The invention belongs to the technical field of
gene engineering, and particularly relates to a method for acquiring single
cell of
B cell surface
receptor (BCR) or an
antibody gene of an anti-N-methyl-D-
aspartic acid receptor encephalitis patient, and further discloses
immune repertoire research of B cells of the anti-N-methyl-D-
aspartic acid receptor encephalitis patient. According to a method for amplifying a variable region and a
constant region of the single
B cell humanized antibody gene and a method based on a single
B cell reverse transcription and BCR amplification, the characteristicof
antigen-
antibody specific binding is used for the first time, a positive B
cell combined with a pathogenic
antigen NR1
protein subunit for resisting N-methyl-D-
aspartic acid receptor encephalitisis screened out in advance by using a
flow cytometry, the interference of other non-positive BCR /
antibody information is reduced, the unnecessary
workload is reduced, the correlation between the finally obtained antibody information and the
disease is stronger, the efficiency of capturing the single-
cell B cell antibody sequence is higher, the experiment steps are simpler and more convenient, andthe
operability is stronger.