T Cell Repertoire Diversity Is Decreased in Type 1 Diabetes Patients
- Author:
Tong YIN
1
;
Li ZHOUFANG
;
Zhang HUA
;
Xia LIGANG
;
Zhang MENG
;
Xu YING
;
Wang ZHANHUI
;
Deem W MICHAEL
;
Sun XIAOJUAN
;
He JIANKUI
Author Information
1. Department of Biology
- Keywords:
Diversity;
High-throughput sequencing;
Immune repertoire;
T cell receptor;
Type 1 diabetes
- From:
Genomics, Proteomics & Bioinformatics
2016;14(6):338-348
- CountryChina
- Language:Chinese
-
Abstract:
Type 1 diabetes mellitus (T1D) is an immune-mediated disease. The autoreactive T cells in T1D patients attack and destroy their own pancreatic cells. In order to systematically investigate the potential autoreactive T cell receptors (TCRs), we used a high-throughput immune repertoire sequencing technique to profile the spectrum of TCRs in individual T1D patients and controls. We sequenced the T cell repertoire of nine T1D patients, four type 2 diabetes (T2D) patients and six nondiabetic controls. The diversity of the T cell repertoire in T1D patients was significantly decreased in comparison with T2D patients (P = 7.0E08 for CD4+ T cells, P = 1.4E04 for CD8+ T cells) and nondiabetic controls (P = 2.7E09 for CD4+ T cells, P = 7.6E06 for CD8+ T cells). Moreover, T1D patients had significantly more highly-expanded T cell clones than T2D patients (P = 5.2E06 for CD4+ T cells, P = 1.9E07 for CD8+ T cells) and nondiabetic controls (P =1.7E07 for CD4+ T cells, P= 3.3E03 for CD8+ T cells). Furthermore, we identified a group of highly-expanded T cell receptor clones that are shared by more than two T1D patients. Although further validation in larger cohorts is needed, our data suggest that T cell receptor diversity measurements may become a valuable tool in investigating diabetes, such as using the diversity as an index to distinguish different types of diabetes.
