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. 2016 Apr 14;11(4):e0148500. doi: 10.1371/journal.pone.0148500

Table 2. List of selected proteins differentially expressed between CLL patients in a stable disease state and those transferred to anti-cancer treatments, identified by LC-HR-MS/MS.

Protein (UniProt accession) Fold change/ P value Proposed function and cellular localization Relation to cancer
ISG20- interferon stimulated exonuclease gene 20kDa (Q96AZ6) 74.6 2.0x10-3 Exhibit antiviral activity against RNA viruses (nucleus, cytoplasm) Up-regulated in cervical cancer [70]
MRPS22—mitochondrial ribosomal protein S22 (P82650) 63.8 1.4x10-4 Protein synthesis (mitochondria) Marker for epithelial breast cancer cells [71]
ACOX3- acyl-coenzyme A oxidase 3 (O15254) 54.2 5.0x10-4 Fatty acid beta-oxidation (peroxisome) A SNP is highly associated with prediction of outcome of CLL [72], and possibly with prostate cancer [73]
UBE3A- ubiquitin protein ligase E3A (Q05086) 45.5 1.1x10-3 Targeting proteins for degradation (cytoplasm) Over-expressed in breast cancer [74]. Catalyzes the ubiquitination of p53 [75]
RPl13a- 60S ribosomal protein L13a (P40429) 41.0 1.4x10-3 Associated with ribosomes but not with the canonical ribosome function, having extra-ribosomal functions (cytoplasm) Involved in cancer stem cells [76]
SLC25A1- solute carrier family 25, member 1 (P53007) 17.5 6.4x10-4 Citrate transporter (mitochondria) High expression in several tumor types [77]
GCD- glutaryl-Coenzyme A dehydrogenase (Q92947) 8.7 2.3x10-3 Involved in the degradation of L-lysine, L-hydroxylysine, and L-tryptophan (mitochondria) Overexpressed in colon cancer [78]
HP1BP3- heterochromatin protein 1, binding protein 3 (Q5SSJ5) 6.5 1.5x10-3 Maintains heterochromatin integrity during G1/S progression (nucleus) Indications for role in hypoxia-induced oncogenesis [79]
CABIN1- calcineurin binding protein1 (Q9Y6J0) 4.2 2.3x10-3 Inhibits calcineurin-mediated signal transduction (nucleus) Down-regulated in nasopharyngeal carcinoma sensitizes them to genotoxic drugs. In B-cell lymphoma, regulates the oncogene CBL6 [80]
PPP2R1A- Protein Phosphatase 2, Regulatory Subunit A, Alpha (P30153) 3.4 1.5x10-3 Regulation of cell adhesion; second-messenger-mediated signaling; mitotic nuclear envelope reassembly and more (cytoplasm) Marker for risk of breast cancer [81]
Aprt- adenine phosphoribosyl- transferase (P07741) 3.4 3.1x10-3 Involved in purine salvage pathway resulting in the formation of AMP (cytoplasm) Sensitizes cells to treatment with E. coli purine nucleoside phosphorylase [82]
CTSS- cathepsin S (P25774) 3.0 2.5x10-3 Protease in MHC-II- mediated antigen presentation (lysosome) Overexpressed in glioblastoma [83] Prognosis and predictor marker of chemotherapy benefit in adjuvant colorectal cancer [84]
PSMC5- proteasome (prosome, macropain) 26S subunit, ATPase 5 (also known as S8; p45; SUG1; TBP10; TRIP1) (P62195) 2.7 2.9x10-3 ATP-dependent degradation of ubiquitinated proteins (cytoplasm) Its gene amplified during progression of cutaneous malignant melanoma [85]
Nop56- Nuclear protein 56 (O00567) 2.5 3.0x10-3 Involved in the 60S ribosomal subunit biogenesis (nucleus) Necessary for Myc-induced cell transformation [86]
Enpp4- ectonucleotide pyrop-hosphatase/phosphodiesterase 4 (Q9Y6X5) -51.8 4.4x10-3 Hydrolyze phosphodiester bonds, act as a procoagulant (cell membrane) High expression in the in vivo metastatic osteosarcoma cells [87]
DHRS4- dehydrogenase /reductase (SDR family) member 4 (Q9BTZ2) 84.5 3.0x10-3 Reduces all-trans-retinal and 9-cis retinal (peroxisome) No direct association reported
TBL2- transducin (beta)-like 2 (Q9Y4P3) 10.3 2.9x10-3 Associate with triglyceride metabolism (ER) No direct association reported
RPE- ribulose-5-phosphate-3-epimerase (Q96AT9) 8.0 1.3x10-3 Pentose phosphate pathway (cytoplasm) No direct association reported
Snx18- sorting nexin 18 (Q96RF0) 3.6 8.9x10-4 Endocytosis and vesicle trafficking during interphase and at the end of mitosis (cell membrane) No direct association reported