28-days hindlimb unloading model mouse hippocampal synaptic proteomics
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus Musculus
SUBMITTER: 
Jiaqi Hao
PROVIDER: PXD061253 | iProX | Thu Feb 27 00:00:00 GMT 2025
REPOSITORIES: iProX
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Project description:The experiment consists of M.hyp 232 cultures digests analyzed on two mass specs, LTQ Velos Pro and LTQ FT Ultra LTQ Velos Pro: Six cell culture replicates of M.hyo 232 were hydrophobically separated using tree detergents: Digitonin, Tween, and SDS. Each francion, including the insoluble pellet, was trypsin digested and then cleaned using an SCX trap follwed by a RP trap to remove detergents. Each fraction was sepated using a Dionex U3000 splitless nanoflow system operating at 333 nl per minute using a gradient of 2% ACN to 50% ACN in 4 hours. Eluate was analyzed using an LTQ Velos Pro mass spectrometer with 20 MS/MS scans of the 20 most intense peaks from each MS scan. Dynamic exclusion was enable for 3 minutes for each m/z with a repeat count of 1. LTQ FT Ultra: Two cell pellets for high resolution analysis were lysed and trypsin digested. Digested peptides were dried, resuspended in 20 mM KH2PO4, 20% ACN, pH 3 (Buffer A) in 2.5 µL and transferred to low retention vials in preparation for separation using an Ultimate 3000 configured for 2D-LC. Each sample was loaded at 15 µl/min onto an SCX microtrap for the first dimension of separation, involving SCX steps of Buffer A + 0, 5, 10, 15, 20, 25, 30, 40, 50, 100, 250, 500, and 1000 mM KCl. For the second dimension of separation, each eluted salt step was desalted with an inline peptide microtrap with 2% ACN, 0.1% FA at 5 µl/min. Once desalted, the microtrap was switched into line with a fritless nano column (75µm x ~10cm) containing C18 media (5µ, 200 Å Magic, Michrom). Peptides were eluted using a gradient of 2% to 36% ACN, 0.1% FA at 350 nl/min over 60 min and electrospray ionized for analysis using an LTQ FT Ultra mass spectrometer. A survey scan m/z 350-1750 was acquired in the FT ICR cell (Resolution = 100,000 at m/z 400, with an accumulation target value of 1,000,000 ions). Up to the 6 most abundant ions (>3,000 counts) with charge states > +2 were sequentially isolated and fragmented within the linear ion trap using collisionally induced dissociation with an activation q = 0.25 and activation time of 30 ms at a target value of 30,000 ions. M/z ratios selected for MS/ MS were dynamically excluded for 30 seconds. Analysis: X!tandem searches were performed using the Mycoplasma hyopneumoniae strain 232 reference protein set from NCBI. The only difference between the searches for the LTQ Velos and LTQ FT was the precursor mass tolenance being set to +-1500ppm and +-24ppm respectively. Decoy searches were performed and the data filtered at e-value <= 0.01 with single peptide proteins discarded. These results are included in the submission as two tab-delimited text files.
2018-01-10 | PXD000118 | Pride
Project description:Serum samples were inactivated and sterilized at 56 ℃ for 30 min and processed as previous study with some modifications (Shen et al., 2020). Briefly, 4 μL serum from each sample was depleted using High Select Top-14 Abundant Protein Depletion MiniSpin Columns (Thermo Fisher Scientific, San Jose, USA). Then the elutes were denatured, reduced and alkylated to derive protein lysates. The solutions were diluted with 200 μL 100 mM triethylammonium bicarbonate (TEAB) followed by a double-step trypsinization (enzyme-to-substrate ratio kept at 1:40 in each step). 10% trifluoroacetic acid (TFA) was added to each sample to quench the enzymatic reaction. Digested peptides were cleaned-up with SOLAμ (Thermo Fisher Scientific, San Jose, USA) according to the manufacturer’s instructions and labeled by TMTpro 16 plex reagents (Thermo Fisher Scientific, San Jose, USA). 660 samples in total (633 serum samples and 27 technical replicates) were divided into 44 batches for labelling experiment, each batch containing fifteen samples and one pool. The labeled samples in each batch were combined and fractionated. Each sample was separated into 30 fractions and then consolidated into 10 fractions. Dried and re-dissolved fractions with 2% acetonitrile (ACN)/0.1% formic acid (FA) of MS grade. The re-dissolved peptides were analyzed with a U3000 HPLC system coupled to a Orbitrap Exploris 480 (Thermo Fisher Scientific, Bremen, Germany) in data-dependent acquisition (DDA) mode combined to a front-end high-field asymmetric waveform ion mobility spectrometry (FAIMS). Peptides of each fraction were loaded onto a pre-column (3 μm, 100 Å, 20 mm*75 mm i.d.) and separated with a 75 min LC gradient at a flow rate of 300 nL/min (analytical column: 1.9 mm, 120 Å, 150 mm*75 mm i.d.; Buffer A: 2% ACN, 98% H2O containing 0.1% FA; Buffer B: 98% ACN, 2% H2O containing 0.1% FA). FAIMS was operated at two different CV, -48 V and -68 V, respectively. For MS acquisition, RF level was set at 50% and ion transfer tube temperature at 320 °C. The turbo-TMT mode was enabled. Scan range of MS1 was 350–1800 m/z. Resolutions were set to 60000 for MS1 and 30000 for MS2. Normalized AGC target was set at 300% for MS1 and 200% for MS2. The maximum injection time was set as 50 ms for MS1 and 86 ms for MS2. Dynamic exclusion was on and mass tolerance was set to ±10 ppm. Intensity threshold was set at 20000 for MS1, and HCD collision energy was fixed to 38%. MS/MS data was recorded in centroid mode. Isolation window was set to 0.7 m/z.
2022-10-06 | PXD037204 |
Project description:2-cell (E1.5) stage embryos were cultured in normal KSOM+AA conditions until E3.5 +2h and thereafter 100 embryos each were moved to control or p38-MAPKi conditions and cultured for another 7 hours (E3.5 +9h). The embryos were then washed through pre-warmed (37˚C) Hank’s balanced salt solution (HBSS, Sigma-Aldrich; Cat. No. H9269) and lysed by moving to a 1.5ml centrifuge tube containing about 15µl of SDT-lysis buffer (4% (w/v) SDS, 100 mM Tris-HCl pH 7.6, 0.1 M DTT). Cell lysis was performed by incubating the tubes in a 95˚C thermoblock for 12 minutes, brief centrifugation at 750 rpm, cooling to room temperature and storage at -80˚C. Individual protein solutions were processed by filter-aided sample preparation (FASP) method with some modifications (see the associated publication for more details). Resulting peptides were cleaned by liquid-liquid extraction (3 iterations) using water saturated ethyl acetate. 1/10th of the FASP eluate was taken out for direct LC-MS measurements, evaporated completely in SpeedVac concentrator (Thermo Fisher Scientific). Peptides were further transferred into LC-MS vials using 50μL of 2.5% formic acid (FA) in 50% acetonitrile (ACN) and 100μL of pure ACN and with addition of polyethylene glycol (final concentration 0.001%) and concentrated in a SpeedVac concentrator. Phosphopeptides were enriched from the remaining 9/10th of the cleaned FASP eluate after complete solvent evaporation (SpeedVac concentrator) using High-Select™ TiO2 Phosphopeptide Enrichment Kit (Thermo Fisher Scientific) according to manufacturer protocol. Phosphopeptide standards (0.1 pmol of MS PhosphoMix 1, 2, 3 Light; Sigma-Aldrich, St. Louis, Missouri, USA) was added to suspended sample in binding/equilibration buffer. Flow-through fraction was dried and used for second enrichment step using High-Select™ Fe-NTA Phosphopeptide Enrichment Kit (Thermo Fisher Scientific, Waltham, Massachusetts, USA) according to manufacturer protocol. Resulting phosphopeptides were extracted into LC-MS vials by 2.5% FA in 50% ACN and 100% ACN with addition of polyethylene glycol (final concentration 0.001%) and concentrated in a SpeedVac concentrator). LC-MS/MS analyses of all peptide mixtures (2 peptide solutions for each sample – 1) not enriched; 2) enriched on phosphopeptides using TiO2 enrichment kit) were done using RSLCnano system connected to Orbitrap Fusion Lumos mass spectrometer (Thermo Fisher Scientific). Prior to LC separation, tryptic digests were online concentrated and desalted using trapping column (100 μm × 30 mm, column compartment temperature of 40˚C) filled with 3.5-μm X-Bridge BEH 130 C18 sorbent (Waters). After washing of trapping column with 0.1% FA, the peptides were eluted (flow rate - 300nl/min) from the trapping column onto an analytical column (Acclaim Pepmap100 C18, 3 µm particles, 75 μm × 500 mm; column compartment temperature of 40˚C, Thermo Fisher Scientific) by using 50 or 100 minutes long nonlinear gradient program (1-56% of mobile phase B; mobile phase A: 0.1% FA in water; mobile phase B: 0.1% FA in 80% ACN) for analysis of phosphopeptide enriched fractions or not enriched peptide mixtures, respectively. Equilibration of the trapping column and the analytical column was done prior to sample injection to sample loop. The analytical column outlet was directly connected to the Digital PicoView 550 (New Objective) ion source with sheath gas option and SilicaTip emitter (New Objective; FS360-20-15-N-20-C12) utilization. ABIRD (ESI Source Solutions) was installed. MS data were acquired in a data-dependent strategy with cycle time for 3 seconds and with survey scan (350-2000 m/z). The resolution of the survey scan was 60000 (200 m/z) with a target value of 4×105 ions and maximum injection time of 50ms. HCD MS/MS (30% relative fragmentation energy, normal mass range) spectra were acquired with a target value of 5.0x104. The MS/MS spectra were recorded in Orbitrap at resolving power of 30,000 or 15,000 (200 m/z) and the maximum injection time for MS/MS was 500 or 22 ms for analysis of phosphopeptides enriched fraction or non-enriched peptide mixture, respectively. Dynamic exclusion was enabled for 60 seconds after one MS/MS spectra acquisition. The isolation window for MS/MS fragmentation was set to 1.6 m/z.
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Project description:This array analysis is to study developmental time course of the regulation of target messages’ expression during culture of murine neutrophils versus miR-223 null neutrophils. Culture media was SILAC-IMDM for MS analysis.
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2018-07-16 | GSE94832 | GEO
Project description:E. coli proteins (300 ng) extracted from the sample were analyzed using an Orbitrap Fusion Lumos mass spectrometer (Thermo Fisher Scientific) coupled with an Ultimate 3000 (Thermo Fisher Scientific) reversed-phase liquid chromatography (RPLC) separation system with a C2 column (60 cm length, CoAnn Inc.). In the RPLC system, phase A was water with 0.1% formic acid (FA), and phase B was 60% acetonitrile (ACN) and 15% isopropanol (IPA) with 0.1% FA. A 98-min gradient of mobile phase B (0-5 min 5%, 5-7 min for 5% to 35%, 7-10 min for 35% to 50%, 10-97 min for 50% to 80%, 97-98 min from 80% to 99%) was applied with a flow rate of 400 nL/min.
E. coli proteins were analyzed using both DDA and DIA modes. In each mode, six runs were performed separately, with each targeting a specific m/z range within the MS1 scan: 720-800, 800-880, 880-960, 960-1040, 1040-1120, and 1120-1200 m/z. MS1 spectra were collected with a resolution of 240,000 (at 200 m/z), 4 microscans, an automatic gain control (AGC) target value of 1x106, and a maximum injection time of 200 ms. MS/MS spectra were obtained with a scan range of 400-2000 m/z, a resolution of 60,000 (at 200 m/z), 1 microscan, an AGC target value of 1x106, and a maximum injection time of 500 ms. Fragmentation was performed using higher-energy collisional dissociation (HCD) with 30% NCE. In the DDA runs, the top six precursor ions from each MS1 scan were isolated with a 3 m/z window for MS/MS analysis. The dynamic exclusion was set to 60 seconds. In the DIA runs, a 4 m/z isolation window was used, resulting in a total of 20 MS/MS spectra for each cycle. Three technical replicates were obtained for each experiment.
2024-03-19 | MSV000094362 | MassIVE
Project description:E. coli proteins (300 ng) extracted from the sample were analyzed using an Orbitrap Fusion Lumos mass spectrometer (Thermo Fisher Scientific) coupled with an Ultimate 3000 (Thermo Fisher Scientific) reversed-phase liquid chromatography (RPLC) separation system with a C2 column (60 cm length, CoAnn Inc.). In the RPLC system, phase A was water with 0.1% formic acid (FA), and phase B was 60% acetonitrile (ACN) and 15% isopropanol (IPA) with 0.1% FA. A 98-min gradient of mobile phase B (0-5 min 5%, 5-7 min for 5% to 35%, 7-10 min for 35% to 50%, 10-97 min for 50% to 80%, 97-98 min from 80% to 99%) was applied with a flow rate of 400 nL/min.
E. coli proteins were analyzed using both DDA and DIA modes. In each mode, six runs were performed separately, with each targeting a specific m/z range within the MS1 scan: 720-800, 800-880, 880-960, 960-1040, 1040-1120, and 1120-1200 m/z. MS1 spectra were collected with a resolution of 240,000 (at 200 m/z), 4 microscans, an automatic gain control (AGC) target value of 1x106, and a maximum injection time of 200 ms. MS/MS spectra were obtained with a scan range of 400-2000 m/z, a resolution of 60,000 (at 200 m/z), 1 microscan, an AGC target value of 1x106, and a maximum injection time of 500 ms. Fragmentation was performed using higher-energy collisional dissociation (HCD) with 30% NCE. In the DDA runs, the top six precursor ions from each MS1 scan were isolated with a 3 m/z window for MS/MS analysis. The dynamic exclusion was set to 60 seconds. In the DIA runs, a 4 m/z isolation window was used, resulting in a total of 20 MS/MS spectra for each cycle. Three technical replicates were obtained for each experiment.
2024-03-26 | MSV000094407 | MassIVE
Project description:Using various exposure conditions, we studied the induction of DNA-protein crosslinks (DPX) by formaldehyde (FA) and their removal in primary human nasal epithelial cells (HNEC). DPX were indirectly measured by the alkaline comet assay as the reduction of gamma ray – induced DNA migration. DPX are the most relevant primary DNA alterations induced by FA and the comet assay is a very sensitive method for the detection of FA-induced DPX. In parallel experiments, we investigated changes in gene expression by using a full genome human microarray. After a single treatment with FA (50 to 200 µM), concentration – and time-dependent changes in gene expression were seen under conditions that also induced genotoxicity. Repeated treatments with low FA concentrations (20 and 50 µM) did not lead to a significant induction of DPX but repeated treatments with 50 µM FA changed the expression of more than 100 genes. Interestingly, the expression of genes involved in the main pathway for FA detoxification and the repair of DPX were not specifically enhanced. A high degree of overlap was seen among the pattern of gene changes induced by FA in HNEC in comparison to recently published array studies for nasal epithelial cells from rats exposed to FA in vivo. Our results suggest that HNEC are a suited in vitro model for the characterization of FA-induced toxicity and the relationship between genotoxic and other cytotoxic effects.
2010-08-03 | GSE21477 | GEO
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Project description:fapesp-bra-inra-10-01_bioen_hypocotyl - dark hypocotyls tor rnai - Transcriptional comparison between 2 TOR RNAi mutants versus GUS control. - Sowing after 24h imbibition at 4°C in the dark, on MS1/5, no sucrose, 10 mM ethanol, 8 g/l agar, vertical growth with 3h light, 6 days growth in the dark (20°C), hypocotyls were harvested under green light ; cotyledons and root were removed.
2012-10-10 | GSE41404 | GEO