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PhD student Ghent Belgium,  

Ghent University (company)

Posted on : 23 May 2017

Project Description

  • Study of biomarkers for soft tissue mineralization, using pseudoxanhoma elasticum as a model.  
  • Mineralization of soft tissues, such as skin or blood vessels, leads to destruction of the affected tissue and hence important morbidity and mortality. 
  • It is a feature in common disorders such as chronic kidney disease, atherosclerosis and diabetes mellitus. 
  • A more extreme presentation of soft tissue mineralization can be seen in genetic disorders, among which pseudoxanthoma elasticum (PXE) is considered a hallmark disease. 
  •  PXE is an autosomal recessive connective tissue disorder mainly characterized by calcification and fragmentation of the elastic fibers in the extracellular matrix of the skin, eyes and cardiovascular system. 
  • This results in progressive skin lesions, retinal bleeding leading to blindness and accelerated atherosclerosis with a high cardiovascular risk.
  •  It is part of a larger spectrum of ectopic mineralization disorders including diseases such as Generalized Arterial Calcification of Infancy (GACI) and the PXE-like syndrome with coagulation factor deficiency. Recent progress in the understanding of the mechanisms leading to calcification in these diseases lead to the identification of two compounds, 4-phenyl butyrate and bisphosphonates, for their treatment. 
  • Experiments in animal models showed successful results with both compounds on the mineralization process. 
  • An important caveat is however the lack of reliable non-invasive biomarkers to monitor such treatments when performing a human clinical trial. 
  • The current project aims to identify and validate biomarkers for soft tissue calcification in general and PXE and its related disorders specifically. 
  • Several approaches have been described and the added value of combining different biomarkers was demonstrated for other diseases. 
  • Therefore, we search for biomarkers using three approaches: RNA profiling - looking for coding and non-coding RNA signatures; DNA methylation analysis - looking for epigenetic biomarkers; and high-definition mass spectrometry - looking at disease-specific differences in profiles of proteins. 
  • This is done on patients, cell cultures and animal models (zebrafish models) of PXE and its related diseases GACI and PXE-like disease with coagulation deficiency.

Profile of the candidate
  • You hold or plan to hold a Master of Science Degree in Medicine, Pharmaceutical Sciences, Bio-engineer, Biochemistry and biotechnology, Biomedical sciences or similar.  You have a strong interest in research and are highly motivated to complete a PhD. Commitment and perseverance are necessary. 
  • You are willing to work in an interactive research team. 
  • You have good didactic and communicative skills. Good academical skills and grades and profound knowledge of English and Dutch are mandatory. 
  • Candidates must be in possession of a certificate working with laboratory animals  or be prepared to obtain this certificate.


9000 Ghent Belgium

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