Identification of new alternative splice events in the TCIRG1 gene in different human tissues.

TitleIdentification of new alternative splice events in the TCIRG1 gene in different human tissues.
Publication TypeJournal Article
Year of Publication2005
AuthorsSmirnova AS, Morgun A, Shulzhenko N, Silva IDCG, Gerbase-DeLima M
JournalBiochemical and biophysical research communications
Volume330
Issue3
Pagination943-9
Date Published2005 May 13
ISSN0006-291X
KeywordsAlternative Splicing, Cytoplasm, Humans, Leukocytes, Molecular Sequence Data, Open Reading Frames, Protein Isoforms, Protein Subunits, Reproducibility of Results, RNA, Vacuolar Proton-Translocating ATPases
Abstract

Two transcript variants (TV) of the T cell immune regulator gene 1 (TCIRG1) have already been characterized. TV1 encodes a subunit of the osteoclast vacuolar proton pump and TV2 encodes a T cell inhibitory receptor. Based on the search in dbEST, we validated by RT-PCR six new alternative splice events in TCIRG1 in most of the 28 human tissues studied. In addition, we observed that transcripts using the TV1 transcription start site and two splice forms previously described in a patient with infantile malignant osteopetrosis are also expressed in various tissues of healthy individuals. Studies of these nine splice forms in cytoplasmic RNA of peripheral blood mononuclear cells showed that at least six of them could be efficiently exported from the nucleus. Since various products with nearly ubiquitous tissue distribution are generated from TCIRG1, this gene may be involved in other processes besides immune response and bone resorption.

DOI10.1016/j.bbrc.2005.03.065
Alternate JournalBiochem. Biophys. Res. Commun.