The majority of these fusion transcripts (140/185, 76 %) are derived from genes that are located next to each other in the genome, otherwise referred to as "read-through transcripts" [ 13], or transcription induced chimeras [ 23, 24] (Additional file 1).
Each of the three novel RBM6-RBM5 transcription-induced chimeras falls within this category, and is, therefore, not a rare form of "chimerism".
It is therefore hypothesized that the three novel RBM6-RBM5 transcription-induced chimerareare functional non-coding RNAs, whose role is not one of RBM6 and/or RBM5 transcription regulation.
The larger increase in RBM6 expression levels was associated with the expression of three novel RBM6-RBM5 transcription-induced chimeach, each lacking exons 3, 6, 20, and 21 of RBM6 and exon 1 of RBM5, but differing in the presence or absence of exon 4, exon 5 and a 17 nt sequence from intron 10 of RBM6.
We found that the DNA-like peptide chimera induced a dose-dependent decrease in the number of IgG anti-dsDNA antibody producing cells when PBMCs of lupus patients were cultured in its presence.
In the absence of heparin, the chimera induced dose-dependent EC and SMC proliferation at 0.06 nmol or more compared with the wild-type FGF-1, which stimulated minimal DNA synthesis at 6.0-nmol concentrations.
Analysis of thymocytes from transgenic mice expressing this chimeric receptor showed that intracytoplasmic crosslinking of the chimera induced tyrosine phosphorylation of the protein, as well as a slow and very weak calcium mobilization response.
Finally, we noted that withdrawal of 4-hydroxy-tamoxifen to switch off the MLL-ENL-ER chimera induced expression of ly6g and itgam in control and in Ras cells, but was unable to do so in Ras/p53DD cells (Figure 7D), arguing that p53 is essential for granulocytic and monocytic differentiation, at least in the context of oncogenic Ras.
Despite their high level of attenuation in monkeys, the chimeras induced a moderate-to-high titer of neutralizing antibodies and prevented viremia in monkeys challenged with WN.
Single activation of C123 and C123 produced receptor kinetics similar to murine receptors, whereas repeated activation of these chimeras induced strong rundown kinetics.
