朱瑞娟赖水青朱奇王龙郑泽鑫陈志江
Owner GUANGDONG GENERAL HOSPITAL
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