Project description:Human CD4+ Total memory cells (CD4+CD25-CD45RA-CCR7+/-) were activated for 5d with anti-CD3/anti-CD28 antibodies. About 40*10^6 cells were then irradiated twice with 254nm UV light at 0.2J and then lysed in RIPA buffer. 1mg of cell extract was incubated on a rotating wheel ~16 h at 4°C with anti-PDAP1 antibody. PDAP1:mRNA complexes were immunoprecipitated with protein-G dynabeads 4hrs at 4°C and then treated with proteinase K. RNA was then purified using TRI-reagent and RNA zymospin columns. Three independent donors were used for this experiment. Inputs were also sequenced. Total RNA was sequenced in paired-end mode. This experiment is assessing direct targets bound by PDAP1 in human T cells.
Project description:We identified the mRNA targets of the insulin-like growth factor-2 (IGF2) mRNA-binding proteins 1, 2, and 3 (IGF2BP1/2/3) by RNA immunoprecipitation and sequencing (RIP-seq). HEK293T cells transfected with Flag-tagged IGF2BP1/2/3 plasmids were expanded and UV-crosslinked before harvest. We performed RIP of individual IGF2BP using anti-Flag antibody from nuclear extractions, and identified the associated mRNAs by next generation sequencing. More than 5000 transcripts, including protein coding and non-coding transcripts, were identified from each RIP-seq sample.
Project description:Worms expressing 3xFLAG-tagged MSTR-1 (F22D6.2) were grown to young adult stage, crosslinked with 2% formaldehyde, and RIP-seq was performed to identify binding regions on target RNAs
Project description:Assuming that functional lncRNAs form larger ribonucleoprotein complex and thus are easily crosslinked to proteins upon UV-irradiation, we performed RNA-Seq analyses of RNAs recovered from the aqueous phase after the UV-irradiation and phenol chloroform extraction (UPA-Seq)
Project description:UV-crosslinking and high througput sequencing of cDNAs (CRAC) was used to map the binding sites Hfq in enterohaemorhaggic E. coli (EHEC). Hfq was tagged with a His-FLAG dual affintiy tag and UV crosslinked after growth in the MEM-HEPES media essentailly as per Granneman et al (2009) PNAS. We additionally crosslinked Hfq in non-pathogenic E. coli K12 str. MG1655 grown in LE media. Hfq-RNA complexes were purified and trimmed using RNase A/T1. RNA fragments were isolated and converted to cDNA, PCR amplified and sequenced using Illumina Solexa GAxII and HiSeq2000 platforms. His-FLAG tagged Hfq and untagged controls were cultured to an OD of 0.8 and crosslinked with UV-C. Five replicates of tagged EHEC Hfq and 2 replicates of untagged Hfq were crosslinked. We have additionally crosslinked 2 replicates each of E. coli K12 tagged and untagged Hfq.
Project description:UV-crosslinking and high througput sequencing of cDNAs (CRAC) was used to map the binding sites Hfq in enterohaemorhaggic E. coli (EHEC). Hfq was tagged with a His-FLAG dual affintiy tag and UV crosslinked after growth in the MEM-HEPES media essentailly as per Granneman et al (2009) PNAS. We additionally crosslinked Hfq in non-pathogenic E. coli K12 str. MG1655 grown in LE media. Hfq-RNA complexes were purified and trimmed using RNase A/T1. RNA fragments were isolated and converted to cDNA, PCR amplified and sequenced using Illumina Solexa GAxII and HiSeq2000 platforms.