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The Skewness of Alpha Beta T Cell Receptors in Peripheral Blood of the Patients with Type 1 Diabetes.

AIM
To detect the skewness of TCR Vα and TCR Vβ of patients with type 1 diabetes (T1D).


METHODS
The heparinized venous blood was collected from ten patients with T1D. The peripheral blood lymphocytes (PBL) were isolated and used to extract mRNA. Reverse amplyfication was performed for cDNA synthesis. The skewness of TCR Vα and Vβ was detected with real-time florescence quantitative polymerase chain reaction (RQ-PCR) and analyzed by DNA melting-curve analysis technique, respectively.


RESULTS
Among the TCR Vα genes, the skewness frequency rate (SFR) of Vα22 was 30%; both of Vα5 and Vα24 were 20%; Vα28 was the only restricted-clone gene with the SFR of 10%. In all the Vβ genes, Vβ7 and Vβ17 were the the highest expression genes, and their SFRs were both 60%. Vβ11 was near them with the SFR of 40%; the restricted clonal genes were Vβ18 and Vβ20, their SFRs were 10% and 20%, respectivley.


CONCLUSION
There are skewd genes in TCR Vα and TCR Vβ, which are probably relative to the onset of T1D.