Abstract:
:DOCK10 is a member of the dedicator of cytokinesis (DOCK) family of Rho GTPase activators preferentially expressed in lymphocytes. In this paper, we analyzed DOCK10 mRNA diversity produced because of alternative splicing. Alternative first coding exon usage led to 2 main protein-coding transcripts, DOCK10.1 and DOCK10.2. Full-length cDNA clones of both isoforms were obtained from both normal human peripheral blood mononuclear cells and mouse spleen for the first time for human DOCK10.1, mouse DOCK10.1, and mouse DOCK10.2. Human and mouse DOCK10.1 clones corresponded to the protein coding assemblies provided by the National Center for Biotechnology Information as Reference Sequences for DOCK10. Our analysis especially focused on human cDNA clones, of which 63% were alternatively spliced forms involving diverse exons and introns. DOCK10.1 expression was enriched in normal T cells, and DOCK10.2 expression was enriched in normal B cells and chronic lymphocytic leukemia (CLL) B cells. Both isoforms were upregulated in response to interleukin-4 in B cells, both normal and CLL, but not in T cells. Our data suggest that cell-specific mechanisms regulate expression of the alternative first exon variants of DOCK10 in vertebrates.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Alcaraz-García MJ,Ruiz-Lafuente N,Sebastián-Ruiz S,Majado MJ,González-García C,Bernardo MV,Alvarez-López MR,Parrado Adoi
10.1016/j.humimm.2011.03.024subject
Has Abstractpub_date
2011-07-01 00:00:00pages
531-7issue
7eissn
0198-8859issn
1879-1166pii
S0198-8859(11)00077-2journal_volume
72pub_type
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