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Genes Immun. 2017 Jan;18(1):22-27. doi: 10.1038/gene.2016.45. Epub 2017 Jan 5.

Direct measurement of B-cell receptor repertoire's composition and variation in systemic lupus erythematosus.

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Department of Clinical Medical Research, The Second Clinical Medical College of Jinan University (Shenzhen People's Hospital), Shenzhen, China.
Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, China.
Department of Dermatology, Second Xiangya Hospital, Central South University, Hunan Key Laboratory of Medical Epigenomics, Changsha, China.
Department of Cancer Research, Shenzhen University, Shenzhen, China.
Department of Basic Medical Sciences, Wuhan University, Wuhan, China.


Systemic lupus erythematosus (SLE) is a systemic autoimmune disease that is known to be associated with polyclonal B-cell hyper-reactivity. B-cell receptor (BCR) has a central role in B-cell development, activation, survival and apoptosis, and thus is a critical component of the regulation of both protective and autoreactive B cells. In this study, we applied multiplex PCR and Illumina high-throughput sequencing to study the composition and variation of the BCRs in peripheral blood mononuclear cells from SLE patients and healthy donors (NC). We found that SLE group displayed significantly shorter CDR3 average length (14.86±0.76aa vs 15.70±0.43aa), more arginine percentage of CDR3 amino acids (7.57±0.20% vs 7.32±0.19%) and poorer immunological diversity than the healthy ones. CDR3 sequence YGMDV present in all SLE samples may provide more information in generating more effective B-cell targeted diagnosis/therapies strategies.

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