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|Titolo:||Identification of novel human T-cell receptor V beta gene segments by the anchored-polymerase chain reaction|
|Autori interni:||LUNARDI, Claudio|
|Data di pubblicazione:||1992|
|Abstract:||We have studied the diversity of the expressed human T-cell receptor (TCR) beta-chain repertoire by analysis of mRNA from unstimulated peripheral blood T-cells. The anchored-polymerase chain reaction (PCR) was used to isolate TCRB transcripts. Of 20 full or near full-length functional transcripts sequenced, two were novel TCRVB gene segments. They have strong sequence similarities to the known TCRBV5, and 8 subfamilies. Southern blot analysis and sequence-specific oligonucleotide hybridization confirmed: a) that these sequences are present in genomic DNA; b) their relationship to the known TCRBV families. A TCRBV sequence similar to a recently identified novel TCRBV24 subfamily was also found. We show by southern blotting that this sequence forms a single member subfamily, and by deletion analysis of T-cell lines, we have mapped this sequence to lie between the genes which encode the TCRBV8.1 and TCRBV5.3 gene segments. The results show that the anchored PCR is a powerful tool in the analysis of the TCR repertoire, which may contain more V gene segments than previously defined.|
|Appare nelle tipologie:||01.01 Articolo in Rivista|
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