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2018 ; 17
(5
): 7027-7036
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Integrated analysis of B?cell and T?cell receptors by high?throughput sequencing
reveals conserved repertoires in IgA nephropathy
#MMPMID29568935
Ou M
; Zheng F
; Zhang X
; Liu S
; Tang D
; Zhu P
; Qiu J
; Dai Y
Mol Med Rep
2018[May]; 17
(5
): 7027-7036
PMID29568935
show ga
Immunoglobulin A nephropathy (IgAN) is a type of glomerular disorder associated
with immune dysregulation, and understanding B?/T?cell receptors (BCRs/TCRs) may
be valuable for the development of specific immunotherapeutic interventions. In
the present study, B and T cells were isolated from IgAN patients and healthy
controls, and the composition of the BCR/TCR complementarity?determining region
(CDR)3 was analyzed by multiplex polymerase chain reaction, high?throughput
sequencing and bioinformatics. The present results revealed that the BCR/TCR CDR3
clones were expressed at very low frequencies, and the composition of clone types
in patients with IgAN was skewed; the majority of clones were unique, and only 12
BCR and 228 TCR CDR3 clones were public ones, of which 16 were expressed at a
significantly higher frequency in patients with IgAN (P<0.001). There were also
certain conserved amino acid residues between unique clones or groups, and the
residues GMDV, EQY and EQF were recurring only in the IgAN group. In addition,
some VDJ gene recombinations indicated great variation between groups, including
4 high?frequency VDJ gene recombinations in the IgAN patients (P<0.001). Immune
repertoires provide novel information, and conserved BCR/TCR CDR3 clones and VDJ
gene recombinations with great variation may be potential therapeutic targets for
IgAN patients.