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TIMM21 mutant gene as well as primer, kit and method for detecting TIMM21 mutant gene and application of TIMM21 mutant gene

A technology of TIMM21 and gene, applied in the field of TIMM21 mutant gene

Active Publication Date: 2021-08-17
北京福君基因生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nearly a thousand nuclear genome genes have been found to be related to the function of mitochondria, only a small number of them have been confirmed to be related to the occurrence of LIMD, suggesting that there are new LIMD pathogenic genes to be discovered

Method used

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  • TIMM21 mutant gene as well as primer, kit and method for detecting TIMM21 mutant gene and application of TIMM21 mutant gene
  • TIMM21 mutant gene as well as primer, kit and method for detecting TIMM21 mutant gene and application of TIMM21 mutant gene
  • TIMM21 mutant gene as well as primer, kit and method for detecting TIMM21 mutant gene and application of TIMM21 mutant gene

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Experimental program
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Embodiment 1

[0073] In this example, whole-exome high-throughput sequencing was performed on multiple families of patients with lethal infantile mitochondrial disease (LIMD), which included the following steps in sequence:

[0074] (1) Sample collection and extraction of genomic DNA.

[0075] The clinical data and blood samples (EDTA anticoagulation) of family members were collected, and the samples were blood samples sent to Furui Medical Laboratory Co., Ltd. for inspection.

[0076] The blood genomic DNA of each member of the family was extracted according to the instructions of the blood DNA extraction kit (Magen, HiPure Blood & Tissue DNA Kit). Use Nanodrop one to measure the purity of DNA. The OD260nm / OD280nm of the obtained genomic DNA is between 1.7-2.0. Use Nanodrop one to measure the concentration of DNA. The concentration of the obtained genomic DNA is 50-100ng / μL, and the total amount is 5-10μg. Store at -20°C.

[0077] (2) Exome sequencing and bioinformatics analysis.

[007...

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Abstract

The invention relates to a TIMM21 mutant gene related to LIMD, a primer, a kit and a method for detecting the TIMM21 mutant gene and an application of the TIMM21 mutant gene. Compared with a human genome reference sequence GRCh37, the mutant TIMM21 gene has one of the following mutations: a basic group with the physical position of No.18 chromosome being 71816137 is mutated from A to T, and a basic group with the physical position of No.18 chromosome being 71822624 is mutated from A to T; compared with the sequence of SEQ ID NO.1, the cDNA sequence of the mutant TIMM21 gene has one of the following mutations: T is less than c.94A and T is less than c.448A; compared with the sequence of SEQ ID NO.2, the sequence of the mutant TIMM21 protein has one of the following mutations: p.Lys32Ter and p.Arg150Ter. The invention provides an important basis for early molecular screening and family genetic research of the LIMD.

Description

technical field [0001] The invention relates to a disease-related mutant gene, in particular to a TIMM21 mutant gene, a primer, a kit and a method for detecting it, and an application thereof. Background technique [0002] Mitochondrial diseases have the highest incidence of all inherited metabolic diseases. Mitochondria are primarily responsible for oxidative phosphorylation to produce adenosine triphosphate. The pathogenesis of mitochondrial disease involves two distinct genomes: the nuclear genome and the maternally inherited 16.6 kb mitochondrial genome. Mitochondrial diseases can be caused by mutations in any of these genomes. Defects in nuclear DNA (nDNA) lead to problems such as respiratory chain complex structure, translation and mitochondrial DNA (mtDNA) repair defects. Approximately 25% of mitochondrial diseases diagnosed in childhood are due to abnormalities in mitochondrial DNA, while the remaining 75% are due to nDNA defects. Severe neonatal or infant-onset ...

Claims

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Application Information

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IPC IPC(8): C12N15/52C12N9/00C12N15/11C12Q1/6883
CPCC12N9/00C12Q1/6883C12Q2600/156
Inventor 王开宇马鑫瑞
Owner 北京福君基因生物科技有限公司