Ranscription units (Han et al., 2004; Lewinski et al., 2005). In the present work, we extended this knowledge by a detailed analysis of how TI impacts viral transcription in latent cells. Although TI occurs regardless of the orientation of the two promoters, we studied TI phenomenon in two J-Lat cell lines with the same orientation of the host and viral promoters, which allowed us to detect and an
Tiful in genes and they are recognized by the spliceosome when there is no stronger splice site downstream of them, such aberrant splicing probably takes place in many cases of integration of the viral genome. On one hand, these transcripts reflected active transcription upstream of the provirus in both J-Lat cell lines. On the other hand, LTR sequence in the transcripts enabled us to use them as
For assistance with writing the manuscript, and members of Peterlin laboratory for helpful discussions and continuous support. This work was supported by grants from the National Institutes of Health to B.M.P. (AI49104 and AI058708). T.L. was supported in part by a grant from the National Institutes of Health, University of California San Francisco ladstone Institute of Virology Immunology Cente
Ns dormant. In contrast, we demonstrated that TI could be counteracted by specific inhibition of the upstream transcription or by cooperative activation of transcription initiation and elongation from the 5'LTR by the viral and host TFs. In the latter scenario, we envision that RNAPII initiating from the viral promoter competes successfully with the RNAPII that is elongating through the 5'LTR. Bec
Ns dormant. In contrast, we demonstrated that TI could be counteracted by specific inhibition of the upstream transcription or by cooperative activation of transcription initiation and elongation from the 5'LTR by the viral and host TFs. In the latter scenario, we envision that RNAPII initiating from the viral promoter competes successfully with the RNAPII that is elongating through the 5'LTR. Bec
Me transcription through the provirus, since slight enrichment of elongating RNAPII in the HIV coding region of transcriptionally silent J-Lat 9.2 cells was observed using ChIPqPCR assay. However, transcription originating from the host promoter, ignoring pA sites in both LTRs and consequently splicing out the provirus together with the host intron (Han et al., 2004) is most likely less frequent t
Me transcription through the provirus, since slight enrichment of elongating RNAPII in the HIV coding region of transcriptionally silent J-Lat 9.2 cells was observed using ChIPqPCR assay. However, transcription originating from the host promoter, ignoring pA sites in both LTRs and consequently splicing out the provirus together with the host intron (Han et al., 2004) is most likely less frequent t
Me transcription through the provirus, since slight enrichment of elongating RNAPII in the HIV coding region of transcriptionally silent J-Lat 9.2 cells was observed using ChIPqPCR assay. However, transcription originating from the host promoter, ignoring pA sites in both LTRs and consequently splicing out the provirus together with the host intron (Han et al., 2004) is most likely less frequent t