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   Special Collections

Last Update: 25-07-2014  
Related category(ies):
Health & life sciences  |  Special Collections

 

Countries involved in the project described in the article:
France  |  Germany  |  Greece  |  Luxembourg  |  Spain  |  Switzerland
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Defining biomarkers to spot bladder cancer

The European FP7 project DeCanbio brought together a consortium of clinicians and researchers in genomics, proteomics and bioinformatics to identify and validate biomarkers that hint at a recurring bladder cancer. The Centre de Recherche de la Santé (CRP-Santé) joined forces with researchers and clinicians from France, Spain, Greece, Switzerland, and Germany to develop a simple test to spot this.

Photo of a research scientist with a petri dish

© yanlev - Fotolia

Bladder cancer is a common cancer in Western Europe, and although in general treatments are initially quite effective, there is a very high recurrence rate (some 50% of the patients may develop a new cancer in the two years following the treatment). To detect patients with a high recurrence potential, the development of a simple diagnostics test that can be performed routinely using urine samples instead of periodical cystoscopy would constitute a major benefit for the patients. It would also have a positive effect on the overall costs of the treatment.

Identifying biomarkers
In this context, the project aimed in the first phase to perform an extensive discovery study including a genomics approach of bladder cancer tissue samples and a proteomic analysis of urine samples of patients diagnosed with bladder cancer in different stages and the corresponding controls. In addition, extensive literature mining was performed to include the relevant information available for this disease. The combined results of these investigations resulted in an extended list of nearly two hundred candidate proteins that represented the basis of the verification studies performed in Luxembourg.

The Luxembourg Proteomics Clinical Center (LCP) is headed by Bruno Domon. Together with a group of scientists, Professor Domon was intensively involved in the second phase of the project to validate the discovery results for potential routine clinical tests, i.e. to detect proteins differentially expressed in tissue samples. The hypothesis is that such proteins will be shed from the bladder tumour into the urine, and thus detectable in urine samples. Major efforts were devoted to design mass spectrometry based assays to measure peptides representative of the proteins of interest and hence could be used as biomarkers.

Collaboration with the private sector
In brief, the Luxembourg Proteomics Center has developed a platform based on mass spectrometry, an analytical technique that allows precise quantifying of molecules in complex biological samples. The laboratory has built expertise in this field, leveraging recent technology developments, which are based on high-resolution instruments. Through a collaboration with the company ThermoFisher, one of the world leaders in bio-analytics, the centre had early access to these technologies, which has allowed the implementation of clinical applications such as measuring protein biomarkers in urine samples. LCP has a well-established collaboration with ThermoFisher Scientific in Bremen (Germany) and San Jose (USA) with the aim of applying new mass spectrometry techniques to clinical applications.

The European project on bladder cancer has resulted in determining over forty differentially expressed proteins, which have been examined in a study to define a small panel of markers (ideally 5 or 6) that could be used routinely in clinical practice.

This last step is still on-going as is the final assay, and its approval as a diagnostic test needs extensive validation in a large population to assess its specificity and selectivity. Such a study has to be part of a follow-up project to valorise the findings of a pure research programme. However, the practical implementation of clinical tests requires a large-scale study and prior regulatory approval. Such large-scale follow-up projects could typically be conducted in collaboration with industrial partners such as diagnostics companies, or publicly funded EU projects.

 

Project details

  • Project acronym: DECANBIO
  • Participants: France (Coordinator), Switzerland, Luxembourg, Germany, Spain, Greece
  • Project FP7 201333
  • Total costs: € 3 910 866
  • EU contribution: € 2 907 412
  • Duration: March 2008 - July 2012

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