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2014 ; 4
(ä): 6778
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Toward a more accurate view of human B-cell repertoire by next-generation
sequencing, unbiased repertoire capture and single-molecule barcoding
#MMPMID25345460
He L
; Sok D
; Azadnia P
; Hsueh J
; Landais E
; Simek M
; Koff WC
; Poignard P
; Burton DR
; Zhu J
Sci Rep
2014[Oct]; 4
(ä): 6778
PMID25345460
show ga
B-cell repertoire analysis using next-generation sequencing has become a valuable
tool for interrogating the genetic record of humoral response to infection.
However, key obstacles such as low throughput, short read length, high error
rate, and undetermined bias of multiplex PCR method have hindered broader
application of this technology. In this study, we report several technical
advances in antibody repertoire sequencing. We first demonstrated the ability to
sequence antibody variable domains using the Ion Torrent PGM platform. As a test
case, we analyzed the PGT121 class of antibodies from IAVI donor 17, an
HIV-1-infected individual. We then obtained "unbiased" antibody repertoires by
sequencing the 5'-RACE PCR products of B-cell transcripts from IAVI donor 17 and
two HIV-1-uninfected individuals. We also quantified the bias of previously
published gene-specific primers by comparing the repertoires generated by 5'-RACE
PCR and multiplex PCR. We further developed a single-molecule barcoding strategy
to reduce PCR-based amplification noise. Lastly, we evaluated several new PGM
technologies in the context of antibody sequencing. We expect that, based upon
long-read and high-fidelity next-generation sequencing technologies, the unbiased
analysis will provide a more accurate view of the overall antibody repertoire
while the barcoding strategy will facilitate high-resolution analysis of
individual antibody families.