Abstract:
:To identify the existence of antigen specific T cell responses and to follow the changes of these reactions, it is considered useful to evaluate whether certain T cells clonally accumulate in the lymphocyte population. For this purpose, we have established a novel method to analyze T cell clonality using a combination of reverse transcriptase-polymerase chain reaction of T cell receptor beta chain transcripts and single-strand conformation polymorphism (SSCP). Using this method, we obtained a smear-like pattern of electrophoresed DNA from the heterogeneous T cell population. On the other hand, a single T cell clone exhibits a band in the appropriate VP amplification and an accumulated T cell clone in a heterogeneous lymphocyte population is identified as a band in the background smear pattern. If a lymphocyte population was stimulated by an antigen either in vitro or in vivo, several distinct bands were found to be generated in the background smear. Thus, the dynamic changes of T cell clonal responses could be monitored with this method. Analyses of several immunological disorders, including autoimmune diseases, malignant disorders, and transplantations, revealed the involvement of antigen-specific T cell immune responses in these disorders. Furthermore, taking advantage of the reproducible mobility of a band of SSCP gel, we are now able to compare identities of the accumulated T cell clones in different samples without the need for nucleotide sequencing of each clone. Such information can thus elucidate the occurrence of uniform or stable immunological reactions in the host and also suggests that these reactions play an important role in vivo. Therefore, taken together, the above described novel T cell clonality analysis is considered to be useful in studying the T cell immune responses in various fields of immunology.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Yamamoto K,Masuko-Hongo K,Tanaka A,Kurokawa M,Hoeger T,Nishioka K,Kato Tdoi
10.1016/0198-8859(96)00080-8subject
Has Abstractpub_date
1996-06-01 00:00:00pages
23-31issue
1-2eissn
0198-8859issn
1879-1166pii
0198-8859(96)00080-8journal_volume
48pub_type
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