High-throughput single-cell transcriptome and gene mutation integration analysis method

An integrated analysis and single-cell technology, applied in the direction of biochemical equipment and methods, microbial measurement/testing, etc., can solve problems such as not suitable for comprehensive promotion, cumbersome operation, and inability to realize direct identification of tumor cell populations

Inactive Publication Date: 2019-12-17
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the three-generation sequencing technology used in this study to detect mutations has great limitations. The mutation detection rate is limited by the specific mutation site. The highest single mutation detection rate is only 23%, and the average number of cells that can detect mutations does not exceed 5%, the author finally used the random forest machine learning algorithm to predict the tumor population, which could not realize the direct identification of the tumor cell population, and did not correspond well to the heterogeneity of the genome and transcriptome
Moreover, the technique is cumbersome to operate, requires a high sample volume, and costs a lot, making it unsuitable for general promotion.

Method used

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Embodiment 1

[0039] Embodiment 1 provides a high-throughput single-cell coding chip

[0040] The chip is provided with a plurality of microwells on its substrate, each of which has a unique spatial coordinate code, and several known nucleic acid sequences for capturing target RNA are modified in the microwells, so The nucleic acid sequence includes a cell label for marking the cell from which the RNA originates and a molecular label for marking the bound RNA, and the cell label of each microwell is in one-to-one correspondence with the spatial coordinate code.

[0041] Wherein, the nucleic acid sequence also includes a Spacer sequence, a universal primer sequence as a primer binding region during PCR amplification, and Ploy T. In a further preferred embodiment, the modified nucleic acid sequence in each microwell is not less than 10 6 strip. A molecular tag is a known random nucleic acid sequence.

[0042] Here, the microwells have a size and shape that can accommodate only a single cel...

Embodiment 2

[0052] Example 2 Using the chip of Example 1 to perform integrated analysis of single-cell transcriptome and gene mutation, refer to figure 1 , including the following steps:

[0053] 1. Single cell surface protein typing analysis:

[0054] The target gene of the cell is fluorescently labeled in advance, and then the cell is added to the chip, and the single cell is captured by the micropore of the chip, incubated, and then the fluorescence image is collected, and the position of the micropore on the fluorescence image is positioned. Fluorescent image analysis is used to identify the location of specific cells containing the target gene, and the cell protein expression information of each microwell location is obtained. Among them, three-color fluorescence channels are used for fluorescence imaging, and light sources of three different wavelengths are used to achieve full-band visible light coverage (wavelength 400nm-700nm).

[0055] Wherein, the method for locating the posi...

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Abstract

The invention discloses a high-throughput single-cell transcriptome and gene mutation integration analysis method. The high-throughput single-cell transcriptome and gene mutation integration analysismethod comprises the following steps that (1) a high-throughput single-cell encoding chip is provided; (2) single-cell surface protein parting analysis is conducted; (3) single-cell transcriptome mutation analysis is conducted; (4) a database for single-cell surface protein parting and mutation integration analysis is established; and (5) a high-throughput single-cell transcriptome and gene mutation integration analysis model is established. According to the high-throughput single-cell transcriptome and gene mutation integration analysis method, by designing the single-cell encoding chip withtriple encoding technologies of microporous spatial coordinates, cell nucleic acid labels and molecular nucleic acid labels and by combining the modes of single-cell surface protein parting, single-cell transcriptome mutation analysis and gene sequencing, gene mutation information, transcriptome information and protein expression information of single cells can correspond one by one, the completedatabase for high-throughput single-cell transcriptome and gene mutation integration analysis is formed, and the multi-omics integration analysis model is obtained.

Description

technical field [0001] The invention relates to the field of biological detection, in particular to a high-throughput single-cell transcriptome and gene mutation integration analysis method. Background technique [0002] Tumor is one of the major diseases that seriously affect human health. There are great differences in tumor cells from genotype to phenotype (high heterogeneity of tumors), and this high heterogeneity is related to the degree of malignancy and drug resistance of tumors. Sex, recurrence and metastasis are closely related, which is one of the root causes of difficult early diagnosis of tumors, complicated clinical diagnosis and treatment, drug-resistant recurrence and poor prognosis. A comprehensive analysis of tumor heterogeneity is the key to precise tumor treatment. [0003] The development of high-throughput sequencing technology brings hope for the analysis of heterogeneous tumor populations. At present, conventional high-throughput sequencing at variou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/6827C12Q1/6837
CPCC12Q1/6827C12Q1/6837
Inventor 李金泽周连群张芷齐张威郭振李传宇姚佳李超
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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