The Usage of Human IGHJ Genes Follows a Particular Non-random Selection: The Recombination Signal Sequence May Affect the Usage of Human IGHJ Genes.
The Usage of Human IGHJ Genes Follows a Particular Non-random Selection: The Recombination Signal Sequence May Affect the Usage of Human IGHJ Genes.
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人类IGHJ基因的使用遵循特定的非随机选择:重组信号序列可能影响人类IGHJ基因的使用
DOI:
10.3389/fgene.2020.524413
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发表时间:
2020
影响因子:
3.7
通讯作者:
Yao X
中科院分区:
文献类型:
--
作者:
Shi B;Dong X;Ma Q;Sun S;Ma L;Yu J;Wang X;Pan J;He X;Su D;Yao X
The formation of the B cell receptor (BCR) heavy chain variable region is derived from the germline V(D)J gene rearrangement according to the “12/23” rule and the “beyond 12/23” rule. The usage frequency of each V(D)J gene in the peripheral BCR repertoires is related to the initial recombination, self-tolerance selection, and the clonal proliferative response. However, their specific differences and possible mechanisms are still unknown. We analyzed in-frame and out-of-frame BCR-H repertoires from human samples with normal physiological and various pathological conditions by high-throughput sequencing. Our results showed that IGHJ gene frequency follows a similar pattern which is previously known, where IGHJ4 is used at high frequency (>40%), IGHJ6/IGHJ3/IGHJ5 is used at medium frequencies (10∼20%), and IGH2/IGHJ1 is used at low frequency (<4%) under whether normal physiological or various pathological conditions. However, our analysis of the recombination signal sequences suggested that the conserved non-amer and heptamer and certain 23 bp spacer length may affect the initial IGHD-IGHJ recombination, which results in different frequencies of IGHJ genes among the initial BCR-H repertoire. Based on this “initial repertoire,” we recommend that re-evaluation and further investigation are needed when analyzing the significance and mechanism of IGHJ gene frequency in self-tolerance selection and the clonal proliferative response.
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影响因子:
64.8
作者:
Bassing, CH;Alt, FW;Sleckman, BP
通讯作者:
Sleckman, BP
影响因子:
3.2
作者:
Fanning, L;Connor, A;Wu, GE
通讯作者:
Wu, GE
影响因子:
--
作者:
Lefranc, Marie-Paule
通讯作者:
Lefranc, Marie-Paule
影响因子:
2.9
作者:
Lefranc, MP;Pommié, C;Lefranc, G
通讯作者:
Lefranc, G
影响因子:
10.5
作者:
HESSE, JE;LIEBER, MR;GELLERT, M
通讯作者:
GELLERT, M