Analysis of protein profile changes during cardiac differentiation of hiPSC using DIA-MS
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo Sapiens (human)
SUBMITTER: Nana Kawasaki
PROVIDER: PXD044846 | JPOST Repository | Mon Sep 25 00:00:00 BST 2023
REPOSITORIES: jPOST
Similar Datasets
Project description:gDNA was estracted and digested with cocktail of restrict enzymes MseI, DdeI, AluI, MboI, incubated at 37°C for 6 h. After purified by phenol/chloroform extraction, fragmented DNA was resuspended by TE, and quantified by Qubit 3.0 (Invitrogen). For each sample, 20 μg input DNA was immunoprecipitated overnight at 4°C in a shaker, with 1× DRIP binding buffer (10 mM NaPO4 pH 7.0, 140 mM NaCl, 0.05% Triton X-100) and 10 μg S9.6 antibody (ATCC, HB-8730). After adding 50 μl Dynabeads Protein G (Invitrogen, 10004D) and incubated for 4 h, the beads with antibody were washed by 1× DRIP binding buffer for 4 times at room temperature, each wash takes 10 min. Added 250 μl elution buffer (50 mM Tris pH 8.0, 10 mM EDTA, 0.5% SDS) and 5 U Proteinase K to beads/antibody complexes, incubated for 40 min in an Eppendorf ThermoMixer at 55°C, 1,000 rpm. Purified by phenol/chloroform extraction, and moved supernatant to a new tube, followed by adding 1/10 volume 3 M NaAc, 1 μl GlycoBlue (Invitrogen) and 1 volume isopropanol, precipitated at -20°C for 3 h and then centrifuged. After washed by 70% ethanol and dried, the DRIPed DNA pellet was resuspended by 75 μl low EDTA TE buffer (10 mM Tris-HCl 8.0, 0.1 mM EDTA). NGS libraries were constructed using Accel-NGS® 1S Plus DNA Library Kit (Swift Biosciences).
2019-10-15 | GSE134101 | GEO
Project description:Purpose: this study is to analyze the chromatin landscape of H3R2mes in Plasmodium falciparum. Methods: In this study, H3R2me2s enrichment in the chromatin of wildtype parasite at schizont stage was analyzed by Cleavage Under Targets and Tagmentation (CUT&Tag) coupled with next generation sequencing (CUT&Tag-seq). Synchronized WT 3D7 at 40–46 hpi schizonts were harvested and fixed with 1% formaldehyde for 1 min at room temperature, followed by lysis with 0.06% saponin. The parasite pellets were suspended in 100 μl nuclear extraction buffer (20 mM HEPES–KOH pH 7.9, 10 mM KCl, 0.1% Triton X-100, 20% Glycerol, 0.5 mM Spermidine, 1x EDTA-free Protease Inhibitor cocktail). Ten μl of activated Concanavalin A-coated magnetic beads (EpiCypher # 21-1401) were added to each sample (~0.5 × 106 nuclei) and incubated for 10 min. The bead-bound nuclei were resuspended in 50 μl Antibody150 buffer (20 mM HEPES, pH 7.5, 150 mM NaCl, 0.5 mM spermidine, 1× protease inhibitor cocktail, 0.01% digitonin, 2 mM EDTA) containing 0.5 μg of rabbit anti-H3R2me2s (Epigentek #A-3705-050) as the primary antibody or rabbit IgG (Cell Signaling Technology #2729S) serving as a control. The primary antibody was then removed, and nuclei were then incubated with 0.5 μg of the secondary antibodies in 50 μl of Digitonin150 buffer (Antibody150, no EDTA) at room temperature for 30 min. The secondary antibodies were mouse anti-rabbit IgG (Invitrogen #31213). The nuclei were washed thrice with 200 μl Digitonin150 Buffer for 5 min to remove unbound antibodies and finally resuspended in 50 μl Digitonin300 Buffer (Digitonin150 but with 300 mM NaCl). Then, 2.5 μl of CUTANA pAG-Tn5 (EpiCypher #15-1017) were added to each reaction at room temperature for 1 h. The nuclei were washed thrice for 5 min in 200 μl Digitonin300 Buffer to remove the unbound pA-Tn5. Next, the nuclei were resuspended in 50 μl Tagmentation buffer (10 mM MgCl2 in Digitonin300) and incubated at 37 °C for 1 h. The beads were washed with 50 µl TAPS buffer (10 mM TAPS, pH 8.5, 0.2 mM EDTA), mixed with 5 µL SDS release buffer (10 mM TAPS pH 8.5; 0.1% SDS) to quench tagmentation, and then incubated for 1 hr at 58ºC to release tagmented chromatin into solution. Finally, 15 µl of 0.67% Triton-X was added to each reaction to quench SDS. PCR with appropriate barcoded primers was performed using the CUTANA High Fidelity 2x PCR Master Mix (EpiCypher #15-1018) according to the manufacturer's recommendations. Amplified DNA libraries were captured by incubating with 1.3 × Kapa pure beads (Roche #KK8001) according to the manufacturer's recommendations, and next-generation sequencing was performed on the NextSeq 550 platform. The reads of CUT&Tag-seq from three biological replicates were mapped to the P. falciparum genome (PlasmoDB Release 39.0) by using BWA (Li and Durbin 2009) after FastQC quality control. The peak calling was finished by MACS2 version 2.2.7.1 with parameters ‘callpeak -f BAMPE’ and a q-value cutoff of 0.05. Results: The three replicates of CUT&Tag-seq using nuclei from the schizont stage showed high reproducibility, with correlation coefficients of ~0.8. Peak calling using criteria of presence in at least two of three replicates with at least 50% overlap of the peaks identified 1629 H3R2me2s signals, distributed among the 14 chromosomes. Among these peaks, 57% (927) are localized at 5’ UTR regions of 791 genes, 35% (577) at coding regions of 470 genes, and 8% (125) at 3’ UTR regions of 115 genes. The peaks are ~17.44 bp wide and ~1265 bp from the ATG sites. Comparing the transcriptome data showed genes with H3R2me2s enrichment in the 5’ UTRs showed significantly higher expression than other genes in the genome, suggesting that H3R2me2s is associated with gene activation. In addition, H3R2me2s peaks were highly co-localized with the active mark H3K9Ac, H2A.Z, and H3K4me3, further implying H3R2me2s as a euchromatin mark. Gene ontology (GO) enrichment analysis revealed a multitude of cellular pathways, including merozoite invasion, transcription, translation, stress response, cell cycle, schizogony, cell adhesion, exit from RBC, vesicle transport, signal transduction, DNA repair, and telomere organization, which are potentially regulated by this euchromatic mark. Conclusions: Collectively, H3R2me2s is a active chromatin mark and regulates invasion and other important processes in human malaria parasite.
2023-06-28 | GSE214535 | GEO
Project description:2×10^7 HL60 cells were treated with 10 uM ATRA for 2 and 5 days, and conducted Hi-C to study the chromosomal architecture. Cells were fixed by 1% formaldehyde (v/v) for 15 min at room temperature (RT) with slowly rotation. Cells were lysed by 550 μl lysis buffer (500 μl 10 mM Tris-HCl pH 8.0, 10 mM NaCl, 0.2% Igepal CA-630 and 50 μl protease inhibitors) using a homogenizer, and harvested the chromatin at 5,000 rpm and washed twice. The pellet was added 1% SDS and incubated at 65 oC for 10 min, then quenched by Triton X-100. The chromatin was digested by 600 U MboI (NEB, Ipswich, USA) at 37 oC overnight. The next day, enzymes were inactivated by 10% SDS at 65 oC for 30 min, and the restriction fragment overhangs were filled in using biotin-14-dCTP and Klenow at 37 oC for 45 min, and the ligation was conducted in 7.61 ml ligation mix (745 μl 10% Triton X-100, 745 μl 10x ligation buffer (500 mM Tris-HCl pH 7.5, 100 mM MgCl2, 100 mM DTT), 80 μl 10 mg/ml BSA, 80 μl 100 mM ATP and 5.96 ml water) for 4 h at 16°C. The blunt-end Hi-C ligation was sonicated and pull down by streptavidin beads, then purified by ethanol. Hi-C library was prepared for paired ending sequencing using NEBNext® UltraTM DNA Library Prep Kit for Illuina® (NEB). For regular 3C ligation, after enzymes inactivation, 10 μl 1 U/μl T4 DNA ligase was added to incubate at 16°C overnight. The interaction was detected by qPCR using the specific 3C primers (Table 1) followed by DNA purification. Hi-C was conducted in PE-150. An iterative method for Hi-C mapping with initial length 30bp, if it fails to map uniquely, the next round of mapping for additional 20 bp continued, this procedure lasts until the full read length reaches 150bp. The Hi-C reads were mapped to the human reference genome (assembly GRCh38) using bowtie2 (v2.2.9). The reads mapped to the same restriction fragment, the reads less than 500bp and PCR duplicates were all removed. Hi-C contact maps were normalized using ICE.
2020-05-07 | E-MTAB-8547 | biostudies-arrayexpress
Project description:Flag-YBX1 overexpressed T24 cells pellets were resuspended with 2 volume of lysis buffer (150 mM KCl, 10 mM HEPES pH 7.6, 2 mM EDTA, 0.5% NP-40, 0.5 mM DTT, 1:100 protease inhibitor cocktail, 400 U/ml RNase inhibitor), and incubated at 4 °C for 30 min with rotation. Then the lysate was centrifuged at 15 000 g for 20 min. Before incubating the lysate with Flag beads, 100ul were taken as input. The anti-Flag M2 magnetic beads (Sigma, 10 μl per mg lysate) were washed with NT2 buffer (200 mM NaCl, 50 mM HEPES pH 7.6, 2 mM EDTA, 0.05% NP-40, 0.5 mM DTT, 200 U/ml RNase inhibitor) four times. Cell lysate was mixed with M2 beads and incubated at 4 °C for 4 h with rotation. The beads were washed two times with 1 ml ice-cold NT2 buffer. Then the beads were subject to Micrococal nuclease (NEB) digestion (1:1 000 000 dilution) for 8 min at 37 °C. The beads were cooled on ice immediately for 5 min and washed two times with 1 ml ice-cold 1× PNK+EGTA buffer (50 mM Tris-HCl pH 7.5, 20 mM EDTA, 0.05% NP-40, 200 U/ml RNase inhibitor) and two times with 1 ml ice-cold 1× PK buffer (50 mM NaCl, 100 mM Tris-HCl pH 7.5, 10 mM EDTA, 0.2% SDS, 200 U/ml RNase inhibitor). Then the beads were digested with 200 μl pre-heated (20 min at 50 °C) Proteinase K and RNAs were extracted with an equal volume of Acid-Phenol: Chloroform, pH 4.5 (Ambion). The RNAs were subjected to rRNA removal and Bisseq. The libraries were sequenced on the Illumina HiSeq X-Ten platform at Novogene (Tianjin, CA) with paired-end 150 bp read length.The m5C sites were called using meRanCall from meRanTK (FDR < 0.01).
2019-07-02 | GSE133625 | GEO
Project description:The CLIP procedures were conducted using HeLa cells according to the previous study (Liu et al., 2016) with slight modifications. Briefly, 4 plates of HeLa cells in 15 cm dishes were transfected with pPB/ALKBH3 plasmid for 48 h to reach about 90% cell confluency. After washing twice with ice-cold PBS, cells were irradiated twice with 400 mJ/cm2 at 254 nm by Stratalinker on ice. Cells were lysed in high salt lysis buffer (300 mM NaCl, 0.2% NP-40, 20 mM Tris-HCl PH 7.6, 0.5 mM DTT, protease inhibitor cocktail (1 tablet/50 ml), and RNase inhibitor (1:200)) at 4°C for 30 min. Supernatant was collected after centrifuged at 17,000 g at 4°C for 15 min and further treated with 1 U RNase T1 for 15 min at 24 °C. After centrifugation and filtration through 0.22 µM filter, 10% supernatant was collected as input for further sequencing analysis. Anti-Flag M2 beads (Sigma-Aldrich, St. Louis, MO, 80 μl) were washed three times with lysis buffer and incubated with the filtered supernatant at 4°C for 4 hrs. After removing the flow through by magnetic rack, beads and input were further incubated with 10 U RNase T1 exactly for 8 min. Samples were treated with 95 µL commercial PNK buffer and 0.5 U PNK for 15 min at 37 °C. After treatments, final concentration of 100 µM ATP and 1 U PNK were added and incubated at 37 °C for another 30 min. The RNA/protein complexes were eluted by NuPAGE 1 × loading buffer and fractionated by neutral NuPAGE 4–12% bis-tris gel. After cutting the gel, RNAs were recovered by proteinase K digestion in proteinase K buffer, followed by phenol/chloroform extraction using glycogen as carrier. The RNA fragments were ligated to adapter and established library by NEB small RNA library preparation kit (E7330S).
2022-03-01 | GSE112625 | GEO
Project description:Parasite lysates were centrifuged (20,000 g, 4°C, 15 min). Beads (blank and with linker attached) were washed 3× with water then twice with lysis buffer. The lysate (~2 mg total protein) was first incubated with 2 mg blank beads for 30 min at 4°C with rotating agitation. The lysate was divided into two then incubated with either 1% DMSO or 100 µM DDD01510706 (competitor) for 30 min at 4°C with agitation. Finally, lysates were incubated with 2 mg of compound-bound beads for 1 h at 4°C with agitation. The beads were then washed 3× with wash buffer (0.8% (w/v) octyl β-D-glucopyranoside, 50 mM Tris pH 8.0, 5 mM EDTA, 1 mg/mL BSA) and 2× Tris-buffered saline (TBS; 50 mM Tris-Cl pH 7.5, 150 mM NaCl). Samples were run 1.5 cm into a Bis-Tris 10% (w/v) acrylamide gel and stained with Coomassie quick reagent for 30 min. The entire gel bands were removed and subjected to in-gel reduction with 10 mM dithiothreitol, alkylation with 50 mM iodoacetamide and digestion with 12.5 μg/mL trypsin (Pierce) for >16 h at 37°C. Recovered tryptic peptides were then vacuum dried prior to analysis
2022-10-15 | PXD033740 | Pride
Project description:Samples were subjected to sonication using Bioruptor (program mode – 30 sec on, 30 sec off, 10 cycles = 10 min). Samples were sonicated till a clear solution was obtained. After a short spin (5,000 rpm for 10 sec), the samples were heated for 10 minutes at 95°C at 300 rpm in a PCR 96 heating block. Samples were allowed to cool down and spun at 5,000 rpm for 10 sec. 1μl of chloroacetamide was added to the eluate and incubated at 37°C for 30 minutes at 500 rpm. Later the samples were spun down at 5,000 rpm for 10 sec. Proteins were subjected to endoproteinase LysC (1:100 (w/w), Wako) digestion at 37°C for 4 hrs. Later, the proteins were subjected to trypsin digestion (0.5 μg/ μl; 1:50; w/w) at 37 °C overnight. Digestion was stopped by adding 50 μl of 5% TFA (Applied Biosystems) (v/v) that lowered the pH of the solution to below pH 2.0. Subsequently, peptides were cleaned up using the Phoenix 96x (https://preomics.com) kit following the manufacture’s instructions. After drying the peptides in a SpeedVac, samples were stored at -80°C.
2020-01-13 | PXD013159 | Pride
Project description:An IP–MS method was used to screen for MbovP280-binding proteins. Briefly, BoMac cells were cultured, harvested, and lysed in RIPA buffer supplemented with cOmplete Protease Inhibitor Cocktail (Roche, Mannheim, Germany). The whole-cell lysates (400 μg) were incubated with 10 μg of either rMbovP280 or rMbovP280∆210–269 for 1 h at 4 C. Mouse antiserum (5 μg) directed against MbovP280 was added to the lysates for 12 h at 4 C, and then 50 μl of Protein A/G Agarose Beads (Beyotime) was added for an additional 1 h. The immunoprecipitates were extensively washed with NP-40 buffer and eluted with SDS loading buffer by boiling them for 5 min. The cellular proteins that coprecipitated with rMbovP280 or rMbovP280∆210–269 were resolved with SDS-PAGE and stained with silver staining.
2021-09-09 | PXD022080 | Pride
Project description:Human induced pluripotent stem cells were differentiated into NSC for 7 days. Cells on days 0, 1, 2, 3, 5 and 7 of differentiation (2.0 × 10⁶) were washed twice with DPBS (−) and then mixed with 100 μL of dissolution buffer consisting of 12 mM sodium deoxycholate, 12 mM N-lauroylsarcosine, 100 mM Tris-HCl pH 9.0, 1% O-GlcNAcase inhibitor, 1% Halt™ protease, and phosphatase inhibitor cocktail. The harvested cells were incubated at 95°C for 5 min and then sonicated to remove the viscosity. One hundred micrograms of protein was diluted to 2.5 μg/μL with dissolution buffer, and the proteins were reduced by adding 10 mM 2-mercaptoetanmol and incubating the mixture at 37℃ for 30 min, followed by another incubation with 20 mM acrylamide at 37℃ in the dark for 60 min. One microgram of mass spectrometry grade lysyl endopeptidase was added to the solution and incubated at 37℃ for 60 min. Then, 2 μg of trypsin was added to the solution and incubated at 37℃ for 6 h. Add an equal amount of ethyl acetate and 0.1% formic acid. After stirring, the supernatant was removed after centrifugation at 14,000 xg. The supernatant was desalted with an Oasis PriME HLB 1 cc Extraction Cartridge according to the manufacturer’s instructions. The protein fraction was dried using a Speed Vac concentrator, and the dried sample was reconstituted with 0.1% FA/3% ACN and analyzed by an Q-Exactive mass spectrometer coupled with a nanoLC instrument.
2022-06-27 | PXD034925 | JPOST Repository
Project description:Cells were washed with cold PBS twice and scraped from the plates, then centrifuged at 1000 rpm for 5 min to pellet cells. Washed cells were lysed with 400 L of cell lysis buffer (10 mM Tris-HCl pH7.5, 150 mM NaCl, 0.15% NP-40 and proteinase inhibitor cocktail) and incubated on ice for 10 min. The suspension was carefully add at the top of sucrose buffer (10 mM Tris-HCl pH7.5, 150 mM NaCl, 24% sucrose), and centrifuged at 3200g for 10 min to collect nuclear pellets. Pellets were resuspended in 250 L of Glycerol buffer (20 mM Tris-HCl pH7.5, 75 mM NaCl, 0.5 mM EDTA pH8.0, 50% glycerol), then then immediately add 250 μl Nuclear lysis buffer (10 mM Tris-HCl pH7.5, 300 mM NaCl, 7.5 mM MgCl2, 0.2 mM EDTA pH8.0, 1% NP-40, 1M urea). Mix by vortexing for 4 s and incubate on ice for 2 min. Centrifuge the lysate at 13,000 × g for 2 min to precipitate the chromatin–RNA complex. Briefly rinse the chromatin pellets with PBS-EDTA. RNA was extracted with Trizol reagent. RNA libraries were prepared according to manual of SMARTer smRNA-Seq Kit for Illumina (Clontech, 635031).
2019-10-15 | GSE134103 | GEO