Method for simultaneously sequencing multi-sample CDR3 (complementary determining region 3) receptor library with high flux

Abstract

The invention discloses a method for simultaneously sequencing a multi-sample CDR3 (complementary determining region 3) receptor library with a high flux, comprising the following steps of: only designing one set of V-gene family upstream primers in the variable region of a TCR (T cell antigen receptor) or BCR (B cell antigen receptor) chain according to the homology of the V-gene family, then designing C or J gene characteristic downstream primers of the TCR or BCR chain as many as samples and suitable for being paired with the upstream primers, amplifying each sample by one characteristic downstream primer and the same set of upstream primers to obtain a CDR3 region of the TCR or BCR, then mixing all the amplified samples to be a to-be-sequenced sample library, finally sequencing, wherein the characteristic downstream primers are designed by different ATCG basic group compositions. The CDR3 sequences of multiple samples can be simultaneously sequenced by operating one high-flux sequencing program via the method for simultaneously sequencing a multi-sample CDR3 receptor library with a high flux disclosed by the invention, so that the high-flux sequencing cost is greatly decreased. Thus, a high-flux sequencing technology has a wide application value in a sequencing research of a CDR3 receptor library.

Description

technical field [0001] The invention relates to a sequencing method for a T / B cell CDR3 receptor library, in particular to a method for simultaneously sequencing multiple CDR3 receptor libraries with high throughput. Background technique [0002] In the past two decades, the TCR / BCR CDR3 receptor library of T / B lymphocytes has been used in the development, evolution, differentiation, proliferation and maturation of T / B cells, research on subgroups, and the relationship between T / B cells and infection, tumors, and autoimmunity. It has been widely used in the research of diseases, stem cells and organ transplantation. The CDR3 receptor library research technology is based on the TCR / BCR gene rearrangement rules, setting upstream primers in the variable region (variable) genes of TCR (alpha / beta / gamma / delta chain) and BCR (heavy / light chain), and connecting Set downstream primers in the joining J gene or the constant C gene, amplify the PCR product of the target chain by PCR, ...

AI Technical Summary

Problems solved by technology

[0004] However, when high-throughput sequencing technologies such as Roche 454 sequencing platform and Illumina's solexa sequencing platform are used to sequence the CDR3 receptor library, different upstream and downstream primers are designed for different samples, and the cost of sample preparation before sequencing is high and the workload is heavy. , the operation is cumbersome, and the cost of high-throughput sequencing is extremely high

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