Table I. Comparison of protein abundance changes determined by iTRAQ labeling of nuclear fractions from IL-4-treated anti-CD3/CD28-activated CD4+ cells versus anti-CD3/CD28-activated CD4+ cells at 6 and 24 h with LC-MS/MS analysis.
The iTRAQ ratios (Th2/Th0) are relative to the protein abundance of the activated cells (without IL-4) at the equivalent time points. The values are, unless otherwise stated, based on the weighted average from three biological replicates. These values were estimated using a random effect model. The inclusion criteria for these proteins are based on an absolutes Z score greater than 1.96 (p < 0.05), an abundance change greater than 20% (up or down), detection of the proteins in all three iTRAQ experiments, two or more associated peptides, and five or more iTRAQ ratios. Some exceptions are marked. The p values were calculated from the normal distribution of the absolute value of the Z score. PQ seq., number of unique peptides detected by ProQuant; Tot. calcs., total number of calculations used; Cov., coverage; NA, not applicable.
Accession | Name | GO location | iTRAQ 6-h ratio | +/− | 6-h p value | 6-h FDR | iTRAQ 24-h ratio | +/− | 24-h p value | FDR | PQ seq. | Tot. calcs. | Cov. |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
% | |||||||||||||
Th2 association | |||||||||||||
STAT6_HUMAN (P42226) | Signal transducer and activator of transcription 6 | Nucleus, cytoplasm | 1.32 | 0.12 | 0.001 | 0.02 | 1.07 | 0.15 | 0.60 | 0.86 | 3 | 10 | 5 |
SATB1_HUMAN (Q01826) | DNA-binding protein SATB1 | Nucleus | 1.12 | 0.03 | 3·e−05 | 9·e−04 | 1.24 | 0.08 | 0.001 | 0.018 | 11 | 47 | 14 |
IKZF1_HUMANa (Q13422) | DNA-binding protein Ikaros | Intracellular, nucleus | 1.04 | 0.03 | 0.15 | 0.56 | 1.21 | 0.11 | 0.046 | 0.25 | 5 | 31 | 18 |
Interferon-related | |||||||||||||
TRI22_HUMAN (Q8IYM9) | Tripartite motif-containing protein 22 | Intracellular, nucleus | 0.82 | 0.08 | 0.055 | 0.32 | 0.81 | 0.07 | 0.018 | 0.143 | 3 | 9 | 9 |
STAT1_HUMANb (P42224) | Signal transducer and activator of transcription 1-α/β | Cytoplasm, nucleus | 0.95 | 0.06 | 0.39 | 0.81 | 0.81 | 0.12 | 0.16 | 0.51 | 8 | 19 | 5 |
IF16_HUMANa,b (Q16666) | g-Interferon-inducible protein IFI16 | Nucleus, cellular component | 0.99 | 0.02 | 0.75 | 0.95 | 0.85 | 0.04 | 0.001 | 0.012 | 22 | 142 | 39 |
TBX21_HUMANc (Q9UL17) | T box transcription factor TBX21 | Nucleus | 0.98 | 0.09 | 0.83 | NA | 0.64 | 0.11 | 0.01 | NA | 2 | 5 | 4 |
TCF7_HUMANd (P36402) | Transcription factor 7 (T cell-specific transcription factor 1) | Cytoplasm, membrane, nucleus | 0.95 | 0.04 | 0.17 | 0.60 | 0.75 | 0.03 | 2·e−08 | 2·e−6 | 2 | 13 | 8 |
Other | |||||||||||||
YBOX1_HUMAN (P67809) | Nuclease-sensitive element-binding protein 1 (Y box-binding protein 1) | Nucleus | 1.23 | 0.10 | 0.11 | 0.50 | 1.65 | 0.30 | 0.006 | 0.069 | 4 | 18 | 30 |
G10_HUMANa (P41223) | Protein BUD31 homolog (protein G10 homolog) (EDG-2) | Nucleus | 0.97 | 0.05 | 0.68 | 0.92 | 1.24 | 0.05 | 7·e−08 | 5·e−06 | 3 | 10 | 26 |
AKAP8_HUMAN (O43823) | Protein kinase A anchor protein 8 | Intracellular, membrane, nucleus, chromosome | 1.10 | 0.06 | 0.26 | 0.70 | 1.24 | 0.13 | 0.045 | 0.25 | 3 | 9 | 6 |
RPB1_HUMANa (P24928) | DNA-directed RNA polymerase II largest subunit | Nucleus, cellular component | 1.45 | 0.17 | 0.046 | 0.29 | 0.86 | 0.33 | 0.70 | 0.90 | 2 | 5 | 3 |
TAF10_HUMAN (Q12962) | Transcription initiation factor TFIID subunit 10 | Nucleus, cytoplasm, cellular component | 1.59 | 0.14 | 0.002 | 0.03 | 0.90 | 0.06 | 0.095 | 0.42 | 2 | 14 | 2 |
RL5_HUMANa (P46777) | 60 S ribosomal protein L5 | Intracellular, nucleus | 1.36 | 0.13 | 0.042 | 0.27 | 1.66 | 0.35 | 0.016 | 0.13 | 6 | 23 | 27 |
RFC1_HUMANa (P35251) | Replication factor C subunit 1 | Nucleus, chromosome | 1.01 | 0.03 | 0.75 | 0.94 | 1.24 | 0.13 | 0.038 | 0.23 | 7 | 17 | 10 |
MP2K3_HUMANe (P46734) | Dual specificity mitogen-activated protein kinase kinase 3 | 1.82 | 0.08 | 1·e−15 | 0.00 | 0.92 | 0.04 | 0.086 | 0.38 | 1 | 11 | 9 | |
CD3E_HUMANa (P07766) | T cell surface glycoprotein CD3 ϵ chain precursor | Cell surface, membrane | 1.25 | 0.10 | 0.004 | 0.05 | 1.16 | 0.07 | 0.016 | 0.132 | 2 | 10 | 14 |
CD5_HUMAN (P06127) | T cell surface glycoprotein CD5 precursor | Cell surface, membrane | 0.90 | 0.07 | 0.142 | 0.55 | 0.73 | 0.07 | 0.001 | 0.015 | 3 | 9 | 15 |
CD45_HUMANa (P08575) | Leukocyte common antigen precursor | Membrane | 0.99 | 0.05 | 0.864 | 0.97 | 0.80 | 0.09 | 0.043 | 0.244 | 6 | 33 | 6 |
CD44_HUMAN (P16070) | CD44 antigen precursor | Cell surface, membrane | 0.91 | 0.04 | 0.032 | 0.23 | 0.77 | 0.09 | 0.027 | 0.191 | 6 | 46 | 10 |
GLU2B_HUMANa (P14314) | Glucosidase 2 subunit β precursor | Membrane | 1.23 | 0.04 | 1·e−08 | 0.00 | 1.07 | 0.02 | 2·e−05 | 0.001 | 3 | 8 | 6 |
PSB8_HUMAN (P28062) | Proteasome subunit β type 8 precursor | Intracellular | 1.03 | 0.06 | 0.670 | 0.92 | 0.83 | 0.03 | 2·e−06 | 7·e−05 | 1 | 8 | |
PSME3_HUMAN (P61289) | Proteasome activator complex subunit 3 | Intracellular | 0.93 | 0.07 | 0.341 | 0.79 | 0.73 | 0.05 | 6·e−07 | 3·e−05 | 4 | 10 | 19 |
GNAS_HUMAN (P63092) | Guanine nucleotide-binding protein Gs subunit α isoforms, short | Intracellular | 0.72 | 0.08 | 0.004 | 0.05 | 1.14 | 0.39 | 0.688 | 0.900 | 2 | 10 | 14 |
ATP5J_HUMAN (P18859) | ATP synthase coupling factor 6, mitochondrial precursor | Cytoplasm | 1.23 | 0.12 | 0.032 | 0.23 | 0.74 | 0.15 | 0.126 | 0.464 | 2 | 12 | 22 |
GRAP2_HUMAN (O75791) | GRB2-related adapter protein 2 | Cytoplasm | 1.00 | 0.01 | 0.816 | 0.96 | 1.27 | 0.08 | 6·e−05 | 0.002 | 6 | 18 | 12 |
APT_HUMANa (P07741) | Adenine phosphoribosyl- transferase | Cytoplasm | 0.99 | 0.02 | 0.723 | 0.93 | 0.83 | 0.08 | 0.045 | 0.243 | 4 | 24 | 25 |
HS105_HUMANa (Q92598) | Heat-shock protein, 105 kDa | Cytoplasm | 1.24 | 0.07 | 4·e−04 | 0.01 | 1.09 | 0.12 | 0.436 | 0.755 | 4 | 12 | 6 |
TXLNA_HUMANa (P40222) | α-Taxilin | Cytoplasm, extracellular region | 1.38 | 0.14 | 0.001 | 0.02 | 1.01 | 0.07 | 0.848 | 0.967 | 3 | 9 | 13 |
S10A9_HUMANa (P06702) | Protein S100-A9 (S100 calcium-binding protein A9) | Extracellular space | 1.27 | 0.09 | 4·e−04 | 0.01 | 1.82 | 1.09 | 0.289 | 0.653 | 4 | 7 | 31 |