analysis of TCR repertoire Vβ gene clonality in chronic hepatitis B patients

simeneh zelalem limenh (
clinical laboratory, beihua univeristy
July, 2013


Objective: To determine the T-cell receptor repertoire Vβ gene clone type in the peripheral blood of chronic hepatitis B patients
Method: Complementary DNA was synthesized from RNA which was extracted from peripheral blood mononuclear cells of chronic hepatitis B patients, amplified by RT-PCR. Clonality of each amplified product was observed by imaging through scanning by gel documentation and image analyzing system (champ gel 5550) after polyacry amide gel electrophoresis (PAGE).
Result: The rate of skewed(monoclonal/oligoclonal) TCR Vβ families was higher in CD8+ T-cell subsets(35/43.9%) than in CD4+ subsets(24/29.2)(p<.01). Monoclonal TCR Vβ9 and TCR Vβ14 have been found in a relatively high frequency in CD8+ T cells and TCR Vβ1 and TCR Vβ2 in CD4+ T-cells
Conclusion: Our research on the analysis of TCR repertoire Vβ gene may be useful in understanding and evaluation of the immune mechanism against chronic hepatitis B virus infection. It can also be helpful to design new immunotherapic strategies for chronic hepatitis B. The finding of a relatively high frequency existence in some TCR Vβ families (TCR Vβ9, TCR Vβ14 and others) in these patients could be used in monitoring the health status of the patient



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