Deep sequencing of the T cell receptor Vb CDR3 repertoire of peripheral CD4+T cells in primary biliary cirrhosis / 中华肝脏病杂志
Chinese Journal of Hepatology
; (12): 580-585, 2015.
Article
em Zh
| WPRIM
| ID: wpr-290397
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To determine the immune repertoires of peripheral CD4+T cell receptor (TCR) Vb CDR3 in primary biliary cirrhosis (PBC) and analyze TCR diversity and preferred usage at sequence-level resolution.</p><p><b>METHODS</b>ARM-PCR and high-throughput sequencing were used to obtain millions of TCR Vb CDR3 sequences from peripheral CD4+T cells isolated from 7 patients with PBC and healthy volunteers. All sequencing data were analyzed, together with corresponding clinical information, by bioinformatic software. The Mann-Whitney U test was used for statistical analysis.</p><p><b>RESULTS</b>The PBC patients showed a lower level of diversity among the peripheral CD4+TCR Vb CDR3 than the healthy volunteers, and patients with higher level progression of the disease showed a greater lack of diversity. In addition, 4 specific preferred-usage amino acid sequences were discovered for the PBC patients ASSFTGGPVEQY, ASSLISSGNNEQF, ATSRDTLAGGPGDTQY, and SASLEGNTEAF; these sequences were also found in higher frequencies in patients with later stages of PBC.</p><p><b>CONCLUSIONS</b>Decreased TCR Vb CDR3 diversities and specific preferred usage of TCR CDR3 sequences in peripheral CD4+T lymphocytes in PBC suggest that clonal expansion of a large number of CD4+T cells may be an important factor for PBC progression. These data provide a better understanding about the general characteristics of CD4+T cells in PBC patients and related to pathogenesis of the disease, and may provide useful insights into potential targets for immunotherapy.</p>
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Receptores de Antígenos de Linfócitos T
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Linfócitos T CD4-Positivos
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Reação em Cadeia da Polimerase
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Sequência de Aminoácidos
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Sequenciamento de Nucleotídeos em Larga Escala
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Cirrose Hepática Biliar
Limite:
Humans
Idioma:
Zh
Revista:
Chinese Journal of Hepatology
Ano de publicação:
2015
Tipo de documento:
Article