Method for detecting single cell mitochondrial copy number

Abstract

A method for detecting single cell mitochondrial copy number comprise that following steps of: (1) designing primer and probes: designing a pair of primers (SEQ ID NO: 1 and SEQ ID NO: 2) of about 1000 bp for product length for standard preparation according to mitochondrial DNA 11778 site G) A mutation; designing a pair of Taqman probes (SEQ ID NO: 3-6) for detection; (2) Single cell lysis and detection: Taqman quantitative detection is performed directly after the sample is treated with the prepared lysis solution; (3) Data analysis: The mitochondrial copy number is calculated by the standard curve method of Ct value. The invention has the advantages of simple operation steps, low technical level requirement for operators, simple data analysis method, and can be analyzed as long as basicExcel knowledge is possessed. The invention solves the purpose of detecting single cell mitochondrial copy number in clinic, and is suitable for clinical popularization. The invention has the advantages of simple operation steps, low technical level requirement for operators, and simple data analysis method.

Description

technical field [0001] The invention relates to a single-cell mitochondrial copy number detection method. Background technique [0002] Mitochondria is an important organelle for eukaryotic cells to generate energy. It contains its own genome and has a relatively independent DNA replication, transcription and translation system. It is a semi-autonomous cell line and is responsible for cellular energy metabolism and free radical generation. Mitochondria contain their own DNA. Mammalian mitochondrial DNA (MitochondrialDNA, mtDNA) is a double-stranded closed-loop molecule with a full length of about 16569bp. It contains 37 genes and 1 non-coding control region. This region is the D loop, which has the control mtDNA Regulatory sequences for transcription and translation. There is only one set of nuclear genome in each cell, but there can be hundreds of mitochondria, and each mitochondria contains 1-15 mtDNA molecules. The normal operation of the oxidative respiratory chain of c...

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Problems solved by technology

[0004] The reported quantitative techniques for mtDNA have the following shortcomings: (1) DNA extraction is required; (2) detection techniques are mostly aimed at somatic cells and blood samples, and the detection accuracy is low, and a large number of samples are required for detection; (3) the use of model simulation There are many influencing factors, different models and different experimental procedures produce inconsistent results; (4) the definition of the measurement unit of chrM is uncertain; (5) the current results are inconsistent when applied to embryos, eggs, and single cells. Stable, and can only detect the copy number of mitochondria but not the ratio

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