Dataset Information

Human bladder cancer and colon cancer quatitative MS/MS

ABSTRACT: We analyzed a set of 40 independently collected tumor tissue/control samples using a label-free quantitation single pass LC-MS/MS approach. In this set, 10 samples originated from a colon tumor (i.e. AC) and 10 from control non-malignant tissue samples (NCA), as well as 10 from BC samples and 10 from control bladder tissue (NCB) samples.

INSTRUMENT(S): LTQ Orbitrap Velos

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Epithelial Cell, Colon, Urinary Bladder

DISEASE(S): Colon Cancer,Disease Free,Urinary Bladder Cancer

SUBMITTER: Michał Kistowski

LAB HEAD: Michał Dadlez

PROVIDER: PXD004249 | Pride | 2016-12-14

REPOSITORIES: Pride

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Publications

A Strong Neutrophil Elastase Proteolytic Fingerprint Marks the Carcinoma Tumor Proteome.

Kistowski Michał M Dębski Janusz J Karczmarski Jakub J Paziewska Agnieszka A Olędzki Jacek J Mikula Michał M Ostrowski Jerzy J Dadlez Michał M

Molecular & cellular proteomics : MCP 20161207 2

Proteolytic cascades are deeply involved in critical stages of cancer progression. During the course of peptide-wise analysis of shotgun proteomic data sets representative of colon adenocarcinoma (AC) and ulcerative colitis (UC), we detected a cancer-specific proteolytic fingerprint composed of a set of numerous protein fragments cleaved C-terminally to V, I, A, T, or C residues, significantly overrepresented in AC. A peptide set linked by a common VIATC cleavage consensus was the only prominent ...[more]

PMID: 27927741

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Project description:Intense immunosuppression followed by autologous hematopoietic stem cell transplantation (aHSCT) is a potential treatment for patients suffering from aggressive multiple sclerosis (MS). However it remains unresolved whether autologous CD34+ hematopoietic progenitor cells of MS patients show gene expression differences prior to aHSCT that indicate a preset proinflammatory state, which would then also predispose to or predetermine recurrence of the autoimmune disease. To approach this key point we compared the gene expression signature of CD34+ and CD34- cells collected from MS patients and healthy donors (HD). Whole genome gene expression of CD34+ and CD34- cells was analysed with the Human 4x44K Design Array (Agilent-Technologies). As main observation we found only minor differences in the gene expression signature of MS patients compared to HD. Only a single gene, troponin-type-1 (TNNT1), reached statistical significance after correction for multiple comparisons (logFC=3.1, p<0.01). There was a decreased expression of several protease genes, myeloperoxidase (MPO), neutrophil-elastase (ELA2), cathepsin-G (CTSG) and serine-protease 21 (PRSS21) in HPCs of MS patients, albeit not reaching statistical significance. In summary we did not detect substantial alterations in the gene expression profile of CD34+ HPCs in MS. Our data support the use of autologous hematopoietic stem cell transplantation for treatment of an autoimmune disease. Samples of CD34+ cells were obtained from 4 female MS patients and 4 age matched healthy donors (3 female) mobilized by G-CSF (2x5M-NM-<g/kg/day) and 4 MS patients (2 female) mobilized by G-CSF (5M-NM-<g/kg/day) plus Cyclophosphamide (Cy, 4g/m2). White blood cells, containing the CD34+ cell fraction, were collected by leucocytapheresis from peripheral blood, frozen and stored in liquid nitrogen. All samples were thawed and processed at one center and CD34+ HPCs purified by magnetic bead separation using the autoMACS system (Miltenyi). Purity and viability of CD34+ cells was analyzed by Fluorescence Activated Cell Sorter (FACS). Total cellular RNA were extracted with TRIzol reagent and analyzed with the Human 4x44K Design Array (Agilent-Technologies).

Dataset Information

Human bladder cancer and colon cancer quatitative MS/MS

Publications

A Strong Neutrophil Elastase Proteolytic Fingerprint Marks the Carcinoma Tumor Proteome.

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